/* ----- 模型切换器新样式 ----- */
        .custom-model-dropdown { position: relative; z-index: 99999; }
        .model-trigger { 
            display: flex; align-items: center; gap: 8px; padding: 6px 10px; 
            border-radius: 10px; cursor: pointer; transition: background 0.2s; 
            font-size: 15px; font-weight: 500; color: var(--text-primary);
        }
        .model-trigger:hover { background: var(--hover-bg); }
        .model-trigger .edit-icon { width: 18px; height: 18px; color: var(--text-primary); }
        .model-trigger .chevron-icon { width: 16px; height: 16px; color: var(--text-tertiary); transition: transform 0.3s; }
        .custom-model-dropdown.active .chevron-icon { transform: rotate(180deg); }
        

        .model-menu { 
            position: fixed; left: 0px; top: 0px; width: 320px; max-width: 90vw;
            background: var(--bg-main); border-radius: 16px; border: 1px solid var(--border-color);
            box-shadow: 0 10px 40px rgba(0,0,0,0.1); padding: 16px; z-index: 99999;
            display: none; flex-direction: column;
        }
        .model-menu.active { display: flex; }

        .menu-header { font-size: 12px; color: var(--text-tertiary); margin-bottom: 12px; padding-left: 4px; }
        
        .model-list { max-height: 280px; overflow-y: auto; margin-bottom: 8px; transition: max-height 0.3s ease; position: relative; }
        .model-list.expanded { max-height: 600px; overflow-y: auto; }
        .model-list::-webkit-scrollbar { width: 4px; }
        .model-list::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

        .model-expand-btn {
            padding: 4px 12px;
            text-align: left;
            font-size: 13px;
            color: var(--text-tertiary);
            cursor: pointer;
            border-top: none;
            display: flex;
            align-items: center;
            justify-content: flex-start;
            gap: 6px;
            transition: 0.2s;
        }
        .model-expand-btn:hover { color: var(--primary-color); }
        .model-expand-btn svg { width: 28px; height: 28px; transition: transform 0.3s; stroke-width: 2px; }
        .model-list.expanded + .model-expand-btn svg { transform: rotate(180deg); }

        .model-menu-actions {
            display: flex; gap: 6px; padding: 8px 4px 0;
            border-top: 1px solid var(--border-color);
            margin-top: 8px;
        }
        .model-menu-actions .action-btn-mm {
            flex: 1; padding: 8px 12px; border-radius: 8px; font-size: 12px; font-weight: 600;
            border: 1px solid var(--border-color); background: transparent; color: var(--text-secondary);
            cursor: pointer; transition: all 0.15s; text-align: center;
        }
        .model-menu-actions .action-btn-mm:hover { background: var(--hover-bg); color: var(--text-primary); }
        .model-menu-actions .action-btn-mm.active { background: #5c5ce6; color: #fff; border-color: #5c5ce6; }
        .engine-version-badge {
            display: none !important;
        }

        .model-item { 
            display: flex; align-items: center; justify-content: space-between; 
            padding: 6px 12px; border-radius: 10px; cursor: pointer; transition: background 0.2s;
            margin-bottom: 2px;
        }
        .model-item:hover { background: var(--hover-bg); }
        .model-item.active { background: rgba(59, 130, 246, 0.05); }
        .model-item-info { flex: 1; min-width: 0; }
        .model-item-title { 
            font-size: 13px; 
            font-weight: 600; 
            color: var(--text-primary); 
            margin-bottom: 0px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .model-item-desc { font-size: 11px; color: var(--text-tertiary); line-height: 1.4; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
        .model-item-check { display: none; }

        /* 多模型对比选择 */
        .agent-multi-check,
        .model-multi-check {
            width: 24px; height: 24px; border-radius: 50%;
            border: 2px solid var(--border-color); background: transparent;
            cursor: pointer; transition: all 0.2s; flex-shrink: 0;
            display: flex; align-items: center; justify-content: center;
            margin-right: 10px;
        }
        .agent-multi-check:hover,
        .model-multi-check:hover { border-color: #3b82f6; }
        .agent-multi-check.checked,
        .model-multi-check.checked {
            border-color: #3b82f6;
            background: #3b82f6;
        }
        .agent-multi-check.checked::after,
        .model-multi-check.checked::after {
            content: '';
            width: 10px; height: 10px;
            background: #fff;
            -webkit-mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='20 6 9 17 4 12' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
            mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='20 6 9 17 4 12' fill='none' stroke='%23fff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
            border-radius: 0;
        }
        .model-multi-check.disabled { opacity: 0.4; cursor: not-allowed; }

        /* 已选模型标签区 — 移到 top-nav 右侧横向排列 */
        .compare-models-bar {
            display: none; align-items: center; gap: 6px;
            flex-wrap: nowrap; width: 100%;
            overflow-x: auto; overflow-y: hidden;
            padding-left: 20px;
        }
        .compare-models-bar.active { display: flex; }
        .compare-models-bar::-webkit-scrollbar { display: none; }
        .compare-model-tag {
            display: flex; align-items: center; gap: 3px;
            padding: 3px 8px 3px 8px; border-radius: 10px;
            background: var(--hover-bg); border: 1px solid var(--border-color);
            font-size: 11px; color: var(--text-secondary); font-weight: 500;
            white-space: nowrap; cursor: pointer; transition: all 0.2s; flex-shrink: 0;
        }
        .compare-model-tag:hover { border-color: var(--primary-color, #5c5ce6); background: rgba(92,92,230,0.05); }
        .compare-model-tag .tag-close {
            width: 14px; height: 14px; border-radius: 50%;
            display: none; align-items: center; justify-content: center;
            cursor: pointer; color: var(--text-tertiary); font-size: 10px;
            transition: all 0.15s; margin-left: 2px;
        }
        .compare-model-tag:hover .tag-close { display: flex; }
        .compare-model-tag .tag-close:hover { background: rgba(239,68,68,0.08); color: #dc2626; }
        .compare-model-tag .tag-dot {
            width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0;
        }
        .compare-mode-badge {
            display: none; align-items: center; gap: 4px;
            padding: 3px 8px; border-radius: 10px; font-size: 10px; font-weight: 600;
            background: rgba(92,92,230,0.1); color: #5c5ce6; border: 1px solid rgba(92,92,230,0.2);
            white-space: nowrap; cursor: pointer; flex-shrink: 0;
        }
        .compare-mode-badge.active { display: flex; }
        .compare-mode-badge:hover { background: rgba(92,92,230,0.2); }
        .compare-mode-clear {
            display: flex; align-items: center; justify-content: center;
            width: 18px; height: 18px; border-radius: 50%;
            background: rgba(239,68,68,0.08); color: #dc2626;
            cursor: pointer; transition: all 0.15s; flex-shrink: 0;
        }
        .compare-mode-clear:hover { background: rgba(239,68,68,0.25); transform: scale(1.1); }

        /* 对比模式浮动输入 */
        .compare-float-input {
            position: fixed; bottom: 32px; right: 32px; z-index: 100;
            display: none; align-items: center; gap: 0;
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .compare-float-input.active { display: flex; }
        .compare-float-input.expanded {
            width: min(560px, calc(100vw - 64px));
            background: var(--bg-main); border: 1px solid var(--border-color);
            border-radius: 28px; box-shadow: 0 8px 32px rgba(0,0,0,0.12);
            padding: 6px 6px 6px 18px;
        }
        .compare-float-input.expanded .compare-float-field {
            display: block;
        }
        .compare-float-field {
            display: none; flex: 1; border: none; outline: none;
            background: transparent; font-size: 14px; line-height: 1.5;
            color: var(--text-primary); font-family: inherit;
            min-width: 0; resize: none; max-height: 80px;
        }
        .compare-float-field::placeholder { color: var(--text-tertiary); }
        .compare-float-btn {
            width: 48px; height: 48px; border-radius: 50%; border: none;
            background: linear-gradient(135deg, #a855f7 0%, #3b82f6 100%);
            color: #fff; cursor: pointer; display: flex;
            align-items: center; justify-content: center;
            box-shadow: 0 4px 16px rgba(92,92,230,0.3);
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            flex-shrink: 0;
        }
        .compare-float-btn:hover { transform: scale(1.08); box-shadow: 0 6px 24px rgba(92,92,230,0.4); }
        .compare-float-btn:active { transform: scale(0.95); }
        .compare-float-btn.sending {
            background: var(--border-color); cursor: default;
            animation: floatPulse 1.2s ease-in-out infinite;
        }
        @keyframes floatPulse {
            0%, 100% { opacity: 0.6; } 50% { opacity: 1; }
        }
        .compare-float-btn svg { width: 22px; height: 22px; transition: transform 0.2s; }
        .compare-float-input.expanded .compare-float-btn svg { transform: rotate(0deg); }

        /* 多模型响应区域 — 多窗口模式 */
        .multi-response-container {
            display: none; flex: 1; padding: 12px; overflow: hidden;
        }
        .multi-response-container.active { display: flex; overflow-x: auto; }
        .multi-response-container::-webkit-scrollbar { height: 6px; }
        .multi-response-container::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
        .multi-response-container::-webkit-scrollbar-track { background: transparent; }
        .multi-response-grid {
            display: flex; gap: 12px; flex: 1; min-width: 0;
            background: transparent;
        }
        .multi-response-panel {
            display: flex; flex-direction: column;
            background: transparent; overflow: hidden;
            min-width: 320px; flex: 1;
        }
        .multi-response-header {
            padding: 6px 12px; font-size: 12px; font-weight: 600;
            color: var(--text-primary); background: transparent;
            display: flex; align-items: center; gap: 6px;
            flex-shrink: 0; user-select: none;
            cursor: grab;
        }
        .multi-response-header:active { cursor: grabbing; }
        .multi-response-header .dot {
            width: 6px; height: 6px; border-radius: 50%;
        }
        .multi-response-header .panel-title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: pointer; }
        .multi-response-header .panel-title:hover { color: var(--primary-color); }
        .multi-response-header .panel-actions {
            display: flex; align-items: center; gap: 2px;
        }
        .multi-response-header .panel-action-btn {
            width: 24px; height: 24px; border-radius: 6px; border: none;
            background: transparent; color: var(--text-tertiary); cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            transition: all 0.15s;
        }
        .multi-response-header .panel-action-btn:hover {
            background: var(--hover-bg); color: var(--text-primary);
        }
        .multi-response-header .panel-action-btn svg { width: 14px; height: 14px; }
        .multi-response-body {
            flex: 1; padding: 16px 20px; font-size: 13px; color: var(--text-secondary);
            line-height: 1.7; overflow-y: auto;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            background: var(--bg-primary);
        }
        .multi-response-body::-webkit-scrollbar { width: 4px; }
        .multi-response-body::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }
        .compare-user-msg {
            margin: 12px 0 4px auto; padding: 8px 14px;
            background: rgba(92,92,230,0.1); border-radius: 14px 14px 4px 14px;
            font-size: 13px; color: var(--text-primary); max-width: 85%;
            text-align: right; white-space: pre-wrap; word-break: break-word;
        }
        .compare-assistant-msg {
            margin: 4px 0 8px 0; padding: 8px 14px;
            background: var(--hover-bg); border-radius: 14px 14px 14px 4px;
            font-size: 13px; color: var(--text-secondary); max-width: 90%;
            line-height: 1.6;
        }
        .compare-assistant-msg + .compare-assistant-msg {
            margin-top: 2px;
        }

        .multi-response-header { position: relative; }

        /* 对比设置菜单 */
        .compare-settings-btn {
            width: 24px; height: 24px; border-radius: 6px;
            border: none; background: rgba(92,92,230,0.08);
            color: var(--text-tertiary); cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            transition: all 0.15s; flex-shrink: 0;
        }
        .compare-settings-btn:hover {
            background: rgba(92,92,230,0.18); color: var(--text-primary);
        }
        .compare-settings-btn svg { width: 14px; height: 14px; }
        .compare-settings-menu {
            position: absolute; top: 100%; right: 0;
            background: var(--bg-secondary, #fff);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 6px 0;
            min-width: 200px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.12);
            z-index: 100;
            display: none;
        }
        .compare-settings-menu.open { display: block; }
        .compare-settings-item {
            display: flex; align-items: center; justify-content: space-between;
            padding: 8px 14px;
            font-size: 12px; color: var(--text-secondary);
            cursor: pointer; transition: background 0.15s;
            user-select: none;
        }
        .compare-settings-item:hover {
            background: var(--hover-bg);
        }
        .compare-settings-item .item-label { flex: 1; }
        .compare-settings-item .item-toggle {
            width: 32px; height: 18px; border-radius: 9px;
            background: var(--border-color); position: relative;
            transition: background 0.2s; flex-shrink: 0;
        }
        .compare-settings-item .item-toggle.on {
            background: #5c5ce6;
        }
        .compare-settings-item .item-toggle::after {
            content: ''; position: absolute;
            top: 2px; left: 2px;
            width: 14px; height: 14px; border-radius: 50%;
            background: #fff; transition: transform 0.2s;
        }
        .compare-settings-item .item-toggle.on::after {
            transform: translateX(14px);
        }
        .compare-settings-divider {
            height: 1px; background: var(--border-color);
            margin: 4px 0;
        }

        /* 独立滚动模式 */
        .multi-response-container.scrollable-mode .multi-response-grid {
            flex-direction: column;
            overflow-y: auto;
        }
        .multi-response-container.scrollable-mode .multi-response-panel {
            min-height: 300px;
            max-height: none;
        }
        .multi-response-container.scrollable-mode .multi-response-body {
            max-height: 60vh;
        }

        /* 拖拽状态 */
        .multi-response-panel.dragging {
            opacity: 0.5;
            border: 2px dashed var(--primary-color, #5c5ce6);
            border-radius: 12px;
        }
        .multi-response-panel.drag-over {
            border-left: 3px solid var(--primary-color, #5c5ce6);
        }

        /* ===== 会议辩论模式 ===== */
        .meeting-toggle {
            display: flex; align-items: center; gap: 4px;
            padding: 3px 10px; border-radius: 14px;
            border: 1.5px solid var(--border-color);
            background: var(--bg-primary);
            color: var(--text-tertiary); font-size: 11px; font-weight: 600;
            cursor: pointer; transition: all 0.2s; white-space: nowrap; flex-shrink: 0;
            user-select: none;
        }
        .meeting-toggle:hover { border-color: var(--primary-color); color: var(--primary-color); }
        .meeting-toggle.active { background: #5c5ce6; color: #fff; border-color: #5c5ce6; }
        .meeting-toggle.disabled { opacity: 0.35; cursor: not-allowed; }

        /* ===== 会议/对比模式全屏覆盖层 ===== */
        /* ===== 全屏模式：直接position:fixed，不克隆DOM ===== */
        .multi-response-container.hf-fullscreen {
            position: fixed !important; inset: 0 !important;
            z-index: 99999 !important;
            background: var(--bg-main) !important;
            padding: 24px !important;
            display: flex !important;
            overflow: hidden !important;
        }
        .multi-response-container.hf-fullscreen .multi-response-grid {
            height: 100%; overflow: hidden;
        }
        .multi-response-container.hf-fullscreen .multi-response-panel {
            min-width: 0;
        }
        .multi-response-container.hf-fullscreen .multi-response-body {
            max-height: none; min-height: 0;
        }

        .meeting-container.hf-fullscreen {
            position: fixed !important; inset: 0 !important;
            z-index: 99999 !important;
            background: var(--bg-main) !important;
            padding: 24px !important;
            display: flex !important;
            flex: 1 !important;
            max-width: none !important;
            width: auto !important;
            margin: 0 !important;
            height: 100% !important;
        }
        .meeting-container.hf-fullscreen .meeting-messages {
            height: 0; flex: 1;
        }

        /* 全屏关闭按钮（共用） */
        .hf-fullscreen-close {
            position: fixed; top: 20px; right: 20px; z-index: 2147483646;
            width: 44px; height: 44px; border-radius: 50%;
            border: none; background: rgba(239,68,68,0.08);
            color: #ef4444; cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            transition: all 0.2s; box-shadow: 0 2px 12px rgba(0,0,0,0.1);
        }
        .hf-fullscreen-close:hover {
            background: #ef4444; color: #fff;
            transform: scale(1.05); box-shadow: 0 4px 16px rgba(239,68,68,0.4);
        }
        .hf-fullscreen-close svg {
            width: 20px; height: 20px; stroke-width: 2.5;
        }

        .meeting-container {
            display: none; flex-direction: column; flex: 1; min-height: 0;
            width: 100%;
        }
        .meeting-container.active { display: flex; }
        .meeting-container-inner {
            max-width: 900px; width: 100%; margin: 0 auto;
            padding: 0 16px; display: flex; flex-direction: column; flex: 1;
            min-height: 0;
        }
        .meeting-header {
            display: flex; align-items: center; gap: 10px;
            padding: 12px 0; border-bottom: 1px solid var(--border-color);
            flex-shrink: 0;
        }
        .meeting-header-title {
            font-size: 15px; font-weight: 700; color: var(--text-primary);
        }
        .meeting-header-models {
            display: flex; gap: 6px; flex: 1; flex-wrap: wrap;
        }
        .meeting-model-chip {
            display: flex; align-items: center; gap: 4px;
            padding: 2px 8px; border-radius: 10px;
            font-size: 11px; font-weight: 600;
            background: var(--hover-bg); color: var(--text-secondary);
        }
        .meeting-model-chip .dot { width: 6px; height: 6px; border-radius: 50%; }
        .meeting-messages {
            flex: 1; overflow-y: auto; padding: 16px 0 100px;
            display: flex; flex-direction: column; gap: 16px;
        }
        .meeting-messages::-webkit-scrollbar { display: none; }
        .meeting-messages { scrollbar-width: none; -ms-overflow-style: none; }

        .meeting-msg {
            display: flex; gap: 10px; max-width: 85%;
            animation: meetingFadeIn 0.3s ease;
            align-items: flex-start;
        }
        @keyframes meetingFadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
        .meeting-msg.host { align-self: flex-end; flex-direction: row-reverse; max-width: 60%; }
        .meeting-msg.host .msg-content { max-width: none; }
        .meeting-msg .msg-avatar {
            width: 32px; height: 32px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            font-size: 14px; flex-shrink: 0; font-weight: 700;
            color: #fff;
        }
        .meeting-msg.host .msg-avatar { background: #5c5ce6; }
        .meeting-msg .msg-body {
            flex: 1; min-width: 0;
            display: flex; flex-direction: column; gap: 4px;
        }
        .meeting-msg .msg-content {
            padding: 8px 12px; border-radius: 14px;
            font-size: 13px; line-height: 1.7;
            background: var(--bg-primary); border: 1px solid var(--border-color);
            color: var(--text-primary);
            word-break: break-word;
        }
        .meeting-msg .msg-content.markdown-body { padding: 10px 14px; }
        .meeting-msg .msg-content.markdown-body p { margin: 0 0 6px; }
        .meeting-msg .msg-content.markdown-body p:last-child { margin-bottom: 0; }
        .meeting-msg .msg-content.markdown-body pre { margin: 6px 0; border-radius: 8px; font-size: 12px; }
        .meeting-msg .msg-content.markdown-body code { font-size: 12px; }
        .meeting-msg .msg-content.markdown-body ul, .meeting-msg .msg-content.markdown-body ol { padding-left: 18px; margin: 4px 0; }
        .meeting-msg .msg-content.markdown-body blockquote { margin: 6px 0; padding: 4px 10px; border-left: 3px solid var(--border-color); }
        .meeting-msg .msg-content.markdown-body table { font-size: 12px; margin: 6px 0; }
        .meeting-msg.host .msg-content {
            background: #5c5ce6; color: #fff; border-color: #5c5ce6;
        }
        .meeting-msg .msg-name {
            font-size: 11px; font-weight: 600;
            color: var(--text-tertiary);
        }
        .meeting-msg.host .msg-name { color: rgba(255,255,255,0.7); text-align: right; }


        .meeting-input-area {
            flex-shrink: 0; padding: 12px 0;
            display: flex; align-items: center;
            position: relative;
        }
        .meeting-input {
            flex: 1; resize: none; border: 1px solid transparent;
            border-radius: 999px; padding: 10px 48px 10px 16px;
            font-size: 13px; line-height: 1.5;
            background: var(--hover-bg); color: var(--text-primary);
            outline: none; min-height: 40px; max-height: 120px;
            font-family: inherit; transition: all 0.2s;
        }
        .meeting-input:focus { background: var(--border-color); border-color: var(--border-color); }
        .meeting-send-btn {
            position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
            width: 32px; height: 32px; border-radius: 50%;
            border: none; background: var(--text-primary); color: var(--bg-primary);
            cursor: pointer; display: flex; align-items: center; justify-content: center;
            transition: all 0.15s;
        }
        .meeting-send-btn:hover { opacity: 0.8; transform: translateY(-50%) scale(1.05); }
        .meeting-send-btn:disabled { opacity: 0.3; cursor: not-allowed; transform: translateY(-50%); }
        .meeting-send-btn svg { width: 16px; height: 16px; }

        .meeting-thinking {
            color: var(--text-tertiary); font-size: 13px;
            display: inline-flex; align-items: center; gap: 2px;
        }
        .meeting-dots {
            display: inline-block;
            animation: meetingDots 1.4s steps(4, end) infinite;
            width: 1.5em;
            text-align: left;
        }
        @keyframes meetingDots {
            0% { content: ''; opacity: 0.3; }
            25% { opacity: 0.5; }
            50% { opacity: 0.7; }
            75% { opacity: 1; }
        }
        .meeting-cursor {
            display: inline-block;
            width: 2px; height: 14px;
            background: var(--primary-color, #5c5ce6);
            margin-left: 2px;
            vertical-align: text-bottom;
            animation: meetingCursorBlink 0.8s infinite;
        }
        @keyframes meetingCursorBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0; }
        }
        /* Xss-Lens 意图模型（auto-router）- 灰色无边框统一风格 */
        .model-item[data-model-id="auto-router"] {
            background: #f8f9fa;
            border: none;
            margin-bottom: 8px;
            border-radius: 8px;
            position: relative;
        }
        .model-item[data-model-id="auto-router"]::before {
            display: none;
        }
        .model-item[data-model-id="auto-router"]:hover {
            background: #f1f3f5;
            transform: none;
            box-shadow: none;
        }
        .model-item[data-model-id="auto-router"].active {
            background: #e9ecef;
            box-shadow: none;
        }
        .model-item[data-model-id="auto-router"] .model-item-title {
            color: #4b5563;
            font-weight: 500;
            font-size: 13px;
        }
        .model-item[data-model-id="auto-router"] .model-item-title::before {
            content: '';
        }
        .model-item[data-model-id="auto-router"] .model-item-desc {
            color: #6b7280;
            font-size: 11px;
            font-weight: 400;
            margin-top: 2px;
        }

        .menu-footer { display: flex; gap: 8px; margin-top: 12px; padding-top: 16px; border-top: none; }

        /* 兼容移动端 */
        /* ----- CSS 变量：亮色/暗色模式 ----- */
        :root {
            --bg-main: #ffffff;      
            --bg-primary: #ffffff;
            --bg-sidebar: #f5f5f7;   
            --hover-bg: #e5e5eb;
            --text-primary: #1d1d1f;
            --text-secondary: #515154;
            --text-tertiary: #86868b;
            --border-color: #e5e5ea;
            --border-focus: #c2c2c9; 
            --input-bg: #ffffff; 
            --input-shadow: 0 4px 20px rgba(0,0,0,0.04);
            --user-bubble: #f0f0f4;
            --btn-black: #000000;
            --btn-black-text: #ffffff;
            --code-bg: #f5f5f7;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --success-color: #10a37f;
            --error-color: #ef4444;
            --warning-color: #f59e0b;
            --primary-color: #3b82f6;
            --like-color: #10a37f;
            --dislike-color: #ef4444;
            --share-color: #8b5cf6;
            --border-focus-dark: #d1d1d6;
        }
        :root[data-theme="dark"] {
            --bg-main: #1e1e1e;
            --bg-primary: #1e1e1e;
            --bg-sidebar: #121212;
            --hover-bg: #2f2f2f;
            --text-primary: #ececf1;
            --text-secondary: #b4b4b4;
            --text-tertiary: #666666;
            --border-color: rgba(255, 255, 255, 0.1);
            --border-focus: rgba(255, 255, 255, 0.3); 
            --input-bg: #2f2f2f;
            --input-shadow: 0 4px 20px rgba(0,0,0,0.2);
            --user-bubble: #2f2f2f;
            --btn-black: #ffffff;
            --btn-black-text: #000000;
            --code-bg: #0d0d0d;
            --border-focus-dark: #1a1a1a;
        }
        /* 登录按钮修正样式 - 完美垂直水平居中对齐，无投影，悬停背景变浅 */
        .login-btn-primary {
            background-color: var(--btn-black);
            color: var(--btn-black-text);
            border: none;
            height: 32px;
            padding: 0 16px;
            border-radius: 16px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            line-height: 1;
            margin-right: 8px;
            /* 移除所有投影效果 */
            box-shadow: none;
            transition: background-color 0.2s ease;
        }

        .login-btn-primary:hover {
            /* 悬停效果：背景变浅，无位移，无投影 */
            background-color: var(--hover-bg);
            color: var(--btn-black-text);
            transform: none;
            box-shadow: none;
        }

        /* 关于我们 - 全页样式 */
        .about-page-overlay {
            display: none; position: fixed; inset: 0; z-index: 30000;
            background: var(--bg-main); overflow: hidden;
        }
        .about-page-overlay.active { display: flex; flex-direction: column; }
        .about-page {
            width: 100%; height: 100%; display: flex; flex-direction: column;
            animation: aboutSlideIn 0.3s ease;
        }
        @keyframes aboutSlideIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .about-header {
            display: flex; align-items: center; justify-content: space-between;
            padding: 12px 24px; border-bottom: 1px solid var(--border-color);
            background: var(--bg-main); flex-shrink: 0;
        }
        .about-header-left { display: flex; align-items: center; gap: 10px; }
        .about-logo {
            width: 32px; height: 32px; border-radius: 8px;
            background: linear-gradient(135deg, var(--success-color, #10b981), #059669);
            display: flex; align-items: center; justify-content: center;
        }
        .about-header-title { font-size: 16px; font-weight: 700; color: var(--text-primary); }
        .about-header-badge {
            padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 600;
            background: var(--hover-bg); color: var(--text-secondary);
        }
        .about-page-close {
            display: flex; align-items: center; gap: 6px;
            padding: 6px 14px; border-radius: 8px; border: 1px solid var(--border-color);
            background: transparent; color: var(--text-secondary); cursor: pointer;
            font-size: 13px; transition: all 0.2s;
        }
        .about-page-close:hover { background: var(--hover-bg); color: var(--text-primary); }
        .about-main {
            flex: 1; overflow-y: auto; padding: 0 24px 40px;
            max-width: 860px; margin: 0 auto; width: 100%;
        }
        .about-hero {
            text-align: center; padding: 48px 0 36px;
        }
        .about-hero-title {
            font-size: 36px; font-weight: 800; color: var(--text-primary);
            margin: 0 0 8px;
        }
        .about-hero-subtitle {
            font-size: 16px; color: var(--text-tertiary); margin: 0 0 16px;
        }
        .about-hero-desc {
            font-size: 14px; color: var(--text-secondary); line-height: 1.8;
            max-width: 600px; margin: 0 auto;
        }
        .about-stats {
            display: flex; justify-content: center; gap: 32px;
            margin-top: 28px; padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .about-stat { text-align: center; }
        .about-stat-value {
            font-size: 28px; font-weight: 800; color: var(--text-primary);
        }
        .about-stat-label {
            font-size: 12px; color: var(--text-tertiary); margin-top: 2px;
        }
        .about-intro-section { margin-bottom: 32px; }
        .about-intro-grid {
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
        }
        .about-intro-card {
            padding: 20px; border-radius: 12px;
            border: 1px solid var(--border-color); background: var(--bg-primary);
        }
        .about-intro-icon { font-size: 24px; margin-bottom: 10px; }
        .about-intro-card h3 {
            font-size: 15px; font-weight: 700; color: var(--text-primary); margin: 0 0 8px;
        }
        .about-intro-card p {
            font-size: 13px; color: var(--text-secondary); line-height: 1.7; margin: 0;
        }
        .about-feature-section {
            margin-bottom: 32px;
        }
        .about-feature-section-header {
            display: flex; align-items: flex-start; gap: 14px;
            margin-bottom: 16px;
        }
        .about-feature-section-icon { font-size: 28px; line-height: 1; flex-shrink: 0; }
        .about-feature-section-title {
            font-size: 18px; font-weight: 700; color: var(--text-primary); margin: 0 0 4px;
        }
        .about-feature-section-desc {
            font-size: 13px; color: var(--text-tertiary); margin: 0;
        }
        .about-card-grid {
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
        }
        .about-card {
            padding: 20px; border-radius: 12px; border: 1px solid var(--border-color);
            background: var(--bg-primary); transition: all 0.2s;
        }
        .about-card:hover { border-color: var(--success-color); box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
        .about-card-icon {
            width: 40px; height: 40px; border-radius: 10px;
            display: flex; align-items: center; justify-content: center;
            font-size: 20px; margin-bottom: 12px;
        }
        .about-card h3 {
            font-size: 14px; font-weight: 600; color: var(--text-primary); margin: 0 0 6px;
        }
        .about-card p {
            font-size: 12px; color: var(--text-tertiary); line-height: 1.6; margin: 0;
        }
        .about-tech-section {
            padding: 24px 0; border-top: 1px solid var(--border-color); margin-top: 8px;
        }
        .about-tech-section h2 {
            font-size: 16px; font-weight: 700; color: var(--text-primary); margin: 0 0 12px;
        }
        .about-tech-tags { display: flex; flex-wrap: wrap; gap: 8px; }
        .about-tech-tag {
            padding: 6px 14px; border-radius: 20px; font-size: 12px; font-weight: 500;
            background: var(--hover-bg); color: var(--text-secondary);
        }
        .about-footer {
            text-align: center; padding: 20px 0 0; font-size: 12px;
            color: var(--text-tertiary); border-top: 1px solid var(--border-color); margin-top: 16px;
        }
        .login-btn-primary:active {
            transform: none;
            background-color: var(--border-color);
        }

        /* 兼容移动端的微调 + #4 顶部优化 */
        /* 暗色模式原生控件适配 */
        :root {
            color-scheme: light dark;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; font-family: var(--font-family); }
        * { -webkit-tap-highlight-color: transparent; outline: none; }
        /* 全局光标：按钮/链接显示手型，文字显示文字光标 */
        button, [role="button"], a, .btn, .nav-item, .model-item, .history-item,
                button, [role="button"], a, .btn, .nav-item, .model-item, .history-item,
        .model-trigger, .action-btn, .icon-btn, .tab-btn, .close-btn,
        .sidebar-item, .app-card, .app-tab, .settings-item, .user-profile-card,
        .page-action-btn, .add-row-btn, .custom-provider-submit, .close-modal-btn,
        .writer-btn, .writer-back-btn, .voice-footer-btn-cancel, .btn-cancel,
        .btn-primary, .model-expand-btn, .cp-action-btn, .panel-action-btn,
        .agent-selector-item, .agent-selector-trigger, .fs-header-btn,
        .meeting-toggle, .compare-mode-badge, .compare-mode-clear,
        .compare-settings-btn, .multi-response-header .panel-title,
        .model-multi-check, .agent-multi-check, .tag-close { cursor: pointer; }
        button span, button label, [role="button"] span, a span { cursor: pointer !important; }
        /* 全局安全区域与移动端优化 */
        html {
            /* iOS 安全区域环境变量 */
            --sat: env(safe-area-inset-top, 0px);
            --sar: env(safe-area-inset-right, 0px);
            --sab: env(safe-area-inset-bottom, 0px);
            --sal: env(safe-area-inset-left, 0px);
            -webkit-text-size-adjust: 100%;
            -webkit-tap-highlight-color: transparent;
        }
        body { background-color: var(--bg-main); color: var(--text-primary); display: flex; height: 100vh; height: 100dvh; overflow: hidden; font-size: 15px; transition: background-color 0.3s ease; -webkit-overflow-scrolling: touch; }
        html { scroll-behavior: smooth; }

        .mobile-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 90; opacity: 0; transition: 0.3s; }
        /* ----- 左侧边栏新样式 ----- */
        .sidebar { 
            width: 260px; background-color: var(--bg-sidebar); display: flex; flex-direction: column; 
            transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1); z-index: 100; 
            flex-shrink: 0; padding: 16px 12px; padding-top: calc(16px + env(safe-area-inset-top, 0px)); padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px)); padding-left: calc(12px + env(safe-area-inset-left, 0px)); border-right: 1px solid var(--border-color);
            height: 100vh; height: 100dvh;
        }
        .sidebar.collapsed { 
            display: none !important;
        }

        /* ★ 全局规则：Coder模式/写作模式下侧边栏默认折叠（非移动端），对话窗口左边紧贴设备边缘 */
        .sidebar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; padding: 0 4px; }
        .sidebar-logo { display: flex; align-items: center; }
        .sidebar-logo img { height: 28px; width: auto; }
        
        .collapse-btn { 
            background: transparent; border: none; color: var(--text-secondary); 
            cursor: pointer; display: flex; align-items: center; justify-content: center; 
            width: 32px; height: 32px; border-radius: 8px; transition: 0.2s; 
        }
        .collapse-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .collapse-btn svg { width: 18px; height: 18px; }
        .sidebar:hover #close-sidebar-btn { opacity: 1 !important; }
        .sidebar { position: relative; }

        .sidebar-nav { display: flex; flex-direction: column; gap: 1px; margin-bottom: 24px; }
        .nav-item { 
            display: flex; align-items: center; gap: 12px; width: 100%; padding: 10px 12px; 
            background: transparent; border: none; color: var(--text-primary); 
            font-size: 14px; font-weight: 500; border-radius: 10px; cursor: pointer; 
            text-align: left; transition: 0.2s; 
        }
        .nav-item:hover { background: var(--hover-bg); }
        .nav-item.active { background: var(--hover-bg); }
        .nav-item svg { width: 18px; height: 18px; color: var(--text-secondary); }
        .nav-item:hover svg { color: var(--text-primary); }
        
        /* 无限画布按钮图标扁平化 */
        #canvas-mode-btn svg {
            stroke-width: 1.5px !important;
            stroke-linecap: round !important;
            stroke-linejoin: round !important;
        }
        #canvas-mode-btn:hover svg {
            stroke: var(--primary-color) !important;
        }
        
        /* 无限画布 AI 工具栏 - 与 Tldraw 原生 UI 风格统一 */
        .ai-tool-btn {
            width: 40px !important;
            height: 40px !important;
            border-radius: 0 !important;
            border: none !important;
            background: transparent !important;
            transition: background 0.15s ease !important;
            cursor: pointer !important;
            display: flex !important;
            align-items: center !important;
            justify-content: center !important;
            color: #5c5c5c !important;
        }
        .ai-tool-btn:hover {
            background: #f1f5f9 !important;
            color: #1d1d1f !important;
            transform: none !important;
            box-shadow: none !important;
        }
        .ai-tool-btn:active {
            background: #e2e8f0 !important;
        }
        .ai-tool-btn svg {
            stroke-width: 1.75px !important;
            width: 20px !important;
            height: 20px !important;
        }
        /* 测试按钮隐藏 */
        .ai-tool-btn.test-btn {
            display: none !important;
        }
        /* 暗色模式下的工具栏 */
        :root[data-theme="dark"] .ai-tool-btn {
            color: #a0a0a0 !important;
        }
        :root[data-theme="dark"] .ai-tool-btn:hover {
            background: rgba(255, 255, 255, 0.06) !important;
            color: #e0e0e0 !important;
        }

        .sidebar-section { margin-bottom: 20px; }
        #chats-section { flex: 1; display: flex; flex-direction: column; min-height: 0; margin-bottom: 0; }
        .section-header { 
            display: flex; align-items: center; justify-content: space-between; 
            padding: 8px 12px; font-size: 12px; font-weight: 600; color: var(--text-tertiary); 
            cursor: pointer; border-radius: 8px; transition: 0.2s; 
        }
        .section-header:hover { color: var(--text-secondary); }
        .section-header .chevron { width: 14px; height: 14px; transition: transform 0.2s; }
        .sidebar-section.collapsed .chevron { transform: rotate(-90deg); }
        .section-content { display: flex; flex-direction: column; gap: 1px; margin-top: 4px; }
        #chats-section .section-content { flex: 1; overflow-y: auto; min-height: 0; }
        .sidebar-section.collapsed .section-content { display: none; }

        .history-group-title { 
            padding: 12px 12px 6px; font-size: 12px; font-weight: 600; 
            color: var(--text-tertiary); 
        }
        .history-item-wrapper { position: relative; margin: 0 4px; }
        .history-item-wrapper .nav-item { padding: 8px 12px; font-size: 13.5px; border-radius: 8px; }
        .history-item-wrapper .more-btn { 
            position: absolute; right: 8px; top: 50%; transform: translateY(-50%); 
            display: none; background: transparent; border: none; color: var(--text-tertiary); 
            width: 24px; height: 24px; border-radius: 6px; cursor: pointer; 
            align-items: center; justify-content: center; 
        }
        .history-item-wrapper:hover .more-btn { display: flex; }
        .more-btn:hover { background: var(--border-color); color: var(--text-primary); }

        .sidebar-footer { margin-top: auto; padding-top: 12px; position: relative; }

        /* 侧边栏栏目移至主内容区顶部 */
        .sidebar-items-bar { display: flex; align-items: center; gap: 2px; padding: 0 12px 4px; width: 100%; max-width: 800px; margin: 0 auto; box-sizing: border-box; }
        .sidebar-item-btn { display: flex; align-items: center; gap: 6px; padding: 5px 12px; border: none; background: transparent; color: var(--text-tertiary); border-radius: 6px; cursor: pointer; font-size: 12.5px; font-weight: 500; transition: all 0.2s; white-space: nowrap; }
        .sidebar-item-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .sidebar-item-btn svg { width: 16px; height: 16px; }
        .sidebar-item-btn.active { background: rgba(59, 130, 246, 0.1); color: var(--accent-color, #3b82f6); }
        .sidebar-item-btn.active svg { color: var(--accent-color, #3b82f6); }
        @media (max-width: 768px) {
            .sidebar-items-bar { padding: 4px 8px; gap: 1px; overflow-x: auto; }
            .sidebar-item-btn { padding: 6px 12px; font-size: 12px; }
        }
        .user-profile-card { 
            margin: 8px; padding: 12px; border-radius: 12px; cursor: pointer; transition: 0.2s; 
            position: relative; border: 1px solid transparent;
        }
        .user-profile-card:hover { background: var(--hover-bg); border-color: var(--border-color); }
        .user-info-row { display: flex; align-items: center; gap: 12px; width: 100%; }
        .user-avatar { width: 30px; height: 30px; border-radius: 50%; background: linear-gradient(135deg, #6366f1, #8b5cf6); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: 13px; flex-shrink: 0; }
        .user-details { flex: 1; display: flex; flex-direction: column; min-width: 0; }
        .user-name-text { font-size: 14px; font-weight: 600; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .user-plan-text { font-size: 11px; color: var(--text-secondary); }
        .chevron-icon { color: var(--text-secondary); transition: transform 0.3s; }
        .user-profile-card.active .chevron-icon { transform: rotate(180deg); }

        .user-settings-dropdown {
            position: absolute; bottom: calc(100% + 8px); left: 0; right: 0;
            width: 100%;
            background: var(--bg-primary); border: 1px solid var(--border-color);
            border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            display: none; flex-direction: column; padding: 6px; z-index: 100;
            animation: slideUp 0.2s ease-out;
            max-height: 60vh; overflow-y: auto;
        }
        .user-profile-card.active .user-settings-dropdown { display: flex; }
        @keyframes slideUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

        .settings-item {
            display: flex; align-items: center; gap: 10px; padding: 10px 12px;
            border-radius: 8px; font-size: 13px; color: var(--text-primary);
            transition: 0.2s; cursor: pointer;
            min-height: 40px; /* 移动端友好，最小点击区域 */
        }
        .settings-item:hover { background: var(--hover-bg); }
        .settings-item:active { background: var(--hover-bg); } /* 移动端点击反馈 */
        .settings-item svg { width: 16px; height: 16px; color: var(--text-secondary); flex-shrink: 0; }
        .settings-item.danger { color: var(--error-color); }
        .settings-item.danger:hover { background: rgba(239, 68, 68, 0.05); }
        .settings-item.danger svg { color: var(--error-color); }
        .settings-divider { height: 1px; background: var(--border-color); margin: 6px 0; }
        
        .claim-discount-btn {
            display: flex; align-items: center; justify-content: center; gap: 8px;
            width: 100%; padding: 8px 0; border-radius: 20px;
            background: transparent; border: 1px solid var(--border-color);
            color: var(--text-primary); font-size: 13px; font-weight: 500;
            cursor: pointer; transition: 0.2s;
        }
        .claim-discount-btn:hover { background: var(--hover-bg); }
        .claim-discount-btn svg { width: 16px; height: 16px; }

        /* 用户菜单弹窗 */
        .user-menu-popup { 
            position: fixed; bottom: 80px; left: 12px; width: 240px; 
            background: var(--bg-main); border-radius: 16px; border: 1px solid var(--border-color); 
            box-shadow: 0 12px 40px rgba(0,0,0,0.15); padding: 0; z-index: 10000; 
            display: none; flex-direction: column; animation: menuFadeIn 0.2s ease;
            overflow: hidden;
        }
        .user-menu-popup.active { display: flex; }
        .user-menu-info { 
            padding: 16px; display: flex; align-items: center; gap: 12px;
            background: linear-gradient(135deg, var(--primary-color, #5c5ce6)15, transparent);
        }
        .user-menu-avatar { 
            width: 40px; height: 40px; border-radius: 50%; 
            background: var(--primary-color, #5c5ce6); color: #fff;
            display: flex; align-items: center; justify-content: center;
            font-weight: 700; font-size: 16px; flex-shrink: 0;
        }
        .user-menu-details { flex: 1; min-width: 0; }
        .user-menu-name { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 2px; }
        .user-menu-email { font-size: 12px; color: var(--text-tertiary); word-break: break-all; }
        .user-menu-section { padding: 4px 8px; }
        .user-menu-section + .user-menu-section { border-top: 1px solid var(--border-color); margin-top: 4px; padding-top: 8px; }
        .user-menu-item { 
            display: flex; align-items: center; gap: 10px; padding: 10px 12px; 
            border-radius: 10px; cursor: pointer; transition: 0.2s; color: var(--text-primary); 
            font-size: 14px; text-decoration: none;
        }
        .user-menu-item:hover { background: var(--hover-bg); }
        .user-menu-item svg { width: 18px; height: 18px; color: var(--text-secondary); }
        .user-menu-item.danger { color: #e74c3c; }
        .user-menu-item.danger svg { color: #e74c3c; }


        .api-key-link { font-size: 16px; color: var(--text-secondary); text-decoration: none; display: flex; align-items: center; margin-right: 5px; font-weight: 600; transition: color 0.2s; }
        .api-key-link:hover { color: var(--primary-color); }
        
        /* PC 端输入框底角模型名称：保持原来的灰度样式位置不动 */
        .model-name-display { font-size: 13px; color: var(--text-tertiary); margin-right: 12px; font-weight: 400; white-space: nowrap; user-select: none; }
        
        /* 思考模式样式 - 灰色无边框统一风格 */
        /* 思考模式样式 - DeepSeek 风格 */
        .thinking-wrapper { 
            margin-bottom: 8px; 
            overflow: hidden; 
        }
        .thinking-wrapper.collapsed .thinking-content { 
            display: none; 
        }
        .thinking-header { 
            display: flex; 
            align-items: center; 
            justify-content: space-between; 
            padding: 8px 0; 
            cursor: pointer; 
            user-select: none; 
        }
        .thinking-header:hover .thinking-toggle-text {
            color: #333;
        }
        .thinking-title { 
            display: flex; 
            align-items: center; 
            gap: 6px; 
            font-size: 14px; 
            font-weight: 400; 
        }
        /* 思考中状态 - 蓝色旋转图标 */
        .thinking-title .think-icon-loading {
            width: 18px;
            height: 18px;
            border: 2px solid #e0e0e0;
            border-top-color: #4d6bfe;
            border-radius: 50%;
            animation: think-spin 0.8s linear infinite;
            flex-shrink: 0;
        }
        @keyframes think-spin {
            to { transform: rotate(360deg); }
        }
        /* 已思考状态 - 绿色勾选图标 */
        .thinking-title .think-icon-done {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: #52c41a;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .thinking-title .think-icon-done svg {
            width: 10px;
            height: 10px;
            color: white;
            stroke-width: 3;
        }
        .thinking-title .think-text-loading {
            color: #999;
        }
        .thinking-title .think-text-done {
            color: #333;
            font-weight: 500;
        }
        .thinking-title .think-duration {
            color: #999;
            font-size: 12px;
            margin-left: 2px;
        }
        /* 收起/展开按钮 */
        .thinking-toggle-text {
            font-size: 13px;
            color: #999;
            transition: color 0.2s;
        }
        .thinking-wrapper.collapsed .thinking-toggle-text-collapsed { display: inline; }
        .thinking-wrapper:not(.collapsed) .thinking-toggle-text-collapsed { display: none; }
        .thinking-wrapper.collapsed .thinking-toggle-text-expanded { display: none; }
        .thinking-wrapper:not(.collapsed) .thinking-toggle-text-expanded { display: inline; }

        .thinking-content { 
            padding: 4px 0 8px 24px; 
            font-size: 14px; 
            color: #8c8c8c; 
            line-height: 1.8; 
            border-left: 2px solid #e8e8e8;
            margin-left: 8px;
        }
        .thinking-wrapper.collapsed .thinking-content {
            border-left: none;
        }
        .thinking-content p { 
            margin: 4px 0; 
            color: #8c8c8c;
        }
        .thinking-content .system-status-group {
            margin-bottom: 12px;
            padding-bottom: 8px;
        }
        .thinking-content .system-status-item {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 2px 0;
            color: #aaa;
            font-size: 12px;
            line-height: 1.5;
        }
        .thinking-content .system-status-item .status-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: #ccc;
            flex-shrink: 0;
        }
        .thinking-content .system-status-item:last-child .status-dot {
            background: #52c41a;
        }
        .thinking-content pre { 
            margin: 8px 0; 
            background: #f5f5f5; 
            padding: 10px 12px; 
            border-radius: 6px; 
            border: none;
            font-size: 13px;
        }
        .thinking-content code {
            background: #f5f5f5;
            color: #555;
            padding: 1px 4px;
            border-radius: 3px;
            font-size: 13px;
        }

        /* #new-chat-btn { background-color: var(--input-bg); border: 1px solid var(--border-color); color: var(--text-primary); font-weight: 600; margin-top: 20px; margin-bottom: 16px; padding: 10px 14px; border-radius: 12px; box-shadow: none; transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1); }
        #new-chat-btn svg { stroke-width: 2; transition: all 0.2s ease; }
        #new-chat-btn:hover svg { color: var(--primary-color); animation: iconBreathing 1.5s infinite alternate ease-in-out; } */
        @keyframes iconBreathing { 0% { filter: drop-shadow(0 0 2px rgba(59, 130, 246, 0.4)); transform: scale(1); } 100% { filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.8)); transform: scale(1.1); } }

        .history-list { flex: 1; overflow-y: auto; overflow-x: hidden; scrollbar-width: none; -ms-overflow-style: none; }
        .history-list::-webkit-scrollbar { display: none; }
        .history-item-wrapper { position: relative; display: flex; align-items: center; margin-bottom: 2px; }
        .history-item-wrapper .nav-item.active { background: var(--hover-bg); font-weight: 500; }
        .history-item-actions { display: none; }
        .history-item-wrapper:hover .history-item-actions { display: flex; opacity: 1 !important; }
        .action-icon-btn { background: transparent; border: none; color: var(--text-tertiary); width: 26px; height: 26px; border-radius: 6px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: 0.2s; }
        .action-icon-btn:hover { background: var(--border-color); color: var(--text-primary); }
        .action-icon-btn.delete-btn:hover { color: #ef4444; }
        .action-icon-btn svg { width: 14px; height: 14px; stroke: currentColor; }

        .main-content { flex: 1; display: flex; flex-direction: column; position: relative; min-width: 0; height: 100vh; height: 100dvh; padding-top: env(safe-area-inset-top, 0px); background: var(--bg-main); }
        .top-nav { height: 60px; padding: 0 16px; padding-top: env(safe-area-inset-top, 0px); display: flex; align-items: center; justify-content: space-between; flex-shrink: 0; z-index: 10; position: absolute; top: 0; width: 100%; background-color: var(--bg-main); }
        .top-left { display: flex; align-items: center; gap: 8px; }
        .toggle-sidebar-btn { background: transparent; border: none; color: var(--text-secondary); width: 40px; height: 40px; border-radius: 8px; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: 0.2s; margin-left: -8px;}
        .toggle-sidebar-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .sidebar:not(.collapsed) ~ .main-content .toggle-sidebar-btn { display: none; }
        
        .new-chat-top-btn { background: transparent; border: none; color: var(--text-secondary); width: 40px; height: 40px; border-radius: 8px; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: 0.2s; }
        .new-chat-top-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .new-chat-top-btn svg { width: 20px; height: 20px; }
        
        .model-selector { background-color: transparent; color: var(--text-primary); border: none; font-size: 18px; font-weight: 600; cursor: pointer; outline: none; padding: 8px 28px 8px 12px; border-radius: 8px; transition: 0.2s; appearance: none; background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23666666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e"); background-repeat: no-repeat; background-position: right 8px center; background-size: 16px; }
        .model-selector:hover { background-color: var(--hover-bg); }
        :root[data-theme="dark"] .model-selector { background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23b4b4b4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e"); }

        .top-right { display: flex; align-items: center; gap: 8px; }
        .icon-btn { background: transparent; border: 1px solid transparent; color: var(--text-secondary); height: 28px; padding: 0 6px; border-radius: 14px; display: flex; align-items: center; justify-content: center; gap: 6px; cursor: pointer; font-size: 14px; transition: 0.2s; }
        .icon-btn:hover { background: var(--hover-bg); color: var(--text-primary); border-color: var(--border-color); }
        .icon-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; }

        /* ----- 聊天区 ----- */
        /* 默认聊天模式：content-wrapper 占满可用空间，使 chat-container 获得约束高度可滚动，input-panel 被推至底部 */
        .content-wrapper { display: flex; flex-direction: column; min-height: 0; padding-top: calc(60px + env(safe-area-inset-top, 0px)); flex: 1 1 0%; overflow: visible; background: var(--bg-main); }
        #main-content-wrapper.state-apps .content-wrapper,
        #main-content-wrapper.state-kb .content-wrapper,
        #main-content-wrapper.state-cloud .content-wrapper,
        #main-content-wrapper.state-skills .content-wrapper,
        #main-content-wrapper.state-agent .content-wrapper,
        #main-content-wrapper.state-talk .content-wrapper { flex: 1 1 0%; overflow: visible; }
        .empty-welcome { display: none; flex: 1; align-items: center; justify-content: center; flex-direction: column; text-align: center; }
        .welcome-center { display: flex; align-items: center; gap: 16px; animation: welcomeFade 1s ease; }
        .welcome-logo { width: 44px; height: 44px; color: var(--primary-color); opacity: 0.9; }
        .welcome-text { display: flex; flex-direction: column; align-items: flex-start; text-align: left; }
        .welcome-text h1 { font-size: 26px; font-weight: 600; color: var(--text-primary); margin: 0; letter-spacing: -0.5px; }
        .welcome-text p { font-size: 18px; font-weight: 500; color: var(--text-tertiary); margin: 2px 0 0 0; }
        @keyframes welcomeFade { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
        @keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.3); } 70% { box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); } 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); } }
        
        /* 细滚动条：保留可见性但保持简洁 */
        ::-webkit-scrollbar { width: 4px; height: 4px; }
        ::-webkit-scrollbar-track { background: transparent; }
        ::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }
        * { -ms-overflow-style: auto; scrollbar-width: thin; scrollbar-color: var(--border-color) transparent; }

        .chat-container { flex: 1; overflow-y: scroll; padding-bottom: 60px; scroll-behavior: smooth; display: flex; flex-direction: column; align-items: center; min-height: 0; }
        
        .state-empty .empty-welcome { display: flex; }
        .state-empty .chat-container { display: none; }
        .state-empty .input-panel { margin-top: auto; border-top: none; }

        /* 应用页面状态 */
        #main-content-wrapper.state-apps .app-page { display: flex; }
        #main-content-wrapper.state-apps .empty-welcome { display: none !important; }
        #main-content-wrapper.state-apps .chat-container { display: none !important; }
        #main-content-wrapper.state-apps .input-panel { display: none !important; }

        /* 云盘页面状态 */
        #main-content-wrapper.state-cloud #cloud-drive-page { display: flex !important; }
        #main-content-wrapper.state-cloud .empty-welcome { display: none !important; }
        /* 知识库页面状态 */
        #main-content-wrapper.state-kb #kb-page { display: flex !important; }
        #main-content-wrapper.state-kb .empty-welcome { display: none !important; }
        #main-content-wrapper.state-kb .chat-container { display: none !important; }
        #main-content-wrapper.state-cloud .chat-container { display: none !important; }

        #main-content-wrapper.state-skills #skills-page { display: flex !important; }
        #main-content-wrapper.state-skills .empty-welcome { display: none !important; }
        #main-content-wrapper.state-skills .chat-container { display: none !important; }
        
        /* 知识库/技能/云盘页面：隐藏输入框和工具栏 */
        #main-content-wrapper.state-kb .input-panel { display: none !important; }
        #main-content-wrapper.state-kb .sidebar-items-bar { display: none !important; }

        .kb-item-card { padding:14px; border-radius:12px; background:var(--bg-main); border:1px solid var(--border-color); cursor:pointer; transition:all 0.2s; }
        .kb-item-card:hover { border-color:var(--primary-color); transform:translateY(-2px); box-shadow:0 6px 20px rgba(0,0,0,0.1); }

        .cloud-asset-card { transition:all 0.2s; }
        .cloud-asset-card:hover { border-color:var(--primary-color) !important; transform:translateY(-2px); box-shadow:0 6px 20px rgba(0,0,0,0.1); }
        .kb-action-btn { padding:3px 8px; border-radius:5px; border:1px solid var(--border-color); background:transparent; color:var(--text-tertiary); cursor:pointer; font-size:10px; transition:all 0.15s; }
        .kb-action-btn:hover { border-color:var(--primary-color); color:var(--primary-color); }
        .kb-action-btn-danger:hover { border-color:#ef4444 !important; color:#ef4444 !important; }
        .kb-at-item.active { background:var(--hover-bg); }
        #kb-ref-cards:empty { display:none; }
        .kb-ctx-item { padding:8px 14px; border-radius:6px; font-size:13px; cursor:pointer; transition:background 0.1s; white-space:nowrap; }
        .kb-ctx-item:hover { background:var(--hover-bg); }
        #main-content-wrapper.state-cloud .input-panel { display: none !important; }
        #main-content-wrapper.state-cloud .sidebar-items-bar { display: none !important; }
        #main-content-wrapper.state-skills .input-panel { display: none !important; }
        #main-content-wrapper.state-skills .sidebar-items-bar { display: none !important; }
        
        /* 工具栏只在普通对话模式显示，其他模式隐藏 */
        body.writer-mode-active .sidebar-items-bar,
        body.coder-mode .sidebar-items-bar,
        body.canvas-mode .sidebar-items-bar,
        #main-content-wrapper.state-talk .sidebar-items-bar { display: none !important; }
        
        /* 知识库/技能/云盘页面：隐藏右上角菜单，只显示操作按钮和关闭按钮 */
        #main-content-wrapper.state-kb .top-right > *:not(.page-action-btn):not(.page-close-btn):not(input[type="file"]),
        #main-content-wrapper.state-cloud .top-right > *:not(.page-action-btn):not(.page-close-btn):not(input[type="file"]),
        #main-content-wrapper.state-skills .top-right > *:not(.page-action-btn):not(.page-close-btn):not(input[type="file"]) { display: none !important; }
        
        /* 隐藏模型列表 */
        #main-content-wrapper.state-kb .model-trigger,
        #main-content-wrapper.state-cloud .model-trigger,
        #main-content-wrapper.state-skills .model-trigger { display: none !important; }
        
        /* 页面操作按钮 */
        .page-action-btn {
            display: none;
            padding: 6px 14px;
            border-radius: 8px;
            border: none;
            background: var(--text-primary);
            color: var(--bg-main);
            cursor: pointer;
            font-size: 12px;
            font-weight: 500;
            transition: all 0.2s;
        }
        .page-action-btn:hover { opacity: 0.9; }
        .page-action-btn-secondary {
            border: 1px solid var(--border-color);
            background: transparent;
            color: var(--text-secondary);
        }
        .page-action-btn-secondary:hover {
            background: var(--hover-bg);
            opacity: 1;
        }
        #main-content-wrapper.state-cloud #cloud-upload-btn { display: block !important; }
        #main-content-wrapper.state-kb #kb-upload-btn { display: block !important; }
        #main-content-wrapper.state-skills #skills-import-btn,
        #main-content-wrapper.state-skills #skills-create-btn { display: block !important; }
        
        /* 页面关闭按钮 */
        .page-close-btn {
            display: none;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: none;
            background: transparent;
            color: var(--text-secondary);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }
        .page-close-btn:hover {
            background: var(--hover-bg);
            color: var(--text-primary);
        }
        #main-content-wrapper.state-kb .page-close-btn,
        #main-content-wrapper.state-cloud .page-close-btn,
        #main-content-wrapper.state-skills .page-close-btn { display: flex !important; }
        
        /* 知识库/技能/云盘页面：内容居中对齐 */
        #main-content-wrapper.state-kb .app-page-header,
        #main-content-wrapper.state-cloud .app-page-header,
        #main-content-wrapper.state-skills .app-page-header {
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        #main-content-wrapper.state-kb .app-page-content,
        #main-content-wrapper.state-cloud .app-page-content,
        #main-content-wrapper.state-skills .app-page-content {
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        
        #main-content-wrapper.state-talk #xss-talk-page { display: flex !important; }
        #main-content-wrapper.state-talk .empty-welcome { display: none !important; }
        #main-content-wrapper.state-talk .chat-container { display: none !important; }

        /*======== Agent智能体页面 ========*/
        #main-content-wrapper.state-agent #agent-page { display: flex !important; }
        #main-content-wrapper.state-agent .empty-welcome { display: none !important; }
        #main-content-wrapper.state-agent .chat-container { display: none !important; }
        #main-content-wrapper.state-agent .input-panel { display: none !important; }
        #main-content-wrapper.state-agent .sidebar-items-bar { display: none !important; }
        #main-content-wrapper.state-agent .top-right > *:not(.page-action-btn):not(.page-close-btn) { display: none !important; }
        #main-content-wrapper.state-agent .model-trigger { display: none !important; }
        #main-content-wrapper.state-agent .page-close-btn { display: flex !important; }
        #main-content-wrapper.state-agent #agent-import-btn { display: flex !important; }
        #main-content-wrapper.state-agent #agent-create-dropdown { display: inline-block !important; }
        #main-content-wrapper.state-agent #agent-create-top-btn { display: inline-flex !important; }
        #main-content-wrapper.state-agent .app-page-header { max-width: 1200px; margin: 0 auto; width: 100%; }
        #main-content-wrapper.state-agent .app-page-content { max-width: 1200px; margin: 0 auto; width: 100%; }

        /* Agent 表单 - 搜索框风格输入 */
        .agent-create-modal .form-group input[type="text"]:not(#agent-form-icon),
        .agent-create-modal .form-group input[type="number"] { padding: 8px 12px; border: 1px solid var(--border-color); border-radius: 10px; font-size: 13px; background: var(--bg-main); color: var(--text-primary); outline: none; transition: all 0.2s; width: 100%; box-sizing: border-box; }
        .agent-create-modal .form-group input[type="text"]:focus:not(#agent-form-icon),
        .agent-create-modal .form-group input[type="number"]:focus { border-color: var(--primary-color); background: var(--bg-primary); box-shadow: 0 0 0 3px rgba(59,130,246,0.08); }
        #main-content-wrapper.state-agent #agent-create-btn { display: block !important; }

        /* Agent 卡片网格 — 对齐 kb-item-card 风格 */
        .agent-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
        .agent-card { padding: 14px; border-radius: 12px; background: var(--bg-main); border: 1px solid var(--border-color); cursor: pointer; transition: all 0.2s; position: relative; }
        .agent-card:hover { border-color: var(--primary-color); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.1); }
        .agent-card-icon { width: 46px; height: 46px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 22px; background: var(--hover-bg); margin-bottom: 10px; overflow: hidden; flex-shrink: 0; }
        .agent-card-icon img { width: 100%; height: 100%; object-fit: cover; }
        .agent-card-name { font-size: 15px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
        .agent-card-desc { font-size: 12px; color: var(--text-tertiary); margin-bottom: 10px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .agent-card-meta { display: flex; gap: 8px; font-size: 11px; color: var(--text-tertiary); }
        .agent-card-meta span { display: flex; align-items: center; gap: 3px; padding: 2px 6px; border-radius: 4px; background: var(--hover-bg); }
        .agent-card-badge { font-size: 10px; padding: 2px 8px; border-radius: 10px; }
        .agent-card-badge.builtin { background: rgba(59,130,246,0.1); color: #3b82f6; }
        .agent-card-badges { position: absolute; top: 10px; right: 10px; display: flex; gap: 4px; }

        /* Agent 卡片操作 — 对齐 kb-action-btn 风格 */
        .agent-card-actions { position: absolute; bottom: 10px; right: 10px; display: flex; gap: 4px; opacity: 0; transition: opacity 0.2s; }
        .agent-card:hover .agent-card-actions { opacity: 1; }
        .agent-card-action-btn { padding: 2px 7px; border-radius: 5px; border: 1px solid var(--border-color); background: transparent; color: var(--text-tertiary); cursor: pointer; font-size: 10px; transition: all 0.15s; }
        .agent-card-action-btn:hover { border-color: var(--primary-color); color: var(--primary-color); }
        .agent-card-action-btn.danger:hover { border-color: #ef4444 !important; color: #ef4444 !important; }

        /* Agent 对话面板 */
        .agent-chat-panel { display: none; flex-direction: column; height: 100%; }
        .agent-chat-panel.active { display: flex; }
        .agent-chat-header { display: flex; align-items: center; gap: 12px; padding: 12px 16px; }
        .agent-chat-header .back-btn { background: none; border: none; cursor: pointer; color: var(--text-secondary); padding: 6px; border-radius: 8px; display: flex; align-items: center; justify-content: center; transition: all 0.15s; }
        .agent-chat-header .back-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .agent-chat-header .agent-info { flex: 1; }
        .agent-chat-header .agent-info .name { font-size: 15px; font-weight: 600; color: var(--text-primary); }
        .agent-chat-header .agent-info .desc { font-size: 12px; color: var(--text-tertiary); }
        .agent-chat-messages { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 8px; }
        .agent-msg { max-width: 85%; padding: 10px 14px; border-radius: 12px; font-size: 14px; line-height: 1.6; word-break: break-word; }
        .agent-msg.user { align-self: flex-end; background: var(--text-primary); color: var(--bg-main); border-bottom-right-radius: 4px; }
        .agent-msg.assistant { align-self: flex-start; background: transparent; color: var(--text-primary); border-bottom-left-radius: 4px; }
        .agent-chat-input-area { padding: 12px 16px; display: flex; position: relative; }
        .agent-chat-input-area textarea { flex: 1; border: none; padding: 6px 4px; font-size: 14px; resize: none; min-height: 24px; max-height: 120px; background: transparent; color: var(--text-primary); font-family: inherit; outline: none; }
        #agent-input-wrapper:focus-within { border-color: var(--text-secondary) !important; }

        /* Agent 工具调用卡片 */
        .tool-call-card { background: transparent; border: 1px solid var(--border-color); border-radius: 8px; padding: 10px 14px; margin: 8px 0; font-size: 13px; }
        .tool-call-card .tool-header { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
        .tool-call-card .tool-status { display: inline-flex; align-items: center; gap: 4px; font-size: 11px; padding: 2px 8px; border-radius: 10px; }
        .tool-call-card .tool-status.running { background: rgba(245,158,11,0.08); color: #d97706; }
        .tool-call-card .tool-status.success { background: rgba(16,185,129,0.08); color: #059669; }
        .tool-call-card .tool-status.error { background: rgba(239,68,68,0.08); color: #dc2626; }
        .tool-call-card .tool-result { font-size: 12px; color: var(--text-secondary); white-space: pre-wrap; max-height: 200px; overflow-y: auto; margin-top: 6px; padding: 6px 8px; background: var(--bg-primary); border-radius: 4px; font-family: monospace; }

        /* Agent 状态栏 */
        .agent-status-bar { display: flex; align-items: center; gap: 16px; padding: 6px 16px; font-size: 11px; color: var(--text-tertiary); }
        .agent-status-bar span { display: flex; align-items: center; gap: 4px; }

        /* Agent 创建/编辑弹窗 — 对齐现有弹窗风格 */
        .agent-create-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.15); z-index: 10000; justify-content: center; align-items: center; }
        .agent-create-overlay.active { display: flex; }
        .agent-create-modal { background: var(--bg-primary); border-radius: 16px; width: 90%; max-width: 560px; max-height: 85vh; overflow-y: auto; padding: 24px; box-shadow: none; }
        .agent-create-modal h2 { margin: 0 0 20px; font-size: 18px; font-weight: 600; color: var(--text-primary); }
        .agent-create-modal .form-group { margin-bottom: 14px; }
        .agent-create-modal .form-group label { display: block; font-size: 12px; font-weight: 500; margin-bottom: 5px; color: var(--text-secondary); }
        .agent-create-modal .form-group input, .agent-create-modal .form-group textarea, .agent-create-modal .form-group select { width: 100%; padding: 8px 12px; border: 1px solid var(--border-color); border-radius: 8px; font-size: 13px; background: var(--bg-primary); color: var(--text-primary); box-sizing: border-box; outline: none; transition: border-color 0.2s; }
        .agent-create-modal .form-group input:focus, .agent-create-modal .form-group textarea:focus, .agent-create-modal .form-group select:focus { border-color: var(--primary-color); }
        .agent-create-modal .form-group textarea { min-height: 100px; font-family: monospace; font-size: 12px; resize: vertical; }
        .agent-create-modal .form-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }
        .agent-create-modal .form-actions button { padding: 8px 18px; border-radius: 8px; font-size: 13px; font-weight: 500; cursor: pointer; transition: all 0.15s; }
        .agent-create-modal .btn-primary { background: var(--text-primary); color: var(--bg-main); border: none; }
        .agent-create-modal .btn-primary:hover { opacity: 0.9; }
        .agent-create-modal .btn-secondary { background: transparent; color: var(--text-secondary); border: 1px solid var(--border-color); }
        .agent-create-modal .btn-secondary:hover { background: var(--hover-bg); }

        /* 表单行 */
        .form-row { display: flex; gap: 12px; }
        .form-row .form-group { flex: 1; }

        /* Agent 圆形图标选择器 */
        .agent-avatar-option { width: 38px; height: 38px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; cursor: pointer; border: 2px solid transparent; background: var(--hover-bg); transition: all 0.15s; }
        .agent-avatar-option:hover { background: var(--border-color); transform: scale(1.1); }
        .agent-avatar-option.selected { border-color: var(--primary-color, #3b82f6); background: rgba(59,130,246,0.1); }

        /* Agent 选择器 (top-nav 中，模型选择器旁边) */
        .agent-selector { position: relative; margin-left: 6px; z-index: 99998; }
        .agent-selector-trigger {
            display: flex; align-items: center; gap: 6px; padding: 4px 10px;
            border-radius: 8px; color: var(--text-primary); cursor: pointer;
            font-size: 12px; font-weight: 500; transition: all 0.2s;
            background: none; border: 0.5px solid var(--border-color);
            white-space: nowrap; user-select: none;
        }
        .agent-selector-trigger:hover { background: var(--hover-bg); }
        .agent-selector-trigger.active { background: rgba(16,163,127,0.08); border-color: rgba(16,163,127,0.25); }
        .agent-selector-trigger .agent-lock-icon { width: 12px; height: 12px; color: var(--text-tertiary); flex-shrink: 0; }
        .agent-selector-menu { display: none; position: fixed; left: 0px; top: 0px; width: 340px; max-width: 90vw; background: var(--bg-main); border: 1px solid var(--border-color); border-radius: 16px; box-shadow: 0 10px 40px rgba(0,0,0,0.1); z-index: 100001; padding: 12px 0; }
        .agent-selector-menu.show { display: flex; flex-direction: column; }
        .agent-selector-scroll { overflow-y: auto; max-height: 240px; padding: 0 12px; }
        .agent-selector-bottom { flex-shrink: 0; padding: 8px 12px 0; }
        .agent-selector-item { display: flex; align-items: center; gap: 8px; padding: 6px 12px; border-radius: 10px; cursor: pointer; font-size: 13px; font-weight: 600; color: var(--text-primary); transition: background 0.2s; margin-bottom: 2px; }
        .agent-selector-item:hover { background: var(--hover-bg); }
        .agent-selector-item.selected { background: rgba(59,130,246,0.08); color: var(--primary-color); font-weight: 600; }

        /* Agent 状态栏 (主聊天中) */
        .chat-agent-status-bar { display: none; align-items: center; gap: 10px; padding: 6px 16px; font-size: 11px; color: var(--text-tertiary); border-bottom: 1px solid var(--border-color); background: var(--bg-primary); flex-shrink: 0; }
        .chat-agent-status-bar.active { display: flex; }

        /* Agent 消息容器（与普通对话统一） */
        .agent-body-wrapper { padding: 8px 0; }
        .agent-body-wrapper .thinking-wrapper { margin-bottom: 6px; }
        .agent-answer-box { font-size: 14px; line-height: 1.65; color: var(--text-primary); }
        .agent-answer-box pre { background: var(--code-bg); border-radius: 8px; padding: 12px; overflow-x: auto; font-size: 13px; }
        .agent-answer-box code { font-family: 'JetBrains Mono', 'Fira Code', monospace; font-size: 13px; }
        .agent-action-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 0; margin-top: 8px; border-top: 1px solid var(--border-color); font-size: 11px; color: var(--text-tertiary); }
        .agent-running-indicator { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-tertiary); padding: 4px 0; }

        /* 主聊天中的 Agent 工具卡片 */
        .chat-tool-card { background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 8px; padding: 10px 14px; margin: 6px 0; font-size: 12px; max-width: 520px; }
        .chat-tool-card .tool-card-header { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; font-weight: 500; color: var(--text-primary); }
        .chat-tool-card .tool-card-badge { display: inline-flex; align-items: center; gap: 3px; font-size: 10px; padding: 1px 6px; border-radius: 8px; font-weight: 500; }
        .chat-tool-card .tool-card-badge.running { background: rgba(245,158,11,0.1); color: #d97706; }
        .chat-tool-card .tool-card-badge.success { background: rgba(16,185,129,0.1); color: #059669; }
        .chat-tool-card .tool-card-badge.error { background: rgba(239,68,68,0.1); color: #dc2626; }
        .chat-tool-card .tool-card-args { font-size: 11px; color: var(--text-tertiary); font-family: monospace; max-height: 60px; overflow-y: auto; }
        .chat-tool-card .tool-card-result { font-size: 11px; color: var(--text-secondary); font-family: monospace; max-height: 120px; overflow-y: auto; margin-top: 4px; padding: 4px 6px; background: var(--hover-bg); border-radius: 4px; white-space: pre-wrap; word-break: break-all; }

        /* 主聊天中的 Agent 审批卡片 */
        .chat-approval-card { background: #fffbeb; border: 1px solid #fcd34d; border-radius: 10px; padding: 12px 14px; margin: 8px 0; font-size: 12px; max-width: 460px; }
        .chat-approval-card .approval-header { font-weight: 600; margin-bottom: 4px; color: #92400e; }
        .chat-approval-card .approval-args { font-size: 11px; color: var(--text-tertiary); margin-bottom: 6px; font-family: monospace; max-height: 80px; overflow-y: auto; }
        .chat-approval-card .approval-hint { font-size: 11px; color: #dc2626; margin-bottom: 8px; }
        .chat-approval-card .approval-btns { display: flex; gap: 8px; }
        .chat-approval-card .approval-btns button { padding: 5px 14px; border-radius: 6px; cursor: pointer; font-size: 11px; font-weight: 500; transition: all 0.15s; }
        .chat-approval-card .approve-btn { background: #10b981; color: #fff; border: none; }
        .chat-approval-card .approve-btn:hover { opacity: 0.9; }
        .chat-approval-card .reject-btn { background: transparent; color: var(--text-secondary); border: 1px solid var(--border-color); }
        .chat-approval-card .reject-btn:hover { background: var(--hover-bg); }

        /* 手机端 */
        @media (max-width: 768px) {
            .agent-grid { grid-template-columns: 1fr; }
            .agent-card-actions { opacity: 1; }
            .agent-create-modal { width: 95%; padding: 16px; border-radius: 16px 16px 0 0; align-self: flex-end; max-height: 90vh; }
            .form-row { flex-direction: column; gap: 0; }
            #agent-create-overlay .form-group [style*="grid-template-columns:1fr 1fr"] { grid-template-columns: 1fr !important; }
            .agent-chat-header { padding: 8px 12px; }
            .agent-chat-messages { padding: 8px 12px; }
            .agent-chat-input-area { padding: 8px 10px; }
            #agent-input-wrapper { border-radius: 20px; }
        }
        #main-content-wrapper.state-talk .input-panel { display: none !important; }
        #main-content-wrapper.state-talk .app-page:not(#xss-talk-page) { display: none !important; }
        
        /* ----- Assistant Avatar & Thinking Ring ----- */
        .assistant-avatar {
            width: 24px;
            height: 24px;
            position: absolute;
            left: -40px;
            top: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 5;
        }
        .assistant-icon-wrapper {
            width: 20px;
            height: 20px;
            background: var(--primary-color); 
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            position: relative;
            z-index: 2;
        }

        .assistant-icon-wrapper svg {
            width: 14px;
            height: 14px;
        }

        /* The thinking ring */
        .assistant-avatar .thinking-ring {
            position: absolute;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 2px solid transparent;
            border-top-color: #3b82f6;
            animation: ring-spin 1s linear infinite;
            display: none; /* Hidden by default */
            z-index: 1;
        }

        .assistant-avatar.loading .thinking-ring {
            display: block;
        }

        .reply-thinking-loading {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-tertiary);
            font-size: 15px;
            padding: 8px 0;
            animation: fadeIn 0.3s ease;
        }

        .thinking-loading-ring {
            width: 18px;
            height: 18px;
            border: 2px solid var(--border-color);
            border-top-color: #3b82f6;
            border-radius: 50%;
            animation: ring-spin 1s linear infinite;
        }

        .welcome-v2 {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 60px 20px;
            width: 100%;
            max-width: 800px;
            margin: -25px auto 0;
            text-align: left;
            animation: fadeIn 0.6s ease-out;
        }

        .welcome-v2-header, .welcome-v2-desc, .upgrade-prompt, .sphere-avatar {
            align-self: flex-start;
        }

        .sphere-avatar {
            width: 66px;
            height: 66px;
            background: #6366f1;
            border-radius: 50%;
            position: relative;
            box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            animation: sphereFloat 4s ease-in-out infinite;
            cursor: pointer;
            border: none;
        }

        .sphere-eyes {
            display: flex;
            gap: 12px;
            position: relative;
            top: -5px;
        }

        .sphere-eye {
            width: 30px;
            height: 30px;
            background: white;
            border-radius: 50%;
            position: relative;
            overflow: hidden;
        }

        .sphere-pupil {
            width: 16px;
            height: 16px;
            background: #6366f1;
            border-radius: 50%;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            animation: lookAround 8s infinite cubic-bezier(0.4, 0, 0.2, 1);
        }

        @keyframes sphereFloat {
            0%, 100% { transform: translateY(0) scale(1); }
            50% { transform: translateY(-12px) scale(1.02); }
        }

        @keyframes lookAround {
            0%, 10%, 90%, 100% { transform: translate(-50%, -50%); }
            15%, 30% { transform: translate(-10%, -50%); }
            35%, 50% { transform: translate(-90%, -50%); }
            55%, 70% { transform: translate(-50%, -90%); }
            75%, 85% { transform: translate(-50%, -10%); }
        }

        .welcome-v2-header {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.4;
            margin-top: -10px;
        }

        .welcome-v2-desc {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 10px;
            max-width: 600px;
            line-height: 1.6;
        }

        .upgrade-prompt {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 20px;
            background: rgba(59, 130, 246, 0.1);
            border: 1px solid rgba(59, 130, 246, 0.2);
            border-radius: 12px;
            color: #3b82f6;
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 10px;
            cursor: pointer;
            transition: all 0.2s;
            width: fit-content;
        }

        .upgrade-prompt:hover {
            background: rgba(59, 130, 246, 0.2);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
        }

        .suggestion-section {
            display: flex;
            flex-direction: column;
            gap: 0;
            width: 100%;
            text-align: left;
            padding-top: 0;
            border-top: none;
            margin-top: 0;
        }

        .suggestion-title {
            font-size: 14px;
            color: var(--text-tertiary);
            font-weight: 600;
            margin-bottom: 4px;
            display: flex;
            align-items: center;
            gap: 8px;
            border: none;
            outline: none;
            background: transparent;
            padding: 0;
            letter-spacing: 0;
            text-transform: none;
        }

        .suggestion-chips {
            display: flex;
            flex-direction: column;
            gap: 0;
            width: 100%;
        }

        .suggestion-chip {
            padding: 4px 0;
            background: transparent;
            border: none;
            border-radius: 0;
            font-size: 15px;
            color: var(--text-secondary);
            cursor: pointer;
            text-align: left;
            transition: color 0.15s;
            display: block;
            line-height: 1.5;
        }
        .suggestion-chip:hover {
            color: var(--primary-color);
        }

        /* 最新应用 - 横向滚动 */
        .template-section {
            width: 100%;
            max-width: 680px;
            margin-top: 16px;
        }
        .template-title {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-tertiary);
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .latest-apps-row {
            display: flex;
            gap: 12px;
            overflow-x: auto;
            padding-bottom: 4px;
            scrollbar-width: none;
        }
        .latest-apps-row::-webkit-scrollbar { display: none; }
        .latest-app-item {
            flex-shrink: 0;
            width: 160px;
            cursor: pointer;
            transition: transform 0.15s;
        }
        .latest-app-item:hover { transform: translateY(-2px); }
        .latest-app-thumb {
            width: 160px;
            height: 90px;
            border-radius: 8px;
            overflow: hidden;
            background: #f8f9fa;
            position: relative;
        }
        .latest-app-thumb iframe {
            width: 640px;
            height: 360px;
            border: none;
            transform: scale(0.25);
            transform-origin: top left;
            pointer-events: none;
            position: absolute;
            top: 0;
            left: 0;
        }
        .latest-app-thumb-fallback {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--text-tertiary);
            background: var(--hover-bg);
        }
        .latest-app-name {
            font-size: 12px;
            font-weight: 500;
            color: var(--text-primary);
            margin-top: 6px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        @keyframes ring-spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        /* ========== 流式响应状态动画系统 ========== */

        /* 1. 初始加载状态 - 脉冲点动画 */
        .reply-thinking-loading {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-tertiary);
            font-size: 15px;
            padding: 8px 0;
            animation: fadeIn 0.3s ease;
        }
        .thinking-loading-ring {
            width: 18px;
            height: 18px;
            border: 2px solid var(--border-color);
            border-top-color: #3b82f6;
            border-radius: 50%;
            animation: ring-spin 1s linear infinite;
        }
        /* 三点跳跃动画 */
        .thinking-dots {
            display: inline-flex;
            align-items: center;
            gap: 3px;
            margin-left: 2px;
        }
        .thinking-dots span {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--text-tertiary);
            animation: dotBounce 1.4s ease-in-out infinite;
        }
        .thinking-dots span:nth-child(2) { animation-delay: 0.2s; }
        .thinking-dots span:nth-child(3) { animation-delay: 0.4s; }
        @keyframes dotBounce {
            0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
            40% { transform: scale(1); opacity: 1; }
        }

        /* 2. 思考中状态 - 进度指示 */
        .thinking-phase-indicator {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            animation: fadeIn 0.3s ease;
        }
        .thinking-phase-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #3b82f6;
            animation: phasePulse 1.5s ease-in-out infinite;
        }
        .thinking-phase-text {
            font-size: 13px;
            color: var(--text-tertiary);
            font-weight: 400;
        }
        .video-progress-container {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            background: var(--hover-bg);
            border-radius: 10px;
            margin: 8px 0;
        }
        .video-progress-icon {
            font-size: 24px;
            flex-shrink: 0;
            animation: videoIconPulse 2s infinite;
        }
        @keyframes videoIconPulse { 0%,100% { opacity:1; } 50% { opacity:0.5; } }
        .video-progress-info {
            flex: 1;
            min-width: 0;
        }
        .video-progress-label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .video-progress-bar {
            height: 6px;
            background: var(--border-color);
            border-radius: 3px;
            overflow: hidden;
        }
        .video-progress-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, #6366f1, #8b5cf6, #a78bfa);
            border-radius: 3px;
            transition: width 0.5s ease;
        }
        .video-progress-percent {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-color, #6366f1);
            flex-shrink: 0;
            min-width: 36px;
            text-align: right;
        }
        @keyframes phasePulse {
            0%, 100% { transform: scale(1); opacity: 0.5; }
            50% { transform: scale(1.3); opacity: 1; }
        }

        /* 3. 流式省略号动画 - 飘动效果 */
        .streaming-dots {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-left: 4px;
            vertical-align: baseline;
        }
        .streaming-dots span {
            display: inline-block;
            font-size: 14px;
            font-weight: 700;
            color: #3b82f6;
            animation: floatDot 1.6s ease-in-out infinite;
        }
        .streaming-dots span:nth-child(1) { animation-delay: 0s; }
        .streaming-dots span:nth-child(2) { animation-delay: 0.25s; }
        .streaming-dots span:nth-child(3) { animation-delay: 0.5s; }
        @keyframes floatDot {
            0%, 100% { transform: translateY(0); opacity: 0.4; }
            50% { transform: translateY(-4px); opacity: 1; }
        }

        /* 4. 思考完成过渡动画 */
        .thinking-wrapper.done-transition .thinking-header {
            animation: thinkDoneSlide 0.4s ease-out;
        }
        @keyframes thinkDoneSlide {
            0% { transform: translateX(-4px); opacity: 0.6; }
            100% { transform: translateX(0); opacity: 1; }
        }

        /* 5. 正文出现动画 */
        .answer-appear {
            animation: answerFadeIn 0.4s ease-out;
        }
        @keyframes answerFadeIn {
            from { opacity: 0; transform: translateY(6px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* 6. 思考内容流式效果 */
        .thinking-content.streaming-think {
            position: relative;
        }
        .thinking-content.streaming-think::after {
            content: ' ...';
            color: #3b82f6;
            animation: floatDot 1.6s ease-in-out infinite;
        }

        /* ========== /流式响应状态动画系统 ========== */

        /* Adjust message content padding to make space for absolute avatar on desktop */
        .assistant-row {
            position: relative;
        }

        .message-row { 
            display: flex; flex-direction: column; padding: 14px 0; 
            animation: fadeIn 0.3s ease; width: 100%; align-items: center;
        }
        .message-content { width: 100%; max-width: 760px; display: flex; flex-direction: column; padding: 0 16px; position: relative; }
        .message-row.user-row .message-content { align-items: flex-end; }
        
        /* API Error Card */
        .api-error-card {
            margin-top: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            background: rgba(239, 68, 68, 0.06);
            border: 1px solid rgba(239, 68, 68, 0.15);
            border-radius: 10px;
            animation: errorFadeIn 0.3s ease;
            width: fit-content;
            max-width: 100%;
            box-sizing: border-box;
        }
        .error-header {
            display: flex;
            align-items: center;
            gap: 6px;
            color: #ef4444;
            font-size: 13px;
            font-weight: 500;
        }
        .error-header svg { width: 15px; height: 15px; flex-shrink: 0; }
        .error-body { display: none; }
        .error-footer { margin: 0; }
        .retry-btn {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 4px 10px;
            background: transparent;
            color: #ef4444;
            border: 1px solid rgba(239, 68, 68, 0.3);
            border-radius: 6px;
            font-size: 12px;
            font-weight: 500;
            cursor: pointer;
            transition: 0.2s;
            flex-shrink: 0;
        }
        .retry-btn:hover { background: rgba(239, 68, 68, 0.08); }
        .retry-btn svg { width: 12px; height: 12px; }

        @keyframes errorFadeIn {
            from { opacity: 0; transform: translateY(4px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .message-row.user-row .bubble { max-width: 70%; align-self: flex-end; background-color: var(--user-bubble); color: var(--text-primary); padding: 12px 20px; border-radius: 24px; line-height: 1.6; word-wrap: break-word; font-size: 15px; position: relative; }
        .user-row .bubble .markdown-body { background: transparent; font-size: inherit; color: inherit; }
        .user-row .bubble .markdown-body p { margin-bottom: 8px; }
        .user-row .bubble .markdown-body p:last-child { margin-bottom: 0; }
        
        .chat-img-preview { max-width: 100%; max-height: 240px; height: auto; width: auto; border-radius: 12px; margin-bottom: 8px; border: 1px solid var(--border-color); display: block; cursor: zoom-in; transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1); }
        .chat-img-preview:hover { transform: scale(1.01); box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
        
        /* Agent 步骤流可视化 */
        .agent-flow { display: flex; flex-direction: column; gap: 0; margin: 8px 0 16px; position: relative; }
        .agent-flow-step { display: flex; align-items: flex-start; gap: 10px; position: relative; padding: 6px 0; animation: stepIn 0.3s ease; }
        @keyframes stepIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
        .agent-flow-step .step-connector { position: absolute; left: 14px; top: 28px; width: 2px; height: calc(100% - 20px); background: var(--border-color); }
        .agent-flow-step:last-child .step-connector { display: none; }
        .agent-flow-step .step-dot { width: 28px; height: 28px; min-width: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; z-index: 1; background: var(--hover-bg); border: 2px solid var(--border-color); color: var(--text-secondary); transition: all 0.3s; }
        .agent-flow-step .step-dot.done { background: rgba(16, 185, 129, 0.1); border-color: #10b981; color: #10b981; }
        .agent-flow-step .step-dot.active { background: rgba(59, 130, 246, 0.12); border-color: var(--primary-color); color: var(--primary-color); animation: pulseDot 1.5s infinite; }
        .agent-flow-step .step-dot.error { background: rgba(239, 68, 68, 0.1); border-color: #ef4444; color: #ef4444; }
        @keyframes pulseDot { 0%,100% { box-shadow: 0 0 0 0 rgba(59,130,246,0.3); } 50% { box-shadow: 0 0 0 6px rgba(59,130,246,0); } }
        .agent-flow-step .step-body { flex: 1; min-width: 0; }
        .agent-flow-step .step-title { font-size: 13px; font-weight: 600; color: var(--text-primary); display: flex; align-items: center; gap: 6px; }
        .agent-flow-step .step-desc { font-size: 11px; color: var(--text-tertiary); margin-top: 2px; }
        .agent-flow-step .step-code { font-size: 11px; background: var(--code-bg); border-radius: 4px; padding: 4px 8px; margin-top: 4px; color: var(--text-secondary); font-family: monospace; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }
        
        /* 媒体生成卡片 */
        .media-card { display: flex; gap: 12px; padding: 12px; border-radius: 14px; background: var(--code-bg); border: 1px solid var(--border-color); margin: 4px 0; max-width: 480px; transition: all 0.2s; cursor: pointer; }
        .media-card:hover { border-color: var(--primary-color); box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
        .media-card-thumb { width: 100px; height: 100px; flex-shrink: 0; border-radius: 10px; overflow: hidden; cursor: zoom-in; display: flex; align-items: center; justify-content: center; background: var(--bg-main); border: 1px solid var(--border-color); }
        .media-card-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
        .media-card-thumb video { width: 100%; height: 100%; object-fit: cover; display: block; }
        .media-card-thumb .media-play-icon { position: absolute; width: 28px; height: 28px; border-radius: 50%; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; color: #fff; }
        .media-card-info { flex: 1; display: flex; flex-direction: column; justify-content: center; gap: 4px; min-width: 0; }
        .media-card-title { font-size: 13px; font-weight: 600; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
        .media-card-meta { font-size: 11px; color: var(--text-tertiary); display: flex; gap: 8px; flex-wrap: wrap; }
        .media-card-prompt { font-size: 12px; color: var(--text-secondary); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .media-card-actions { display: flex; gap: 4px; margin-top: 4px; }
        .media-card-actions .mini-btn { font-size: 11px; padding: 3px 8px; border-radius: 6px; border: 1px solid var(--border-color); background: transparent; color: var(--text-tertiary); cursor: pointer; transition: all 0.15s; display: inline-flex; align-items: center; gap: 3px; }
        .media-card-actions .mini-btn:hover { border-color: var(--primary-color); color: var(--primary-color); }
        .media-card-actions .mini-btn svg { width: 12px; height: 12px; }
        @media (max-width: 520px) {
            .media-card { max-width: 100%; flex-direction: column; }
            .media-card-thumb { width: 100%; height: 140px; }
        }
        
        /* Lightbox styles */
        .lightbox-modal { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.9); z-index: 10000; display: none; align-items: center; justify-content: center; cursor: zoom-out; opacity: 0; transition: opacity 0.3s ease; backdrop-filter: blur(8px); }
        .lightbox-modal.active { display: flex; opacity: 1; }
        .lightbox-content { max-width: 95vw; max-height: 95vh; object-fit: contain; border-radius: 8px; box-shadow: 0 0 40px rgba(0, 0, 0, 0.6); animation: lightboxIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1); }
        @keyframes lightboxIn { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
        .lightbox-close { position: absolute; top: 24px; right: 24px; color: white; cursor: pointer; background: rgba(255, 255, 255, 0.1); border-radius: 50%; padding: 10px; display: flex; align-items: center; justify-content: center; border: 1px solid rgba(255, 255, 255, 0.2); transition: 0.2s; }
        .lightbox-close:hover { background: rgba(239, 68, 68, 0.8); border-color: transparent; }
        
        .message-row.assistant-row .message-content { align-items: flex-start; }
        .msg-body-wrapper { width: 100%; }

        /* ----- Markdown ----- */
        .markdown-body { line-height: 1.75; font-size: 15px; color: var(--text-primary); width: 100%; word-break: break-word; }
        .markdown-body video { max-width: 100%; border-radius: 12px; margin: 8px 0; }
        .video-player-wrapper { position: relative; display: inline-block; max-width: 100%; margin: 8px 0; border-radius: 12px; overflow: hidden; background: #000; }
        .video-player-wrapper video { display: block; max-width: 100%; border-radius: 12px; }
        .video-player-badge { position: absolute; top: 8px; right: 8px; background: rgba(0,0,0,0.6); color: #fff; font-size: 12px; padding: 2px 8px; border-radius: 10px; }
        .video-saved-toast { font-size: 13px; color: var(--text-tertiary); margin-top: 4px; }
        .markdown-body p { margin-bottom: 16px; }
        .markdown-body p:last-child { margin-bottom: 0; }
        .markdown-body h1, .markdown-body h2, .markdown-body h3, .markdown-body h4 { margin-top: 32px; margin-bottom: 16px; font-weight: 600; line-height: 1.4; color: var(--text-primary); }
        .markdown-body h1 { font-size: 24px; padding-bottom: 8px; }
        .markdown-body h2 { font-size: 20px; padding-bottom: 6px; }
        .markdown-body ul, .markdown-body ol { margin-bottom: 16px; padding-left: 24px; }
        .markdown-body li { margin-bottom: 8px; }
        .markdown-body code { font-family: 'Fira Code', Consolas, Monaco, monospace; font-size: 14px; background: var(--code-bg); padding: 3px 6px; border-radius: 6px; color: #000000; font-weight: 500; }
        :root[data-theme="dark"] .markdown-body code { color: #ffffff; }
        .markdown-body blockquote { border-left: 4px solid #c8c8c8; padding-left: 16px; color: var(--text-secondary); margin: 16px 0; }
        :root[data-theme="dark"] .markdown-body blockquote { border-left-color: #4b4b4b; }
        .markdown-body table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
        .markdown-body th, .markdown-body td { border: 1px solid var(--border-color); padding: 10px 14px; text-align: left; }
        .markdown-body th { background-color: var(--code-bg); font-weight: 600; }

        .code-wrapper { 
            background-color: #fafafa !important; 
            border-radius: 12px; 
            margin: 20px 0; 
            overflow: hidden; 
            border: 1px solid #f0f0f0; 
            transition: all 0.3s ease;
        }
        :root[data-theme="dark"] .code-wrapper { 
            background-color: #161b22 !important; 
            border: 1px solid rgba(255, 255, 255, 0.05); 
        }
        .code-header { 
            display: flex; 
            align-items: center; 
            justify-content: space-between; 
            padding: 8px 16px; 
            background: transparent; 
        }
        :root[data-theme="dark"] .code-header { 
            border-bottom: none; 
        }
        .code-lang { 
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px; 
            color: #495057; 
            font-family: var(--font-family); 
            text-transform: uppercase; 
            font-weight: 600; 
            letter-spacing: 0.5px;
        }
        :root[data-theme="dark"] .code-lang { color: #8b949e; }
        .code-lang svg { width: 14px; height: 14px; stroke-width: 2.5; }
        
        .code-actions { display: flex; gap: 4px; align-items: center; }
        /* 流式期间隐藏代码块操作按钮 */
        .markdown-body.streaming .code-action-btn { display: none !important; }
        .markdown-body.streaming .code-header { pointer-events: none; }

        .code-action-btn { 
            display: flex; align-items: center; justify-content: center; 
            width: 28px; height: 28px; background: transparent; border: none; 
            border-radius: 6px; cursor: pointer; color: #64748b; 
            transition: all 0.2s; padding: 0;
        }
        .code-action-btn svg { width: 16px; height: 16px; stroke-width: 1.5; }
        .code-action-btn:hover { 
            background: #f1f5f9; 
            color: #1e293b;
        }
        :root[data-theme="dark"] .code-action-btn:hover {
            background: #21262d; 
            color: #c9d1d9;
        }
        .runnable-btn {
            position: relative;
            color: #64748b !important;
            background: transparent !important;
            border: none !important;
        }
        .runnable-btn:hover {
            background: #f1f5f9 !important;
            color: #1e293b !important;
        }
        :root[data-theme="dark"] .runnable-btn:hover {
            background: #21262d !important;
            color: #c9d1d9 !important;
        }
        .run-badge {
            display: none; /* Hide in default view to match image */
        }
        
        /* Artifact Card Enhanced Styles */
        .artifact-card {
            display: flex;
            align-items: center;
            padding: 16px;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin: 12px 0;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            background: #ffffff;
        }
        .artifact-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 24px -10px rgba(0,0,0,0.1);
            border-color: #10b981;
        }
        .artifact-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 16px;
            flex-shrink: 0;
        }
        .artifact-info { flex: 1; min-width: 0; }
        .artifact-title {
            font-size: 15px;
            font-weight: 600;
            color: #1a202c;
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .artifact-meta { font-size: 12px; color: #718096; }
        .artifact-action-hint {
            font-size: 10px;
            color: #10b981;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-left: 12px;
        }
        .artifact-card::after {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 4px;
            background: #10b981;
            opacity: 0;
            transition: opacity 0.2s;
        }
        .artifact-card:hover::after { opacity: 1; }
        .editor-overlay {
            position: absolute;
            inset: 0;
            background: var(--bg-main);
            z-index: 2000;
            display: none;
            flex-direction: column;
            animation: slideInRight 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .editor-overlay.active { display: flex; }
        @keyframes slideInRight {
            from { transform: translateX(100%); }
            to { transform: translateX(0); }
        }

        /* 版本历史面板 */
        .version-panel {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 420px;
            max-width: 90vw;
            background: var(--bg-main);
            border-left: 1px solid var(--border-color);
            z-index: 2100;
            display: none;
            flex-direction: column;
            animation: slideInRight 0.25s ease;
            box-shadow: -4px 0 20px rgba(0,0,0,0.08);
        }
        .version-panel.active { display: flex; }
        .version-panel-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            flex-shrink: 0;
        }
        .version-panel-title {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .version-panel-close {
            background: transparent;
            border: none;
            color: var(--text-tertiary);
            cursor: pointer;
            padding: 4px;
            border-radius: 6px;
            transition: 0.2s;
            display: flex;
            align-items: center;
        }
        .version-panel-close:hover { background: var(--hover-bg); color: var(--text-primary); }
        .version-panel-actions {
            padding: 12px 20px;
            border-bottom: 1px solid var(--border-color);
            flex-shrink: 0;
        }
        .version-save-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 100%;
            padding: 10px 16px;
            background: var(--primary-color);
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            justify-content: center;
        }
        .version-save-btn:hover { opacity: 0.9; transform: translateY(-1px); }
        .version-save-btn:active { transform: translateY(0); }
        .version-more-apps-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 100%;
            padding: 10px 16px;
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: 0.2s;
            justify-content: center;
            margin-top: 8px;
        }
        .version-more-apps-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .version-panel-list {
            flex: 1;
            overflow-y: auto;
            padding: 12px;
        }
        .version-panel-list::-webkit-scrollbar { width: 4px; }
        .version-panel-list::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }
        .version-empty {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 12px;
            padding: 60px 20px;
            text-align: center;
        }
        .version-empty p {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            margin: 0;
        }
        .version-empty span {
            font-size: 12px;
            color: var(--text-tertiary);
            line-height: 1.5;
        }
        .version-card {
            background: var(--bg-sidebar);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 0;
            margin-bottom: 8px;
            transition: 0.2s;
            cursor: default;
            display: flex;
            overflow: hidden;
        }
        .version-card:hover { border-color: var(--primary-color); }
        .version-card-thumb {
            width: 120px;
            min-height: 75px;
            flex-shrink: 0;
            background: var(--hover-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            overflow: hidden;
            position: relative;
            border-right: 1px solid var(--border-color);
        }
        .version-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .version-card-thumb-placeholder {
            width: 100%;
            height: 100%;
            align-items: center;
            justify-content: center;
            background: var(--hover-bg);
        }
        .version-card-info {
            flex: 1;
            padding: 12px 14px;
            min-width: 0;
        }
        .version-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 8px;
        }
        .version-card-time {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .version-card-badge {
            font-size: 10px;
            padding: 2px 6px;
            border-radius: 4px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--primary-color);
            font-weight: 500;
        }
        .version-card-desc {
            font-size: 12px;
            color: var(--text-tertiary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .version-card-meta {
            font-size: 11px;
            color: var(--text-tertiary);
            margin-bottom: 10px;
        }
        .version-card-actions {
            display: flex;
            gap: 6px;
        }
        .version-card-btn {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 4px;
            padding: 8px 4px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background: transparent;
            color: var(--text-secondary);
            font-size: 12px;
            font-weight: 500;
            cursor: pointer;
            transition: 0.15s;
        }
        .version-card-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .version-card-btn.restore { border-color: var(--primary-color); color: var(--primary-color); }
        .version-card-btn.restore:hover { background: rgba(59, 130, 246, 0.05); }
        .version-card-btn.delete:hover { border-color: var(--error-color); color: var(--error-color); }
        .version-card-btn svg { width: 12px; height: 12px; }

        .editor-top-bar {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
            border-bottom: 1px solid var(--border-color);
            flex-shrink: 0;
            margin-top: 8px;
        }
        .editor-top-left { display: flex; align-items: center; gap: 1px; }
        .editor-top-right { display: flex; align-items: center; gap: 1px; }

        .editor-btn {
            background: transparent;
            border: none;
            color: var(--text-secondary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 8px;
            border-radius: 8px;
            transition: 0.2s;
            font-size: 14px;
            font-weight: 500;
            gap: 6px;
        }
        .editor-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .editor-btn svg { width: 18px; height: 18px; }

        .editor-main {
            flex: 1;
            display: flex;
            overflow: hidden;
            position: relative;
        }
        .editor-pane {
            width: 50%; /* Initial width */
            display: flex;
            flex-direction: column;
            position: relative;
            min-width: 100px;
            transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .resizer {
            width: 16px;
            margin: 0 -8px;
            cursor: col-resize;
            z-index: 10;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .resizer::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 1px;
            background: var(--border-color);
            transform: translateX(-50%);
            transition: all 0.2s;
        }
        .resizer:hover::before, .resizer.dragging::before {
            background: var(--primary-color);
            width: 2px;
        }
        .resizer-handle {
            width: 12px;
            height: 24px;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 4px;
            z-index: 11;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            transition: all 0.2s;
        }
        .resizer:hover .resizer-handle {
            border-color: var(--primary-color);
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        .resizer-handle span {
            width: 2px;
            height: 2px;
            background: var(--text-tertiary);
            border-radius: 50%;
        }
        .editor-textarea {
            flex: 1;
            width: 100%;
            padding: 24px;
            background: #f6f8fa;
            color: #24292e;
            border: none;
            font-family: 'Fira Code', Consolas, Monaco, monospace;
            font-size: 16px;
            line-height: 26px;
            resize: none;
            outline: none;
        }
        :root[data-theme="dark"] .editor-textarea {
            background: #0d1117 !important;
            color: #c9d1d9 !important;
            -webkit-text-fill-color: #c9d1d9 !important;
            caret-color: #fff;
        }
        :root[data-theme="dark"] .editor-highlight {
            background: #0d1117;
        }
        :root[data-theme="dark"] .line-numbers {
            background: #0d1117;
            border-right: 1px solid #30363d;
            color: #6e7681;
        }
        :root[data-theme="dark"] .editor-container {
            background: #0d1117;
        }
        .preview-pane {
            flex: 1;
            background: transparent; /* Remove hardcoded black */
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            min-width: 100px;
        }
        .preview-pane iframe {
            width: 100%;
            height: 100%;
            border: none;
            background: #000;
        }
        .markdown-body .code-wrapper pre { background: transparent !important; margin: 0; padding: 16px 20px; border: none; overflow-x: auto; }
        
        .markdown-body .code-wrapper pre::-webkit-scrollbar { height: 4px; width: 4px; }
        .markdown-body .code-wrapper pre::-webkit-scrollbar-track { background: transparent; }
        .markdown-body .code-wrapper pre::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, 0.1); border-radius: 10px; }
        :root[data-theme="dark"] .markdown-body .code-wrapper pre::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.1); }
        .markdown-body .code-wrapper pre::-webkit-scrollbar-thumb:hover { background: rgba(0, 0, 0, 0.2); }
        :root[data-theme="dark"] .markdown-body .code-wrapper pre::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.2); }

        .markdown-body .code-wrapper code { 
            background: transparent !important; 
            padding: 0; 
            font-family: 'Fira Code', Consolas, Monaco, monospace; 
            font-size: 14px; 
            line-height: 1.6;
            color: #d1d5db !important; /* Force a readable light-gray for dark mode / base */
        }
        :root[data-theme="dark"] .markdown-body .code-wrapper code { color: #e5e7eb !important; }
        :root:not([data-theme="dark"]) .markdown-body .code-wrapper code { color: #1f2937 !important; }
        
        /* Ensure syntax tags override the base color */
        .hljs-keyword, .hljs-operator, .hljs-string, .hljs-comment, .hljs-title, .hljs-built_in, .hljs-number { color: inherit; } /* Reset inherit to allow theme to work */
        .hljs-keyword { color: #ff7b72 !important; }
        :root:not([data-theme="dark"]) .hljs-keyword { color: #d73a49 !important; }
        .hljs-string { color: #a5d6ff !important; }
        :root:not([data-theme="dark"]) .hljs-string { color: #032f62 !important; }

        /* GitHub Style Syntax Highlighting */
        .hljs-keyword, .hljs-selector-tag, .hljs-operator { color: #cf222e; font-weight: 600; }
        .hljs-built_in, .hljs-type { color: #0550ae; }
        .hljs-string, .hljs-regexp { color: #0a3069; }
        .hljs-title, .hljs-section { color: #8250df; }
        .hljs-variable, .hljs-template-variable, .hljs-name, .hljs-attr { color: #953800; }
        .hljs-comment, .hljs-quote { color: #6e7781; font-style: italic; }
        .hljs-addition { color: #116329; background-color: #dafbe1; display: inline-block; width: 100%; padding: 0 4px; margin: 0 -4px; }
        .hljs-deletion { color: #82071e; background-color: #ffebe9; display: inline-block; width: 100%; padding: 0 4px; margin: 0 -4px; }
        .hljs-number, .hljs-literal { color: #0550ae; }

        :root[data-theme="dark"] .hljs-keyword, :root[data-theme="dark"] .hljs-selector-tag, :root[data-theme="dark"] .hljs-operator { color: #ff7b72; }
        :root[data-theme="dark"] .hljs-built_in, :root[data-theme="dark"] .hljs-type { color: #ffa657; }
        :root[data-theme="dark"] .hljs-string, :root[data-theme="dark"] .hljs-regexp { color: #a5d6ff; }
        :root[data-theme="dark"] .hljs-title, :root[data-theme="dark"] .hljs-section { color: #d2a8ff; }
        :root[data-theme="dark"] .hljs-variable, :root[data-theme="dark"] .hljs-template-variable, :root[data-theme="dark"] .hljs-name, :root[data-theme="dark"] .hljs-attr { color: #79c0ff; }
        :root[data-theme="dark"] .hljs-comment, :root[data-theme="dark"] .hljs-quote { color: #8b949e; }
        :root[data-theme="dark"] .hljs-addition { color: #3fb950; background-color: rgba(46, 160, 67, 0.15); display: inline-block; width: 100%; padding: 0 4px; margin: 0 -4px; }
        :root[data-theme="dark"] .hljs-deletion { color: #f85149; background-color: rgba(248, 81, 73, 0.15); display: inline-block; width: 100%; padding: 0 4px; margin: 0 -4px; }
        :root[data-theme="dark"] .hljs-number, :root[data-theme="dark"] .hljs-literal { color: #79c0ff; }
        .hljs-symbol, .hljs-bullet, .hljs-link { color: #d69d85; }

        :root:not([data-theme="dark"]) .editor-highlight code.hljs { color: inherit; }
        :root:not([data-theme="dark"]) .hljs-comment { color: #666 !important; }
        :root:not([data-theme="dark"]) .hljs-keyword { color: #d73a49 !important; }
        :root:not([data-theme="dark"]) .hljs-string { color: #032f62 !important; }

        /* 常驻操作栏 */
        .action-bar { display: flex; gap: 4px; margin-top: 8px; margin-bottom: 4px; opacity: 1 !important; visibility: visible !important; justify-content: flex-start; flex-wrap: wrap; }
        .action-btn { display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; border: none; background: transparent; border-radius: 6px; cursor: pointer; color: var(--text-tertiary); transition: all 0.2s; padding: 6px; }
        .action-btn:hover { background: var(--hover-bg); color: var(--primary-color); transform: translateY(-1px); }
        .action-btn svg { width: 18px; height: 18px; stroke: currentColor; fill: none; }
        .action-btn.copy-success { color: var(--primary-color); }
        .action-btn.like-btn:hover, .action-btn.like-btn.active { color: var(--primary-color); }
        .action-btn.dislike-btn:hover, .action-btn.dislike-btn.active { color: var(--primary-color); }
        .action-btn.share-btn:hover { color: var(--primary-color); }
        .action-btn.delete-msg-btn:hover { color: var(--primary-color); }
        .action-btn.edit-btn:hover { color: var(--primary-color); }
        .action-btn.play-btn:hover { color: var(--primary-color); }
        .action-btn.create-app-btn { color: var(--text-tertiary); }
        .action-btn.create-app-btn:hover { background: var(--hover-bg); color: var(--primary-color); }
        .action-btn.play-btn.speaking { color: var(--primary-color); animation: ttsPulse 1.5s infinite; }
        .action-btn.tts-btn.active { color: var(--primary-color); animation: ttsPulse 1.5s infinite; }
        @keyframes ttsPulse { 0% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.1); opacity: 0.7; } 100% { transform: scale(1); opacity: 1; } }

        /* File Card Styling */
        .file-card {
            display: flex;
            align-items: center;
            background: var(--bg-sidebar);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 8px 12px;
            min-width: 180px;
            max-width: 260px;
            gap: 12px;
            position: relative;
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: 0 1px 2px rgba(0,0,0,0.02);
            margin-bottom: 4px;
        }
        .file-card:hover {
            border-color: var(--primary-color);
            background: var(--hover-bg);
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            transform: translateY(-1px);
        }
        .file-card .file-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(92, 92, 230, 0.08);
            color: var(--primary-color);
            border-radius: 8px;
            flex-shrink: 0;
        }
        .file-card .file-info {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .file-card .file-name {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .file-card .file-size {
            font-size: 11px;
            color: var(--text-tertiary);
        }
        .file-card .remove-file-btn {
            position: absolute;
            top: -6px;
            right: -6px;
            width: 20px;
            height: 20px;
            background: #ff4d4f;
            color: #fff;
            border: none;
            border-radius: 50%;
            display: none;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 12px;
            box-shadow: 0 2px 6px rgba(255, 77, 79, 0.3);
            z-index: 5;
            transition: 0.2s;
        }
        .file-card:hover .remove-file-btn {
            display: flex;
        }
        .file-card .remove-file-btn:hover {
            background: #ff7875;
            transform: scale(1.1);
        }

        .user-row .action-bar { margin-top: 6px; background: transparent; padding: 0; box-shadow: none; border: none; justify-content: flex-end; width: 100%; opacity: 0 !important; visibility: hidden !important; transition: opacity 0.2s, visibility 0.2s; }
        .user-row:hover .action-bar { opacity: 1 !important; visibility: visible !important; }

        .suggestions-container { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; margin-bottom: 8px; animation: fadeIn 0.5s ease; }
        .suggestion-btn { background-color: var(--user-bubble); color: var(--text-primary); border: none; border-radius: 20px; padding: 8px 16px; font-size: 15px; cursor: pointer; transition: all 0.2s; white-space: nowrap; max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
        .suggestion-btn:hover { background: var(--hover-bg); transform: translateY(-1px); }

        /* 断网全局重试专属气泡提示层（Toast） */
        #toast-message {
            position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
            background: rgba(0, 0, 0, 0.75); color: #fff; padding: 10px 20px;
            border-radius: 24px; font-size: 14px; z-index: 50000;
            display: none; opacity: 0; pointer-events: none;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15); font-weight: 500;
            transition: opacity 0.3s ease;
        }
        #toast-message.show { display: block; opacity: 1; }

        .error-message { color: var(--error-color); padding: 16px; background-color: rgba(239, 68, 68, 0.1); border-radius: 8px; margin: 8px 0; font-size: 14.5px; line-height: 1.6; }

        /* ----- 输入区 ----- */
        /* Coder mode refinements */
        body.coder-mode .disclaimer-text { display: none !important; }
        body.coder-mode .agent-selector { display: none !important; }
        
        .input-panel { padding: 8px 12px 12px; padding-bottom: calc(12px + var(--sab)); display: flex; flex-direction: column; align-items: center; width: 100%; flex-shrink: 0; transition: margin 0.3s; }

        /* 页面上下文工具栏（豆包风格） */
        .context-toolbar {
            display: none; width: 100%; max-width: 760px;
            padding: 0 0 8px 0; gap: 6px;
            flex-wrap: wrap; align-items: center;
        }
        .context-toolbar.active { display: flex; }
        .context-toolbar .ctx-btn {
            display: inline-flex; align-items: center; gap: 5px;
            padding: 6px 14px; border-radius: 18px;
            border: 1px solid var(--border-color); background: var(--bg-main);
            color: var(--text-secondary); font-size: 13px; font-weight: 500;
            cursor: pointer; transition: all 0.2s; white-space: nowrap;
        }
        .context-toolbar .ctx-btn:hover {
            border-color: var(--primary-color); color: var(--primary-color);
            background: rgba(92, 92, 230, 0.05);
        }
        .context-toolbar .ctx-btn svg { width: 15px; height: 15px; flex-shrink: 0; }
        .context-toolbar .ctx-divider {
            width: 1px; height: 20px; background: var(--border-color); margin: 0 2px;
        }

        /* 文件引用卡片 */
        .file-ref-cards { display: none; flex-wrap: wrap; gap: 6px; padding: 0 12px 6px; max-width: 800px; width: 100%; }
        .file-ref-cards.has-cards { display: flex; }
        .file-ref-card { display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; background: var(--hover-bg); border: 1px solid var(--border-color); border-radius: 8px; font-size: 12px; color: var(--text-primary); max-width: 200px; cursor: pointer; transition: all 0.2s; animation: fileRefCardIn 0.2s ease; }
        .file-ref-card:hover { border-color: var(--accent, #6366f1); background: rgba(99, 102, 241, 0.08); }
        .file-ref-card .file-ref-icon { width: 14px; height: 14px; flex-shrink: 0; }
        .file-ref-card .file-ref-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
        .file-ref-card .file-ref-close { width: 16px; height: 16px; display: flex; align-items: center; justify-content: center; border-radius: 50%; cursor: pointer; color: var(--text-tertiary); flex-shrink: 0; transition: all 0.15s; font-size: 14px; line-height: 1; }
        .file-ref-card .file-ref-close:hover { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
        .file-ref-card .file-ref-size { color: var(--text-tertiary); font-size: 11px; flex-shrink: 0; }
        @keyframes fileRefCardIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
        @keyframes agentPulse { 0%,100% { box-shadow: none; } 50% { box-shadow: 0 0 0 4px rgba(16, 163, 127, 0.3); } }

        .input-box-wrapper { 
            width: 100%; max-width: 760px; background-color: var(--input-bg, #fff); 
            border-radius: 26px; display: flex; flex-direction: column; 
            border: 1px solid var(--border-color); box-shadow: 0 4px 14px rgba(0,0,0,0.05); 
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1); padding: 4px 12px; 
        }
        .input-box-wrapper:focus-within { 
            border-color: var(--border-focus, #ccc); 
            box-shadow: var(--input-shadow, 0 8px 36px rgba(0,0,0,0.10)); 
        }

        .scroll-btn {
            position: absolute;
            bottom: calc(100% + 12px);
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 100;
            color: var(--text-tertiary);
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
        }
        .scroll-btn.visible {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
        }
        .scroll-btn svg {
            width: 16px;
            height: 16px;
            transition: transform 0.3s ease;
        }
        .scroll-btn.to-top svg {
            transform: rotate(180deg);
        }
        
        .disclaimer-text { font-size: 12px; color: var(--text-tertiary); text-align: center; margin-top: 8px; user-select: none; width: 100%; max-width: 800px; }

        .upload-preview-area { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 4px; }
        .upload-preview-item { position: relative; width: 56px; height: 56px; border-radius: 8px; background-size: cover; background-position: center; border: 1px solid var(--border-color); }
        .remove-img-btn { position: absolute; top: -6px; right: -6px; background: rgba(0,0,0,0.7); color: white; border: none; border-radius: 50%; width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; cursor: pointer; font-size: 14px; }
        
        #message-input { width: 100%; background: transparent; border: none; color: var(--text-primary); font-size: 15px; resize: none; outline: none; line-height: 1.5; padding: 10px 0; min-height: 24px; max-height: 200px; overflow-y: auto; scrollbar-width: none; }
        #message-input::-webkit-scrollbar { display: none; }
        #message-input::placeholder { color: var(--text-tertiary); }
        #message-input.drag-over {
            background-color: var(--hover-bg);
            border: 2px dashed var(--primary-color) !important;
            transform: scale(1.005);
            transition: all 0.2s ease;
        }
        
        .input-tools-row { display: flex; justify-content: space-between; align-items: center; width: 100%; margin-top: 0px; }
        .input-tools-left { display: flex; align-items: center; gap: 4px; }
        .input-tools-right { display: flex; align-items: center; gap: 8px; }
        .attach-btn { background: transparent; border: none; color: var(--text-tertiary); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: 0.2s; padding: 2px; border-radius: 6px; }
        .attach-btn svg { width: 18px; height: 18px; stroke: currentColor; }
        
        .agent-toggle-btn { background: var(--hover-bg); border: none; color: var(--text-tertiary); padding: 2px 8px; border-radius: 12px; font-size: 12px; font-weight: 500; cursor: pointer; display: flex; align-items: center; gap: 4px; transition: all 0.2s; }
        .agent-toggle-btn svg { width: 14px; height: 14px; }
        .agent-toggle-btn.active { background: rgba(59, 130, 246, 0.1) !important; color: var(--primary-color) !important; }
        
        .mic-btn svg { width: 18px; height: 18px; }

        .think-switch-btn, .search-switch-btn, .font-switch-btn, .review-guard-btn {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }
        .think-switch-btn.active, .search-switch-btn.active, .font-switch-btn.active, .review-guard-btn.active {
            background: rgba(59, 130, 246, 0.1) !important;
            color: var(--primary-color) !important;
        }
        
        .think-switch-btn .think-text, .search-switch-btn .search-text { display: none !important; }

        .counter-row { display: flex; align-items: baseline; white-space: nowrap; gap: 4px; }
        .input-counter { font-size: 12px; color: var(--text-tertiary); margin: 0; padding: 0; }
        .input-counter.warning { color: var(--warning-color); }
        .input-counter.danger { color: var(--error-color); }

        .input-tools-right { display: flex; align-items: center; gap: 12px; }
        
        .mic-btn-wrapper { position: relative; }
        .mic-menu {
            position: absolute; bottom: calc(100% + 16px); right: -10px;
            background: var(--bg-main); border: 1px solid var(--border-color);
            border-radius: 16px; box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            padding: 8px 0; display: none; flex-direction: column; min-width: 140px;
            z-index: 100;
        }
        .mic-menu.show { display: flex; animation: fadeIn 0.2s ease; }
        .mic-menu-item {
            display: flex; align-items: center; gap: 12px; padding: 12px 20px;
            cursor: pointer; color: var(--text-primary); font-size: 14px;
            transition: background 0.2s;
        }
        .mic-menu-item:hover { background: var(--hover-bg); }
        .mic-menu-item:first-child { }
        .mic-menu-item svg { width: 18px; height: 18px; color: var(--text-secondary); }

        .send-btn { 
            width: 40px; height: 40px; border-radius: 50%; display: flex; 
            align-items: center; justify-content: center; cursor: pointer; border: none; 
            background: linear-gradient(135deg, #a855f7 0%, #3b82f6 100%); 
            color: #fff; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            transform: translateY(-5px); /* 上移 5px */
        }
        .send-btn:hover { transform: translateY(-5px) scale(1.1); }
        .send-btn:active { transform: translateY(-5px) scale(0.95); }
        .send-btn:disabled { 
            cursor: not-allowed;
        }
        .send-btn svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
        
        .send-btn.stop-btn { 
            background: var(--primary-color) !important;
        }
        .send-btn.typing {
            background: var(--border-focus); /* Grayish color like in Image 2 */
        }
        .send-btn.typing:hover {
            background: var(--primary-color); /* Turns primary color on hover */
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .sidebar-logo img {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            object-fit: cover;
        }

        .sidebar-search-container { margin-bottom: 4px; }
        .search-input-wrapper { 
            display: flex; align-items: center; gap: 8px; padding: 8px 12px; 
            background: var(--hover-bg); border-radius: 10px; margin: 0 4px;
            border: 1px solid var(--border-color);
            animation: slideIn 0.2s ease;
        }
        @keyframes slideIn {
            from { opacity: 0; transform: translateY(-5px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .search-input-wrapper input { 
            flex: 1; background: transparent; border: none; color: var(--text-primary); 
            font-size: 14px; outline: none; width: 100%;
        }
        .search-icon-small { width: 16px; height: 16px; color: var(--text-tertiary); flex-shrink: 0; }
        .clear-search-btn { 
            background: transparent; border: none; color: var(--text-tertiary); 
            cursor: pointer; display: flex; align-items: center; justify-content: center;
            padding: 2px; border-radius: 4px;
        }
        .clear-search-btn:hover { background: var(--border-color); color: var(--text-primary); }
        .clear-search-btn svg { width: 14px; height: 14px; }

        .search-highlight { background-color: rgba(59, 130, 246, 0.2); color: var(--primary-color); border-radius: 2px; padding: 0 2px; }
        .search-snippet { font-size: 11px; color: var(--text-tertiary); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

        .search-results { max-height: 300px; overflow-y: auto; margin-top: 16px; display: flex; flex-direction: column; gap: 4px; }
        .search-result-item { 
            padding: 10px 12px; border-radius: 10px; cursor: pointer; transition: 0.2s; 
            display: flex; flex-direction: column; gap: 4px; border: 1px solid transparent;
        }
        .search-result-item:hover { background: var(--hover-bg); border-color: var(--border-color); }
        .search-result-title { font-size: 14px; font-weight: 600; color: var(--text-primary); }
        .search-result-preview { font-size: 12px; color: var(--text-tertiary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .no-results { text-align: center; padding: 20px; color: var(--text-tertiary); font-size: 14px; }

        /* ================= 现代化弹窗统一样式 (ChatGPT 风格) ================= */
        .modal-overlay { 
            display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); 
            z-index: 30000; align-items: center; justify-content: center; 
            opacity: 0; backdrop-filter: blur(3px); transition: opacity 0.3s ease; 
        }
        .modal-overlay.active { display: flex; opacity: 1; }
        
        .modal-content { 
            background: var(--bg-main); width: 90%; max-width: 400px; 
            border-radius: 16px; padding: 32px; box-shadow: 0 20px 40px rgba(0,0,0,0.15); 
            transform: scale(0.95) translateY(10px); 
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1); position: relative; 
        }
        .modal-overlay.active .modal-content { transform: scale(1) translateY(0); }
        
        .modal-header { display: flex; justify-content: center; align-items: center; margin-bottom: 24px; position: relative; }
        .modal-header h3 { margin: 0; font-size: 24px; color: var(--text-primary); font-weight: 600; text-align: center; }
        .close-modal-btn { 
            position: absolute; right: -8px; top: -8px; background: transparent; 
            border: none; color: var(--text-secondary); cursor: pointer; 
            display: flex; align-items: center; justify-content: center; 
            padding: 4px; border-radius: 50%; width: 32px; height: 32px; transition: 0.2s; 
        }
        .close-modal-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        
        .form-group { margin-bottom: 20px; display: flex; flex-direction: column; gap: 8px; }
        .form-group label { font-size: 13px; color: var(--text-secondary); font-weight: 500; }
        .form-group input { 
            width: 100%; box-sizing: border-box;
            padding: 14px 16px; border: 1px solid var(--border-color); border-radius: 12px; 
            background: var(--input-bg); color: var(--text-primary); outline: none; 
            font-size: 15px; transition: border-color 0.2s, box-shadow 0.2s; 
        }
        .form-group input:focus { border-color: var(--success-color); box-shadow: 0 0 0 2px rgba(16, 163, 127, 0.2); }
        .form-group input::placeholder { color: var(--text-tertiary); }
        
        .captcha-row { display: flex; gap: 12px; align-items: stretch; }
        .captcha-row input { flex: 1; min-width: 0; }
        .captcha-row img { height: 48px; border-radius: 12px; cursor: pointer; border: 1px solid var(--border-color); object-fit: cover; }
        
        /* 弹窗中的全宽主操作按钮 */
        .btn-submit-full { 
            width: 100%; padding: 14px; border-radius: 12px; border: none; 
            background: var(--success-color); color: #fff; font-size: 16px; 
            font-weight: 600; cursor: pointer; transition: all 0.2s; margin-top: 8px; 
        }
        .btn-submit-full:hover { background: #000000; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(141, 141, 141, 0.2); }
        .btn-submit-full:active { transform: translateY(0); }
        .quick-login-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: 0.2s;
        }
        .quick-login-btn:hover {
            background: var(--hover-bg);
            border-color: var(--primary-color);
            color: var(--primary-color);
        }
        /* 我的应用 - Kimi 风格网格 */
        .my-apps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 16px;
        }
        .my-app-card {
            background: var(--bg-sidebar);
            border: 1px solid var(--border-color);
            border-radius: 14px;
            overflow: hidden;
            cursor: pointer;
            transition: 0.2s;
            position: relative;
        }
        .my-app-card:hover {
            border-color: var(--primary-color);
            box-shadow: 0 4px 16px rgba(0,0,0,0.08);
            transform: translateY(-2px);
        }
        .my-app-thumb {
            width: 100%;
            height: 140px;
            background: #fff;
            overflow: hidden;
            position: relative;
        }
        .my-app-thumb iframe {
            width: 1280px;
            height: 800px;
            border: none;
            transform: scale(0.18);
            transform-origin: top left;
            pointer-events: none;
            position: absolute;
            top: 0;
            left: 0;
        }
        .my-app-thumb-fallback {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 36px;
            background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 100%);
        }
        .my-app-info {
            padding: 12px 14px;
        }
        .my-app-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 4px;
        }
        .my-app-meta {
            font-size: 11px;
            color: var(--text-tertiary);
        }
        .my-app-card-actions {
            position: absolute;
            top: 8px;
            right: 8px;
            display: flex;
            gap: 4px;
            opacity: 0;
            transition: 0.15s;
        }
        .my-app-card:hover .my-app-card-actions { opacity: 1; }
        .my-app-action-btn {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            border: none;
            background: rgba(255,255,255,0.9);
            backdrop-filter: blur(4px);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: 0.15s;
        }
        .my-app-action-btn:hover { background: #fff; color: var(--text-primary); }
        .my-app-action-btn.danger:hover { color: var(--error-color); }
        .my-app-action-btn svg { width: 14px; height: 14px; }

        /* ==================== 应用页面 ==================== */
        .app-page {
            display: none;
            flex-direction: column;
            height: 100%;
            overflow: hidden;
        }
        .app-page.active {
            display: flex;
        }
        .app-page-header {
            padding: 20px 24px 0;
            flex-shrink: 0;
            text-align: center;
        }
        .app-page-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 14px;
        }
        .app-page-search-row {
            display: flex;
            gap: 8px;
            margin-bottom: 14px;
            justify-content: center;
        }
        .app-page-search {
            position: relative;
            flex: 1;
            max-width: 420px;
        }
        .app-page-search input {
            width: 100%;
            padding: 11px 44px 11px 18px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
            background: var(--bg-sidebar);
            color: var(--text-primary);
            font-size: 14px;
            outline: none;
            transition: border-color 0.2s;
            box-sizing: border-box;
        }
        .app-page-search input:focus {
            border-color: var(--primary-color);
        }
        .app-page-search input::placeholder {
            color: var(--text-tertiary);
        }
        .app-search-icon-btn {
            position: absolute;
            right: 6px;
            top: 50%;
            transform: translateY(-50%);
            width: 30px;
            height: 30px;
            aspect-ratio: 1;
            border-radius: 50%;
            border: none;
            background: var(--text-primary);
            color: var(--bg-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: opacity 0.15s;
            flex-shrink: 0;
        }
        .app-search-icon-btn:hover { opacity: 0.8; }
        .app-tabs {
            display: flex;
            gap: 0;
            justify-content: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            flex-shrink: 0;
        }
        .app-tabs::-webkit-scrollbar { display: none; }
        .app-tab {
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-tertiary);
            background: transparent;
            border: none;
            border-bottom: 2px solid transparent;
            cursor: pointer;
            transition: 0.2s;
            margin-bottom: -1px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .app-tab:hover { color: var(--text-primary); }
        .app-tab.active {
            color: var(--primary-color);
            border-bottom-color: var(--primary-color);
        }
        .app-page-content {
            flex: 1;
            overflow-y: auto;
            padding: 20px 24px;
        }
        .app-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .app-card {
            background: rgba(128, 128, 128, 0.06);
            border: none;
            border-radius: 12px;
            overflow: hidden;
            cursor: pointer;
            transition: 0.2s;
            position: relative;
        }
        .app-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        }
        .app-card-thumb {
            width: 100%;
            aspect-ratio: 16 / 9;
            background: #f8f9fa;
            overflow: hidden;
            position: relative;
        }
        .app-card-thumb iframe {
            width: 640px;
            height: 360px;
            border: none;
            transform: scale(0.5);
            transform-origin: top left;
            pointer-events: none;
            position: absolute;
            top: 0;
            left: 0;
        }
        .app-card-thumb-fallback {
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 36px;
            color: var(--text-tertiary);
            background: var(--hover-bg);
        }
        .app-card-body {
            padding: 8px 10px;
            background: rgba(128, 128, 128, 0.06);
        }
        .app-card-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
        }
        .app-card-name-text {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            min-width: 0;
        }
        .app-card-date {
            font-size: 10px;
            color: var(--text-tertiary);
            flex-shrink: 0;
        }
        .app-card-actions-bar {
            position: absolute;
            top: 8px;
            right: 8px;
            display: flex;
            gap: 4px;
            opacity: 0;
            transition: 0.15s;
        }
        .app-card:hover .app-card-actions-bar { opacity: 1; }
        .app-action-btn {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            border: none;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(4px);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: 0.15s;
            padding: 0;
        }
        .app-action-btn:hover {
            background: #fff;
            color: var(--primary-color);
        }
        .app-action-btn.danger:hover {
            color: var(--error-color);
        }
        .app-published-badge {
            display: inline-block;
            font-size: 9px;
            padding: 1px 5px;
            border-radius: 4px;
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
            font-weight: 500;
            margin-left: 4px;
        }
        .app-empty-hint {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-tertiary);
            font-size: 14px;
            grid-column: 1 / -1;
        }
        .app-empty-hint svg {
            display: block;
            margin: 0 auto 10px;
            opacity: 0.4;
        }

        /* 技能卡片 */
        .skill-card {
            background: rgba(59, 130, 246, 0.04);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 16px;
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            flex-direction: column;
            gap: 8px;
            position: relative;
        }
        .skill-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(0,0,0,0.1);
            border-color: var(--primary-color);
        }
        .skill-card-header {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .skill-card-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: flex-start;
            border-radius: 10px;
            flex-shrink: 0;
            background: rgba(92, 92, 230, 0.1);
            color: #5c5ce6;
        }
        .skill-card-icon.system {
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
        }
        .skill-card-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .skill-card-desc {
            font-size: 12px;
            color: var(--text-secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 36px;
        }
        .skill-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto;
            padding-top: 8px;
            border-top: 1px solid var(--border-color);
        }
        .skill-card-source {
            font-size: 10px;
            padding: 2px 8px;
            border-radius: 10px;
            font-weight: 500;
        }
        .skill-card-source.user {
            background: rgba(92, 92, 230, 0.1);
            color: #5c5ce6;
        }
        .skill-card-source.global {
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
        }
        .skill-card-files {
            font-size: 11px;
            color: var(--text-tertiary);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .skill-card-actions {
            display: flex;
            gap: 4px;
        }
        .skill-action-btn {
            padding: 4px 10px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
            background: transparent;
            cursor: pointer;
            color: var(--text-tertiary);
            transition: 0.15s;
            font-size: 11px;
        }
        .skill-action-btn:hover {
            background: var(--hover-bg);
            color: var(--text-primary);
        }
        .skill-action-btn.danger:hover {
            color: var(--error-color);
            border-color: var(--error-color);
        }
        .skill-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 12px;
        }
        .skill-detail-modal {
            position: fixed;
            inset: 0;
            z-index: 10000;
            display: none;
            align-items: center;
            justify-content: center;
            background: rgba(0,0,0,0.5);
            backdrop-filter: blur(4px);
        }
        .skill-detail-modal.active { display: flex; }
        .skill-detail-content {
            background: var(--bg-main);
            border-radius: 16px;
            width: 90vw;
            max-width: 600px;
            max-height: 80vh;
            overflow: hidden;
            padding: 24px;
            display: flex;
            flex-direction: column;
        }
        .skill-detail-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .skill-detail-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        .skill-detail-body {
            font-size: 14px;
            line-height: 1.6;
            color: var(--text-primary);
            white-space: pre-wrap;
        }
        .skill-detail-files {
            margin-top: 16px;
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }
        .skill-detail-file {
            padding: 8px 12px;
            background: var(--hover-bg);
            border-radius: 8px;
            margin-bottom: 4px;
            font-size: 13px;
            font-family: monospace;
        }

        /* 技能创建弹窗 */
        .skill-create-modal {
            position: fixed; inset: 0; z-index: 10001;
            display: none; align-items: center; justify-content: center;
            background: rgba(0,0,0,0.5);
        }
        .skill-create-modal.active { display: flex; }
        .skill-create-content {
            background: var(--bg-main); border-radius: 16px;
            width: 90vw; max-width: 680px; max-height: 85vh;
            overflow-y: auto; padding: 28px;
        }
        .skill-create-title { font-size: 20px; font-weight: 700; margin-bottom: 20px; }
        .skill-create-group { margin-bottom: 16px; }
        .skill-create-label { font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; display: block; }
        .skill-create-input, .skill-create-textarea {
            width: 100%; padding: 12px 14px; border-radius: 10px;
            border: 1px solid var(--border-color); background: var(--bg-primary);
            color: var(--text-primary); font-size: 14px; font-family: inherit;
            transition: border-color 0.2s; box-sizing: border-box;
        }
        .skill-create-input:focus, .skill-create-textarea:focus {
            outline: none; border-color: var(--primary-color, #5c5ce6);
        }
        .skill-create-textarea { resize: vertical; min-height: 80px; line-height: 1.6; }
        .skill-create-body { min-height: 200px; font-family: monospace; font-size: 13px; }
        .skill-create-actions { display: flex; gap: 10px; margin-top: 20px; justify-content: flex-end; }
        .skill-create-btn {
            padding: 10px 20px; border-radius: 10px; font-size: 14px; font-weight: 600;
            cursor: pointer; transition: 0.2s; border: 1px solid var(--border-color);
            background: transparent; color: var(--text-primary);
        }
        .skill-create-btn:hover { background: var(--hover-bg); }
        .skill-create-btn.primary {
            background: var(--primary-color, #5c5ce6); color: #fff; border-color: transparent;
        }
        .skill-create-btn.primary:hover { opacity: 0.9; }
        .skill-create-btn.ai-btn {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #fff; border-color: transparent;
            display: flex; align-items: center; gap: 6px;
        }
        .skill-create-btn.ai-btn:hover { opacity: 0.9; }
        .skill-create-btn.ai-btn:disabled { opacity: 0.5; cursor: not-allowed; }
        .skill-create-hint { font-size: 12px; color: var(--text-tertiary); margin-top: 6px; }

        /* 模式提示卡片 */
        .mode-tips-message { animation: fadeInUp 0.25s ease; }
        .mode-tips-card {
            background: transparent;
            border: none;
            border-radius: 0;
            padding: 8px 0;
            max-width: 100%;
        }
        .mode-tips-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .mode-tips-desc {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 10px;
        }
        .mode-tips-label {
            font-size: 12px;
            color: var(--text-tertiary);
            margin-bottom: 6px;
            font-weight: 500;
        }
        .mode-tips-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mode-tip-example {
            font-size: 13px;
            color: var(--primary-color);
            padding: 6px 10px;
            background: transparent;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.15s;
            border: none;
            text-align: left;
        }
        .mode-tip-example:hover {
            background: var(--hover-bg);
        }
        .modal-switch-text { text-align: center; margin-top: 24px; font-size: 14px; color: var(--text-secondary); }
        .modal-switch-text a { color: var(--success-color); text-decoration: none; font-weight: 500; transition: color 0.2s; }
        .modal-switch-text a:hover { text-decoration: underline; }

        /* ---------------- 顶部登录/退出按钮区域 ---------------- */
        .user-info-area { display: flex; align-items: center; gap: 12px; margin-right: 8px; }
        .username-display { font-size: 14px; font-weight: 600; color: var(--text-primary); max-width: 100px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .logout-btn-subtle { 
            background: transparent; border: 1px solid var(--border-color); color: var(--text-secondary); 
            height: 32px; padding: 0 16px; border-radius: 16px; font-size: 14px; 
            font-weight: 500; cursor: pointer; transition: all 0.2s ease; 
            display: flex; align-items: center; justify-content: center; 
        }
        .logout-btn-subtle:hover { border-color: var(--error-color); color: var(--error-color); background: rgba(239, 68, 68, 0.05); }

        /* 个人信息弹窗底部按钮复写 */
        #profile-modal .modal-footer { display: flex; justify-content: flex-end; gap: 12px; margin-top: 24px; }
        #profile-modal .modal-footer button { padding: 12px 24px; border-radius: 12px; border: none; cursor: pointer; font-size: 15px; font-weight: 500; transition: 0.2s; }
        #profile-modal .btn-cancel { background: var(--hover-bg); color: var(--text-primary); }
        #profile-modal .btn-cancel:hover { background: var(--border-color); }
        #profile-modal .btn-save { background: var(--success-color); color: #fff; }
        #profile-modal .btn-save:hover { background: #0d8c6b; }

        /* 任务中心样式 */
        #task-center-modal .modal-overlay,
        #task-center-modal.modal-overlay { background: var(--bg-main); backdrop-filter: none; }
        #task-center-modal .modal-content,
        #task-center-modal.modal-overlay .modal-content {
            width: 100%; max-width: 100%; height: 100vh; height: 100dvh; border-radius: 0; padding: 0;
            box-shadow: none; transform: none; display: flex; flex-direction: column;
            background: var(--bg-main); overflow: hidden;
        }
        #task-center-modal.modal-overlay.active .modal-content { transform: none; }
        .tc-header {
            display: flex; align-items: center; justify-content: space-between;
            padding: 16px 20px; border-bottom: 1px solid var(--border-color);
            background: var(--bg-sidebar); flex-shrink: 0;
        }
        .tc-header-left { display: flex; align-items: center; gap: 12px; }
        .tc-header h3 { margin: 0; font-size: 18px; font-weight: 600; color: var(--text-primary); }
        .tc-close-btn {
            width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border-color);
            background: transparent; color: var(--text-secondary); cursor: pointer;
            display: flex; align-items: center; justify-content: center; transition: 0.2s;
        }
        .tc-close-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .tc-tabs {
            display: flex; gap: 0; border-bottom: 1px solid var(--border-color);
            padding: 0 20px; background: var(--bg-sidebar); flex-shrink: 0;
            overflow-x: auto; -webkit-overflow-scrolling: touch;
        }
        .tc-tabs::-webkit-scrollbar { display: none; }
        .task-filter-btn {
            padding: 12px 18px; border: none; background: transparent; color: var(--text-secondary);
            cursor: pointer; font-size: 14px; border-bottom: 2px solid transparent;
            transition: 0.2s; white-space: nowrap; flex-shrink: 0;
        }
        .task-filter-btn:hover { color: var(--text-primary); }
        .task-filter-btn.active { color: var(--accent-color, #3b82f6); border-bottom-color: var(--accent-color, #3b82f6); font-weight: 500; }
        .task-filter-btn .filter-count {
            font-size: 11px; background: var(--border-color); color: var(--text-secondary);
            padding: 1px 6px; border-radius: 10px; margin-left: 4px;
        }
        .task-filter-btn.active .filter-count { background: rgba(59,130,246,0.15); color: var(--accent-color, #3b82f6); }
        .tc-body { flex: 1; overflow-y: auto; padding: 16px 20px; }
        .task-empty {
            display: flex; flex-direction: column; align-items: center; justify-content: center;
            padding: 60px 20px; color: var(--text-tertiary); gap: 12px;
        }
        .task-empty-icon { font-size: 48px; opacity: 0.5; }
        .task-empty-text { font-size: 14px; }
        .task-card {
            display: flex; align-items: center; gap: 14px; padding: 14px 16px;
            border: 1px solid var(--border-color); border-radius: 12px; margin-bottom: 10px;
            transition: 0.2s; background: var(--hover-bg);
        }
        .task-card:hover { border-color: var(--accent-color, #3b82f6); box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
        .task-card-icon {
            width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
            font-size: 18px; flex-shrink: 0;
        }
        .task-card-icon.video { background: rgba(168,85,247,0.12); }
        .task-card-icon.image { background: rgba(59,130,246,0.12); }
        .task-card-icon.deploy { background: rgba(16,185,129,0.12); }
        .task-card-icon.agent { background: rgba(245,158,11,0.12); }
        .task-card-icon.other { background: rgba(107,114,128,0.12); }
        .task-card-body { flex: 1; min-width: 0; }
        .task-card-title { font-size: 14px; font-weight: 500; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .task-card-meta { font-size: 12px; color: var(--text-tertiary); margin-top: 4px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
        .task-progress-bar { height: 4px; background: var(--border-color); border-radius: 2px; margin-top: 8px; overflow: hidden; }
        .task-progress-fill { height: 100%; background: var(--accent-color, #3b82f6); border-radius: 2px; transition: width 0.5s ease; }
        .task-progress-fill.failed { background: var(--error-color); }
        .task-card-actions { display: flex; gap: 4px; flex-shrink: 0; }
        .task-action-btn {
            width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--border-color);
            background: transparent; color: var(--text-secondary); cursor: pointer; display: flex;
            align-items: center; justify-content: center; transition: 0.2s;
        }
        .task-action-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .task-action-btn.danger:hover { background: rgba(239,68,68,0.08); color: var(--error-color); border-color: var(--error-color); }
        .task-status-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
        .task-status-dot.pending { background: var(--text-tertiary); }
        .task-status-dot.running { background: #f59e0b; animation: taskPulse 1.5s infinite; }
        .task-status-dot.completed { background: var(--accent-color, #3b82f6); }
        .task-status-dot.failed { background: var(--error-color); }
        .task-status-dot.cancelled { background: var(--text-tertiary); }
        @keyframes taskPulse { 0%,100% { opacity:1; } 50% { opacity:0.4; } }
        .tc-footer {
            display: flex; align-items: center; justify-content: space-between;
            padding: 12px 20px; border-top: 1px solid var(--border-color);
            background: var(--bg-sidebar); flex-shrink: 0;
        }
        .tc-footer-btn {
            padding: 8px 16px; border-radius: 8px; border: 1px solid var(--border-color);
            background: transparent; color: var(--text-secondary); cursor: pointer;
            font-size: 13px; transition: 0.2s;
        }
        .tc-footer-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .tc-footer-btn.primary {
            background: var(--accent-color, #3b82f6); color: #fff; border-color: transparent;
        }
        .tc-footer-btn.primary:hover { opacity: 0.9; }
        .user-menu-item { position: relative; }
        @media (max-width: 768px) {
            #task-center-modal .modal-content,
            #task-center-modal.modal-overlay .modal-content {
                width: 100vw !important; height: 100vh !important; max-width: 100vw !important;
                padding: 0 !important; border-radius: 0 !important;
            }
            .tc-header { padding: 12px 16px; }
            .tc-header h3 { font-size: 16px; }
            .tc-tabs { padding: 0 12px; }
            .task-filter-btn { padding: 10px 12px; font-size: 13px; }
            .tc-body { padding: 12px; }
            .task-card { padding: 12px; gap: 10px; }
            .task-card-icon { width: 36px; height: 36px; font-size: 16px; border-radius: 8px; }
            .task-card-title { font-size: 13px; }
            .task-card-meta { font-size: 11px; gap: 6px; }
            .task-action-btn { width: 28px; height: 28px; }
            .tc-footer { padding: 10px 12px; }
            .tc-footer-btn { padding: 6px 12px; font-size: 12px; }
        }
        @media (max-width: 480px) {
            #task-center-modal .modal-content,
            #task-center-modal.modal-overlay .modal-content {
                width: 100vw !important; height: 100vh !important; max-width: 100vw !important;
                padding: 0 !important; border-radius: 0 !important;
            }
            .tc-header { padding: 10px 12px; }
            .task-filter-btn { padding: 8px 10px; font-size: 12px; }
            .tc-body { padding: 8px; }
            .task-card { padding: 10px; gap: 8px; border-radius: 10px; }
            .task-card-icon { width: 32px; height: 32px; font-size: 14px; }
        }

        .sidebar-theme-btn { display: none; }
        /* ==================== 移动端专属样式深度定制 ==================== */
        /* ==================== 声音选择模态框 (Aliyun 风格) ==================== */
        .voice-selection-modal {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 3000;
            display: none;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .voice-selection-modal.active {
            display: flex;
            opacity: 1;
        }
        .voice-selection-content {
            background: #fff;
            width: 600px;
            max-width: 90vw;
            max-height: 85vh;
            border-radius: 24px;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0,0,0,0.15);
            animation: modalPopUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        @keyframes modalPopUp {
            from { transform: scale(0.95) translateY(20px); opacity: 0; }
            to { transform: scale(1) translateY(0); opacity: 1; }
        }
        .voice-selection-header {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid #f0f0f0;
        }
        .voice-selection-header h3 {
            font-size: 18px;
            font-weight: 600;
            color: #1c1c1e;
            margin: 0 auto;
        }
        .voice-selection-close {
            background: transparent;
            border: none;
            color: #8e8e93;
            cursor: pointer;
            padding: 4px;
            border-radius: 50%;
            transition: 0.2s;
            position: absolute;
            right: 20px;
        }
        .voice-selection-close:hover { background: #f2f2f7; color: #1c1c1e; }

        .voice-selection-search-bar {
            padding: 16px 24px;
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .voice-search-input-wrapper {
            flex: 1;
            position: relative;
            background: #f2f2f7;
            border-radius: 20px;
            display: flex;
            align-items: center;
            padding: 0 16px;
        }
        .voice-search-input-wrapper svg {
            width: 18px;
            height: 18px;
            color: #8e8e93;
            margin-right: 8px;
        }
        .voice-search-input {
            flex: 1;
            background: transparent;
            border: none;
            height: 40px;
            font-size: 15px;
            outline: none;
            color: #1c1c1e;
        }
        .voice-filter-btn {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 0 16px;
            height: 40px;
            background: #f2f2f7;
            border: none;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: #1c1c1e;
            cursor: pointer;
            transition: 0.2s;
        }
        .voice-filter-btn:hover { background: #e5e5ea; }

        .voice-list-container {
            flex: 1;
            overflow-y: auto;
            padding: 0 24px 20px;
        }
        .voice-item-avatar {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: #f2f2f7;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 16px;
            font-size: 20px;
            color: #5c5ce6;
            flex-shrink: 0;
            transition: 0.2s;
        }
        .voice-item.active .voice-item-avatar { background: #5c5ce6; color: #fff; }
        
        .voice-item {
            display: flex;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid #f0f0f0;
            cursor: pointer;
            transition: 0.2s;
            position: relative;
        }
        .voice-item:last-child { border-bottom: none; }
        .voice-item-info { flex: 1; min-width: 0; }
        .voice-item-name {
            font-size: 16px;
            font-weight: 600;
            color: #1c1c1e;
            margin-bottom: 4px;
        }
        .voice-item-desc {
            font-size: 13px;
            color: #8e8e93;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .voice-item-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-left: 16px;
        }
        .voice-preview-btn {
            display: flex; align-items: center; justify-content: center;
            width: 32px; height: 32px; border-radius: 8px;
            border: 1px solid var(--border-color); background: var(--bg-primary);
            color: var(--text-secondary); cursor: pointer; transition: all 0.2s;
            flex-shrink: 0;
        }
        .voice-preview-btn:hover { border-color: var(--primary-color, #5c5ce6); color: var(--primary-color, #5c5ce6); background: rgba(92,92,230,0.05); }
        .voice-preview-btn.playing { border-color: var(--primary-color, #5c5ce6); color: #fff; background: var(--primary-color, #5c5ce6); animation: ttsPulse 1.5s infinite; }
        .voice-preview-btn.playing .play-icon { display: none; }
        .voice-preview-btn.playing .stop-icon { display: block !important; }
        @keyframes ttsPulse {
            0% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.1); opacity: 0.8; }
            100% { transform: scale(1); opacity: 1; }
        }
        .voice-check-icon {
            width: 20px;
            height: 20px;
            color: #5c5ce6;
            display: none;
        }
        .voice-item.active .voice-check-icon { display: block; }
        .voice-item.active { background: rgba(92, 92, 230, 0.02); margin: 0 -24px; padding: 16px 24px; }

        .voice-selection-footer {
            padding: 20px 24px;
            display: flex;
            justify-content: flex-end;
            gap: 12px;
            border-top: 1px solid #f0f0f0;
        }
        .voice-footer-btn-cancel {
            padding: 0 24px;
            height: 40px;
            border-radius: 20px;
            border: 1px solid #e5e5ea;
            background: #fff;
            color: #1c1c1e;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: 0.2s;
        }
        .voice-footer-btn-cancel:hover { background: #f2f2f7; }
        .voice-footer-btn-confirm {
            padding: 0 24px;
            height: 40px;
            border-radius: 20px;
            border: none;
            background: #5c5ce6;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .voice-footer-btn-confirm:hover { opacity: 0.9; }
        /* Typing cursor animation */
        .markdown-body.streaming p:last-child::after,
        .markdown-body.streaming > :last-child::after {
            content: "";
            display: none;
        }
        @keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
        .markdown-body.streaming {
            animation: streamFadeIn 0.15s ease;
        }
        @keyframes streamFadeIn { from { opacity: 0.85; } to { opacity: 1; } }

        /* ==================== 专业写作助手 UI ==================== */
        .writer-tools-toolbar {
            display: none;
            position: absolute;
            bottom: calc(100% + 6px); /* 10px lower than previous 16px */
            left: 50%;
            transform: translateX(-50%);
            z-index: 1;
            background: rgba(255, 255, 255, 0.85);
            padding: 8px;
            border-radius: 20px;
            border: 1px solid rgba(0,0,0,0.06);
            box-shadow: none;
            width: max-content;
            backdrop-filter: blur(12px);
            gap: 8px;
        }
        .writer-tool-group {
            display: flex;
            gap: 8px;
            align-items: center;
            position: relative;
        }
        .writer-tool-btn {
            background: transparent;
            border: none;
            border-radius: 12px;
            padding: 6px 12px;
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: #333;
            cursor: pointer;
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: none;
        }
        .writer-tool-btn:hover {
            background: rgba(0,0,0,0.04);
            transform: translateY(-1px);
        }
        /* Dropdown Menus */
        .writer-dropdown-menu {
            display: none;
            position: absolute;
            bottom: calc(100% + 12px);
            left: 0;
            z-index: 1002;
            background: #fff;
            border: 1px solid rgba(0,0,0,0.08);
            border-radius: 12px;
            box-shadow: none;
            width: max-content;
            padding: 4px;
            flex-direction: column;
            gap: 2px;
            text-align: left;
        }
        .writer-dropdown-menu.active {
            display: flex;
        }
        .writer-dropdown-item {
            padding: 6px 14px;
            font-size: 12px;
            color: #333;
            border-radius: 8px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: background 0.2s;
            white-space: nowrap;
        }
        .writer-dropdown-item:hover {
            background: #f4f6f8;
            color: var(--primary-color);
        }
        .writer-dropdown-item svg {
            width: 14px;
            height: 14px;
            opacity: 0.6;
        }

        /* Artifact Card / Doc Card */
        .artifact-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 16px;
            margin: 12px 0;
            display: flex;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            transition: transform 0.2s;
            max-width: 320px;
        }
        .artifact-card:hover {
            transform: translateY(-2px);
            border-color: var(--primary-color);
        }
        .artifact-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(59, 130, 246, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
        }
        .artifact-info {
            flex: 1;
        }
        .artifact-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 2px;
        }
        .artifact-meta {
            font-size: 12px;
            color: var(--text-tertiary);
        }

        /* Message Footer */
        .msg-footer {
            font-size: 11px;
            color: var(--text-tertiary);
            margin-left: 8px;
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .msg-footer-item {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        /* Suggestion Chips - 简洁无边框风格 */
        .suggestion-chips {
            display: flex;
            flex-direction: column;
            gap: 0;
            margin-top: 4px;
            align-items: flex-start;
        }
        .suggestion-chip {
            background: transparent;
            border: none;
            border-radius: 0;
            padding: 4px 0;
            font-size: 15px;
            color: var(--text-secondary);
            cursor: pointer;
            transition: color 0.15s;
            display: block;
            text-align: left;
            max-width: 100%;
            line-height: 1.5;
        }
        .suggestion-chip:hover {
            background: transparent;
            color: var(--text-primary);
            transform: none;
        }

        /* Writer Mode Adjustments */
        body.writer-mode-active .message-assistant {
            background: transparent !important;
            padding-left: 0 !important;
            box-shadow: none !important;
        }
        body.writer-mode-active .bubble {
            max-width: 95% !important;
            background: transparent !important;
            border: none !important;
        }
        body.writer-mode-active .message-user .bubble {
            background: var(--bg-sidebar) !important;
            border: 1px solid var(--border-color) !important;
            color: var(--text-primary) !important;
            border-radius: 12px !important;
            padding: 8px 16px !important;
            box-shadow: none !important;
        }
        
        body.writer-mode-active .disclaimer-text {
            display: none !important;
        }
        body.writer-mode-active .agent-selector { display: none !important; }
        
        /* 写作模式/代码模式：输入框自适应窗口宽度 */
        body.writer-mode-active .input-panel,
        body.coder-mode .input-panel {
            align-items: stretch !important; /* 取消居中，拉伸到全宽 */
        }
        body.writer-mode-active .input-panel {
            padding-right: 5px !important; /* 输入框蓝线外框右边距离编辑区5px */
        }
        body.writer-mode-active .input-box-wrapper,
        body.coder-mode .input-box-wrapper {
            max-width: none !important; /* 移除 760px 限制 */
            border-radius: 16px; /* 稍小圆角更协调 */
        }
        
        .switch-to-standard-link {
            display: inline-block;
            margin: 12px 0;
            font-size: 13px;
            color: var(--text-tertiary);
            text-decoration: none;
            cursor: pointer;
        }
        .switch-to-standard-link:hover {
            color: var(--primary-color);
        }

        /* ----- 语音通话全屏覆盖层 ----- */
        .voice-overlay {
            position: fixed;
            inset: 0;
            background: var(--bg-main);
            z-index: 2000;
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: space-between;
            padding: 60px 20px 40px;
            opacity: 0;
            transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .voice-overlay.active {
            display: flex;
            opacity: 1;
        }
        .voice-overlay .gradient-circle {
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: linear-gradient(135deg, #c084fc 0%, #e879f9 50%, #f472b6 100%);
            box-shadow: 0 20px 60px rgba(232, 121, 249, 0.2);
            position: relative;
            animation: voicePulse 4s infinite ease-in-out;
            transition: background 0.5s ease, box-shadow 0.5s ease, border-radius 0.5s ease;
        }
        @keyframes voicePulse {
            0%, 100% { transform: scale(1); border-radius: 50%; }
            50% { transform: scale(1.05); border-radius: 48% 52% 50% 50%; }
        }
        
        /* 聆听状态 (Listening) - 绿色系 */
        .voice-overlay .gradient-circle.state-listening {
            background: linear-gradient(135deg, #34d399 0%, #06b6d4 100%);
            box-shadow: 0 20px 60px rgba(52, 211, 153, 0.4);
            animation: listeningPulse 1s infinite alternate ease-in-out;
        }
        @keyframes listeningPulse {
            0% { transform: scale(1); border-radius: 48% 52% 48% 52%; }
            100% { transform: scale(1.15); border-radius: 52% 48% 52% 48%; }
        }

        /* 思考状态 (Processing) - 蓝色旋转 */
        .voice-overlay .gradient-circle.state-processing {
            background: linear-gradient(135deg, #6366f1 0%, #3b82f6 100%);
            box-shadow: 0 20px 60px rgba(99, 102, 241, 0.4);
            animation: processingSpin 2s infinite linear;
            border-radius: 45% 55% 45% 55%;
        }
        @keyframes processingSpin {
            0% { transform: rotate(0deg) scale(1); }
            50% { transform: rotate(180deg) scale(1.05); }
            100% { transform: rotate(360deg) scale(1); }
        }

        /* 说话状态 (Speaking) - 紫红色，由JS控制缩放 */
        .voice-overlay .gradient-circle.state-speaking {
            background: linear-gradient(135deg, #d946ef 0%, #8b5cf6 100%);
            box-shadow: 0 20px 80px rgba(217, 70, 239, 0.6);
            animation: none; /* 禁用默认动画，由JS控制 transform */
            transition: transform 0.1s ease-out, box-shadow 0.1s ease-out;
        }
        .voice-overlay .status-area {
            margin-top: 100px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
        }
        .voice-overlay .pagination-dots {
            display: flex;
            gap: 8px;
        }
        .voice-overlay .dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background-color: #d1d1d6;
            transition: background-color 0.3s;
        }
        .voice-overlay .dot.active {
            background-color: #1c1c1e;
        }
        .voice-overlay .status-text {
            font-size: 15px;
            font-weight: 500;
            color: #1c1c1e;
            letter-spacing: 0.5px;
        }
        .voice-overlay .controls-area {
            width: 100%;
            max-width: 320px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 30px;
        }
        .voice-overlay .control-btn {
            background: transparent;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
            width: 44px;
            height: 44px;
            border-radius: 50%;
        }
        .voice-overlay .control-btn:hover {
            background-color: #f2f2f7;
        }
        .voice-overlay .control-btn svg {
            width: 24px;
            height: 24px;
            color: #1c1c1e;
            stroke-width: 1.5;
        }
        .voice-overlay .close-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background-color: #fff1f0;
            color: #ff4d4f;
        }
        .voice-overlay .close-btn:hover {
            background-color: #ffccc7;
        }
        .voice-overlay .close-btn svg {
            width: 28px;
            height: 28px;
            color: #ff4d4f;
            stroke-width: 2;
        }
        .voice-overlay .footer-info {
            font-size: 12px;
            color: #aeaeb2;
            font-weight: 400;
            margin-bottom: 10px;
        }
        .voice-mode-switch-btn {
            position: absolute;
            top: 16px;
            right: 16px;
            z-index: 10;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: 1px solid var(--border-color, rgba(0,0,0,0.1));
            background: var(--hover-bg, rgba(0,0,0,0.06));
            color: var(--text-primary, #1c1c1e);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: 0.2s;
        }
        .voice-mode-switch-btn:hover {
            background: var(--border-color, rgba(0,0,0,0.12));
        }
        .voice-mode-switch-btn svg {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
        }
        :root[data-theme="dark"] .voice-mode-switch-btn {
            border-color: rgba(255,255,255,0.15);
            background: rgba(255,255,255,0.08);
            color: #ececf1;
        }
        :root[data-theme="dark"] .voice-mode-switch-btn:hover {
            background: rgba(255,255,255,0.16);
        }
        /* ----- 视频通话全屏覆盖层 ----- */
        .video-overlay {
            position: fixed;
            inset: 0;
            background: #2C2C2C;
            z-index: 2100;
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: space-between;
            opacity: 0;
            transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            overflow: hidden;
        }
        .video-overlay.active {
            display: flex;
            opacity: 1;
        }
        .video-overlay video {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 1;
            /* 镜像显示前置摄像头 */
            transform: scaleX(-1);
        }
        .video-overlay video.back-camera {
            transform: scaleX(1);
        }
        .video-overlay .overlay-content {
            position: relative;
            z-index: 2;
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: space-between;
            pointer-events: none;
            background: linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, transparent 15%, transparent 70%, rgba(0,0,0,0.6) 100%);
        }
        .video-overlay .top-controls {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            pointer-events: auto;
            padding: 40px 20px 0;
        }
        .video-overlay .top-controls .top-right-btns {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .video-overlay .call-timer {
            background: rgba(0, 0, 0, 0.3);
            backdrop-filter: blur(10px);
            padding: 6px 16px;
            border-radius: 20px;
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 0.5px;
        }
        .video-overlay .switch-camera-btn {
            background: rgba(0, 0, 0, 0.3);
            backdrop-filter: blur(10px);
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 8px;
            border-radius: 50%;
            transition: 0.2s;
        }
        .video-overlay .switch-camera-btn:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .video-overlay .switch-camera-btn svg {
            width: 28px;
            height: 28px;
        }
        .video-overlay .status-area {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            margin-bottom: 24px;
        }
        .video-overlay .pagination-dots {
            display: flex;
            gap: 6px;
        }
        .video-overlay .dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.3);
        }
        .video-overlay .dot.active {
            background-color: #fff;
        }
        .video-overlay .status-text {
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            text-shadow: 0 1px 2px rgba(0,0,0,0.5);
        }
        .video-overlay .controls-area {
            width: 100%;
            max-width: 280px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            pointer-events: auto;
            margin-bottom: 20px;
        }
        .video-overlay .control-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #000000;
            border: none;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }
        .video-overlay .control-btn:hover {
            background: #222;
        }
        .video-overlay .control-btn svg {
            width: 24px;
            height: 24px;
        }
        .video-overlay .close-btn {
            width: 64px;
            height: 64px;
            background: #6B1111; /* Dark red */
        }
        .video-overlay .close-btn:hover {
            background: #8A1616;
        }
        .video-overlay .close-btn svg {
            width: 28px;
            height: 28px;
        }
        .video-overlay .footer-info {
            color: rgba(255, 255, 255, 0.5);
            font-size: 12px;
            pointer-events: none;
            margin-bottom: 20px;
        }
        /* ----- 录音覆盖层 (微信风格) ----- */
        .record-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 3000;
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.2s ease;
        }
        .record-overlay.active {
            display: flex;
            opacity: 1;
        }
        .record-card {
            background: var(--bg-main);
            padding: 30px;
            border-radius: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            width: 200px;
        }
        .record-wave {
            display: flex;
            align-items: center;
            gap: 4px;
            height: 40px;
        }
        .record-wave span {
            width: 4px;
            height: 10px;
            background: var(--primary-color);
            border-radius: 2px;
            animation: wave 1s infinite ease-in-out;
        }
        .record-wave span:nth-child(2) { animation-delay: 0.1s; }
        .record-wave span:nth-child(3) { animation-delay: 0.2s; }
        .record-wave span:nth-child(4) { animation-delay: 0.3s; }
        .record-wave span:nth-child(5) { animation-delay: 0.4s; }
        
        @keyframes wave {
            0%, 100% { height: 10px; }
            50% { height: 30px; }
        }
        .record-status {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .record-hint {
            font-size: 12px;
            color: var(--text-tertiary);
        }

        /* ----- 发送按钮菜单定位修正 ----- */
        .send-btn-wrapper {
            position: relative;
        }
        .send-btn-wrapper .mic-menu {
            bottom: 100%;
            right: 0;
            margin-bottom: 10px;
        }
        /* ----- 发送按钮波纹动画 ----- */
        .icon-waveform {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 2px;
            width: 20px;
            height: 20px;
        }
        .icon-waveform span {
            width: 2px;
            height: 8px;
            background: currentColor;
            border-radius: 1px;
            animation: waveform-jump 1.5s infinite ease-in-out;
        }
        .icon-waveform span:nth-child(2) { animation-delay: 0.2s; }
        .icon-waveform span:nth-child(3) { animation-delay: 0.4s; }
        .icon-waveform span:nth-child(4) { animation-delay: 0.6s; }
        .icon-waveform span:nth-child(5) { animation-delay: 0.8s; }

        @keyframes waveform-jump {
            0%, 100% { height: 6px; }
            50% { height: 16px; }
        }

        /* ----- 生成中液态呼吸停止按钮 ----- */
        .liquid-loader {
            width: 20px;
            height: 20px;
            background: #fff;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            animation: liquid-morph 4s ease-in-out infinite, liquid-spin 8s linear infinite;
            box-shadow: 0 0 10px rgba(255, 255, 255, 0.4);
        }
        .liquid-loader::after {
            content: '';
            width: 6px;
            height: 6px;
            background: #3b82f6; /* 核心停止小方块 */
            border-radius: 1px;
            animation: liquid-inner-pulse 2s ease-in-out infinite;
        }
        
        @keyframes liquid-morph {
            0%, 100% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
            33% { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
            66% { border-radius: 40% 40% 50% 50% / 40% 60% 40% 60%; }
        }
        @keyframes liquid-spin {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }
        @keyframes liquid-inner-pulse {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(0.8); opacity: 0.7; }
        }

        .send-btn.stop-btn {
            background-color: var(--primary-color) !important;
            border-color: var(--text-secondary) !important;
            box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
        }

        /* ----- 语音输入面板 (新样式) ----- */
        .voice-input-panel {
            width: 100%;
            max-width: 800px;
            background: var(--input-bg);
            padding: 8px 20px;
            display: none;
            flex-direction: row;
            align-items: center;
            gap: 15px;
            z-index: 3000;
            border-radius: 32px;
            box-shadow: var(--input-shadow);
            border: 1px solid var(--border-color);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            min-height: 56px;
        }
        .voice-input-panel.active {
            display: flex;
        }
        .voice-input-main {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 2px;
            overflow: hidden;
        }
        .voice-input-header {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-tertiary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .voice-recognized-text {
            color: var(--text-primary);
            margin-left: 6px;
            font-size: 13px;
            font-weight: 400;
        }
        .voice-input-content {
            display: contents;
        }
        .voice-close-btn, .voice-confirm-btn {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: all 0.2s;
            flex-shrink: 0;
        }
        .voice-close-btn {
            background: #fff;
            color: var(--text-secondary);
        }
        .voice-confirm-btn {
            background: #fff;
            color: var(--primary-color);
        }
        .voice-close-btn:hover { background: var(--hover-bg); }
        .voice-confirm-btn:hover { transform: scale(1.05); }
        
        .voice-visualizer {
            width: 100%;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: flex-start;
            gap: 2px;
            overflow: hidden;
        }
        .visualizer-bar {
            width: 3px;
            height: 4px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: height 0.08s ease;
        }

        @keyframes slideUp {
            from { transform: translateY(100%) scale(0.95); opacity: 0; }
            to { transform: translateY(0) scale(1); opacity: 1; }
        }
        /* Coder 模式样式优化 */
        body.coder-mode .main-content {
            flex: none;
            width: 400px; /* 与写作模式保持一致 */
            min-width: 200px;
            border-right: none;
            background: var(--bg-main);
            display: flex;
            flex-direction: column;
            overflow: hidden;
            position: relative;
        }
        #chat-editor-resizer {
            display: none !important;
        }
        body.coder-mode #chat-editor-resizer {
            display: flex !important;
            width: 24px !important;
            margin: 0 -12px !important;
            cursor: col-resize;
            z-index: 1001 !important;
            position: fixed !important;
            top: 0 !important;
            bottom: 0 !important;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            background: transparent !important;
            transition: background 0.2s;
        }
        body.coder-mode #chat-editor-resizer::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 1px;
            background: var(--border-color);
            transform: translateX(-50%);
            transition: all 0.2s;
        }
        body.coder-mode #chat-editor-resizer:hover::before,
        body.coder-mode #chat-editor-resizer.dragging::before {
            background: var(--primary-color);
            width: 2px;
        }
        body.coder-mode #chat-editor-resizer .resizer-handle {
            width: 12px;
            height: 24px;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 4px;
            z-index: 11;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            transition: all 0.2s;
        }
        body.coder-mode #chat-editor-resizer:hover .resizer-handle,
        body.coder-mode #chat-editor-resizer.dragging .resizer-handle {
            border-color: var(--primary-color);
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        body.coder-mode #chat-editor-resizer .resizer-handle span {
            width: 2px;
            height: 2px;
            background: var(--text-tertiary);
            border-radius: 50%;
            transition: background 0.2s;
        }
        body.coder-mode #chat-editor-resizer:hover .resizer-handle span,
        body.coder-mode #chat-editor-resizer.dragging .resizer-handle span {
            background: var(--primary-color);
        }

        body.coder-mode .sidebar:not(.collapsed) ~ .main-content + #chat-editor-resizer {
            left: calc(260px + 400px + 5px);
            margin-left: 0;
        }
        body.coder-mode .sidebar.collapsed ~ .main-content + #chat-editor-resizer {
            left: calc(400px + 5px);
            margin-left: 0;
        }
        body.coder-mode .sidebar:not(.collapsed) ~ .editor-overlay {
            left: calc(260px + 400px + 5px + 1px);
        }
        body.coder-mode .sidebar.collapsed ~ .editor-overlay {
            left: calc(400px + 5px + 1px);
        }
        body.coder-mode.chat-collapsed .main-content {
            display: none !important;
        }
        body.coder-mode.chat-collapsed #chat-editor-resizer {
            display: none !important;
        }
        body.coder-mode.chat-collapsed .sidebar:not(.collapsed) ~ .editor-overlay {
            left: 280px !important;
        }
        body.coder-mode.chat-collapsed .sidebar.collapsed ~ .editor-overlay {
            left: 0 !important;
        }
        body.coder-mode .editor-overlay {
            position: fixed;
            right: 0;
            top: 0;
            bottom: 0;
            z-index: 1000;
            display: flex;
            animation: none;
            background: var(--bg-main);
            border-left: none;
            padding-top: env(safe-area-inset-top, 20px);
            overflow: hidden;
        }
        
        /* 编辑器增强样式 */
        .editor-container {
            position: relative;
            flex: 1;
            display: flex;
            overflow: hidden;
            background: #fafafa;
        }
        #ace-editor {
            flex: 1;
            width: 100%;
            height: 100%;
        }
        #ace-editor *,
        #ace-editor .ace_content,
        #ace-editor .ace_text-layer,
        #ace-editor .ace_line,
        #ace-editor .ace_gutter {
            font-family: Monaco, Menlo, 'Ubuntu Mono', Consolas, 'Source Code Pro', monospace !important;
        }
        #ace-editor .ace_text-input {
            font-size: 16px !important;
        }
        .line-numbers {
            width: 45px;
            padding: 16px 8px;
            text-align: right;
            font-family: 'Fira Code', Consolas, Monaco, 'Courier New', monospace;
            font-size: 14px;
            line-height: 26px;
            color: #999;
            background: #f8f9fa;
            border-right: 1px solid #eee;
            user-select: none;
            overflow: hidden;
            line-height: 1.6;
        }
        /* Ace Editor 模式下隐藏旧元素 */
        body.coder-mode .editor-textarea-wrapper { display: none; }
        body.coder-mode .editor-highlight { display: none; }
        .editor-textarea, .editor-highlight {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            padding: 16px;
            margin: 0;
            border: none;
            outline: none;
            font-family: 'Fira Code', Consolas, Monaco, 'Courier New', monospace;
            font-size: 16px;
            line-height: 26px;
            white-space: pre;
            overflow: auto;
            tab-size: 4;
            box-sizing: border-box;
            -webkit-appearance: none;
            appearance: none;
            letter-spacing: normal;
            word-spacing: normal;
            font-variant-ligatures: none;
            font-feature-settings: normal;
            text-rendering: optimizeSpeed;
        }
        /* 旧 textarea/highlight 样式已移除，使用 Ace Editor */
        .editor-highlight {
            z-index: 1;
            pointer-events: none;
            background: #fafafa;
            color: #24292e;
            scrollbar-width: none;
            display: none;
        }
        :root[data-theme="dark"] .editor-highlight {
            background: #0d1117;
            color: #c9d1d9;
            display: none;
        }
        .editor-highlight::-webkit-scrollbar { display: none; }
        .line-numbers::-webkit-scrollbar { display: none; }
        .line-numbers {
            scrollbar-width: none;
        }
        .editor-highlight code {
            font-family: inherit !important;
            font-size: inherit !important;
            background: transparent !important;
            padding: 0 !important;
        }
        
        .editor-pane {
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .editor-copy-btn {
            position: absolute;
            top: 45px;
            right: 10px;
            z-index: 10;
            background: var(--bg-main);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 6px;
            cursor: pointer;
            color: var(--text-tertiary);
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .editor-copy-btn:hover {
            color: var(--primary-color);
            background: var(--hover-bg);
        }
        .editor-copy-btn svg { width: 16px; height: 16px; }
        body.coder-mode .api-key-link, 
        body.coder-mode #login-btn, 
        body.coder-mode #user-info-area { 
            display: none !important; 
        }
        body.coder-mode .model-selector {
            font-size: 13px !important;
        }
        body.coder-mode .input-box-wrapper {
            width: 100% !important; /* 自适应窗口宽度，不固定 */
            max-width: none !important;
            border-radius: 16px;
        }
        body.coder-mode .file-ref-cards {
            max-width: none !important;
        }
        body.coder-mode .input-panel {
            padding: 12px;
            padding-right: 5px; /* 输入框蓝线外框右边距离编辑区5px（覆盖上方公共规则） */
            background: var(--bg-main);
            border-top: none;
        }
        body.coder-mode .input-container {
            width: 100% !important;
            max-width: 100% !important;
            margin: 0 !important;
        }
        body.coder-mode .top-nav {
            padding: 0 8px;
            height: 40px;
            justify-content: space-between;
            gap: 4px;
        }
        body.coder-mode .top-nav .custom-model-dropdown {
            margin: 0;
        }
        body.coder-mode .top-nav .model-trigger {
            padding: 2px 8px;
            font-size: 12px;
        }
        body.coder-mode .new-chat-top-btn {
            display: none; /* 空间有限，隐藏顶部新建按钮 */
        }
        body.coder-mode .content-wrapper {
            padding-top: 0 !important;  /* top-nav 是 absolute，padding 移到子元素 */
        }
        body.coder-mode .chat-container {
            padding: 60px 12px 12px;  /* 顶部为 top-nav 留空间 */
            padding-right: 5px;
        }
        body.coder-mode .message {
            max-width: 95%;
            font-size: 14px;
        }
        body.coder-mode .message-content {
            padding: 10px 12px;
            max-width: 100% !important;
        }
        /* Coder 模式 AI 回复文字协调缩小 */
        body.coder-mode .markdown-body { font-size: 13px; line-height: 1.55; }
        body.coder-mode .markdown-body p { font-size: 13px; }
        body.coder-mode .markdown-body li { font-size: 13px; }
        body.coder-mode .markdown-body h1 { font-size: 18px; }
        body.coder-mode .markdown-body h2 { font-size: 15px; }
        body.coder-mode .markdown-body h3 { font-size: 14px; }
        body.coder-mode .markdown-body code { font-size: 12px; }
        body.coder-mode .markdown-body pre { font-size: 12px; }

        /* 使用说明模态框 */
        .manual-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 3000;
            justify-content: center;
            align-items: center;
            backdrop-filter: blur(4px);
        }
        /* 文本审查增强样式 */
        .review-layout {
            display: flex;
            height: 520px;
            overflow: hidden;
            background: #ffffff;
            border-radius: 0 0 16px 16px;
        }
        .review-sidebar {
            width: 220px;
            border-right: 1px solid var(--border-color);
            background: #ffffff;
            display: flex;
            flex-direction: column;
            border-radius: 16px 0 0 16px;
        }
        .review-skill-list {
            flex: 1;
            overflow-y: auto;
            padding: 12px;
        }
        .review-skill-item {
            padding: 12px;
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.2s;
            margin-bottom: 6px;
            border: 1px solid transparent;
            background: #f8fafc;
        }
        .review-skill-item:hover {
            background: var(--bg-hover);
            transform: translateY(-1px);
        }
        .review-skill-item.active {
            background: rgba(59, 130, 246, 0.08);
            color: var(--primary-color);
            border-color: rgba(59, 130, 246, 0.2);
            box-shadow: 0 2px 4px rgba(59, 130, 246, 0.05);
        }
        .review-skill-name {
            font-size: 13px;
            font-weight: 600;
            display: block;
            margin-bottom: 4px;
        }
        .review-skill-desc {
            font-size: 11px;
            color: var(--text-tertiary);
            line-height: 1.4;
        }
        .review-main {
            flex: 1;
            display: flex;
            flex-direction: column;
            padding: 24px;
            background: #ffffff;
        }
        .review-editor-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
        }
        .review-upload-zone {
            padding: 16px;
            border: 2px dashed var(--border-color);
            border-radius: 12px;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s;
            margin-bottom: 20px;
            color: var(--text-secondary);
            font-size: 13px;
            background: #fcfdfe;
        }
        .review-upload-zone:hover {
            background: rgba(59, 130, 246, 0.02);
            border-color: var(--primary-color);
            color: var(--primary-color);
        }
        .review-footer {
            display: flex;
            justify-content: flex-end;
            gap: 12px;
            padding-top: 20px;
        }
        .manual-modal.active { display: flex; }
        .review-skill-group-title {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--text-tertiary);
            padding: 12px 12px 6px 16px;
            font-weight: 700;
        }
        .review-close-btn {
            background: transparent;
            border: none;
            color: var(--text-tertiary);
            cursor: pointer;
            padding: 4px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }
        .review-close-btn:hover {
            background: #f1f5f9;
            color: #ef4444;
        }

        /* Input Shield Button & Popover */
        .quick-review-menu {
            position: absolute;
            bottom: calc(100% + 12px);
            left: 0;
            width: 240px;
            background: #ffffff;
            border-radius: 12px;
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
            border: 1px solid var(--border-color);
            z-index: 9999999;
            display: none;
            flex-direction: column;
            overflow: hidden;
            animation: popIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
        }
        @keyframes popIn {
            from { opacity: 0; transform: translateY(10px) scale(0.95); }
            to { opacity: 1; transform: translateY(0) scale(1); }
        }
        .quick-review-menu.active { display: flex; }
        .quick-review-header {
            padding: 12px 16px;
            font-size: 11px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--text-tertiary);
            background: #f8fafc;
            border-bottom: 1px solid var(--border-color);
        }
        .quick-review-list {
            max-height: 300px;
            overflow-y: auto;
            padding: 6px;
        }
        .quick-review-item {
            padding: 10px 12px;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: #475569;
        }
        .quick-review-item:hover {
            background: #f1f5f9;
            color: var(--primary-color);
        }
        .quick-review-item.selected {
            background: rgba(59, 130, 246, 0.08);
            color: var(--primary-color);
            font-weight: 600;
        }
        .quick-review-footer {
            padding: 8px;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .quick-review-action {
            width: 100%;
            padding: 8px;
            border: none;
            background: transparent;
            color: #64748b;
            font-size: 12px;
            cursor: pointer;
            border-radius: 6px;
            transition: 0.2s;
            text-align: left;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .quick-review-action:hover {
            background: #f8fafc;
            color: var(--primary-color);
        }
        
        body.writer-mode-active #review-popover-wrapper {
            display: block !important;
        }
        .manual-content {
            background: var(--bg-main);
            width: 90%;
            max-width: 700px;
            max-height: 85vh;
            border-radius: 20px;
            padding: 32px;
            overflow-y: auto;
            position: relative;
            box-shadow: 0 20px 50px rgba(0,0,0,0.2);
        }
        .manual-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 16px;
        }
        .manual-title { font-size: 24px; font-weight: 700; color: var(--text-primary); }
        .manual-close { cursor: pointer; color: var(--text-tertiary); }
        .manual-section { margin-bottom: 24px; }
        .manual-section h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; color: var(--primary-color); }
        .manual-section p { font-size: 15px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 8px; }
        .manual-section ul { padding-left: 20px; }
        .manual-section li { font-size: 14px; color: var(--text-secondary); margin-bottom: 6px; line-height: 1.5; }
        body.coder-mode #close-editor-btn { display: none; }
        body.coder-mode #ide-mode-tabs { display: flex !important; }
        body.coder-mode.chat-collapsed #expand-chat-btn { display: flex !important; }
        body.coder-mode .old-action-btn { display: none; }
        body.coder-mode #browser-toolbar { display: flex !important; }
        body.coder-mode #ide-fullscreen-btn { display: flex !important; }
        /* 电脑版：所有操作按钮直接展示，不折叠到三点菜单 */
        body.coder-mode #ide-refresh-btn { display: flex !important; }
        body.coder-mode #ide-copy-btn { display: flex !important; }
        body.coder-mode #ide-download-btn { display: flex !important; }
        body.coder-mode #ide-publish-btn { display: flex !important; }
        body.coder-mode #ide-more-btn { display: none !important; }
        body.coder-mode #ide-ref-btn { display: flex !important; }
        body.coder-mode #ide-save-btn { display: flex !important; }
        body.coder-mode #ide-undo-btn { display: flex !important; }
        body.coder-mode #ide-redo-btn { display: flex !important; }
        body.coder-mode #ide-close-coder-btn { display: flex !important; }
        body.coder-mode #coder-model-selector { display: block !important; }
        
        body.coder-mode #toggle-preview-btn { display: none; }
        .ide-mode-tabs { display: flex; gap: 4px; background: var(--hover-bg); padding: 4px; border-radius: 8px; }
        .ide-tab-btn { background: transparent; border: none; color: var(--text-tertiary); padding: 6px 12px; border-radius: 6px; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: 0.2s; }
        .ide-tab-btn:hover { color: var(--text-primary); }
        .ide-tab-btn.active { background: var(--bg-main); color: var(--text-primary); box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
        .ide-tab-btn svg { width: 16px; height: 16px; }

        /* 编程模式模型选择器 */
        .coder-model-option { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 6px; cursor: pointer; font-size: 12px; color: var(--text-primary); transition: 0.15s; }
        .coder-model-option:hover { background: var(--hover-bg); }
        .coder-model-option.active { background: var(--hover-bg); color: var(--primary-color); }

        /* 文件树 Tab 导航 */
        .tree-tab-btn:hover { color: var(--text-primary) !important; }

        /* 文件树面板切换 */
        .tree-pane-hidden { display: none; }

        /* 分享按钮脉冲提示 */
        .pulse-hint { animation: pulseHint 1.5s ease-in-out infinite; }
        @keyframes pulseHint { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.15); opacity: 0.8; } }

        /* 技能/云盘树项目 */
        .tree-item { display: flex; align-items: center; gap: 6px; padding: 6px 8px; border-radius: 6px; cursor: pointer; font-size: 12px; color: var(--text-primary); transition: 0.15s; }
        .tree-item:hover { background: var(--hover-bg); }
        .tree-item-icon { font-size: 14px; flex-shrink: 0; width: 14px; height: 14px; display: flex; align-items: center; justify-content: center; }
        .tree-item-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
        .tree-item-action { opacity: 0; transition: 0.15s; font-size: 10px; color: var(--text-tertiary); flex-shrink: 0; display: flex; align-items: center; }
        .tree-item:hover .tree-item-action { opacity: 1; }

        
        .device-btn {
            background: transparent;
            border: none;
            padding: 4px 8px;
            cursor: pointer;
            color: var(--text-secondary);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }
        .device-btn:hover { color: var(--text-primary); }
        .device-btn.active {
            background: #fff;
            color: var(--primary-color);
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        }
        [data-theme="dark"] .device-btn.active {
            background: #333;
        }
        
        /* Device Preview Container Styles */
        .preview-pane {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: #f1f5f9;
            transition: all 0.3s ease;
            position: relative;
        }
        .preview-container {
            width: 100%;
            height: 100%;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            background: #fff;
            border-radius: 0;
            overflow: hidden;
            display: flex;
            position: relative;
        }
        #editor-preview-console {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 40%;
            background: #1e1e1e;
            color: #d4d4d4;
            font-family: 'Fira Code', Consolas, Monaco, 'Courier New', monospace;
            font-size: 12px;
            padding: 10px;
            overflow-y: auto;
            border-top: 2px solid #333;
            display: none;
            z-index: 100;
        }
        .console-line { margin-bottom: 4px; border-bottom: 1px solid #333; padding-bottom: 4px; line-height: 1.4; white-space: pre-wrap; word-break: break-all; }
        .console-log { color: #85d7ff; }
        .console-error { color: #f48771; }
        .console-success { color: #89d185; }
        .console-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; border-bottom: 1px solid #444; padding-bottom: 4px; font-weight: 800; font-size: 10px; color: #888; }
        .preview-pane.device-mobile .preview-container {
            width: 375px;
            height: 812px;
            max-height: 90%;
            border-radius: 36px;
            border: 12px solid #222;
        }
        .preview-pane.device-tablet .preview-container {
            width: 768px;
            height: 1024px;
            max-height: 90%;
            max-width: 90%;
            border-radius: 24px;
            border: 12px solid #222;
        }
        .preview-pane.fullscreen-active {
            position: fixed !important;
            top: 0 !important;
            left: 0 !important;
            right: 0 !important;
            bottom: 0 !important;
            width: 100vw !important;
            height: 100vh !important;
            height: 100dvh !important;
            z-index: 99999 !important;
            display: flex !important;
            align-items: center !important;
            justify-content: center !important;
        }
        /* 全屏预览时隐藏编辑器顶栏和侧边栏 */
        .preview-pane.fullscreen-active ~ .editor-top-bar,
        body:has(.preview-pane.fullscreen-active) .editor-top-bar,
        .preview-pane.fullscreen-active ~ .editor-top-right,
        body:has(.preview-pane.fullscreen-active) .editor-top-right { display: none !important; }
        /* 全屏预览时隐藏顶部导航栏 */
        body:has(.preview-pane.fullscreen-active) .top-nav { display: none !important; }
        .preview-pane.fullscreen-active .preview-container {
            width: 100% !important;
            height: 100% !important;
            max-width: 100% !important;
            max-height: 100% !important;
            border-radius: 0 !important;
            border: none !important;
        }
        .preview-pane.fullscreen-active .preview-container {
            width: 100%;
            height: 100%;
            border-radius: 0;
            border: none;
            max-width: none;
            max-height: none;
        }
        
        
        .ide-action-btn { padding: 3px 10px; border-radius: 6px; font-size: 13px; font-weight: 500; cursor: pointer; display: flex; align-items: center; transition: 0.2s; }
        .ide-action-btn.secondary { background: var(--bg-main); border: 1px solid var(--border-color); color: var(--text-primary); }
        .ide-action-btn.secondary:hover { background: var(--hover-bg); }
        .ide-action-btn.primary { background: #1a1a1a; border: 1px solid #1a1a1a; color: #fff; margin-left: 8px; }
        .ide-action-btn.primary:hover { background: #333; }
        :root[data-theme="dark"] .ide-action-btn.primary { background: #fff; color: #000; border-color: #fff; }
        :root[data-theme="dark"] .ide-action-btn.primary:hover { background: #eee; }
        .ide-icon-btn { background: transparent !important; border: none !important; padding: 6px !important; cursor: pointer; color: var(--text-secondary); }
        .ide-icon-btn:hover { background: transparent !important; color: var(--text-primary); }

        .file-tree-pane { width: 220px; border-right: 1px solid var(--border-color); display: flex; flex-direction: column; background: var(--bg-sidebar); flex-shrink: 0; transition: width 0.3s; }
        .file-tree-pane.collapsed { width: 0; overflow: hidden; border-right: none; }
        .file-tree-header { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; }
        .file-tree-title { font-size: 14px; font-weight: 500; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .file-tree-actions { display: flex; align-items: center; gap: 2px; }
        .file-tree-action-btn { background: transparent; border: none; color: var(--text-secondary); padding: 4px; cursor: pointer; border-radius: 6px; display: flex; align-items: center; justify-content: center; transition: 0.2s; }
        .file-tree-action-btn:hover { background: var(--hover-bg); color: var(--text-primary); }
        .file-tree-action-btn svg { width: 16px; height: 16px; }
        
        .file-add-menu { display: none; position: absolute; top: 100%; right: 0; margin-top: 4px; background: var(--bg-main); border: 1px solid var(--border-color); border-radius: 8px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); z-index: 100; width: 180px; flex-direction: column; padding: 4px; }
        .file-add-menu.active { display: flex; }
        .file-add-menu-item { display: flex; align-items: center; gap: 8px; padding: 8px 12px; font-size: 13px; color: var(--text-primary); cursor: pointer; border-radius: 6px; transition: 0.2s; }
        .file-add-menu-item:hover { background: var(--hover-bg); }
        .file-add-menu-item svg { width: 16px; height: 16px; color: var(--text-secondary); }
        
        .file-search-container { display: none; padding: 8px; }
        .file-search-container.active { display: block; }
        .file-search-input { width: 100%; padding: 6px 8px; border-radius: 4px; border: 1px solid var(--border-color); background: var(--bg-main); color: var(--text-primary); font-size: 12px; outline: none; }
        
        .file-tree-content { padding: 8px; overflow-y: auto; flex: 1; }
        .file-item { display: flex; align-items: center; justify-content: space-between; padding: 6px 12px; font-size: 13px; color: var(--text-secondary); cursor: pointer; border-radius: 6px; margin-bottom: 2px; }
        .file-folder { display: flex; align-items: center; gap: 6px; padding: 6px 12px; font-size: 13px; color: var(--text-secondary); cursor: pointer; border-radius: 6px; margin-bottom: 2px; }
        .file-item-left { display: flex; align-items: center; gap: 6px; flex: 1; overflow: hidden; }
        .file-item-icon { width: 14px; height: 14px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
        .file-item-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
        .file-item-actions { display: none; align-items: center; gap: 4px; }
        .file-item:hover .file-item-actions { display: flex; }
        .file-action-btn { background: transparent; border: none; color: var(--text-tertiary); padding: 2px; cursor: pointer; border-radius: 4px; display: flex; align-items: center; justify-content: center; }
        .file-action-btn:hover { color: var(--text-primary); background: var(--border-color); }
        .file-item:hover, .file-folder:hover { background: var(--hover-bg); color: var(--text-primary); }
        .file-item svg, .file-folder svg { width: 14px; height: 14px; color: var(--text-tertiary); flex-shrink: 0; }
        
        .file-item.active { background: var(--hover-bg); color: var(--text-primary); }
        .folder-content { display: none; }
        .folder-icon { transition: transform 0.2s; }
        
        .editor-tabs { display: flex; border-bottom: 1px solid var(--border-color); background: var(--bg-sidebar); overflow-x: auto; }
        .editor-tab { padding: 10px 20px; font-size: 13px; color: var(--text-secondary); cursor: pointer; display: flex; align-items: center; gap: 10px; border-right: 1px solid var(--border-color); background: var(--bg-sidebar); white-space: nowrap; }
        .editor-tab.active { background: var(--bg-main); color: var(--text-primary); border-bottom: 1px solid var(--bg-main); margin-bottom: -1px; }
        .close-tab { color: var(--text-tertiary); font-size: 16px; line-height: 1; margin-left: 4px; }
        .close-tab:hover { color: var(--text-primary); }
        
        .terminal-pane { height: 240px; border-top: 1px solid var(--border-color); display: flex; flex-direction: column; background: #1e1e1e; flex-shrink: 0; }
        .terminal-tabs { display: flex; border-bottom: 1px solid #333; background: #252526; }
        .term-tab { padding: 8px 20px; font-size: 12px; color: #969696; cursor: pointer; }
        .term-tab.active { color: #fff; border-bottom: 2px solid var(--primary-color); background: #1e1e1e; }
        .terminal-content { flex: 1; padding: 12px; font-family: 'Fira Code', monospace; font-size: 12px; color: #cccccc; overflow-y: auto; line-height: 1.5; }
        
        .cursor {
            display: inline-block;
            width: 8px;
            height: 15px;
            background: #4ade80;
            animation: blink 1s step-end infinite;
            vertical-align: middle;
        }
        @keyframes blink {
            from, to { opacity: 1; }
            50% { opacity: 0; }
        }
        
        /* 隐藏非 Coder 模式下的元素 */
        .editor-overlay:not(.coder-mode-active) .file-tree-pane,
        .editor-overlay:not(.coder-mode-active) .editor-tabs,
        .editor-overlay:not(.coder-mode-active) .terminal-pane {
            display: none;
        }
        .editor-overlay.coder-mode-active .file-tree-pane { display: flex; }
        .editor-overlay.coder-mode-active .editor-tabs { display: flex; }
        .editor-overlay.coder-mode-active .terminal-pane { display: flex; }
        
        .history-dropdown { position: absolute; top: 100%; left: 0; margin-top: 8px; width: 300px; background: var(--bg-main); border: 1px solid var(--border-color); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.1); z-index: 3000; overflow: hidden; }
        .history-dropdown-header { padding: 16px; }
        .history-dropdown-title { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
        .history-dropdown-subtitle { font-size: 12px; color: var(--text-tertiary); }
        .history-dropdown-list { max-height: 300px; overflow-y: auto; padding: 8px; }
        .history-dropdown-item { display: flex; align-items: center; justify-content: space-between; padding: 12px; border-radius: 8px; cursor: pointer; transition: 0.2s; }
        .history-dropdown-item:hover { background: var(--hover-bg); }
        .history-dropdown-item.active { background: var(--hover-bg); border-left: 3px solid var(--primary-color); }
        .history-item-name { font-size: 13px; font-weight: 500; color: var(--text-primary); margin-bottom: 4px; }
        .history-item-time { font-size: 11px; color: var(--text-tertiary); }
        .history-item-hash { font-family: monospace; font-size: 12px; color: var(--text-tertiary); background: var(--border-color); padding: 2px 6px; border-radius: 4px; }
        .custom-provider-group {
            margin-bottom: 15px;
        }
        .custom-provider-group label {
            display: block;
            margin-bottom: 5px;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .custom-provider-group input {
            width: 100%;
            padding: 8px 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            background: transparent;
            color: var(--text-primary);
            box-sizing: border-box;
        }
        .custom-provider-group input:focus {
            border-color: #10a37f;
            outline: none;
            box-shadow: 0 0 0 2px rgba(16, 163, 127, 0.1);
        }
        .custom-provider-help {
            font-size: 12px;
            color: var(--text-tertiary);
            margin-top: 4px;
        }
        /* Custom Checkbox Slider */
        .switch input:checked + .slider {
            background-color: #10a37f;
        }
        .switch input:focus + .slider {
            box-shadow: 0 0 1px #10a37f;
        }
        .switch input:checked + .slider:before {
            transform: translateX(20px);
        }
        .slider.round:before {
            border-radius: 50%;
            position: absolute;
            content: "";
            height: 16px;
            width: 16px;
            left: 2px;
            bottom: 2px;
            background-color: white;
            transition: .4s;
        }
        .dynamic-list-container {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 8px;
        }
        .dynamic-list-row {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .dynamic-list-row input {
            flex: 1;
        }
        .remove-row-btn {
            background: transparent;
            border: none;
            color: var(--text-tertiary);
            cursor: pointer;
            padding: 4px;
            display: flex;
        }
        .remove-row-btn:hover {
            color: var(--danger-color, #ef4444);
        }
        /* ===== 自定义模型能力开关 ===== */
        .dynamic-list-row.model-cap-row {
            flex-wrap: wrap;
        }
        .model-cap-toggles {
            display: flex;
            gap: 4px;
            flex-wrap: nowrap;
            flex-shrink: 0;
        }
        .model-cap-tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 8px;
            border-radius: 12px;
            font-size: 10px;
            font-weight: 600;
            cursor: pointer;
            border: 1px solid var(--border-color);
            background: transparent;
            color: var(--text-tertiary);
            transition: all 0.15s;
            user-select: none;
            white-space: nowrap;
        }
        .model-cap-tag.on {
            background: var(--cap-color, #3b82f6);
            color: #fff;
            border-color: var(--cap-color, #3b82f6);
        }
        .model-cap-tag:hover {
            opacity: 0.8;
        }
        .add-row-btn {
            background: transparent;
            border: none;
            color: var(--text-secondary);
            font-size: 13px;
            cursor: pointer;
            padding: 4px 0;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .add-row-btn:hover {
            color: var(--text-primary);
        }
        .cp-list-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 10px;
            background: var(--bg-color);
        }
        .cp-list-info {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .cp-list-name {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-primary);
        }
        .cp-list-url {
            font-size: 12px;
            color: var(--text-tertiary);
        }
        .cp-list-actions {
            display: flex;
            gap: 8px;
        }
        .cp-action-btn {
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            padding: 6px 10px;
            font-size: 12px;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.2s;
        }
        .cp-action-btn:hover {
            background: var(--hover-bg);
            color: var(--text-primary);
        }
        .cp-action-btn.danger:hover {
            border-color: rgba(239, 68, 68, 0.3);
            color: #ef4444;
            background: rgba(239, 68, 68, 0.05);
        }

        /* ==================== 移动端/平板端系统化适配 (全面优化) ==================== */
        
        /* P0修复: iOS状态栏透明遮罩 - 保持状态栏透明以统一页面风格 */
        @supports (padding-top: env(safe-area-inset-top)) {
            .main-content::before {
                content: '';
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                height: env(safe-area-inset-top);
                background: transparent;
                z-index: 90;
                pointer-events: none;
            }
        }
        :root[data-theme="light"] .main-content::before {
            background: transparent !important;
        }
        :root[data-theme="dark"] .main-content::before {
            background: transparent !important;
        }
        
        /* ★ P1修复: 防止双击缩放 - 仅应用于交互元素,不禁止画布手势 */
        button, a, .nav-item, .model-item, .history-item, .model-trigger,
        .input-box-wrapper, .sidebar, .settings-item, .user-profile-card,
        .section-header, .collapse-btn, .close-sidebar-btn, .mobile-overlay,
        .modal-overlay, .modal-content, .form-group input, .captcha-row img,
        .btn-submit-full, .logout-btn-subtle, .login-btn, .new-chat-btn,
        .scroll-to-bottom-btn, .attach-btn, .send-btn, .writing-mode-btn,
        .input-write-btn, .canvas-top-bar button, .ai-tool-btn,
        .user-menu-item, .menu-item, .model-expand-btn, .claim-discount-btn,
        .history-item-wrapper, .more-btn, .close-modal-btn, .search-input-wrapper,
        .sidebar-search-container button, .captcha-row button {
            touch-action: manipulation;
        }
        
        /* 交互元素触摸优化 */
        button, a, .nav-item, .model-item, .history-item {
            -webkit-touch-callout: none;
            -webkit-tap-highlight-color: transparent;
        }
        
        /* ★ P0修复: 聊天消息允许文本选择 (覆盖全局限制) */
        .message-content, .message-content * {
            -webkit-user-select: text;
            user-select: text;
            -webkit-touch-callout: default;
        }
        .message-content pre, .message-content code {
            -webkit-user-select: text;
            user-select: text;
        }
        
        /* ★ P0修复: 画布覆盖层允许所有手势 */
        #canvas-overlay, #canvas-overlay iframe {
            touch-action: none !important;
            overscroll-behavior: none !important;
            overscroll-behavior-x: none !important;
            overscroll-behavior-y: none !important;
        }
        /* 画布覆盖层的交互按钮恢复 manipulation */
        #canvas-overlay button, .canvas-top-bar button, .ai-tool-btn {
            touch-action: manipulation !important;
        }
        
        /* P0修复: 全局阻止弹性滚动和下拉刷新 (所有设备) */
        body {
            overscroll-behavior: none;
            overscroll-behavior-x: none;
            overscroll-behavior-y: none;
            /* 移除 position:fixed - 使用 overscroll-behavior 阻止弹性滚动和右滑返回 */
            -webkit-overflow-scrolling: touch;
            /* iOS 15.5+ 原生支持 overscroll-behavior，无需 fixed */
            position: relative;
            width: 100%;
            height: 100vh;
            height: 100dvh;
            overflow: hidden;
        }
        
        /* 滚动容器允许纵向滚动但阻止弹性效果和水平滑动 */
        .chat-container, .history-list, .model-list, .sidebar {
            -webkit-overflow-scrolling: touch;
            overscroll-behavior: contain;
            overscroll-behavior-x: none;
        }
        
        /* ==================== iOS 键盘优化 ==================== */
        /* 输入框获得焦点时不触发整页滚动 */
        .message-input:focus, #message-input:focus, textarea:focus {
            /* 阻止 iOS 自动缩放 */
            font-size: 16px !important;
        }
        /* 键盘弹出时固定底部输入栏 */
        .input-panel {
            position: sticky;
            bottom: 0;
            z-index: 50;
        }
        
        /* iOS 键盘弹起时的布局修复 (所有触摸设备) */
        /* ==================== 各尺寸设备专项优化 ==================== */
        
        /* 小屏手机 (iPhone SE 等) */
        /* 平板端优化 (iPad / Android 平板) */
        /* iPad Split View / Slide Over 适配 */
        /* 横屏模式优化 (所有设备) */
        /* 大屏 iPad Pro 优化 */
        /* ==================== P0-P2 移动端体验修复 ==================== */
        
        /* P0: 代码块操作按钮 ≥44px 触摸目标 (Apple HIG) */
        /* P0: 平板端也加大代码按钮 */
        /* P1: 模型菜单左偏移修正 - 小屏居中 */
        /* P1: 消息操作按钮移动端加大触摸目标 */
        /* P1: Toast 安全区适配 */
        /* P2: 滚动到底部按钮安全区适配 */
        /* P0: Coder模式移动端 - 底部Tab切换替代三栏布局 */
        /* 桌面端隐藏移动Coder切换栏 */
        /* P2: 侧边栏iOS返回手势冲突修复 - 使用overscroll-behavior-x */
        /* P2: 横屏模式更高效利用空间 */
        /* P1: 移动端写作模式全屏覆盖 */
        /* P2: 暗色模式下select/input原生控件样式 */
        /* 暗色模式下画布顶栏适配 */
        :root[data-theme="dark"] .canvas-top-bar {
            background: rgba(30, 30, 30, 0.92) !important;
            border-bottom-color: rgba(255,255,255,0.1) !important;
        }

        /* Agent Step Cards */
        .agent-step-card {
            background: var(--card-bg, #fff);
            border: 1px solid var(--border-color, #e5e7eb);
            border-radius: 12px;
            padding: 14px 16px;
            margin: 8px 0;
            transition: all 0.2s;
        }
        .agent-step-card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
        .agent-step-header {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
            font-size: 14px;
        }
        .agent-step-icon { font-size: 16px; }
        .agent-step-title { flex: 1; color: var(--text-primary, #1f2937); }
        .agent-step-status { font-size: 14px; }
        .agent-step-desc {
            font-size: 12px;
            color: var(--text-secondary, #6b7280);
            margin-top: 6px;
            padding-left: 24px;
        }
        .agent-step-code {
            margin-top: 8px;
            background: var(--code-bg, #f3f4f6);
            border-radius: 8px;
            padding: 12px;
            font-size: 12px;
            overflow-x: auto;
            max-height: 200px;
        }
        .agent-step-actions {
            margin-top: 10px;
            display: flex;
            gap: 8px;
        }
        .agent-btn {
            padding: 6px 16px;
            border-radius: 8px;
            border: 1px solid var(--border-color, #e5e7eb);
            background: var(--card-bg, #fff);
            color: var(--text-primary, #1f2937);
            cursor: pointer;
            font-size: 13px;
            transition: all 0.15s;
        }
        .agent-btn:hover { background: var(--hover-bg, #f3f4f6); }
        .agent-btn.primary {
            background: var(--primary-color, #3b82f6);
            color: #fff;
            border-color: transparent;
        }
        .agent-step-card[data-type="create"] { border-left: 3px solid #10b981; }
        .agent-step-card[data-type="modify"] { border-left: 3px solid #f59e0b; }
        .agent-step-card[data-type="analyze"] { border-left: 3px solid #6366f1; }
        .agent-step-card[data-type="command"] { border-left: 3px solid #ef4444; }
        .agent-step-card[data-type="question"] { border-left: 3px solid #8b5cf6; }

        /* ==================== 合并后的响应式样式 ==================== */
        @media (max-width: 375px) {
            .model-menu {
                width: calc(100vw - 24px) !important;
                left: 50% !important;
                transform: translateX(-50%);
            }
            .input-box-wrapper { border-radius: 18px !important; }
        }
        @media (max-width: 768px) {
            /* 手机端应用中心 — 操作按钮默认显示（无hover） */
            .my-app-card-actions { opacity: 1 !important; }
            .app-card-actions-bar { opacity: 1 !important; }
            .my-app-card:hover { transform: none !important; box-shadow: none !important; }
            /* 手机端预览返回按钮 */
            body.coder-mode.mobile-pane-preview #preview-back-btn { display: flex !important; }
            .file-ref-cards { padding: 0 8px 4px; gap: 4px; }
            .file-ref-card { padding: 3px 8px; font-size: 11px; max-width: 160px; gap: 3px; }
            .file-ref-card .file-ref-icon { width: 12px; height: 12px; }
            .file-ref-card .file-ref-size { font-size: 10px; }
            .file-ref-card .file-ref-close { width: 14px; height: 14px; font-size: 12px; }
            
            .multi-response-container { padding: 8px; }
            .multi-response-grid { flex-direction: column !important; }
            .multi-response-body {
                font-size: 13px !important;
                padding: 10px 12px !important;
            }
            /* model-menu now uses bottom-sheet styles below */
            /* 手机端：菜单改为底部弹出面板 */
            .model-menu,
            .agent-selector-menu {
                position: fixed !important;
                left: 50% !important;
                top: 40px !important;
                transform: translateX(-50%) !important;
                z-index: 2147483646 !important;
                width: 90% !important;
                max-width: 400px !important;
                max-height: 80vh !important;
                border-radius: 16px !important;
                padding: 20px 16px !important;
                background: var(--bg-main) !important;
                border: 1px solid var(--border-color) !important;
                box-shadow: 0 10px 40px rgba(0,0,0,0.3) !important;
                /* 默认隐藏 */
                display: none;
            }
            .model-menu.active,
            .agent-selector-menu.show {
                display: flex;
                flex-direction: column;
            }
            /* 拖动条 */
            .model-menu::before,
            .agent-selector-menu::before {
                content: '';
                display: block;
                width: 36px;
                height: 4px;
                border-radius: 2px;
                background: var(--border-color);
                margin: -8px auto 16px;
                flex-shrink: 0;
            }
            .agent-selector-scroll { max-height: 50vh; }
            /* 手机端底部弹出遮罩 */
            .mobile-sheet-backdrop {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0,0,0,0.4);
                z-index: 99999;
                opacity: 0;
                transition: opacity 0.3s;
            }
            .mobile-sheet-backdrop.active {
                display: block;
                opacity: 1;
            }
            .menu-header { display: none; }
            .input-panel {
                padding: 6px 10px 10px !important;
                padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px)) !important;
                margin-bottom: 0 !important;
            }
            .input-box-wrapper {
                border-radius: 22px !important;
                padding: 2px 10px !important;
            }
            #message-input {
                font-size: 16px !important; /* 防止 iOS 自动缩放 */
                min-height: 24px;
                padding: 8px 0 !important;
                max-height: 120px !important;
            }
            .user-settings-dropdown {
                position: fixed !important;
                border-radius: 16px 16px 0 0 !important;
                max-height: 75vh !important;
                max-width: 100vw !important;
                padding: 12px;
                box-shadow: 0 -10px 30px rgba(0,0,0,0.15);
                bottom: 0 !important;
                left: 0 !important;
                right: 0 !important;
                overflow-y: auto !important;
                -webkit-overflow-scrolling: touch !important;
            }
            .user-profile-card.active .user-settings-dropdown { display: flex !important; animation: slideUpMobile 0.25s ease-out; }
            .settings-item {
                padding: 12px 14px;
                font-size: 14px;
                min-height: 44px;
            }
            .settings-item svg { width: 18px; height: 18px; }
            .about-header { padding: 10px 16px; }
            .about-main { padding: 0 16px 32px; }
            .about-hero { padding: 32px 0 24px; }
            .about-hero-title { font-size: 28px; }
            .about-card-grid { grid-template-columns: 1fr; }
            .about-intro-grid { grid-template-columns: 1fr; }
            .about-stats { gap: 20px; }
            .about-stat-value { font-size: 22px; }
            .about-feature-section-icon { font-size: 24px; }
            .about-feature-section-title { font-size: 16px; }
            .login-btn-primary {
                height: 30px;
                padding: 0 12px;
                font-size: 13px;
            }
            .sidebar-footer {
                border-top: none !important;
                padding-top: 4px !important;
            }
            .main-content {
                padding-top: env(safe-area-inset-top, 20px) !important;
                width: 100% !important;
                max-width: 100% !important;
                min-width: 100% !important;
                flex: 1 1 100% !important;
                position: relative !important;
                z-index: 1 !important;
                overflow: hidden !important;
            }
            .top-nav {
                padding: 0 10px !important;
                padding-top: calc(4px + env(safe-area-inset-top, 20px)) !important;
                height: 50px !important;
            }
            .content-wrapper { padding-top: calc(50px + env(safe-area-inset-top, 0px)) !important; }
            .top-right { gap: 4px !important; }
            .top-left { gap: 4px !important; }
            #login-btn {
                height: 28px !important;
                padding: 0 10px !important;
                font-size: 12px !important;
                margin-right: 4px !important;
            }
            .user-info-area { gap: 4px !important; }
            .username-display {
                font-size: 12px !important;
                max-width: 80px !important;
            }
            .logout-btn-subtle {
                font-size: 11px !important;
                padding: 2px 8px !important;
            }
            .user-profile-card { margin: 4px 4px calc(4px + var(--sab)) 4px !important; }
            .mobile-overlay.active { display: block; opacity: 1; }
            .app-grid {
                grid-template-columns: repeat(2, 1fr) !important;
                gap: 10px !important;
            }
            .app-card-thumb iframe { transform: scale(0.35) !important; }
            .app-page-header { padding: 12px 14px 0 !important; }
            .app-page-content { padding: 12px 14px !important; }
            .app-page-search { max-width: 100%; }
            .sidebar-theme-btn { display: flex; }
            .sidebar {
                position: fixed !important;
                inset: 0 80px 0 0 !important;
                width: 85vw !important;
                max-width: 320px !important;
                z-index: 10001 !important;
                transform: translateX(-100%) !important;
                margin-left: 0 !important;
                overscroll-behavior-x: contain;
                touch-action: pan-y;
            }
            .sidebar:not(.collapsed) { transform: translateX(0) !important; }
            .sidebar.collapsed {
                display: flex !important; /* 覆盖基础 CSS 的 display:none，移动端用 transform 动画 */
                transform: translateX(-100%) !important;
                margin-left: -85vw !important;
            }
            .mobile-overlay { z-index: 10000; }

            .send-btn {
                width: 40px !important;
                height: 40px !important;
                border-radius: 50% !important;
                flex-shrink: 0 !important;
                flex-grow: 0 !important;
                aspect-ratio: 1 !important;
            }
            .send-btn-wrapper {
                flex-shrink: 0 !important;
                flex-grow: 0 !important;
            }
            .input-tools-right {
                flex-shrink: 0 !important;
                flex-grow: 0 !important;
            }
            .attach-btn {
                width: 36px !important;
                height: 36px !important;
                border-radius: 50% !important;
                flex-shrink: 0 !important;
                flex-grow: 0 !important;
                aspect-ratio: 1 !important;
            }
            .toggle-sidebar-btn {
                width: 40px !important;
                height: 40px !important;
                border-radius: 8px !important;
                flex-shrink: 0 !important;
                flex-grow: 0 !important;
            }
            .model-trigger {
                border-radius: 8px !important;
                flex-shrink: 0 !important;
                flex-grow: 0 !important;
                font-size: 13px; font-weight: 500; padding: 6px 10px;
            }
            .message-row { padding: 8px 0 !important; }
            .code-wrapper { margin: 12px 0; }
            .chat-container { padding-bottom: 60px; }
            #profile-modal .modal-content {
                max-width: 100%;
                border-radius: 16px 16px 0 0;
                margin: auto 0 0 0;
                max-height: 90vh;
            }
            #profile-modal .modal-body { max-height: 70vh; }
            #profile-modal .modal-footer button { flex: 1; }
            #profile-modal .modal-footer {
                padding: 12px 16px calc(12px + var(--sab));
                gap: 12px;
            }
            #profile-modal .btn-cancel, #profile-modal .btn-save {
                padding: 14px 20px !important;
                font-size: 15px !important;
                text-align: center;
            }
            .api-key-link, #theme-toggle-btn { display: none !important; }
            .model-name-display { display: none !important; }
            .input-tools-left { gap: 5px !important; }
            .think-switch-btn, .search-switch-btn {
                padding: 0 !important;
                margin: 0 !important;
                min-width: unset !important;
                width: 34px !important;
                height: 34px !important;
                border: none !important;
                background: transparent !important;
                border-radius: 50% !important;
            }
            .font-switch-btn, .review-guard-btn, #agent-toggle-btn { display: none !important; }
            .mobile-more-tools-wrapper { display: block !important; }
            /* #coder-mode-btn — 移动端已启用 */
            
            /* 手机端 Coder 模式编辑器 — 已启用 */
            body.coder-mode #editor-overlay,
            body.coder-mode #editor-overlay.active,
            body.coder-mode #editor-overlay.coder-mode-active,
            body.coder-mode .editor-overlay,
            body.coder-mode .editor-overlay.active,
            body.coder-mode .editor-overlay.coder-mode-active {
                display: flex !important;
                visibility: visible !important;
                opacity: 1 !important;
                pointer-events: auto !important;
                position: fixed !important;
                left: 0 !important;
                top: 0 !important;
                width: 100vw !important;
                height: calc(100dvh - 50px - env(safe-area-inset-bottom, 0px)) !important;
                overflow: hidden !important;
                z-index: 2500 !important;
                flex-direction: column !important;
            }
            body.coder-mode #collapse-chat-btn { display: none !important; }
            .mobile-more-menu {
                display: none;
                position: absolute;
                bottom: calc(100% + 12px);
                left: -8px;
                background: var(--bg-main);
                border: 1px solid var(--border-color);
                border-radius: 14px;
                box-shadow: 0 4px 20px rgba(0,0,0,0.12);
                padding: 6px;
                z-index: 1000;
                min-width: 160px;
                flex-direction: column;
                gap: 2px;
            }
            .mobile-more-menu.show { display: flex; }
            .mobile-more-item {
                display: flex;
                align-items: center;
                gap: 10px;
                padding: 10px 14px;
                border-radius: 10px;
                font-size: 14px;
                color: var(--text-primary);
                cursor: pointer;
                transition: background 0.15s;
            }
            .mobile-more-item:hover, .mobile-more-item:active { background: var(--hover-bg); }
            .assistant-avatar { display: none !important; }
            .assistant-row .message-content {
                padding-left: 0 !important;
                margin-left: 0 !important;
            }
            #input-write-btn.active {
                background: rgba(59, 130, 246, 0.1) !important;
                color: var(--primary-color) !important;
            }
            .quick-review-menu {
                width: 280px !important;
                left: 50% !important;
                transform: translateX(-50%) !important;
                bottom: calc(100% + 16px) !important;
            }
            .review-layout {
                flex-direction: column !important;
                height: auto !important;
                max-height: calc(85vh - 60px) !important;
                overflow-y: auto !important;
            }
            .review-sidebar {
                width: 100% !important;
                height: 120px !important;
                border-right: none !important;
                border-bottom: 1px solid var(--border-color) !important;
                border-radius: 16px 16px 0 0 !important;
                flex-shrink: 0 !important;
            }
            .review-main {
                padding: 16px 12px 24px 12px !important;
                flex: none !important;
                height: auto !important;
            }
            .review-upload-zone {
                padding: 10px !important;
                margin-bottom: 10px !important;
            }
            .review-upload-zone svg { width: 18px!important; height: 18px!important; margin-bottom: 2px!important; }
            .review-upload-zone div { font-size: 12px!important; }
            #review-rules-input {
                padding: 12px !important;
                min-height: 120px !important;
                flex: none !important;
            }
            .review-footer { margin-top: 12px !important; }
            .review-footer button {
                padding: 0 16px !important;
                font-size: 13px !important;
                height: 38px !important;
            }
            .review-modal .manual-content {
                width: 95% !important;
                padding: 0 !important;
            }
            .writer-tools-toolbar {
                top: auto !important;
                z-index: 1 !important;
                width: 85% !important;
                max-width: 100vw !important;
                overflow: visible !important; /* Extremely important for dropdown to show */
                border: none !important;
                box-shadow: none !important;
                background: transparent !important;
                padding: 0 !important;
                gap: 2px !important;
                justify-content: center !important;
                flex-wrap: nowrap !important;
                bottom: 100% !important; /* Move it closer to the input box */
                margin-bottom: 8px !important;
            }
            .writer-tool-group { flex-shrink: 0; }
            .writer-dropdown-menu {
                bottom: calc(100% + 5px) !important; /* Bring tighter towards the button on mobile */
                width: max-content !important;
                max-width: none !important;
                left: 50% !important;
                transform: translateX(-50%) !important;
            }
            .writer-tool-btn {
                padding: 4px 6px !important;
                font-size: 13px !important;
                white-space: nowrap !important;
                border: none !important;
                background: transparent !important;
                box-shadow: none !important;
                color: var(--text-primary) !important;
                display: flex !important;
                align-items: center !important;
                gap: 4px !important;
            }
            .writer-tool-btn span { white-space: nowrap !important; }
            .writer-tool-btn svg { width: 14px !important; height: 14px !important; }
            .review-sidebar > div:first-child { display: none !important; /* 手机端暂时隐藏侧边栏的单独新建按钮以腾出位置排满标签，可以通过主界面外部添加，或者缩为一个图标 */ }
            .review-skill-group-title { display: none !important; }
            .review-skill-list {
                display: flex !important;
                flex-wrap: wrap !important;
                gap: 6px !important;
                padding: 12px !important;
                align-content: flex-start !important;
            }
            .review-skill-item {
                padding: 6px 12px !important;
                border-radius: 16px !important;
                margin-bottom: 0 !important;
                width: auto !important;
                display: inline-flex !important;
                align-items: center !important;
            }
            .review-skill-name {
                margin-bottom: 0 !important;
                font-size: 13px !important;
                white-space: nowrap !important;
            }
            .review-skill-desc { display: none !important; }
            .scroll-btn {
                left: auto !important;
                right: 12px !important;
                transform: none !important;
                z-index: 1000 !important; /* 调整层级到最前 */
                bottom: calc(100% + 16px + var(--sab));
                width: 36px;
                height: 36px;
            }
            .message-row.user-row .bubble {
                font-size: 14px !important;
                background-color: #2563eb !important;
                color: #ffffff !important;
                padding: 10px 14px !important;
            }
            .markdown-body { font-size: 14px !important; }
            .welcome-text h1 { font-size: 20px !important; }
            .welcome-text p { font-size: 14px !important; }
            .welcome-logo { width: 60px !important; height: 60px !important; }
            .nav-item {
                font-size: 13px !important; padding: 8px 10px !important;
                padding: 12px 10px;
            }
            .user-name-text { font-size: 13px !important; }
            .user-plan-text { font-size: 11px !important; }
            .message-row.user-row .bubble .user-text-content,
            .message-row.user-row .bubble .markdown-body,
            .message-row.user-row .bubble .markdown-body p { color: #ffffff !important; }
            .message-row.user-row .bubble .markdown-body a {
                color: #bfdbfe !important;
                text-decoration: underline !important;
            }
            .message-row.user-row .bubble .markdown-body code {
                background: rgba(255,255,255,0.18) !important;
                color: #e0e7ff !important;
                padding: 1px 5px;
                border-radius: 4px;
            }
            .message-row.user-row .bubble .markdown-body pre code {
                background: rgba(0,0,0,0.2) !important;
                color: #f0f0f0 !important;
                display: block;
                padding: 8px;
            }
            .assistant-row .action-bar {
                display: flex !important;
                opacity: 1 !important;
                visibility: visible !important;
                gap: 5px !important;
                margin-top: 8px !important;
                align-items: center !important;
            }
            .assistant-row .action-bar .action-btn {
                width: 30px !important; /* 进一步优化紧凑型图标布局 */
                height: 30px !important;
                background: transparent !important;
                border: none !important;
                color: var(--text-tertiary) !important;
                opacity: 0.8;
                padding: 4px !important; /* 减小内边距，使图标间距感更接近视觉 5px */
            }
            .assistant-row .msg-footer {
                margin-left: 0 !important;
                gap: 5px !important;
            }
            .assistant-row .msg-footer-item {
                gap: 5px !important; /* 统一所有图标与元素间距为5px */
                min-width: 40px !important;
                min-height: 38px !important;
                padding: 6px !important;
            }
            .user-row .action-bar { display: none !important; }
            .model-trigger .chevron-icon { width: 11px; height: 11px; stroke-width: 1.5; }
            .model-selector {
                font-size: 15px !important;
                padding: 6px 24px 6px 8px !important;
            }
            .user-profile { padding: 12px 10px; }
            .history-item-wrapper .nav-item {
                position: relative;
                z-index: 2;
                transition: transform 0.25s ease;
                background: var(--bg-sidebar);
                width: 100%;
            }
            .history-item-wrapper .history-item-actions {
                display: flex !important; /* 强制预渲染以确保滑动立现 */
                position: absolute;
                right: 0;
                top: 0;
                bottom: 0;
                width: 80px;
                height: 100%;
                background-color: var(--error-color) !important; /* 大红色背景 */
                color: #ffffff !important;
                border-radius: 0 8px 8px 0;
                z-index: 1;
                justify-content: center;
                align-items: center;
                border: none;
                opacity: 0;
                transition: opacity 0.1s;
            }
            .history-item-wrapper .history-item-actions .action-icon-btn { color: #fff; width: 30px; }
            .history-item-wrapper .history-item-actions .action-icon-btn:hover { background: transparent; }
            .history-item-wrapper .history-item-actions svg { width: 16px; height: 16px; stroke: #ffffff !important; }
            .history-item-wrapper.swiped .nav-item { transform: translateX(-80px); }
            .history-item-wrapper.swiped .history-item-actions { opacity: 1; /* 滑动后清晰呈现 */; }
            .archive-item {
                display: flex;
                justify-content: space-between;
                align-items: center;
                padding: 12px 16px;
                background: var(--bg-secondary);
                border-radius: 8px;
                margin-bottom: 10px;
                transition: background 0.2s;
            }
            .archive-item:hover { background: var(--bg-hover); }
            .archive-item-info {
                flex: 1;
                overflow: hidden;
            }
            .archive-item-title {
                font-weight: 500;
                color: var(--text-primary);
                margin-bottom: 4px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }
            .archive-item-date {
                font-size: 12px;
                color: var(--text-secondary);
            }
            .archive-item-actions {
                display: flex;
                gap: 8px;
                margin-left: 16px;
            }
            .archive-action-btn {
                background: transparent;
                border: none;
                color: var(--text-secondary);
                cursor: pointer;
                padding: 6px;
                border-radius: 6px;
                transition: all 0.2s;
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .archive-action-btn:hover {
                background: var(--bg-hover);
                color: var(--primary-color);
            }
            .archive-action-btn.delete-btn:hover { color: var(--error-color); }
            #archive-list {
                max-height: 400px;
                overflow-y: auto;
                padding-right: 4px;
            }
            #archive-list::-webkit-scrollbar { width: 4px; }
            #archive-list::-webkit-scrollbar-thumb {
                background: var(--border-color);
                border-radius: 2px;
            }
            .sidebar-header, .sidebar-nav { transition: transform 0.3s ease, opacity 0.3s ease, margin-top 0.3s ease; }
            .sidebar.header-hidden .sidebar-header {
                transform: translateY(-20px);
                opacity: 0;
                pointer-events: none;
                margin-top: -40px;
                height: 0;
                margin-bottom: 0;
                padding: 0;
                overflow: hidden;
            }
            .voice-selection-content {
                width: 100%;
                max-width: 100%;
                height: 100%;
                max-height: 100%;
                border-radius: 0;
            }
            .voice-selection-header h3 { margin: 0; }
            .voice-selection-footer {
                padding: 16px;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                background: #fff;
                z-index: 10;
            }
            .voice-footer-btn-confirm { flex: 1; }
            .voice-footer-btn-cancel { display: none; }
            .voice-selection-header { padding: 16px 20px; }
            .voice-selection-search-bar { padding: 12px 20px; }
            .voice-list-container { padding: 0 20px 100px; }
            body.coder-mode #chat-editor-resizer { display: none !important; }
            .code-actions { gap: 6px; }
            .code-action-btn {
                width: 44px !important;
                height: 44px !important;
                border-radius: 10px !important;
            }
            .code-action-btn svg { width: 20px !important; height: 20px !important; }
            .code-header { padding: 8px 10px; }
            .code-lang { font-size: 12px; gap: 4px; }
            .code-lang svg { width: 12px; height: 12px; }
            .msg-footer { gap: 10px !important; }
            .msg-footer-item {
                min-width: 44px !important;
                min-height: 44px !important;
                display: flex !important;
                align-items: center !important;
                justify-content: center !important;
                gap: 6px !important;
            }
            .msg-footer-item svg { width: 18px !important; height: 18px !important; }
            #toast-message {
                top: 50%; transform: translate(-50%, -50%);
                max-width: calc(100vw - 32px);
                white-space: normal;
                text-align: center;
            }
            /* ===== 手机端 Coder 模式 UI 重构 ===== */
            
            /* 默认：只显示代码编辑器面板，其他面板通过底部 tab 切换 */
            body.coder-mode .editor-main { flex: 1; min-height: 0; height: 0; }
            body.coder-mode .editor-overlay .file-tree-pane { display: none !important; }
            body.coder-mode .editor-overlay .editor-pane { flex: 1; width: 100% !important; height: 0 !important; }
            body.coder-mode .editor-overlay .preview-pane { display: none !important; }
            body.coder-mode .editor-overlay .terminal-pane { display: none !important; }
            body.coder-mode .editor-overlay .editor-tabs { display: flex !important; overflow-x: auto; -webkit-overflow-scrolling: touch; }
            body.coder-mode .editor-overlay .resizer { display: none !important; }
            body.coder-mode #chat-editor-resizer { display: none !important; }
            
            /* Tab 切换时面板显示控制 */
            body.coder-mode.mobile-pane-files .editor-overlay .file-tree-pane { display: flex !important; width: 100% !important; height: 100% !important; }
            body.coder-mode.mobile-pane-files .editor-overlay .editor-pane { display: none !important; }
            body.coder-mode.mobile-pane-files .editor-overlay .preview-pane { display: none !important; }
            body.coder-mode.mobile-pane-code .editor-overlay .editor-pane { display: flex !important; flex: 1 !important; width: 100% !important; height: 100% !important; }
            body.coder-mode.mobile-pane-code .editor-overlay .file-tree-pane { display: none !important; }
            body.coder-mode.mobile-pane-code .editor-overlay .preview-pane { display: none !important; }
            body.coder-mode.mobile-pane-preview .editor-overlay .preview-pane { display: flex !important; width: 100% !important; height: 100% !important; }
            body.coder-mode.mobile-pane-preview .editor-overlay .editor-pane { display: none !important; }
            body.coder-mode.mobile-pane-preview .editor-overlay .file-tree-pane { display: none !important; }
            body.coder-mode.mobile-pane-version .editor-overlay .editor-pane { display: none !important; }
            body.coder-mode.mobile-pane-version .editor-overlay .file-tree-pane { display: none !important; }
            body.coder-mode.mobile-pane-version .editor-overlay .preview-pane { display: none !important; }
            /* 对话页面时隐藏所有编辑器面板 */
            body.coder-mode.mobile-pane-chat .editor-overlay { display: none !important; }
            
            /* 顶部栏精简 */
            body.coder-mode .editor-top-bar {
                height: 44px !important;
                padding: 0 6px !important;
                margin-top: 0 !important;
                gap: 0;
            }
            body.coder-mode .editor-top-left { gap: 0 !important; flex: 1; min-width: 0; overflow-x: auto; overflow-y: hidden; scrollbar-width: none; }
            body.coder-mode .editor-top-left::-webkit-scrollbar { display: none; }
            body.coder-mode .editor-top-right { gap: 0 !important; flex-shrink: 0; margin-left: auto !important; display: flex !important; align-items: center !important; padding-right: 47px !important; }
            /* 手机端三点菜单按钮 — 覆盖桌面端 hidden */
            body.coder-mode #ide-more-btn {
                display: flex !important;
                flex-shrink: 0 !important;
                width: 36px !important; height: 36px !important;
                border-radius: 50% !important;
                min-width: 36px !important;
            }
            /* 手机端模型选择器 — 使用 coder-model-selector 统一 */
            body.coder-mode #coder-model-selector { display: block !important; }
            body.coder-mode .coder-model-btn { padding: 2px 6px !important; font-size: 10px !important; }
            #coder-model-selector-name { max-width: 50px !important; }
            /* 退回按钮 — 固定右上角 */
            body.coder-mode #ide-close-coder-btn {
                position: fixed !important;
                top: 6px !important;
                right: 6px !important;
                z-index: 2600 !important;
                width: 32px !important;
                height: 32px !important;
                border-radius: 50% !important;
                margin: 0 !important;
                flex-shrink: 0 !important;
            }
            /* 设备工具栏缩短 */
            body.coder-mode .browser-toolbar {
                max-width: 140px !important;
            }
            body.coder-mode #current-device-text {
                max-width: 36px !important;
            }
            /* 编程模式三点菜单面板 */
            .coder-more-panel-overlay {
                position: fixed; top: 0; left: 0; right: 0; bottom: 0;
                background: rgba(0,0,0,0.4); z-index: 9999;
            }
            .coder-more-panel-body {
                position: fixed; left: 10px; top: 50px;
                background: var(--bg-main); border-radius: 12px;
                box-shadow: 0 4px 24px rgba(0,0,0,0.15); z-index: 10000;
                min-width: 180px; overflow: hidden;
            }
            .coder-more-item {
                display: flex; align-items: center; gap: 10px;
                padding: 12px 16px; cursor: pointer; transition: background 0.15s;
                font-size: 14px; color: var(--text-primary);
            }
            .coder-more-item:hover, .coder-more-item:active { background: var(--hover-bg); }
            .coder-more-item svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--text-secondary); }
            .coder-more-item span { flex: 1; }
            
            /* 手机端隐藏顶部栏中不需要的按钮 */
            body.coder-mode .editor-top-bar #toggle-preview-btn { display: none !important; }
            body.coder-mode .editor-top-bar #ide-mode-tabs,
            body.coder-mode #ide-mode-tabs { display: none !important; }
            body.coder-mode .editor-top-bar .browser-toolbar { display: flex !important; }
            body.coder-mode .editor-top-bar .old-action-btn { display: none !important; }
            body.coder-mode .editor-top-bar #expand-chat-btn { display: none !important; }
            body.coder-mode .editor-top-bar #editor-run-sandbox-btn { font-size: 12px !important; padding: 0 8px !important; }
            body.coder-mode .editor-top-bar .ide-tab-btn[title="使用说明"] { display: none !important; }
            
            /* 手机端隐藏电脑版直接展示的按钮（这些在手机端三点菜单中） */
            body.coder-mode #ide-undo-btn { display: none !important; }
            body.coder-mode #ide-redo-btn { display: none !important; }
            body.coder-mode #ide-refresh-btn { display: none !important; }
            body.coder-mode #ide-ref-btn { display: none !important; }
            body.coder-mode #ide-save-btn { display: none !important; }
            body.coder-mode #ide-download-btn { display: none !important; }
            
            /* 手机端右侧按钮更紧凑 */
            body.coder-mode .editor-top-right .ide-action-btn,
            body.coder-mode .editor-top-right .ide-icon-btn {
                min-width: 28px !important;
                width: 28px !important;
                height: 28px !important;
                padding: 0 !important;
                margin: 0 !important;
                border-radius: 4px !important;
            }
            body.coder-mode .editor-top-right .ide-action-btn svg,
            body.coder-mode .editor-top-right .ide-icon-btn svg {
                width: 14px !important;
                height: 14px !important;
            }
            /* 手机端隐藏使用说明（框内已有） */
            body.coder-mode .editor-top-right .ide-tab-btn { display: none !important; }
            
            /* 编辑器 textarea 字体和间距 — 手机端必须保证 textarea 与 highlight 完全一致 */
            body.coder-mode #editor-textarea {
                font-size: 16px !important;
                line-height: 26px !important;
                padding: 12px !important;
                font-family: 'Fira Code', Consolas, Monaco, 'Courier New', monospace !important;
                white-space: pre !important;
                word-wrap: normal !important;
                overflow-wrap: normal !important;
                tab-size: 4 !important;
                letter-spacing: normal !important;
                word-spacing: normal !important;
                -webkit-text-size-adjust: none !important;
                text-size-adjust: none !important;
                font-variant-ligatures: none !important;
                font-feature-settings: normal !important;
                border: none !important;
                margin: 0 !important;
                -webkit-appearance: none !important;
                appearance: none !important;
                -webkit-rtl-ordering: logical !important;
                resize: none !important;
                outline: none !important;
                -webkit-text-fill-color: initial !important;
                background: #f6f8fa !important;
                color: #24292e !important;
                text-rendering: optimizeSpeed !important;
            }
            body.coder-mode #editor-textarea::selection {
                background: rgba(59, 130, 246, 0.35) !important;
            }
            :root[data-theme="dark"] body.coder-mode #editor-textarea {
                -webkit-text-fill-color: #c9d1d9 !important;
                background: #0d1117 !important;
                color: #c9d1d9 !important;
                caret-color: #fff !important;
            }
            :root[data-theme="dark"] body.coder-mode #editor-textarea::selection {
                background: rgba(59, 130, 246, 0.4) !important;
            }
            /* 手机端代码高亮层与 textarea 必须像素级一致 */
            body.coder-mode #editor-highlight {
                font-size: 16px !important;
                line-height: 26px !important;
                padding: 12px !important;
                font-family: 'Fira Code', Consolas, Monaco, 'Courier New', monospace !important;
                white-space: pre !important;
                word-wrap: normal !important;
                overflow-wrap: normal !important;
                tab-size: 4 !important;
                letter-spacing: normal !important;
                word-spacing: normal !important;
                -webkit-text-size-adjust: none !important;
                text-size-adjust: none !important;
                font-variant-ligatures: none !important;
                font-feature-settings: normal !important;
                border: none !important;
                margin: 0 !important;
                text-rendering: optimizeSpeed !important;
            }
            /* code 元素继承 pre 的所有字体属性，不能有自己的 padding/margin */
            /* 手机端 hljs span 不能改变字体度量 */
            body.coder-mode #editor-highlight code span,
            body.coder-mode #editor-highlight code.hljs span {
                font-size: inherit !important;
                line-height: inherit !important;
                font-family: inherit !important;
                letter-spacing: inherit !important;
                word-spacing: inherit !important;
                font-variant-ligatures: inherit !important;
            }
            body.coder-mode #editor-highlight code,
            body.coder-mode #editor-highlight code.hljs {
                font-size: inherit !important;
                line-height: inherit !important;
                font-family: inherit !important;
                white-space: inherit !important;
                word-wrap: inherit !important;
                overflow-wrap: inherit !important;
                tab-size: inherit !important;
                letter-spacing: inherit !important;
                word-spacing: inherit !important;
                font-variant-ligatures: inherit !important;
                font-feature-settings: inherit !important;
                padding: 0 !important;
                margin: 0 !important;
                border: none !important;
                background: transparent !important;
            }
            body.coder-mode .editor-tabs {
                height: 36px !important;
            }
            body.coder-mode .editor-tab {
                padding: 4px 8px !important;
                font-size: 12px !important;
                min-width: auto !important;
                gap: 4px !important;
            }
            /* 手机端 tab 图标尺寸 */
            body.coder-mode .editor-tab > span:first-child {
                width: 12px !important;
                height: 12px !important;
                flex-shrink: 0;
            }
            body.coder-mode .editor-tab > span:first-child svg {
                width: 100% !important;
                height: 100% !important;
            }
            /* 手机端隐藏编辑器内浮动按钮（保存/复制），避免遮挡代码编辑区域 */
            body.coder-mode .editor-pane .editor-copy-btn { display: none !important; }
            /* 手机端 textarea-wrapper 不裁切内容，确保触摸事件正常传递 */
            body.coder-mode .editor-textarea-wrapper { overflow: visible !important; }
            /* 手机端 editor-container 确保不遮挡 textarea */
            body.coder-mode .editor-container { overflow: hidden !important; position: relative !important; }
            body.coder-mode .line-numbers {
                font-size: 11px !important;
                line-height: 26px !important;
                padding: 12px 4px !important;
                width: 28px !important;
                min-width: 28px !important;
                pointer-events: none !important;
                font-family: 'Fira Code', Consolas, Monaco, 'Courier New', monospace !important;
            }
            
            /* 底部切换栏 */
            body.coder-mode .coder-mobile-tabs {
                display: flex !important;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                z-index: 2600;
                background: var(--bg-main, #fff);
                border-top: none;
                padding: 0;
                padding-bottom: env(safe-area-inset-bottom, 0px);
                height: calc(50px + env(safe-area-inset-bottom, 0px));
            }
            .coder-mobile-tab {
                flex: 1;
                display: flex;
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 2px;
                font-size: 11px;
                color: var(--text-secondary);
                background: transparent;
                border: none;
                cursor: pointer;
                transition: 0.2s;
                height: 50px;
                position: relative;
            }
            .coder-mobile-tab.active {
                color: var(--primary-color);
                font-weight: 600;
            }
            .coder-mobile-tab.active::after {
                content: '';
                position: absolute;
                top: 0;
                left: 50%;
                transform: translateX(-50%);
                width: 24px;
                height: 2px;
                background: var(--primary-color);
                border-radius: 1px;
            }
            .coder-mobile-tab svg { width: 20px; height: 20px; }
            
            /* 编辑器面板切换过渡动画 */
            body.coder-mode .editor-overlay .file-tree-pane,
            body.coder-mode .editor-overlay .editor-pane,
            body.coder-mode .editor-overlay .preview-pane {
                transition: opacity 0.2s ease, transform 0.2s ease;
            }
            body.coder-mode .editor-overlay .file-tree-pane[style*="display: flex"],
            body.coder-mode .editor-overlay .editor-pane[style*="display: flex"],
            body.coder-mode .editor-overlay .preview-pane[style*="display: flex"] {
                animation: fadeSlideIn 0.2s ease;
            }
            @keyframes fadeSlideIn {
                from { opacity: 0; transform: translateX(8px); }
                to { opacity: 1; transform: translateX(0); }
            }
            
            /* 手机端 Coder 模式：隐藏对话区和顶栏（输入框方案待定） */
            body.coder-mode .chat-container { display: none !important; }
            body.coder-mode .top-nav { display: none !important; }
            body.coder-mode .writer-tools-toolbar { display: none !important; }
            /* 手机端编程模式强制收起侧边栏 */
            body.coder-mode .sidebar { margin-left: -260px !important; position: fixed !important; z-index: 0 !important; }
            /* 手机端 Coder 模式输入框固定在底部 tab 栏上方 */
            /* 手机端编程模式：隐藏输入框区域 */
            /* 输入框由下方统一规则控制 */
            
            /* 文件树手机端全宽 */
            body.coder-mode .editor-overlay .file-tree-pane .file-tree-header { padding: 8px; }
            body.coder-mode .editor-overlay .file-tree-pane .file-tree-content { padding: 4px; }
            
            /* 手机端预览区 - 仅在预览 Tab 下显示设备尺寸模拟 */
            body.coder-mode.mobile-pane-preview .editor-overlay .preview-pane {
                display: flex !important;
                align-items: center !important;
                justify-content: center !important;
                background: #1a1a2e !important;
            }
            /* desktop 设备：全宽 */
            body.coder-mode.mobile-pane-preview .editor-overlay .preview-pane.device-desktop .preview-container,
            body.coder-mode.mobile-pane-preview .editor-overlay .preview-pane:not(.device-mobile):not(.device-tablet) .preview-container { 
                width: 100% !important; height: 100% !important; border-radius: 0 !important; border: none !important;
            }
            /* 手机设备模拟：竖屏 375×812, 横屏 812×375 */
            body.coder-mode.mobile-pane-preview .editor-overlay .preview-pane.device-mobile .preview-container {
                width: 375px !important; height: 812px !important;
                max-width: 95vw !important; max-height: 85vh !important;
                border-radius: 36px !important; border: 8px solid #222 !important;
            }
            body.coder-mode.mobile-pane-preview .editor-overlay .preview-pane.device-mobile.landscape-preview .preview-container {
                width: 812px !important; height: 375px !important;
                max-width: 95vw !important; max-height: 85vh !important;
                border-radius: 28px !important; border: 8px solid #222 !important;
            }
            /* 平板设备模拟：竖屏 768×1024, 横屏 1024×768 */
            body.coder-mode.mobile-pane-preview .editor-overlay .preview-pane.device-tablet .preview-container {
                width: 768px !important; height: 1024px !important;
                max-width: 95vw !important; max-height: 85vh !important;
                border-radius: 24px !important; border: 8px solid #222 !important;
            }
            body.coder-mode.mobile-pane-preview .editor-overlay .preview-pane.device-tablet.landscape-preview .preview-container {
                width: 1024px !important; height: 768px !important;
                max-width: 95vw !important; max-height: 85vh !important;
                border-radius: 18px !important; border: 8px solid #222 !important;
            }
            
            /* 版本面板手机端适配 — 充满画布 */
            body.coder-mode .version-panel,
            body.coder-mode .editor-overlay .version-panel {
                position: fixed !important;
                left: 0 !important;
                right: 0 !important;
                top: 0 !important;
                bottom: 0 !important;
                width: 100% !important;
                max-width: 100% !important;
                max-height: 100vh !important;
                max-height: 100dvh !important;
                border-radius: 0 !important;
                border-left: none !important;
                z-index: 2700 !important;
                box-shadow: none !important;
                display: none !important;
                padding-top: env(safe-area-inset-top, 0px) !important;
            }
            body.coder-mode.mobile-pane-version .version-panel,
            body.coder-mode.mobile-pane-version .editor-overlay .version-panel {
                display: flex !important;
            }
            .version-panel-header { padding: 14px 16px !important; }
            .version-panel-title { font-size: 14px !important; }
            .version-panel-actions { padding: 8px 16px !important; }
            .version-save-btn { font-size: 13px !important; padding: 6px 14px !important; }
            .version-item { padding: 10px 16px !important; }
            .version-item-info { font-size: 12px !important; }
            .version-item-actions button { font-size: 11px !important; padding: 4px 8px !important; }
            /* 手机端版本卡片操作按钮：小屏下更紧凑 */
            .version-card-actions { gap: 6px !important; }
            .version-card-btn { font-size: 12px !important; padding: 4px 10px !important; }
            .version-card-btn svg { width: 13px !important; height: 13px !important; }
            .version-empty { padding: 24px 16px !important; }
            .version-empty p { font-size: 14px !important; }
            .version-empty span { font-size: 12px !important; }
            
            /* 对话面板手机端全屏 */

            .history-list {
                overscroll-behavior-x: contain;
                touch-action: pan-y;
            }
            body.writer-mode-active .writer-overlay {
                position: fixed !important;
                left: 0 !important;
                right: 0 !important;
                top: env(safe-area-inset-top, 0px) !important;
                bottom: env(safe-area-inset-bottom, 0px) !important;
                width: 100% !important;
                z-index: 1500 !important;
                padding-top: 0 !important;
            }
            body.writer-mode-active .main-content {
                width: 100vw !important;
                min-width: unset !important;
            }
            body.writer-mode-active .writer-top-bar {
                padding: 8px 12px;
                padding-top: calc(8px + env(safe-area-inset-top, 0px));
            }
            body.writer-mode-active .writer-close-btn {
                width: 44px !important;
                height: 44px !important;
                border-radius: 12px !important;
                background: var(--hover-bg) !important;
                display: flex !important;
                align-items: center;
                justify-content: center;
            }
            body.writer-mode-active .writer-close-btn svg {
                width: 22px !important;
                height: 22px !important;
            }
            body.writer-mode-active .writer-back-btn { display: flex !important; }
            body.writer-mode-active .writer-content-area {
                padding: 0 12px 48px;
                padding-bottom: calc(48px + env(safe-area-inset-bottom, 0px));
            }
            #model-plaza-modal {
                align-items: center !important;
                justify-content: center !important;
            }
            #model-plaza-modal .plaza-modal-wrapper {
                width: 100% !important;
                max-width: 100% !important;
                max-height: 100% !important;
                height: 100% !important;
                border-radius: 0 !important;
                position: relative !important;
                bottom: auto !important;
            }
            #plaza-vendor-tabs { display: none !important; }
            #plaza-vendor-select { display: block !important; }
            #model-plaza-modal .plaza-modal-wrapper > div:nth-child(2) {
                padding: 8px 14px;
                gap: 6px;
            }
            #plaza-search-input {
                font-size: 14px;
                padding: 8px 12px;
                border-radius: 8px;
            }
            #plaza-model-list {
                padding: 6px 14px 12px;
                max-height: none !important;
                flex: 1 !important;
                overflow-y: auto !important;
            }
            #model-plaza-modal .plaza-model-card {
                padding: 10px 12px;
                margin-bottom: 4px;
                min-height: 48px;
                border-radius: 8px;
                gap: 10px;
            }
            #model-plaza-modal .plaza-model-name { font-size: 14px; }
            #model-plaza-modal .plaza-model-card .plaza-check {
                width: 22px;
                height: 22px;
                border-radius: 6px;
            }
            #model-plaza-modal .plaza-modal-wrapper > div:first-child { padding: 12px 14px; }
            #model-plaza-modal .plaza-modal-wrapper > div:first-child h3 { font-size: 17px; }
            #model-plaza-modal .plaza-modal-wrapper > div:last-child { padding: 10px 14px; }
            #model-plaza-modal .plaza-modal-wrapper > div:last-child button:first-child {
                border-color: #ccc;
                color: #555;
            }
            #model-plaza-modal .plaza-modal-wrapper > div:last-child button:last-child {
                background: #111;
                color: #fff;
                font-weight: 600;
            }
            .app-page-title {
                font-size: 18px !important;
                margin-bottom: 10px !important;
            }
            .app-page-search input {
                padding: 9px 40px 9px 14px !important;
                font-size: 13px !important;
            }
            .app-tab {
                padding: 8px 14px !important;
                font-size: 13px !important;
            }
            .model-item { padding: 10px 12px !important; }
            .model-item-title { font-size: 13px !important; }
            .agent-step-card {
                padding: 10px 12px !important;
                margin: 6px 0 !important;
                border-radius: 10px !important;
            }
            .agent-step-header { font-size: 13px !important; }
            .agent-step-code {
                font-size: 11px !important;
                padding: 8px !important;
                max-height: 150px !important;
            }
            .agent-step-desc { font-size: 11px !important; }
            .message-bubble {
                max-width: 92vw !important;
                padding: 10px 14px !important;
                font-size: 14px !important;
            }
            .markdown-body pre {
                font-size: 12px !important;
                padding: 10px !important;
            }
            .markdown-body code { font-size: 12px !important; }
            .thinking-wrapper { margin: 4px 0 !important; }
            .thinking-header { padding: 8px 12px !important; }
            .thinking-content {
                padding: 8px 12px !important;
                font-size: 12px !important;
            }
            .cloud-asset-card { padding: 10px !important; }
            .cloud-asset-name { font-size: 12px !important; }
            .cloud-asset-meta { font-size: 10px !important; }
            .empty-welcome { padding: 20px 16px !important; }
            .welcome-title { font-size: 22px !important; }
            .welcome-desc { font-size: 14px !important; }
            .guess-questions { padding: 0 8px !important; }
            .guess-item {
                padding: 10px 12px !important;
                font-size: 13px !important;
            }
            .action-bar { gap: 2px !important; }
            .action-btn {
                width: 28px !important;
                height: 28px !important;
            }
            #writer-resizer { display: none !important; }
            .writer-overlay { display: none !important; }
            body.writer-mode-active .chat-container { max-width: 100% !important; }
            body.writer-mode-active .input-box-wrapper { margin-right: 0 !important; }
            body.coder-mode .coder-mobile-tabs { display: flex !important; }
            .cp-modal {
                width: 95vw !important;
                max-height: 85vh !important;
            }
            .cp-form-group input,
    .cp-form-group textarea { font-size: 14px !important; }
            /* 触摸友好最小高度 — 仅限导航和列表项，排除内联圆形按钮 */
            .nav-item, .model-item, .settings-item { min-height: 44px; }
            .message-content { padding: 0 16px !important; }
            .voice-overlay, .video-overlay { padding: 0 !important; }
            .voice-overlay .gradient-circle {
                width: 200px !important;
                height: 200px !important;
            }
            .voice-overlay .status-area { margin-top: 60px !important; }
            .modal-content {
                width: 92vw !important;
                padding: 24px !important;
                border-radius: 14px !important;
            }
            .modal-content h3 { font-size: 20px !important; }
            .modal-content input {
                font-size: 15px !important;
                padding: 12px 14px !important;
                min-height: 44px !important;
            }
            .btn-submit-full {
                min-height: 46px !important;
                font-size: 15px !important;
            }
            .meeting-container { padding: 0 8px !important; }
            .meeting-msg { max-width: 95% !important; }
            .meeting-msg .msg-avatar {
                width: 28px !important;
                height: 28px !important;
                font-size: 12px !important;
            }
            .meeting-msg .msg-content {
                font-size: 13px !important;
                padding: 6px 10px !important;
            }
            .meeting-input {
                font-size: 15px !important;
                padding: 8px 40px 8px 14px !important;
            }
            .multi-response-header {
                padding: 6px 10px !important;
                font-size: 12px !important;
            }
            .compare-models-bar {
                padding: 4px 8px 4px 18px !important;
                gap: 4px 6px !important;
                overflow-x: visible !important;
                flex-wrap: wrap !important;
                margin-top: -50px !important;
            }
            .compare-model-tag {
                font-size: 11px !important;
                padding: 3px 10px !important;
                min-height: auto !important;
                border-radius: 14px !important;
                white-space: nowrap !important;
                flex-shrink: 0 !important;
            }
            .action-btn svg {
                width: 14px !important;
                height: 14px !important;
            }
            body { overflow-x: hidden !important; }
            * { max-width: 100vw; } #ace-editor *, #ace-editor div { max-width: none !important; }
            #editor-overlay,
    #editor-overlay.active,
    #editor-overlay.coder-mode-active,
    .editor-overlay,
    .editor-overlay.active,
    .editor-overlay.coder-mode-active {
                display: none !important;
                visibility: hidden !important;
                opacity: 0 !important;
                pointer-events: none !important;
                position: absolute !important;
                left: -9999px !important;
                top: -9999px !important;
                width: 0 !important;
                height: 0 !important;
                overflow: hidden !important;
                z-index: -1 !important;
            }
            /* 编程模式例外：显示编辑器 */
            body.coder-mode #editor-overlay,
            body.coder-mode #editor-overlay.active,
            body.coder-mode #editor-overlay.coder-mode-active,
            body.coder-mode .editor-overlay,
            body.coder-mode .editor-overlay.active,
            body.coder-mode .editor-overlay.coder-mode-active {
                display: flex !important;
                visibility: visible !important;
                opacity: 1 !important;
                pointer-events: auto !important;
                position: fixed !important;
                left: 0 !important;
                right: 0 !important;
                top: 0 !important;
                width: 100% !important;
                height: calc(100dvh - 50px - env(safe-area-inset-bottom, 0px)) !important;
                z-index: 1000 !important;
                overflow: hidden !important;
                flex-direction: column !important;
            }
            #writer-overlay,
    .writer-overlay,
    body.writer-mode-active #writer-overlay,
    body.writer-mode-active .writer-overlay {
                display: none !important;
                visibility: hidden !important;
                opacity: 0 !important;
                pointer-events: none !important;
            }
            /* 编程模式：隐藏对话区域 */
            body.coder-mode .main-content {
                display: none !important;
            }
            @keyframes slideUpMobile {
            from { opacity: 0; transform: translateY(100%); }
            to { opacity: 1; transform: translateY(0); }
            }

            /* ============================================= */
            /* ===  Gemini 风格移动端 UI 重构 (Phase 2)  === */
            /* ============================================= */

            /* --- 1. 顶栏：简洁三段式布局 --- */
            .top-nav {
                display: flex !important;
                align-items: center !important;
                justify-content: space-between !important;
                height: 48px !important;
                padding: 0 12px !important;
                padding-top: env(safe-area-inset-top, 0px) !important;
                background: var(--bg-main) !important;
                position: sticky !important;
                top: 0 !important;
                z-index: 100 !important;
            }
            .top-left {
                display: flex !important;
                align-items: center !important;
                gap: 4px !important;
                flex-shrink: 0 !important;
            }
            /* compare-bar 已移入 model-menu 内部 */
            .model-trigger {
                font-size: 15px !important;
                font-weight: 600 !important;
                padding: 6px 8px !important;
                border-radius: 8px !important;
                max-width: 180px !important;
                overflow: hidden !important;
                text-overflow: ellipsis !important;
                white-space: nowrap !important;
            }
            #current-model-display {
                font-size: 15px !important;
                max-width: 140px !important;
                overflow: hidden !important;
                text-overflow: ellipsis !important;
                white-space: nowrap !important;
                display: inline-block !important;
            }
            .model-trigger .chevron-icon {
                width: 12px !important;
                height: 12px !important;
                flex-shrink: 0 !important;
            }
            .top-right {
                display: flex !important;
                align-items: center !important;
                gap: 4px !important;
                flex-shrink: 0 !important;
            }
            .top-right .api-key-link,
            .top-right #theme-toggle-btn,
            .top-right #login-btn,
            .top-right #user-info-area,
            .top-right #collapse-chat-btn,
            .top-right #skills-top-actions,
            .top-right #kb-top-actions,
            .top-right #cloud-top-actions { display: none !important; }
            .new-chat-top-btn {
                display: flex !important;
                width: 40px !important;
                height: 40px !important;
                border-radius: 50% !important;
                align-items: center !important;
                justify-content: center !important;
                background: transparent !important;
                color: var(--text-secondary) !important;
            }
            .new-chat-top-btn svg {
                width: 20px !important;
                height: 20px !important;
            }

            /* --- 2. 输入框：Gemini 胶囊风格 --- */
            /* 圆形按钮保护：强制 1:1 宽高比，重置 min-height */
            .send-btn,
            .attach-btn,
            .mic-btn,
            .think-switch-btn,
            .search-switch-btn,
            .toggle-sidebar-btn,
            .new-chat-top-btn,
            .mobile-more-tools-btn,
            .action-btn {
                min-height: auto !important;
                aspect-ratio: 1 !important;
                box-sizing: border-box !important;
            }
            .input-panel {
                padding: 6px 12px !important;
                padding-bottom: calc(8px + env(safe-area-inset-bottom, 0px)) !important;
                background: var(--bg-main) !important;
            }
            .input-box-wrapper {
                border-radius: 24px !important;
                padding: 4px 12px !important;
                border: 1.5px solid var(--border-color) !important;
                box-shadow: 0 1px 6px rgba(0,0,0,0.06) !important;
                background: var(--bg-main) !important;
                max-width: 100% !important;
            }
            .input-box-wrapper:focus-within {
                border-color: var(--text-secondary) !important;
                box-shadow: 0 2px 12px rgba(59, 130, 246, 0.12) !important;
            }
            #message-input {
                font-size: 16px !important;
                padding: 8px 0 !important;
                min-height: 24px !important;
                max-height: 120px !important;
                line-height: 1.5 !important;
            }
            .input-tools-row {
                margin-top: 2px !important;
                padding-bottom: 2px !important;
            }
            .input-tools-left {
                gap: 2px !important;
            }
            .attach-btn {
                width: 32px !important;
                height: 32px !important;
                border-radius: 50% !important;
                padding: 0 !important;
                display: flex !important;
                align-items: center !important;
                justify-content: center !important;
            }
            .attach-btn svg {
                width: 18px !important;
                height: 18px !important;
            }
            .send-btn {
                width: 36px !important;
                height: 36px !important;
                border-radius: 50% !important;
                background: var(--primary-color) !important;
                transform: none !important;
                flex-shrink: 0 !important;
            }
            .send-btn:hover,
            .send-btn:active {
                transform: none !important;
            }
            .send-btn svg {
                width: 18px !important;
                height: 18px !important;
            }
            .mic-btn {
                width: 32px !important;
                height: 32px !important;
            }
            .mic-btn svg {
                width: 18px !important;
                height: 18px !important;
            }
            .think-switch-btn,
            .search-switch-btn {
                width: 32px !important;
                height: 32px !important;
            }
            .disclaimer-text {
                font-size: 11px !important;
                margin-top: 4px !important;
                padding: 0 12px !important;
            }

            /* --- 3. 消息气泡：Gemini 风格 --- */
            .message-row {
                padding: 10px 0 !important;
            }
            .message-content {
                padding: 0 16px !important;
                max-width: 100% !important;
                box-sizing: border-box !important;
            }
            .message-row.user-row .bubble {
                background-color: #1a73e8 !important;
                color: #ffffff !important;
                padding: 10px 16px !important;
                border-radius: 20px 20px 4px 20px !important;
                font-size: 15px !important;
                line-height: 1.5 !important;
                max-width: 85% !important;
                box-shadow: none !important;
            }
            .message-row.user-row .bubble,
            .message-row.user-row .bubble .user-text-content,
            .message-row.user-row .bubble .markdown-body,
            .message-row.user-row .bubble .markdown-body p,
            .message-row.user-row .bubble .markdown-body li,
            .message-row.user-row .bubble .markdown-body span {
                color: #ffffff !important;
            }
            .message-row.user-row .bubble .markdown-body a {
                color: #bfdbfe !important;
                text-decoration: underline !important;
            }
            .message-row.user-row .bubble .markdown-body code {
                background: rgba(255,255,255,0.15) !important;
                color: #e0e7ff !important;
                padding: 1px 5px !important;
                border-radius: 4px !important;
            }
            .message-row.user-row .bubble .markdown-body pre {
                background: rgba(0,0,0,0.2) !important;
            }
            .message-row.user-row .bubble .markdown-body pre code {
                color: #f0f0f0 !important;
                background: transparent !important;
            }
            .assistant-row .msg-body-wrapper {
                background: transparent !important;
                padding: 2px 4px 2px 20px !important;
                border: none !important;
                box-shadow: none !important;
            }
            .assistant-row .markdown-body {
                font-size: 15px !important;
                line-height: 1.75 !important;
                color: var(--text-primary) !important;
            }
            .assistant-row .markdown-body p {
                margin-bottom: 12px !important;
            }
            .assistant-avatar {
                display: none !important;
            }
            .assistant-row .action-bar {
                display: flex !important;
                opacity: 0.7 !important;
                gap: 4px !important;
                margin-top: 4px !important;
                padding: 0 !important;
            }
            .assistant-row .action-bar .action-btn {
                width: 28px !important;
                height: 28px !important;
                border-radius: 50% !important;
                padding: 4px !important;
                background: transparent !important;
            }
            .assistant-row .action-bar .action-btn svg {
                width: 14px !important;
                height: 14px !important;
            }
            .user-row .action-bar {
                display: none !important;
            }

            /* --- 4. 欢迎页：简洁问候 --- */
            .empty-welcome {
                padding: 40px 20px 20px !important;
                justify-content: flex-start !important;
                padding-top: calc(12vh) !important;
            }
            .welcome-v2 {
                text-align: center !important;
            }
            .welcome-v2-header {
                font-size: 22px !important;
                font-weight: 600 !important;
                margin-bottom: 8px !important;
            }
            .welcome-v2-desc {
                font-size: 14px !important;
                line-height: 1.6 !important;
                color: var(--text-secondary) !important;
                max-width: 300px !important;
                margin: 0 auto !important;
            }
            .sphere-avatar {
                width: 48px !important;
                height: 48px !important;
                margin-bottom: 16px !important;
            }

            /* --- 5. 对话区域优化 --- */
            .chat-container {
                padding: 8px 0 60px !important;
            }
            .content-wrapper {
                padding-top: calc(48px + env(safe-area-inset-top, 0px)) !important;
            }

            /* --- 6. 模型菜单：屏幕居中弹窗 --- */
            .model-menu {
                position: fixed !important;
                left: 50% !important;
                top: 40px !important;
                transform: translateX(-50%) !important;
                z-index: 2147483646 !important;
                width: 90% !important;
                max-width: 400px !important;
                max-height: 80vh !important;
                border-radius: 16px !important;
                padding: 20px 16px !important;
                background: var(--bg-main) !important;
                border: 1px solid var(--border-color) !important;
                box-shadow: 0 10px 40px rgba(0,0,0,0.3) !important;

                display: none;
            }
            .model-menu.active {
                display: flex;
                flex-direction: column;
            }
            .model-menu .menu-header {
                font-size: 16px !important;
                font-weight: 600 !important;
                padding: 12px 20px 8px !important;
                text-align: center !important;
            }
            .model-list {
                padding: 0 8px !important;
            }
            .model-item,
            .agent-selector-item {
                padding: 8px 12px !important;
                border-radius: 10px !important;
                min-height: 30px !important;
            }
            .model-expand-btn {
                padding: 8px !important;
                justify-content: center !important;
            }


            /* 隐藏悬浮输入按钮（手机端用原有输入框） */
            .compare-float-input,
            .compare-float-input.active,
            .compare-float-input.expanded {
                display: none !important;
            }
            
            /* 对比模式：输入框缩小 30%，对话区可滚动 */
            .multi-response-container.active ~ .input-panel #message-input {
                min-height: 18px !important;
                max-height: 60px !important;
                padding: 5px 0 !important;
            }
            .multi-response-container.active ~ .input-panel .input-box-wrapper {
                padding: 1px 10px !important;
            }
            .multi-response-container.active ~ .input-panel {
                padding: 4px 10px 6px !important;
                padding-bottom: calc(6px + env(safe-area-inset-bottom, 0px)) !important;
            }
            /* 对比面板内容区：可滚动查看多轮对话 */
            .multi-response-body {
                overflow-y: auto !important;
                -webkit-overflow-scrolling: touch !important;
            }
            
            /* 会议模式：隐藏标题栏模型名称 + 隐藏自带输入框（用原有输入框） */
            .meeting-header-models {
                display: none !important;
            }
            .meeting-input-area {
                display: none !important;
            }

            /* ============================================= */
            /* ===  Phase 3: 侧边栏 + 欢迎页改造         === */
            /* ============================================= */

            /* --- 7. 侧边栏：Gemini 风格（最大 80% 宽度） --- */
            .sidebar {
                position: fixed !important;
                top: 0 !important;
                left: 0 !important;
                bottom: 0 !important;
                right: auto !important;
                width: 80vw !important;
                max-width: 320px !important;
                z-index: 10001 !important;
                transform: translateX(-100%) !important;
                margin-left: 0 !important;
                transition: none !important; /* JS 加载后启用动画 */
                background: var(--bg-sidebar) !important;
                padding-top: env(safe-area-inset-top, 0px) !important;
                padding-bottom: env(safe-area-inset-bottom, 0px) !important;
                display: flex !important;
                flex-direction: column !important;
                overscroll-behavior: contain !important;
                overflow-y: auto !important;
                -webkit-overflow-scrolling: touch !important;
            }
            .sidebar.animated {
                transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
            }
            .sidebar:not(.collapsed) {
                transform: translateX(0) !important;
            }
            .sidebar.collapsed {
                display: flex !important; /* 覆盖基础 CSS 的 display:none */
                transform: translateX(-100%) !important;
                margin-left: 0 !important;
            }
            /* 侧边栏头部 */
            .sidebar-header {
                display: flex !important;
                align-items: center !important;
                justify-content: space-between !important;
                padding: 12px 16px !important;
                padding-top: calc(12px + env(safe-area-inset-top, 0px)) !important;
                flex-shrink: 0 !important;
            }
            .sidebar-logo {
                font-size: 18px !important;
                font-weight: 700 !important;
            }
            .collapse-btn {
                width: 40px !important;
                height: 40px !important;
                min-height: auto !important;
                aspect-ratio: 1 !important;
            }
            /* 导航区域 */
            .sidebar-nav {
                padding: 8px 12px !important;
                flex-shrink: 0 !important;
            }
            .sidebar-nav .nav-item {
                border-radius: 10px !important;
                padding: 8px 12px !important;
                font-size: 14px !important;
                font-weight: 500 !important;
                gap: 10px !important;
                min-height: 34px !important;
            }
            .sidebar-nav .nav-item svg {
                width: 20px !important;
                height: 20px !important;
                flex-shrink: 0 !important;
            }
            /* 对话历史列表 */
            .history-list {
                flex: 1 !important;
                overflow-y: auto !important;
                padding: 4px 12px !important;
                -webkit-overflow-scrolling: touch !important;
            }
            .history-list .nav-item {
                border-radius: 10px !important;
                padding: 12px 14px !important;
                font-size: 14px !important;
                min-height: 44px !important;
            }
            /* 侧边栏底部用户区 */
            .sidebar-footer {
                flex-shrink: 0 !important;
                padding: 8px 12px !important;
                padding-bottom: calc(8px + env(safe-area-inset-bottom, 0px)) !important;
                border-top: 1px solid var(--border-color) !important;
            }
            .user-profile-card {
                border-radius: 12px !important;
                padding: 10px 12px !important;
                margin: 0 !important;
            }
            /* 遮罩层 */
            .mobile-overlay {
                z-index: 10000 !important;
                background: rgba(0,0,0,0.5) !important;
            }

            /* --- 8. 欢迎页快捷提示卡片 --- */
            .empty-welcome {
                padding: 0 16px !important;
                padding-top: calc(12vh) !important;
            }
            .sphere-avatar {
                width: 44px !important;
                height: 44px !important;
                margin-bottom: 12px !important;
            }
            .welcome-v2-header {
                font-size: 20px !important;
                font-weight: 600 !important;
                margin-bottom: 6px !important;
                letter-spacing: -0.3px !important;
            }
            .welcome-v2-desc {
                font-size: 13px !important;
                line-height: 1.5 !important;
                color: var(--text-tertiary) !important;
                max-width: 280px !important;
                margin: 0 auto 24px !important;
            }
            /* 猜你想问 卡片 */
            .guess-questions {
                display: flex !important;
                flex-direction: column !important;
                gap: 8px !important;
                width: 100% !important;
                max-width: 360px !important;
                padding: 0 !important;
            }
            .guess-item {
                background: var(--bg-secondary, #f9fafb) !important;
                border: 1px solid var(--border-color) !important;
                border-radius: 16px !important;
                padding: 14px 16px !important;
                font-size: 14px !important;
                color: var(--text-primary) !important;
                cursor: pointer !important;
                transition: all 0.15s !important;
                text-align: left !important;
                line-height: 1.4 !important;
            }
            .guess-item:active {
                background: var(--hover-bg) !important;
                transform: scale(0.98) !important;
            }

            /* --- 9. 侧边栏主题切换 --- */
            .sidebar-theme-btn {
                display: flex !important;
                width: 40px !important;
                height: 40px !important;
                min-height: auto !important;
                aspect-ratio: 1 !important;
                border-radius: 50% !important;
                align-items: center !important;
                justify-content: center !important;
            }

            /* --- 10. 对话区域间距微调 --- */
            .message-row:first-child {
                padding-top: 12px !important;
            }
            .message-row:last-child {
                padding-bottom: 12px !important;
            }
        }
        @media (max-width: 900px) {
            .assistant-avatar {
                position: relative;
                left: 0;
                top: 0;
                margin-left: 0;
                margin-bottom: 8px;
            }
        }
        @media (max-width: 1024px) {
            .editor-main { flex-direction: column; }
            .editor-pane { border-right: none; border-bottom: 1px solid var(--border-color); width: 100% !important; height: 50%; }
            .preview-pane { width: 100% !important; height: 50%; }
            .resizer { width: 100%; height: 16px; margin: -8px 0; cursor: row-resize; }
            .resizer-handle { width: 24px; height: 12px; flex-direction: row; }
            .icon-sidebar-panel { display: none !important; }
            .icon-hamburger { display: block !important; }
            .message-input, #message-input, textarea { font-size: 16px !important; /* 防止 iOS 缩放 */ }
            body {
                height: 100vh;
                height: 100dvh;
                height: -webkit-fill-available;
                /* ★ 确保 flex 子元素填满高度，消除底部留白 */
                min-height: 100vh;
                min-height: 100dvh;
            }
            .sidebar {
                padding-top: calc(16px + env(safe-area-inset-top, 0px)) !important;
                padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px)) !important;
            }
            .input-panel { padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px)) !important; }
            .modal-overlay {
                padding-top: env(safe-area-inset-top, 0px);
                padding-bottom: env(safe-area-inset-bottom, 0px);
            }
            .chat-container { padding-bottom: calc(60px + env(safe-area-inset-bottom, 0px)); }
            #voice-overlay {
                padding-top: env(safe-area-inset-top, 0px);
                padding-bottom: env(safe-area-inset-bottom, 0px);
            }
            #video-overlay {
                padding-top: env(safe-area-inset-top, 0px);
                padding-bottom: env(safe-area-inset-bottom, 0px);
            }
            #canvas-overlay {
                top: env(safe-area-inset-top, 0px) !important;
                bottom: env(safe-area-inset-bottom, 0px) !important;
            }
            #canvas-ai-toolbar { top: calc(50% + env(safe-area-inset-top, 0px) / 2) !important; }
        }
        @media (max-width: 1200px) {
            .app-grid { grid-template-columns: repeat(4, 1fr); max-width: 960px; }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            html {
                --sat: max(env(safe-area-inset-top), 24px);
                --sab: max(env(safe-area-inset-bottom), 20px);
                --sar: max(env(safe-area-inset-right), 0px);
                --sal: max(env(safe-area-inset-left), 0px);
            }
            body {
                height: auto !important;
                min-height: 100vh;
                min-height: 100dvh;
            }
            .main-content {
                height: auto !important;
                min-height: 100dvh;
                padding-top: max(env(safe-area-inset-top), 24px) !important;
            }
            .sidebar {
                width: 280px;
                padding-top: calc(16px + max(env(safe-area-inset-top), 24px));
            }
            .top-nav { padding-top: max(env(safe-area-inset-top), 24px) !important; }
            .content-wrapper { padding-top: calc(60px + max(env(safe-area-inset-top), 24px)) !important; }
            .chat-container {
                min-height: 0;
                padding-bottom: max(env(safe-area-inset-bottom), 20px);
            }
            .input-panel { padding-bottom: calc(10px + max(env(safe-area-inset-bottom), 20px)) !important; }
            .main-content .empty-welcome { display: flex; }
            /* iPad 触摸友好 - 仅导航/列表项 */
            .nav-item, .history-item-wrapper .nav-item, .model-item, .settings-item { min-height: 44px; padding: 12px 14px; }
            .sidebar.collapsed { display: none !important; }
            body.writer-mode-active .writer-overlay {
                top: -5px;
                padding-top: calc(env(safe-area-inset-top, 20px) - 5px);
            }
            .app-grid {
                grid-template-columns: repeat(3, 1fr) !important;
                gap: 14px !important;
            }
            .app-card-thumb iframe { transform: scale(0.45) !important; }
            .code-action-btn {
                width: 38px !important;
                height: 38px !important;
            }
            @supports (padding-top: env(safe-area-inset-top)) {
            .main-content::before {
            height: max(env(safe-area-inset-top), 24px);
            }
            }
            /* iPad: coder/writer 模式下折叠侧边栏完全隐藏 */
            body.coder-mode .sidebar.collapsed,
            body.writer-mode-active .sidebar.collapsed { display: none !important; }
            /* iPad 编程模式：电脑版三栏布局（侧边栏 280px） */
            body.coder-mode .sidebar.collapsed ~ .main-content + #chat-editor-resizer {
                left: calc(400px + 5px) !important;
            }
            body.coder-mode .sidebar.collapsed ~ .editor-overlay {
                left: calc(400px + 5px + 1px) !important;
            }
            body.coder-mode.chat-collapsed .sidebar.collapsed ~ .editor-overlay {
                left: 0 !important;
            }
            body.coder-mode #collapse-chat-btn { display: flex !important; }
            /* iPad 编程模式：覆盖 max-width:1024px 的单栏布局，恢复电脑版左右排列 */
            .editor-main { flex-direction: row !important; align-items: stretch !important; }
            .editor-pane { width: 50% !important; height: 100% !important; flex: none !important; border-right: 1px solid var(--border-color) !important; border-bottom: none !important; }
            .preview-pane { width: 50% !important; height: 100% !important; flex: none !important; }
            .resizer { width: 8px !important; height: 100% !important; margin: 0 !important; cursor: col-resize !important; flex-direction: column !important; }
            .resizer-handle { width: 12px !important; height: 24px !important; flex-direction: column !important; }
            .icon-sidebar-panel { display: flex !important; }
            .icon-hamburger { display: none !important; }
            /* iPad 文件树显示 */
            body.coder-mode .editor-overlay .file-tree-pane { display: flex !important; width: 220px !important; }
            body.coder-mode .editor-overlay .terminal-pane { display: flex !important; }
            /* iPad 写作模式 */
            body.writer-mode-active .writer-overlay {
                display: flex !important;
                visibility: visible !important;
                opacity: 1 !important;
                pointer-events: auto !important;
                position: fixed !important;
                left: 0 !important;
                right: 0 !important;
                top: 0 !important;
                width: 100% !important;
                height: calc(100dvh - 50px - env(safe-area-inset-bottom, 0px)) !important;
                z-index: 1500 !important;
            }
            /* iPad 多模型标签优化 */
            .compare-models-bar {
                flex-wrap: wrap !important;
                padding: 6px 16px 6px 35px !important;
                overflow: visible !important;
                gap: 8px 8px !important;
                width: auto !important;
                max-width: 100% !important;
            }
            .compare-model-tag {
                font-size: 12px !important;
                padding: 5px 12px !important;
                border-radius: 12px !important;
            }
            .compare-model-tag .tag-dot {
                width: 7px !important;
                height: 7px !important;
            }
        }
        @media (min-width: 500px) and (max-width: 700px) {
            .sidebar { width: 240px; }
            .model-menu { width: 280px; }
        }
        @media (min-width: 769px) {
            .mobile-overlay { display: none !important; }
            .sidebar-theme-btn { display: none !important; }
            body.coder-mode .top-nav {
                top: 15px !important;
                padding-top: 0 !important;
                height: 56px !important;
            }
            body.coder-mode .content-wrapper { padding-top: calc(71px + max(env(safe-area-inset-top), 24px)) !important; }
            body.coder-mode .editor-overlay {
                top: -10px !important;
                padding-top: calc(env(safe-area-inset-top, 20px)) !important;
            }
            body.coder-mode .sidebar:not(.collapsed) ~ .editor-overlay,
            body.coder-mode .sidebar.collapsed ~ .editor-overlay,
            body.coder-mode.chat-collapsed .sidebar:not(.collapsed) ~ .editor-overlay,
            body.coder-mode.chat-collapsed .sidebar.collapsed ~ .editor-overlay { top: -10px !important; }
            body.writer-mode-active .writer-overlay {
                top: -5px !important;
                padding-top: calc(env(safe-area-inset-top, 20px) - 5px) !important;
            }
            .new-chat-top-btn { display: none; }
            .coder-mobile-tabs { display: none !important; }
        }
        @media (orientation: landscape) and (max-height: 500px) {
            .chat-container {
                padding-bottom: 20px !important;
                padding-right: 5px !important;
                padding: 8px 5px 8px 16px !important;
            }
            .input-panel {
                padding: 2px 5px calc(2px + var(--sab)) 12px !important;
                padding-bottom: calc(4px + var(--sab)) !important;
            }
            .message-row { padding: 4px 16px !important; }
            .main-content { padding-top: calc(0px + var(--sat)); }
            .input-box-wrapper { border-radius: 20px !important; padding: 2px 10px !important; }
            #message-input { font-size: 14px !important; padding: 4px 0 !important; min-height: 32px !important; }
            .top-nav { height: 44px !important; padding: 0 12px !important; }
            .empty-welcome { padding: 20px 16px !important; }
            .welcome-v2-header { font-size: 20px !important; margin-bottom: 6px !important; }
            .welcome-v2-desc { font-size: 13px !important; }
        }
        @media (min-width: 1025px) and (max-width: 1366px) {
            .sidebar { width: 280px; }
            .sidebar.collapsed { display: none !important; }
            /* 编程模式：侧边栏 280px 定位 */
            body.coder-mode .sidebar:not(.collapsed) ~ .editor-overlay { left: calc(280px + 400px + 5px + 1px) !important; }
            body.coder-mode .sidebar:not(.collapsed) ~ .main-content + #chat-editor-resizer { left: calc(280px + 400px + 5px) !important; }
            body.coder-mode.chat-collapsed .sidebar:not(.collapsed) ~ .editor-overlay { left: 280px !important; }
            .chat-container {
                max-width: 900px;
                margin: 0 auto;
            }
        }
        @media (prefers-color-scheme: dark) {
            select, input[type="text"], input[type="password"], textarea { color-scheme: dark; }
        }


/* === Extracted from index.html style blocks === */
                body.coder-mode #collapse-chat-btn { display: flex !important; }

        .ai-rewrite-toolbar {
            position: absolute;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            display: none;
            align-items: center;
            padding: 4px 8px;
            z-index: 5000;
            transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
            pointer-events: auto;
        }
        .ai-rewrite-toolbar button {
            background: transparent;
            border: none;
            padding: 6px 12px;
            font-size: 13px;
            cursor: pointer;
            border-radius: 8px;
            transition: all 0.2s;
            color: #475569;
            font-weight: 500;
        }
        .ai-rewrite-toolbar button:hover {
            background: #eff6ff;
            color: #3b82f6;
        }
        .ai-toolbar-divider {
            width: 1px;
            height: 20px;
            background: #e2e8f0;
            margin: 0 8px;
        }
        .ai-rewrite-toolbar input {
            border: none;
            outline: none;
            padding: 6px 8px;
            font-size: 13px;
            background: transparent;
            width: 160px;
            color: #1e293b;
        }
        
        /* Writer Mode Layout Updates */
        body.writer-mode-active .main-content {
            flex: none !important;
            width: 400px; /* Default sidebar width for chat when writing */
            min-width: 390px !important;
            border-right: none !important;
            transition: width 0.05s linear;
        }

        body.writer-mode-active .content-wrapper {
            padding-top: 40px !important; /* Move up by 20px from default 60px */
        }

        body.writer-mode-active .chat-container {
            padding-bottom: 40px !important; /* Extra padding at bottom to prevent being obscured */
            padding-right: 5px !important; /* 对话区域与输入框宽度一致，保持与编辑区5px距离 */
        }

        body.writer-mode-active .api-key-link {
            display: none !important;
        }
        
        /* Infinite Canvas Layout */
        .canvas-overlay {
            user-select: none;
            cursor: default;
            /* ★ P0修复: 全面阻止所有方向的浏览器导航手势 */
            overscroll-behavior: none !important;
            overscroll-behavior-x: none !important;
            overscroll-behavior-y: none !important;
            -webkit-overflow-scrolling: touch;
            /* 允许全部手势 (Tldraw需要双指缩放/旋转/平移) */
            touch-action: none !important;
        }
        /* ★ P0修复: 画布内所有元素允许完整手势,阻止系统导航 */
        .canvas-overlay * {
            touch-action: none; /* 允许全部手势，包含双指旋转 */
        }
        /* 画布内的按钮恢复正常交互 */
        .canvas-overlay button,
        .canvas-overlay input,
        .canvas-overlay label,
        .canvas-overlay select {
            touch-action: manipulation;
        }
        .canvas-node {
            transition: border-color 0.2s, box-shadow 0.2s;
            overflow: visible !important;
            user-select: none;
        }
        .canvas-node:hover {
            border-color: #3b82f6 !important;
            box-shadow: 0 10px 35px rgba(59, 130, 246, 0.15) !important;
        }
        .node-port {
            transition: all 0.2s;
            z-index: 20;
        }
        .node-port:hover {
            transform: translateX(-50%) scale(1.4);
            background: #3b82f6 !important;
            box-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
        }
        .canvas-top-bar { box-shadow: 0 2px 10px rgba(0,0,0,0.02); }

        .writer-resizer {
            position: fixed;
            top: 0;
            bottom: 0;
            left: 0; /* Positioned by JS */
            width: 1px;
            cursor: col-resize;
            background: var(--border-color);
            z-index: 1001;
            display: none;
            transition: background 0.2s, width 0.1s;
        }
        /* Create a wider invisible hit area around the 1px line */
        .writer-resizer::after {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: -4px;
            right: -4px;
            z-index: 1;
        }
        .writer-resizer:hover, .writer-resizer.dragging {
            background: var(--primary-color);
            width: 3px;
            z-index: 1002;
        }
        .writer-resizer .resizer-handle {
            display: flex;
            flex-direction: column;
            gap: 4px;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 2;
        }
        .writer-resizer .resizer-handle span {
            width: 3px;
            height: 3px;
            background: rgba(0,0,0,0.3);
            border-radius: 50%;
            transition: background 0.2s;
        }
        .writer-resizer:hover .resizer-handle span, .writer-resizer.dragging .resizer-handle span {
            background: #ffffff;
        }

        body.writer-mode-active #writer-overlay {
            display: flex;
        }

        body.writer-mode-active .writer-resizer {
            display: block;
        }
        
        .writer-overlay {
            position: fixed;
            left: 0; /* Positioned by JS */
            right: 0;
            top: 0;
            bottom: 0;
            z-index: 1000;
            display: none;
            flex-direction: column;
            background: #ffffff;
            border-left: 1px solid var(--border-color);
            padding-top: env(safe-area-inset-top, 20px);
        }

        @page {
            size: A4;
            margin: 20mm;
        }

        .markdown-body table {
            border-collapse: collapse;
            width: 100%;
            margin-bottom: 16px;
        }
        .markdown-body table th, .markdown-body table td {
            border: 1px solid var(--border-color);
            padding: 8px 12px;
            text-align: left;
        }
        .markdown-body table th {
            background-color: var(--bg-sidebar);
            font-weight: 600;
        }

        /* Rest of existing writer styles... */
        .writer-top-bar {
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            border-bottom: 1px solid var(--border-color);
            background: #fdfdfd;
        }
        .writer-title {
            font-size: 16px;
            font-weight: 500;
            color: #333;
        }
        .writer-top-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .writer-action-group {
            display: flex;
            gap: 1px;
            background: var(--border-color);
            border-radius: 8px;
            padding: 1px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .writer-btn {
            background: #fff;
            border: 1px solid var(--border-color);
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            cursor: pointer;
            color: var(--text-secondary);
            transition: all 0.2s;
            padding: 0;
        }
        .writer-btn:hover {
            background: #f5f5f5;
            color: var(--primary-color);
        }
        .writer-btn svg {
            width: 18px;
            height: 18px;
        }
        .writer-btn-text {
            font-size: 10px;
            font-weight: 800;
            text-transform: uppercase;
            line-height: 1;
        }
        .writer-close-btn {
            background: #fff;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: all 0.2s;
            cursor: pointer;
        }
        .writer-close-btn:hover {
            background: #fee2e2;
            color: #ef4444;
            border-color: #fca5a5;
        }
        .writer-close-btn svg { width: 18px; height: 18px; }
        .writer-content-area {
            flex: 1;
            padding: 40px 60px;
            overflow-y: auto;
            font-size: 16px;
            line-height: 1.8;
            color: #1a1a1a;
            max-width: 850px;
            margin: 0 auto;
            width: 100%;
        }
        /* 写作区空白文档占位 */
        #writer-content-body[data-placeholder]:empty:before {
            content: attr(data-placeholder);
            color: #94a3b8;
            pointer-events: none;
        }
        #writer-content-body:focus {
            outline: none;
        }
        body.writer-mode-active #input-write-btn {
            background: rgba(59, 130, 246, 0.1) !important;
            color: var(--primary-color) !important;
        }
        body.writer-mode-active #writing-mode-btn {
            background:#ffffff; color:#3b82f6; box-shadow:0 1px 3px rgba(0,0,0,0.1);
        }

/* ==================== 模型广场样式 ==================== */

/* 桌面端: 供应商标签 */
#model-plaza-modal .plaza-vendor-tab {
    padding: 6px 14px; border-radius: 20px; border: 1px solid var(--border-color);
    background: var(--bg-primary); color: var(--text-secondary); cursor: pointer;
    font-size: 13px; transition: all 0.2s; white-space: nowrap;
}
#model-plaza-modal .plaza-vendor-tab:hover { background: var(--hover-bg); }
#model-plaza-modal .plaza-vendor-tab.active { background: #111; color: #fff; border-color: #111; }

/* 模型卡片 - 信息丰富风格 */
#model-plaza-modal .plaza-model-card {
    display: flex; align-items: flex-start; padding: 14px 16px; margin-bottom: 8px;
    border: 1px solid #e0e0e0; border-radius: 12px; cursor: pointer;
    transition: all 0.15s; gap: 12px; background: #fff;
}
#model-plaza-modal .plaza-model-card:hover { background: #f8f8f8; border-color: #ccc; }
#model-plaza-modal .plaza-model-card.selected { border-color: #111; background: #fafafa; }
#model-plaza-modal .plaza-model-card.maintenance { opacity: 0.55; }

#model-plaza-modal .plaza-model-card .plaza-check {
    width: 22px; height: 22px; border-radius: 6px; border: 2px solid #ccc;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: all 0.15s; margin-top: 2px;
}
#model-plaza-modal .plaza-model-card.selected .plaza-check {
    background: #111; border-color: #111;
}
#model-plaza-modal .plaza-model-card.selected .plaza-check svg { display: block; }
#model-plaza-modal .plaza-model-card .plaza-check svg { display: none; }

#model-plaza-modal .plaza-model-info { flex: 1; min-width: 0; }
#model-plaza-modal .plaza-model-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
#model-plaza-modal .plaza-model-name { font-size: 14px; color: #111; font-weight: 600; }
#model-plaza-modal .plaza-model-vendor {
    font-size: 11px; color: #666; margin-left: auto;
    padding: 2px 10px; background: #f5f5f5; border-radius: 10px; border: 1px solid #e0e0e0;
}
#model-plaza-modal .plaza-model-desc { font-size: 12px; color: #888; margin-top: 4px; line-height: 1.4; }
#model-plaza-modal .plaza-model-pricing {
    display: flex; align-items: center; gap: 4px; margin-top: 6px; font-size: 12px; flex-wrap: wrap;
}
#model-plaza-modal .plaza-price-label { color: #999; font-size: 11px; }
#model-plaza-modal .plaza-price-orig { color: #bbb; text-decoration: line-through; font-size: 11px; }
#model-plaza-modal .plaza-price-now { color: #111; font-weight: 600; }
#model-plaza-modal .plaza-price-sep { color: #ddd; margin: 0 4px; }
#model-plaza-modal .plaza-price-unit { color: #999; font-size: 10px; }
#model-plaza-modal .plaza-discount-badge {
    font-size: 10px; padding: 1px 6px; border-radius: 4px;
    background: #fff0f0; color: #e74c3c; font-weight: 600; border: 1px solid #fdd;
}
#model-plaza-modal .plaza-maint-badge {
    font-size: 10px; padding: 1px 6px; border-radius: 4px;
    background: #f5f5f5; color: #999; border: 1px solid #e0e0e0;
}

/* ==================== 移动端模型广场 ==================== */



/* === Performance: CSS Contain (V4.21.1) === */
.chat-container { contain: layout style; }
.chat-message, .assistant-row, .user-row { contain: layout style paint; }
.msg-content, .assistant-content { contain: layout style; }
.model-trigger, .custom-model-dropdown { contain: layout style; }
.sidebar { contain: layout style paint; }
.input-panel, .input-box-wrapper { contain: layout style; }
.top-nav { contain: layout style; }
.search-results-panel { contain: layout style; }

/* ============================================
   Agent 创建下拉菜单 (V4.22.0)
   ============================================ */
.agent-create-dropdown { position: relative; }
.agent-create-menu {
    animation: wfMenuIn 0.15s ease;
}
@keyframes wfMenuIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 全屏 Agent 编辑器 */
.agent-create-overlay.fullscreen {
    align-items: flex-start !important;
    justify-content: center !important;
    padding: 64px 24px 40px !important;
    overflow-y: auto !important;
    z-index: 10000 !important;
    background: var(--bg-main) !important;
}
.agent-create-overlay.fullscreen .agent-create-modal {
    max-width: 860px !important;
    width: 100% !important;
    max-height: none !important;
    overflow: visible !important;
}
.agent-create-overlay.fullscreen #agent-fullscreen-back {
    display: flex !important;
}

/* 全屏模式下隐藏原来的页面关闭按钮 */
#main-content-wrapper.state-agent .agent-create-overlay.fullscreen ~ .page-close-btn,
#main-content-wrapper.state-agent .agent-create-overlay.fullscreen ~ * > .page-close-btn {
    display: none !important;
}

@media (max-width: 768px) {
    .agent-create-overlay.fullscreen {
        padding: 56px 8px 20px !important;
    }
    .agent-create-overlay.fullscreen #agent-fullscreen-back {
        top: 8px;
        left: 6px;
        padding: 6px 10px;
        font-size: 12px;
    }
    .agent-create-overlay.fullscreen .agent-create-modal {
        border-radius: 12px;
    }
}
@keyframes wfSpin { to { transform:rotate(360deg); } }

:root[data-theme="dark"] #wf-canvas-v2 { background: #2a2a2a !important; background-image: radial-gradient(circle, #3a3a3a 1px, transparent 1px) !important; background-size: 20px 20px !important; }

/* ===== 智能体画布暗色主题 (基于 #2a2a2a) ===== */
:root[data-theme="dark"] #agent-workflow-overlay {
    --wf-canvas-bg: #2a2a2a;
    --wf-surface: #323232;
    --wf-surface-hover: #3a3a3a;
    --wf-elevated: #383838;
    --wf-border: #404040;
    --wf-text: #e0e0e0;
    --wf-text-secondary: #a8a8a8;
    --wf-text-muted: #787878;
}
:root[data-theme="dark"] #agent-workflow-overlay #wf-canvas-v2 {
    background: #2a2a2a !important;
    background-image: radial-gradient(circle, #3a3a3a 1px, transparent 1px) !important;
}
:root[data-theme="dark"] #agent-workflow-overlay #wf-canvas-v2 > div {
    background: transparent;
}
/* 顶部栏 */
:root[data-theme="dark"] #agent-workflow-overlay > div:last-child {
    background: #323232 !important;
    border-color: #3a3a3a !important;
}
/* 浮动面板 */
:root[data-theme="dark"] #agent-workflow-overlay #wf-node-panel-v2,
:root[data-theme="dark"] #agent-workflow-overlay #wf-settings-card {
    background: #333333 !important;
    border-color: #404040 !important;
}
/* 属性面板 */
:root[data-theme="dark"] #agent-workflow-overlay #wf-props-panel {
    background: #303030 !important;
    border-color: #3a3a3a !important;
}
:root[data-theme="dark"] #agent-workflow-overlay #wf-props-panel > div:first-child,
:root[data-theme="dark"] #agent-workflow-overlay #wf-props-panel > div:last-child {
    border-color: #3a3a3a !important;
}
/* 节点 */
:root[data-theme="dark"] #agent-workflow-overlay .wf-node-el-v2 {
    background: #383838 !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25) !important;
}
:root[data-theme="dark"] #agent-workflow-overlay .wf-node-body-v2 {
    background: #343434;
}
/* 输入框/选择框 */
:root[data-theme="dark"] #agent-workflow-overlay input,
:root[data-theme="dark"] #agent-workflow-overlay select,
:root[data-theme="dark"] #agent-workflow-overlay textarea {
    background: #2a2a2a !important;
    color: #e0e0e0 !important;
    border-color: #404040 !important;
}
:root[data-theme="dark"] #agent-workflow-overlay .wf-inline-text {
    background: transparent !important;
    border: none !important;
}
/* 节点头部保留彩色 */
:root[data-theme="dark"] #agent-workflow-overlay .wf-node-header-v2 {
    box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

/* ===== V4.44.4: 统一对话字体大小 ===== */
/* 猜你想问 - 与 AI 回复内容字体一致 */
.suggestions-container .suggestion-btn,
.suggestion-chips .suggestion-chip {
    font-size: 14px !important;
    line-height: 1.6 !important;
    color: var(--text-secondary) !important;
}
.suggestions-container .suggestion-btn:hover {
    color: var(--primary-color) !important;
}
/* 用户消息 - 与 AI 回复内容字体一致 */
.user-row .message-content {
    font-size: 14px !important;
    line-height: 1.7 !important;
}
/* Coder 模式下的对话区域一致 */
body.coder-mode .suggestions-container .suggestion-btn,
body.coder-mode .user-row .message-content {
    font-size: 14px !important;
    line-height: 1.7 !important;
}

/* ===== V4.44.6: 模型菜单始终在最上层 ===== */
/* 确保 top-nav（含模型选择器）在所有模式下高于其他元素 */
body.coder-mode .top-nav { z-index: 99999 !important; position: relative !important; }
/* 输入面板降到最底层，不遮挡模型菜单 */
body.coder-mode .input-panel { z-index: 0 !important; }

/* 智能体菜单置顶 */
@media (max-width: 768px) { .agent-selector-menu { z-index: 2147483647 !important; } }