:root {
            --tencent-blue: #0084ff;
            --tencent-dark-blue: #0066cc;
            --sidebar-bg: #f8f9fa;
            --border-color: #e0e0e0;
            --text-primary: #333;
            --bg-primary: #fff;
        }

        .dark-mode {
            --sidebar-bg: #2d2d2d;
            --border-color: #404040;
            --text-primary: #e5e5e5;
            --bg-primary: #18191a;
            --tencent-blue: #3a6df7;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: #f5f7fa;
            color: var(--text-primary);
            transition: background-color 0.3s, color 0.3s;
            min-height: 100vh;
            padding: 20px;
        }

        .dark-mode body {
            background-color: #121212;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
        }

        /* 头部样式 */
        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
            padding-bottom: 20px;
            border-bottom: 2px solid var(--border-color);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .logo i {
            font-size: 32px;
            color: var(--tencent-blue);
        }

        .logo h1 {
            font-size: 1.8rem;
            font-weight: 600;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        /* 搜索框样式 */
        .search-box {
            position: relative;
            width: 400px;
            display: flex;
            align-items: center;
        }

        .search-box input {
            width: 100%;
            padding: 12px 20px;
            padding-right: 120px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
            font-size: 16px;
            background: var(--sidebar-bg);
            transition: all 0.3s ease;
            color: var(--text-primary);
        }

        .search-box input:focus {
            background: var(--bg-primary);
            outline: none;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
            border-color: var(--tencent-blue);
        }

        .search-box button {
            position: absolute;
            right: 6px;
            top: 50%;
            transform: translateY(-50%);
            padding: 8px 20px;
            height: 36px;
            border: none;
            border-radius: 18px;
            background: var(--tencent-blue);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all 0.3s ease;
            cursor: pointer;
            font-weight: 500;
        }

        .search-box button:hover {
            background: var(--tencent-dark-blue);
            transform: translateY(-50%) scale(0.98);
        }

        .btn {
            padding: 10px 18px;
            border-radius: 6px;
            border: none;
            background: var(--tencent-blue);
            color: white;
            font-weight: 500;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.2s;
        }

        .btn:hover {
            opacity: 0.9;
            transform: translateY(-2px);
        }

        .btn-primary {
            background: var(--tencent-blue);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--tencent-blue);
            color: var(--tencent-blue);
        }

        /* 主体布局 */
        .layout-container {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 25px;
            margin-top: 15px;
        }

        .sidebar {
            background: var(--sidebar-bg);
            border-radius: 12px;
            padding: 20px;
            border: 1px solid var(--border-color);
            height: fit-content;
        }

        .sidebar-section {
            margin-bottom: 25px;
            padding-bottom: 25px;
            border-bottom: 1px solid var(--border-color);
        }

        .sidebar-section:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .sidebar-section h3 {
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--tencent-blue);
            font-size: 1.1rem;
        }
		
		.favicon-char {
			width: 40px;
			height: 40px;
			display: flex;
			align-items: center;
			justify-content: center;
			background: rgba(var(--tencent-blue), 0.1);
			border-radius: 8px;
			font-weight: bold;
			color: var(--tencent-blue);
		}

        .main-content {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid var(--border-color);
        }
		
		.notification {
			position: fixed;
			top: 20px;
			right: 20px;
			padding: 10px 20px;
			background: #4CAF50;
			color: white;
			border-radius: 4px;
			box-shadow: 0 2px 10px rgba(0,0,0,0.2);
			z-index: 1000;
		}

		.notification.error {
			background: #f44336;
		}

        /* 分类导航 */
        #categoryList {
            list-style: none;
            padding: 0;
        }

        #categoryList li {
            padding: 12px 15px;
            cursor: pointer;
            transition: all 0.2s;
            border-radius: 8px;
            margin: 8px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.95rem;
        }

        #categoryList li:hover, #categoryList li.active {
            background: rgba(var(--tencent-blue), 0.1);
        }

        #categoryList li::after {
            content: attr(data-count);
            background: rgba(var(--tencent-blue), 0.15);
            color: var(--tencent-blue);
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.85rem;
        }

        /* 书签网格 */
        .bookmark-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 25px;
            margin-top: 25px;
        }

        .bookmark-card {
            border: 1px solid var(--border-color);
			transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-radius: 12px;
            padding: 20px;
            transition: all 0.3s;
            background: var(--bg-primary);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .bookmark-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
            border-color: var(--tencent-blue);
        }

        .card-header-top {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 15px;
        }

        .favicon {
            width: 40px;
            height: 40px;
            background: #f0f7ff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--tencent-blue);
            font-size: 18px;
            flex-shrink: 0;
        }

        .card-title-container {
            flex-grow: 1;
        }

        .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 5px;
            word-break: break-word;
        }

        .card-url {
            font-size: 0.85rem;
            color: #666;
            word-break: break-all;
        }

        .dark-mode .card-url {
            color: #aaa;
        }

        .card-description {
            color: #666;
            font-size: 0.95rem;
            line-height: 1.6;
            margin: 15px 0;
            flex-grow: 1;
        }

        .dark-mode .card-description {
            color: #ccc;
        }

        .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 15px;
        }

        .card-tag {
            background: rgba(var(--tencent-blue), 0.1);
            color: var(--tencent-blue);
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
        }

        .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid var(--border-color);
        }

        .card-category {
            font-size: 0.9rem;
            color: #666;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .dark-mode .card-category {
            color: #aaa;
        }

        .open-link {
            color: var(--tencent-blue);
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 5px;
            transition: all 0.2s;
        }

        .open-link:hover {
            color: var(--tencent-dark-blue);
        }

        /* 统计信息 */
        .stats-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            margin-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
        }

        .stats-info {
            display: flex;
            align-items: center;
            gap: 25px;
        }

        .stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
        }

        .stat-value {
            font-weight: 600;
            color: var(--tencent-blue);
        }

        /* 暗黑模式适配 */
        .dark-mode .sidebar {
            background: #242526;
            border-color: #444;
        }

        .dark-mode .main-content {
            background: #242526;
            border-color: #444;
        }

        .dark-mode .bookmark-card {
            background: #2d2d2d;
            border-color: #444;
        }

        .dark-mode .card-title {
            color: #f0f0f0;
        }

        /* 响应式设计 */
        @media (max-width: 1200px) {
            .layout-container {
                grid-template-columns: 1fr;
            }
            
            .sidebar {
                order: 2;
                margin-top: 25px;
            }
        }

        @media (max-width: 768px) {
            .header {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            
            .header-actions {
                width: 100%;
                flex-direction: column;
                align-items: stretch;
            }
            
            .search-box {
                width: 100%;
            }
            
            .bookmark-grid {
                grid-template-columns: 1fr;
            }
            
            .stats-bar {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
        }

        @media (max-width: 480px) {
            .layout-container {
                gap: 15px;
            }
            
            .sidebar, .main-content {
                padding: 15px;
            }
            
            .card-header-top {
                flex-direction: column;
                gap: 10px;
            }
        }
		

		.loading-indicator {
			text-align: center;
			padding: 20px;
			color: var(--tencent-blue);
			font-size: 1.2em;
		}

		/* 空状态提示 */
		.empty-state {
			text-align: center;
			padding: 40px;
			color: #666;
		}

		.dark-mode .empty-state {
			color: #aaa;
		}


		/* 移动端优化 */
		@media (max-width: 768px) {
			.bookmark-card {
				margin: 0 10px;
			}
			
			.card-title {
				font-size: 1rem;
			}
			
			.card-url {
				font-size: 0.75rem;
			}
		}
		
		/* 收藏按钮相关样式 */
		.favorite-btn {
			background: none;
			border: none;
			cursor: pointer;
			color: #FFD54F;
			font-size: 1.2rem;
			transition: all 0.3s;
			padding: 5px;
		}

		.favorite-btn:hover {
			transform: scale(1.1);
			color: #FFB300;
		}

		.card-header-top {
			position: relative; /* 确保收藏按钮定位 */
		}

		.favorite-btn {
			position: absolute;
			top: 0;
			right: 0;
		}