:root {
            --primary-color: #4361ee;
            --primary-hover: #3a56d4;
            --secondary-color: #f8f9fa;
            --text-primary: #2b2d42;
            --text-secondary: #8d99ae;
            --border-color: #e9ecef;
            --success-color: #2ec4b6;
            --warning-color: #ff9f1c;
            --danger-color: #e71d36;
            --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
            --radius: 8px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            background-color: #f0f2f5;
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        /* 布局容器 */
        .app-container {
            max-width: 1600px;
            margin: 0 auto;
            padding: 20px;
        }

        /* 头部样式 */
        .page-header {
            background: #fff;
            padding: 20px 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .page-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .page-title i {
            color: var(--primary-color);
        }

        /* 统计卡片 */
        .stats-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 24px;
        }

        .stat-card {
            background: #fff;
            padding: 20px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 15px;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .stat-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(67, 97, 238, 0.1);
            color: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .stat-info h3 {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .stat-info p {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 4px;
        }

        /* 控制栏 */
        .controls-bar {
            background: #fff;
            padding: 20px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .search-group {
            position: relative;
            flex: 1;
            min-width: 300px;
            max-width: 500px;
        }

        .search-group i {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
        }

        .search-input {
            width: 100%;
            padding: 12px 15px 12px 45px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            font-size: 14px;
            transition: var(--transition);
            background: #f8f9fa;
        }

        .search-input:focus {
            outline: none;
            border-color: var(--primary-color);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
        }

        .action-buttons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn {
            padding: 10px 20px;
            border: none;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--primary-color);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-secondary {
            background: #fff;
            border: 1px solid var(--border-color);
            color: var(--text-primary);
        }

        .btn-secondary:hover {
            background: #f8f9fa;
            border-color: #cbd5e1;
        }

        /* 表格区域 */
        .table-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .table-container {
            overflow-x: auto;
            min-height: 400px;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }

        thead {
            background: #f8f9fa;
            position: sticky;
            top: 0;
            z-index: 10;
        }

        th {
            padding: 16px;
            text-align: left;
            font-weight: 600;
            color: var(--text-secondary);
            border-bottom: 2px solid var(--border-color);
            white-space: nowrap;
            cursor: pointer;
            user-select: none;
            transition: background 0.2s;
        }

        th:hover {
            background: #e9ecef;
            color: var(--primary-color);
        }

        th i {
            margin-left: 5px;
            font-size: 12px;
            opacity: 0.5;
        }

        th.sorted i {
            opacity: 1;
            color: var(--primary-color);
        }

        td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-primary);
            max-width: 200px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        tbody tr {
            transition: background 0.15s;
        }

        tbody tr:hover {
            background-color: #f8f9ff;
        }

        /* 编辑状态 */
        .editable {
            position: relative;
            cursor: pointer;
        }

        .editable:hover::after {
            content: '\f303'; /* FontAwesome pen icon */
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--primary-color);
            opacity: 0.6;
        }

        .edit-wrapper {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 5;
            padding: 4px;
            display: flex;
            align-items: center;
            gap: 5px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
        }

        .edit-input {
            flex: 1;
            padding: 6px 10px;
            border: 1px solid var(--primary-color);
            border-radius: 4px;
            font-size: 13px;
            outline: none;
        }

        .edit-btn {
            padding: 4px 8px;
            border-radius: 4px;
            border: none;
            cursor: pointer;
            color: #fff;
            font-size: 12px;
        }

        .edit-btn-save { background: var(--success-color); }
        .edit-btn-cancel { background: var(--text-secondary); }

        /* 分页 */
        .pagination-container {
            padding: 20px;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .page-info {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .pagination {
            display: flex;
            gap: 5px;
        }

        .page-btn {
            min-width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border-color);
            background: #fff;
            border-radius: 4px;
            cursor: pointer;
            color: var(--text-primary);
            transition: var(--transition);
            font-size: 13px;
        }

        .page-btn:hover:not(:disabled) {
            background: #f1f3f5;
            border-color: #ced4da;
        }

        .page-btn.active {
            background: var(--primary-color);
            color: #fff;
            border-color: var(--primary-color);
        }

        .page-btn:disabled {
            background: #f8f9fa;
            color: #adb5bd;
            cursor: not-allowed;
        }

        /* 消息提示 */
        .toast {
            position: fixed;
            top: 20px;
            right: 20px;
            padding: 15px 25px;
            border-radius: var(--radius);
            background: #fff;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            gap: 12px;
            transform: translateX(120%);
            transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            z-index: 1000;
            border-left: 4px solid transparent;
        }

        .toast.show {
            transform: translateX(0);
        }

        .toast.success { border-left-color: var(--success-color); }
        .toast.error { border-left-color: var(--danger-color); }
        
        .toast i { font-size: 20px; }
        .toast.success i { color: var(--success-color); }
        .toast.error i { color: var(--danger-color); }

        /* Loading */
        .loading-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255,255,255,0.8);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 20;
            backdrop-filter: blur(2px);
        }

        .spinner {
            width: 40px;
            height: 40px;
            border: 3px solid #f3f3f3;
            border-top: 3px solid var(--primary-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

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

        /* 移动端适配 */
        @media (max-width: 768px) {
            .app-container { padding: 10px; }
            .page-header { padding: 15px; flex-direction: column; align-items: flex-start; }
            .controls-bar { padding: 15px; }
            .search-group { min-width: 100%; }
            .action-buttons { width: 100%; }
            .btn { flex: 1; justify-content: center; }
            
            /* 移动端卡片式表格 */
            table, thead, tbody, th, td, tr { display: block; }
            thead { display: none; }
            
            tbody tr {
                background: #fff;
                border-radius: var(--radius);
                box-shadow: var(--shadow-sm);
                margin-bottom: 15px;
                padding: 15px;
                border: 1px solid var(--border-color);
            }

            td {
                padding: 10px 0;
                display: flex;
                justify-content: space-between;
                align-items: center;
                border-bottom: 1px solid #f0f0f0;
                text-align: right;
                max-width: none;
            }

            td:last-child { border-bottom: none; }

            td::before {
                content: attr(data-label);
                font-weight: 600;
                color: var(--text-secondary);
                text-align: left;
                margin-right: 20px;
            }
        }