:root {
            --primary-color: #2c3e50;
            --secondary-color: #34495e;
            --accent-color: #3498db;
            --success-color: #27ae60;
            --warning-color: #f39c12;
            --danger-color: #e74c3c;
            --info-color: #17a2b8;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --sidebar-bg: #34495e;
            --sidebar-text: #ecf0f1;
            --header-bg: #2c3e50;
            --content-bg: #ffffff;
            --border-color: #dee2e6;
        }

        /* 主题配色方案 */
        .theme-blue { --primary-color: #2c3e50; --secondary-color: #34495e; --accent-color: #3498db; }
        .theme-green { --primary-color: #27ae60; --secondary-color: #229954; --accent-color: #52c41a; }
        .theme-purple { --primary-color: #8e44ad; --secondary-color: #7d3c98; --accent-color: #9b59b6; }
        .theme-red { --primary-color: #c0392b; --secondary-color: #a93226; --accent-color: #e74c3c; }
        .theme-orange { --primary-color: #e67e22; --secondary-color: #d35400; --accent-color: #f39c12; }
        .theme-teal { --primary-color: #16a085; --secondary-color: #138d75; --accent-color: #1abc9c; }
        .theme-indigo { --primary-color: #3f51b5; --secondary-color: #303f9f; --accent-color: #5c6bc0; }
        .theme-pink { --primary-color: #e91e63; --secondary-color: #c2185b; --accent-color: #f06292; }
        .theme-cyan { --primary-color: #00bcd4; --secondary-color: #00acc1; --accent-color: #4dd0e1; }
        .theme-lime { --primary-color: #8bc34a; --secondary-color: #7cb342; --accent-color: #aed581; }
        .theme-amber { --primary-color: #ffc107; --secondary-color: #ffa000; --accent-color: #ffca28; }
        .theme-brown { --primary-color: #795548; --secondary-color: #5d4037; --accent-color: #8d6e63; }
        .theme-grey { --primary-color: #607d8b; --secondary-color: #455a64; --accent-color: #90a4ae; }
        .theme-dark { --primary-color: #212121; --secondary-color: #424242; --accent-color: #616161; }
        .theme-light { --primary-color: #f5f5f5; --secondary-color: #e0e0e0; --accent-color: #bdbdbd; }

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

        body {
            font-family: 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background-color: var(--light-color);
            height: 100vh;
            overflow: hidden;
        }

        /* 登录页面样式 */
        .login-container {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
        }

        .login-box {
            background: white;
            padding: 40px;
            border-radius: 10px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
            width: 400px;
            animation: slideIn 0.5s ease;
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(-30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .login-header {
            text-align: center;
            margin-bottom: 30px;
        }

        .login-header h2 {
            color: var(--primary-color);
            font-weight: bold;
        }

        .login-header p {
            color: #666;
            font-size: 14px;
            margin-top: 5px;
        }

        /* 主系统布局 */
        .main-container {
            display: none;
            height: 100vh;
        }

        .sidebar {
            width: 260px;
            background: var(--sidebar-bg);
            color: var(--sidebar-text);
            height: 100vh;
            overflow-y: auto;
            position: fixed;
            left: 0;
            top: 0;
            transition: all 0.3s;
            z-index: 1000;
        }

        .sidebar-header {
            padding: 20px;
            background: var(--header-bg);
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .sidebar-header h3 {
            font-size: 18px;
            font-weight: bold;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .version-badge {
            background: var(--accent-color);
            color: white;
            padding: 2px 8px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: normal;
        }

        .sidebar-menu {
            padding: 10px 0;
        }

        .menu-item {
            padding: 12px 20px;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--sidebar-text);
            text-decoration: none;
            position: relative;
        }

        .menu-item:hover {
            background: rgba(255,255,255,0.1);
            padding-left: 25px;
        }

        .menu-item.active {
            background: var(--accent-color);
        }

        .menu-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: white;
        }

        .menu-item i {
            width: 20px;
            text-align: center;
        }

        .main-content {
            margin-left: 260px;
            height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .top-header {
            background: var(--header-bg);
            color: white;
            padding: 13px 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .header-left {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .theme-selector {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .theme-selector select {
            padding: 5px 10px;
            border-radius: 5px;
            border: none;
            background: rgba(255,255,255,0.2);
            color: white;
            cursor: pointer;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .user-info {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .content-area {
            flex: 1;
            padding: 20px;
            overflow-y: auto;
            background: var(--content-bg);
        }

        .tab-container {
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }

        .tab-header {
            display: flex;
            border-bottom: 2px solid var(--border-color);
            padding: 0 20px;
        }

        .tab-btn {
            padding: 15px 25px;
            background: none;
            border: none;
            cursor: pointer;
            color: #666;
            font-weight: 500;
            position: relative;
            transition: all 0.3s;
        }

        .tab-btn:hover {
            color: var(--accent-color);
        }

        .tab-btn.active {
            color: var(--accent-color);
        }

        .tab-btn.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--accent-color);
        }

        .tab-content {
            padding: 30px;
            display: none;
        }

        .tab-content.active {
            display: block;
            animation: fadeIn 0.3s;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        /* 功能模块样式 */
        .module-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--border-color);
        }

        .module-title {
            font-size: 24px;
            font-weight: bold;
            color: var(--primary-color);
        }

        .action-buttons {
            display: flex;
            gap: 10px;
        }

        .btn-custom {
            padding: 8px 20px;
            border-radius: 5px;
            border: none;
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .btn-primary-custom {
            background: var(--accent-color);
            color: white;
        }

        .btn-primary-custom:hover {
            background: var(--primary-color);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }

        .btn-success-custom {
            background: var(--success-color);
            color: white;
        }

        .btn-warning-custom {
            background: var(--warning-color);
            color: white;
        }

        .btn-danger-custom {
            background: var(--danger-color);
            color: white;
        }

        .btn-info-custom {
            background: var(--info-color);
            color: white;
        }

        /* 搜索栏 */
        .search-bar {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
        }

        .search-input {
            flex: 1;
            padding: 10px 15px;
            border: 1px solid var(--border-color);
            border-radius: 5px;
            font-size: 14px;
        }

        /* 数据表格 */
        .data-table {
            width: 100%;
            border-collapse: collapse;
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }

        .data-table thead {
            background: var(--primary-color);
            color: white;
        }

        .data-table th,
        .data-table td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }

        .data-table tbody tr:hover {
            background: #f8f9fa;
        }

        .status-badge {
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 500;
        }

        .status-active {
            background: #d4edda;
            color: #155724;
        }

        .status-pending {
            background: #fff3cd;
            color: #856404;
        }

        .status-inactive {
            background: #f8d7da;
            color: #721c24;
        }

        /* 统计卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .stat-card {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            transition: all 0.3s;
            border-left: 4px solid var(--accent-color);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }

        .stat-icon {
            width: 50px;
            height: 50px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 15px;
        }

        .stat-value {
            font-size: 32px;
            font-weight: bold;
            color: var(--primary-color);
            margin-bottom: 5px;
        }

        .stat-label {
            color: #666;
            font-size: 14px;
        }

        /* 模态框 */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 2000;
            animation: fadeIn 0.3s;
        }

        .modal.show {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .modal-content {
            background: white;
            border-radius: 10px;
            width: 90%;
            max-width: 800px;
            max-height: 90vh;
            overflow-y: auto;
            animation: slideUp 0.3s;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .modal-header {
            padding: 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .modal-title {
            font-size: 20px;
            font-weight: bold;
            color: var(--primary-color);
        }

        .modal-close {
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: #999;
        }

        .modal-body {
            padding: 20px;
        }

        .modal-footer {
            padding: 20px;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: flex-end;
            gap: 10px;
        }

        /* 表单样式 */
        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--primary-color);
        }

        .form-control {
            width: 100%;
            padding: 10px 15px;
            border: 1px solid var(--border-color);
            border-radius: 5px;
            font-size: 14px;
            transition: all 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        /* 移动端展示 */
        .mobile-preview {
            background: white;
            border-radius: 20px;
            padding: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .mobile-frame {
            width: 375px;
            height: 667px;
            border: 10px solid #333;
            border-radius: 30px;
            margin: 0 auto;
            overflow: hidden;
            position: relative;
            background: white;
        }

        .mobile-header {
            background: var(--primary-color);
            color: white;
            padding: 15px;
            text-align: center;
            font-weight: bold;
        }

        .mobile-content {
            height: calc(100% - 100px);
            overflow-y: auto;
            padding: 15px;
        }

        .mobile-nav {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: white;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-around;
            padding: 10px 0;
        }

        .mobile-nav-item {
            text-align: center;
            color: #666;
            cursor: pointer;
            transition: all 0.3s;
        }

        .mobile-nav-item:hover,
        .mobile-nav-item.active {
            color: var(--accent-color);
        }

        .mobile-nav-item i {
            font-size: 20px;
            display: block;
            margin-bottom: 5px;
        }

        /* 进度条 */
        .progress-bar-custom {
            width: 100%;
            height: 8px;
            background: #e9ecef;
            border-radius: 4px;
            overflow: hidden;
        }

        .progress-fill {
            height: 100%;
            background: var(--accent-color);
            border-radius: 4px;
            transition: width 0.3s;
        }

        /* 时间线 */
        .timeline {
            position: relative;
            padding-left: 40px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 30px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -25px;
            top: 5px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent-color);
            border: 2px solid white;
            box-shadow: 0 0 0 2px var(--accent-color);
        }

        .timeline-content {
            background: white;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
        }

        .timeline-date {
            color: #999;
            font-size: 12px;
            margin-bottom: 5px;
        }

        /* 图表容器 */
        .chart-container {
            position: relative;
            height: 300px;
            margin: 20px 0;
            background: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }

        .chart-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 20px;
            margin: 20px 0;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }

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

            .main-content {
                margin-left: 0;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .chart-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 加载动画 */
        .spinner {
            border: 3px solid #f3f3f3;
            border-top: 3px solid var(--accent-color);
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
            margin: 20px auto;
        }

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

        /* 提示框 */
        .toast {
            position: fixed;
            top: 20px;
            right: 20px;
            background: white;
            padding: 15px 20px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            display: none;
            align-items: center;
            gap: 10px;
            z-index: 3000;
            animation: slideInRight 0.3s;
        }

        @keyframes slideInRight {
            from {
                transform: translateX(100%);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        .toast.show {
            display: flex;
        }

        .toast-success {
            border-left: 4px solid var(--success-color);
        }

        .toast-error {
            border-left: 4px solid var(--danger-color);
        }

        .toast-warning {
            border-left: 4px solid var(--warning-color);
        }

        .toast-info {
            border-left: 4px solid var(--info-color);
        }

        /* 分页 */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin-top: 20px;
        }

        .pagination button {
            padding: 8px 12px;
            border: 1px solid var(--border-color);
            background: white;
            cursor: pointer;
            border-radius: 5px;
            transition: all 0.3s;
        }

        .pagination button:hover {
            background: var(--accent-color);
            color: white;
        }

        .pagination button.active {
            background: var(--accent-color);
            color: white;
        }

        /* 高级搜索 */
        .advanced-search {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 20px;
            display: none;
        }

        .advanced-search.show {
            display: block;
        }

        /* 文件上传 */
        .file-upload,
        .file-upload-area {
            border: 2px dashed var(--border-color);
            border-radius: 10px;
            padding: 40px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s;
        }

        .file-upload:hover,
        .file-upload-area:hover {
            border-color: var(--accent-color);
            background: rgba(52, 152, 219, 0.05);
        }
        
        /* 按钮尺寸 */
        .btn-sm {
            padding: 4px 12px !important;
            font-size: 13px !important;
        }

        /* 标签 */
        .tag {
            display: inline-block;
            padding: 4px 10px;
            background: var(--light-color);
            border-radius: 12px;
            font-size: 12px;
            margin: 2px;
        }

        /* 评分 */
        .rating {
            color: #ffc107;
            font-size: 20px;
        }

        /* 步骤条 */
        .steps {
            display: flex;
            justify-content: space-between;
            margin: 30px 0;
        }

        .step {
            flex: 1;
            text-align: center;
            position: relative;
        }

        .step::after {
            content: '';
            position: absolute;
            top: 20px;
            left: 50%;
            right: -50%;
            height: 2px;
            background: var(--border-color);
            z-index: -1;
        }

        .step:last-child::after {
            display: none;
        }

        .step.active::after {
            background: var(--accent-color);
        }

        .step-circle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: white;
            border: 2px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 10px;
            font-weight: bold;
        }

        .step.active .step-circle {
            background: var(--accent-color);
            color: white;
            border-color: var(--accent-color);
        }

        .step.completed .step-circle {
            background: var(--success-color);
            color: white;
            border-color: var(--success-color);
        }

        /* 模态框样式 */
        .modal {
            display: none;
            position: fixed;
            z-index: 9999;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            overflow: auto;
            background-color: rgba(0, 0, 0, 0.5);
            animation: fadeIn 0.3s;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        .modal-content {
            background-color: #fefefe;
            margin: 5% auto;
            padding: 0;
            border: 1px solid #888;
            width: 90%;
            max-width: 600px;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            animation: slideDown 0.3s;
        }

        @keyframes slideDown {
            from {
                transform: translateY(-50px);
                opacity: 0;
            }
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        .modal-header {
            padding: 20px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 8px 8px 0 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .modal-header h3 {
            margin: 0;
            font-size: 20px;
        }

        .modal-body {
            padding: 20px;
            max-height: 60vh;
            overflow-y: auto;
        }

        .modal-footer {
            padding: 15px 20px;
            background-color: #f8f9fa;
            border-radius: 0 0 8px 8px;
            text-align: right;
            border-top: 1px solid #dee2e6;
        }

        .modal-footer button {
            margin-left: 10px;
        }

        .close {
            color: white;
            font-size: 28px;
            font-weight: bold;
            cursor: pointer;
            line-height: 1;
            transition: color 0.3s;
        }

        .close:hover,
        .close:focus {
            color: #ddd;
        }

        /* 权限模块样式 */
        .permission-module {
            margin-bottom: 20px;
            border: 1px solid #ddd;
            padding: 15px;
            border-radius: 5px;
            background-color: #f9f9f9;
        }

        .permission-module h4 {
            margin-top: 0;
            border-bottom: 2px solid var(--accent-color);
            padding-bottom: 10px;
            color: var(--primary-color);
        }

        .permission-items {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 10px;
            margin-top: 10px;
        }

        .permission-items label {
            padding: 8px;
            background-color: white;
            border: 1px solid #e0e0e0;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
        }

        .permission-items label:hover {
            background-color: #f0f8ff;
            border-color: var(--accent-color);
        }

        .permission-items input[type="checkbox"] {
            margin-right: 8px;
            cursor: pointer;
        }

        .module-checkbox {
            margin-right: 8px;
            cursor: pointer;
            transform: scale(1.2);
        }

        /* 按钮默认样式 */
        .btn-default-custom {
            background-color: #6c757d;
            color: white;
            border: none;
        }

        .btn-default-custom:hover {
            background-color: #5a6268;
        }