:root {
            --primary-dark: #1d2129;
            --primary-gradient: linear-gradient(135deg, #5B9BD5 0%, #93C5FD 40%, #E8F4FF 100%);
            --primary-color: #0055ff;
            --primary-hover: #1664ff;
            --accent-color: #06b6d4;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --card-shadow: 0 2px 12px rgba(0,0,0,0.06);
            --card-shadow-hover: 0 12px 40px rgba(0,85,255,0.2);
            --sidebar-width: 260px;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-muted: #94a3b8;
            --border-color: #e2e8f0;
            --border-radius: 12px;
            --risk-high: #ef4444;
            --risk-mid: #3b82f6;
            --risk-low: #22c55e;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
            --chong-bg: linear-gradient(135deg, #fef3c7, #fde68a);
            --wen-bg: linear-gradient(135deg, #dbeafe, #bfdbfe);
            --bao-bg: linear-gradient(135deg, #d1fae5, #a7f3d0);
            --transition-fast: 0.15s ease;
            --transition-normal: 0.25s ease;
            --transition-slow: 0.4s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background: var(--bg-light);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
        }

        /* 页面淡入动画 */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        @keyframes slideInLeft {
            from { opacity: 0; transform: translateX(-20px); }
            to { opacity: 1; transform: translateX(0); }
        }
        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.02); }
        }
        @keyframes shimmer {
            0% { background-position: -200% 0; }
            100% { background-position: 200% 0; }
        }

        /* 骨架屏加载效果 */
        .skeleton {
            background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
            background-size: 200% 100%;
            animation: shimmer 1.5s infinite;
            border-radius: 8px;
        }

        /* ========== 侧边栏 ========== */
        .sidebar {
            position: fixed;
            left: 0; top: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary-dark);
            color: #fff;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            transition: transform var(--transition-normal);
            box-shadow: 4px 0 20px rgba(0,0,0,0.15);
        }

        .sidebar-logo {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .sidebar-logo .logo-icon {
            width: 44px; height: 44px;
            background: linear-gradient(135deg, #5B9BD5 0%, #93C5FD 40%, #E8F4FF 80%, #ffffff 100%);
            border-radius: 12px;
            display: flex; align-items: center; justify-content: center;
            font-size: 20px;
            margin-bottom: 12px;
            box-shadow: 0 2px 8px rgba(0, 85, 255, 0.25);
            transition: transform var(--transition-fast);
        }

        .sidebar-logo .logo-icon img {
            filter: drop-shadow(0 2px 4px rgba(30,58,95,0.3));
        }

        .sidebar-logo:hover .logo-icon {
            transform: scale(1.05) rotate(3deg);
        }

        .sidebar-logo h5 {
            font-size: 16px;
            font-weight: 700;
            margin: 0;
            letter-spacing: 0.5px;
            text-shadow: 0 1px 3px rgba(0,85,255,0.2);
        }

        .sidebar-logo small {
            color: rgba(255,255,255,0.45);
            font-size: 12px;
            text-shadow: 0 1px 2px rgba(0,85,255,0.15);
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 12px;
            overflow-y: auto;
        }

        .sidebar-nav .nav-label {
            font-size: 11px;
            text-transform: uppercase;
            color: rgba(255,255,255,0.3);
            letter-spacing: 1.5px;
            padding: 12px 16px 8px;
            font-weight: 600;
        }

        .nav-item-link {
            display: flex;
            align-items: center;
            padding: 11px 16px;
            border-radius: 10px;
            color: rgba(255,255,255,0.65);
            text-decoration: none;
            font-size: 14px;
            margin-bottom: 2px;
            transition: all 0.2s ease;
            cursor: pointer;
        }

        .nav-item-link:hover {
            background: rgba(255,255,255,0.08);
            color: #fff;
        }

        .nav-item-link.active {
            background: rgba(0,85,255,0.15) !important;
            color: #1664ff !important;
            border-left: 3px solid #0055ff;
            box-shadow: none;
        }

        .nav-item-link i {
            width: 20px;
            text-align: center;
            margin-right: 12px;
            font-size: 15px;
        }

        .nav-item-link .badge-nav {
            margin-left: auto;
            background: rgba(255,255,255,0.15);
            padding: 2px 8px;
            border-radius: 20px;
            font-size: 11px;
        }

        .sidebar-footer {
            padding: 16px;
            border-top: 1px solid rgba(255,255,255,0.08);
        }

        .user-info-box {
            display: flex;
            align-items: center;
            padding: 10px 12px;
            border-radius: 10px;
            background: rgba(255,255,255,0.05);
            margin-bottom: 10px;
        }

        .user-avatar {
            width: 36px; height: 36px;
            border-radius: 10px;
            background: var(--primary-gradient);
            display: flex; align-items: center; justify-content: center;
            font-weight: 700;
            font-size: 14px;
            margin-right: 10px;
            flex-shrink: 0;
        }

        .user-info-box .user-name {
            font-size: 13px;
            font-weight: 600;
        }

        .user-info-box .user-role {
            font-size: 11px;
            color: rgba(255,255,255,0.4);
        }

        .btn-logout {
            width: 100%;
            padding: 9px;
            border-radius: 10px;
            border: 1px solid rgba(255,255,255,0.1);
            background: transparent;
            color: rgba(255,255,255,0.5);
            font-size: 13px;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-logout:hover {
            background: rgba(239,68,68,0.15);
            border-color: rgba(239,68,68,0.3);
            color: #ef4444;
        }

        /* ========== 主内容区 ========== */
        .main-content {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
            padding: 0;
        }

        /* 顶部栏 */
        .topbar {
            background: #fff;
            padding: 14px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .topbar-left {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .topbar-left h6 {
            margin: 0;
            font-weight: 700;
            font-size: 16px;
        }

        .topbar-left .breadcrumb-custom {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .topbar-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-icon-top {
            width: 38px; height: 38px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            background: #fff;
            display: flex; align-items: center; justify-content: center;
            cursor: pointer;
            color: var(--text-secondary);
            transition: all 0.2s;
            position: relative;
        }

        .btn-icon-top:hover {
            border-color: #0055ff;
            color: #0055ff;
            background: rgba(0,85,255,0.05);
        }

        .btn-icon-top .dot {
            position: absolute;
            top: 8px; right: 8px;
            width: 7px; height: 7px;
            background: #ef4444;
            border-radius: 50%;
            border: 2px solid #fff;
        }

        /* ========== 欢迎横幅 ========== */
        .welcome-banner {
            margin: 24px 32px 0;
            padding: 36px 40px;
            border-radius: 20px;
            background: var(--primary-gradient);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .welcome-banner::before {
            content: '';
            position: absolute;
            top: -60px; right: -40px;
            width: 260px; height: 260px;
            background: rgba(255,255,255,0.08);
            border-radius: 50%;
        }

        .welcome-banner::after {
            content: '';
            position: absolute;
            bottom: -80px; right: 100px;
            width: 200px; height: 200px;
            background: rgba(255,255,255,0.05);
            border-radius: 50%;
        }

        .welcome-banner h3 {
            font-weight: 700;
            font-size: 24px;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .welcome-banner p {
            opacity: 0.85;
            font-size: 14px;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .welcome-stats {
            display: flex;
            gap: 40px;
            position: relative;
            z-index: 1;
        }

        .welcome-stat-item {
            text-align: center;
        }

        .welcome-stat-item .stat-num {
            font-size: 28px;
            font-weight: 800;
            display: block;
        }

        .welcome-stat-item .stat-label {
            font-size: 12px;
            opacity: 0.7;
        }

        /* ========== 内容区域 ========== */
        .content-body {
            padding: 24px 32px 40px;
        }

        /* 卡片通用 */
        .card-modern {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
            transition: all 0.3s ease;
            overflow: hidden;
        }

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

        .card-modern .card-header-modern {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .card-modern .card-header-modern h6 {
            margin: 0;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .card-modern .card-header-modern h6 i {
            color: #0055ff;
        }

        .card-modern .card-body-modern {
            padding: 24px;
        }

        /* ========== 表单样式 ========== */
        .form-section-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .form-section-title::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border-color);
        }

        .form-label-custom {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }

        .form-control-custom {
            border: 1.5px solid var(--border-color);
            border-radius: 10px;
            padding: 10px 14px;
            font-size: 14px;
            transition: all 0.2s;
            background: #fafbfc;
        }

        .form-control-custom:focus {
            border-color: #0055ff;
            box-shadow: 0 0 0 3px rgba(0,85,255,0.12);
            background: #fff;
        }

        /* 科目按钮 */
        .subject-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .subject-btn {
            padding: 10px 20px;
            border-radius: 12px;
            border: 2px solid var(--border-color);
            background: #fff;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--text-secondary);
        }

        .subject-btn:hover {
            border-color: #a5b4fc;
            color: #0055ff;
            background: rgba(0,85,255,0.04);
        }

        .subject-btn.active {
            border-color: #0055ff;
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 15px rgba(0,85,255,0.3);
        }

        .subject-btn i {
            font-size: 13px;
        }

        /* 提交按钮 */
        .btn-submit-primary {
            padding: 12px 36px;
            border-radius: 12px;
            border: none;
            background: var(--primary-gradient);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 4px 15px rgba(0,85,255,0.3);
        }

        .btn-submit-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(0,85,255,0.4);
        }

        .btn-submit-primary:active {
            transform: translateY(0);
        }

        /* ========== 推荐结果 ========== */
        .risk-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
        }

        .risk-tag.high {
            background: rgba(239,68,68,0.1);
            color: #ef4444;
        }

        .risk-tag.mid {
            background: rgba(59,130,246,0.1);
            color: #3b82f6;
        }

        .risk-tag.low {
            background: rgba(34,197,94,0.1);
            color: #22c55e;
        }

        .result-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            padding: 20px 24px;
            margin-bottom: 14px;
            transition: all var(--transition-normal);
            cursor: pointer;
            animation: fadeInUp 0.5s ease forwards;
            opacity: 0;
        }
        .result-card:nth-child(1) { animation-delay: 0.05s; }
        .result-card:nth-child(2) { animation-delay: 0.1s; }
        .result-card:nth-child(3) { animation-delay: 0.15s; }
        .result-card:nth-child(4) { animation-delay: 0.2s; }
        .result-card:nth-child(5) { animation-delay: 0.25s; }
        .result-card:nth-child(n+6) { animation-delay: 0.3s; }

        .result-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary-color);
        }
        .result-card:hover .school-name {
            color: var(--primary-color);
        }

        .result-card .school-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .result-card .school-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .result-card .school-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .result-card .score-range {
            display: flex;
            gap: 24px;
            padding: 12px 16px;
            background: #f8fafc;
            border-radius: 10px;
            font-size: 13px;
        }

        .result-card .score-range .item {
            display: flex;
            flex-direction: column;
        }

        .result-card .score-range .item .label {
            font-size: 11px;
            color: var(--text-secondary);
            margin-bottom: 2px;
        }

        .result-card .score-range .item .value {
            font-weight: 700;
            color: var(--text-primary);
        }

        .result-card .actions-row {
            display: flex;
            gap: 8px;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
        }

        .btn-action-sm {
            padding: 6px 14px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background: #fff;
            font-size: 12px;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 5px;
            color: var(--text-secondary);
        }

        .btn-action-sm:hover {
            border-color: #0055ff;
            color: #0055ff;
        }

        .btn-action-sm.favorited {
            border-color: #f59e0b;
            color: #f59e0b;
            background: rgba(245,158,11,0.06);
        }

        .btn-action-sm.favorited i {
            font-weight: 900;
        }

        /* 专业列表折叠 */
        .major-list {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .major-list.expanded {
            max-height: 600px;
        }

        .major-list table {
            width: 100%;
            font-size: 13px;
            margin-top: 12px;
        }

        .major-list table th {
            background: #f8fafc;
            padding: 8px 12px;
            text-align: left;
            font-weight: 600;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color);
        }

        .major-list table td {
            padding: 8px 12px;
            border-bottom: 1px solid #f1f5f9;
        }

        /* ========== 多年数据可视化样式 ========== */

        /* 院校历年分数线摘要 */
        .multiyear-summary {
            background: linear-gradient(135deg, #f0f4ff 0%, #e8eeff 100%);
            border-radius: 10px;
            padding: 12px 16px;
            margin-top: 12px;
            margin-bottom: 8px;
            border: 1px solid rgba(99, 102, 241, 0.15);
        }

        .multiyear-summary-title {
            font-size: 13px;
            font-weight: 600;
            color: #0055ff;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .multiyear-summary-body {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .multiyear-years {
            font-weight: 600;
            color: #475569;
        }

        .multiyear-scores {
            font-weight: 500;
            color: #0055ff;
            letter-spacing: 0.5px;
        }

        /* 历年分数单元格 */
        .multiyear-scores-cell {
            font-size: 12px;
            color: #475569;
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        /* 涨跌标签 */
        .score-up {
            color: #16a34a;
            font-weight: 700;
            font-size: 13px;
        }

        .score-down {
            color: #dc2626;
            font-weight: 700;
            font-size: 13px;
        }

        .score-stable {
            color: #9ca3af;
            font-weight: 600;
            font-size: 13px;
        }

        /* 趋势标签 */
        .trend-tag {
            display: inline-flex;
            align-items: center;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 11px;
            font-weight: 600;
            white-space: nowrap;
        }

        .trend-tag.trend-rising {
            background: rgba(220, 38, 38, 0.1);
            color: #dc2626;
            border: 1px solid rgba(220, 38, 38, 0.2);
        }

        .trend-tag.trend-falling {
            background: rgba(16, 163, 74, 0.1);
            color: #16a34a;
            border: 1px solid rgba(16, 163, 74, 0.2);
        }

        .trend-tag.trend-stable {
            background: rgba(99, 102, 241, 0.1);
            color: #0055ff;
            border: 1px solid rgba(99, 102, 241, 0.2);
        }

        /* 大小年风险标签 */
        .risk-tag {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 11px;
            font-weight: 600;
            white-space: nowrap;
        }

        .risk-tag.risk-high {
            background: rgba(249, 115, 22, 0.12);
            color: #ea580c;
            border: 1px solid rgba(249, 115, 22, 0.25);
        }

        .risk-tag.risk-mid {
            background: rgba(234, 179, 8, 0.12);
            color: #ca8a04;
            border: 1px solid rgba(234, 179, 8, 0.25);
        }

        .risk-tag.risk-low {
            background: rgba(16, 163, 74, 0.1);
            color: #16a34a;
            border: 1px solid rgba(16, 163, 74, 0.2);
        }

        /* 暗色模式下的多年数据样式 */
        body.dark-mode .multiyear-summary {
            background: linear-gradient(135deg, #1e293b 0%, #1a2332 100%);
            border-color: rgba(99, 102, 241, 0.25);
        }

        body.dark-mode .multiyear-summary-title {
            color: #387bff;
        }

        body.dark-mode .multiyear-scores {
            color: #387bff;
        }

        body.dark-mode .multiyear-years {
            color: #94a3b8;
        }

        body.dark-mode .multiyear-scores-cell {
            color: #94a3b8;
        }

        body.dark-mode .trend-tag.trend-rising {
            background: rgba(220, 38, 38, 0.2);
            color: #f87171;
            border-color: rgba(220, 38, 38, 0.3);
        }

        body.dark-mode .trend-tag.trend-falling {
            background: rgba(16, 163, 74, 0.2);
            color: #4ade80;
            border-color: rgba(16, 163, 74, 0.3);
        }

        body.dark-mode .trend-tag.trend-stable {
            background: rgba(99, 102, 241, 0.2);
            color: #387bff;
            border-color: rgba(99, 102, 241, 0.3);
        }

        body.dark-mode .risk-tag.risk-high {
            background: rgba(249, 115, 22, 0.2);
            color: #fb923c;
            border-color: rgba(249, 115, 22, 0.35);
        }

        body.dark-mode .risk-tag.risk-mid {
            background: rgba(234, 179, 8, 0.2);
            color: #facc15;
            border-color: rgba(234, 179, 8, 0.35);
        }

        body.dark-mode .risk-tag.risk-low {
            background: rgba(16, 163, 74, 0.2);
            color: #4ade80;
            border-color: rgba(16, 163, 74, 0.3);
        }

        /* 导出按钮组 */
        .export-btn-group {
            display: flex;
            gap: 8px;
        }

        .btn-export {
            padding: 8px 16px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            background: #fff;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--text-secondary);
            font-weight: 600;
        }

        .btn-export:hover {
            border-color: #0055ff;
            color: #0055ff;
            background: rgba(0,85,255,0.04);
        }

        /* ========== 图表区域 ========== */
        .chart-container {
            position: relative;
            height: 280px;
        }

        /* ========== 历史记录 ========== */
        .history-item {
            display: flex;
            align-items: center;
            padding: 12px 16px;
            border-radius: 10px;
            transition: background 0.2s;
            cursor: pointer;
            gap: 12px;
        }

        .history-item:hover {
            background: #f8fafc;
        }

        .history-item .history-icon {
            width: 38px; height: 38px;
            border-radius: 10px;
            background: rgba(0,85,255,0.1);
            display: flex; align-items: center; justify-content: center;
            color: #0055ff;
            flex-shrink: 0;
        }

        .history-item .history-text {
            flex: 1;
        }

        .history-item .history-text .title {
            font-size: 13px;
            font-weight: 600;
        }

        .history-item .history-text .time {
            font-size: 11px;
            color: var(--text-secondary);
        }

        /* ========== 暗色模式 ========== */
        body.dark-mode {
            --bg-light: #0f172a;
            --card-shadow: 0 2px 12px rgba(0,0,0,0.3);
            --card-shadow-hover: 0 8px 30px rgba(0,85,255,0.25);
            --text-primary: #e2e8f0;
            --text-secondary: #94a3b8;
            --border-color: #1e293b;
            background: #0f172a;
            color: #e2e8f0;
        }

        body.dark-mode .topbar {
            background: #1e293b;
            border-color: #334155;
        }

        body.dark-mode .card-modern,
        body.dark-mode .result-card {
            background: #1e293b;
            border-color: #334155;
        }

        body.dark-mode .form-control-custom {
            background: #0f172a;
            border-color: #334155;
            color: #e2e8f0;
        }

        body.dark-mode .form-control-custom:focus {
            background: #1e293b;
        }

        body.dark-mode .subject-btn {
            background: #1e293b;
            border-color: #334155;
            color: #94a3b8;
        }

        body.dark-mode .subject-btn:hover {
            border-color: #0055ff;
            color: #a5b4fc;
        }

        body.dark-mode .btn-action-sm,
        body.dark-mode .btn-export {
            background: #0f172a;
            border-color: #334155;
            color: #94a3b8;
        }

        body.dark-mode .result-card .score-range {
            background: #0f172a;
        }

        body.dark-mode .major-list table th {
            background: #0f172a;
        }

        body.dark-mode .major-list table td {
            border-color: #334155;
        }

        body.dark-mode .history-item:hover {
            background: #334155;
        }

        body.dark-mode .welcome-banner {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
        }

        /* 暗色模式增强 - 侧边栏和卡片 */
        body.dark-mode .sidebar {
            background: #0a0f1a;
        }
        body.dark-mode .sidebar .nav-item:hover {
            background: rgba(255,255,255,0.06);
        }
        body.dark-mode .sidebar .nav-item.active {
            background: rgba(0, 85, 255, 0.2) !important;
            color: #1664ff !important;
            border-left: 3px solid #0055ff;
        }
        body.dark-mode .stat-card {
            background: #1e293b;
            border-color: #334155;
        }
        body.dark-mode .stat-card:hover {
            box-shadow: 0 12px 40px rgba(0,85,255,0.15);
        }
        body.dark-mode .filter-bar {
            background: #1e293b;
            border-color: #334155;
        }
        body.dark-mode .school-name {
            color: #e2e8f0;
        }
        body.dark-mode .school-info {
            color: #94a3b8;
        }
        body.dark-mode .btn-primary {
            box-shadow: 0 4px 15px rgba(0,85,255,0.2);
        }
        /* 暗色模式平滑过渡 */
        body, body.dark-mode .card-modern, body.dark-mode .result-card,
        body.dark-mode .stat-card, body.dark-mode .form-control-custom,
        body.dark-mode .sidebar, body.dark-mode .topbar, body.dark-mode .welcome-banner {
            transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
        }

        /* ========== 加载动画 ========== */
        .loading-overlay {
            position: fixed;
            top: 0; left: 0;
            width: 100%; height: 100%;
            background: rgba(15,23,42,0.5);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 9999;
            backdrop-filter: blur(6px);
            opacity: 0;
            transition: opacity var(--transition-normal);
        }

        .loading-overlay.show {
            display: flex;
            opacity: 1;
        }

        .loading-spinner {
            width: 56px; height: 56px;
            border: 4px solid rgba(255,255,255,0.15);
            border-top-color: #0055ff;
            border-right-color: #387bff;
            border-radius: 50%;
            animation: spin 0.7s linear infinite;
            box-shadow: 0 0 20px rgba(0,85,255,0.3);
        }

        .loading-text {
            margin-top: 20px;
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            text-align: center;
            animation: pulse 1.5s ease infinite;
        }

        .loading-dots::after {
            content: '';
            animation: loadingDots 1.5s steps(4, end) infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        @keyframes loadingDots {
            0% { content: ''; }
            25% { content: '.'; }
            50% { content: '..'; }
            75% { content: '...'; }
        }

        /* ========== 骨架屏加载效果 ========== */
        .skeleton-container {
            padding: 20px;
        }
        .skeleton-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            padding: 20px 24px;
            margin-bottom: 14px;
            overflow: hidden;
        }
        .skeleton-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .skeleton-avatar {
            width: 40px; height: 40px;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .skeleton-title {
            height: 18px;
            width: 60%;
            border-radius: 4px;
        }
        .skeleton-line {
            height: 14px;
            margin-bottom: 10px;
            border-radius: 4px;
        }
        .skeleton-line.short { width: 40%; }
        .skeleton-line.medium { width: 70%; }
        .skeleton-line.long { width: 90%; }
        .skeleton-badge {
            width: 60px; height: 24px;
            border-radius: 12px;
            display: inline-block;
        }

        /* ========== 视觉增强动画 ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }

        @keyframes shimmer {
            0% { background-position: -200% 0; }
            100% { background-position: 200% 0; }
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-5px); }
        }

        /* 卡片入场动画 */
        .result-card {
            animation: fadeInUp 0.4s ease forwards;
            opacity: 0;
        }

        .result-card:nth-child(1) { animation-delay: 0.05s; }
        .result-card:nth-child(2) { animation-delay: 0.1s; }
        .result-card:nth-child(3) { animation-delay: 0.15s; }
        .result-card:nth-child(4) { animation-delay: 0.2s; }
        .result-card:nth-child(5) { animation-delay: 0.25s; }
        .result-card:nth-child(n+6) { animation-delay: 0.3s; }

        /* 梯度标签增强样式 */
        .gradient-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            transition: all var(--transition-fast);
        }

        .gradient-tag.chong {
            background: linear-gradient(135deg, #f97316, #fb923c);
            color: #fff;
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
        }

        .gradient-tag.wen {
            background: linear-gradient(135deg, #3b82f6, #60a5fa);
            color: #fff;
            box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
        }

        .gradient-tag.bao {
            background: linear-gradient(135deg, #22c55e, #4ade80);
            color: #fff;
            box-shadow: 0 2px 8px rgba(34, 197, 94, 0.3);
        }

        .gradient-tag:hover {
            transform: scale(1.08);
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        /* 通用按钮样式 */
        .btn-primary {
            background: var(--primary-gradient);
            color: #fff;
            border: none;
            padding: 12px 24px;
            border-radius: var(--border-radius);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 15px rgba(0,85,255,0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0,85,255,0.4);
        }
        .btn-primary:active {
            transform: translateY(0);
        }

        /* 输入框优化 */
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border-color);
            border-radius: var(--border-radius);
            font-size: 14px;
            transition: all var(--transition-fast);
            background: var(--bg-card);
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(0,85,255,0.15);
        }
        .form-input:hover:not(:focus) {
            border-color: var(--text-muted);
        }
        }

        body.dark-mode .skeleton {
            background: linear-gradient(90deg, #334155 25%, #475569 50%, #334155 75%);
            background-size: 200% 100%;
        }

        /* 统计卡片悬浮动画 */
        .stat-card-modern {
            transition: all 0.3s ease;
        }

        .stat-card-modern:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(99, 102, 241, 0.15);
        }

        .stat-card-modern .stat-icon {
            transition: all 0.3s ease;
        }

        .stat-card-modern:hover .stat-icon {
            transform: scale(1.1) rotate(5deg);
        }

        /* 按钮点击波纹效果 */
        .btn-ripple {
            position: relative;
            overflow: hidden;
        }

        .btn-ripple::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            background: rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            transition: width 0.4s ease, height 0.4s ease;
        }

        .btn-ripple:active::after {
            width: 200%;
            height: 200%;
        }

        /* 成功动画 */
        @keyframes successPulse {
            0% { transform: scale(0.8); opacity: 0; }
            50% { transform: scale(1.1); }
            100% { transform: scale(1); opacity: 1; }
        }

        .success-animation {
            animation: successPulse 0.5s ease forwards;
        }

        /* ========== Toast ========== */
        .toast-container-custom {
            position: fixed;
            top: 24px;
            right: 24px;
            z-index: 10000;
        }

        .toast-msg {
            padding: 14px 20px;
            border-radius: 12px;
            background: #fff;
            box-shadow: 0 8px 30px rgba(0,0,0,0.15);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            animation: slideIn 0.3s ease;
            min-width: 280px;
        }

        body.dark-mode .toast-msg {
            background: #1e293b;
            color: #e2e8f0;
        }
        body.dark-mode .card-header-modern { background: #1e293b; border-color: #334155; }
        body.dark-mode .card-header-modern h6 { color: #e2e8f0; }
        body.dark-mode .btn-icon-top { color: #cbd5e1; }
        body.dark-mode .btn-icon-top:hover { color: #f1f5f9; background: rgba(255,255,255,0.1); }
        body.dark-mode .welcome-stat-item .stat-num { color: #e2e8f0; }
        body.dark-mode .welcome-stat-item .stat-label { color: #94a3b8; }
        body.dark-mode .form-label-custom { color: #cbd5e1; }
        body.dark-mode .form-section-title { color: #e2e8f0; }
        body.dark-mode .empty-state { color: #64748b; }
        body.dark-mode .page-header-bar { background: #1e293b; }
        body.dark-mode .btn-action-sm { background: #334155; color: #e2e8f0; border-color: #475569; }
        body.dark-mode .btn-action-sm:hover { background: #475569; }

        .toast-msg.success { border-left: 4px solid #22c55e; }
        .toast-msg.error { border-left: 4px solid #ef4444; }
        .toast-msg.info { border-left: 4px solid #3b82f6; }

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

        /* ========== 空状态 ========== */
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-secondary);
        }

        .empty-state i {
            font-size: 48px;
            margin-bottom: 16px;
            opacity: 0.3;
        }

        .empty-state p {
            font-size: 14px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 992px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-toggle {
                display: flex !important;
            }
        }

    @media (max-width: 768px) {
        .topbar {
            padding: 8px 12px !important;
        }
        .topbar-left h5 {
            font-size: 0.85rem !important;
        }
        .topbar-right {
            gap: 6px !important;
        }
        .btn-icon-top {
            width: 32px !important;
            height: 32px !important;
            font-size: 14px !important;
        }
        .card-modern {
            padding: 14px !important;
        }
        .card-header-modern h6 {
            font-size: 0.85rem !important;
        }
        .form-row {
            flex-direction: column !important;
        }
        .form-row .col-md-4, .form-row .col-md-3 {
            width: 100% !important;
            margin-bottom: 8px;
        }
        .form-control-custom {
            font-size: 14px !important;
        }
        .stat-card {
            padding: 12px !important;
        }
        .stat-card .stat-value {
            font-size: 1.2rem !important;
        }
        .stat-card .stat-label {
            font-size: 0.75rem !important;
        }
    }

    @media (max-width: 576px) {
        .topbar-left .breadcrumb-custom {
            display: none !important;
        }
        .welcome-banner {
            padding: 16px !important;
        }
        .welcome-banner h4 {
            font-size: 1rem !important;
        }
        .welcome-banner p {
            font-size: 0.85rem !important;
        }
        .card-modern {
            margin-bottom: 10px !important;
        }
        .btn-action {
            padding: 6px 12px !important;
            font-size: 0.8rem !important;
        }
        .result-item {
            padding: 10px !important;
        }
        .result-item .school-name {
            font-size: 0.9rem !important;
        }
        /* 移动端按钮区域垂直堆叠 */
        .btn-group-top {
            flex-wrap: wrap;
            gap: 6px;
        }
    }

    /* ========== 360px 以下最小屏幕断点 ========== */
    @media (max-width: 360px) {
        .topbar {
            padding: 8px 10px !important;
        }
        .stat-grid {
            grid-template-columns: 1fr !important;
        }
        .welcome-banner {
            padding: 12px 10px !important;
        }
        .form-group {
            margin-bottom: 8px !important;
        }
        .form-control-custom {
            padding: 10px 12px !important;
            font-size: 16px !important; /* iOS 防止缩放 */
        }
        .btn {
            padding: 12px 16px !important;
        }
        .footer {
            padding: 12px 8px !important;
            font-size: 0.75rem;
        }
    }

        .mobile-toggle {
            display: none !important;
        }

        /* ========== 移动端触控优化 ========== */
/* 全局禁止双击缩放，防止触屏劫持利用延迟 */
html { touch-action: manipulation; }
/* 移动端所有可交互元素最小触控区域 44px（Apple HIG 标准） */
@media (hover: none) and (pointer: coarse) {
    .btn, .btn-primary, .btn-success, .btn-warning, .btn-danger,
    .btn-info, .btn-outline, .btn-action, .btn-icon-top,
    .nav-link, .sidebar-item, .dropdown-item, .list-group-item,
    .table-link, .action-link, .card-link, .clickable,
    .mobile-toggle, .theme-toggle, input[type="submit"],
    button, [role="button"], .pagination a, .pagination button {
        min-width: 44px;
        min-height: 44px;
    }
}

/* ========== 滚动条样式 ========== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: transparent; }
        ::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: #94a3b8; }
        body.dark-mode ::-webkit-scrollbar-thumb { background: #475569; }
    
    /* 夜间模式悬浮按钮 */
    .dark-mode-toggle-float {
        position: fixed; bottom: 16px; right: 16px; width: 48px; height: 48px;
        border-radius: 50%; background-color: #ffffff; border: none;
        box-shadow: 0 2px 8px rgba(0,0,0,0.15); cursor: pointer;
        display: flex; align-items: center; justify-content: center;
        z-index: 10000; transition: transform 0.2s, box-shadow 0.2s;
        font-size: 22px; line-height: 1; color: #333;
    }
    .dark-mode-toggle-float:hover { transform: scale(1.08); box-shadow: 0 4px 12px rgba(0,0,0,0.25); }
    .dark-mode-toggle-float:active { transform: scale(0.95); }

body.page-hidden *::after {
    animation-play-state: paused !important;
    transition: none !important;
}

/* ========== 反钓鱼安全标识样式 ========== */
#security-domain-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 13px;
    flex-wrap: wrap;
}
#security-domain-badge .security-domain-icon { font-size: 16px; }
#security-domain-badge .security-domain-text { color: #475569; font-weight: 500; }
#security-domain-badge .security-domain-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}
#security-domain-badge .badge-safe {
    background: #dcfce7;
    color: #166534;
}
#security-domain-badge .badge-warn {
    background: #fef3c7;
    color: #92400e;
}

/* 登录页安全提示 */
.login-security-note {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    margin-bottom: 16px;
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 8px;
    font-size: 13px;
    color: #0369a1;
    line-height: 1.4;
}
.login-security-note .security-icon { font-size: 16px; flex-shrink: 0; }

@media (max-width: 480px) {
    #security-domain-badge {
        padding: 8px 12px;
        font-size: 12px;
        flex-direction: column;
        gap: 4px;
    }
    .login-security-note {
        padding: 8px 12px;
        font-size: 12px;
    }
}

.loader {