body {
            background-color: #f8f9fa;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        .nav-container {
            display: flex;
            height: 100vh;
            overflow: hidden;
        }
        .left-nav {
            width: 280px;
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            color: white;
            overflow-y: auto;
            padding: 0;
        }
        .right-content {
            flex: 1;
            overflow-y: auto;
            padding: 5px 20px 20px 20px;
            background-color: #f8f9fa;
        }
        .dept-item {
            padding: 12px 20px;
            cursor: pointer;
            transition: all 0.3s;
            border-left: 4px solid transparent;
        }
        .dept-item:hover, .dept-item.active {
            background-color: rgba(255, 255, 255, 0.1);
            border-left: 4px solid #fff;
        }
        .dept-item.all {
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            margin-bottom: 10px;
        }
        .site-card {
            background: white;
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 15px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            transition: transform 0.2s;
            text-decoration: none !important;
            display: block;
            color: #343a40;
        }
        .site-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .site-name {
            font-size: 1.1rem;
            font-weight: 500;
            margin: 0;
        }
        /* 不同部门卡片颜色 */
        .tech { border-left: 4px solid #6f42c1; }
        .design { border-left: 4px solid #20c997; }
        .product { border-left: 4px solid #fd7e14; }
        .marketing { border-left: 4px solid #dc3545; }
        .hr { border-left: 4px solid #17a2b8; }
        .finance { border-left: 4px solid #ffc107; }
        .sales { border-left: 4px solid #e83e8c; }
        .support { border-left: 4px solid #28a745; }
        .ops { border-left: 4px solid #6610f2; }
        .legal { border-left: 4px solid #6c757d; }
        .research { border-left: 4px solid #20c997; }

        .search-container {
            margin-bottom: 20px;
        }
        .search-box {
            border-radius: 20px;
            padding: 10px 20px;
            border: 1px solid #dee2e6;
            box-shadow: none;
        }
        .search-box:focus {
            border-color: #2575fc;
            box-shadow: 0 0 0 0.25rem rgba(37, 117, 252, 0.25);
        }
        .header {
            padding: 0 0 15px 0;
            margin-bottom: 10px;
            border-bottom: 1px solid #e9ecef;
        }
        .header h1 {
            color: #2575fc;
            font-weight: 700;
        }