:root {
            --primary-color: #1e3a8a;
            --secondary-color: #3b82f6;
            --accent-color: #10b981;
            --dark-color: #0f172a;
            --light-color: #f8fafc;
            --gray-color: #64748b;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.8;
            color: #333;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--dark-color);
        }
        .navbar {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color) !important;
        }
        .nav-link {
            font-weight: 600;
            color: var(--dark-color) !important;
            margin: 0 0.5rem;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 8rem 0 6rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            top: -100px;
            right: -100px;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: var(--accent-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            height: 100%;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s, box-shadow 0.3s;
            border: 1px solid #e2e8f0;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .stats-section {
            background: linear-gradient(rgba(30, 58, 138, 0.9), rgba(30, 58, 138, 0.95)), url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-attachment: fixed;
            color: white;
            padding: 6rem 0;
        }
        .stat-item h3 {
            color: white;
            font-size: 3rem;
            font-weight: 800;
        }
        .btn-primary {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 8px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
        }
        .footer {
            background: var(--dark-color);
            color: #cbd5e1;
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
        }
        .flink {
            display: inline-block;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 6px;
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            color: #94a3b8;
            text-decoration: none;
            transition: all 0.3s;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .flink:hover {
            background: rgba(255, 255, 255, 0.1);
            color: white;
            transform: translateY(-3px);
        }
        .news-card {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-10px);
        }
        .team-member {
            text-align: center;
            padding: 2rem;
        }
        .team-member img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 1.5rem;
            border: 5px solid #e2e8f0;
        }
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 3px;
            background: var(--secondary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background: var(--primary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--secondary-color);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 6rem 0 4rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        .contact-form .form-control {
            padding: 1rem;
            border-radius: 8px;
            border: 1px solid #cbd5e1;
            margin-bottom: 1.5rem;
        }
        .contact-form .form-control:focus {
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25);
        }
        .map-container {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }