:root {
            --primary: #1a365d;
            --secondary: #2d9cdb;
            --accent: #e74c3c;
            --light: #f8f9fa;
            --dark: #343a40;
            --success: #27ae60;
        }
        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(--primary);
        }
        .navbar {
            background-color: rgba(26, 54, 93, 0.95);
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            padding-top: 1rem;
            padding-bottom: 1rem;
        }
        .navbar.scrolled {
            padding-top: 0.5rem;
            padding-bottom: 0.5rem;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(45, 156, 219, 0.85)), url('https://images.unsplash.com/photo-1551958219-acbc608c6377?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 10rem 0;
            position: relative;
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary);
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            border-radius: 12px;
            overflow: hidden;
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            background: linear-gradient(135deg, var(--secondary), #1a365d);
            color: white;
        }
        .feature-icon {
            font-size: 2rem;
        }
        .stat-box {
            background: linear-gradient(135deg, var(--primary), #2d3748);
            color: white;
            padding: 2.5rem;
            border-radius: 15px;
            text-align: center;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 0.5rem;
        }
        .team-member {
            text-align: center;
            margin-bottom: 2rem;
        }
        .team-img {
            width: 180px;
            height: 180px;
            object-fit: cover;
            border-radius: 50%;
            margin: 0 auto 1.5rem;
            border: 5px solid #f1f5f9;
        }
        .news-card {
            border-left: 5px solid var(--secondary);
            transition: all 0.3s ease;
        }
        .news-card:hover {
            border-left-color: var(--accent);
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background: #f8f9fa;
            border-radius: 50px;
            color: var(--primary);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
            font-weight: 500;
        }
        .flink:hover {
            background: var(--secondary);
            color: white;
            transform: translateY(-3px);
            border-color: var(--secondary);
        }
        .contact-box {
            padding: 2rem;
            border-radius: 15px;
            background: #f8f9fa;
            height: 100%;
            transition: transform 0.3s ease;
        }
        .contact-box:hover {
            transform: translateY(-5px);
        }
        .footer {
            background-color: var(--primary);
            color: #cbd5e0;
            padding-top: 4rem;
        }
        .footer a {
            color: #cbd5e0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: white;
        }
        .social-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.1);
            color: white;
            margin-right: 10px;
            transition: all 0.3s ease;
        }
        .social-icon:hover {
            background: var(--secondary);
            transform: translateY(-3px);
        }
        .btn-primary {
            background: linear-gradient(to right, var(--primary), var(--secondary));
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(45, 156, 219, 0.3);
        }
        .form-control, .form-select {
            padding: 12px 20px;
            border-radius: 10px;
            border: 1px solid #ddd;
            transition: all 0.3s ease;
        }
        .form-control:focus, .form-select:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 0.25rem rgba(45, 156, 219, 0.25);
        }
        .timeline {
            position: relative;
            padding-left: 2rem;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
            padding-left: 2rem;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: -2.5rem;
            top: 0.5rem;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid white;
            box-shadow: 0 0 0 3px var(--secondary);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 6rem 0;
            }
            .stat-number {
                font-size: 2.5rem;
            }
            .section-title:after {
                width: 60px;
            }
        }