:root {
            --primary-color: #0056b3;
            --secondary-color: #17a2b8;
            --dark-color: #343a40;
            --light-color: #f8f9fa;
            --accent-color: #ffc107;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--dark-color);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar {
            box-shadow: 0 2px 10px rgba(0,0,0,.1);
            transition: all 0.3s ease;
            padding-top: 1rem;
            padding-bottom: 1rem;
        }
        .navbar.scrolled {
            padding-top: 0.5rem;
            padding-bottom: 0.5rem;
            background-color: rgba(255,255,255,0.98) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 84, 179, 0.85), rgba(0, 84, 179, 0.9)), url('https://images.unsplash.com/photo-1516321318423-f06f85e504b3?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 8rem 0;
            margin-top: 76px;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 3rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 4px;
            background-color: var(--primary-color);
        }
        .section-title.text-center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(0, 86, 179, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .card {
            border: none;
            box-shadow: 0 5px 15px rgba(0,0,0,.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,.1);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .service-card .card-body {
            padding: 2rem;
        }
        .bg-light-alt {
            background-color: #f8fafc;
        }
        .stats-section {
            background: linear-gradient(rgba(23, 162, 184, 0.9), rgba(23, 162, 184, 0.95)), url('https://images.unsplash.com/photo-1552664730-d307ca884978?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 5rem 0;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }
        .flink {
            display: inline-block;
            background-color: #f1f5f9;
            color: #475569;
            padding: 0.5rem 1.5rem;
            margin: 0.5rem;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #e2e8f0;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .footer {
            background-color: var(--dark-color);
            color: #adb5bd;
            padding-top: 4rem;
            padding-bottom: 2rem;
        }
        .footer a {
            color: #adb5bd;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: white;
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255,255,255,0.1);
            border-radius: 50%;
            margin-right: 0.5rem;
        }
        .social-icons a:hover {
            background-color: var(--primary-color);
        }
        .copyright {
            border-top: 1px solid #495057;
            padding-top: 1.5rem;
            margin-top: 3rem;
            font-size: 0.9rem;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: 50px;
        }
        .btn-primary:hover {
            background-color: #004494;
            border-color: #004494;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .contact-info i {
            width: 24px;
            margin-right: 10px;
            color: var(--primary-color);
        }
        .form-control, .form-select {
            padding: 0.75rem 1rem;
            border: 1px solid #dee2e6;
            border-radius: 0.5rem;
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(0, 86, 179, 0.25);
        }
        .news-date {
            font-size: 0.9rem;
            color: #6c757d;
            margin-bottom: 0.5rem;
        }
        .timeline {
            position: relative;
            padding-left: 2rem;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background-color: var(--primary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2rem;
            padding-left: 1.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -0.5rem;
            top: 0.5rem;
            width: 1rem;
            height: 1rem;
            border-radius: 50%;
            background-color: var(--primary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.2);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 5rem 0;
                text-align: center;
            }
            .section-title::after {
                left: 50%;
                transform: translateX(-50%);
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }