:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #fbbf24;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-light: #f9fafb;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', Arial, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            line-height: 1.3;
        }
        .navbar {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
            display: flex;
            align-items: center;
        }
        .navbar-brand i {
            color: var(--secondary-color);
            margin-right: 10px;
        }
        .nav-link {
            font-weight: 500;
            color: var(--text-dark) !important;
            margin: 0 0.5rem;
            padding: 0.5rem 1rem !important;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .nav-link:hover, .nav-link.active {
            background-color: var(--primary-color);
            color: white !important;
        }
        .hero-section {
            background: linear-gradient(rgba(30, 58, 138, 0.9), rgba(30, 58, 138, 0.8)), 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: 120px 0;
            position: relative;
            overflow: hidden;
        }
        .hero-content {
            max-width: 800px;
            margin: 0 auto;
        }
        .hero-title {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .hero-subtitle {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }
        .btn-primary-custom {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            color: white;
            padding: 0.8rem 2rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            background-color: #b91c1c;
            border-color: #b91c1c;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(220, 38, 38, 0.3);
        }
        .service-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            height: 100%;
            border: 1px solid #e5e7eb;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .card-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), #3b82f6);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 2rem;
        }
        .about-section {
            background-color: var(--bg-light);
            padding: 100px 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            color: var(--primary-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -10px;
            width: 60px;
            height: 4px;
            background-color: var(--secondary-color);
        }
        .section-title.text-center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .stats-section {
            background: linear-gradient(rgba(30, 58, 138, 0.9), rgba(30, 58, 138, 0.9)), url('https://images.unsplash.com/photo-1529900748604-07564a03e7a6?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 80px 0;
        }
        .stat-item {
            text-align: center;
            padding: 2rem;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent-color);
            margin-bottom: 0.5rem;
        }
        .news-card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }
        .news-date {
            position: absolute;
            top: 15px;
            left: 15px;
            background: var(--secondary-color);
            color: white;
            padding: 5px 15px;
            border-radius: 4px;
            font-size: 0.9rem;
        }
        .team-member {
            text-align: center;
            margin-bottom: 2rem;
        }
        .team-img {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 1.5rem;
            border: 5px solid white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .footer {
            background-color: #1f2937;
            color: white;
            padding: 60px 0 20px;
        }
        .footer h5 {
            color: var(--accent-color);
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        .footer-links a {
            color: #d1d5db;
            text-decoration: none;
            display: block;
            margin-bottom: 0.8rem;
            transition: all 0.3s ease;
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        .contact-info i {
            color: var(--accent-color);
            margin-right: 10px;
            width: 20px;
        }
        .copyright {
            border-top: 1px solid #374151;
            padding-top: 20px;
            margin-top: 40px;
            text-align: center;
            color: #9ca3af;
            font-size: 0.9rem;
        }
        .friendlink {
            background-color: var(--bg-light);
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 12px 25px;
            margin: 0 15px 15px 0;
            border-radius: 8px;
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            border: 1px solid #e5e7eb;
            transition: all 0.3s ease;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(30, 58, 138, 0.2);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 80px 0;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
            .flink {
                margin: 0 10px 10px 0;
                padding: 10px 20px;
            }
        }
        .fade-in {
            animation: fadeIn 1s ease-out;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--secondary-color);
            transform: translateY(-5px);
        }
        .contact-form .form-control {
            padding: 12px 15px;
            border: 1px solid #d1d5db;
            border-radius: 8px;
            margin-bottom: 1.5rem;
        }
        .contact-form .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.2rem rgba(30, 58, 138, 0.25);
        }
        .partner-logo {
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 15px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }
        .partner-logo:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
        }
        .partner-logo img {
            max-width: 100%;
            max-height: 100%;
            filter: grayscale(100%);
            transition: all 0.3s ease;
        }
        .partner-logo:hover img {
            filter: grayscale(0%);
        }