:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #f59e0b;
            --dark-color: #0f172a;
            --light-color: #f8fafc;
            --gray-color: #64748b;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 1rem;
        }
        .navbar {
            background-color: rgba(15, 23, 42, 0.95);
            backdrop-filter: blur(10px);
            padding: 1rem 0;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: white;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-weight: 600;
            margin: 0 0.5rem;
            padding: 0.5rem 1rem !important;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .nav-link:hover, .nav-link.active {
            color: white !important;
            background-color: rgba(220, 38, 38, 0.2);
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(15, 23, 42, 0.9), rgba(30, 58, 138, 0.8)), url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 8rem 0 6rem;
            position: relative;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2.5rem;
            opacity: 0.9;
            max-width: 800px;
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            border-radius: 2px;
        }
        .service-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            height: 100%;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: all 0.4s ease;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(220, 38, 38, 0.1);
            border-color: rgba(220, 38, 38, 0.2);
        }
        .service-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 2rem;
        }
        .stats-section {
            background: linear-gradient(135deg, var(--primary-color), #1e40af);
            color: white;
            padding: 5rem 0;
        }
        .stat-item {
            text-align: center;
            padding: 1.5rem;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
            color: var(--accent-color);
        }
        .stat-label {
            font-size: 1.1rem;
            opacity: 0.9;
        }
        .team-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            height: 100%;
        }
        .team-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }
        .team-img {
            height: 300px;
            width: 100%;
            object-fit: cover;
        }
        .team-info {
            padding: 1.5rem;
        }
        .team-name {
            font-size: 1.3rem;
            margin-bottom: 0.3rem;
        }
        .team-role {
            color: var(--secondary-color);
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .article-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
            transition: all 0.3s ease;
            height: 100%;
        }
        .article-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }
        .article-img {
            height: 220px;
            width: 100%;
            object-fit: cover;
        }
        .article-content {
            padding: 1.5rem;
        }
        .article-meta {
            color: var(--gray-color);
            font-size: 0.9rem;
            margin-bottom: 0.8rem;
        }
        .article-title {
            font-size: 1.25rem;
            margin-bottom: 1rem;
            line-height: 1.4;
        }
        .btn-primary-custom {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border: none;
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(220, 38, 38, 0.2);
            color: white;
        }
        .contact-section {
            background-color: var(--light-color);
        }
        .contact-info {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            height: 100%;
        }
        .contact-item {
            display: flex;
            align-items: center;
            margin-bottom: 1.5rem;
        }
        .contact-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(30, 58, 138, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            color: var(--primary-color);
            font-size: 1.2rem;
        }
        footer {
            background-color: var(--dark-color);
            color: rgba(255, 255, 255, 0.8);
            padding: 4rem 0 2rem;
        }
        .footer-links h5 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .flink {
            display: inline-block;
            background: white;
            border-radius: 8px;
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 600;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        .flink:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            color: var(--primary-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--secondary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            text-decoration: none;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(220, 38, 38, 0.3);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-5px);
        }
        .modal-content {
            border-radius: 12px;
            border: none;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
        }
        .modal-header {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            border-radius: 12px 12px 0 0;
            padding: 1.5rem;
        }
        .form-control {
            padding: 0.8rem 1rem;
            border-radius: 8px;
            border: 1px solid #e2e8f0;
            transition: all 0.3s ease;
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
        }