:root {
            --primary-color: #1a365d;
            --secondary-color: #2d6cdf;
            --accent-color: #10b981;
            --light-bg: #f8fafc;
            --dark-text: #1e293b;
            --light-text: #64748b;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--secondary-color), var(--accent-color));
            border-radius: 2px;
        }
        .section-title.center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
            padding: 15px 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 600;
            color: var(--dark-text) !important;
            margin: 0 8px;
            position: relative;
            padding: 8px 0 !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--secondary-color);
            transition: var(--transition);
            border-radius: 2px;
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, #2a4365 100%);
            color: white;
            padding: 120px 0 100px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiB2aWV3Qm94PSIwIDAgMTIwMCA2MDAiIHByZXNlcnZlQXNwZWN0UmF0aW89Im5vbmUiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGc+PHBhdGggZmlsbD0icmdiYSgyNTUsMjU1LDI1NSwwLjAzKSIgZD0iTTAgMzAwaDYwMHYzMDBIMHoiLz48cGF0aCBmaWxsPSJyZ2JhKDI1NSwyNTUsMjU1LDAuMDUpIiBkPSJNNjAwIDBoNjAwdjMwMEg2MDB6Ii8+PHBhdGggZmlsbD0icmdiYSgyNTUsMjU1LDI1NSwwLjAyKSIgZD0iTTYwMCAzMDBoNjAwdjMwMEg2MDB6Ii8+PC9nPjwvc3ZnPg==');
            opacity: 0.3;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 25px;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .btn-primary {
            background: linear-gradient(to right, var(--secondary-color), #4f83e6);
            border: none;
            padding: 12px 32px;
            border-radius: 8px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(45, 108, 223, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(45, 108, 223, 0.4);
        }
        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 10px 30px;
            border-radius: 8px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.5);
        }
        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            height: 100%;
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        .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), #4f83e6);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
        }
        .feature-icon i {
            font-size: 28px;
            color: white;
        }
        .service-item {
            background: white;
            border-radius: 12px;
            padding: 40px 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            height: 100%;
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        .service-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            border-color: var(--secondary-color);
        }
        .service-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--accent-color), #34d399);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
        }
        .service-icon i {
            font-size: 24px;
            color: white;
        }
        .stat-card {
            text-align: center;
            padding: 30px 20px;
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--secondary-color);
            line-height: 1;
            margin-bottom: 10px;
        }
        .team-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            height: 100%;
        }
        .team-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }
        .team-img {
            height: 280px;
            object-fit: cover;
            width: 100%;
        }
        .team-info {
            padding: 25px;
        }
        .news-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }
        .news-img {
            height: 220px;
            object-fit: cover;
            width: 100%;
        }
        .news-content {
            padding: 25px;
        }
        .news-date {
            color: var(--light-text);
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        .contact-info-card {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            height: 100%;
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--secondary-color), #4f83e6);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .contact-icon i {
            font-size: 24px;
            color: white;
        }
        .footer {
            background-color: var(--primary-color);
            color: #cbd5e1;
            padding: 70px 0 20px;
        }
        .footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .footer-title {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 25px;
            font-weight: 600;
        }
        .friendlink {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 30px;
            border-radius: 12px;
            margin-top: 40px;
        }
        .flink {
            display: inline-block;
            background: rgba(255, 255, 255, 0.1);
            color: #cbd5e1;
            padding: 8px 20px;
            border-radius: 6px;
            margin: 5px 8px;
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .flink:hover {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            transform: translateY(-2px);
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.9rem;
        }
        .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: 20px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 1000;
            text-decoration: none;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-5px);
        }
        .form-control {
            padding: 12px 15px;
            border-radius: 8px;
            border: 1px solid #e2e8f0;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 0.25rem rgba(45, 108, 223, 0.25);
        }
        .form-label {
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--dark-text);
        }
        @media (max-width: 768px) {
            .navbar-collapse {
                background-color: white;
                padding: 20px;
                border-radius: 12px;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
                margin-top: 15px;
            }
            .hero-section {
                padding: 100px 0 80px;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }