:root {
            --primary-color: #0a3d62;
            --secondary-color: #1e90ff;
            --accent-color: #ff9f1a;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --success-color: #28a745;
            --border-radius: 8px;
            --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            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(--accent-color);
            border-radius: 2px;
        }
        .navbar {
            background-color: rgba(10, 61, 98, 0.95);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: white !important;
        }
        .navbar-brand span {
            color: var(--accent-color);
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: white !important;
        }
        .nav-link:hover:after, .nav-link.active:after {
            width: 100%;
        }
        .nav-link:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .hero-section {
            background: linear-gradient(rgba(10, 61, 98, 0.85), rgba(10, 61, 98, 0.9)), url('https://images.unsplash.com/photo-1553877522-43269d4ea984?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 150px 0 100px;
            text-align: center;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        .btn-primary {
            background-color: var(--accent-color);
            border-color: var(--accent-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #e68a00;
            border-color: #e68a00;
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255, 159, 26, 0.3);
        }
        .card {
            border: none;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
        }
        .card-icon {
            font-size: 3rem;
            color: var(--secondary-color);
            margin-bottom: 1.5rem;
        }
        .service-card .card-body {
            padding: 2.5rem;
        }
        .statistic-item {
            text-align: center;
            padding: 2rem;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
        }
        .statistic-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        .process-step {
            position: relative;
            padding: 2rem;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            text-align: center;
            margin-bottom: 2rem;
        }
        .step-number {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 50px;
            background-color: var(--accent-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.5rem;
        }
        .news-card {
            border-left: 4px solid var(--secondary-color);
            transition: var(--transition);
        }
        .news-card:hover {
            border-left-color: var(--accent-color);
        }
        .partner-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: var(--transition);
            padding: 1.5rem;
            background-color: white;
            border-radius: var(--border-radius);
            display: flex;
            align-items: center;
            justify-content: center;
            height: 120px;
        }
        .partner-logo:hover {
            filter: grayscale(0);
            opacity: 1;
            box-shadow: var(--box-shadow);
        }
        .partner-logo img {
            max-width: 100%;
            max-height: 60px;
        }
        .contact-info-box {
            padding: 2rem;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            margin-bottom: 2rem;
            text-align: center;
        }
        .contact-icon {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-bottom: 1rem;
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            margin: 0.5rem;
            background-color: white;
            border-radius: 30px;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
        }
        .flink:hover {
            background-color: var(--secondary-color);
            color: white;
            transform: translateY(-3px);
            text-decoration: none;
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 4rem 0;
        }
        footer {
            background-color: var(--primary-color);
            color: rgba(255, 255, 255, 0.85);
            padding: 4rem 0 2rem;
        }
        footer a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: var(--transition);
        }
        footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.9rem;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--accent-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            text-decoration: none;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--primary-color);
            color: white;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 2rem;
            }
            .navbar-brand {
                font-size: 1.5rem;
            }
        }
        .form-control:focus {
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 0.25rem rgba(30, 144, 255, 0.25);
        }