:root {
            --primary: #0a3d62;
            --secondary: #1e5c8a;
            --accent: #f9ca24;
            --light: #f8f9fa;
            --dark: #2c3e50;
            --success: #27ae60;
            --danger: #c0392b;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Noto Sans SC', '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);
        }
        .navbar {
            background: rgba(10, 61, 98, 0.95) !important;
            backdrop-filter: blur(10px);
            padding: 1rem 0;
            transition: var(--transition);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: white !important;
        }
        .navbar-brand span {
            color: var(--accent);
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent) !important;
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .navbar-toggler-icon {
            filter: invert(1);
        }
        .hero-section {
            background: linear-gradient(rgba(10, 61, 98, 0.85), rgba(10, 61, 98, 0.9)), url('https://images.unsplash.com/photo-1589829545856-d10d557cf95f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 180px 0 120px;
            position: relative;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 2rem;
        }
        .btn-primary {
            background-color: var(--accent);
            border-color: var(--accent);
            color: var(--dark);
            font-weight: 600;
            padding: 0.75rem 2rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #f1b90c;
            border-color: #f1b90c;
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(249, 202, 36, 0.3);
        }
        .section-title {
            position: relative;
            margin-bottom: 3.5rem;
            text-align: center;
        }
        .section-title h2 {
            display: inline-block;
            padding-bottom: 15px;
        }
        .section-title h2:after {
            content: '';
            position: absolute;
            width: 70px;
            height: 4px;
            background: var(--accent);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .service-card {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            border: 1px solid #eee;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .service-icon {
            width: 80px;
            height: 80px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            margin: 2rem auto 1.5rem;
        }
        .service-card h4 {
            margin-bottom: 1rem;
            color: var(--primary);
        }
        .about-section {
            background-color: #f8fafc;
            padding: 100px 0;
        }
        .about-img {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .stats-box {
            background: var(--primary);
            color: white;
            padding: 2rem;
            border-radius: 8px;
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stats-box .number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--accent);
            display: block;
            line-height: 1;
        }
        .stats-box p {
            margin-bottom: 0;
            font-size: 1.1rem;
        }
        .partners-section {
            padding: 80px 0;
            background: white;
        }
        .partner-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: var(--transition);
            padding: 20px;
            max-height: 80px;
        }
        .partner-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .news-card {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            background: white;
        }
        .news-card:hover {
            transform: translateY(-5px);
        }
        .news-img {
            height: 200px;
            object-fit: cover;
            width: 100%;
        }
        .news-date {
            background: var(--accent);
            color: var(--dark);
            padding: 5px 15px;
            border-radius: 4px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 1rem;
        }
        .contact-section {
            background: linear-gradient(rgba(10, 61, 98, 0.9), rgba(10, 61, 98, 0.95)), url('https://images.unsplash.com/photo-1513475382585-d06e58bcb0e0?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
        }
        .contact-section h2, .contact-section h3 {
            color: white;
        }
        .contact-info-box {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: 8px;
            padding: 2rem;
            margin-bottom: 1.5rem;
            transition: var(--transition);
        }
        .contact-info-box:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background: var(--accent);
            color: var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-right: 1rem;
        }
        .form-control, .form-select {
            padding: 0.75rem 1rem;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.1);
            color: white;
        }
        .form-control:focus, .form-select:focus {
            background: rgba(255, 255, 255, 0.15);
            border-color: var(--accent);
            box-shadow: 0 0 0 0.25rem rgba(249, 202, 36, 0.25);
            color: white;
        }
        .form-control::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }
        footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 80px 0 30px;
        }
        footer h5 {
            color: white;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 10px;
        }
        footer h5:after {
            content: '';
            position: absolute;
            width: 40px;
            height: 3px;
            background: var(--accent);
            bottom: 0;
            left: 0;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            display: block;
            margin-bottom: 0.75rem;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            border-radius: 50%;
            margin-right: 10px;
            transition: var(--transition);
        }
        .social-links a:hover {
            background: var(--accent);
            color: var(--dark);
            transform: translateY(-3px);
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            margin-top: 50px;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .friend-links {
            background: #f8f9fa;
            padding: 40px 0;
            border-top: 1px solid #eee;
            border-bottom: 1px solid #eee;
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background: white;
            border-radius: 4px;
            color: var(--primary);
            text-decoration: none;
            border: 1px solid #e0e0e0;
            transition: var(--transition);
        }
        .flink:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--accent);
            color: var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: #f1b90c;
            transform: translateY(-3px);
        }
        @media (max-width: 992px) {
            .hero-section h1 {
                font-size: 2.8rem;
            }
            .hero-section {
                padding: 150px 0 100px;
            }
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.3rem;
            }
            .section-title h2 {
                font-size: 1.8rem;
            }
            .stats-box .number {
                font-size: 2.5rem;
            }
        }
        @media (max-width: 576px) {
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-section p {
                font-size: 1rem;
            }
            .navbar-brand {
                font-size: 1.5rem;
            }
        }
        .certification-badge {
            display: inline-block;
            background: var(--success);
            color: white;
            padding: 5px 15px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-right: 10px;
            margin-bottom: 10px;
        }
        .process-step {
            position: relative;
            padding-left: 70px;
            margin-bottom: 2.5rem;
        }
        .process-step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 50px;
            height: 50px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
        }
        .team-card {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
            padding-bottom: 1.5rem;
        }
        .team-card:hover {
            transform: translateY(-10px);
        }
        .team-img {
            width: 100%;
            height: 250px;
            object-fit: cover;
        }
        .team-card h5 {
            margin-top: 1.5rem;
            color: var(--primary);
        }
        .team-position {
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .map-container {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            height: 400px;
        }
        .map-container iframe {
            width: 100%;
            height: 100%;
            border: 0;
        }