:root {
            --primary-color: #1a365d;
            --secondary-color: #2c5282;
            --accent-color: #38b2ac;
            --light-color: #f7fafc;
            --dark-color: #2d3748;
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary-color) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            padding: 0.5rem 1rem;
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover {
            color: var(--accent-color) !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 120px 0 80px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjxkZWZzPjxwYXR0ZXJuIGlkPSJwYXR0ZXJuIiB4PSIwIiB5PSIwIiB3aWR0aD0iNDAiIGhlaWdodD0iNDAiIHBhdHRlcm5Vbml0cz0idXNlclNwYWNlT25Vc2UiIHBhdHRlcm5UcmFuc2Zvcm09InJvdGF0ZSg0NSkiPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIyMCIgaGVpZ2h0PSIyMCIgZmlsbD0icmdiYSgyNTUsMjU1LDI1NSwwLjA1KSIvPjwvcGF0dGVybj48L2RlZnM+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0idXJsKCNwYXR0ZXJuKSIvPjwvc3ZnPg==');
            opacity: 0.3;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            padding-bottom: 1rem;
            color: var(--primary-color);
            font-weight: 700;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 4px;
            background: var(--accent-color);
            border-radius: 2px;
        }
        .section-title.text-center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .card {
            border: none;
            border-radius: var(--border-radius);
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
            height: 100%;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .card-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--accent-color), #319795);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .service-card {
            padding: 2rem;
            text-align: center;
            border-top: 4px solid transparent;
        }
        .service-card:hover {
            border-top-color: var(--accent-color);
        }
        .stats-section {
            background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
            padding: 80px 0;
        }
        .stat-item {
            text-align: center;
            padding: 20px;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
            line-height: 1;
        }
        .process-step {
            position: relative;
            padding-left: 90px;
            margin-bottom: 3rem;
        }
        .step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 70px;
            height: 70px;
            background: var(--accent-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            font-weight: 700;
            box-shadow: 0 5px 15px rgba(56, 178, 172, 0.3);
        }
        .cta-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--accent-color), #319795);
            border: none;
            color: white;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(56, 178, 172, 0.3);
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(56, 178, 172, 0.4);
            color: white;
        }
        .footer {
            background: var(--dark-color);
            color: #cbd5e0;
            padding: 60px 0 20px;
        }
        .footer a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
        }
        .social-links a {
            display: inline-block;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            margin-right: 10px;
            transition: var(--transition);
        }
        .social-links a:hover {
            background: var(--accent-color);
            transform: translateY(-3px);
        }
        .copyright {
            border-top: 1px solid #4a5568;
            padding-top: 20px;
            margin-top: 40px;
            font-size: 0.9rem;
        }
        .friendlink {
            background: #f8fafc;
            padding: 40px 0;
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background: white;
            border-radius: 30px;
            color: var(--dark-color);
            text-decoration: none;
            border: 1px solid #e2e8f0;
            transition: var(--transition);
            font-weight: 500;
        }
        .flink:hover {
            border-color: var(--accent-color);
            color: var(--accent-color);
            transform: translateY(-2px);
            box-shadow: 0 5px 10px rgba(0,0,0,0.05);
        }
        .breadcrumb {
            background: #f1f5f9;
            padding: 15px 0;
            border-radius: 0;
        }
        .article-content {
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .article-content h3 {
            color: var(--primary-color);
            margin-top: 2.5rem;
            margin-bottom: 1.2rem;
            font-weight: 700;
        }
        .img-hover-zoom {
            overflow: hidden;
            border-radius: var(--border-radius);
        }
        .img-hover-zoom img {
            transition: var(--transition);
            width: 100%;
            height: auto;
        }
        .img-hover-zoom:hover img {
            transform: scale(1.05);
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1.5rem;
        }
        .contact-info-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--accent-color), #319795);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.3rem;
            margin-right: 1rem;
            flex-shrink: 0;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--accent-color);
            color: white;
            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 5px 15px rgba(0,0,0,0.1);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--secondary-color);
            transform: translateY(-5px);
        }