:root {
            --primary-color: #1a56db;
            --secondary-color: #0e9f6e;
            --accent-color: #ff6b35;
            --dark-color: #1f2937;
            --light-color: #f9fafb;
            --text-color: #374151;
            --border-radius: 8px;
            --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 1rem;
        }
        .section-header {
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-header h2 {
            font-size: 2.5rem;
            position: relative;
            display: inline-block;
            padding-bottom: 1rem;
        }
        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }
        .section-header p {
            font-size: 1.1rem;
            color: #6b7280;
            max-width: 700px;
            margin: 1rem auto 0;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 500;
            color: var(--dark-color);
            margin: 0 0.5rem;
            padding: 0.5rem 1rem !important;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color);
            background-color: rgba(26, 86, 219, 0.08);
        }
        .hero-section {
            background: linear-gradient(135deg, #f0f7ff 0%, #e6f7ff 100%);
            padding: 8rem 0 6rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(26, 86, 219, 0.1) 0%, rgba(26, 86, 219, 0) 70%);
            border-radius: 50%;
        }
        .hero-content h1 {
            font-size: 3.2rem;
            line-height: 1.2;
            margin-bottom: 1.5rem;
        }
        .hero-content p {
            font-size: 1.2rem;
            color: #4b5563;
            margin-bottom: 2rem;
            max-width: 600px;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #1546b8;
            border-color: #1546b8;
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(26, 86, 219, 0.2);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .btn-secondary:hover {
            background-color: #0c7e58;
            border-color: #0c7e58;
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(14, 159, 110, 0.2);
        }
        .feature-card, .service-card, .case-card, .news-card {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 2rem;
            height: 100%;
            transition: var(--transition);
            border: 1px solid #e5e7eb;
        }
        .feature-card:hover, .service-card:hover, .case-card:hover, .news-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), #3b82f6);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .feature-card h3, .service-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        .service-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
        }
        .case-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin-bottom: 1.5rem;
        }
        .case-tag {
            display: inline-block;
            background-color: rgba(14, 159, 110, 0.1);
            color: var(--secondary-color);
            padding: 0.25rem 0.75rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }
        .news-date {
            color: var(--secondary-color);
            font-weight: 600;
            margin-bottom: 0.5rem;
            display: block;
        }
        .partner-logo {
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            border: 1px solid #e5e7eb;
        }
        .partner-logo:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .partner-logo img {
            max-width: 100%;
            max-height: 50px;
            filter: grayscale(100%);
            opacity: 0.7;
            transition: var(--transition);
        }
        .partner-logo:hover img {
            filter: grayscale(0);
            opacity: 1;
        }
        footer {
            background-color: var(--dark-color);
            color: #d1d5db;
            padding-top: 4rem;
            margin-top: 6rem;
        }
        .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: 0.75rem;
        }
        .footer-links a {
            color: #9ca3af;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .contact-info i {
            width: 20px;
            margin-right: 10px;
            color: var(--secondary-color);
        }
        .copyright {
            background-color: rgba(0, 0, 0, 0.2);
            padding: 1.5rem 0;
            margin-top: 4rem;
            text-align: center;
            color: #9ca3af;
            font-size: 0.9rem;
        }
        .friendlink {
            background-color: #f8fafc;
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 1rem 1.5rem;
            margin: 0.5rem;
            border-radius: var(--border-radius);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            color: var(--text-color);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid #e5e7eb;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(26, 86, 219, 0.2);
        }
        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2.5rem;
            }
            .section-header h2 {
                font-size: 2rem;
            }
            .navbar-collapse {
                background-color: white;
                padding: 1rem;
                border-radius: var(--border-radius);
                box-shadow: var(--box-shadow);
                margin-top: 1rem;
            }
        }
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        .stats-label {
            font-size: 1rem;
            color: #6b7280;
            margin-top: 0.5rem;
        }
        .stats-card {
            text-align: center;
            padding: 2rem;
        }
        .timeline {
            position: relative;
            padding-left: 30px;
            margin-top: 3rem;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
            border-radius: 3px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background-color: var(--primary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--primary-color);
        }
        .timeline-date {
            font-weight: 600;
            color: var(--secondary-color);
            margin-bottom: 0.5rem;
        }