:root {
            --primary-color: #1a237e;
            --secondary-color: #283593;
            --accent-color: #3949ab;
            --highlight-color: #5c6bc0;
            --text-dark: #212121;
            --text-light: #757575;
            --background-light: #f5f5f5;
            --white: #ffffff;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', Arial, sans-serif;
            color: var(--text-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }
        a {
            color: var(--accent-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--highlight-color);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem 2rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(26, 35, 126, 0.2);
        }
        .btn-outline-primary {
            color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .btn-outline-primary:hover {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary-color);
        }
        .navbar-nav .nav-link {
            color: var(--text-dark);
            font-weight: 500;
            margin: 0 0.5rem;
            position: relative;
        }
        .navbar-nav .nav-link:hover, 
        .navbar-nav .nav-link.active {
            color: var(--primary-color);
        }
        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: 0;
            left: 50%;
            background-color: var(--primary-color);
            transition: var(--transition);
            transform: translateX(-50%);
        }
        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            width: 80%;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 8rem 0 6rem;
            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,PHN2ZyB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiB2aWV3Qm94PSIwIDAgMTAwIDEwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICA8ZGVmcz4KICAgIDxwYXR0ZXJuIGlkPSJncmFwaCIgcGF0dGVyblVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgd2lkdGg9IjQwIiBoZWlnaHQ9IjQwIiBwYXR0ZXJuVHJhbnNmb3JtPSJyb3RhdGUoNDUpIj4KICAgICAgPHJlY3Qgd2lkdGg9IjEiIGhlaWdodD0iMSIgZmlsbD0icmdiYSgyNTUsIDI1NSwgMjU1LCAwLjA1KSIvPgogICAgPC9wYXR0ZXJuPgogIDwvZGVmcz4KICA8cmVjdCB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiBmaWxsPSJ1cmwoI2dyYXBoKSIvPgo8L3N2Zz4=');
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: white;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .hero-subtitle {
            font-size: 1.25rem;
            margin-bottom: 2.5rem;
            opacity: 0.9;
            max-width: 700px;
        }
        .hero-buttons .btn {
            margin-right: 1rem;
            margin-bottom: 1rem;
        }
        section {
            padding: 5rem 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-light);
            max-width: 800px;
            margin: 0 auto 3rem;
        }
        .card {
            border: none;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .card-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(26, 35, 126, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .service-card {
            padding: 2rem;
            text-align: center;
        }
        .product-showcase {
            background-color: var(--background-light);
        }
        .product-card {
            overflow: hidden;
        }
        .product-img {
            height: 200px;
            overflow: hidden;
        }
        .product-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .product-card:hover .product-img img {
            transform: scale(1.05);
        }
        .about-section {
            background: linear-gradient(to right, var(--white) 50%, var(--background-light) 50%);
        }
        @media (max-width: 992px) {
            .about-section {
                background: var(--white);
            }
        }
        .about-content {
            padding-right: 3rem;
        }
        @media (max-width: 992px) {
            .about-content {
                padding-right: 0;
                margin-bottom: 3rem;
            }
        }
        .about-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }
        .stat-item {
            text-align: center;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
            line-height: 1;
        }
        .stat-label {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-top: 0.5rem;
        }
        .team-section {
            background-color: var(--background-light);
        }
        .team-card {
            text-align: center;
        }
        .team-img {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            overflow: hidden;
            margin: 0 auto 1.5rem;
            border: 5px solid var(--white);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .team-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-card {
            display: flex;
            flex-direction: column;
        }
        .news-date {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }
        .partner-logo {
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1rem;
            border-radius: 8px;
            background-color: var(--white);
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        .partner-logo:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px 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;
        }
        .contact-form .form-control {
            padding: 0.75rem 1rem;
            border-radius: 5px;
            border: 1px solid #ddd;
            margin-bottom: 1.5rem;
        }
        .contact-form .form-control:focus {
            border-color: var(--accent-color);
            box-shadow: 0 0 0 0.25rem rgba(57, 73, 171, 0.25);
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1.5rem;
        }
        .contact-info-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(26, 35, 126, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            color: var(--primary-color);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .friendlink {
            background-color: var(--background-light);
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            margin: 0.5rem;
            background-color: var(--white);
            border-radius: 30px;
            color: var(--text-dark);
            border: 1px solid #e0e0e0;
            transition: var(--transition);
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        footer {
            background-color: #0d1331;
            color: rgba(255, 255, 255, 0.8);
            padding: 4rem 0 2rem;
        }
        .footer-title {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.75rem;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            width: 40px;
            height: 2px;
            background-color: var(--accent-color);
            bottom: 0;
            left: 0;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.75rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            margin-top: 3rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
        }
        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .social-link {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            transition: var(--transition);
        }
        .social-link:hover {
            background-color: var(--accent-color);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            section {
                padding: 3rem 0;
            }
            .hero-section {
                padding: 6rem 0 4rem;
            }
            .about-content {
                padding-right: 0;
            }
        }
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }