:root {
            --primary-color: #1a237e;
            --secondary-color: #0d47a1;
            --accent-color: #ff9800;
            --light-bg: #f8f9fa;
            --dark-text: #212529;
            --light-text: #ffffff;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar {
            background-color: var(--primary-color);
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--light-text) !important;
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.9) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            transition: color 0.3s ease;
        }
        .nav-link:hover {
            color: var(--accent-color) !important;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--light-text);
            padding: 6rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero-section h1 {
            color: var(--light-text);
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
        }
        .btn-primary {
            background-color: var(--accent-color);
            border: none;
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #e68900;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(255, 152, 0, 0.3);
        }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
            margin: 1rem auto;
            border-radius: 2px;
        }
        .service-card, .product-card, .team-card {
            background: var(--light-bg);
            border-radius: 12px;
            padding: 2rem;
            height: 100%;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid #e0e0e0;
        }
        .service-card:hover, .product-card:hover, .team-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .service-icon, .product-icon {
            font-size: 3rem;
            color: var(--accent-color);
            margin-bottom: 1.5rem;
        }
        .team-img {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 1.5rem;
            border: 5px solid var(--accent-color);
        }
        .news-article {
            border-left: 4px solid var(--accent-color);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
        }
        .contact-info {
            list-style: none;
            padding-left: 0;
        }
        .contact-info li {
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }
        .contact-info i {
            color: var(--accent-color);
            width: 30px;
        }
        .friend-links {
            background-color: var(--light-bg);
            padding: 3rem 0;
        }
        .flink {
            display: inline-block;
            background: var(--light-text);
            padding: 0.75rem 1.5rem;
            margin: 0.5rem;
            border-radius: 50px;
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            border: 2px solid var(--primary-color);
            transition: all 0.3s ease;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: var(--light-text);
            transform: scale(1.05);
        }
        footer {
            background-color: var(--primary-color);
            color: var(--light-text);
            padding: 3rem 0 1.5rem;
        }
        footer a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: var(--accent-color);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            margin-top: 2rem;
            text-align: center;
        }
        .img-fluid {
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section p {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }