:root {
            --primary-color: #c00;
            --secondary-color: #333;
            --light-color: #f8f9fa;
            --dark-color: #212529;
        }
        body {
            font-family: "Microsoft YaHei", sans-serif;
            color: var(--secondary-color);
            line-height: 1.6;
        }
        h1, h2, h3, h4 {
            font-weight: 700;
            color: var(--dark-color);
        }
        .navbar-brand {
            font-weight: bold;
            font-size: 1.8rem;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            transition: color 0.3s;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary-color);
        }
        .hero {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1549399542-7e3f8b79c341?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
            color: white;
            padding: 150px 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            color: white;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 60px;
            height: 3px;
            background: var(--primary-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .card {
            border: none;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .card-img-top {
            height: 200px;
            object-fit: cover;
        }
        .service-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 30px;
        }
        .friendlink {
            background-color: var(--light-color);
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            margin: 10px 15px;
            padding: 10px 20px;
            background: white;
            border-radius: 5px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            transition: all 0.3s;
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 500;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: scale(1.05);
        }
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 40px 0 20px;
        }
        footer a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: white;
        }
        .contact-info li {
            margin-bottom: 10px;
        }
        .contact-info i {
            width: 20px;
            margin-right: 10px;
            color: var(--primary-color);
        }
        .map-container {
            height: 300px;
            border-radius: 10px;
            overflow: hidden;
        }
        .news-article {
            margin-bottom: 40px;
            padding-bottom: 20px;
            border-bottom: 1px solid #eee;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .hero {
                padding: 100px 0;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }