:root {
            --primary-color: #2c3e50;
            --secondary-color: #d4af37;
            --accent-color: #e74c3c;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            line-height: 1.6;
            color: #333;
        }
        .navbar {
            background-color: var(--primary-color) !important;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--secondary-color) !important;
        }
        .nav-link {
            color: #fff !important;
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
        }
        .hero {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1556228453-efd6c1ff04f6?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 120px 0;
        }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: bold;
            text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
            text-align: center;
            color: var(--primary-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: var(--secondary-color);
        }
        .card {
            border: none;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.2);
        }
        .card-img-top {
            height: 250px;
            object-fit: cover;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 30px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            transform: scale(1.05);
        }
        .friendlink {
            background-color: var(--light-color);
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            margin: 10px 20px;
            padding: 10px 20px;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
            color: var(--dark-color);
            text-decoration: none;
            transition: all 0.3s;
            font-weight: 500;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-5px);
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 40px 0 20px;
        }
        footer a {
            color: var(--secondary-color);
            text-decoration: none;
        }
        footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .contact-info i {
            color: var(--secondary-color);
            margin-right: 10px;
        }
        .map-container {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .news-item {
            border-bottom: 1px solid #eee;
            padding: 20px 0;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .product-category {
            margin-bottom: 50px;
        }
        .icon-feature {
            font-size: 3rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }