/* 产品列表样式 */
        .product-listing {
            padding: 40px 0;
            background-color: white;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-title h2 {
            font-size: 2.2rem;
            color: var(--secondary);
            margin-bottom: 15px;
        }
        
        .section-title p {
            color: var(--gray);
            max-width: 600px;
            margin: 0 auto;
        }
        
        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }
        
        .product-card {
            background-color: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }
        
        .product-card:hover {
            transform: translateY(-5px);
        }
        
        .product-img {
            height: 200px;
            background-color: #f5f5f5;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .product-img img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
        }
        
        .product-info {
            padding: 20px;
        }
        
        .product-info h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: var(--secondary);
        }
        
        .product-info p {
            color: var(--gray);
            margin-bottom: 15px;
        }
        
        .more-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            display: inline-block;
        }
        
        .more-link:hover {
            text-decoration: underline;
        }