/* 响应式设计 */
        @media (max-width: 768px) {
            .navbar {
                flex-direction: column;
            }
            
            .nav-links {
                margin-top: 15px;
                flex-wrap: wrap;
                justify-content: center;
            }
            
            .nav-links li {
                margin: 5px 15px;
            }
            
            .breadcrumb {
                padding: 150px 0 20px;
            }
        }
        
        .layout-container {
            display: grid;
            grid-template-columns: 250px 1fr;
            gap: 30px;
            margin-top: 30px;
        }
        
        @media (max-width: 992px) {
            .layout-container {
                grid-template-columns: 1fr;
            }
        }
    .product-img1 {            height: 200px;
            background-color: #f5f5f5;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
}