/* 响应式设计 */

@media (max-width: 1024px) {
    .container {
        max-width: 960px;
    }
    
    nav ul {
        gap: 1.5rem;
    }
    
    .banner h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1.5rem;
        padding: 1rem 0;
    }
    
    nav ul {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        width: 100%;
    }
    
    nav li {
        width: 100%;
    }
    
    nav a {
        display: block;
        padding: 0.8rem;
    }
    
    .banner {
        padding: 3rem 0;
    }
    
    .banner h1 {
        font-size: 2rem;
    }
    
    .banner p {
        font-size: 1.1rem;
    }
    
    .content-card {
        padding: 2rem 1.5rem;
    }
    
    .content-card h2 {
        font-size: 1.6rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    footer .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .banner {
        padding: 2rem 0;
    }
    
    .banner h1 {
        font-size: 1.6rem;
    }
    
    .banner p {
        font-size: 1rem;
    }
    
    .content-card {
        padding: 1.5rem 1rem;
    }
    
    .content-card h2 {
        font-size: 1.4rem;
    }
    
    .content-card h3 {
        font-size: 1.2rem;
    }
    
    .error-page h1 {
        font-size: 5rem;
    }
    
    .error-page h2 {
        font-size: 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .btn {
        padding: 0.8rem 1.8rem;
        font-size: 0.9rem;
    }
}