/* 响应式布局 */
@media (max-width: 768px) {
    .main-navigation ul {
        display: none;
        flex-direction: column;
        background: white;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        padding: 20px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    .main-navigation ul.show {
        display: flex;
    }
    .menu-toggle {
        display: block;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .service-grid {
        grid-template-columns: 1fr;
    }
    .footer-info {
        flex-direction: column;
        text-align: center;
    }
    .contact-info,
    .contact-form {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        width: 95%;
    }
    .hero {
        padding: 60px 0;
    }
}