@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .banner-title {
        font-size: 36px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .brands-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .customers-grid,
    .qualifications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header .container {
        height: 60px;
    }

    .menu-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background-color: #ffffff;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav.active {
        max-height: 400px;
    }

    .nav-menu {
        flex-direction: column;
        padding: 16px 24px;
        gap: 16px;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    main {
        margin-top: 60px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 32px;
    }
    
    .banner {
        min-height: 400px;
        padding: 60px 24px;
    }
    
    .banner-title {
        font-size: 28px;
    }
    
    .banner-subtitle {
        font-size: 16px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .about-section,
    .products-section {
        padding: 48px 0;
    }
    
    .brands-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .brand-category {
        margin-bottom: 48px;
    }
    
    .brand-category-title {
        font-size: 20px;
    }
    
    .customers-grid,
    .qualifications-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .customers-section,
    .qualifications-section {
        padding: 48px 0;
    }
    
    .contact-section {
        padding: 48px 0;
    }
    
    .contact-info,
    .contact-form-wrapper {
        padding: 24px;
    }
}