/* Responsive CSS */
@media (max-width: 1200px) {
    :root {
        --container-width: 960px;
        --section-spacing: 80px;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    :root {
        --container-width: 720px;
        --header-height: 70px;
    }
    
    .slide-content h1 {
        font-size: 36px;
    }
    
    .slide-content p {
        font-size: 16px;
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        flex-direction: column;
    }
    
    .contact-info, .contact-qrcode {
        width: 100%;
    }
    
    .contact-qrcode {
        margin-top: 50px;
        justify-content: center;
    }
    
    .qrcode-item {
        margin: 0 20px;
    }
    
    .footer-top {
        flex-direction: column;
    }
    
    .footer-logo {
        width: 100%;
        margin-bottom: 30px;
    }
    
    .footer-nav {
        width: 100%;
    }
}

@media (max-width: 768px) {
    :root {
        --container-width: 540px;
        --section-spacing: 60px;
    }
    
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-active .main-nav {
        display: block;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: white;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        padding: 20px 0;
    }
    
    .mobile-menu-active .main-nav ul {
        flex-direction: column;
    }
    
    .mobile-menu-active .main-nav li {
        margin: 0;
    }
    
    .mobile-menu-active .main-nav a {
        display: block;
        padding: 15px 20px;
    }
    
    .mobile-menu-active .main-nav a:after {
        display: none;
    }
    
    .hero-slider {
        height: 500px;
    }
    
    .slide {
        flex-direction: column;
        padding: 0;
    }
    
    .slide-content, .slide-image {
        width: 100%;
    }
    
    .slide-content {
        padding: 30px;
        order: 2;
    }
    
    .slide-image {
        height: 250px;
        order: 1;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .footer-nav {
        flex-wrap: wrap;
    }
    
    .footer-nav-group {
        width: 50%;
        margin-bottom: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
    }
    
    .copyright {
        margin-bottom: 20px;
    }
}

@media (max-width: 576px) {
    :root {
        --container-width: 100%;
        --section-spacing: 50px;
    }
    
    .hero-slider {
        height: 450px;
    }
    
    .slide-content h1 {
        font-size: 28px;
    }
    
    .slide-image {
        height: 200px;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
    
    .footer-nav-group {
        width: 100%;
    }
}