@media (max-width: 1199px) {
    .container {
        max-width: 100%;
    }
    
    .banner-slide {
        height: 500px;
    }
    
    .banner-content h2 {
        font-size: 42px;
    }
    
    .banner-content p {
        font-size: 20px;
    }
    
    .scene-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 991px) {
    .header-top {
        display: none;
    }
    
    .header-main {
        padding: 10px 0;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .banner-slide {
        height: 450px;
    }
    
    .banner-content h2 {
        font-size: 36px;
    }
    
    .banner-content p {
        font-size: 18px;
    }
    
    .scene-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .solution-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .statistics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .header {
        position: relative;
    }
    
    .header-main {
        padding: 15px 0;
    }
    
    .logo img {
        height: 40px;
    }
    
    .banner-section {
        margin-top: 0;
    }
    
    .banner-slide {
        height: 400px;
    }
    
    .banner-content {
        padding: 0 20px;
    }
    
    .banner-content h2 {
        font-size: 28px;
        margin-bottom: 15px;
    }
    
    .banner-content p {
        font-size: 16px;
        margin-bottom: 20px;
    }
    
    .banner-btn {
        padding: 10px 30px;
        font-size: 16px;
    }
    
    .scene-section {
        padding: 40px 0;
    }
    
    .scene-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .scene-card {
        padding: 30px 20px;
    }
    
    .scene-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .scene-card h3 {
        font-size: 18px;
    }
    
    .product-section {
        padding: 40px 0;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .product-card {
        flex-direction: column;
    }
    
    .product-image {
        height: 200px;
    }
    
    .solution-section {
        padding: 40px 0;
    }
    
    .solution-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .case-section {
        padding: 40px 0;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .news-section {
        padding: 40px 0;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .news-image {
        height: 200px;
    }
    
    .statistics-section {
        padding: 40px 0;
    }
    
    .statistics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .history-section {
        padding: 40px 0;
    }
    
    .history-timeline::before {
        left: 20px;
    }
    
    .history-item {
        padding-left: 60px;
    }
    
    .history-item::before {
        left: 12px;
        width: 16px;
        height: 16px;
    }
    
    .history-year {
        font-size: 24px;
    }
    
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .footer-logo {
        text-align: center;
    }
    
    .footer-contact p {
        justify-content: center;
    }
    
    .footer-qrcode {
        text-align: center;
    }
    
    .section-title {
        margin-bottom: 30px;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
    
    .section-title p {
        font-size: 14px;
    }
    
    .btn {
        padding: 8px 20px;
        font-size: 14px;
    }
    
    .mobile-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: #fff;
        z-index: 9999;
        transition: left 0.3s ease;
        overflow-y: auto;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    }
    
    .mobile-menu.active {
        left: 0;
    }
    
    .mobile-menu-header {
        padding: 20px;
        border-bottom: 1px solid #eee;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .mobile-menu-close {
        font-size: 24px;
        cursor: pointer;
        color: #333;
    }
    
    .mobile-nav {
        padding: 20px 0;
    }
    
    .mobile-nav li {
        border-bottom: 1px solid #f5f5f5;
    }
    
    .mobile-nav li a {
        display: block;
        padding: 15px 20px;
        color: #333;
        font-size: 15px;
    }
    
    .mobile-nav li a:hover {
        background: #f8f9fa;
        color: var(--primary-color, #005BAC);
    }
    
    .mobile-nav .dropdown-menu {
        position: static;
        float: none;
        width: 100%;
        box-shadow: none;
        border: none;
        padding: 0;
        background: #f8f9fa;
    }
    
    .mobile-nav .dropdown-menu li a {
        padding-left: 40px;
    }
    
    .mobile-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 9998;
        display: none;
    }
    
    .mobile-overlay.active {
        display: block;
    }
}

@media (max-width: 575px) {
    .container {
        padding: 0 10px;
    }
    
    .banner-slide {
        height: 350px;
    }
    
    .banner-content h2 {
        font-size: 24px;
    }
    
    .banner-content p {
        font-size: 14px;
    }
    
    .banner-btn {
        padding: 8px 25px;
        font-size: 14px;
    }
    
    .statistics-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .back-to-top {
        width: 40px;
        height: 40px;
        font-size: 18px;
        bottom: 20px;
        right: 20px;
    }
}

@media print {
    .header,
    .footer,
    .back-to-top,
    .mobile-menu-toggle,
    .mobile-menu,
    .mobile-overlay {
        display: none !important;
    }
    
    .banner-section {
        margin-top: 0;
    }
    
    body {
        font-size: 12pt;
        color: #000;
        background: #fff;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
    
    .container {
        width: 100%;
        max-width: 100%;
        padding: 0;
        margin: 0;
    }
}