/* =====================================================
   江官网 - 响应式样式
   ===================================================== */

/* 平板端 (< 992px) */
@media (max-width: 992px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .article-item {
        flex-direction: column;
    }
    .article-item img {
        width: 100%;
        height: 200px;
    }
    .page-layout {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
    }
    .product-gallery {
        flex-direction: column;
    }
    .product-gallery .main-img {
        width: 100%;
        height: 300px;
    }
    .product-gallery .thumbs {
        flex-direction: row;
        overflow-x: auto;
    }
    .swiper {
        height: 400px;
    }
    .banner-content h1 {
        font-size: 32px;
    }
    .banner-content p {
        font-size: 16px;
    }
    .factory-tabs {
        overflow-x: auto;
    }
    .factory-tab {
        white-space: nowrap;
        padding: 12px 20px;
    }
}

/* 手机端 (< 768px) */
@media (max-width: 768px) {
    h1 { font-size: 24px; }
    h2 { font-size: 22px; }
    h3 { font-size: 18px; }

    .header-inner {
        height: 60px;
    }
    .nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
background: var(--navy-dark);
        flex-direction: column;
        box-shadow: 0 4px 20px rgba(0,0,0,0.4);
        max-height: calc(100vh - 60px);
        overflow-y: auto;
    }
    .nav.show {
        display: flex;
    }
    .nav > li {
        width: 100%;
        margin: 0;
    }
    .nav > li > a {
        padding: 14px 20px;
        border-bottom: 1px solid var(--border);
    }
    .dropdown {
        position: static;
        box-shadow: none;
        display: none;
        background: var(--navy-dark);
    }
    .nav > li.open .dropdown {
        display: block;
    }
    .hamburger {
        display: flex;
    }

    .swiper {
        height: 300px;
    }
    .banner-content {
        left: 5%;
        right: 5%;
        max-width: none;
    }
    .banner-content h1 {
        font-size: 24px;
    }
    .banner-content p {
        font-size: 14px;
        margin-bottom: 15px;
    }
    .banner-content .btn-group {
        flex-direction: column;
        gap: 10px;
    }
    .banner-content .btn {
        width: 100%;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    .case-grid {
        grid-template-columns: 1fr;
    }
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .section-block {
        padding: 50px 0;
    }
    .section-title {
        margin-bottom: 30px;
    }

    .banner {
        margin-top: 60px;
    }
    .breadcrumb {
        margin-top: 60px;
    }
    .page-hero {
        margin-top: 60px;
        padding: 40px 0;
    }
    .page-hero h1 {
        font-size: 28px;
    }

    .detail-content {
        padding: 20px;
    }
    .conversion-bar .btn-group {
        flex-direction: column;
    }
    .conversion-bar .btn-group .btn {
        width: 100%;
    }

    .page-layout {
        padding: 20px 0;
    }

    .float-consult {
        right: 15px;
        bottom: 80px;
    }
    .float-btn {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    #back-to-top {
        right: 15px;
        bottom: 145px;
        width: 38px;
        height: 38px;
        font-size: 16px;
    }
}

/* 小屏手机 (< 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    .cert-grid {
        grid-template-columns: 1fr 1fr;
    }
    .product-card {
        padding: 20px 15px;
    }
    .swiper {
        height: 240px;
    }
    .banner-content h1 {
        font-size: 20px;
    }
    .article-item {
        padding: 15px;
    }
    .article-item img {
        height: 160px;
    }
    .product-gallery .main-img {
        height: 240px;
    }
    .faq-cat-btn {
        font-size: 13px;
        padding: 6px 14px;
    }
    .table-wrap table {
        font-size: 13px;
    }
    .table-wrap th,
    .table-wrap td {
        padding: 8px 10px;
    }
    .modal-box {
        padding: 20px;
    }
    .factory-tab {
        padding: 10px 14px;
        font-size: 14px;
    }
}