/* ========================================
   英文版专用样式 - woodcard.cn
   导航栏、产品卡片、页脚等组件样式
   ======================================== */

/* 导航栏 */
.navbar {
    position: sticky;
    top: 0;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 100;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.navbar-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    min-width: 170px;
}

.navbar-logo img {
    height: 48px;
    width: auto;
    display: block;
}

.navbar-logo:hover {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    position: relative;
}

.nav-menu a,
.nav-menu-link {
    color: var(--gray-600);
    font-weight: 500;
    font-size: 0.9375rem;
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active,
.nav-menu-link:hover,
.nav-menu-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--gray-700);
    transition: all var(--transition-fast);
}

/* 首页HERO */
.hero-home {
    min-height: 70vh;
    background: #f8fafc;
}

/* 产品卡片 */
.product-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.35s ease;
    border: 1px solid var(--gray-200);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.product-card-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-card-image {
    transform: scale(1.04);
}

.product-card-body {
    padding: var(--spacing-lg);
}

.product-card-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-900);
    letter-spacing: -0.01em;
}

.product-card-text {
    color: var(--gray-500);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* 服务卡片 */
.service-card {
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-accent));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, rgba(30,58,95,.08) 0%, rgba(30,58,95,.04) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: #fff;
}

.service-card h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.service-card p {
    color: var(--gray-500);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* 页脚 */
.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-brand h3 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    font-weight: 800;
}

.footer-brand p {
    color: var(--gray-400);
    font-size: 0.9375rem;
    line-height: 1.75;
}

.footer-brand .flex a {
    color: var(--gray-400);
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-brand .flex a:hover {
    color: var(--primary-accent);
}

.footer-links h4 {
    color: var(--white);
    font-size: 0.9375rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.footer-links ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-links ul li a,
.footer-links ul li {
    color: var(--gray-400);
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-links ul li a:hover {
    color: var(--white);
}

.footer-bottom {
    padding: var(--spacing-lg) 0 var(--spacing-2xl);
    text-align: center;
    font-size: 0.8125rem;
    color: var(--gray-500);
}

.footer-bottom p {
    margin-bottom: 0;
}

.footer-bottom a {
    color: var(--gray-400);
    transition: color 0.2s ease;
}

.footer-bottom a:hover {
    color: var(--primary-accent);
}

/* 产品详情页 */
.product-detail {
    padding: var(--spacing-2xl) 0;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.product-gallery {
    position: -webkit-sticky;
    position: sticky;
    top: 80px;
    z-index: 10;
}

.product-gallery-main {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.product-gallery-thumbs {
    display: flex;
    gap: var(--spacing-sm);
}

.product-info {
    min-height: auto;
}

.product-info h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.product-info .product-desc {
    color: var(--gray-600);
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.product-specs {
    margin-top: var(--spacing-xl);
}

.product-specs h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.spec-item {
    padding: var(--spacing-md);
    background-color: var(--gray-50);
    border-radius: var(--radius-md);
}

.spec-item .spec-label {
    font-size: 0.8125rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.spec-item .spec-value {
    font-weight: 600;
    color: var(--gray-900);
}

/* 联系页面 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-info-card {
    padding: var(--spacing-xl);
    background-color: var(--gray-50);
    border-radius: var(--radius-lg);
}

.contact-info-card h3 {
    margin-bottom: var(--spacing-md);
}

.contact-info-card li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--gray-600);
}

/* 关于页面 */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-text h2 {
    margin-bottom: var(--spacing-md);
}

.about-text p {
    color: var(--gray-600);
    line-height: 1.8;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: var(--spacing-xs);
}

/* 材料详情 */
.material-detail-card {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    align-items: center;
}

.material-detail-card img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.material-detail-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.material-detail-card p {
    color: var(--gray-600);
    line-height: 1.8;
}

.material-props {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.material-prop {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--gray-50);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.material-prop strong {
    color: var(--gray-800);
}

/* 服务页面 */
.service-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
    align-items: center;
}

.service-detail:nth-child(even) {
    direction: rtl;
}

.service-detail:nth-child(even) > * {
    direction: ltr;
}

.service-detail-text h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.service-detail-text p {
    color: var(--gray-600);
    line-height: 1.8;
}

.service-detail-text ul {
    margin-top: var(--spacing-md);
}

.service-detail-text li {
    padding: var(--spacing-xs) 0;
    color: var(--gray-600);
    position: relative;
    padding-left: var(--spacing-lg);
}

.service-detail-text li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* CTA区域 */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    color: rgba(255,255,255,0.8);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
}

.cta-section .btn-secondary {
    background-color: var(--white);
    color: var(--primary-color);
}

.cta-section .btn-secondary:hover {
    background-color: var(--gray-100);
}

/* 关于页面 */
.about-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

/* 公司介绍模块：图片在上，文字在下（上下结构） */
.about-stacked {
    grid-template-columns: 1fr;
}

.about-content h2 {
    margin-bottom: var(--spacing-md);
}

.about-content p {
    color: var(--gray-600);
    line-height: 1.8;
}

.about-image {
    width: 100%;
    border-radius: var(--radius-lg);
    object-fit: cover;
}

.about-reverse {
    direction: rtl;
}

.about-reverse > * {
    direction: ltr;
}

/* 联系页面 */
.contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
}

.contact-details h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.contact-details p {
    color: var(--gray-600);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-xs);
}

.contact-details a {
    color: var(--primary-color);
}

/* 响应式补充 */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .product-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .product-gallery {
        position: static;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar .container {
        flex-wrap: nowrap;
        height: auto;
        padding-top: var(--spacing-sm);
        padding-bottom: var(--spacing-sm);
        position: relative;
    }

    .navbar-logo {
        min-width: auto;
        flex-shrink: 1;
        order: 0;
    }

    .navbar-logo img {
        height: 38px;
        width: auto;
        max-width: 50%;
        object-fit: contain;
    }

    .navbar-right {
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
        order: 1;
        margin-left: auto;
        flex-shrink: 0;
    }

    .lang-switcher {
        order: 0;
        flex-shrink: 0;
    }

    .lang-switcher-dropdown {
        z-index: 2000 !important;
    }

    .lang-switcher-btn {
        font-size: 0.75rem;
        padding: 3px 6px;
        max-width: 110px;
    }
    
    .nav-menu {
        display: none;
        width: 0;
        flex-direction: column;
        gap: var(--spacing-sm);
        padding-top: var(--spacing-md);
        overflow: hidden;
    }
    
    .nav-menu.show {
        display: flex;
        width: 100%;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        padding: var(--spacing-md);
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        z-index: 99;
    }

    .navbar {
        position: relative;
    }
    
    .menu-toggle {
        display: flex !important;
        order: 2;
    }

    /* 手机端 Products 下拉菜单 */
    .nav-dropdown-menu {
        position: static !important;
        transform: none !important;
        opacity: 1 !important;
        visibility: visible !important;
        box-shadow: none !important;
        border-radius: 0 !important;
        padding: 0 0 0 16px !important;
        background: transparent !important;
        display: none !important;
        min-width: auto !important;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav-dropdown:hover .nav-dropdown-menu,
    .nav-dropdown.active .nav-dropdown-menu {
        display: block !important;
        max-height: 500px;
    }

    .nav-dropdown-menu::before,
    .nav-dropdown-menu::after {
        display: none !important;
    }

    .nav-dropdown-toggle .arrow {
        margin-left: auto;
    }

    .nav-dropdown-menu a {
        padding: 10px 16px;
        font-size: 0.86rem;
        border-radius: 6px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .product-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid,
    .about-grid,
    .about-section {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .material-detail-card {
        grid-template-columns: 1fr;
    }
    
    .service-detail {
        grid-template-columns: 1fr;
    }
    
    .service-detail:nth-child(even) {
        direction: ltr;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
}


/* ========== Social Media Icons ========== */
.social-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #4b5563;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    padding: 4px 0;
}

.social-link i {
    font-size: 16px;
    width: 20px;
    text-align: center;
    transition: all 0.3s ease;
}

/* Platform-specific colors on hover */
.social-link:hover {
    color: #1f2937;
}

.social-link:hover i.fa-facebook-f { color: #1877F2; }
.social-link:hover i.fa-x-twitter { color: #000000; }
.social-link:hover i.fa-linkedin-in { color: #0A66C2; }
.social-link:hover i.fa-youtube { color: #FF0000; }

/* Hover lift effect */
.social-link:hover {
    transform: translateY(-1px);
}
/* Social Links - Equal Width Tech Feel */
.footer-social .social-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 0.75rem 1rem;
    border-radius: 50px;
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.8) 0%, rgba(37, 99, 235, 0.15) 100%);
    border: 1px solid rgba(37, 99, 235, 0.3);
    font-size: 0.9rem;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4), 0 0 30px rgba(37, 99, 235, 0.2);
    border-color: var(--accent-color);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(37, 99, 235, 0.25) 100%);
}


/* ========================================
   Product Specs Table - Business Style
   ======================================== */
.specs-table-wrapper {
    overflow-x: auto;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
    border: 1px solid #e8ecf1;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    font-size: 0.9375rem;
}

.specs-table tbody tr {
    transition: background-color 0.2s ease;
}

.specs-table tbody tr:nth-child(even) {
    background-color: #f8fafc;
}

.specs-table tbody tr:hover {
    background-color: #f0f4f8;
}

.specs-table td {
    padding: 16px 20px;
    border-bottom: 1px solid #eef2f7;
    line-height: 1.6;
    vertical-align: top;
}

.specs-table tbody tr:last-child td {
    border-bottom: none;
}

.specs-table .spec-th {
    width: 18%;
    min-width: 150px;
    color: #64748b;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    background-color: #fafbfc;
}

.specs-table .spec-td {
    color: #1e293b;
    font-weight: 400;
}

/* First column th gets left accent */
.specs-table tbody tr td:first-of-type {
    border-left: 3px solid transparent;
}

.specs-table tbody tr:hover td:first-of-type {
    border-left-color: #c8a96e;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .specs-table-wrapper {
        border-radius: 8px;
    }
    
    .specs-table {
        font-size: 0.875rem;
    }
    
    .specs-table td {
        padding: 12px 14px;
    }
    
    .specs-table .spec-th {
        width: 35%;
        min-width: 120px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .specs-table td {
        padding: 10px 12px;
    }
    
    .specs-table .spec-th {
        width: 40%;
        font-size: 0.75rem;
    }
    
    .specs-table .spec-td {
        font-size: 0.8125rem;
    }
}


/* Apps Grid Responsive */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
@media (max-width: 768px) {
    .apps-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}
@media (max-width: 480px) {
    .apps-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 12px;
    }
}

/* 产品详情页 - 减小与面包屑之间的空隙 */
.product-detail.section {
    padding-top: var(--spacing-lg);
}

/* Applications tab - responsive grid */
#tab-apps .grid-cols-responsive {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
@media (max-width: 768px) {
    #tab-apps .grid-cols-responsive {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 480px) {
    #tab-apps .grid-cols-responsive {
        grid-template-columns: 1fr;
    }
}

/* Feature Cards Hover */
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(30, 58, 95, 0.12);
    border-color: #c8a96e;
}

/* Feature Cards Responsive */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
}

/* FAQ Item Hover */
.faq-item button:hover {
    background: #f1f5f9;
}

.process-step:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(30,58,95,0.1);border-color:#c8a96e;}
@media(max-width:768px){.process-steps{grid-template-columns:1fr!important;}}

.app-card:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(30,58,95,0.1);border-color:#c8a96e;}
@media(max-width:768px){.apps-grid{grid-template-columns:1fr!important;}}

.core-item:hover,.specs-grid>div:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(30,58,95,0.1);}
.core-grid{grid-template-columns:repeat(2,1fr);gap:16px;}
@media(max-width:768px){.core-grid,.specs-grid{grid-template-columns:1fr!important;}}


/* ========================================
   Sitemap Page
   ======================================== */
.sitemap-section {
    padding: 80px 0;
    background: #f8fafc;
}

.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.sitemap-group {
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
    border: 1px solid #e8ecf1;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.sitemap-group:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(30, 58, 95, 0.12);
}

.sitemap-group h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1e3a5f;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid #c8a96e;
}

.sitemap-group ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sitemap-group ul li {
    padding: 8px 0;
    border-bottom: 1px solid #f1f5f9;
}

.sitemap-group ul li:last-child {
    border-bottom: none;
}

.sitemap-group ul li a,
.sitemap-group ul li {
    color: #4b5563;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.sitemap-group ul li a:hover {
    color: #c8a96e;
    padding-left: 6px;
}

@media (max-width: 768px) {
    .sitemap-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .sitemap-section {
        padding: 48px 0;
    }
    
    .sitemap-group {
        padding: 24px;
    }
}

/* Why Choose Section - Responsive Grid */
.why-choose-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

@media (max-width: 1024px) {
    .why-choose-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .why-choose-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .why-choose-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    /* 导航栏极致小屏 */
    .navbar-logo img {
        height: 34px;
        max-width: 45%;
        width: auto;
    }

    .lang-switcher {
        font-size: 0.7rem;
    }

    .lang-switcher a,
    .lang-switcher strong {
        padding: 2px 3px;
    }

    /* 按钮适配 */
    .btn {
        padding: 10px 20px;
        font-size: 0.875rem;
    }

    /* 产品卡片 */
    .product-card-body {
        padding: 0;
    }

    .product-card-title {
        font-size: 1rem;
    }

    /* 服务卡片 */
    .service-card {
        padding: var(--spacing-md);
    }

    .service-icon {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }

    /* 材料卡片 */
    .material-card {
        padding: var(--spacing-sm);
    }

    .material-card h3 {
        font-size: 0.9rem;
    }

    /* 页脚 */
    .footer-brand p {
        font-size: 0.8125rem;
    }

    .footer-links ul li a,
    .footer-links ul li {
        font-size: 0.8125rem;
    }
}