/* 组件样式 - 经典蓝白配色 */
.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-gray);
    color: var(--dark-gray);
}

.icon-placeholder {
    font-size: 2.5rem;
}

/* 关于我们页面特定样式 */
.page-header {
    background-color: var(--light-blue);
    padding: var(--spacing-xxl) 0;
    margin-top: 80px;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 1.2rem;
    color: var(--dark-gray);
}

.about-stats {
    display: flex;
    justify-content: space-around;
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--medium-gray);
    border-bottom: 1px solid var(--medium-gray);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

/* 绿色点缀的统计数字 */
.stat-number.accent {
    color: var(--accent-green);
}

.stat-label {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary-blue);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-year {
    width: 100px;
    height: 100px;
    background-color: var(--primary-blue);
    color: var(--pure-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    z-index: 2;
    flex-shrink: 0;
}

.timeline-content {
    flex: 1;
    padding: 0 var(--spacing-lg);
    background-color: var(--pure-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin: 0 10px;
    position: relative;
    z-index: 2;
    border: 1px solid var(--medium-gray);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 20px;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: 20px;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

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

.culture-icon {
    width: 100px;
    height: 100px;
    background-color: var(--light-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2.5rem;
    color: var(--primary-blue);
}

/* 绿色点缀的文化图标 */
.culture-icon.accent {
    background-color: var(--light-green);
    color: var(--accent-green);
}

.culture-item h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.honor-item {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--pure-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--medium-gray);
}

.honor-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.honor-icon {
    width: 80px;
    height: 80px;
    background-color: var(--light-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
    color: var(--primary-blue);
}

.honor-item h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
}

.certifications {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

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

.cert-icon {
    width: 80px;
    height: 80px;
    background-color: var(--light-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
    color: var(--primary-blue);
}

.cert-item h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
}

/* 产品页面特定样式 */
.products-detail {
    margin-bottom: var(--spacing-xxl);
}

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

.product-gallery {
    position: sticky;
    top: 100px;
}

.main-image {
    height: 400px;
    background-color: var(--light-gray);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-gray);
}

.thumbnails {
    display: flex;
    gap: var(--spacing-sm);
}

.thumbnail {
    width: 80px;
    height: 80px;
    background-color: var(--light-gray);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 2px solid transparent;
}

.thumbnail.active {
    border-color: var(--primary-blue);
}

.product-info h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-blue);
}

.product-intro {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    color: var(--dark-gray);
}

.product-features {
    margin-bottom: var(--spacing-lg);
}

.product-features h4 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-blue);
}

.product-features ul {
    list-style: disc;
    margin-left: var(--spacing-lg);
}

.product-features li {
    margin-bottom: var(--spacing-sm);
    color: var(--dark-gray);
}

.product-specs {
    margin-bottom: var(--spacing-lg);
}

.product-specs h4 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-blue);
}

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

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm);
    background-color: var(--light-gray);
    border-radius: var(--radius-sm);
}

.spec-name {
    color: var(--dark-gray);
}

.spec-value {
    font-weight: 500;
    color: var(--primary-blue);
}

.product-actions {
    display: flex;
    gap: var(--spacing-md);
}

.accessories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.accessory-item {
    background-color: var(--pure-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--medium-gray);
}

.accessory-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.accessory-image {
    height: 200px;
    background-color: var(--light-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark-gray);
}

.accessory-content {
    padding: var(--spacing-lg);
}

.accessory-content h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
}

.accessory-content p {
    margin-bottom: var(--spacing-md);
    color: var(--dark-gray);
}

.accessory-specs {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.spec {
    font-size: 0.9rem;
    color: var(--dark-gray);
    padding: 4px 0;
    border-bottom: 1px solid var(--medium-gray);
}

/* 产品比较表格 */
.comparison-table {
    overflow-x: auto;
    margin-bottom: var(--spacing-xl);
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.comparison-table th,
.comparison-table td {
    padding: var(--spacing-md);
    text-align: center;
    border: 1px solid var(--medium-gray);
}

.comparison-table th {
    background-color: var(--light-blue);
    color: var(--primary-blue);
    font-weight: 600;
}

.comparison-table tr:nth-child(even) {
    background-color: var(--light-gray);
}

.feature-highlight {
    color: var(--primary-blue);
    font-weight: 600;
}

/* 绿色点缀的高亮 */
.feature-highlight.accent {
    color: var(--accent-green);
}

/* 锚点导航 */
.section-nav {
    position: sticky;
    top: 100px;
    background-color: var(--pure-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
    z-index: 10;
    border: 1px solid var(--medium-gray);
}

.section-nav-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--dark-gray);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all 0.3s;
}

.section-nav-link:hover,
.section-nav-link.active {
    background-color: var(--primary-blue);
    color: var(--pure-white);
}

/* ===== 移动端专属优化 ===== */
@media (max-width: 768px) {
    /* 基础布局优化 */
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }

    /* 确保锚点定位准确 */
    .service-content,
    .news-content {
        padding-top: var(--spacing-sm);
    }
    
    /* 确保锚点定位准确 */
    .section-anchor {
        top: -60px !important;
        visibility: hidden;
        height: 0;
    }
    
    /* 页面标题和横幅调整 */
    .page-header {
        margin-top: 0 !important;
        padding: var(--spacing-lg) 0 !important;
    }
    
    .hero {
        margin-top: 0 !important;
    }
    
    /* 内部导航栏不固定 */
    .section-nav {
        position: static !important;
        margin-bottom: var(--spacing-md);
        padding: 10px;
        top: auto !important;
    }
    
    .section-nav-list {
        flex-direction: column;
        gap: 8px;
    }
    
    .section-nav-link {
        width: 100%;
        text-align: center;
        padding: 12px;
        font-size: 0.9rem;
        margin: 2px 0;
    }
    
    /* 导航栏优化 */
    .header-inner {
        padding: 0 var(--spacing-sm);
    }
    
    .nav {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        height: calc(100vh - 60px);
        background: var(--dark-blue);
        display: none; /* 默认隐藏 */
        z-index: 1000;
        padding: 0;
        overflow-y: auto;
    }
    
    .nav.active {
        display: block; /* 激活时直接显示，无动画 */
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
        align-items: stretch;
        padding: 15px;
        height: auto;
        min-height: calc(100vh - 60px - 30px);
    }
    
    .nav-list > li {
        margin-bottom: 8px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-list > li:last-child {
        border-bottom: none;
    }
    
    .nav-list a {
        padding: 15px 12px;
        line-height: 1.4;
        height: auto;
        justify-content: flex-start;
        background: transparent;
        border-radius: 6px;
        margin-bottom: 0;
        font-size: 16px;
        display: flex;
        align-items: center;
        min-height: 50px;
        color: var(--pure-white);
    }
    
    .nav-list a:hover,
    .nav-list a.active {
        background: rgba(255, 255, 255, 0.15);
        color: var(--pure-white);
    }
    
    /* 统一下拉菜单移动端样式 */
    .dropdown {
        position: relative;
    }
    
    .dropdown > a {
        position: relative;
        padding-right: 40px;
    }
    
    .dropdown > a::after {
        content: '›';
        position: absolute;
        right: 15px;
        top: 50%;
        transform: translateY(-50%) rotate(90deg);
        font-size: 18px;
        color: var(--pure-white);
    }
    
    .dropdown.active > a::after {
        transform: translateY(-50%) rotate(-90deg);
    }
    
    .dropdown-menu {
        position: static;
        box-shadow: none;
        background: rgba(0, 0, 0, 0.2);
        border: none;
        padding: 0;
        margin: 8px 0 0 0;
        display: none;
        border-radius: 6px;
        overflow: hidden;
    }
    
    .dropdown.active .dropdown-menu {
        display: block; /* 直接显示，无动画 */
    }
    
    .dropdown-menu li {
        margin-bottom: 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .dropdown-menu li:last-child {
        border-bottom: none;
    }
    
    .dropdown-menu a {
        padding: 12px 20px;
        background: transparent;
        border-radius: 0;
        margin-bottom: 0;
        border-left: 3px solid transparent;
        font-size: 14px;
        min-height: 44px;
        color: rgba(255, 255, 255, 0.9);
        line-height: normal;
        height: auto;
        display: block;
    }
    
    .dropdown-menu a:hover {
        background: rgba(255, 255, 255, 0.1);
        color: var(--pure-white);
        border-left-color: var(--pure-white);
    }

    /* 统一页面标题大小 */
    .page-header h1 {
        font-size: 2rem !important;
    }
    
    .section-title {
        font-size: 1.8rem !important;
    }
    
    /* 汉堡菜单样式 */
    .nav-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 30px;
        height: 30px;
        cursor: pointer;
        position: relative;
        z-index: 1001;
    }
    
    .nav-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        background: var(--pure-white);
        margin: 3px 0;
        transition: all 0.3s ease;
        border-radius: 2px;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    body {
        overflow: auto !important;
        position: relative !important;
        height: auto !important;
    }
    
    /* 只有在导航激活时才隐藏滚动 */
    body.nav-open {
        overflow: hidden !important;
        position: fixed !important;
        width: 100% !important;
        height: 100% !important;
    }

     /* 当导航菜单打开时隐藏底部咨询栏 */
    body.nav-open .consultation-widget {
        display: none;
    }

     /* 改善触摸目标大小 */
    .btn, .section-nav-link, .nav-list a {
        min-height: 44px;
        min-width: 44px;
    }

     /* 改善表单元素 */
    input, select, textarea {
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    /* 改善图片显示 */
    img {
        max-width: 100%;
        height: auto;
    }
    
    /* 改善滚动体验 */
    .container {
        -webkit-overflow-scrolling: touch;
    }

    .slider-arrow {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .slider-controls {
        bottom: 20px;
    }
    
    /* 关于我们页面优化 */
    .about-company {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-md);
    }
    
    .about-image {
        height: 180px;
        order: -1;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        padding: var(--spacing-md);
        margin: var(--spacing-md) 0;
    }
    
    .stat-item {
        padding: var(--spacing-sm);
    }
    
    .stat-number {
        font-size: 1.6rem;
    }
    
    .about-text h3 {
        font-size: 1.3rem;
        text-align: center;
        margin-bottom: var(--spacing-md);
    }
    
    .about-text p {
        text-align: justify;
        font-size: 0.9rem;
        line-height: 1.6;
        margin-bottom: var(--spacing-md);
    }
    
    /* 时间线移动端重写 */
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 50px !important;
        padding-right: 0 !important;
        margin-bottom: var(--spacing-md);
    }
    
    .timeline-content-wrapper {
        flex-direction: row !important;
    }
    
    .timeline-year {
        position: absolute;
        left: 0;
        width: 40px;
        height: 40px;
        font-size: 0.8rem;
        margin-left: 0;
    }
    
    .timeline-year::after {
        right: -20px !important;
        width: 20px;
    }
    
    .timeline-year::before {
        right: -25px !important;
        width: 8px;
        height: 8px;
    }
    
    .timeline-content {
        margin: 0 0 0 12px !important;
        padding: 12px;
        min-height: auto;
    }
    
    .timeline-content h3 {
        font-size: 0.9rem;
        margin-bottom: 6px;
    }
    
    .timeline-content p {
        font-size: 0.8rem;
        line-height: 1.4;
        margin: 0;
    }
    
    /* 企业文化网格 */
    .culture-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .culture-item {
        padding: var(--spacing-md);
    }
    
    .culture-circle {
        width: 80px;
        height: 80px;
        margin-bottom: var(--spacing-md);
    }
    
    .culture-circle h3 {
        font-size: 0.9rem;
    }
    
    .culture-item p {
        font-size: 0.85rem;
        line-height: 1.5;
    }
    
    /* 产品网格优化 */
    .product-grid,
    .products-grid,
    .accessories-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .product-card {
        margin-bottom: var(--spacing-md);
    }
    
    .product-image {
        height: 140px;
    }
    
    .product-content {
        padding: var(--spacing-md);
    }
    
    .product-title {
        font-size: 1rem;
        line-height: 1.4;
    }
    
    .product-description {
        font-size: 0.85rem;
        line-height: 1.5;
    }
    
    /* 服务网格 */
    .service-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .service-card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-sm);
    }
    
    .service-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: var(--spacing-md);
    }
    
    .service-card h3 {
        font-size: 1.1rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .service-card p {
        font-size: 0.9rem;
        line-height: 1.5;
        margin-bottom: var(--spacing-md);
    }
    
    /* 新闻列表优化 */
    .news-item {
        flex-direction: column;
        margin-bottom: var(--spacing-md);
    }
    
    .news-date {
        flex-direction: row;
        justify-content: space-between;
        min-width: auto;
        padding: 10px 15px;
    }
    
    .news-date .day {
        font-size: 1.2rem;
    }
    
    .news-date .month {
        font-size: 0.8rem;
    }
    
    .news-content-inner {
        padding: var(--spacing-md);
    }
    
    .news-content-inner h3 {
        font-size: 0.95rem;
        line-height: 1.4;
        margin-bottom: 8px;
    }
    
    .news-content-inner p {
        font-size: 0.85rem;
        line-height: 1.5;
        margin: 0;
    }
    
    /* Footer优化 - 只显示联系信息 */
    .footer-content {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-lg) !important;
        text-align: center !important;
    }
    
    /* 隐藏除联系方式外的所有列 */
    .footer-column:not(.footer-contact) {
        display: none !important;
    }
    
    .footer-contact {
        grid-column: 1 !important;
        width: 100% !important;
        max-width: 400px !important;
        margin: 0 auto !important;
        text-align: center !important;
    }
    
    .footer-contact h4 {
        font-size: 1.3rem !important;
        margin-bottom: var(--spacing-lg) !important;
        text-align: center !important;
        border-bottom: 2px solid var(--primary-blue) !important;
        padding-bottom: var(--spacing-sm) !important;
        display: inline-block !important;
    }
    
    .footer-contact .contact-item {
        margin-bottom: var(--spacing-lg) !important;
        text-align: center !important;
        flex-direction: column !important;
        align-items: center !important;
    }
    
    .footer-contact .contact-icon {
        width: 50px !important;
        height: 50px !important;
        font-size: 1.2rem !important;
        margin-bottom: var(--spacing-sm) !important;
    }
    
    .footer-contact .contact-details {
        width: 100% !important;
    }
    
    .footer-contact .contact-details h5 {
        font-size: 1.1rem !important;
        margin-bottom: var(--spacing-xs) !important;
        color: var(--pure-white) !important;
    }
    
    .footer-contact .contact-details p {
        font-size: 0.95rem !important;
        line-height: 1.6 !important;
        color: rgba(255, 255, 255, 0.9) !important;
    }
    
    .footer-bottom {
        margin-top: var(--spacing-lg) !important;
        padding: var(--spacing-md) 0 !important;
        text-align: center !important;
        border-top: 1px solid rgba(255, 255, 255, 0.2) !important;
    }
    
    .footer-bottom p {
        font-size: 0.9rem !important;
        color: rgba(255, 255, 255, 0.8) !important;
    }
    
    /* 表格响应式 */
    .comparison-table {
        font-size: 0.8rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-sm);
    }
    
    /* 锚点导航优化 */
    .section-nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }
    
    .section-nav-link {
        text-align: center;
        padding: var(--spacing-md);
        font-size: 1rem;
    }
    
    /* 产品详情页优化 */
    .product-detail {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .product-gallery {
        position: static;
        margin-bottom: var(--spacing-lg);
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    /* 轮播图控制优化 */
    .honor-slide {
        min-width: 100%;
    }
    
    .patent-slide {
        min-width: 100%;
    }
    
    .carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .carousel-arrow.prev {
        left: 10px;
    }
    
    .carousel-arrow.next {
        right: 10px;
    }
    
    .honors-slider {
        height: 200px;
    }
    
    .patents-slider {
        height: 150px;
    }
    
    /* 首页轮播图优化 */
    .hero {
        height: 280px;
    }
    
    .slider-arrows {
        display: none;
    }
    
    .slider-controls {
        bottom: 10px;
    }
    
    .slider-dot {
        width: 8px;
        height: 8px;
    }

     /* 咨询弹窗移动端优化 */
    .consultation-modal .modal-content {
        height: 90vh;
    }
    
    .chat-container {
        flex-direction: column;
    }
    
    .chat-sidebar {
        width: 100%;
        max-height: 40%;
        border-right: none;
        border-bottom: 1px solid var(--medium-gray);
    }
    
    .chat-main {
        height: 60%;
    }
    
    .quick-questions {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 15px;
    }
    
    .quick-question {
        flex: 1;
        min-width: calc(50% - 8px);
        font-size: 0.8rem;
        padding: 10px;
    }
    
    .faq-categories {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
    
    .faq-category {
        margin-bottom: 15px;
    }
    
    .faq-item {
        font-size: 0.8rem;
        padding: 8px 0;
    }
}

/* 超小屏幕设备优化 */
@media (max-width: 480px) {
    .hero {
        height: 240px;
    }
    
    .about-image {
        height: 150px;
    }
    
    .container {
        padding: 0 12px;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }
    
    .stat-number {
        font-size: 1.4rem;
    }
    
    .patent-slide {
        min-width: 100%;
    }
    
    .honors-slider {
        height: 150px;
    }
    
    .patents-slider {
        height: 120px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }

    .footer-contact {
        max-width: 100% !important;
        padding: 0 var(--spacing-sm) !important;
    }
    
    .footer-contact h4 {
        font-size: 1.2rem !important;
    }
    
    .footer-contact .contact-icon {
        width: 45px !important;
        height: 45px !important;
        font-size: 1.1rem !important;
    }
    
    .footer-contact .contact-details h5 {
        font-size: 1rem !important;
    }
    
    .footer-contact .contact-details p {
        font-size: 0.9rem !important;
    }
    
    /* 服务卡片优化 */
    .service-card {
        padding: 15px;
    }
    
    .product-image {
        height: 120px;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
}

/* 触摸设备专属优化 */
@media (hover: none) and (pointer: coarse) {
    /* 增大触摸目标 */
    .btn,
    .section-nav-link,
    .carousel-dot,
    .slider-dot,
    .thumbnail {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .nav-list a {
        min-height: 50px;
    }
    
    /* 优化触摸反馈 */
    .product-card:active,
    .service-card:active,
    .news-item:active,
    .honor-item:active,
    .accessory-item:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
    
    /* 禁用hover效果，使用active状态 */
    .product-card:hover,
    .service-card:hover,
    .news-item:hover {
        transform: none;
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        height: 200px !important;
    }
    
    /* 调整导航菜单高度，充分利用屏幕空间 */
    .nav {
        height: calc(100vh - 60px); /* 只减去头部高度 */
        padding-bottom: 0;
    }
    
    .about-image {
        height: 150px;
    }

    .quick-question {
        min-width: 100%;
    }
    
    .faq-categories {
        grid-template-columns: 1fr;
    }
    
    .message-content {
        max-width: 90%;
    }
}

/* 桌面端响应式调整 */
@media (max-width: 768px) {
    .product-detail {
        grid-template-columns: 1fr;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .comparison-table {
        font-size: 0.9rem;
    }
    
    .section-nav-list {
        flex-direction: column;
        align-items: center;
    }
}