.about-banner {
    width: 100%;
    max-height: 300px;
    overflow: hidden;
}

.about-banner img {
    width: 100%;
    min-height: 300px;
    object-fit: cover;
}

.about-nav {
    background: #fff;
    border-bottom: 1px solid #eee;
}

.about-nav .container-nav {
    display: flex;
    gap: 21px;
    justify-content: flex-end;
    padding: 22.5px;
    width: 70%;
    margin: 0 auto;
}

.container-nav li {
    background: url(../images/nav-d.png) no-repeat left center;
}

.container-nav li:first-child {
    background: none;
}

.about-nav a {
    color: rgba(153, 153, 153, 1);
    padding-left: 21px;
}

.about-nav .container-nav .active a {
    color: rgba(19, 99, 170, 1);
    font-weight: 600;
}

.about-nav .container-nav a:hover {
    color: rgba(19, 99, 170, 1);
    font-weight: 600;
}

.container {
    position: relative;
}

.breadcrumb {
    font-size: 14px;
    color: rgba(102, 100, 97, 1);
    background: url(../images/yuan.png) no-repeat left center;
    padding-left: 16px;
    position: absolute;
    top: -43px;
    left: 15%;
}

.breadcrumb a {
    color: rgba(102, 100, 97, 1);
}

@media (max-width: 991px) {
    .breadcrumb {
        display: none;
    }
}

.lsyg-title {
    color: rgba(51, 51, 51, 1);
    font-size: 22.5px;
    font-weight: 600;
    padding-top: 60px;
    padding-bottom: 30px;
}

/* 产品介绍文字样式 */
.product-intro {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.product-intro-text {
    flex: 1;
}

.product-intro-text h3 {
    color: rgba(115, 114, 111, 1);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
}

.product-intro-text p {
    color: rgba(115, 114, 111, 1);
    font-size: 14px;
    font-weight: 400;
    line-height: 1.8;
    margin-bottom: 25px;
    text-align: justify;
}

.product-intro-text p:last-child {
    margin-bottom: 0;
}

.product-intro-text .product-brand {
    display: block;
    width: 300px;
    height: 82px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    text-align: center;
    margin-bottom: 5px;
}

.product-intro-img {
    flex: 1;
    max-width: 600px;
}

.product-intro-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 移动端产品介绍样式优化 */
@media (max-width: 768px) {
    .product-intro {
        flex-direction: column;
        gap: 20px;
        padding-bottom: 20px;
    }
    
    .product-intro-text h3 {
        font-size: 16px;
        margin-bottom: 8px;
    }
    
    .product-intro-text p {
        font-size: 14px;
        line-height: 1.6;
        margin-bottom: 20px;
    }
    
    .product-intro-img {
        order: -1;
    }
    
    .product-intro-img img {
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }

    .lsyg-title{
        font-size:20px;
        padding-top:30px;
    }
}

@media (max-width: 480px) {
    .product-intro {
        gap: 15px;
        padding-bottom: 15px;
    }
    
    .product-intro-text h3 {
        font-size: 15px;
        margin-bottom: 6px;
    }
    
    .product-intro-text p {
        font-size: 13px;
        line-height: 1.5;
        margin-bottom: 15px;
    }
    
    .lsyg-title {
        font-size: 18px;
        padding-top: 30px;
        padding-bottom: 15px;
    }
}

/* 板块标题样式 */
.section-title {
    color: rgba(19, 99, 170, 1);
    font-size: 18px;
    font-weight: 600;
    padding-bottom: 30px;
    padding-top: 50px;
}

/* 资料下载板块样式 */
.zlxz-section {
    margin-bottom: 60px;
}

.zlxz-cards {
    display: flex;
    gap: 18px;
    justify-content: flex-start;
    align-items: flex-start;
    flex-wrap: wrap;
    padding: 0 0 20px 0;
}

.zlxz-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    width:18.5%;
   
}

.zlxz-cover {
    position: relative;
    width: 100%;
    max-width: 200px;
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.zlxz-cover:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.cover-image {
    position: relative;
    width: 100%;
    height: 270px;
    overflow: hidden;
}

.cover-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease, opacity 0.3s ease;
    object-fit:cover;
}

.zlxz-cover:hover .cover-image img {
    transform: scale(1.05);
}

.preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.preview-overlay img {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

.zlxz-cover:hover .preview-overlay {
    opacity: 1;
}

.download-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.6);
    padding: 10px 12px;
    text-align: center;
    backdrop-filter: blur(10px);
    opacity: 0;
    transform: translateY(100%);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.zlxz-cover:hover .download-info {
    opacity: 1;
    transform: translateY(0);
}

.download-link {
    color: white;
    text-decoration: none;
    font-size: 12px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.download-link:hover {
    color: rgba(19, 99, 170, 1);
    text-decoration: underline;
}

.zlxz-title {
    color: rgba(51, 51, 51, 1);
    font-size: 14px;
    font-weight: 400;
    text-align: center;
    line-height: 1.4;
    margin-top: 8px;
    transition: color 0.3s ease;
}

.zlxz-title:hover {
    color: rgba(19, 99, 170, 1);
    font-weight: 600;
}

@media (max-width: 1200px) {
    .product-intro {
        flex-direction: column;
    }

    .zlxz-cards {
        gap: 14px;
    }
}

@media (max-width: 992px) {
    .product-intro {
        flex-direction: column;
    }
    
    .zlxz-card {
        flex-basis: calc(25% - 14.4px);
    }
}

/* 移动端资料下载样式优化 */
@media (max-width: 768px) {
    .zlxz-section {
        margin-bottom: 40px;
    }
    
    .zlxz-cards {
        gap: 15px;
        padding: 0 0 15px 0;
        justify-content: center;
    }
    
    .zlxz-card {
        flex-basis: calc(33.333% - 10px);
        min-width: 140px;
        max-width: 180px;
    }
    
    .zlxz-cover {
        max-width: 140px;
        margin-bottom: 12px;
    }
    
    .cover-image {
        height: 180px;
    }
    
    .zlxz-title {
        font-size: 12px;
        margin-top: 6px;
        line-height: 1.3;
    }
    
    .download-info {
        padding: 8px 10px;
    }
    
    .download-link {
        font-size: 11px;
    }
    
    .preview-overlay img {
        width: 32px;
        height: 32px;
    }
    
    /* 移动端触摸优化 */
    .zlxz-cover:active {
        transform: scale(0.98);
    }
    
    .zlxz-cover:active .preview-overlay {
        opacity: 1;
    }
}

@media (max-width: 480px) {
    .zlxz-cards {
        gap: 12px;
        padding: 0 0 12px 0;
    }
    
    .zlxz-card {
        flex-basis: calc(50% - 6px);
        min-width: 120px;
        max-width: 160px;
    }
    
    .zlxz-cover {
        max-width: 120px;
        margin-bottom: 10px;
    }
    
    .cover-image {
        height: 160px;
    }
    
    .zlxz-title {
        font-size: 11px;
        margin-top: 5px;
    }
    
    .download-info {
        padding: 6px 8px;
    }
    
    .download-link {
        font-size: 10px;
    }
    
    .preview-overlay img {
        width: 28px;
        height: 28px;
    }
    
    .section-title {
        font-size: 16px;
        padding-bottom: 20px;
        padding-top: 30px;
    }
}

@media (max-width: 360px) {
    .zlxz-cards {
        gap: 10px;
    }
    
    .zlxz-card {
        flex-basis: calc(50% - 5px);
        min-width: 100px;
        max-width: 140px;
    }
    
    .zlxz-cover {
        max-width: 100px;
    }
    
    .cover-image {
        height: 140px;
    }
    
    .zlxz-title {
        font-size: 10px;
    }
}

/* 动画效果 */
.zlxz-card {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 加载动画 */
.cover-image img:not([src]) {
    opacity: 0;
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    .zlxz-card,
    .cover-image img,
    .preview-overlay,
    .zlxz-cover {
        animation: none;
        transition: none;
    }
}


/* 系列产品板块样式 */
.product-content2 {
    background: rgba(245, 245, 245, 1);
}

.products-section {
    padding-bottom: 60px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-card {
    overflow: hidden;
    transition: all 0.3s ease;
}

.product-card:hover .product-image {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.product-image {
    position: relative;
    height: 160px;
    border-radius: 4px;
    overflow: hidden;
    transition: all 0.3s ease;
    background:#fff;
     border-radius:10px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    border-radius:10px;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    cursor: pointer;
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-overlay img {
    width: 40px;
    height: 40px;
}

.product-title {
    color: rgba(51, 51, 51, 1);
    font-size: 16px;
    font-weight: 400;
    text-align: center;
    padding: 15px;
    margin: 0;
    transition: all 0.3s ease;
}

.product-card:hover .product-title {
    color: rgba(19, 99, 170, 1);
    font-weight: 600;
}

/* 移动端系列产品样式优化 */
@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
    }
    
    .product-image {
        height: 140px;
    }
    
    .product-title {
        font-size: 15px;
        padding: 12px;
    }
}

@media (max-width: 768px) {
    .products-section {
        padding-bottom: 40px;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .product-image {
        height: 120px;
        border-radius: 6px;
    }
    
    .product-title {
        font-size: 14px;
        padding: 10px;
        line-height: 1.3;
    }
    
    .product-overlay img {
        width: 32px;
        height: 32px;
    }
    
    /* 移动端触摸优化 */
    .product-card:active .product-image {
        transform: scale(0.98);
    }
    
    .product-card:active .product-overlay {
        opacity: 1;
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .product-image {
        height: 100px;
        border-radius: 4px;
    }
    
    .product-title {
        font-size: 12px;
        padding: 8px;
        line-height: 1.2;
    }
    
    .product-overlay img {
        width: 28px;
        height: 28px;
    }
    
    .section-title {
        font-size: 16px;
        padding-bottom: 20px;
        padding-top: 30px;
    }
}

@media (max-width: 360px) {
    .products-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .product-image {
        height: 120px;
    }
    
    .product-title {
        font-size: 13px;
        padding: 10px;
    }
}

/* 悬停效果样式 */
.product-card.hover .product-image {
    box-shadow: 0 8px 10px rgba(0, 0, 0, 0.15);
    transform: translateY(-4px);
}

/* 产品卡片光标样式 */
.product-card {
    cursor: pointer;
}

/* 面包屑导航移动端优化 */
@media (max-width: 768px) {
    .breadcrumb {
        position: relative;
        top: 0;
        left: 0;
        background: none;
        padding-left: 0;
        margin-bottom: 15px;
        font-size: 12px;
        color: rgba(102, 100, 97, 0.8);
    }
    
    .breadcrumb a {
        color: rgba(102, 100, 97, 0.8);
    }
    
    .about-nav .container-nav {
        width: 90%;
        padding: 15px;
        gap: 15px;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .about-nav a {
        font-size: 14px;
        padding-left: 15px;
    }
    
    .about-banner {
        max-height: 200px;
    }
    
    .about-banner img {
        min-height: 200px;
    }
}

@media (max-width: 480px) {
    .breadcrumb {
        font-size: 11px;
        margin-bottom: 10px;
    }
    
    .about-nav .container-nav {
        width: 95%;
        padding: 12px;
        gap: 12px;
    }
    
    .about-nav a {
        font-size: 13px;
        padding-left: 12px;
    }
    
    .about-banner {
        max-height: 150px;
    }
    
    .about-banner img {
        min-height: 150px;
    }
    
    .boxW {
        width: 95%;
    }
}

@media (max-width: 360px) {
    .about-nav .container-nav {
        width: 100%;
        padding: 10px;
        gap: 10px;
    }
    
    .about-nav a {
        font-size: 12px;
        padding-left: 10px;
    }
    
    .about-banner {
        max-height: 120px;
    }
    
    .about-banner img {
        min-height: 120px;
    }
}

/* 触摸友好的交互优化 */
@media (hover: none) and (pointer: coarse) {
    .zlxz-cover:hover {
        transform: none;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    
    .zlxz-cover:hover .cover-image img {
        transform: none;
    }
    
    .zlxz-cover:hover .preview-overlay {
        opacity: 0;
    }
    
    .zlxz-cover:hover .download-info {
        opacity: 0;
        transform: translateY(100%);
    }
    
    .product-card:hover .product-image {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        transform: none;
    }
    
    .product-card:hover .product-image img {
        transform: none;
    }
    
    .product-card:hover .product-overlay {
        opacity: 0;
    }
    
    .product-card:hover .product-title {
        color: rgba(51, 51, 51, 1);
        font-weight: 400;
    }
}

/* 性能优化 */
@media (prefers-reduced-motion: reduce) {
    .zlxz-card,
    .cover-image img,
    .preview-overlay,
    .zlxz-cover,
    .product-card,
    .product-image,
    .product-overlay {
        animation: none;
        transition: none;
    }
}

/* 高对比度模式支持 */
/* @media (prefers-contrast: high) {
    .zlxz-title,
    .product-title {
        color: #000;
        font-weight: 600;
    }
    
    .zlxz-cover,
    .product-image {
        border: 2px solid #000;
    }
} */

/* 深色模式支持 */
/* @media (prefers-color-scheme: dark) {
    .zlxz-title,
    .product-title {
        color: #fff;
    }
    
    .zlxz-cover,
    .product-image {
        background: #333;
    }
} */

/* 加载状态和错误处理 */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #1976d2;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.error {
    border: 1px solid #ff4444;
    background: rgba(255, 68, 68, 0.1);
}

.error::before {
    content: '加载失败';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ff4444;
    font-size: 12px;
    background: white;
    padding: 4px 8px;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 移动端图片懒加载优化 */
.lazy-image {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lazy-image.loaded {
    opacity: 1;
}

/* 移动端滚动优化 */
@media (max-width: 768px) {
    .zlxz-cards,
    .products-grid {
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
    }
    
    /* 防止iOS橡皮筋效果 */
    body {
        overscroll-behavior: none;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 导航栏移动端样式 */
    .about-nav .container-nav {
        flex-direction: column;
        gap: 0;
        padding: 0;
        width: 100%;
        margin: 0;
    }

    .about-nav .container-nav li {
        background: none;
        border-bottom: 1px solid #eee;
    }

    .about-nav .container-nav li:first-child {
        background: none;
    }

    .about-nav a {
        padding: 15px 20px;
        display: block;
        text-align: center;
        font-size: 16px;
    }

    .about-nav .container-nav .active a {
        background: rgba(19, 99, 170, 0.1);
        border-left: 4px solid rgba(19, 99, 170, 1);
    }

    /* 面包屑导航移动端样式 */
    .breadcrumb {
        display: none;
    }
}

/* 超小屏幕样式 */
@media (max-width: 480px) {
    .about-nav a {
        padding: 12px 15px;
        font-size: 14px;
    }

}