* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航栏 */
.header {
    background: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo img {
    height: 50px;
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li {
    margin-left: 30px;
    position: relative;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
    display: block;
    padding: 10px 0;
}

.nav-menu a:hover {
    color: #0066cc;
}

/* 二级菜单样式 */
.has-submenu {
    position: relative;
}

.has-submenu > a::after {
    content: '▼';
    font-size: 0.8rem;
    margin-left: 5px;
    vertical-align: middle;
}

.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    min-width: 150px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-radius: 4px;
    overflow: hidden;
    z-index: 1000;
    display: none;
}

.has-submenu:hover .submenu {
    display: block;
}

.submenu li {
    margin: 0;
    border-bottom: 1px solid #f0f0f0;
}

.submenu li:last-child {
    border-bottom: none;
}

.submenu a {
    padding: 10px 15px;
    color: #333;
    transition: background 0.3s, color 0.3s;
}

.submenu a:hover {
    background: #f5f5f5;
    color: #0066cc;
}

.mobile-menu-btn {
    display: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background: #333;
    margin: 5px 0;
    transition: all 0.3s;
}

/* 轮播图 */
.carousel {
    position: relative;
    overflow: hidden;
}

.carousel-inner {
    position: relative;
    height: 500px;
}

.carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.carousel-item.active {
    opacity: 1;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.5);
    color: #fff;
    padding: 30px;
}

.carousel-caption h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.carousel-caption p {
    font-size: 1.2rem;
}

/* 轮播指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: #fff;
    width: 30px;
    border-radius: 6px;
}

/* TAB切换图片效果 */
.tab-images {
    padding: 60px 0;
    background: #f9f9f9;
}

.tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    gap: 20px;
}

.tab-btn {
    padding: 12px 24px;
    border: 1px solid #e0e0e0;
    background: #fff;
    cursor: pointer;
    font-size: 1rem;
    color: #333;
    border-radius: 4px;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: #f5f5f5;
    border-color: #0066cc;
}

.tab-btn.active {
    background: #0066cc !important;
    color: #fff !important;
    border-color: #0066cc !important;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.tab-image-item {
    background: #fff;
    padding: 20px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
    cursor: pointer;
}

.tab-image-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.tab-image-item.active {
    background: #0066cc !important;
}

.tab-image-item.active h3,
.tab-image-item.active p {
    color: #fff !important;
}

.tab-image-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 15px;
}

.tab-image-item h3 {
    margin-bottom: 10px;
    color: #333;
    transition: color 0.3s;
}

.tab-image-item p {
    color: #666;
    transition: color 0.3s;
}

/* 面包屑导航 */
.breadcrumb {
    background: #f5f5f5;
    padding: 15px 0;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: #0066cc;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 页面标题 */
.page-title {
    text-align: center;
    margin: 40px 0;
    font-size: 2.5rem;
    color: #333;
}

/* 通用样式 */
.section-title {
    text-align: center;
    margin: 60px 0 40px;
    font-size: 2rem;
    color: #333;
}

/* 产品展示 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.product-item {
    background: #f9f9f9;
    padding: 20px;
    text-align: center;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
    cursor: pointer;
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.product-item.active {
    background: #0066cc;
}

.product-item.active h3,
.product-item.active p {
    color: #fff !important;
}

.product-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 15px;
}

.product-item h3 {
    margin-bottom: 10px;
    color: #333;
    transition: color 0.3s;
}

.product-item p {
    color: #666;
    transition: color 0.3s;
}

/* 关于我们 */
.about {
    background: #f5f5f5;
    padding: 60px 0;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 40px;
}

.about-text {
    flex: 1;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    border-radius: 8px;
}

.about-text h2 {
    text-align: left;
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 15px;
    line-height: 1.8;
	
}

/* 技术支持 */
.support {
    padding: 60px 0;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.support-item {
    background: #fff;
    padding: 30px;
    text-align: center;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    transition: transform 0.3s;
}

.support-item:hover {
    transform: translateY(-5px);
}

.support-item h3 {
    margin-bottom: 10px;
    color: #333;
}

.support-item p {
    color: #666;
}

/* 新闻资讯 */
.news {
    background: #f9f9f9;
    padding: 60px 0;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.news-item {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.news-item h3 {
    margin-bottom: 10px;
    color: #333;
}

.news-date {
    color: #999;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.news-item p {
    color: #666;
}

/* 联系我们 */
.contact {
    padding: 60px 0;
}

.contact-content {
    display: flex;
    gap: 40px;
}

.contact-info {
    flex: 1;
}

.contact-form {
    flex: 1;
}

.contact-info p {
    margin-bottom: 15px;
    line-height: 1.6;
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    font-size: 1rem;
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form button {
    padding: 12px 24px;
    background: #0066cc;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s;
}

.contact-form button:hover {
    background: #0052a3;
}

/* 关于我们页面 */
.about-page {
    padding: 40px 0;
}

.history-section {
    margin: 60px 0;
}

.history-timeline {
    position: relative;
    padding-left: 30px;
}

.history-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e0e0e0;
}

.history-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 30px;
}

.history-item::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #0066cc;
    border: 4px solid #f0f0f0;
}

.history-year {
    font-size: 1.2rem;
    font-weight: bold;
    color: #0066cc;
    margin-bottom: 10px;
}

.history-content h3 {
    margin-bottom: 10px;
    color: #333;
}

.culture-section {
    margin: 60px 0;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.culture-item {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
}

.culture-item h3 {
    margin-bottom: 15px;
    color: #333;
}

.honor-section {
    margin: 60px 0;
}

.honor-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

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

.honor-item img {
    width: 100%;
    height: 150px;
    object-fit: contain;
    margin-bottom: 15px;
}

.honor-item h3 {
    font-size: 1rem;
    color: #333;
}

/* 产品中心页面 */
.products-page {
    padding: 40px 0;
}

.product-categories {
    margin-bottom: 40px;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 15px;
}

.category-list {
    display: flex;
    list-style: none;
    gap: 20px;
}

.category-list li {
    margin-right: 10px;
}

.category-list a {
    text-decoration: none;
    color: #333;
    padding: 8px 15px;
    border-radius: 4px;
    transition: all 0.3s;
}

.category-list li.active a,
.category-list a:hover {
    background: #0066cc !important;
    color: #fff !important;
}

.products-list {
    margin-bottom: 40px;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.pagination a {
    padding: 8px 15px;
    border: 1px solid #e0e0e0;
    text-decoration: none;
    color: #333;
    border-radius: 4px;
    transition: all 0.3s;
}

.pagination a.active,
.pagination a:hover {
    background: #0066cc;
    color: #fff;
    border-color: #0066cc;
}

/* 产品详情页面 */
.product-detail {
    padding: 40px 0;
}

.product-info {
    display: flex;
    gap: 40px;
    margin-bottom: 60px;
}

.product-images {
    flex: 1;
}

.main-image {
    margin-bottom: 20px;
}

.main-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 8px;
}

.thumbnails {
    display: flex;
    gap: 10px;
}

.thumbnails img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.3s;
}

.thumbnails img:hover {
    transform: scale(1.05);
}

.product-details {
    flex: 1;
}

.feature-list {
    list-style: none;
    margin-bottom: 30px;
}

.feature-list li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #0066cc;
    font-weight: bold;
}

.product-specs table {
    width: 100%;
    border-collapse: collapse;
}

.product-specs table tr {
    border-bottom: 1px solid #e0e0e0;
}

.product-specs table td {
    padding: 10px;
}

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

.product-description {
    margin-bottom: 60px;
}

.product-description p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.applicable-models {
    margin-bottom: 60px;
}

.models-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.model-category h3 {
    margin-bottom: 15px;
    color: #333;
}

.related-products {
    margin-top: 60px;
}

/* 技术支持页面 */
.support-page {
    padding: 40px 0;
}

.support-tabs {
    margin-top: 40px;
}

.tab-buttons {
    display: flex;
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 30px;
}

.tab-btn {
    padding: 12px 24px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1rem;
    color: #333;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab-btn.active {
    color: #0066cc;
    border-bottom-color: #0066cc;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.download-section h2 {
    margin: 40px 0 20px;
    font-size: 1.5rem;
    color: #333;
}

.download-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.download-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
}

.download-info h3 {
    margin-bottom: 10px;
    color: #333;
}

.download-info p {
    margin-bottom: 5px;
    color: #666;
    font-size: 0.9rem;
}

.download-btn a {
    padding: 10px 20px;
    background: #0066cc;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
}

.download-btn a:hover {
    background: #0052a3;
}

.faq-section {
    margin-top: 40px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.faq-item {
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: #f9f9f9;
    cursor: pointer;
    transition: background 0.3s;
}

.faq-question:hover {
    background: #f0f0f0;
}

.faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
    color: #333;
}

.faq-toggle {
    font-size: 1.5rem;
    color: #0066cc;
    transition: transform 0.3s;
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s;
}

.faq-answer p {
    margin: 20px 0;
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.service-section {
    margin-top: 40px;
}

.service-network {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.service-area h3 {
    margin-bottom: 20px;
    color: #333;
}

.service-list {
    list-style: none;
}

.service-list li {
    margin-bottom: 20px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
}

.service-list li strong {
    display: block;
    margin-bottom: 10px;
    color: #333;
}

.service-list li p {
    margin-bottom: 5px;
    color: #666;
}

/* 新闻资讯页面 */
.news-page {
    padding: 40px 0;
}

.news-categories {
    margin-bottom: 40px;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 15px;
}
.news-categories a{
	 display: inline-block;
    padding: 8px 16px;
   
    color:#000000;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
	
}
.news-categories .active {
	color:#fff;
    background: #0066cc !important;
}
 

.news-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-item {
    display: flex;
    gap: 30px;
    padding: 30px;
    background: #f9f9f9;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.news-image {
    flex: 0 0 200px;
}

.news-image img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
}

.news-content {
    flex: 1;
}

.news-content h3 {
    margin-bottom: 15px;
    color: #333;
}

.news-content h3 a {
    text-decoration: none;
    color: #333;
    transition: color 0.3s;
}

.news-content h3 a:hover {
    color: #0066cc;
}

.news-date {
    color: #999;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.news-summary {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.read-more {
    display: inline-block;
    padding: 8px 16px;
    background: #0066cc;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
}

.read-more:hover {
    background: #0052a3;
}

/* 联系我们页面 */
.contact-page {
    padding: 40px 0;
}

/* 新闻资讯详情页面 */
.news-detail {
    padding: 40px 0;
}

.news-info {
    display: flex;
    gap: 30px;
    margin: 30px 0;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
}

.news-info span {
    color: #666;
}

.news-image {
    margin: 30px 0;
    border-radius: 8px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.news-content {
    margin: 30px 0;
}

.news-content h3 {
    margin: 30px 0 15px;
    color: #333;
}

.news-content p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.news-content ul,
.news-content ol {
    margin: 15px 0;
    padding-left: 20px;
}

.news-content li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.related-news {
    margin: 60px 0;
    padding: 30px;
    background: #f9f9f9;
    border-radius: 8px;
}

.related-news h3 {
    margin-bottom: 20px;
    color: #333;
}

.related-news ul {
    list-style: none;
}

.related-news li {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}

.related-news li:last-child {
    border-bottom: none;
}

.related-news a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s;
}

.related-news a:hover {
    color: #0066cc;
}

.news-actions {
    margin: 40px 0;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
}

.share-buttons {
    display: flex;
    align-items: center;
    gap: 15px;
}

.share-btn {
    padding: 8px 16px;
    background: #0066cc;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
}

.share-btn:hover {
    background: #0052a3;
}

/* 资料下载页面 */
.downloads-page {
    padding: 40px 0;
}

.download-categories {
    margin-bottom: 40px;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 15px;
}
.download-categories a{
	 display: inline-block;
    padding: 8px 16px;
    color:#000000;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
	
}
.download-categories .active{
	color:#fff;
    background: #0066cc !important;
}

.downloads-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
	min-height: 500px;
}

.download-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.download-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.download-info {
    flex: 1;
}

.download-info h3 {
    margin-bottom: 10px;
    color: #333;
}

.download-info h3 a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s;
}

.download-info h3 a:hover {
    color: #0066cc;
}

.download-description {
    margin-bottom: 10px;
    color: #666;
    line-height: 1.6;
}

.download-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.download-meta span {
    color: #999;
    font-size: 0.9rem;
}

.download-btn a {
    padding: 12px 24px;
    background: #0066cc;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
}

.download-btn a:hover {
    background: #0052a3;
}

/* 资料下载详情页面 */
.download-detail {
    padding: 40px 0;
}

.download-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin: 30px 0;
    padding: 30px;
    background: #f9f9f9;
    border-radius: 8px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.info-item strong {
    flex: 0 0 100px;
    color: #333;
}

.info-item span {
    flex: 1;
    color: #666;
}

.download-action {
    margin: 40px 0;
    text-align: center;
}

.download-action .download-btn {
    display: inline-block;
    padding: 15px 30px;
    background: #0066cc;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-size: 1.1rem;
    transition: background 0.3s;
}

.download-action .download-btn:hover {
    background: #0052a3;
}

.download-tip {
    margin-top: 15px;
    color: #666;
    font-size: 0.9rem;
}

.download-description {
    margin: 40px 0;
}

.download-description h3 {
    margin: 30px 0 15px;
    color: #333;
}

.download-description p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.download-description ul,
.download-description ol {
    margin: 15px 0;
    padding-left: 20px;
}

.download-description li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.related-downloads {
    margin: 60px 0;
    padding: 30px;
    background: #f9f9f9;
    border-radius: 8px;
}

.related-downloads h3 {
    margin-bottom: 20px;
    color: #333;
}

.related-downloads ul {
    list-style: none;
}

.related-downloads li {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}

.related-downloads li:last-child {
    border-bottom: none;
}

.related-downloads a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s;
}

.related-downloads a:hover {
    color: #0066cc;
}

.contact-info {
    display: flex;
    gap: 40px;
    margin-bottom: 60px;
}

.contact-details {
    flex: 1;
}

.contact-details h2 {
    margin-bottom: 30px;
    color: #333;
}

.contact-details ul {
    list-style: none;
}

.contact-details li {
    display: flex;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e0e0e0;
}

.contact-details li:last-child {
    border-bottom: none;
}

.contact-details li strong {
    flex: 0 0 100px;
    color: #333;
}

.contact-details li span {
    flex: 1;
    color: #666;
}

.contact-map {
    flex: 1;
}

.contact-map h2 {
    margin-bottom: 30px;
    color: #333;
}

.map-placeholder {
    position: relative;
    height: 400px;
    border-radius: 8px;
    overflow: hidden;
}

.map-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.map-placeholder p {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.5);
    color: #fff;
    padding: 15px;
    margin: 0;
}

.contact-form-section {
    margin-top: 60px;
}

.contact-form-section h2 {
    margin-bottom: 30px;
    color: #333;
}

.contact-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 10px;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.submit-btn {
    padding: 12px 24px;
    background: #0066cc;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: #0052a3;
}

/* 页脚 */
.footer {
    background: #333;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 30px;
}

.footer-logo img {
    height: 125px;
	width: 125px;
    margin-bottom: 20px;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #fff;
}

.footer-contact p {
    margin-bottom: 10px;
    color: #ccc;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #444;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 导航栏 */
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: #fff;
        width: 100%;
        text-align: left;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 0 20px;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 0;
        border-bottom: 1px solid #f0f0f0;
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-menu a {
        padding: 15px 0;
    }

    .mobile-menu-btn {
        display: block;
    }

    /* 移动端二级菜单 */
    .has-submenu > a::after {
        content: '►';
        float: right;
        margin-right: 10px;
        transition: transform 0.3s ease;
    }

    .has-submenu.active > a::after {
        transform: rotate(90deg);
    }

    .submenu {
        position: static;
        box-shadow: none;
        border: none;
        margin-left: 20px;
        display: none;
    }

    .has-submenu:hover .submenu {
        display: none;
    }

    .has-submenu.active .submenu {
        display: block;
    }

    .submenu li {
        border-bottom: 1px solid #f0f0f0;
    }

    .submenu a {
        padding: 10px 0;
    }

    /* 轮播图 */
    .carousel-item img {
        height: 300px;
    }

    .carousel-caption h2 {
        font-size: 1.8rem;
    }

    .carousel-caption p {
        font-size: 1rem;
    }

    /* 产品展示 */
    .products-grid {
        grid-template-columns: 1fr;
    }

    /* 关于我们 */
    .about-content {
        flex-direction: column;
        text-align: center;
    }

    .about-text h2 {
        text-align: center;
    }

    /* 技术支持 */
    .support-grid {
        grid-template-columns: 1fr;
    }

    /* 新闻资讯 */
    .news-grid {
        grid-template-columns: 1fr;
    }

    /* 联系我们 */
    .contact-content {
        flex-direction: column;
    }

    /* 页脚 */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    /* TAB切换图片效果移动端 */
    .tabs {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }

    .tab-btn {
        width: 100%;
        max-width: 300px;
    }

    .tab-image-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    /* 产品展示 */
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 技术支持 */
    .support-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* TAB切换图片效果平板端 */
    .tab-image-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 993px) and (max-width: 1200px) {
    /* 调整容器宽度 */
    .container {
        max-width: 960px;
    }
}