/* 关于页面特定样式 */


/* Banner样式 */
.about-banner { position: relative; width: 100%; height: 684px; overflow: hidden; }
.about-banner-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.about-banner-bg img { width: 100%; height: 100%; object-fit: cover; }
.about-banner .container { position: relative; height: 100%; z-index: 1; }
.breadcrumb { position: absolute; bottom: 20px; left: 0; font-size: 18px; font-weight: 500; color: #fff; }
.breadcrumb a { color: #fff; text-decoration: none; }
.breadcrumb span { margin: 0 8px; color: #fff; }
.about-banner-content { position: absolute; top: 50%; transform: translateY(-50%); }

@media screen and (max-width: 768px) {
.about-banner-content { top: 50px !important; transform: none !important; }
}
.about-banner-content2 { position: absolute; top: 50%; transform: translateY(-50%); }
.about-banner-content h1 { font-size: 42px; color: #fff; margin: 0; line-height: 1.2; }
.about-banner-content p { font-size: 36px; font-weight: 400; margin-bottom: 30px; line-height: 1.5; color: #fff; text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); }
/* 应用领域Banner */

.product-banner { height: 40vw; /* 使用视窗宽度的百分比 */ max-height: 565px; /* 保持最大高度限制 */ min-height: 300px; /* 添加最小高度，避免在小屏幕上太矮 */ background-image: url('../images/application-banner.jpg'); background-size: cover; background-position: center; position: relative; display: flex; align-items: center; }
.product-banner::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.2); }
.product-banner .banner-content { position: relative; z-index: 2; color: #fff; padding-left: 50px; }
.product-banner h1 { font-size: 48px; font-weight: 700; margin-bottom: 10px; }
.product-banner h2 { font-size: 36px; font-weight: 300; margin-bottom: 30px; opacity: 0.8; }
.breadcrumb { font-size: 16px; color: rgba(255, 255, 255, 0.8); }
.breadcrumb a { color: #fff; text-decoration: none; transition: color 0.3s ease; }
.breadcrumb a:hover { color: #4CAF50; }

/* 响应式调整 */

@media (max-width: 992px) {
.product-banner { height: 50vw; /* 在中等屏幕上增加高度比例 */ }
.product-banner h1 { font-size: 36px; }
.product-banner h2 { font-size: 28px; }
}

@media (max-width: 768px) {
.product-banner { height: 60vw; /* 在小屏幕上进一步增加高度比例 */ }
.product-banner h1 { font-size: 30px; }
.product-banner h2 { font-size: 24px; }
.product-banner .banner-content { padding-left: 30px; padding-right: 30px; margin-top: 80px; text-align: center; }
}

@media (max-width: 576px) {
.product-banner { height: 70vw; /* 在超小屏幕上使用更大的高度比例 */ }
.product-banner h1 { font-size: 26px; }
.product-banner h2 { font-size: 20px; }
}
/* 产品矩阵部分 */




.product-intro { margin-bottom: 40px; padding-left: 0; padding-right: 0; max-width: 100%; }
.product-intro p { margin-bottom: 10px; line-height: 1.8; color: #333; font-size: 20px; font-weight: 500; }
.product-intro .tech-support { color: #666; font-size: 14px; }
.product-categories { display: grid; grid-template-columns: repeat(3, 1fr); grid-gap: 20px; margin-top: 30px; width: 100%; padding-left: 0; padding-right: 0; max-width: 100%; overflow: hidden; }
/* 清除之前的布局设置 */

.product-category-item:nth-child(1),  .product-category-item:nth-child(2),  .product-category-item:nth-child(3),  .product-category-item:nth-child(4),  .product-category-item:nth-child(5) { grid-column: auto; grid-row: auto; }
.product-category-item { border-radius: 0; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,0.05); transition: transform 0.3s ease; position: relative; background-color: #fff; border: none; height: 100%; display: flex; flex-direction: column; width: 100%; }
.product-category-item:hover { transform: translateY(-5px); box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
.product-category-image { height: 220px; overflow: hidden; background-color: #f9f9f9; display: flex; align-items: center; justify-content: center; flex: 1; }
.product-category-image img { width: 100%; height: 100%; object-fit: cover; }
.product-category-info { padding: 20px; background-color: #fff; border-top: 1px solid #f0f0f0; }
.product-category-title { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: #333; }
.product-category-desc { font-size: 14px; color: #666; margin-bottom: 0; line-height: 1.5; }
.product-tag { position: absolute; top: 10px; left: 0; color: #fff; font-size: 14px; padding: 5px 15px; z-index: 2; }
/* 为不同类型的标签设置不同的颜色 */

.tag-domestic { background-color: #0A7A9D; }
.tag-clinical { background-color: #4CAF50; }
.tag-innovation { background-color: #FF9800; }
/* 产品中心页面样式 */

.product-section { padding: 60px 0; background-color: #fff; }
.product-filter { display: flex; justify-content: center; gap: 20px; margin-bottom: 40px; }
.filter-btn { width: 221px; height: 60px; border: none; font-size: 16px; cursor: pointer; transition: all 0.3s ease; display: flex; align-items: center; justify-content: center; background-color: #fff; color: #000; border: 1px solid #e0e0e0; }
.filter-btn.active { background-color: #44afbd; color: #fff; border: none; border-radius: 4px; }
.filter-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1); }
.product-content { margin-top: 40px; }
.load-more { text-align: center; margin-top: 50px; }
/* 响应式适配 */

@media (max-width: 768px) {
.product-filter { flex-direction: column; align-items: center; }
.filter-btn { width: 100%; max-width: 221px; }
}
/* 产品网格布局 */

.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(3, 360px); gap: 4px; }
.product-item { position: relative; overflow: hidden; width: 100%; height: 100%; }
.product-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.product-item:hover img { transform: scale(1.05); }
.product-info { position: absolute; bottom: 0; left: 0; width: 100%; padding: 40px; background: linear-gradient(to top, rgba(24, 76, 105, 0.8), rgba(0, 0, 0, 0)); color: #fff; transition: transform 0.5s ease; }
.product-info .en-name { font-size: 22px; margin: 0 0 5px 0; font-weight: normal; }
.product-info .cn-name { font-size: 26px; margin: 0; font-weight: normal; }
.product-item::before { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; z-index: 1; opacity: 0; transition: opacity 0.3s ease; }
.product-item:hover::before { opacity: 1; }
.product-item a { text-decoration: none; color: inherit; display: block; width: 100%; height: 100%; }
.product-item:hover a { color: inherit; }

/* 响应式适配 */

@media (max-width: 1200px) {
.product-grid { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(5, 480px); }
}

@media (max-width: 768px) {
.product-grid { grid-template-columns: 1fr; grid-template-rows: repeat(9, 480px); }
.product-info .en-name { font-size: 20px; }
.product-info .cn-name { font-size: 26px; }
}
/* VIEW MORE 按钮样式 */

.view-more-container { text-align: center; margin: 60px 0; }
.view-more-btn { display: inline-block; padding: 15px 35px; border: 2px solid #0b779c; color: #0b779c; background: transparent; font-size: 16px; cursor: pointer; transition: all 0.3s ease; border-radius: 4px; }
.view-more-btn:hover { background: #4CAF50; color: #fff; }
/* 新闻轮播部分 */

.nn-slider-section { padding: 60px 0; position: relative; overflow: visible; background: #fff; }
.nn-slider-section .container { position: relative; overflow: visible; }
.nn-slider { position: relative; width: 100%; overflow: visible; padding: 0 60px; }
.nn-slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 50px; height: 50px; border-radius: 50%; background: white; border: none; cursor: pointer; z-index: 2; display: flex; align-items: center; justify-content: center; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); }
.nn-slider-arrow i { color: #40bed0; font-size: 20px; }
.nn-prev { left: 0; }
.nn-next { right: 0; }
.nn-slider-content { display: flex; overflow: hidden; }
.nn-slide { display: flex; width: 100%; gap: 30px; }
.nn-slide-image { flex: 1; height: 400px; }
.nn-slide-image img { width: 100%; height: 100%; object-fit: cover; }
.nn-slide-info { flex: 1; padding: 20px 0; display: flex; flex-direction: column; }
.nn-slide-date { font-size: 18px; color: #333; margin-bottom: 15px; }
.nn-slide-title { font-size: 32px; color: #0b779c; margin-bottom: 20px; line-height: 1.3; }
.nn-slide-desc { font-size: 16px; color: #575757; line-height: 1.6; margin-bottom: 30px; }
.nn-slide-btn { display: inline-block; padding: 12px 30px; border: 2px solid #0b779c; color: #0b779c; font-size: 16px; text-decoration: none; transition: all 0.3s ease; margin: 0 auto; width: fit-content; }
.nn-slide-btn:hover { background: #0b779c; color: white; }
.nn-slider-dots { display: flex; justify-content: center; gap: 10px; margin-top: 30px; }
.nn-dot { width: 10px; height: 10px; border-radius: 50%; background: #ddd; cursor: pointer; transition: all 0.3s ease; }
.nn-dot.active { background: #0b779c; }

@media (max-width: 768px) {
.nn-slide { flex-direction: column; }
.nn-slide-image,  .nn-slide-info { width: 100%; }
.nn-slider-arrow { width: 40px; height: 40px; }
.nn-prev { left: 10px; }
.nn-next { right: 10px; }
.nn-slide-title { font-size: 24px; }
}
/* 新闻列表部分 */

.nn-news-list { padding: 60px 0; background: #fff; }
.nn-news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.nn-news-item { display: flex; flex-direction: column; background: #fff; }
.nn-news-image { width: 100%; height: 240px; overflow: hidden; }
.nn-news-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.nn-news-item:hover .nn-news-image img { transform: scale(1.05); }
.nn-news-info { padding: 20px 0; }
.nn-news-date { font-size: 16px; color: #333; margin-bottom: 10px; }
.nn-news-title { font-size: 24px; color: #0b779c; margin-bottom: 15px; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nn-news-desc { font-size: 16px; color: #575757; line-height: 1.6; margin-bottom: 15px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.nn-news-link { font-size: 16px; color: #0b779c; text-decoration: none; display: inline-block; }
.nn-news-link:hover { text-decoration: underline; }

/* 响应式适配 */

@media (max-width: 1200px) {
.nn-news-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
.nn-news-grid { grid-template-columns: 1fr; }
.nn-news-image { height: 200px; }
}
/* 联系我们页面样式 */

.contact-section { display: flex; height: 760px; width: 100%; }
.contact-map { flex: 1; height: 100%; }
.contact-map img { width: 100%; height: 100%; object-fit: cover; }
.contact-info { flex: 1; padding: 60px; display: flex; flex-direction: column; justify-content: flex-start; background: #f7f7f7; }
.company-title { margin-bottom: 180px; }
.company-title h1 { font-size: 48px; color: #2384a6; margin-bottom: 20px; font-weight: normal; }
.company-title p { font-size: 22px; color: #333; }
.contact-details { display: flex; flex-direction: column; gap: 30px; margin-top: -20px; }
.contact-item { display: flex; align-items: flex-start; gap: 15px; }
.contact-row { max-width: 920px; display: flex; justify-content: space-between; align-items: flex-start; }
.contact-divider { width: 1px; height: 50px; background-color: #e0e0e0; margin: 0 10px; }
.contact-icon { width: 45px; height: 45px; border-radius: 50%; border: 1px solid #e0e0e0; background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-icon i { font-size: 20px; color: #666; }
.contact-text { display: flex; flex-direction: column; gap: 5px; }
.contact-text h3 { font-size: 16px; color: #999; margin: 0; font-weight: normal; }
.contact-text p { font-size: 16px; color: #333; margin: 0; line-height: 1.4; }

@media (max-width: 1200px) {
.contact-section { flex-direction: column; height: auto; }
.contact-map { height: 400px; }
.contact-info { padding: 40px 20px; }
.company-title h1 { font-size: 36px; }
.company-title p { font-size: 18px; }
.contact-row { flex-direction: column; gap: 30px; }
.contact-divider { display: none; }
}
/* 产品特性和应用 */

.product-features { padding: 60px 0; background-color: #f5f5f5; }
.section-title { font-size: 30px; color: #333; margin-bottom: 20px; position: relative; padding-bottom: 15px; }
.section-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 40px; height: 2px; background-color: #0066cc; }
.features-content { display: flex; gap: 40px; margin-top: 40px; }
.features-left { flex: 1; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.feature-item { height: 100%; }
.feature-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 15px; }
.feature-title .cn-title { font-size: 30px; color: #333; margin-bottom: 5px; }
.feature-title .en-title { font-size: 16px; color: #d3d3d3; margin: 0; }
.feature-icon { width: 70px; height: 70px; }
.feature-icon img { width: 100%; height: 100%; object-fit: contain; }
.feature-desc { font-size: 16px; color: #575757; line-height: 2.0; margin: 0; }
.features-right { width: 300px; }
.chemical-structure { border: 1px solid #e0e0e0; }
.chemical-structure img { width: 100%; height: auto; display: block; }
.structure-title { background-color: #4CAF50; padding: 12px 15px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.structure-title h4 { color: #fff; font-size: 18px; margin: 0; }

@media screen and (max-width: 1200px) {
.features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media screen and (max-width: 768px) {
.features-content { flex-direction: column; }
.features-grid { grid-template-columns: 1fr; }
.features-right { width: 100%; }
}
/* 应用领域 */

.application-field { margin: 80px auto; border-top: 1px solid #3a90ae; border-bottom: 1px solid #3a90ae; max-width: 1800px; }
.application-field .container { max-width: 1800px; padding: 0; margin: 0 auto; }
.field-header { margin-top: 50px; background-color: #3a90ae; padding: 30px; display: flex; justify-content: space-between; align-items: center; }
.field-title { color: #fff; }
.field-title .en-title { font-size: 36px; margin: 0 0 5px 0; font-weight: normal; }
.field-title .cn-title { font-size: 24px; margin: 0; font-weight: normal; }
.back-arrow { font-size: 24px; color: #fff; cursor: pointer; }
.field-content { padding: 60px 30px; background-color: #fff; }
.field-items { display: grid; grid-template-columns: repeat(3, 1fr); gap: 60px; }
.field-item { text-align: left; }
.item-title { font-size: 30px; color: #333; margin: 0 0 20px 0; font-weight: normal; }
.item-desc { font-size: 16px; color: #575757; line-height: 2.0; margin: 0; }
/* 双列领域布局 */

.dual-fields { margin: 0 0 80px 0; max-width: 1800px; margin: 0 auto 80px; }
.dual-fields .container { max-width: 1800px; padding: 0; margin: 0 auto; }
.fields-row { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; border-bottom: 1px solid #3a90ae; }
.field-column { border-top: 1px solid #3a90ae; }
.field-column .field-header { margin-top: 0; }
.field-column .field-items { display: block; gap: 0; }
.field-column .field-item { padding: 30px 0; }
.field-column .field-item.with-border { border-top: 1px solid #e0e0e0; }
.field-column .item-title { font-size: 30px; margin-bottom: 15px; }

@media screen and (max-width: 1200px) {
.field-items { grid-template-columns: repeat(2, 1fr); gap: 40px; }
}

@media screen and (max-width: 992px) {
.fields-row { grid-template-columns: 1fr; }
.field-column + .field-column { margin-top: 50px; }
}

@media screen and (max-width: 768px) {
.field-items { grid-template-columns: 1fr; gap: 30px; }
.field-title .en-title { font-size: 28px; }
.field-title .cn-title { font-size: 20px; }
.item-title { font-size: 24px; }
.field-column .item-title { font-size: 24px; }
}
/* 产品参数表格 */

.product-specs { padding: 60px 0; max-width: 1800px; margin: 0 auto; }
.product-specs .container { max-width: 1800px; padding: 0; margin: 0 auto; }
.specs-tables { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.specs-table table { width: 100%; border-collapse: collapse; background-color: #ececec; }
.specs-table th,  .specs-table td { padding: 15px 20px; text-align: left; border: 1px solid #fff; color: #8b8b8b; font-size: 16px; font-weight: normal; }
.specs-table th { background-color: #ececec; color: #3a90ae !important; font-weight: bold; font-size: 18px; }
.specs-table td { background-color: #ececec; }
.specs-table .blue-text { color: #3a90ae; font-weight: bold; font-size: 18px; }

@media screen and (max-width: 992px) {
.specs-tables { grid-template-columns: 1fr; gap: 20px; }
}

@media screen and (max-width: 768px) {
.specs-table th { font-size: 16px; }
.specs-table td { padding: 10px 15px; font-size: 14px; }
.specs-table .blue-text { font-size: 16px; }
}
.nn-slide a { text-decoration: none; color: inherit; display: block; width: 100%; height: 100%; }
.nn-news-item a { text-decoration: none; color: inherit; display: block; width: 100%; height: 100%; }
.nn-slide:hover a,  .nn-news-item:hover a { color: inherit; }
.nn-slider-btn-wrapper { text-align: center; margin-top: 20px; }
.nn-slide-btn { display: inline-block; padding: 12px 30px; border: 2px solid #0b779c; color: #0b779c; font-size: 16px; text-decoration: none; transition: all 0.3s ease; }
.nn-slide-btn:hover { background: #0b779c; color: white; }
.pagination { display: flex; justify-content: center; align-items: center; margin-top: 40px; font-size: 0;  /* 移除按钮之间的间距 */ }
.pagination a { display: inline-flex; justify-content: center; align-items: center; min-width: 40px; height: 40px; padding: 0 15px; background: #fff; border: 1px solid #ddd; color: #333; font-size: 14px; text-decoration: none; margin: 0; border-right: none; }
.pagination a:last-child { border-right: 1px solid #ddd; }
.pagination .page-prev,  .pagination .page-next { padding: 0; width: 40px; }
.pagination .active { background: #0b779c; color: #fff; border-color: #0b779c; }
.pagination a:hover:not(.active) { background: #f5f5f5; }