/* 面包屑导航 */
.breadcrumb-section {
    background-color: #f5f7fa;
    padding: 12px 0;
    border-bottom: 1px solid #e1e4e8;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #666;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: #0066cc;
}

.breadcrumb a.active {
    color: #0066cc;
    font-weight: 500;
}

.breadcrumb span {
    color: #999;
    font-size: 12px;
}

/* 产品详情主区域 */
.product-detail {
    padding: 30px 0;
    background-color: #fff;
}

/* 产品头部（图片+信息） */
.product-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e1e4e8;
}

/* 产品图片画廊 */
.product-gallery {
    width: 100%;
}

.main-image {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    margin-bottom: 15px;
    border: 1px solid #e1e4e8;
}

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

.main-image:hover img {
    transform: scale(1.02);
}

.zoom-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.8);
    color: #0066cc;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.zoom-btn:hover {
    background-color: #0066cc;
    color: #fff;
}

/* 缩略图区域 */
.thumbnails {
    display: flex;
    align-items: center;
    gap: 10px;
    overflow: hidden;
}

.thumb-prev, .thumb-next {
    width: 30px;
    height: 60px;
    border: 1px solid #e1e4e8;
    background-color: #f5f7fa;
    color: #666;
    border-radius: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.thumb-prev:hover, .thumb-next:hover {
    background-color: #0066cc;
    color: #fff;
    border-color: #0066cc;
}

.thumb-list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: 5px 0;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.thumb-list::-webkit-scrollbar {
    display: none;
}

.thumb-item {
    width: 80px;
    height: 60px;
    border: 2px solid transparent;
    cursor: pointer;
    overflow: hidden;
    flex-shrink: 0;
}

.thumb-item.active {
    border-color: #0066cc;
}

.thumb-item:hover {
    border-color: #0066cc;
    opacity: 0.9;
}

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

/* 产品信息区域 */
.product-info h1 {
    font-size: 32px;
    font-weight: 700;
    color: #001737;
    margin-bottom: 15px;
    line-height: 1.2;
}

.product-short-desc {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e1e4e8;
}

/* 产品卖点 */
.product-benefits {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 30px;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.benefit-item i {
    color: #0066cc;
    font-size: 20px;
    margin-top: 2px;
}

.benefit-item h4 {
    font-size: 14px;
    font-weight: 600;
    color: #001737;
    margin-bottom: 3px;
}

.benefit-item p {
    font-size: 12px;
    color: #666;
    margin: 0;
}

/* 产品参数 */
.product-specs {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #f5f7fa;
    border-radius: 4px;
}

.spec-item {
    display: flex;
    margin-bottom: 10px;
    font-size: 14px;
}

.spec-item:last-child {
    margin-bottom: 0;
}

.spec-label {
    font-weight: 600;
    color: #001737;
    min-width: 120px;
}

.spec-value {
    color: #666;
}

/* 产品操作按钮 */
.product-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.quote-btn {
    background-color: #0066cc;
    color: #fff;
    padding: 12px 25px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.3s ease;
}

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

.download-btn {
    background-color: #fff;
    color: #0066cc;
    border: 1px solid #0066cc;
    padding: 12px 25px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background-color: #f0f7ff;
}

/* 产品标签页 */
.product-tabs {
    margin-bottom: 40px;
}

/* 标签导航 */
.tab-nav {
    display: flex;
    border-bottom: 2px solid #e1e4e8;
    margin-bottom: 20px;
    overflow-x: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    background: none;
    border: none;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    color: #666;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.tab-btn.active {
    color: #0066cc;
    border-bottom: 2px solid #0066cc;
}

.tab-btn:hover:not(.active) {
    color: #0066cc;
    border-bottom: 2px solid #e1e4e8;
}

/* 标签内容 */
.tab-content {
    min-height: 300px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 描述标签内容 */
.description-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.desc-text {
    font-size: 15px;
    line-height: 1.7;
    color: #666;
}

.desc-text p {
    margin-bottom: 15px;
}

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

.desc-image {
    width: 100%;
    height: auto;
    overflow: hidden;
}

.desc-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 规格标签内容 */
.spec-table-wrapper {
    overflow-x: auto;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.spec-table th {
    background-color: #f5f7fa;
    padding: 12px 15px;
    text-align: left;
    font-weight: 600;
    color: #001737;
    border: 1px solid #e1e4e8;
    white-space: nowrap;
}

.spec-table td {
    padding: 12px 15px;
    color: #666;
    border: 1px solid #e1e4e8;
}

.spec-table tr:nth-child(even) {
    background-color: #f9fafc;
}

.spec-note {
    font-size: 13px;
    color: #666;
    margin-top: 15px;
    font-style: italic;
}

/* 应用标签内容 */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.app-card {
    position: relative;
    height: 200px;
    overflow: hidden;
    cursor: pointer;
}

.app-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.app-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 23, 55, 0.8);
    color: #fff;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.app-card-overlay i {
    font-size: 24px;
}

.app-card-overlay h4 {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
}

/* 优势标签内容 */
.advantages-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.advantage-item {
    display: flex;
    gap: 15px;
    padding: 15px;
    background-color: #f5f7fa;
    border-radius: 4px;
}

.advantage-item i {
    color: #0066cc;
    font-size: 24px;
    margin-top: 3px;
    flex-shrink: 0;
}

.advantage-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: #001737;
    margin-bottom: 8px;
}

.advantage-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* 下载标签内容 */
.download-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.download-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background-color: #f5f7fa;
    border-radius: 4px;
}

.download-item i {
    color: #0066cc;
    font-size: 32px;
    flex-shrink: 0;
}

.download-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: #001737;
    margin-bottom: 5px;
}

.download-item p {
    font-size: 13px;
    color: #666;
    margin: 0;
}

.download-link {
    margin-left: auto;
    color: #0066cc;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: color 0.3s ease;
}

.download-link:hover {
    color: #0052a3;
}

/* FAQ标签内容 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 10px;
    border: 1px solid #e1e4e8;
    border-radius: 4px;
}

.faq-question {
    width: 100%;
    padding: 15px 20px;
    background-color: #f5f7fa;
    color: #001737;
    font-size: 15px;
    font-weight: 600;
    text-align: left;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: #e9edf2;
}

.faq-question i {
    color: #0066cc;
    transition: transform 0.3s ease;
}

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

.faq-answer.show {
    padding: 15px 20px 20px;
    max-height: 500px;
}

.faq-answer p {
    font-size: 14px;
    line-height: 1.7;
    color: #666;
}

/* 相关产品 */
.related-products {
    margin-bottom: 40px;
    padding-top: 30px;
    border-top: 1px solid #e1e4e8;
}

.related-products h2 {
    font-size: 22px;
    font-weight: 700;
    color: #001737;
    margin-bottom: 25px;
    text-transform: uppercase;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.related-card {
    border: 1px solid #e1e4e8;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.related-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.related-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    margin-bottom: 15px;
}

.related-card h3 {
    font-size: 15px;
    font-weight: 600;
    color: #001737;
    padding: 0 15px;
    margin-bottom: 15px;
}

.view-link {
    display: inline-block;
    color: #0066cc;
    font-size: 13px;
    font-weight: 500;
    padding: 0 15px 15px;
    transition: color 0.3s ease;
}

.view-link:hover {
    color: #0052a3;
}

.view-link i {
    font-size: 10px;
    margin-left: 5px;
}

.view-all-link {
    display: inline-block;
    color: #0066cc;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    width: fit-content;
    transition: color 0.3s ease;
}

.view-all-link:hover {
    color: #0052a3;
}

/* 公司优势 */
.company-benefits {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    padding: 30px 0;
    background-color: #f5f7fa;
    border-radius: 4px;
}

.benefit-card {
    text-align: center;
    padding: 15px;
}

.benefit-card i {
    color: #0066cc;
    font-size: 28px;
    margin-bottom: 15px;
}

.benefit-card h4 {
    font-size: 14px;
    font-weight: 600;
    color: #001737;
    line-height: 1.4;
}

/* 图片放大模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.show {
    display: flex;
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: #0066cc;
}

#modalImage {
    max-width: 100%;
    max-height: 90vh;
}

/* 响应式适配 */
@media (max-width: 1200px) {
    .product-header {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .description-content {
        grid-template-columns: 1fr;
    }
    
    .product-benefits {
        grid-template-columns: 1fr;
    }
    
    .advantages-list, .download-list {
        grid-template-columns: 1fr;
    }
    
    .company-benefits {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .company-benefits {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .related-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .product-detail {
        padding: 20px 0;
    }
    
    .product-header {
        margin-bottom: 30px;
    }
    
    .main-image {
        height: 300px;
    }
    
    .product-info h1 {
        font-size: 26px;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .quote-btn, .download-btn {
        width: 100%;
        justify-content: center;
    }
    
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .company-benefits {
        grid-template-columns: 1fr;
    }
    
    .tab-btn {
        padding: 10px 15px;
        font-size: 13px;
    }
}

@media (max-width: 576px) {
    .main-image {
        height: 250px;
    }
    
    .product-info h1 {
        font-size: 22px;
    }
    
    .product-short-desc {
        font-size: 14px;
    }
    
    .spec-item {
        flex-direction: column;
        gap: 5px;
    }
    
    .spec-label {
        min-width: auto;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-close {
        top: -30px;
        font-size: 20px;
    }
}