/* 上下篇卡片导航 */
.prev-next-section{padding:40px 0 10px;background:var(--light);} 
.detail-nav-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;}
.detail-nav-cards .nav-card{position:relative;display:flex;gap:16px;padding:16px 18px;background:#fff;border:1px solid var(--border-light);border-radius:18px;text-decoration:none;align-items:center;overflow:hidden;box-shadow:0 6px 18px rgba(0,0,0,.06);transition:var(--transition);} 
.detail-nav-cards .nav-card:before{content:"";position:absolute;inset:0;opacity:0;background:linear-gradient(135deg,var(--primary),var(--textile-blue));transition:var(--transition);} 
.detail-nav-cards .nav-card:hover{transform:translateY(-4px);box-shadow:0 12px 26px -6px rgba(0,0,0,.18);} 
.detail-nav-cards .nav-card:hover:before{opacity:.08;} 
.detail-nav-cards .thumb{width:86px;height:70px;border-radius:12px;overflow:hidden;background:var(--accent);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--primary);font-weight:600;letter-spacing:.5px;} 
.detail-nav-cards .thumb img{width:100%;height:100%;object-fit:cover;transition:var(--transition);} 
.detail-nav-cards .nav-card:hover .thumb img{transform:scale(1.06);} 
.detail-nav-cards .meta{position:relative;z-index:2;display:flex;flex-direction:column;gap:6px;} 
.detail-nav-cards .dir{font-size:12px;color:var(--secondary);font-weight:600;letter-spacing:1px;} 
.detail-nav-cards .t{margin:0;font-size:15px;line-height:1.5;color:var(--dark);font-weight:600;} 
.detail-nav-cards .nav-card:hover .t{color:var(--primary);} 
@media (max-width:600px){.detail-nav-cards{grid-template-columns:1fr;} .prev-next-section{padding:30px 0 0;}}
/* 产品详情页样式 */

/* 面包屑导航 */
.breadcrumb-section {
    background: var(--accent);
    padding: 20px 0;
    border-bottom: 1px solid var(--border-light);
}

.breadcrumb {
    font-size: 14px;
    color: var(--text-gray);
}

.breadcrumb a {
    color: var(--text-gray);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--primary);
}

.separator {
    margin: 0 8px;
    opacity: 0.6;
}

.current {
    color: var(--primary);
    font-weight: 500;
}

/* 产品详情主体 */
.product-detail {
    padding: 40px 0;
    background: var(--light);
}

.product-detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

/* 产品图片画廊 */
.product-gallery {
    position: sticky;
    top: 120px;
}

.main-image {
    width: 100%;
    height: 500px;
    background: var(--accent);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    margin-bottom: 20px;
    cursor: zoom-in;
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.image-zoom {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--light);
    border-radius: 12px;
    display: none;
    overflow: hidden;
    z-index: 10;
    cursor: zoom-out;
}

.thumbnail-list {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 5px 0;
}

.thumbnail {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

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

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

/* 产品信息 */
.product-info {
    padding: 20px 0;
}

.product-header {
    margin-bottom: 30px;
}

.product-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 15px;
    line-height: 1.3;
}

.product-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-gray);
}

.meta-item i {
    color: var(--primary);
    font-size: 12px;
}

.badge {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    color: var(--light);
}

.badge.recommended {
    background: var(--secondary);
}

/* 产品简介 */
.product-summary {
    background: var(--accent);
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 30px;
    border-left: 4px solid var(--primary);
}

.product-summary p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-gray);
    margin: 0;
}

/* 产品规格表 */
.product-specifications {
    margin-bottom: 30px;
}

.product-specifications h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 20px;
    position: relative;
}

.product-specifications h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--light);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.spec-table tr {
    border-bottom: 1px solid var(--border-light);
}

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

.spec-table td {
    padding: 15px 20px;
    font-size: 15px;
}

.spec-label {
    background: var(--accent);
    color: var(--dark);
    font-weight: 600;
    width: 30%;
}

.spec-value {
    color: var(--text-gray);
}

/* 联系咨询区域 */
.product-contact {
    background: var(--cream);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-light);
}

.contact-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.btn-large {
    padding: 15px 25px;
    font-size: 16px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-gray);
}

.contact-item i {
    color: var(--primary);
    width: 18px;
    font-size: 16px;
}

/* 标签页区域 */
.product-tabs {
    padding: 60px 0;
    background: var(--accent);
}

.tabs-navigation {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    border-bottom: 1px solid var(--border-light);
}

.tab-btn {
    background: none;
    border: none;
    padding: 15px 30px;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-gray);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    border-bottom: 3px solid transparent;
}

.tab-btn.active,
.tab-btn:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tabs-content {
    min-height: 400px;
}

.tab-panel {
    display: none;
    animation: fadeInUp 0.5s ease;
}

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

.content-wrapper {
    background: var(--light);
    border-radius: 12px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.content-wrapper h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 25px;
}

.content-wrapper h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark);
    margin: 25px 0 15px;
}

.content-wrapper p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-gray);
    margin-bottom: 20px;
}

.content-wrapper ul,
.content-wrapper ol {
    margin: 15px 0 20px 20px;
}

.content-wrapper li {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-gray);
    margin-bottom: 8px;
}

/* 技术参数网格 */
.spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.spec-card {
    background: var(--accent);
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid var(--primary);
}

.spec-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 15px;
}

.spec-card ul {
    list-style: none;
    margin: 0;
}

.spec-card li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 14px;
    display: flex;
    justify-content: space-between;
}

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

/* 应用案例网格 */
.application-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.application-card {
    background: var(--light);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.application-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.app-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--accent);
}

.app-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.application-card:hover .app-image img {
    transform: scale(1.1);
}

.app-content {
    padding: 20px;
}

.app-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 10px;
}

.app-content p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
    margin: 0;
}

/* 质量保证内容 */
.quality-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: start;
}

.quality-text h4 {
    color: var(--primary);
    margin-bottom: 10px;
}

.quality-certifications h4 {
    text-align: center;
    margin-bottom: 20px;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 20px;
}

.cert-item {
    text-align: center;
    background: var(--accent);
    padding: 15px;
    border-radius: 8px;
    transition: var(--transition);
}

.cert-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.cert-item img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    margin-bottom: 10px;
}

.cert-item span {
    font-size: 12px;
    color: var(--text-gray);
    font-weight: 500;
}

/* 相关产品推荐 */
.related-products {
    padding: 60px 0;
    background: var(--light);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.related-card {
    background: var(--light);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.related-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.related-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--accent);
    position: relative;
}

.related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.related-card:hover .related-image img {
    transform: scale(1.1);
}

.related-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(43, 87, 151, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.related-content {
    padding: 20px;
}

.related-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 10px;
}

.related-content p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 15px;
}

.related-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
}

.price {
    color: var(--primary);
    font-weight: 600;
}

.views {
    color: var(--text-gray);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* 模态框样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: none;
}

.modal.show {
    display: block;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--light);
    border-radius: 12px;
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 90%;
    overflow-y: auto;
    animation: slideInDown 0.3s ease;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-gray);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--primary);
}

.modal h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 25px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-light);
    border-radius: 6px;
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(43, 87, 151, 0.1);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .product-detail-layout {
        gap: 40px;
    }
    
    .main-image {
        height: 400px;
    }
    
    .quality-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .product-detail-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .product-gallery {
        position: static;
    }
    
    .main-image {
        height: 300px;
    }
    
    .product-title {
        font-size: 24px;
    }
    
    .contact-buttons {
        flex-direction: column;
    }
    
    .tabs-navigation {
        flex-wrap: wrap;
        justify-content: flex-start;
    }
    
    .tab-btn {
        padding: 12px 20px;
        font-size: 14px;
    }
    
    .content-wrapper {
        padding: 25px;
    }
    
    .spec-grid,
    .application-grid {
        grid-template-columns: 1fr;
    }
    
    .related-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 480px) {
    .product-detail {
        padding: 20px 0;
    }
    
    .main-image {
        height: 250px;
    }
    
    .product-title {
        font-size: 20px;
    }
    
    .product-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .product-contact {
        padding: 20px;
    }
    
    .content-wrapper {
        padding: 20px;
    }
    
    .modal-content {
        padding: 20px;
        width: 95%;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translate(-50%, -60%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}