/* 产品中心页面样式 */

/* === BANNER 区域 === */
.banner {
    position: relative;
    height: 300px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

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

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    z-index: 2;
}

.banner-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--text-white);
}

.banner-title {
    font-size: 28px;
    font-weight: 400;
    line-height: 36px;
    margin-bottom: 16px;
    letter-spacing: 2px;
    text-align: center;
}

.banner-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 16px;
    letter-spacing: 4px;
    text-transform: uppercase;
}

.banner-desc {
    font-size: 20px;
    font-weight: 400;
    line-height: 34px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 24px;
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.banner-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
    font-size: 14px;
}

.banner-breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-normal);
}

.banner-breadcrumb a:hover {
    color: var(--text-white);
}

.separator {
    color: rgba(255, 255, 255, 0.6);
}

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

.banner-btn {
    display: inline-block;
    padding: 14px 28px;
    background: var(--secondary-green);
    color: var(--text-white);
    border-radius: 0;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition-normal);
    text-decoration: none;
}

.banner-btn:hover {
    background: #219a52;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.section-divider {
    width: 100%;
    max-width: 1920px;
    height: 7px;
    background: linear-gradient(90deg, #60B83C 0%, #109AFC 100%);
    border-radius: 0;
    margin: 0 auto;
}

/* === 推荐产品区域 === */
.recommended-products {
    padding: var(--section-padding);
    padding-bottom: 40px;
    background: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    position: relative;
}

.recommended-products .section-title {
    color: #119AF9;
}

.recommended-products .section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 235px;
    height: 2px;
    background: linear-gradient(90deg, #FFEE57 0%, #79AA63 100%), linear-gradient(90deg, #60B83C 0%, #109AFC 100%);
    border-radius: 0px 0px 0px 0px;
}

.products-carousel {
    position: relative;
    margin-bottom: 40px;
}

.carousel-container {
    display: flex;
    gap: 30px;
    justify-content: center;
    overflow: hidden;
    width: 1118px;
    margin: 0 auto;
    position: relative;
}

.product-card {
    flex: 0 0 544px;
    background: var(--bg-white);
    border-radius: 0;
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    transition: var(--transition-normal);
    position: relative;
    display: flex;
    height: 280px;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-large);
}

.product-badge {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
}

.product-badge img {
    max-width: 60px;
    height: auto;
    object-fit: contain;
    display: block;
}

.product-img {
    width: 280px;
    height: 280px;
    object-fit: cover;
    flex-shrink: 0;
}

.product-info {
    width: 264px;
    height: 280px;
    background: linear-gradient(180deg, #119AF9 0%, #DDEDD9 100%);
    border-radius: 0px 0px 0px 0px;
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #FFFFFF;
}

.product-title {
    font-size: 18px;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 10px;
}

.product-desc {
    font-size: 13px;
    color: #FFFFFF;
    line-height: 1.6;
    margin-bottom: 18px;
}

.product-link {
    display: inline-block;
    color: #FFFFFF;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition-normal);
    text-decoration: underline;
}

.product-link:hover {
    color: rgba(255, 255, 255, 0.8);
}

/* 轮播进出动画 */
@keyframes carouselInRight {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes carouselInLeft {
    from { opacity: 0; transform: translateX(-40px); }
    to { opacity: 1; transform: translateX(0); }
}

.products-carousel .product-card.enter-from-right {
    animation: carouselInRight 0.45s ease;
}

.products-carousel .product-card.enter-from-left {
    animation: carouselInLeft 0.45s ease;
}

.carousel-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: calc(100% + 200px);
    display: flex;
    justify-content: space-between;
    padding: 0;
    pointer-events: none;
    left: -100px;
}

.carousel-prev,
.carousel-next {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--primary-blue);
    cursor: pointer;
    transition: var(--transition-normal);
    pointer-events: all;
    box-shadow: var(--shadow-medium);
}

.carousel-prev:hover,
.carousel-next:hover {
    background: var(--primary-blue);
    color: var(--text-white);
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: var(--transition-normal);
    opacity: 0.6;
}

.dot.active,
.dot:hover {
    background: var(--primary-blue);
    opacity: 1;
    transform: scale(1.2);
}

/* === 产品内容区域 === */
.product-content {
    padding: 52px 0;
    padding-top: 36px;
    background: var(--bg-gray);
}

.product-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 20px;
    align-items: start;
}

.product-sidebar {
    background: var(--bg-white);
    border-radius: var(--border-radius);
    padding: 0;
    height: fit-content;
    box-shadow: var(--shadow-small);
    max-height: none;
    overflow: visible;
}

/* 自定义滚动条样式 */
.product-sidebar::-webkit-scrollbar {
    width: 8px;
}

.product-sidebar::-webkit-scrollbar-track {
    background: #F7F7F7;
    border-radius: 4px;
}

.product-sidebar::-webkit-scrollbar-thumb {
    background: #119AF9;
    border-radius: 4px;
}

.product-sidebar::-webkit-scrollbar-thumb:hover {
    background: #0d7ec4;
}

.sidebar-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    padding: 24px;
    border-bottom: 1px solid var(--border-light);
}

.sidebar-menu {
    padding: 12px 0;
    max-height: 640px;
    overflow-y: auto;
}

.sidebar-menu::-webkit-scrollbar {
    width: 8px;
}

.sidebar-menu::-webkit-scrollbar-track {
    background: #F7F7F7;
    border-radius: 4px;
}

.sidebar-menu::-webkit-scrollbar-thumb {
    background: #119AF9;
    border-radius: 4px;
}

.sidebar-menu::-webkit-scrollbar-thumb:hover {
    background: #0d7ec4;
}

.menu-item {
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 14px;
    color: var(--text-primary);
    border-left: 3px solid transparent;
    padding: 12px 24px;
    position: relative;
    padding-right: 36px;
}

.menu-item.sub-item {
    padding-left: 40px;
    font-size: 13px;
    color: var(--text-secondary);
    display: none;
    position: relative;
}

.menu-item.sub-item.sub-divider {
    margin-bottom: 20px;
}

.menu-item.sub-item.sub-divider::after {
    content: '';
    position: relative;
    display: block;
    margin-left: 16px;
    margin-top: 12px;
    left: 0;
    bottom: 0;
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, #60B83C 0%, #109AFC 100%);
    border-radius: 0;
}

.menu-item:not(.sub-item) {
    color: var(--text-primary);
    border-left-color: transparent;
    background: transparent;
    font-weight: 500;
    position: relative;
}

.menu-item:not(.sub-item)::after {
    content: '›';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%) rotate(0deg);
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition-normal);
}

.menu-item:not(.sub-item).expanded::after {
    transform: translateY(-50%) rotate(90deg);
    color: var(--primary-blue);
}

.menu-item:hover,
.menu-item.active {
    background: var(--bg-light);
    color: var(--primary-blue);
    border-left-color: var(--primary-blue);
}

.product-main {
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    padding: 0;
    width: 100%;
}

.product-content-wrapper {
    width: 100%;
    padding: 16px 8px 0 28px;
    box-sizing: border-box;
}

.content-header {
    width: 100%;
    padding: 20px 0 0;
}

.content-title {
    font-size: 20px;
    font-weight: 600;
    color: #119AF9;
    margin-bottom: 16px;
    margin-top: 8px;
    text-align: left;
    width: 100%;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 40px;
    width: 100%;
    box-sizing: border-box;
    justify-items: start;
    padding: 0;
}

.product-grid .product-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 14px;
    transition: var(--transition-normal);
    cursor: pointer;
    background: #ffffff;
    overflow: hidden;
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
    border: 1px solid rgba(17, 154, 249, 0.12);
    width: 100%;
    max-width: 240px;
    min-height: 226px;
    height: auto;
    border-radius: 8px;
}

.product-grid .product-item:hover,
.product-grid .product-item.active {
    border-color: rgba(17, 154, 249, 0.55);
    box-shadow: 0 10px 26px rgba(17, 154, 249, 0.16);
    transform: translateY(-3px);
}

.product-grid .product-item:hover .item-info,
.product-grid .product-item.active .item-info {
    background: transparent;
    border-radius: 0;
    padding: 0;
}

.item-image {
    width: 140px;
    height: 130px;
    overflow: hidden;
    margin-bottom: 12px;
    border-radius: 0;
    flex-shrink: 0;
}

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

.item-info {
    width: 100%;
    padding: 0;
    text-align: center;
    background: transparent;
    transition: all 0.3s ease;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    margin: 0;
}

.product-grid .product-item:hover .item-info,
.product-grid .product-item.active .item-info {
    background: transparent;
    margin: 0;
    padding: 0;
    width: 100%;
}

.item-title {
    font-size: 15px;
    font-weight: 700;
    font-family: 'Microsoft YaHei', sans-serif;
    color: var(--text-primary);
    margin-bottom: 0;
    transition: color 0.3s ease;
    line-height: 1.45;
    width: 100%;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word;
}

.product-grid .product-item:hover .item-title,
.product-grid .product-item.active .item-title {
    color: #119AF9;
}

.item-model {
    font-size: 11px;
    font-weight: 400;
    font-family: 'Microsoft YaHei', sans-serif;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.product-grid .item-model,
.product-grid .item-feature {
    display: none !important;
}

.product-grid .product-item:hover .item-model,
.product-grid .product-item.active .item-model {
    color: #FFFFFF;
}

.item-feature {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    line-height: 1.4;
}

.product-grid .product-item:hover .item-feature,
.product-grid .product-item.active .item-feature {
    color: #FFFFFF;
}

/* === 分页样式 === */
.pagination-wrapper {
    grid-column: 1 / -1;
    width: 100%;
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

.pagination {
    display: flex !important;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 20px 0;
    border-top: 1px solid var(--border-light);
}

.pagination .page-btn {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 12px;
    margin: 0 4px;
    background: var(--bg-white);
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius);
    font-size: 14px;
    text-decoration: none;
    transition: var(--transition-normal);
}

.page-btn:hover {
    background: var(--bg-light);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.page-btn.active {
    background: var(--primary-blue);
    color: var(--text-white);
    border-color: var(--primary-blue);
}

.pagination .page-btn.is-disabled,
.pagination .page-btn[aria-disabled="true"] {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
    background: var(--bg-white);
    color: var(--text-secondary);
    border-color: var(--border-light);
}

.page-btn.special {
    background: var(--primary-blue);
    color: var(--text-white);
    border-color: var(--primary-blue);
    font-weight: 500;
}

/* === 产品筛选 === */
.product-filter {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
    padding: 30px 0;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 60px;
    align-items: center;
}

.filter-tab {
    padding: 12px 0;
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition-normal);
    border-bottom: 2px solid transparent;
    position: relative;
    text-decoration: none;
    white-space: nowrap;
}

.filter-tab:hover {
    color: var(--primary-blue);
}

.filter-tab.active {
    color: var(--primary-blue);
    border-bottom-color: transparent;
}

.filter-tab.active::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 2px;
    background: #109AFC;
    border-radius: 0;
}

/* === 产品详情页面 === */
.product-detail {
    padding: var(--section-padding);
    background: var(--bg-white);
}

.detail-content {
    background: transparent;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
    border: none;
}

.product-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-light);
    background: transparent;
}

.product-nav .nav-prev,
.product-nav .nav-next {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 50%;
    font-size: 18px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
    padding: 0;
}

.product-nav .nav-prev:hover,
.product-nav .nav-next:hover {
    background: var(--primary-blue);
    color: var(--text-white);
}

.product-nav .nav-prev.is-disabled,
.product-nav .nav-next.is-disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

.product-nav .nav-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.product-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    align-items: stretch;
    margin-bottom: 60px;
    background: #FFFFFF;
    border-radius: var(--border-radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    border: none;
    min-height: 420px;
}

.product-images {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 20px;
    padding: 28px;
    background: #FFFFFF;
}

.main-image {
    width: 100%;
    flex: none;
    height: 420px;
    min-height: 420px;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: #FFFFFF;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-img {
    width: 100%;
    height: 100%;
    max-height: 100%;
    object-fit: contain;
    background: #FFFFFF;
}

.image-thumbs {
    display: flex;
    gap: 12px;
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-blue) #f1f1f1;
}

.image-thumbs::-webkit-scrollbar {
    height: 4px;
}

.image-thumbs::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 2px;
}

.image-thumbs::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 2px;
}

.image-thumbs::-webkit-scrollbar-thumb:hover {
    background: var(--primary-blue-dark);
}

.thumb-img {
    width: 80px;
    height: 60px;
    min-width: 80px;
    object-fit: contain;
    border-radius: var(--border-radius);
    border: 2px solid var(--border-light);
    cursor: pointer;
    transition: var(--transition-normal);
}

.thumb-img:hover,
.thumb-img.active {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 2px rgba(17, 154, 249, 0.2);
}

.img-fade-in {
    animation: fadeInMain 0.18s ease;
}

@keyframes fadeInMain {
    from { opacity: 0.15; transform: scale(0.995); }
    to { opacity: 1; transform: scale(1); }
}

.product-info-detail {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: 28px;
    background: #F9F9F9;
    border-radius: 0;
    color: var(--text-primary);
    height: 100%;
    border-left: none;
}

/* 桌面端隐藏顶部详情信息块，仅保留下方详情区域 */
.product-detail-info {
    display: none;
}

@media (min-width: 769px) {
    .product-main {
        min-height: 500px;
    }
    
    .product-images,
    .product-info-detail {
        height: 100%;
        min-height: 500px;
    }
    
    .image-thumbs {
        margin-top: auto;
    }
}

.product-info-detail .product-name {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.product-info-detail .product-model {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.product-features {
    margin-bottom: 32px;
}

.feature-description {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.feature-highlights h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-highlights ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-highlights li {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
    position: relative;
    padding-left: 20px;
}

.feature-highlights li::before {
    content: "•";
    color: var(--primary-blue);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.contact-btn {
    display: inline-block;
    padding: 16px 32px;
    background: var(--primary-blue);
    color: var(--text-white);
    border-radius: var(--border-radius);
    font-size: 18px;
    font-weight: 600;
    transition: var(--transition-normal);
    text-decoration: none;
    align-self: flex-start;
    margin-top: auto;
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* === 应用场景部分 === */
.application-section {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border-light);
}

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

.tab-item {
    padding: 12px 24px;
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition-normal);
    border-bottom: 2px solid transparent;
    cursor: pointer;
    position: relative;
}

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

.tab-item.active::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -8px;
    transform: translateX(-50%);
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #60B83C 0%, #109AFC 100%);
    border-radius: 0;
}

.tab-content {
    margin-top: 40px;
}

.tab-panel {
    display: none;
}

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

.app-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.app-image {
    width: 100%;
}

.app-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.app-info h3 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.app-info p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.app-contact-btn {
    display: inline-block;
    padding: 12px 24px;
    background: var(--primary-blue);
    color: var(--text-white);
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition-normal);
    text-decoration: none;
    margin-top: 20px;
}

.app-contact-btn:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
}

/* === 详情信息部分 === */
.detail-info-section {
    background: white;
    margin-bottom: 40px;
    padding: 0;
}

.detail-info-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 30px;
    text-align: left;
}

.detail-info-content {
    background: #F9F9F9;
    padding: 48px 32px;
    line-height: 1.8;
    min-height: 520px;
    font-family: 'Microsoft YaHei', sans-serif;
    font-weight: 400;
    color: var(--text-primary);
    font-size: 16px;
}

.detail-info-content p {
    margin-bottom: 20px;
    text-align: justify;
}

.detail-info-section .product-nav-links {
    margin-top: 24px;
    padding-top: 360px;
    border-top: none;
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
}

.detail-info-section .nav-link-item {
    display: inline-flex;
    align-items: center;
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 4px 0;
    transition: var(--transition-normal);
}

.detail-info-section .nav-link-item:hover {
    color: var(--primary-blue);
}

.detail-info-section .product-nav-links .nav-link-item:last-child {
    margin-left: auto;
}

/* === 相关产品部分 === */
.related-products {
    background: #F9F9F9;
    border-radius: var(--border-radius-large);
    padding: 40px;
    box-shadow: var(--shadow-medium);
    margin-bottom: 40px;
}

.products-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 30px;
    text-align: left;
}

.products-container {
    background: #F9F9F9;
    padding: 24px 18px;
    border-radius: var(--border-radius);
    margin-bottom: 30px;
}

.products-grid {
    display: flex;
    gap: 6px;
    overflow: hidden;
    position: relative;
    padding: 0 4px;
}

.product-item {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px 15px;
    text-align: left;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    min-width: 260px;
    position: relative;
    box-shadow: var(--shadow-small);
    cursor: pointer;
}

.product-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.product-item.active {
    transform: translateY(-4px);
    box-shadow: var(--shadow-large);
    border: 2px solid #119AF9;
}

.product-item.active .product-name {
    color: #119AF9;
}

.product-item.active .product-code {
    color: #119AF9;
    font-weight: 600;
}

.product-image {
    width: 240px;
    height: 240px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.product-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.product-code {
    font-size: 14px;
    color: #119AF9;
    margin-bottom: 10px;
    font-weight: 500;
}

.product-tags {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.4;
    text-align: center;
    max-width: 180px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-products .product-item {
    align-items: flex-start;
    text-align: left;
}

.related-products .product-image {
    align-self: center;
}

.related-products .product-name {
    font-size: 16px;
    font-weight: 600;
    color: #1F2329;
    margin-bottom: 6px;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: left;
}

.related-products .product-item.active .product-name {
    color: #1F2329;
}

.related-products .product-code {
    font-size: 14px;
    color: #1F2329;
    margin-bottom: 8px;
    font-weight: 500;
    text-align: left;
}

.related-products .product-item.active .product-code {
    color: #1F2329;
}

.related-products .product-tags {
    font-family: 'Microsoft YaHei', '微软雅黑', sans-serif;
    font-weight: 400;
    font-size: 13px;
    color: #B9B9B9;
    line-height: 1.4;
    text-align: left;
    max-width: none;
    display: block;
}

@media (min-width: 769px) {
    .related-products .product-item {
        align-items: flex-start !important;
        text-align: left !important;
    }

    .related-products .product-name,
    .related-products .product-code,
    .related-products .product-tags {
        text-align: left !important;
    }
}

/* 相关产品卡片 - PC */
.related-products .product-item {
    align-items: flex-start;
    text-align: left;
    padding: 14px 16px;
    min-width: 0;
    flex: 0 0 calc(25% - 2px);
}

.related-products .product-image {
    align-self: center;
    width: 240px;
    height: 240px;
}

.related-products .product-name {
    font-size: 16px;
    font-weight: 600;
    color: #1F2329;
    margin-bottom: 6px;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: left;
}

.related-products .product-item.active .product-name {
    color: #1F2329;
}

.related-products .product-code {
    font-size: 14px;
    color: #1F2329;
    margin-bottom: 8px;
    font-weight: 500;
    text-align: left;
}

.related-products .product-item.active .product-code {
    color: #1F2329;
}

.related-products .product-tags {
    font-family: 'Microsoft YaHei', '微软雅黑', sans-serif;
    font-weight: 400;
    font-size: 13px;
    color: #B9B9B9;
    line-height: 1.4;
    text-align: left;
    max-width: none;
    display: block;
}

/* 相关产品卡片定制样式 */
.related-products .product-item {
    align-items: flex-start;
    text-align: left;
}

.related-products .related-products .product-image {
    align-self: center;
}

.related-products .product-name {
    font-size: 16px;
    font-weight: 600;
    color: #1F2329;
    margin-bottom: 6px;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: left;
}

.related-products .product-code {
    font-size: 14px;
    color: #1F2329;
    margin-bottom: 8px;
    font-weight: 500;
    text-align: left;
}

.related-products .product-tags {
    font-family: 'Microsoft YaHei', '微软雅黑', sans-serif;
    font-weight: 400;
    font-size: 13px;
    color: #B9B9B9;
    line-height: 1.4;
    text-align: left;
    max-width: none;
    display: block;
}

.products-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #D1D5DB;
    cursor: pointer;
    transition: var(--transition-normal);
}

.nav-dot.active {
    background: #119AF9;
}

.nav-dot:hover {
    background: #119AF9;
}

.main-image {
    width: 100%;
    flex: none;
    height: 420px;
    min-height: 420px;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--bg-light);
}

.main-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.image-thumbs {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.thumb-img {
    width: 80px;
    height: 60px;
    min-width: 80px;
    object-fit: contain;
    border-radius: var(--border-radius);
    border: 2px solid var(--border-light);
    cursor: pointer;
    transition: var(--transition-normal);
}

.thumb-img:hover,
.thumb-img.active {
    border-color: var(--primary-blue);
}

.product-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-name {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.product-model {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.product-description {
    margin-bottom: 32px;
}

.product-description p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.contact-btn {
    display: inline-block;
    padding: 16px 32px;
    background: var(--primary-gradient);
    color: var(--text-white);
    border-radius: var(--border-radius);
    font-size: 18px;
    font-weight: 600;
    transition: var(--transition-normal);
    text-decoration: none;
    align-self: flex-start;
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* === 详细信息 === */
.detail-info {
    margin-bottom: 60px;
}

.info-title {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.info-content {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.info-content p {
    margin-bottom: 16px;
}

.info-content h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 24px 0 16px 0;
}

.info-content ul {
    padding-left: 20px;
    margin-bottom: 16px;
}

.info-content li {
    margin-bottom: 8px;
    list-style-type: none;
    position: relative;
}

.info-content li::before {
    content: "•";
    color: var(--primary-blue);
    font-weight: bold;
    position: absolute;
    left: -15px;
}

/* === 技术参数导航 === */
.spec-nav {
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}

.spec-nav .nav-item {
    flex: 1;
}

.spec-nav .nav-left,
.spec-nav .nav-right {
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-normal);
}

.spec-nav .nav-left:hover,
.spec-nav .nav-right:hover {
    color: var(--primary-blue);
}

.spec-nav .nav-right {
    text-align: right;
}

/* === 推荐产品 === */
.related-products {
    padding: var(--section-padding);
    background: var(--bg-white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.products-grid .product-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-light);
    transition: var(--transition-normal);
    cursor: pointer;
    background: var(--bg-white);
}

.products-grid .product-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-small);
}

.products-grid .product-img {
    width: 120px;
    height: 90px;
    object-fit: contain;
    margin-bottom: 16px;
}

.products-grid .product-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.products-grid .product-model {
    font-size: 14px;
    color: var(--text-secondary);
}

/* === 响应式设计 === */
@media (max-width: 1024px) {
    .product-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-sidebar {
        order: -1;
    }
    
    .sidebar-menu {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 8px;
        padding: 16px;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .product-main {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .product-images {
        padding: 30px 20px;
        background: #FFFFFF;
    }
    
    .product-info-detail {
        padding: 30px 20px;
        background: #F9F9F9;
        color: var(--text-primary);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filter-tabs {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .filter-tab {
        font-size: 15px;
    }
}

@media (max-width: 768px) {
    .banner {
        height: 300px;
    }
    
    .banner-title {
        font-size: 36px;
    }
    
    .banner-subtitle {
        font-size: 16px;
        letter-spacing: 2px;
    }
    
    .carousel-container {
        flex-direction: column;
        align-items: center;
    }
    
    .product-card {
        flex: none;
        width: 100%;
        max-width: 350px;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 20px;
    }
    
    .filter-tabs {
        gap: 20px;
    }
    
    .filter-tab {
        font-size: 14px;
    }
    
    .detail-content {
        padding: 0;
    }
    
    .product-images {
        padding: 20px 15px;
        background: #FFFFFF;
    }
    
    .main-image {
        height: 320px;
        min-height: 320px;
    }
    
    .product-info-detail {
        padding: 20px 15px;
        background: #F9F9F9;
        color: var(--text-primary);
    }
    
    .product-name {
        font-size: 24px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .spec-nav {
        flex-direction: column;
        gap: 16px;
    }
    
    .spec-nav .nav-right {
        text-align: left;
    }
}

/* === 相关产品卡片 PC 终局样式覆盖 === */
@media (min-width: 769px) {
    .related-products .products-grid {
        gap: 6px;
        padding: 0 4px;
    }

    .related-products .product-item {
        align-items: flex-start !important;
        text-align: left !important;
        padding: 12px !important;
        min-width: 0 !important;
        flex: 0 0 calc(25% - 2px) !important;
    }

    .related-products .product-image {
        width: 220px !important;
        height: 220px !important;
        margin: 0 auto 10px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }

    .related-products .product-img {
        width: 100% !important;
        height: 100% !important;
        object-fit: contain !important;
    }

    .related-products .product-name {
        font-size: 16px !important;
        font-weight: 600 !important;
        color: #1F2329 !important;
        margin-bottom: 6px !important;
        line-height: 1.35 !important;
        white-space: normal !important;
        overflow: hidden !important;
        text-overflow: initial !important;
        display: -webkit-box !important;
        -webkit-line-clamp: 2 !important;
        -webkit-box-orient: vertical !important;
        text-align: left !important;
        min-height: 44px !important;
        width: 100% !important;
    }

    .related-products .product-code {
        font-size: 14px !important;
        color: #1F2329 !important;
        margin-bottom: 8px !important;
        font-weight: 500 !important;
        text-align: left !important;
    }

    .related-products .product-tags {
        font-family: 'Microsoft YaHei', '微软雅黑', sans-serif !important;
        font-weight: 400 !important;
        font-size: 13px !important;
        color: #B9B9B9 !important;
        line-height: 1.4 !important;
        text-align: left !important;
        max-width: none !important;
        display: block !important;
    }
}