/**
 * Kejie Phone Case - 产品分类与单品详情页样式
 */

/* 1. 页面左右分栏整体布局结构 */
.product-page-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    padding-top: 36px;
    padding-bottom: 70px;
}

/* 2. 产品页面左侧边栏（Sidebar） */
.product-sidebar {
    display: flex;
    flex-direction: column;
    gap: 36px;
}

.sidebar-widget {
    background: #ffffff;
}

.widget-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-heading);
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}

.sidebar-category-list li {
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: 2px;
}

.sidebar-category-list li:last-child {
    border-bottom: none;
}

.sidebar-category-list li a {
    display: block;
    padding: 10px 14px;
    font-size: 0.875rem;
    color: var(--color-text-main);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.sidebar-category-list li.active a {
    color: var(--color-primary);
    font-weight: 600;
    background-color: var(--color-primary-light, #e6f9f7);
}

.sidebar-category-list li a:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-light, #e6f9f7);
}

/* 多层级产品分类树手风琴样式 (Product Category Tree - 1:1 对齐 kejiephonecase_deleted_soon) */
.product-category-tree {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.cat-tree-item {
    border-bottom: 1px solid var(--color-border-light, #edf2f7);
    list-style: none;
}

.cat-tree-item:last-child {
    border-bottom: none;
}

.cat-tree-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 4px;
    transition: color var(--transition-fast);
}

.cat-tree-link {
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text-main);
    flex-grow: 1;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.cat-tree-header:hover .cat-tree-link,
.cat-tree-header.is-active .cat-tree-link {
    color: var(--color-primary);
}

.cat-tree-toggle {
    color: var(--color-text-muted);
    padding: 4px;
    cursor: pointer;
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.cat-tree-toggle svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    transition: transform var(--transition-fast);
}

.cat-tree-toggle:hover {
    color: var(--color-primary);
}

.cat-tree-item.is-open > .cat-tree-header .cat-tree-toggle {
    transform: rotate(180deg);
}

/* 二级分类 (Level 2) */
.cat-tree-sub {
    padding: 4px 0 10px 14px;
    border-left: 2px solid var(--color-primary-light, #e6f9f7);
    margin-left: 6px;
    margin-bottom: 6px;
    list-style: none;
}

.cat-tree-sub-item {
    padding: 2px 0;
    list-style: none;
}

.cat-sub-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 4px;
}

.cat-sub-link {
    font-size: 0.875rem;
    color: var(--color-text-muted, #4b5563);
    font-weight: 500;
    flex-grow: 1;
    text-decoration: none;
    transition: color var(--transition-fast);
}
.cat-sub-header.is-active{
    background-color: var(--color-primary-light, #e6f9f7);
}
.cat-sub-header:hover .cat-sub-link,
.cat-sub-header.is-active .cat-sub-link {
    color: var(--color-primary);
    font-weight: 600;
}

.cat-sub-toggle {
    color: var(--color-text-muted);
    padding: 2px 4px;
    cursor: pointer;
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.cat-sub-toggle svg {
    width: 12px;
    height: 12px;
    stroke: currentColor;
    transition: transform var(--transition-fast);
}

.cat-sub-toggle:hover {
    color: var(--color-primary);
}

.cat-tree-sub-item.is-open > .cat-sub-header .cat-sub-toggle {
    transform: rotate(180deg);
}

/* 三级分类 (Level 3) */
.cat-tree-grand {
    padding: 2px 0 6px 14px;
    border-left: 1.5px dashed var(--color-border, #e2e8f0);
    margin-left: 6px;
    margin-bottom: 4px;
    list-style: none;
}

.cat-tree-grand-item {
    padding: 4px 0;
    list-style: none;
}

.cat-grand-link {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    display: block;
    padding: 2px 0;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.cat-grand-link:hover,
.cat-tree-grand-item.is-active .cat-grand-link {
    color: var(--color-primary);
    font-weight: 600;
}

/* 侧边栏“需要帮助”询盘挂件（Help Inquiry Widget） */
.help-inquiry-widget {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background-size: cover;
    background-position: center;
    color: #ffffff;
    box-shadow: var(--shadow-md);
}

.help-inquiry-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 36, 43, 0.32);
    backdrop-filter: blur(4px);
}

.help-inquiry-content {
    position: relative;
    z-index: 2;
    padding: 24px 20px;
}

.help-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
}

.help-desc {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 18px;
    line-height: 1.5;
}

.sidebar-inquiry-form .form-label {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.75rem;
}

.sidebar-inquiry-form .form-control {
    background: rgba(255, 255, 255, 0.95);
    border: none;
    padding: 8px 12px;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
}

/* 侧边栏热销产品推荐挂件（HOT PRODUCT Widget） */
.hot-product-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hot-product-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--color-border-light);
}

.hot-product-thumb {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    background: #f8fafc;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hot-product-thumb img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
}

.hot-product-info {
    flex: 1;
}

.hot-product-text {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
    line-height: 1.4;
}

.hot-product-more {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* 3. 产品分类右侧主体内容区 */
.category-main-content {
    min-width: 0;
}

.category-header-title {
    font-size: 1.875rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.kejie-collapsible-text {
    max-height: 75px;
    overflow: hidden;
    position: relative;
    transition: max-height 0.4s ease;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.kejie-collapsible-text.expanded {
    max-height: 100%;
}

.kejie-view-all-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 700;
    background-color: var(--color-primary-light, #e6f9f7);
    padding: 6px 18px;
    border-radius: 20px;
    margin-top: 12px;
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    cursor: pointer;
    text-decoration: none;
    border: 1px solid rgba(0, 196, 180, 0.15);
    transition: all var(--transition-fast);
}

.kejie-view-all-toggle:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}

/* 分页组件样式（Pagination - 1:1 对齐设计稿规范） */
.kejie-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 36px 0 50px;
    width: 100%;
}

.kejie-pagination ul.page-numbers {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 0;
}
.kejie-pagination ul.page-numbers li {
    border: 1px solid #fca5a5;
    border-radius: 4px;
}
.kejie-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    background-color: #ffffff;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.kejie-pagination .page-numbers.prev,
.kejie-pagination .page-numbers.next {
    color: var(--color-primary);
    border-color: #fca5a5;
    padding: 0 16px;
}

.kejie-pagination .page-numbers.current,
.kejie-pagination a.page-numbers:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #ffffff;
}

/* 常见问题解答手风琴（FAQ Accordion） */
.category-faq-section {
    margin: 48px 0;
}

.kejie-accordion {
    display: flex;
    flex-direction: column;
    gap: 16px; /* 每个问答上下之间有间隔，对齐设计稿 */
    border: none;
    background: transparent;
}

.kejie-accordion-item {
    background: #ffffff;
    border: 1px solid #ccfbf1;
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.kejie-accordion-item:hover,
.kejie-accordion-item.active {
    border-color: var(--color-primary);
}

.kejie-accordion-header {
    padding: 16px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-heading);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #ffffff;
    user-select: none;
    transition: color var(--transition-fast);
}

.kejie-accordion-item.active .kejie-accordion-header {
    color: var(--color-text-heading);
    background: #ffffff;
}

/* 实心三角上下拉箭头 */
.kejie-accordion-arrow {
    display: inline-block;
    color: var(--color-primary);
    font-size: 0.6875rem;
    line-height: 1;
    transition: transform 0.25s ease;
}

.kejie-accordion-item.active .kejie-accordion-arrow {
    transform: rotate(180deg);
}

.kejie-accordion-body {
    display: none;
    padding: 0 20px 20px;
    background: #ffffff;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    border-top: none;
}

.kejie-accordion-body p {
    margin: 0;
}

/* 视频教程卡片列表（Video Tutorial Cards） */
.video-tutorial-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0 50px;
}

.video-card-item {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 16 / 9;
    box-shadow: var(--shadow-sm);
}

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

.video-card-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 0 6px rgba(0, 196, 180, 0.3);
    transition: transform var(--transition-base);
}

.video-card-play:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

/* 关联博客行业资讯网格（Related Articles Grid - 1:1 对齐设计稿与 single.php） */
.related-articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.article-mini-card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.article-mini-card:hover {
    border-color: #cbd5e1;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.07);
    transform: translateY(-3px);
}

.article-mini-thumb {
    width: 100%;
    height: 220px;
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow: hidden;
    border-bottom: 1px solid #f1f5f9;
}

.article-mini-thumb img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.article-mini-card:hover .article-mini-thumb img {
    transform: scale(1.06);
}

.article-mini-body {
    padding: 16px 18px 18px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.article-mini-title {
    font-size: 1rem;
    font-weight: 700;
    color: #111827;
    line-height: 1.4;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 2.8em;
}

.article-mini-title a {
    display: block;
    color: #111827;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.article-mini-title a:hover {
    color: var(--color-primary);
}

.article-mini-desc {
    font-size: 0.8125rem;
    color: #6b7280;
    line-height: 1.35rem;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-mini-footer {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid #f8fafc;
}

.article-mini-date {
    font-size: 0.75rem;
    color: #9ca3af;
    font-weight: 500;
}

.article-mini-more {
    background: var(--color-primary-light, #e6f9f7);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.article-mini-more:hover {
    background: var(--color-primary);
    color: #ffffff;
    transform: translateX(2px);
}

/* ==========================================================================
   产品分类归档页面整体双栏布局（浅灰底色包装层与左右白底独立大板块）
   ========================================================================== */
.product-archive-page-wrap {
    background-color: #f4f6f8; /* 页面整体浅灰背景，对齐设计稿 */
    padding: 30px 0 60px;
}

.product-archive-page-wrap .product-page-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
    align-items: start;
    padding-top: 0;
    padding-bottom: 0;
}

/* 大板块一：左侧边栏各个挂件白底卡片 */
.product-archive-page-wrap .product-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.product-archive-page-wrap .sidebar-widget {
    background: #ffffff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

.product-archive-page-wrap .help-inquiry-widget {
    padding: 0;
    overflow: hidden;
}

/* 大板块二：右侧主体内容卡片（白底、圆角、内边距） */
.product-archive-page-wrap .category-main-content {
    background: #ffffff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 36px 36px 48px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
    min-width: 0;
}

/* 4. 单品详情页面专用样式（Single Product Details Page - 严格对齐设计稿规范） */

/* 详情页浅灰底色全屏包装层（实现页面底色浅灰，三大板块为白底卡片） */
.single-product-page-wrap {
    background-color: #f4f6f8; /* 页面整体浅灰背景 */
    padding: 60px 0 60px;
}

/* 板块一：首屏上部产品详情与画廊卡片（白底、圆角、阴影、内边距） */
.product-single-top {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    background: #ffffff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 36px 40px;
    margin-bottom: 24px; /* 与下部双栏保持清晰间距 */
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

.product-gallery-main-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background: #f8fafc;
    border-radius: var(--radius-md);
    border: 1px solid #edf2f7;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-bottom: 16px;
    cursor: zoom-in; /* 提示可点击全屏放大预览 */
}

/* 图片放大提示按钮（Zoom Trigger） */
.gallery-zoom-trigger {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--color-border);
    color: #64748b;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-fast);
    z-index: 6;
}

.gallery-zoom-trigger:hover {
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    transform: scale(1.08);
}

.product-gallery-main-img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
    transition: opacity 0.25s ease, transform 0.3s ease;
}

/* 画廊轮播左右切换圆形箭头按钮（对齐设计稿淡粉红/纯白底色与悬停品牌红） */
.gallery-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: #ffffff;
    border: 1px solid var(--color-border);
    color: #64748b;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    font-size: 1.35rem;
    line-height: 1;
    transition: all 0.2s ease;
    z-index: 5;
    user-select: none;
}

.gallery-nav-btn.prev {
    left: 14px;
}

.gallery-nav-btn.next {
    right: 14px;
}

.gallery-nav-btn:hover {
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    transform: translateY(-50%) scale(1.08);
    box-shadow: 0 4px 10px rgba(0, 196, 180, 0.35);
}

.product-thumbs-strip {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.product-thumb-btn {
    width: 62px;
    height: 62px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #ffffff;
    padding: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.product-thumb-btn.active,
.product-thumb-btn:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

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

.product-summary-col {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.product-single-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-text-heading);
    margin-bottom: 16px;
    line-height: 1.35;
}

.product-single-excerpt {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    margin-bottom: 128px;
}

/* 首屏右侧“立即询盘”红色胶囊按钮 */
.btn-inquiry-now {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 34px;
    border-radius: 50px;
    background: var(--color-primary);
    color: #ffffff;
    font-weight: 700;
    font-size: 0.9375rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
    transition: all var(--transition-fast);
    box-shadow: 0 3px 10px rgba(0, 196, 180, 0.25);
}

.btn-inquiry-now:hover {
    background: var(--color-primary-hover);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 196, 180, 0.4);
}

/* 下部双栏布局（两列各自为独立白底卡片） */
.single-product-page-wrap .product-page-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
    align-items: start;
    padding-top: 0;
    padding-bottom: 0;
}

/* 板块二：左侧产品分类独立白底卡片 */
.single-product-page-wrap .product-sidebar {
    background: #ffffff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

/* 板块三：右侧主体详情独立白底卡片 */
.single-product-page-wrap .product-details-content {
    background: #ffffff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 36px 36px 48px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
    min-width: 0;
}

/* 顶部锚点 Tab 切换胶囊栏（支持滚轮下滑吸顶固定与滚动跟踪效果） */
.product-tabs-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 28px;
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 850;
    background: #ffffff;
    padding: 14px 0;
    transition: all 0.25s ease;
}

.product-tabs-bar.is-fixed {
    padding: 14px 20px;
    margin-left: -20px;
    margin-right: -20px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.product-tab-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 24px;
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    text-decoration: none;
    border: 1px solid var(--color-border);
    color: #64748b;
    background: #ffffff;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.product-tab-pill.active,
.product-tab-pill:hover {
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
}

/* 正文内容区域输出（后台编辑器直接渲染排版） */
.product-editor-content {
    font-size: 0.9375rem;
    color: var(--color-text-main);
    line-height: 1.7;
    margin-bottom: 40px;
}

.product-editor-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin: 16px 0;
}

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

/* 各子小节红色大写小标题 */
.single-sub-title {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 18px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-bottom: 1px solid var(--color-border-light);
    padding-bottom: 10px;
}

/* B2B 规格参数表格（Specifications Table） */
.single-specifications-section {
    margin-bottom: 40px;
}

.specs-table-wrap {
    margin: 16px 0 20px;
    overflow-x: auto;
}

.specs-content-wrap {
    overflow-x: auto;
    line-height: 1.7;
    color: var(--color-text-main);
}

.specs-content-wrap table,
.kejie-specs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    margin: 16px 0;
}

.specs-content-wrap th,
.specs-content-wrap td,
.kejie-specs-table th,
.kejie-specs-table td {
    padding: 12px 18px;
    border: 1px solid var(--color-border);
}

.specs-content-wrap th,
.kejie-specs-table th {
    background-color: #f8fafc;
    color: var(--color-text-heading);
    font-weight: 600;
}

.specs-content-wrap td,
.kejie-specs-table td {
    color: var(--color-text-main);
}

.specs-note-text {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-top: 12px;
}

/* INQUIRY NOW 表单卡片区域 */
.single-inquiry-box {
    margin: 36px 0 44px;
}

.single-inquiry-box .form-row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.btn-inquiry-submit {
    min-width: 180px;
    padding: 12px 38px;
    border-radius: 24px;
    background: var(--color-primary);
    color: #ffffff;
    font-weight: 700;
    font-size: 0.9375rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-inquiry-submit:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 196, 180, 0.35);
}

/* 5. 底部相关产品推荐网格与轮播卡片（1:1 对齐首页 RECOMMENDED PRODUCTS 样式） */
.related-products-carousel-section {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border-light);
    position: relative;
}

.products-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* 4 列产品网格（用于产品分类归档列表页，严格对齐设计稿 4 列布局） */
.products-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 1200px) {
    .products-grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 860px) {
    .products-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 520px) {
    .products-grid-4 {
        grid-template-columns: 1fr;
    }
}

/* 通用产品网格卡片样式（严格对齐设计稿规范） */
.product-grid-card {
    background: #ffffff;
    border: 1px solid var(--color-border-light); /* 默认常规淡灰边框，无红框 */
    border-radius: var(--radius-md);
    padding: 22px 18px 18px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: all var(--transition-fast);
}

/* 鼠标悬停卡片时：显示品牌红边框与阴影升起动效 */
.product-grid-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-hover);
    transform: translateY(0px);
}

.product-card-thumb-wrap {
    width: 100%;
    aspect-ratio: 1 / 1;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-color: #ffffff;
}

.product-card-thumb-wrap img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    transition: transform var(--transition-base);
}

.product-grid-card:hover .product-card-thumb-wrap img {
    transform: scale(1.05);
}

.product-card-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--color-text-heading);
    margin-bottom: 10px;
    line-height: 1.4;
    min-height: 2.8em;
}

.product-card-title a {
    color: var(--color-text-heading);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.product-card-title a:hover {
    color: var(--color-primary);
}

/* 简要描述与“VIEW DETAIL”按钮切换容器（默认显示简要描述，悬停隐藏描述并显示按钮） */
.product-card-swap-wrap {
    position: relative;
    margin-top: auto;
    min-height: 42px;
    display: flex;
    align-items: center;
}

/* 默认状态：简要描述正常显示（最多两行省略），按钮隐藏不可见 */
.product-card-swap-wrap .product-card-desc {
    margin: 0;
    font-size: 0.8125rem;
    color: var(--color-text-light);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: all 0.25s ease;
}

.product-card-swap-wrap .product-card-action {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: all 0.25s ease;
    pointer-events: none;
}

.product-card-swap-wrap .btn-view-detail {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 10px 16px;
    font-size: 0.875rem;
    font-weight: 700;
    color: #ffffff;
    background-color: var(--color-primary);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    text-decoration: none;
    letter-spacing: 0.04em;
    transition: background-color var(--transition-fast);
}

.product-card-swap-wrap .btn-view-detail:hover {
    background-color: var(--color-primary-hover);
}

/* 鼠标悬停卡片时：隐藏简要描述，显露 VIEW DETAIL 红色按钮 */
.product-grid-card:hover .product-card-swap-wrap .product-card-desc {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
}

.product-grid-card:hover .product-card-swap-wrap .product-card-action {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

/* 轮播幻灯片容器与切换动画 */
.related-carousel-container {
    position: relative;
    overflow: hidden;
}

.related-slide {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.related-slide.active {
    display: block;
    opacity: 1;
}

/* 底部轮播小圆点/指示条 */
.related-carousel-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
}

.related-dot {
    width: 24px;
    height: 5px;
    border-radius: 3px;
    background: #cbd5e1;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.related-dot.active {
    background: var(--color-primary);
    width: 32px;
}

/* 产品模块移动端响应式适配 */
@media (max-width: 991px) {
    /* 产品分类列表页响应式：右侧主体板块在上面（order: 1），左侧边栏在下面（order: 2） */
    .product-archive-page-wrap .product-page-layout {
        display: flex;
        flex-direction: column;
        gap: 28px;
    }

    .product-archive-page-wrap .category-main-content {
        order: 1;
        width: 100%;
    }

    .product-archive-page-wrap .product-sidebar {
        order: 2;
        width: 100%;
    }

    /* 单品详情页响应式：右侧主体板块在上面，左侧边栏在下面 */
    .single-product-page-wrap .product-page-layout {
        display: flex;
        flex-direction: column;
        gap: 28px;
    }

    .single-product-page-wrap .product-details-content {
        order: 1;
        width: 100%;
        padding: 24px;
    }

    .single-product-page-wrap .product-sidebar {
        order: 2;
        width: 100%;
    }

    .product-single-top {
        grid-template-columns: 1fr;
        padding: 24px;
    }

    .products-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .single-inquiry-box .form-row-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .product-archive-page-wrap {
        padding: 20px 0 40px;
    }

    .product-archive-page-wrap .category-main-content {
        padding: 24px 18px 32px;
    }

    .product-archive-page-wrap .sidebar-widget {
        padding: 20px 16px;
    }

    .category-header-title {
        font-size: 1.5rem;
    }

    .related-articles-grid {
        grid-template-columns: 1fr;
    }

    .video-tutorial-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .products-grid-3 {
        grid-template-columns: 1fr;
    }
}

/* 6. 单品详情页专属大图 Lightbox 灯箱弹窗样式（高质感、轻量化、支持双向同步与键盘导航） */
.product-lightbox-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgb(0 0 0 / 80%); /* 深色高透遮罩 */
    backdrop-filter: blur(1px);
    -webkit-backdrop-filter: blur(1px);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.product-lightbox-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.product-lightbox-container {
    position: relative;
    width: 92vw;
    max-width: 1100px;
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 16px 20px;
}

/* 顶部工具栏 */
.lightbox-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #ffffff;
    z-index: 10;
}

.lightbox-counter {
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.85);
    background: rgba(0, 0, 0, 0.35);
    padding: 4px 14px;
    border-radius: 20px;
}

.lightbox-close-btn {
    background: transparent;
    border: none;
    color: #ffffff;
    font-size: 2.25rem;
    line-height: 1;
    cursor: pointer;
    padding: 4px 12px;
    border-radius: 50%;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.lightbox-close-btn:hover {
    color: var(--color-primary);
    transform: scale(1.15) rotate(90deg);
}

/* 中部主舞台区域与左右箭头 */
.lightbox-content-wrap {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    margin: 10px 0;
    min-height: 0;
}

.lightbox-image-stage {
    flex: 1;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.lightbox-image-stage img {
    max-width: 100%;
    max-height: 72vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.45);
    transform: scale(0.95);
    opacity: 0;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
}

.product-lightbox-backdrop.active .lightbox-image-stage img {
    transform: scale(1);
    opacity: 1;
}

/* 左右切换箭头按钮 */
.lightbox-nav-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #ffffff;
    font-size: 1.85rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    flex-shrink: 0;
    z-index: 10;
}

.lightbox-nav-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

/* 底部标题 */
.lightbox-caption {
    text-align: center;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9375rem;
    font-weight: 500;
    padding-top: 8px;
}