/**
 * page.css
 * 子页面通用样式 — About / Products / Business / News / Contact
 */

/* ══════════════════════════════════════
   主内容区（与首页一致，避开左侧导航）
══════════════════════════════════════ */
.main-content {
  margin-left: var(--sidebar-width);
  padding-top: var(--header-height);
}
/* ══════════════════════════════════════
   页面顶部 Banner
═══════════════════════════════════════ */
.page-banner {
  position: relative;
  height: 340px;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--c-navy);
}
.page-banner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center center;
}
.page-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(15, 32, 68, 0.85) 0%, rgba(15, 32, 68, 0.45) 60%, rgba(15, 32, 68, 0.15) 100%);
  z-index: 1;
}
.page-banner__content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  padding: 0 24px;
  max-width: 700px;
  width: 100%;
}
.page-banner__breadcrumb {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}
.page-banner__breadcrumb a {
  color: rgba(255,255,255,0.7);
  transition: color 0.2s ease;
}
.page-banner__breadcrumb a:hover { color: #fff; }
.page-banner__breadcrumb .sep {
  margin: 0 6px;
  color: rgba(255,255,255,0.3);
}
.page-banner__title {
  font-size: 48px;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 12px;
  text-transform: uppercase;
  line-height: 1.1;
}
.page-banner__sub {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}

/* ══════════════════════════════════════
   侧边栏链接样式（子页面用 <a> 替代 button）
══════════════════════════════════════ */
.left-sidebar__nav-link {
  display: block;
  width: 100%;
  padding: 10px 24px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0;
  color: rgba(15,32,68,0.6);
  text-align: left;
  transition: color 0.2s ease, background 0.2s ease;
  border-left: 3px solid transparent;
  text-transform: uppercase;
  text-decoration: none;
}
.left-sidebar__nav-link:hover {
  color: var(--c-navy);
  background: rgba(15,32,68,0.06);
}
.left-sidebar__nav-link.active {
  color: var(--c-navy);
  background: rgba(15,32,68,0.10);
  border-left-color: var(--c-navy);
}

/* ══════════════════════════════════════
   内容区块通用
══════════════════════════════════════ */
.page-section {
  padding: var(--section-py) 0;
  position: relative;
}
.page-section--alt {
  background: var(--bg-alt);
}
.page-section__bg {
  position: absolute;
  z-index: 0;
  pointer-events: none;
  opacity: 0.7;
}
.page-section__bg--tl {
  top: 0;
  left: 0;
  max-width: 30%;
  height: auto;
}
.page-section__bg--tr {
  top: 0;
  right: 0;
  max-width: 30%;
  height: auto;
}
.page-section--contact .container {
  position: relative;
  z-index: 1;
}
.page-section__header {
  text-align: center;
  margin-bottom: 56px;
}
.page-section__header .section-label {
  display: inline-block;
  margin-bottom: 14px;
}
.page-section__header .section-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800;
  color: var(--t-primary);
  letter-spacing: -0.8px;
  line-height: 1.2;
  margin-bottom: 14px;
}
.page-section__header .section-title span {
  color: var(--c-navy);
}
.page-section__header .section-desc {
  font-size: 16px;
  color: var(--t-muted);
  line-height: 1.75;
  max-width: 600px;
  margin: 0 auto;
}

/* ══════════════════════════════════════
   About 页面 — 时间线
══════════════════════════════════════ */
.timeline {
  position: relative;
  padding-left: 40px;
  margin-top: 40px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline__item {
  position: relative;
  margin-bottom: 40px;
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-navy);
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px var(--c-navy);
}
.timeline__year {
  font-size: 22px;
  font-weight: 800;
  color: var(--c-navy);
  margin-bottom: 6px;
}
.timeline__text {
  font-size: 15px;
  color: var(--t-secondary);
  line-height: 1.7;
}

/* About 页面 — 资质证书 */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.cert-card__icon {
  font-size: 36px;
  margin-bottom: 12px;
}
.cert-card__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--t-primary);
  margin-bottom: 6px;
}
.cert-card__desc {
  font-size: 13px;
  color: var(--t-muted);
  line-height: 1.6;
}

/* About 页面 — 数字统计 */
.about-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.about-stat-card {
  background: var(--c-navy);
  border-radius: 16px;
  padding: 36px 28px;
  color: #fff;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease;
}
.about-stat-card:hover {
  transform: translateY(-4px);
}
.about-stat-card__val {
  font-size: 42px;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1;
  margin-bottom: 6px;
}
.about-stat-card__val em {
  font-style: normal;
  font-size: 24px;
  color: var(--c-accent);
}
.about-stat-card__key {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  font-weight: 500;
}

/* ══════════════════════════════════════
   Products 页面 — 产品网格 (3 columns)
══════════════════════════════════════ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.product-detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  margin-bottom: 0;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  display: flex;
  flex-direction: column;
}
.product-detail-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.product-detail-card__img {
  width: 100%;
  height: auto;
  object-fit: cover;
}
.product-detail-card__body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-detail-card__tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--c-navy);
  background: rgba(15,32,68,0.08);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 10px;
  align-self: flex-start;
}
.product-detail-card__title {
  font-size: 18px;
  font-weight: 800;
  color: var(--t-primary);
  margin-bottom: 8px;
  letter-spacing: -0.3px;
  line-height: 1.3;
}
.product-detail-card__desc {
  font-size: 13px;
  color: var(--t-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
  flex: 1;
  /* 多行文本截断：超过3行用...省略 */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}
.product-detail-card__specs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-bottom: 16px;
}
.product-detail-card__spec {
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-surface);
  border-radius: 8px;
  font-size: 12px;
}
.product-detail-card__spec-key {
  color: var(--t-muted);
  font-weight: 500;
}
.product-detail-card__spec-val {
  color: var(--t-primary);
  font-weight: 700;
}
.product-detail-card__apps {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.product-detail-card__app {
  display: inline-block;
  padding: 4px 10px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 11px;
  color: var(--t-secondary);
}
.product-detail-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-navy);
  text-decoration: none;
  transition: gap 0.2s ease;
}
.product-detail-card__cta:hover {
  gap: 12px;
}

/* 图片链接 */
.product-detail-card__img-link {
  display: block;
  overflow: hidden;
}
.product-detail-card__img-link .product-detail-card__img {
  transition: transform 0.4s ease;
}
.product-detail-card__img-link:hover .product-detail-card__img {
  transform: scale(1.05);
}

/* 标题链接 */
.product-detail-card__title-link {
  text-decoration: none;
  color: inherit;
}
.product-detail-card__title-link:hover .product-detail-card__title {
  color: var(--c-navy);
}
.product-detail-card__title-link .product-detail-card__title {
  transition: color 0.2s ease;
}

/* More 按钮 */
.product-detail-card__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-navy);
  text-decoration: none;
  padding: 8px 0;
  transition: gap 0.2s ease;
}
.product-detail-card__more:hover {
  gap: 12px;
}

/* ══════════════════════════════════════
   News 页面 — 新闻网格
══════════════════════════════════════ */
.news-featured {
  display: grid !important;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  position: static;
  min-height: 0;
  border-radius: 0;
  overflow: visible;
  cursor: default;
  transform: translateY(0) ;
}
.news-featured__img-wrap {
  min-height: 300px;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
}
.news-featured__img-link {
  display: flex; align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}
.news-featured__body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #fafafa;
  border-radius: 16px;
}
.news-featured__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.news-featured__meta-news {
  font-size: 16px;
  font-weight: 700;
  color: #f39c12;
  letter-spacing: 1px;
}
.news-featured__meta-date {
  font-size: 16px;
  font-weight: 700;
  color: #f39c12;
}
.news-featured__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--t-primary);
  line-height: 1.5;
  margin-bottom: 16px;
}
.news-featured__excerpt {
  font-size: 14px;
  color: #888;
  line-height: 1.7;
  margin-bottom: 24px;
}
.news-featured__more {
  display: inline-block;
  padding: 8px 24px;
  background: #fff;
  color: var(--t-primary);
  border: 1px solid #ddd;
  border-radius: 30px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  align-self: flex-start;
  transition: all 0.2s ease;
}
.news-featured__more:hover {
  background: var(--c-navy);
  color: #fff;
  border-color: var(--c-navy);
}

.news-list {
  margin-top: 48px;
}
.news-item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 24px 5%; margin: 2% 0;
  border-bottom: 1px solid #eee;
  transition: background 0.2s ease;
  opacity: 1 !important;
  transform: translateY(0) !important;
}
.news-item:hover {
  background: #fafafa;
}
.news-item:last-child {
  border-bottom: none;
}
.news-item__date {
  flex-shrink: 0;
  width: 100px;
  text-align: right;
}
.news-item__date-main {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--c-navy);
}
.news-item__date-year {
  display: block;
  font-size: 14px;
  color: #999;
  margin-top: 4px;
}
.news-item__content {
  flex: 1;
  min-width: 0;
}
.news-item__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--t-primary);
  line-height: 1.5;
  margin-bottom: 8px;
}
.news-item__excerpt {
  font-size: 14px;
  color: #888;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item__arrow {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #ddd;
  border-radius: 50%;
  color: var(--t-primary);
  text-decoration: none;
  font-size: 16px;
  transition: all 0.2s ease;
}
.news-item__arrow:hover {
  background: var(--c-navy);
  color: #fff;
  border-color: var(--c-navy);
}

/* ══════════════════════════════════════
   Video Page — 视频展示页面
══════════════════════════════════════ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  padding: 40px 5% 60px;
}
.video-card {
  background: transparent;
}
.video-card__thumb {
  position: relative;
  margin-bottom: 16px;
  overflow: hidden;
}
.video-card__thumb img {
  width: 100%;
  height: auto;
  display: block;
}
.video-card__play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}
.video-card__play-btn svg {
  width: 24px;
  height: 24px;
  margin-left: 3px;
}
.video-card__play-btn:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: translate(-50%, -50%) scale(1.1);
}
.video-card__duration {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 4px;
}
.video-card__info {
  text-align: center;
}
.video-card__title {
  font-size: 14px;
  color: #333;
  margin: 0;
  line-height: 1.5;
}

/* Video Modal */
.video-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
.video-modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-modal__overlay {
  position: absolute;
  inset: 0;
  cursor: pointer;
}
.video-modal__content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 90%;
  max-width: 900px;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.video-modal__close {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.95);
  border: none;
  border-radius: 50%;
  color: #333;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1001;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.video-modal__close svg {
  width: 20px;
  height: 20px;
}
.video-modal__close:hover {
  background: #fff;
  transform: scale(1.1);
}
.video-modal__player {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
#videoPlayer {
  width: 100%;
  height: auto;
  max-height: 75vh;
  display: block;
  background: #000;
}

@media (max-width: 768px) {
  .video-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 30px 5% 40px;
  }
  .video-card__play-btn {
    width: 50px;
    height: 50px;
  }
  .video-card__play-btn svg {
    width: 20px;
    height: 20px;
  }
  .video-modal__content {
    width: 95%;
  }
  .video-modal__close {
    top: 8px;
    right: 8px;
    width: 36px;
    height: 36px;
  }
}

/* ══════════════════════════════════════
   Projects Page — 项目展示页面
══════════════════════════════════════ */
.projects-header {
  text-align: center;
  padding: 60px 0 40px;
  border-bottom: 1px solid #eee;
  margin-bottom: 40px;
}
.projects-header__title {
  font-size: 28px;
  font-weight: 700;
  color: #002c5f;
  line-height: 1.4;
  margin: 0 0 16px 0;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}
.projects-header__subtitle {
  font-size: 15px;
  color: #666;
  margin: 0 0 12px 0;
}
.projects-industries {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13px;
  color: #666;
  line-height: 1.9;
}
.projects-industries li {
  margin: 2px 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  padding: 0 5% 60px;
}
.projects-card {
  background: transparent;
}
.projects-card__image {
  width: 100%;
  margin-bottom: 16px;
  border-bottom: 1px solid #ddd;
  padding-bottom: 12px;
}
.projects-card__image img {
  width: 100%;
  height: auto;
  display: block;
}
.projects-card__title {
  font-size: 15px;
  font-weight: 700;
  color: #333;
  margin: 0 0 12px 0;
  line-height: 1.5;
}
.projects-card__title::after {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: #002c5f;
  margin-top: 8px;
}
.projects-card__text {
  font-size: 13px;
  color: #555;
  line-height: 1.7;
  margin: 0;
}

@media (max-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .projects-header__title {
    font-size: 24px;
  }
}
@media (max-width: 640px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .projects-header {
    padding: 40px 0 30px;
  }
  .projects-header__title {
    font-size: 20px;
  }
}

/* ══════════════════════════════════════
   Technology Page — 技术研发页面
══════════════════════════════════════ */
.tech-section {
  padding: 60px 0;
}
.tech-section__content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 5%;
}
.tech-section--light {
  background: #f5f5f5;
}
.tech-section--dark {
  background: #0a1628;
  position: relative;
  overflow: hidden;
}
.tech-section--dark::before {
  content: none;
}
.tech-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.tech-section--bg {
  background: url('/img/R-D/ny_16.webp') no-repeat;
  background-position: bottom;
  position: relative;
  padding: 60px 0 20%;
}
.tech-section--bg .tech-section__content {
  position: relative;
  z-index: 1;
}
.tech-section__title {
  font-size: 32px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 20px;
  color: #333;
  letter-spacing: 2px;
}
.tech-section--dark .tech-section__title {
  color: #fff;
}
.tech-section__subtitle {
  font-size: 16px;
  text-align: center;
  margin-bottom: 16px;
  color: #666;
}
.tech-section--dark .tech-section__subtitle {
  color: #aaa;
}
.tech-section__institute {
  font-size: 14px;
  text-align: center;
  margin-bottom: 8px;
  color: #888;
}
.tech-section--dark .tech-section__institute {
  color: #ccc;
}
.tech-section__text {
  font-size: 15px;
  line-height: 1.9;
  color: #555;
  text-align: justify;
  margin-top: 32px;
}
.tech-section--dark .tech-section__text {
  color: #ddd;
}
.tech-section__subtitle-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 24px;
  color: #333;
}
.tech-section--dark .tech-section__subtitle-title {
  color: #fff;
}
.tech-section__list {
  margin-bottom: 24px;
  padding-left: 0;
}
.tech-section__list li {
  font-size: 14px;
  line-height: 2;
  color: #555;
  list-style: none;
  padding-left: 20px;
  position: relative;
}
.tech-section--dark .tech-section__list li {
  color: #ccc;
}
.tech-section__team-text {
  font-size: 14px;
  line-height: 1.8;
  color: #555;
  margin-bottom: 32px;
}
.tech-section--dark .tech-section__team-text {
  color: #ccc;
}
.tech-equipment-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.tech-equipment-item {
  text-align: center;
}
.tech-equipment-item img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 8px;
  background: #1a2a4a;
}
.tech-equipment-item__caption {
  font-size: 12px;
  color: #888;
  margin-top: 12px;
  line-height: 1.4;
}
.tech-section--dark .tech-equipment-item__caption {
  color: #bbb;
}
.tech-projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.tech-projects-list {
  padding-left: 0;
}
.tech-projects-list li {
  font-size: 14px;
  line-height: 2.2;
  color: #555;
  list-style: none;
}
.tech-projects-desc p {
  font-size: 14px;
  line-height: 1.9;
  color: #555;
}

@media (max-width: 1024px) {
  .tech-equipment-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .tech-section {
    padding: 40px 0;
  }
  .tech-section__title {
    font-size: 24px;
  }
  .tech-equipment-grid {
    grid-template-columns: 1fr;
  }
  .tech-projects-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* ══════════════════════════════════════
   News Detail Page — 新闻详情页
══════════════════════════════════════ */
.news-detail-header {
  margin-bottom: 32px;
}
.news-detail-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.news-detail-category {
  font-size: 14px;
  font-weight: 600;
  color: #f39c12;
  letter-spacing: 1px;
}
.news-detail-date {
  font-size: 14px;
  color: #999;
}
.news-detail-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--t-primary);
  line-height: 1.4;
  letter-spacing: -0.5px;
}
.news-detail-content {
  width: 100%;
  margin: 0 0 48px;
}
.news-detail-lead {
  font-size: 18px;
  font-weight: 500;
  color: var(--t-primary);
  line-height: 1.8;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid #eee;
}
.news-detail-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--t-primary);
  margin: 32px 0 16px;
}
.news-detail-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--t-primary);
  margin: 24px 0 12px;
}
.news-detail-content p {
  font-size: 15px;
  color: #666;
  line-height: 1.8;
  margin-bottom: 16px;
}
.news-detail-content a {
  color: var(--c-navy);
  text-decoration: underline;
}
.news-detail-content a:hover {
  color: #0a2540;
}
.news-detail-highlight {
  background: #fafafa;
  padding: 24px;
  border-radius: 12px;
  margin: 24px 0;
}
.news-detail-highlight p {
  font-size: 14px;
  margin-bottom: 8px;
}
.news-detail-highlight p:last-child {
  margin-bottom: 0;
}

/* News Navigation */
.news-detail-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid #eee;
}
.news-detail-nav__prev,
.news-detail-nav__next {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--t-primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
}
.news-detail-nav__prev:hover,
.news-detail-nav__next:hover {
  background: var(--c-navy);
  color: #fff;
  border-color: var(--c-navy);
}

/* 新闻分页 */
.news-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}
.news-pagination__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--t-secondary);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
  cursor: pointer;
  text-decoration: none;
}
.news-pagination__btn:hover,
.news-pagination__btn.active {
  background: var(--c-navy);
  color: #fff;
  border-color: var(--c-navy);
}

/* ══════════════════════════════════════
   Contact 页面 — 地图
══════════════════════════════════════ */
.contact-map {
  width: 100%;
  height: 360px;
  background: var(--bg-surface);
  border-radius: 16px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--t-muted);
  font-size: 15px;
  margin-bottom: 48px;
  overflow: hidden;
}
.contact-map img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}

/* ══════════════════════════════════════
   About 页面 — 工厂大图 */
.about-hero__img {
  width: 100%;
  height: 420px;
  background-size: cover;
  background-position: center center;
}

/* ══════════════════════════════════════
   About 页面 — 统计数字 + 标题栏（白色区域） */
.about-stats-bar {
  background: #fff;
  padding: 5% 0;
  position: relative;
  overflow: hidden;
}
.about-stats-bg-text {
  position: absolute;
  top: 50%;
  left: 3%;
  right: 3%;
  transform: translateY(-50%);
  font-size: clamp(72px, 11vw, 260px);
  font-weight: 900;
  color: rgba(15,32,68,0.03);
  letter-spacing: 32px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 0;
  text-align: center;
  user-select: none;
  overflow: hidden;
}
.about-stats-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  position: relative;
  z-index: 1;
}
.about-stats-left {
  flex: 0 0 auto;
}
.about-stats-brand {
  margin-bottom: 10px;
}
.about-stats-brand__firstar {
  font-size: 13px;
  font-weight: 800;
  color: var(--c-navy);
  letter-spacing: 0.5px;
}
.about-stats-brand__corp {
  font-size: 13px;
  font-weight: 600;
  color: #999;
  margin-left: 4px;
  letter-spacing: 0.5px;
}
.about-stats-title {
  font-size: 42px;
  font-weight: 900;
  color: #1a1a1a;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 8px;
}
.about-stats-desc {
  font-size: 13px;
  color: #888;
  line-height: 1.5;
}
.about-stats-right {
  display: flex;
  flex: 1;
  justify-content: center;
}
.about-stat-item {
  text-align: center;
  width: 33%;
}
}
.about-stat-item__label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: #888;
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.about-stat-item__val {
  display: block;
  font-size: 3rem;
  font-weight: 900;
  color: var(--c-accent);
  line-height: 1;
  letter-spacing: -0.5px;
  font-style: italic;
}

/* About 页面 — 三个公司卡片 */
.about-companies {
  padding: 5% 0;
  background: #f0f4f7;
}
.about-companies-header {
  margin-bottom: 36px;
}
.about-companies-title {
  font-size: 32px;
  font-weight: 800;
  font-family: 'Montserrat', sans-serif;
  color: var(--c-navy);
  letter-spacing: -0.5px;
  margin-bottom: 14px;
  line-height: 1.2;
}
.about-companies-desc {
  font-size: 15px;
  color: var(--t-secondary);
  line-height: 1.8;
}
.about-company-card {
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid #eee;
}
.about-company-card:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.about-company-card__title {
  font-size: 15px;
  font-weight: 800;
  color: var(--c-navy);
  margin-bottom: 14px;
  letter-spacing: 0.3px;
}
.about-company-card__list {
  list-style: disc;
  padding-left: 20px;
  color: var(--t-secondary);
  font-size: 14px;
  line-height: 1.85;
}
.about-company-card__list li {
  margin-bottom: 4px;
}
.about-company-footer {
  font-size: 14px;
  color: var(--t-secondary);
  line-height: 1.8;
  margin-top: 32px;
  margin-bottom: 32px;
}
.about-certs-gallery {
  display: flex;
  gap: 2%;
  margin-top: 24px;
}
.about-cert-img {
  width: calc((100% - 4%) / 3);
  height: auto;
  border-radius: 8px;
  border: 1px solid #ddd;
  cursor: zoom-in;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.about-cert-img:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}

/* 证书点击放大弹窗 */
.cert-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 40px;
}
.cert-lightbox.active {
  opacity: 1;
  visibility: visible;
}
.cert-lightbox__title {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  text-align: center;
}
.cert-lightbox__content {
  display: flex;
  gap: 20px;
  max-width: 90vw;
  max-height: 80vh;
}
.cert-lightbox__img {
  flex: 1;
  max-width: 45vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
}
.cert-lightbox__close {
  position: absolute;
  top: 24px;
  right: 32px;
  font-size: 36px;
  color: #fff;
  cursor: pointer;
  line-height: 1;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.cert-lightbox__close:hover { opacity: 1; }

@media (max-width: 768px) {
  .cert-lightbox {
    padding: 20px;
  }
  .cert-lightbox__content {
    flex-direction: column;
    gap: 15px;
  }
  .cert-lightbox__img {
    max-width: 85vw;
    max-height: 40vh;
  }
}

/* About 页面 — 证书展示 */
.about-certs-section {
  padding: 48px 0;
  background: #fff;
  border-top: 1px solid #eee;
}
.about-certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.about-cert-item {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 32px 20px;
  text-align: center;
  position: relative;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.about-cert-badges {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}
.about-cert-badge {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid var(--c-navy);
  border-radius: 3px;
  font-size: 10px;
  font-weight: 700;
  color: var(--c-navy);
  letter-spacing: 0.5px;
}
.about-cert-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1.6;
  margin-bottom: 20px;
}
.about-cert-stamp {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--c-navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-top: auto;
}

/* About 页面 — OUR ADVANTAGES */
.about-advantages-section {
  position: relative;
  color: #fff;
  padding: 5% 0;
  background: url('/img/n-about-WhyBg.webp') center/cover no-repeat;
}
.about-advantages-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(15,32,68,0.82);
  z-index: 0;
}
.about-advantages-section .container {
  position: relative;
  z-index: 1;
}
.about-advantages-header {
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255,255,255,0.18);
}
.about-advantages-title {
  font-size: 28px;
  font-weight: 900;
  color: #fff;
  letter-spacing: 3px;
  margin-bottom: 6px;
}
.about-advantages-sub {
  font-size: 12px;
  color: rgba(255,255,255,0.55);
  letter-spacing: 1.5px;
}
.about-advantages-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.18);
  position: relative;
}
.about-advantages-body::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  background: rgba(255,255,255,0.18);
}
.about-advantages-list {
  list-style: disc;
  padding-left: 18px;
  color: rgba(255,255,255,0.8);
  font-size: 1.1rem;
  line-height: 1.9;
}
.about-advantages-list li {
  margin-bottom: 3px;
}
.about-advantages-photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.about-advantages-photo img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: 6px;
}
.about-advantages-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  justify-content: center;
  margin-bottom: 28px;
}
.about-advantages-tags span {
  font-size: 10px;
  font-weight: 600;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.5px;
}
.about-advantages-iso {
  display: flex;
  justify-content: center;
  gap: 10%;
}
.iso-badge {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: rgba(255,255,255,0.6);
  line-height: 1.2;
  text-transform: uppercase;
}

/* ══════════════════════════════════════
   响应式
══════════════════════════════════════ */
@media (max-width: 1024px) {
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .product-detail-card__img { height: 180px; }
  .product-detail-card__title { font-size: 16px; }
  .product-detail-card__specs { grid-template-columns: 1fr; }
  .about-stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .news-featured {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .news-featured__img-wrap { min-height: 200px; }
  .news-featured__title { font-size: 18px; }
  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 0;
  }
  .news-item__date {
    width: auto;
    text-align: left;
  }
  .news-item__date-main { font-size: 20px; }
  /* News Detail Responsive */
  .news-detail-title { font-size: 24px; }
  .news-detail-lead { font-size: 16px; }
  .news-detail-content h2 { font-size: 20px; }
  .news-detail-nav { flex-direction: column; gap: 12px; }
  .page-banner { height: 240px; }
  .page-banner__title { font-size: 32px; }
  .products-grid { grid-template-columns: 1fr; gap: 16px; }
  .product-detail-card__img { height: 220px; }
  .product-detail-card__body { padding: 20px; }
  .product-detail-card__title { font-size: 20px; }
  .about-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .main-content { margin-left: 0; }
  .about-hero__img { height: 240px; }
  .about-stats-bg-text { font-size: 48px; letter-spacing: 10px; }
  .about-stats-row { flex-direction: column; align-items: flex-start; gap: 24px; }
  .about-stats-right { justify-content: flex-start; gap: 40px; width: 100%; }
  .about-stat-item__val { font-size: 28px; }
  .about-stats-title { font-size: 32px; }
  .about-certs-grid { grid-template-columns: 1fr; }
  .about-advantages-body { grid-template-columns: 1fr; gap: 24px; }
  .about-advantages-body::before { display: none; }
  .about-advantages-photos { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .about-stats-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .product-detail-card__specs { grid-template-columns: 1fr; }

  /* 产品详情页响应式 */
  .product-detail-sticky-header {
    padding: 16px 20px 0;
  }
  .product-detail-title { font-size: 20px; }
  .product-detail-layout {
    grid-template-columns: 1fr;
    padding: 16px 20px 32px;
  }
  .product-detail-gallery-col {
    width: 100%;
  }
  .product-detail-gallery { padding: 16px; }
  .product-detail-thumbs img { width: 60px; height: 60px; }
  .product-detail-section { padding: 24px 20px; }
  .size-table-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ══════════════════════════════════════
   Product Detail Page - 产品详情页
   ══════════════════════════════════════ */
.product-detail-wrapper {
  min-height: 100vh;
  background: #f5f6f7;
}

/* 固定位置的标题 */
.product-detail-sticky-header {
  position: sticky;
  top: var(--header-height);
  z-index: 100;
  background: #ffffff;
  padding: 28px 48px 0;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

.product-detail-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--t-primary);
  letter-spacing: -0.5px;
  margin: 0 0 16px 0;
}

.product-detail-divider {
  height: 2px;
  background: linear-gradient(to right, var(--c-navy), transparent);
  width: 100%;
}

/* 两栏布局：左侧固定300px + 右侧自适应 */
.product-detail-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 32px;
  padding: 32px 48px 64px;
  align-items: start;
}

/* 左侧图片列 */
.product-detail-gallery-col {
  width: 300px;
  position: sticky;
  top: 220px;
  max-height: calc(100vh - 185px - 32px);
  overflow-y: auto;
  align-self: start;
}

.product-detail-gallery-col .product-detail-gallery-section {
  margin-bottom: 0;
}

.product-detail-content-col {
  min-width: 0;
}

/* 产品图片区 */
.product-detail-gallery-section {
  margin-bottom: 0;
}

.product-detail-gallery {
  background: #ffffff;
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border);
}

.product-detail-main-image {
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
}

.product-detail-main-image img {
  width: 100%;
  height: auto;
  display: block;
  max-height: 480px;
  object-fit: cover;
}

/* 灯箱样式 */
.lightbox {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lightbox-content {
  max-width: 90%;
  max-height: 90vh;
  cursor: default;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 35px;
  color: #fff;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  z-index: 10000;
}

.lightbox-close:hover,
.lightbox-close:focus {
  color: #ccc;
}

/* 询价表单 */
.product-detail-form {
  margin-top: 24px;
  background: #ffffff;
  border-radius: 16px;
  padding: 28px 24px;
  border: 1px solid var(--border);
}

.product-detail-form__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--t-primary);
  margin: 0 0 20px 0;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--border);
}

.product-detail-form__form .form-group {
  margin-bottom: 16px;
}

.product-detail-form__form label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--t-primary);
  margin-bottom: 6px;
}

.product-detail-form__form input,
.product-detail-form__form textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 14px;
  color: var(--t-primary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
  font-family: inherit;
}

.product-detail-form__form input::placeholder,
.product-detail-form__form textarea::placeholder {
  color: var(--t-muted);
  font-size: 13px;
}

.product-detail-form__form input:focus,
.product-detail-form__form textarea:focus {
  border-color: var(--c-navy);
  box-shadow: 0 0 0 3px rgba(15, 32, 68, 0.08);
}

.product-detail-form__form textarea {
  resize: vertical;
  min-height: 42px;
  height: 42px;
}

.product-detail-form__btn {
  width: 100%;
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
  background: var(--c-navy);
  border: none;
  border-radius: 100px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
}

.product-detail-form__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(15, 32, 68, 0.25);
}

/* Section 段落 */
.product-detail-section {
  background: #ffffff;
  border-radius: 16px;
  padding: 36px 40px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
}

.product-detail-section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--t-primary);
  margin: 0 0 20px 0;
  letter-spacing: -0.3px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--border);
}

.product-detail-text {
  font-size: 15px;
  color: var(--t-secondary);
  line-height: 1.8;
  margin: 0 0 16px 0;
}

.product-detail-text:last-child {
  margin-bottom: 0;
}

/* 技术参数 */
.product-detail-specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.product-detail-spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: var(--bg-alt);
  border-radius: 10px;
  border: 1px solid var(--border);
}

.spec-key {
  font-size: 14px;
  color: var(--t-muted);
  font-weight: 500;
}

.spec-val {
  font-size: 14px;
  color: var(--c-navy);
  font-weight: 700;
}

/* 尺寸表格 */
.product-detail-size-table {
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.size-table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.size-table-header span:first-child {
  font-size: 15px;
  font-weight: 700;
  color: var(--t-primary);
}

.size-table-header span:last-child {
  font-size: 13px;
  color: var(--t-muted);
}

.size-table-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--border);
}

.size-cell {
  background: #ffffff;
  padding: 14px 12px;
  text-align: center;
  font-size: 13px;
  color: var(--t-secondary);
  font-weight: 500;
}

.size-cell:hover {
  background: var(--bg-alt);
  color: var(--c-navy);
}

/* 应用领域卡片 */
.product-detail-apps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.product-detail-app-card {
  background: var(--bg-alt);
  border-radius: 12px;
  padding: 24px 20px;
  text-align: center;
  border: 1px solid var(--border);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.product-detail-app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(15, 32, 68, 0.08);
}

.app-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.app-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--t-primary);
  margin: 0 0 8px 0;
}

.app-desc {
  font-size: 12px;
  color: var(--t-secondary);
  line-height: 1.6;
  margin: 0;
}

/* 产品优势 */
.product-detail-advantages {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.product-detail-advantage-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-alt);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.advantage-num {
  font-size: 24px;
  font-weight: 800;
  color: var(--c-navy);
  flex-shrink: 0;
  line-height: 1;
}

.advantage-content h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--t-primary);
  margin: 0 0 6px 0;
}

.advantage-content p {
  font-size: 13px;
  color: var(--t-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Product Display Images */
.product-detail-images-section {
  margin-bottom: 24px;
}

.product-detail-display-img {
  width: auto;
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
  margin: 0 auto 20px;
  background: #e6e9ee;
}

.product-detail-display-img:last-child {
  margin-bottom: 0;
  margin-left: auto;
  margin-right: auto;
}

/* Pagination (Previous / Next) */
.product-detail-pagination {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.product-detail-pagination__btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  background: #ffffff;
  color: var(--c-navy);
  text-decoration: none;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid #dde2ea;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.product-detail-pagination__btn:hover {
  background: var(--c-navy);
  color: #ffffff;
  border-color: var(--c-navy);
  box-shadow: 0 4px 12px rgba(15, 32, 68, 0.15);
}

.product-detail-pagination__btn--prev {
  justify-content: flex-start;
}

.product-detail-pagination__btn--next {
  justify-content: flex-end;
}

.product-detail-pagination__arrow {
  font-size: 16px;
  line-height: 1;
}

.product-detail-pagination__label {
  line-height: 1;
}

/* CTA Section */
.product-detail-cta-section {
  background: var(--c-navy);
  border-radius: 16px;
  padding: 48px 40px;
  text-align: center;
  margin-bottom: 24px;
}

.product-detail-cta-section h2 {
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 24px 0;
  letter-spacing: -0.3px;
}

.product-detail-cta-btn {
  display: inline-block;
  padding: 14px 36px;
  background: #ffffff;
  color: var(--c-navy);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 100px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.product-detail-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
}

/* ISO Certification Section */
.iso-cert-section {
  background: #f6f8fa;
  border-radius: 16px;
  padding: 56px 48px;
  margin-bottom: 24px;
  border-top: 1px solid #d9dee5;
}

.iso-cert-header {
  text-align: center;
  margin-bottom: 48px;
}

.iso-cert-brand {
  font-size: 36px;
  font-weight: 800;
  color: #0a2c5c;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.iso-cert-title {
  font-size: 34px;
  font-weight: 800;
  color: #2a2a2a;
  margin: 0 0 20px 0;
  line-height: 1.3;
  letter-spacing: 0.5px;
}

.iso-cert-sub1 {
  font-size: 17px;
  color: #5a6170;
  margin: 0 0 12px 0;
}

.iso-cert-sub2 {
  font-size: 15px;
  color: #6b7380;
  margin: 0;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.iso-cert-list {
  border-top: 1px solid #d9dee5;
}

.iso-cert-item {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  padding: 32px 16px;
  border-bottom: 1px solid #d9dee5;
}

.iso-cert-item:last-child {
  border-bottom: none;
}

.iso-cert-item__logo {
  flex-shrink: 0;
  width: 100px;
  height: auto;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.iso-cert-item__content {
  flex: 1;
  min-width: 0;
}

.iso-cert-item__content h3 {
  font-size: 19px;
  font-weight: 700;
  color: #2a2a2a;
  margin: 0 0 10px 0;
  line-height: 1.4;
}

.iso-cert-item__content p {
  font-size: 14px;
  color: #5a6170;
  margin: 0;
  line-height: 1.6;
}

/* Product Detail - 响应式 */
@media (max-width: 1024px) {
  .product-detail-sticky-header { padding: 24px 32px 0; }
  .product-detail-title { font-size: 28px; }
  .product-detail-layout {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px 32px 48px;
  }
  .product-detail-gallery-col {
    position: static;
    top: auto;
    width: 100%;
  }
  .product-detail-specs-grid { grid-template-columns: 1fr; }
  .size-table-grid { grid-template-columns: repeat(3, 1fr); }
  .product-detail-apps-grid { grid-template-columns: repeat(2, 1fr); }
  .iso-cert-section { padding: 40px 32px; }
  .iso-cert-title { font-size: 26px; }
  .iso-cert-brand { font-size: 30px; }
  .iso-cert-item { gap: 24px; padding: 24px 8px; }
  .iso-cert-item__logo { width: 80px; height: auto; }
}

@media (max-width: 768px) {
  .product-detail-sticky-header { padding: 20px 24px 0; }
  .product-detail-title { font-size: 24px; }
  .product-detail-layout { padding: 20px 24px 40px; }
  .product-detail-section { padding: 28px 24px; }
  .product-detail-section-title { font-size: 18px; }
  .size-table-grid { grid-template-columns: repeat(2, 1fr); }
  .product-detail-apps-grid { grid-template-columns: 1fr; }
  .product-detail-advantages { grid-template-columns: 1fr; }
  .product-detail-cta-section { padding: 36px 24px; }
  .product-detail-display-img { width: 100%; border-radius: 12px; margin: 0 auto 14px; }
  .product-detail-pagination { flex-direction: column; gap: 12px; }
  .product-detail-pagination__btn { padding: 12px 18px; font-size: 14px; }
  .product-detail-pagination__btn--prev,
  .product-detail-pagination__btn--next { justify-content: center; }
  .iso-cert-section { padding: 32px 20px; }
  .iso-cert-brand { font-size: 24px; letter-spacing: 1px; }
  .iso-cert-title { font-size: 22px; }
  .iso-cert-sub1 { font-size: 15px; }
  .iso-cert-sub2 { font-size: 13px; }
  .iso-cert-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    padding: 24px 4px;
  }
  .iso-cert-item__logo { width: 70px; height: auto; }
  .iso-cert-item__content h3 { font-size: 16px; }
}