/* ==========================================================================
   产品中心内页 | products.html
   ========================================================================== */

/* ---------- 内页 Banner ---------- */
.page-banner {
  position: relative;
  height: clamp(200px, 28vw, 260px);
  overflow: hidden;
  background-color: var(--color-primary-darker);
}

.page-banner__bg {
  position: absolute;
  inset: 0;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  transform: scale(1.02);
}

.page-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(15, 74, 125, 0.82) 0%,
    rgba(28, 116, 187, 0.55) 48%,
    rgba(28, 116, 187, 0.28) 100%
  );
}

.page-banner__content {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: var(--color-text-inverse);
}

.page-banner__title {
  margin: 0;
  font-size: clamp(1.75rem, 3.2vw, 2.25rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.2;
  color: #ffffff;
}

.page-banner__en {
  margin: 0.4rem 0 0;
  font-size: 0.8125rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  opacity: 0.9;
  font-weight: 500;
  color: #ffffff;
}

/* ---------- Banner 下方面包屑 ---------- */
.page-crumb-bar {
  background: var(--color-bg-white);
  border-bottom: 1px solid var(--color-border-light);
}

.page-crumb-bar .container {
  display: flex;
  align-items: center;
  min-height: 44px;
}

.page-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.page-breadcrumb a {
  color: var(--color-text-secondary);
}

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

.page-breadcrumb__sep {
  color: var(--color-text-muted);
}

.page-breadcrumb__current {
  color: var(--color-text-regular);
}

/* ---------- 主体双栏 ---------- */
.page-body {
  padding: 36px 0 56px;
  background: var(--color-bg-page);
}

.page-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

/* ---------- 左侧边栏 ---------- */
.page-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-side-block {
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
}

.page-side-block__head {
  margin: 0;
  padding: 14px 18px;
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.page-side-cats {
  list-style: none;
  margin: 0;
  padding: 6px 0;
}

.page-side-cat {
  border-bottom: 1px solid var(--color-border-light);
}

.page-side-cat:last-child {
  border-bottom: none;
}

.page-side-cat__btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 12px 16px;
  border: 0;
  background: transparent;
  color: var(--color-text-regular);
  font-size: 0.875rem;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}

.page-side-cat__btn:hover {
  color: var(--color-primary);
  background: var(--color-primary-lighter);
}

a.page-side-cat__btn {
  text-decoration: none;
}

.page-side-cat.is-active > .page-side-cat__btn,
.page-side-cat.is-open > .page-side-cat__btn {
  color: var(--color-primary);
  font-weight: 600;
}

.page-side-cat__arrow {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  color: var(--color-text-muted);
  transition: transform var(--transition), color var(--transition);
}

.page-side-cat.is-open > .page-side-cat__btn .page-side-cat__arrow {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.page-side-cat--leaf .page-side-cat__arrow {
  visibility: hidden;
}

.page-side-cat__subs {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.32s ease, opacity 0.24s ease;
}

.page-side-cat.is-open .page-side-cat__subs {
  max-height: 320px;
  opacity: 1;
}

.page-side-cat__subs a {
  display: block;
  padding: 8px 16px 8px 34px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  transition: color var(--transition), background var(--transition);
}

.page-side-cat__subs a:hover,
.page-side-cat__subs a.is-active {
  color: var(--color-primary);
  background: var(--color-primary-lighter);
}

/* 联系我们 */
.page-side-contact {
  padding: 16px 18px 18px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.page-side-contact__name {
  margin: 0 0 10px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.45;
}

.page-side-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-side-contact__list li {
  display: grid;
  grid-template-columns: 2.5em 1fr;
  gap: 6px;
  align-items: start;
}

.page-side-contact__label {
  color: var(--color-primary);
  font-weight: 600;
}

.page-side-contact__list a {
  color: var(--color-text-secondary);
  word-break: break-all;
}

.page-side-contact__list a:hover {
  color: var(--color-primary);
}

/* ---------- 右侧主区 ---------- */
.page-main {
  min-width: 0;
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  padding: 22px 24px 28px;
}

.page-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--color-border-light);
}

.page-toolbar__title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

/* ---------- 产品网格 ---------- */
.page-product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.page-product-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(15, 74, 125, 0.04);
  transition:
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
}

.page-product-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.page-product-card__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg-gray);
}

.page-product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.page-product-card:hover .page-product-card__media img {
  transform: scale(1.05);
}

.page-product-card__name {
  margin: 0;
  padding: 14px 12px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-text-regular);
  text-align: center;
  transition: color var(--transition);
}

.page-product-card:hover .page-product-card__name {
  color: var(--color-primary);
}

/* ---------- 分页 ---------- */
.page-pagination {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

.page-pagination a,
.page-pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  padding: 0 10px;
  font-size: 0.8125rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: var(--color-bg-white);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition:
    color var(--transition),
    border-color var(--transition),
    background var(--transition),
    box-shadow var(--transition);
}

.page-pagination a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.page-pagination .is-active {
  color: var(--color-text-inverse);
  background: var(--color-primary);
  border-color: var(--color-primary);
  font-weight: 600;
  cursor: default;
}

.page-pagination .is-disabled {
  opacity: 0.45;
  pointer-events: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .page-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 20px;
  }

  .page-main {
    padding: 18px 16px 22px;
  }

  .page-product-grid {
    gap: 14px;
  }
}

@media (max-width: 768px) {
  .page-banner {
    height: 180px;
  }

  .page-body {
    padding: 24px 0 40px;
  }

  .page-layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .page-sidebar .page-side-block__head {
    display: none;
  }

  .page-side-cats {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 2px 2px 10px;
    -webkit-overflow-scrolling: touch;
  }

  .page-side-cat {
    flex: 0 0 auto;
    border-bottom: none;
  }

  .page-side-cat__btn {
    width: auto;
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: var(--color-bg-white);
    white-space: nowrap;
    font-size: 0.85rem;
  }

  .page-side-cat__arrow,
  .page-side-cat__subs {
    display: none;
  }

  .page-side-cat.is-active > .page-side-cat__btn,
  .page-side-cat.is-open > .page-side-cat__btn {
    color: #fff;
    background: var(--color-primary);
    border-color: var(--color-primary);
  }

  .page-sidebar > .page-side-block:last-child {
    display: none;
  }

  .page-toolbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .page-pagination {
    justify-content: center;
  }
}

/* ---------- 手机端分类分组轮播（桌面端隐藏） ---------- */
.m-cat-groups {
  display: none;
}

@media (max-width: 768px) {
  .m-cat-groups {
    display: block;
  }

  .m-cat-group {
    margin-bottom: 30px;
  }

  .m-cat-group:last-child {
    margin-bottom: 0;
  }

  .m-cat-group__label {
    display: table;
    margin: 0 auto 14px;
    padding: 9px 26px;
    border-radius: 999px;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.04em;
  }

  .m-cat-group__viewport {
    overflow: hidden;
  }

  .m-cat-group__track {
    display: flex;
    margin: 0 -5px;
    padding: 0;
    list-style: none;
    transition: transform 0.35s ease;
  }

  .m-cat-group__track > li {
    flex: 0 0 50%;
    max-width: 50%;
    padding: 0 5px;
    box-sizing: border-box;
  }

  .m-cat-group__track .product-card,
  .m-cat-group__track .page-product-card {
    width: 100%;
  }

  .m-cat-group__pager {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
    padding: 0 6px;
  }

  .m-cat-group.is-single .m-cat-group__pager {
    display: none;
  }

  .m-cat-group__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: var(--color-bg-white);
    color: var(--color-text-regular);
    cursor: pointer;
  }

  .m-cat-group__btn:disabled {
    opacity: 0.35;
    cursor: default;
  }

  .m-cat-group__btn svg {
    width: 16px;
    height: 16px;
  }

  .m-cat-group__count {
    font-size: 0.875rem;
    color: var(--color-text-regular);
  }

  /* 手机端隐藏桌面筛选与平铺，改走分组轮播 */
  .products-section .products-sidebar,
  .products-section .products-grid,
  .page-body--products .page-sidebar,
  .page-body--products .page-product-grid,
  .page-body--products .page-pagination {
    display: none;
  }
}

@media (max-width: 480px) {
  .page-product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .page-product-card__name {
    font-size: 0.78rem;
  }
}

/* ==========================================================================
   产品详情页 | product-detail.html  (.pd-*)
   ========================================================================== */

/* ---------- Hero：图册 + 摘要 ---------- */
.pd-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-bottom: 8px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border-light);
}

.pd-gallery {
  min-width: 0;
}

.pd-gallery__main {
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg-gray);
  border: 1px solid var(--color-border-light);
}

.pd-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.pd-gallery__thumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

.pd-gallery__track {
  display: flex;
  flex: 1;
  gap: 8px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.pd-gallery__nav {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: var(--color-bg-white);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition:
    color var(--transition),
    border-color var(--transition),
    background var(--transition);
}

.pd-gallery__nav:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-lighter);
}

.pd-gallery__nav svg {
  width: 16px;
  height: 16px;
}

.pd-thumb {
  flex: 0 0 calc(25% - 6px);
  min-width: 56px;
  aspect-ratio: 1 / 1;
  padding: 0;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg-gray);
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.pd-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.pd-thumb:hover {
  border-color: var(--color-primary-light);
}

.pd-thumb.is-active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.pd-summary {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.pd-summary__title {
  margin: 0 0 16px;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.pd-summary__intro {
  flex: 1;
  padding: 0;
}

.pd-summary__intro p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.pd-summary__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.pd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition:
    background var(--transition),
    color var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.pd-btn--primary {
  color: var(--color-text-inverse);
  background: var(--gradient-primary);
  border: 1px solid transparent;
  box-shadow: var(--shadow-sm);
}

.pd-btn--primary:hover {
  background: var(--gradient-primary-hover);
  box-shadow: var(--shadow-md);
}

.pd-btn--outline {
  color: var(--color-primary);
  background: var(--color-bg-white);
  border: 1px solid var(--color-primary);
}

.pd-btn--outline:hover {
  color: var(--color-text-inverse);
  background: var(--color-primary);
}

/* ---------- 详情区块 ---------- */
.pd-section {
  padding: 26px 0 8px;
}

.pd-section + .pd-section {
  border-top: 1px solid var(--color-border-light);
}

.pd-section__title {
  position: relative;
  margin: 0 0 16px;
  padding-left: 14px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.pd-section__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.2em;
  bottom: 0.2em;
  width: 4px;
  border-radius: 2px;
  background: var(--gradient-primary);
}

.pd-section__body {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-text-regular);
}

.pd-section__body p {
  margin: 0 0 12px;
}

.pd-section__body p:last-child {
  margin-bottom: 0;
}

.pd-list {
  margin: 0;
  padding-left: 1.35em;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pd-list li {
  padding-left: 4px;
  color: var(--color-text-regular);
}

.pd-list li::marker {
  color: var(--color-primary);
  font-weight: 600;
}

/* ---------- 图表 ---------- */
.pd-chart-wrap {
  margin: 16px 0 8px;
  padding: 16px;
  background: linear-gradient(180deg, #f8fbfe 0%, #ffffff 100%);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  height: 320px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.pd-chart-wrap canvas {
  display: block;
  width: 100% !important;
  min-width: 320px;
  height: 100% !important;
}

.pd-chart-caption {
  margin: 0 0 4px !important;
  text-align: center;
  font-size: 0.8125rem !important;
  color: var(--color-text-muted) !important;
}

/* ---------- 工艺流程图 ---------- */
.pd-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px 6px;
  margin: 20px 0;
  padding: 22px 16px;
  background: linear-gradient(135deg, rgba(28, 116, 187, 0.04) 0%, rgba(74, 149, 209, 0.06) 100%);
  border: 1px dashed rgba(28, 116, 187, 0.28);
  border-radius: var(--radius-md);
}

.pd-flow__inputs {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pd-flow__box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 88px;
  min-height: 40px;
  padding: 8px 16px;
  background: var(--color-bg-white);
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius-sm);
  color: var(--color-primary-darker);
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  line-height: 1.3;
  box-shadow: var(--shadow-sm);
}

.pd-flow__box--accent {
  background: var(--gradient-primary);
  border-color: transparent;
  color: var(--color-text-inverse);
  min-width: 120px;
}

.pd-flow__box--target {
  background: var(--color-primary-darker);
  border-color: var(--color-primary-darker);
  color: var(--color-text-inverse);
  min-width: 110px;
}

.pd-flow__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 36px;
  height: 20px;
}

.pd-flow__arrow span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  position: relative;
}

.pd-flow__arrow span::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--color-primary);
  border-right-width: 0;
}

.pd-flow-photos {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 8px;
}

.pd-flow-photos figure {
  flex: 1 1 200px;
  min-width: 0;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-gray);
}

.pd-flow-photos img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.pd-flow-photos figcaption {
  padding: 8px 12px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  text-align: center;
  background: var(--color-bg-white);
}

/* ---------- 上下篇 ---------- */
.pd-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--color-border-light);
}

.pd-pager a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg-page);
  text-decoration: none;
  transition:
    border-color var(--transition),
    background var(--transition),
    box-shadow var(--transition);
}

.pd-pager a:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-lighter);
  box-shadow: var(--shadow-sm);
}

.pd-pager__next {
  text-align: right;
  align-items: flex-end;
}

.pd-pager__label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.pd-pager__name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
}

/* ---------- 详情页响应式 ---------- */
@media (max-width: 1024px) {
  .pd-hero {
    gap: 20px;
  }

  .pd-chart-wrap {
    height: 280px;
  }
}

@media (max-width: 768px) {
  .pd-hero {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-bottom: 22px;
  }

  .pd-gallery__main {
    aspect-ratio: 4 / 3;
  }

  .pd-flow {
    flex-direction: column;
    gap: 12px;
  }

  .pd-flow__inputs {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  .pd-flow__arrow {
    width: 20px;
    height: 28px;
  }

  .pd-flow__arrow span {
    width: 2px;
    height: 100%;
  }

  .pd-flow__arrow span::after {
    right: 50%;
    top: auto;
    bottom: -1px;
    transform: translateX(50%);
    border: 5px solid transparent;
    border-top-color: var(--color-primary);
    border-bottom-width: 0;
  }

  .pd-flow-photos {
    flex-direction: column;
  }

  .pd-flow-photos figure {
    flex-basis: auto;
  }

  .pd-pager {
    grid-template-columns: 1fr;
  }

  .pd-pager__next {
    text-align: left;
    align-items: flex-start;
  }

  .pd-chart-wrap {
    height: 260px;
    padding: 12px;
  }
}

@media (max-width: 480px) {
  .pd-summary__actions {
    flex-direction: column;
  }

  .pd-btn {
    width: 100%;
  }

  .pd-thumb {
    flex: 0 0 calc(33.333% - 6px);
  }
}