/* ══════════════════════════════════════════════════
   Products Pages Styles
   ═════════════════════════════════════════════════ */

.product-page-hero {
  position: relative;
  height: 580px;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
}

.product-page-hero-bg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-size: cover;
  background-position: center;
  filter: brightness(0.45);
}

.product-page-hero-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(29, 43, 116, 0.45);
}

.product-page-hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 700px;
}

.product-page-hero-label {
  display: inline-block;
  font-size: 13px;
  font-weight: var(--fw-medium);
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  margin-bottom: 16px;
}

.product-page-hero-title {
  font-size: clamp(40px, 4.5vw, 48px);
  font-weight: var(--fw-light);
  line-height: 1.2;
  margin-bottom: 20px;
  color: #fff;
  letter-spacing: var(--ls-wide);
}

.product-page-hero-desc {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
}

.section-product-categories { padding: 100px 0; }

.product-categories-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 48px;
}

.product-category-card {
  display: flex;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: var(--transition);
}

.product-category-card:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-4px);
  border-color: transparent;
}

.product-category-img {
  width: 45%;
  min-height: 280px;
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
}

.product-category-body {
  flex: 1;
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.product-category-title {
  font-size: 24px;
  font-weight: var(--fw-medium);
  color: var(--color-primary);
  margin-bottom: 12px;
}

.product-category-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.section-cta-banner { padding: 0; }

/* ── Product List Grid ─ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-4px);
  border-color: transparent;
}

.product-card-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  background-size: cover;
  background-position: center;
}

.product-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.product-card-title {
  font-size: 18px;
  font-weight: var(--fw-medium);
  color: var(--color-primary);
  line-height: 1.4;
  letter-spacing: var(--ls-tight);
}

.product-card-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.product-tag-label {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-secondary);
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.02em;
  align-self: flex-start;
  margin-top: 4px;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .product-categories-hero { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .product-category-card { flex-direction: column; }
  .product-category-img { width: 100%; min-height: 200px; }
  .product-grid { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════
   原材料页面 - 左侧分类 + 右侧横向产品列表（左图右文）
   ══════════════════════════════════════════════════ */

.section-raw-materials {
  background: #fff;
}

.raw-materials-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
}

/* 左侧分类侧边栏 */
.rm-sidebar {
  background: #fff;
  border-radius: var(--card-radius);
  padding: 24px 20px;
  height: fit-content;
  position: sticky;
  top: calc(var(--header-height) + 32px);
  border: 1px solid var(--color-border);
}

.rm-sidebar-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.rm-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rm-cat-link {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-muted);
  border-radius: 6px;
  transition: var(--transition);
}

.rm-cat-link:hover,
.rm-cat-link.active {
  background: var(--color-primary);
  color: #fff;
}

/* 右侧产品列表 */
.rm-product-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rm-product-item {
  height: 250px;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.rm-product-link {
  display: flex;
  height: 100%;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  outline: none;
}

.rm-product-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.rm-product-item:hover {
  box-shadow: 0 4px 20px rgba(29, 43, 116, 0.08);
  transform: translateY(-2px);
  border-color: transparent;
}

.rm-product-img {
  width: 320px;
  min-height: 180px;
  flex-shrink: 0;
  overflow: hidden;
}

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

.rm-product-body {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: center;
  min-width: 0;
  flex: 1;
}

.rm-product-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.3;
  letter-spacing: 0.01em;
  margin: 0;
}

.rm-product-desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-primary);
  opacity: 0.85;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
}

.rm-product-tag {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  color: #c8335a;
  background: rgba(200, 51, 90, 0.12);
  padding: 6px 14px;
  border-radius: 6px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 4px;
  width: fit-content;
}

/* 原材料页面响应式 */
@media (max-width: 1024px) {
  .raw-materials-layout {
    grid-template-columns: 1fr;
  }
  .rm-sidebar {
    position: static;
  }
  .rm-sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }
  .rm-cat-link {
    padding: 8px 16px;
    background: var(--color-surface);
    border-radius: 100px;
  }
  .rm-cat-link:hover,
  .rm-cat-link.active {
    background: var(--color-primary);
    color: #fff;
  }
  .rm-product-link {
    flex-direction: column;
  }
  .rm-product-img {
    width: 100%;
    min-height: 200px;
  }
}

@media (max-width: 768px) {
  .rm-product-body {
    padding: 20px 24px;
  }
  .rm-product-title {
    font-size: 18px;
  }
}

/* ══════════════════════════════════════════════════
   产品详情页
   ══════════════════════════════════════════════════ */

.page-hero-detail { height: 70vh; min-height: 500px; }
.section-pd-info { padding: var(--section-gap) 0; }
.pd-breadcrumb { font-size: 13px; color: var(--color-muted); margin-bottom: 32px; }
.pd-breadcrumb a { color: var(--color-primary); text-decoration: none; }
.pd-breadcrumb a:hover { text-decoration: underline; }
.pd-breadcrumb span { margin: 0 6px; color: var(--color-muted); }
.pd-layout { display: block; }
.pd-main { display: flex; gap: 40px; }
.pd-img-wrap { width: 420px; flex-shrink: 0; }
.pd-img { width: 100%; aspect-ratio: 1; border-radius: 12px; background-size: cover; background-position: center; background-color: var(--color-surface); }
.pd-content { flex: 1; min-width: 0; }
.pd-name { font-size: 28px; font-weight: 600; color: var(--color-primary); margin-bottom: 12px; }
.pd-cat-tag { display: inline-block; font-size: 12px; font-weight: 600; color: #c8335a; background: rgba(200,51,90,0.1); padding: 4px 14px; border-radius: 100px; margin-bottom: 16px; }
.pd-divider { width: 48px; height: 3px; background: var(--color-primary); border-radius: 2px; margin-bottom: 28px; }
.pd-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 32px; }
.pd-info-item { background: var(--color-surface); padding: 16px; border-radius: 8px; }
.pd-info-label { display: block; font-size: 12px; font-weight: 600; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px; }
.pd-info-value { font-size: 15px; color: var(--color-text); font-weight: 500; }
.pd-section-title { font-size: 18px; font-weight: 600; color: var(--color-primary); margin-bottom: 12px; }
.pd-text { font-size: 15px; line-height: 1.8; color: var(--color-muted); margin-bottom: 28px; }
.pd-features { list-style: none; padding: 0; margin-bottom: 28px; }
.pd-features li { display: flex; align-items: center; gap: 10px; padding: 10px 0; font-size: 15px; color: var(--color-text); border-bottom: 1px solid var(--color-border); }
.pd-features li svg { color: var(--color-success); flex-shrink: 0; }
.pd-features li:last-child { border-bottom: none; }

@media (max-width: 1200px) {
  .pd-breadcrumb { display: block; }
}

@media (max-width: 768px) {
  .pd-main { flex-direction: column; }
  .pd-img-wrap { width: 100%; }
  .pd-info-grid { grid-template-columns: 1fr; }
  .page-hero-detail { height: 60vh; min-height: 400px; }
}

/* ══════════════════════════════════════════════════
   特色半成品 - 上下布局：分类标签 + 4列产品网格
   ══════════════════════════════════════════════════ */

.section-product-categories {
  background: var(--color-surface);
  padding: 60px 0 80px;
}

.category-tabs {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  justify-content: center;
  flex-wrap: wrap;
}

.category-tab {
  display: inline-flex;
  align-items: center;
  padding: 12px 32px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-muted);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.category-tab:hover,
.category-tab.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-4px);
  border-color: transparent;
}

.product-card-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.product-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.product-card-title {
  font-size: 18px;
  font-weight: var(--fw-medium);
  color: var(--color-primary);
  line-height: 1.4;
  letter-spacing: var(--ls-tight);
  margin: 0;
}

.product-card-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* 响应式 */
@media (max-width: 1200px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .product-grid { grid-template-columns: 1fr; }
  .category-tabs { gap: 12px; }
  .category-tab { padding: 10px 24px; font-size: 14px; }
}