.page-products {
  --color-primary: #1A3A5C;
  --color-primary-light: #2B5A8C;
  --color-secondary: #4CAF50;
  --color-accent: #E53935;
  --color-accent-light: #FF8A80;
  --color-neutral-dark: #0D0D0D;
  --color-neutral-light: #F5F5F5;
  --color-highlight: #FFD700;
  --font-heading: 'PingFang SC', sans-serif;
  --font-body: 'Noto Sans SC', sans-serif;
  --border-width: 3px;
  --shadow-strong: 8px 8px 0 rgba(0,0,0,0.25);
  --radius: 4px;
  --max-width: 1280px;
  --base-size: 18px;
  --space-unit: 8px;

  position: relative;
  background: var(--color-neutral-dark);
  color: var(--color-neutral-light);
  font-family: var(--font-body);
  font-size: var(--base-size);
  line-height: 1.6;
  padding-bottom: calc(var(--space-unit) * 10);
  overflow-x: hidden;
}

/* ===== 面包屑 ===== */
.page-products .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-unit);
  padding-top: calc(var(--space-unit) * 3);
  padding-bottom: calc(var(--space-unit) * 2);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}
.page-products .breadcrumb a {
  color: var(--color-accent-light);
  text-decoration: none;
  transition: color 0.2s;
}
.page-products .breadcrumb a:hover {
  color: var(--color-accent);
}
.page-products .breadcrumb__sep {
  margin: 0 calc(var(--space-unit) * 0.5);
}

/* ===== 产品概述 ===== */
.page-products .section-overview {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space-unit) * 5);
  padding-top: calc(var(--space-unit) * 4);
  padding-bottom: calc(var(--space-unit) * 8);
  align-items: center;
}
.page-products .overview__text {
  flex: 1 1 48%;
  min-width: 280px;
}
.page-products .overview__text .badge {
  display: inline-block;
  margin-bottom: calc(var(--space-unit) * 2);
}
.page-products .overview__desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: calc(var(--space-unit) * 4);
  max-width: 620px;
}
.page-products .overview__meta {
  display: flex;
  gap: calc(var(--space-unit) * 4);
  flex-wrap: wrap;
}
.page-products .overview__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: var(--border-width) solid rgba(255,255,255,0.12);
  padding: calc(var(--space-unit) * 2) calc(var(--space-unit) * 3);
  border-radius: var(--radius);
  min-width: 100px;
}
.page-products .overview__stat-num {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-highlight);
  line-height: 1.2;
}
.page-products .overview__stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.65);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.page-products .overview__visual {
  flex: 1 1 40%;
  min-width: 260px;
  position: relative;
}
.page-products .overview__img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border: var(--border-width) solid var(--color-primary-light);
  box-shadow: var(--shadow-strong);
  border-radius: var(--radius);
  display: block;
  object-fit: cover;
}
.page-products .overview__img-caption {
  display: block;
  margin-top: calc(var(--space-unit) * 1.5);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  font-style: italic;
  text-align: right;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding-bottom: calc(var(--space-unit) * 0.5);
}

/* ===== 新版亮点详解 ===== */
.page-products .section-highlights {
  padding-top: calc(var(--space-unit) * 6);
  padding-bottom: calc(var(--space-unit) * 8);
  border-top: 2px solid var(--color-accent);
}
.page-products .highlights__header {
  margin-bottom: calc(var(--space-unit) * 6);
}
.page-products .highlights__subtitle {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.6);
  margin-top: calc(var(--space-unit) * 1);
  font-style: italic;
}
.page-products .highlights__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: calc(var(--space-unit) * 5);
}

/* ===== 展览卡片 ===== */
.page-products .card--exhibit {
  background: rgba(255,255,255,0.04);
  border: var(--border-width) solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: calc(var(--space-unit) * 4) calc(var(--space-unit) * 3);
  box-shadow: var(--shadow-strong);
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.2s ease;
  cursor: pointer;
  position: relative;
  display: flex;
  flex-direction: column;
}
.page-products .card--exhibit:hover {
  border-color: var(--color-accent);
  background: rgba(229,57,53,0.08);
  transform: translateY(-4px);
}
.page-products .card__icon {
  color: var(--color-accent);
  margin-bottom: calc(var(--space-unit) * 2);
  transition: transform 0.3s ease, color 0.3s ease;
}
.page-products .card--exhibit:hover .card__icon {
  transform: scale(1.1) rotate(-4deg);
  color: var(--color-highlight);
}
.page-products .card__title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-neutral-light);
  margin-bottom: calc(var(--space-unit) * 1.5);
  display: flex;
  align-items: center;
  gap: var(--space-unit);
  flex-wrap: wrap;
}
.page-products .card__title .badge {
  font-style: normal;
  font-weight: 600;
  font-size: 0.65rem;
  vertical-align: middle;
}
.page-products .card__text {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: calc(var(--space-unit) * 3);
  flex: 1;
}
.page-products .card__detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease, margin 0.3s ease, opacity 0.3s ease;
  opacity: 0;
  margin-top: 0;
}
.page-products .card--exhibit[data-interact="expand"]:focus-within .card__detail,
.page-products .card--exhibit[data-interact="expand"]:hover .card__detail {
  max-height: 480px;
  opacity: 1;
  margin-top: calc(var(--space-unit) * 3);
}
.page-products .card__img {
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 2px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  object-fit: cover;
  display: block;
}
.page-products .card__caption {
  display: block;
  margin-top: calc(var(--space-unit) * 0.75);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  font-style: italic;
}
.page-products .card__footnote {
  font-size: 0.7rem;
  color: var(--color-accent-light);
  opacity: 0.7;
  margin-top: calc(var(--space-unit) * 2);
  display: block;
  text-align: right;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: calc(var(--space-unit) * 1);
  transition: opacity 0.3s;
}
.page-products .card--exhibit:hover .card__footnote {
  opacity: 1;
}

/* ===== 如何获取 ===== */
.page-products .section-access {
  padding-top: calc(var(--space-unit) * 6);
  padding-bottom: calc(var(--space-unit) * 6);
  border-top: 2px solid var(--color-secondary);
}
.page-products .access__inner {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space-unit) * 6);
  align-items: center;
}
.page-products .access__text {
  flex: 1 1 50%;
  min-width: 280px;
}
.page-products .access__desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: calc(var(--space-unit) * 4);
  max-width: 560px;
}
.page-products .access__steps {
  list-style: none;
  padding: 0;
  margin: 0 0 calc(var(--space-unit) * 4) 0;
  display: flex;
  flex-direction: column;
  gap: calc(var(--space-unit) * 2.5);
}
.page-products .access__step {
  display: flex;
  align-items: center;
  gap: calc(var(--space-unit) * 2.5);
  font-size: 0.95rem;
  color: rgba(255,255,255,0.8);
}
.page-products .access__step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-secondary);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
  box-shadow: 0 0 0 2px rgba(76,175,80,0.3);
}
.page-products .access__cta {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space-unit) * 2);
  margin-top: calc(var(--space-unit) * 2);
}
.page-products .access__visual {
  flex: 1 1 38%;
  min-width: 240px;
}
.page-products .access__img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border: var(--border-width) solid var(--color-secondary);
  box-shadow: var(--shadow-strong);
  border-radius: var(--radius);
  display: block;
  object-fit: cover;
}
.page-products .access__img-caption {
  display: block;
  margin-top: calc(var(--space-unit) * 1.5);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  font-style: italic;
  text-align: right;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding-bottom: calc(var(--space-unit) * 0.5);
}

/* ===== 背景装饰 ===== */
.page-products .page-products__bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}
.page-products .page-products__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.08;
  filter: grayscale(0.6) contrast(1.2);
}

/* ===== 按钮样式 ===== */
.page-products .btn {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--space-unit) * 1.5);
  padding: calc(var(--space-unit) * 2) calc(var(--space-unit) * 5);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all 0.25s ease;
  border: var(--border-width) solid transparent;
  cursor: pointer;
}
.page-products .btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.page-products .btn-primary:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
  box-shadow: 0 0 0 3px rgba(229,57,53,0.3);
}
.page-products .btn-outline {
  background: transparent;
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}
.page-products .btn-outline:hover {
  background: rgba(76,175,80,0.15);
  box-shadow: 0 0 0 3px rgba(76,175,80,0.2);
}

/* ===== 通用容器 ===== */
.page-products .container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: calc(var(--space-unit) * 3);
  padding-right: calc(var(--space-unit) * 3);
}

/* ===== 章节标题 ===== */
.page-products .section-title {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-neutral-light);
  margin: 0 0 calc(var(--space-unit) * 1.5) 0;
  position: relative;
  display: inline-block;
}
.page-products .section-title::after {
  content: '';
  display: block;
  width: 60%;
  height: 4px;
  background: var(--color-accent);
  margin-top: calc(var(--space-unit) * 1);
  border-radius: 2px;
}

/* ===== 徽标 ===== */
.page-products .badge {
  display: inline-block;
  padding: calc(var(--space-unit) * 0.4) calc(var(--space-unit) * 1.5);
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  line-height: 1.4;
}
.page-products .badge--accent {
  background: rgba(229,57,53,0.2);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}
.page-products .badge--highlight {
  background: rgba(255,215,0,0.2);
  color: var(--color-highlight);
  border: 1px solid var(--color-highlight);
}
.page-products .badge--secondary {
  background: rgba(76,175,80,0.2);
  color: var(--color-secondary);
  border: 1px solid var(--color-secondary);
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .page-products .section-overview {
    flex-direction: column;
    padding-top: calc(var(--space-unit) * 3);
    padding-bottom: calc(var(--space-unit) * 5);
    gap: calc(var(--space-unit) * 4);
  }
  .page-products .overview__text {
    flex: 1 1 100%;
  }
  .page-products .overview__visual {
    flex: 1 1 100%;
  }
  .page-products .overview__meta {
    justify-content: center;
  }
  .page-products .overview__stat {
    min-width: 80px;
    padding: calc(var(--space-unit) * 1.5) calc(var(--space-unit) * 2);
  }
  .page-products .overview__stat-num {
    font-size: 1.4rem;
  }

  .page-products .highlights__grid {
    grid-template-columns: 1fr;
    gap: calc(var(--space-unit) * 4);
  }

  .page-products .section-highlights {
    padding-top: calc(var(--space-unit) * 4);
    padding-bottom: calc(var(--space-unit) * 5);
  }

  .page-products .access__inner {
    flex-direction: column;
    gap: calc(var(--space-unit) * 4);
  }
  .page-products .access__text {
    flex: 1 1 100%;
  }
  .page-products .access__visual {
    flex: 1 1 100%;
  }
  .page-products .access__steps {
    gap: calc(var(--space-unit) * 2);
  }
  .page-products .access__step {
    font-size: 0.9rem;
  }
  .page-products .access__cta {
    flex-direction: column;
    align-items: stretch;
  }
  .page-products .btn {
    justify-content: center;
  }

  .page-products .section-title {
    font-size: 1.8rem;
  }
  .page-products .section-title::after {
    width: 40%;
  }

  .page-products .card--exhibit {
    padding: calc(var(--space-unit) * 3) calc(var(--space-unit) * 2);
  }
  .page-products .card__title {
    font-size: 1.2rem;
  }

  .page-products .breadcrumb {
    font-size: 0.75rem;
    padding-top: calc(var(--space-unit) * 2);
    padding-bottom: calc(var(--space-unit) * 1.5);
  }
}

@media (max-width: 480px) {
  .page-products .container {
    padding-left: calc(var(--space-unit) * 2);
    padding-right: calc(var(--space-unit) * 2);
  }
  .page-products .section-title {
    font-size: 1.5rem;
  }
  .page-products .overview__desc {
    font-size: 0.95rem;
  }
  .page-products .overview__stat {
    min-width: 70px;
    padding: calc(var(--space-unit) * 1) calc(var(--space-unit) * 1.5);
  }
  .page-products .overview__stat-num {
    font-size: 1.2rem;
  }
}