.page-products {
  --products-hero-skew: rgba(210, 180, 140, 0.28);
  --products-grid-line: rgba(210, 180, 140, 0.08);
  color: var(--clr-ink);
  line-height: 1.7;
  overflow-x: hidden;
}

.page-products .breadcrumb {
  padding-top: var(--space-5);
  padding-bottom: 0;
  font-size: var(--size-small);
  color: var(--clr-stone);
}

.page-products .breadcrumb a {
  color: var(--clr-terracotta);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 2px;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size 0.25s ease;
}

.page-products .breadcrumb a:hover {
  background-size: 100% 2px;
}

.page-products .breadcrumb__sep {
  margin: 0 var(--space-2);
  color: var(--clr-stone);
}

/* ===== 首屏区域 ===== */
.page-products .products-hero {
  padding: var(--space-6) 0 var(--space-7);
  border-bottom: 4px solid var(--clr-terracotta);
  background:
    linear-gradient(135deg, transparent 0%, transparent 58%, var(--products-hero-skew) 58%, var(--products-hero-skew) 100%);
}

.page-products .products-hero__inner {
  display: grid;
  gap: var(--space-5);
}

.page-products .products-hero__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-products .products-hero__eyebrow {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--size-small);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--clr-terracotta);
  text-transform: uppercase;
  border-left: 4px solid var(--clr-loess);
  padding-left: var(--space-3);
  margin-bottom: var(--space-4);
}

.page-products .products-hero__title {
  font-family: var(--font-heading);
  font-size: var(--size-h1);
  font-weight: 900;
  line-height: 1.15;
  color: var(--clr-umber);
  margin-bottom: var(--space-4);
}

.page-products .products-hero__lead {
  font-size: var(--size-base);
  line-height: 1.8;
  color: var(--clr-stone);
  max-width: 62ch;
  margin-bottom: var(--space-5);
}

.page-products .products-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.page-products .products-hero__side {
  position: relative;
  background-color: var(--clr-umber);
  background-image:
    linear-gradient(var(--products-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--products-grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--clr-cream);
  padding: var(--space-6) var(--space-5);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.page-products .products-hero__side::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-left: 64px solid transparent;
  border-top: 64px solid var(--clr-terracotta);
  opacity: 0.9;
}

.page-products .hero-stats {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-3);
}

.page-products .hero-stats__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid rgba(245, 239, 230, 0.15);
}

.page-products .hero-stats__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-products .hero-stats dt {
  font-size: var(--size-small);
  color: rgba(245, 239, 230, 0.7);
  letter-spacing: 0.04em;
}

.page-products .hero-stats dd {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--size-h4);
  color: var(--clr-loess);
  text-align: right;
}

/* ===== 区块通用 ===== */
.page-products .products-section {
  padding: var(--space-7) 0;
}

.page-products .products-section__header {
  margin-bottom: var(--space-6);
  max-width: 720px;
}

.page-products .products-section__header--split {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-products .products-section__kicker {
  font-family: var(--font-heading);
  font-size: var(--size-small);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-terracotta);
  margin-bottom: var(--space-2);
}

.page-products .products-section__title {
  font-family: var(--font-heading);
  font-size: var(--size-h2);
  font-weight: 900;
  line-height: 1.2;
  color: var(--clr-ink);
  margin-bottom: var(--space-3);
}

.page-products .products-section__desc {
  color: var(--clr-stone);
  line-height: 1.75;
  font-size: var(--size-base);
}

.page-products .products-section__note {
  font-size: var(--size-small);
  color: var(--clr-stone);
  line-height: 1.7;
  padding-left: var(--space-4);
  border-left: 3px solid var(--clr-loess);
}

/* ===== 功能矩阵 ===== */
.page-products .function-matrix {
  display: grid;
  gap: var(--space-5);
}

.page-products .function-card {
  background: var(--clr-cream);
  border: 1px solid var(--clr-stone);
  padding: var(--space-5);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.page-products .function-card:hover {
  border-color: var(--clr-terracotta);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.page-products .function-card--featured {
  background:
    linear-gradient(120deg, var(--clr-cream) 65%, rgba(160, 82, 45, 0.08) 100%);
  border-top: 5px solid var(--clr-terracotta);
}

.page-products .function-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-cream);
  flex-shrink: 0;
}

.page-products .function-card__icon svg {
  width: 28px;
  height: 28px;
}

.page-products .function-card__icon--calendar {
  background: var(--clr-terracotta);
}

.page-products .function-card__icon--news {
  background: var(--clr-azure);
}

.page-products .function-card__icon--verify {
  background: var(--clr-moss);
}

.page-products .function-card__icon--download {
  background: var(--clr-stone);
}

.page-products .function-card__title {
  font-family: var(--font-heading);
  font-size: var(--size-h3);
  font-weight: 700;
  color: var(--clr-umber);
  margin-bottom: 0;
}

.page-products .function-card__desc {
  color: var(--clr-ink);
  font-size: var(--size-base);
  line-height: 1.75;
  margin-bottom: 0;
}

.page-products .function-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--clr-terracotta);
  font-weight: 600;
  font-size: var(--size-small);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  width: fit-content;
  transition: border-color 0.25s ease;
}

.page-products .function-card__link:hover {
  border-color: var(--clr-moss);
}

.page-products .function-card__media {
  margin-top: auto;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid rgba(112, 128, 144, 0.2);
  background: var(--clr-loess);
}

.page-products .function-card__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .function-card--wide {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  background:
    linear-gradient(100deg, var(--clr-cream) 70%, rgba(210, 180, 140, 0.25) 100%);
}

.page-products .function-card--wide .function-card__body {
  flex: 1 1 280px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-products .function-card--wide .function-card__btn {
  flex-shrink: 0;
}

/* ===== 资料库规格 ===== */
.page-products .products-section--library {
  background: rgba(210, 180, 140, 0.16);
  border-top: 1px solid rgba(112, 128, 144, 0.2);
  border-bottom: 1px solid rgba(112, 128, 144, 0.2);
}

.page-products .library-specs {
  display: grid;
  gap: var(--space-5);
}

.page-products .library-specs__lead {
  font-size: var(--size-base);
  line-height: 1.8;
  color: var(--clr-ink);
  background: rgba(245, 239, 230, 0.7);
  border-left: 4px solid var(--clr-terracotta);
  padding: var(--space-4) var(--space-5);
  margin: 0;
}

.page-products .library-specs__media {
  background: var(--clr-loess);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.page-products .library-specs__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-products .library-specs__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--clr-stone);
  background: var(--clr-cream);
  align-self: center;
}

.page-products .spec-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-4);
  padding: var(--space-4);
  border-bottom: 1px dashed rgba(112, 128, 144, 0.4);
}

.page-products .spec-row:last-child {
  border-bottom: 0;
}

.page-products .spec-row:nth-child(even) {
  background: rgba(210, 180, 140, 0.12);
}

.page-products .spec-row dt {
  font-weight: 600;
  font-size: var(--size-small);
  color: var(--clr-stone);
  flex-shrink: 0;
}

.page-products .spec-row dd {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--clr-umber);
  text-align: right;
  font-size: var(--size-base);
}

/* ===== 使用指引 ===== */
.page-products .products-section--guide {
  position: relative;
}

.page-products .products-section--guide::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 6px;
  background: linear-gradient(180deg, var(--clr-terracotta), var(--clr-loess));
  opacity: 0.5;
}

.page-products .guide-layout {
  display: grid;
  gap: var(--space-5);
}

.page-products .guide-accordion {
  display: grid;
  gap: var(--space-4);
  align-content: start;
}

.page-products .guide-step {
  background: var(--clr-cream);
  border: 1px solid var(--clr-stone);
  border-left: 4px solid var(--clr-terracotta);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease;
}

.page-products .guide-step:hover {
  box-shadow: var(--shadow-md);
}

.page-products .guide-step__summary {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.page-products .guide-step__summary::-webkit-details-marker {
  display: none;
}

.page-products .guide-step__num {
  font-family: var(--font-heading);
  font-size: var(--size-h3);
  font-weight: 900;
  color: var(--clr-terracotta);
  line-height: 1;
}

.page-products .guide-step__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--size-h4);
  color: var(--clr-umber);
}

.page-products .guide-step__toggle {
  margin-left: auto;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(160, 82, 45, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.page-products .guide-step__toggle::before {
  content: "+";
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--clr-terracotta);
  line-height: 1;
}

.page-products .guide-step[open] .guide-step__toggle::before {
  content: "−";
}

.page-products .guide-step__content {
  padding: 0 var(--space-5 var(--space-5) 5rem;
  color: var(--clr-ink);
  font-size: var(--size-base);
  line-height: 1.8;
}

.page-products .guide-media {
  background: var(--clr-loess);
  border-radius: var(--radius-lg);
  overflow: hidden;
  align-self: stretch;
  min-height: 160px;
  box-shadow: var(--shadow-md);
}

.page-products .guide-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== 版本对比 ===== */
.page-products .products-section--compare {
  background:
    linear-gradient(115deg, transparent 0%, transparent 60%, var(--products-hero-skew) 60%, var(--products-hero-skew) 100%),
    var(--clr-cream);
  border-top: 1px solid rgba(112, 128, 144, 0.2);
  border-bottom: 1px solid rgba(112, 128, 144, 0.2);
}

.page-products .compare-layout {
  display: grid;
  gap: var(--space-5);
}

.page-products .version-compare {
  background: var(--clr-cream);
  border: 1px solid var(--clr-stone);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-5);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.page-products .version-bars {
  display: grid;
  gap: var(--space-6);
}

.page-products .version-bar__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.page-products .version-bar__name {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--clr-ink);
  font-size: var(--size-base);
}

.page-products .version-bar__time {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: var(--size-h4);
  color: var(--clr-umber);
}

.page-products .version-bar__track {
  display: block;
  height: 12px;
  background: rgba(112, 128, 144, 0.22);
  border-radius: 999px;
  overflow: hidden;
}

.page-products .version-bar__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  width: 0;
  transition: width 0.45s ease;
}

.page-products .version-bar:hover .version-bar__fill {
  filter: brightness(0.9);
}

.page-products .version-bar--new .version-bar__fill {
  width: 75%;
  background: linear-gradient(90deg, var(--clr-moss), #7ba428);
}

.page-products .version-bar--old .version-bar__fill {
  width: 83%;
  background: linear-gradient(90deg, var(--clr-stone), #8a9aa8);
}

.page-products .version-bar__note {
  font-size: var(--size-small);
  color: var(--clr-stone);
  margin-top: var(--space-2);
  line-height: 1.5;
}

.page-products .version-compare__delta {
  align-self: flex-start;
  display: inline-block;
  background: var(--clr-moss);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: 999px;
  font-size: var(--size-small);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-products .version-compare__note {
  font-size: var(--size-xs);
  color: var(--clr-stone);
  line-height: 1.6;
  margin-top: auto;
}

.page-products .compare-media {
  background: var(--clr-loess);
  border-radius: var(--radius-lg);
  overflow: hidden;
  align-self: stretch;
  min-height: 120px;
  box-shadow: var(--shadow-md);
}

.page-products .compare-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== 资料库入口 CTA ===== */
.page-products .products-section--cta {
  padding-top: var(--space-6);
}

.page-products .library-cta {
  background: var(--clr-umber);
  color: var(--clr-cream);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  display: grid;
  gap: var(--space-5);
  align-items: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.page-products .library-cta::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-left: 80px solid transparent;
  border-top: 80px solid rgba(160, 82, 45, 0.55);
}

.page-products .library-cta__icon {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(210, 180, 140, 0.14);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid rgba(210, 180, 140, 0.35);
}

.page-products .library-cta__icon img {
  display: block;
  width: 100px;
  height: 100px;
  object-fit: cover;
}

.page-products .library-cta__title {
  font-family: var(--font-heading);
  font-size: var(--size-h3);
  font-weight: 900;
  color: var(--clr-cream);
  margin-bottom: var(--space-2);
}

.page-products .library-cta__text p {
  color: rgba(245, 239, 230, 0.82);
  line-height: 1.75;
  margin-bottom: 0;
  font-size: var(--size-base);
}

.page-products .library-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.page-products .library-cta .btn--ghost {
  border-color: var(--clr-loess);
  color: var(--clr-loess);
}

.page-products .library-cta .btn--ghost:hover {
  background: var(--clr-loess);
  color: var(--clr-umber);
}

/* ===== 媒体查询 ===== */
@media (min-width: 768px) {
  .page-products .products-hero {
    padding-top: var(--space-7);
  }

  .page-products .products-hero__inner {
    grid-template-columns: 1.4fr 0.9fr;
    align-items: stretch;
  }

  .page-products .products-hero__side {
    margin-top: 0;
  }

  .page-products .products-section__header--split {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
    max-width: none;
  }

  .page-products .products-section__header--split .products-section__note {
    max-width: 32ch;
    text-align: left;
  }

  .page-products .function-matrix {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto auto;
  }

  .page-products .function-card--featured {
    grid-row: span 2;
  }

  .page-products .function-card--wide {
    grid-column: 1 / -1;
  }

  .page-products .library-specs {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    align-items: stretch;
  }

  .page-products .library-specs__lead {
    grid-column: 1 / -1;
  }

  .page-products .guide-layout {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: stretch;
  }

  .page-products .guide-accordion {
    align-content: start;
  }

  .page-products .compare-layout {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }

  .page-products .library-cta {
    grid-template-columns: auto 1fr auto;
    gap: var(--space-6);
    padding: var(--space-6);
  }
}

@media (min-width: 1025px) {
  .page-products .products-hero__content {
    padding-right: var(--space-7);
  }

  .page-products .products-hero__lead {
    font-size: 1.0625rem;
  }

  .page-products .products-section {
    padding: var(--space-8) 0;
  }

  .page-products .products-section__title {
    font-size: calc(var(--size-h2) * 1.05);
  }

  .page-products .function-matrix {
    gap: var(--space-6);
  }

  .page-products .library-specs {
    gap: var(--space-7);
  }

  .page-products .version-compare {
    padding: var(--space-7);
  }

  .page-products .library-cta {
    padding: var(--space-7);
  }
}