.page-home .cover {
  position: relative;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: var(--section-y) var(--space-8);
  overflow: hidden;
}

.page-home .cover-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.page-home .cover-kicker {
  margin: 0;
  font-size: var(--text-sm);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.page-home .cover-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-home .cover-grid {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3) var(--space-4);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-home .cover-rail {
  display: flex;
  align-items: flex-start;
}

.page-home .cover-rail-code {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: var(--text-xs);
  letter-spacing: 0.32em;
  color: var(--color-contrast-accent);
}

.page-home .cover-copy {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.page-home .cover-lede {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-home .cover-index-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-1);
}

.page-home .cover-index-list li {
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-home .cover-index-list a {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding-block: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  text-decoration: none;
  transition: color 0.16s ease, padding-left 0.16s ease;
}

.page-home .cover-index-list a .mono {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-accent);
}

.page-home .cover-index-list a:hover,
.page-home .cover-index-list a:focus-visible {
  color: var(--color-contrast-accent);
  padding-left: var(--space-1);
}

.page-home .cover-index-list a[aria-current="true"] {
  color: var(--color-contrast-accent);
}

.page-home .cover-visual {
  margin: 0;
  overflow: hidden;
  background: var(--color-contrast-line);
}

.page-home .cover-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 1200 / 800;
  max-height: 420px;
  object-fit: cover;
}

.page-home .cover-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-3);
  margin: 0;
  padding: var(--space-4) 0 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
  list-style: none;
}

.page-home .stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.page-home .stat-num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-ink);
}

.page-home .stat-label {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-home .stat-mark {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--color-contrast-accent);
}

/* ---------- 通用区块 ---------- */

.page-home .home-block {
  padding-block: var(--section-y);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .block-head {
  max-width: 72ch;
  margin-bottom: var(--space-6);
}

.page-home .block-title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-home .block-lede {
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .home-figure {
  margin: 0;
  overflow: hidden;
  background: var(--color-surface-deep);
}

.page-home .home-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 01 主题与年度 ---------- */

.page-home .topics-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-home .year-rail {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.page-home .year-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .year-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  position: relative;
  transition: padding-left 0.18s ease;
}

.page-home .year-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-primary);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.18s ease;
}

.page-home .year-item:hover {
  padding-left: var(--space-2);
}

.page-home .year-item:hover::before {
  transform: scaleY(1);
}

.page-home .year-num {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.08em;
  color: var(--color-ink);
}

.page-home .year-item:hover .year-num {
  color: var(--color-primary);
}

.page-home .year-note {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-home .topic-groups {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  min-width: 0;
}

.page-home .topic-group-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-ink);
}

.page-home .topic-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .topic-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: var(--space-1) var(--space-3);
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-home .topic-code {
  grid-column: 1;
  grid-row: 1;
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-primary);
  font-weight: var(--weight-heading);
}

.page-home .topic-name {
  grid-column: 2;
  grid-row: 1;
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-home .topic-name a {
  color: inherit;
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-home .topic-name a:hover,
.page-home .topic-name a:focus-visible {
  color: var(--color-primary);
}

.page-home .topic-tag {
  grid-column: 2;
  grid-row: 2;
  justify-self: start;
}

.page-home .topic-desc {
  grid-column: 2;
  grid-row: 3;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 02 新用户收藏 ---------- */

.page-home .collection {
  background: var(--color-surface-alt);
}

.page-home .collection-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-home .collection-figure {
  order: -1;
}

.page-home .collection-copy {
  min-width: 0;
}

.page-home .collection-copy p {
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: 60ch;
}

.page-home .collection-copy .block-title {
  margin-top: var(--space-2);
}

.page-home .fact-list {
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .fact-list li {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding-block: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-home .fact-list .mono {
  flex: 0 0 auto;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  font-weight: var(--weight-heading);
}

.page-home .collection-copy .btn {
  margin-top: var(--space-4);
}

/* ---------- 03 使用工具栏目 ---------- */

.page-home .tools-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-home .quarter-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .quarter {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: baseline;
  gap: var(--space-2) var(--space-3);
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-home .quarter-code {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.page-home .quarter-count {
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink);
}

.page-home .quarter-desc {
  grid-column: 1 / -1;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 04 版本沿革 ---------- */

.page-home .versions {
  background: var(--color-surface-alt);
}

.page-home .versions-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-home .version-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-ink);
}

.page-home .version-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-1) var(--space-3);
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: background-color 0.16s ease;
}

.page-home .version-row:hover {
  background: var(--color-highlight);
}

.page-home .version-code {
  grid-column: 1;
  grid-row: 1;
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.page-home .version-year {
  grid-column: 2;
  grid-row: 1;
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

.page-home .version-note {
  grid-column: 2;
  grid-row: 2;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .service-panel {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-home .service-figure {
  margin: 0;
  font-size: var(--text-4xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-contrast-ink);
}

.page-home .service-label {
  margin: 0;
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.page-home .service-note {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-home .service-meta {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
  opacity: 0.62;
}

.page-home .service-panel .btn {
  margin-top: var(--space-3);
}

/* ---------- 05 山西归档 ---------- */

.page-home .archive-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-home .archive-copy p {
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  max-width: 62ch;
}

.page-home .archive-copy .block-title {
  margin-top: var(--space-2);
}

.page-home .archive-legal {
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-home .archive-years {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-ink);
  align-content: start;
}

.page-home .archive-year {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding-block: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-home .archive-year .mono {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-home .archive-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .archive-links a {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-home .archive-links a:hover,
.page-home .archive-links a:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-home .cover-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .collection-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: var(--space-8);
  }

  .page-home .collection-figure {
    order: 0;
  }

  .page-home .tools-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: var(--space-8);
  }

  .page-home .archive-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: var(--space-8);
  }

  .page-home .archive-years {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-home .topics-grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
    gap: var(--space-8);
  }

  .page-home .topic-row {
    grid-template-columns: 64px 160px 96px minmax(0, 1fr);
    align-items: baseline;
  }

  .page-home .topic-code {
    grid-column: 1;
    grid-row: 1;
  }

  .page-home .topic-name {
    grid-column: 2;
    grid-row: 1;
  }

  .page-home .topic-tag {
    grid-column: 3;
    grid-row: 1;
  }

  .page-home .topic-desc {
    grid-column: 4;
    grid-row: 1;
    font-size: var(--text-sm);
  }

  .page-home .versions-grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: start;
    gap: var(--space-8);
  }

  .page-home .version-row {
    grid-template-columns: 96px 96px minmax(0, 1fr);
    align-items: baseline;
  }

  .page-home .version-year {
    grid-column: 2;
    grid-row: 1;
  }

  .page-home .version-note {
    grid-column: 3;
    grid-row: 1;
  }

  .page-home .cover-rail-code {
    font-size: var(--text-sm);
  }
}

@media (min-width: 1160px) {
  .page-home .cover-title {
    line-height: 1.08;
  }

  .page-home .cover-visual img {
    max-height: 480px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .year-item,
  .page-home .year-item::before,
  .page-home .version-row,
  .page-home .cover-index-list a,
  .page-home .archive-links a {
    transition: none;
  }
}