.page-home {
  --home-hero-pad-top: var(--space-4);
  --home-hero-pad-bottom: var(--space-8);
  --home-toc-width: 156px;
}

/* ---------- 页面上下文行 ---------- */
.page-home .home-context {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding-block: var(--space-4) var(--space-2);
}

.page-home .home-context-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--home-hero-pad-top) var(--home-hero-pad-bottom);
}

.page-home .home-hero-blocks {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-home .home-hero-block {
  position: absolute;
  display: block;
}

.page-home .home-hero-block--deep {
  top: 0;
  right: -18%;
  width: 74%;
  height: 34%;
  background: var(--color-contrast-surface);
}

.page-home .home-hero-block--soft {
  bottom: 2%;
  left: -18%;
  width: 70%;
  height: 26%;
  background: var(--color-primary-soft);
}

.page-home .home-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

.page-home .home-hero-eyebrow {
  margin: 0;
}

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

.page-home .home-hero-lede {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-home .home-hero-hint {
  margin: var(--space-3) 0 0;
  max-width: 46ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-primary);
}

.page-home .home-hero-figure {
  margin: 0;
}

.page-home .home-hero-frame {
  aspect-ratio: 5 / 3;
}

.page-home .home-hero-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-home .home-hero-stats {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-3);
}

.page-home .home-stat-link {
  display: block;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  text-decoration: none;
  color: inherit;
}

.page-home .home-stat-link:hover .home-stat-num,
.page-home .home-stat-link:focus-visible .home-stat-num {
  color: var(--color-accent);
}

.page-home .home-stat-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

.page-home .home-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  transition: color 180ms ease;
}

.page-home .home-stat--accent .home-stat-num {
  color: var(--color-accent);
}

.page-home .home-stat-unit {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-base);
  color: var(--color-ink);
}

.page-home .home-stat-note {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: var(--color-ink-muted);
}

/* ---------- 内容边界 ---------- */
.page-home .home-scope-title {
  margin-top: var(--space-2);
}

.page-home .home-scope-lede {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-home .home-scope-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-home .home-scope-sub {
  margin: 0 0 var(--space-3);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-home .home-scope-col--in .home-scope-sub {
  color: var(--color-primary);
}

.page-home .home-scope-col--out .home-scope-sub {
  color: var(--color-ink-muted);
}

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

.page-home .home-scope-list li {
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-line);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .home-scope-col--in .home-scope-list li {
  border-left-color: var(--color-primary);
}

.page-home .home-scope-note {
  margin: var(--space-6) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .home-scope-note a {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-home .home-scope-note a:hover,
.page-home .home-scope-note a:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- 三层骨架 ---------- */
.page-home .home-skeleton-title {
  margin-top: var(--space-2);
}

.page-home .home-skeleton-lede {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-home .home-skeleton-list {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
}

.page-home .home-skeleton-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-skeleton-index {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-home .home-skeleton-body {
  min-width: 0;
}

.page-home .home-skeleton-name {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-home .home-skeleton-body p {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .home-skeleton-link {
  margin: 0;
}

.page-home .home-skeleton-link a {
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-home .home-skeleton-link a:hover,
.page-home .home-skeleton-link a:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.page-home .home-skeleton-figure {
  margin: var(--space-6) 0 0;
}

.page-home .home-figure-wide {
  aspect-ratio: 2 / 1;
}

.page-home .home-figure-wide img,
.page-home .home-figure-banner img,
.page-home .home-figure-tall img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-home .home-skeleton-figure .figure-caption {
  margin-top: var(--space-2);
  max-width: 46ch;
}

/* ---------- 批次刻度 ---------- */
.page-home .home-batch-title {
  margin-top: var(--space-2);
}

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

.page-home .home-batch-banner {
  margin: var(--space-6) 0 0;
}

.page-home .home-figure-banner {
  aspect-ratio: 5 / 2;
}

.page-home .home-batch-scale {
  margin-top: var(--space-6);
  overflow-x: auto;
  padding-bottom: var(--space-2);
}

.page-home .home-batch-svg {
  display: block;
  width: 100%;
  min-width: 620px;
  height: auto;
}

.page-home .home-tick {
  fill: var(--color-ink-muted);
  opacity: 0.45;
}

.page-home .home-tick--recent {
  fill: var(--color-accent);
  opacity: 1;
}

.page-home .home-batch-axis {
  stroke: var(--color-ink-muted);
  stroke-width: 1;
  opacity: 0.4;
}

.page-home .home-batch-scale-note {
  margin: var(--space-2) 0 0;
  max-width: 52ch;
  font-size: var(--text-sm);
  line-height: 1.7;
  letter-spacing: 0.05em;
  color: var(--color-ink-muted);
}

.page-home .home-batch-detail {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-batch-detail-figure {
  margin: 0;
}

.page-home .home-figure-tall {
  aspect-ratio: 3 / 2;
}

.page-home .home-batch-detail-name {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-home .home-batch-detail-body p {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .home-batch-detail-link {
  margin: var(--space-3) 0 0;
}

.page-home .home-batch-detail-link a {
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-home .home-batch-detail-link a:hover,
.page-home .home-batch-detail-link a:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- 栏目入口 ---------- */
.page-home .home-channels-title {
  margin-top: var(--space-2);
}

.page-home .home-channels-lede {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-home .home-channel-list {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

.page-home .home-channel {
  min-width: 0;
}

.page-home .home-channel-link {
  display: block;
  height: 100%;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  text-decoration: none;
  color: inherit;
}

.page-home .home-channel-link:hover,
.page-home .home-channel-link:focus-visible {
  border-top-color: var(--color-accent);
}

.page-home .home-channel-link:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

.page-home .home-channel-index {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.page-home .home-channel-name {
  margin: var(--space-2) 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

/* ---------- 进站顺序 ---------- */
.page-home .home-start-title {
  margin-top: var(--space-2);
}

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

.page-home .home-start-track {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  counter-reset: none;
}

.page-home .home-start-item {
  position: relative;
  min-width: 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .home-start-index {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

.page-home .home-start-name {
  margin: var(--space-3) 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-home .home-start-item p {
  margin: 0 0 var(--space-2);
  max-width: 44ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-home .home-start-link {
  margin: 0;
}

.page-home .home-start-link a {
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-home .home-start-link a:hover,
.page-home .home-start-link a:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- 章节目录 ---------- */
.page-home .home-toc {
  margin-top: var(--space-8);
}

/* ---------- 中等宽度 ---------- */
@media (min-width: 720px) {
  .page-home .home-hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6) var(--space-4);
  }

  .page-home .home-skeleton-item {
    grid-template-columns: 96px minmax(0, 1fr);
    column-gap: var(--space-4);
  }

  .page-home .home-scope-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-8);
  }

  .page-home .home-channel-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .page-home .home-batch-detail {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: var(--space-6);
    align-items: start;
  }

  .page-home .home-start-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
  }
}

/* ---------- 桌面宽度 ---------- */
@media (min-width: 900px) {
  .page-home {
    --home-hero-pad-top: var(--space-6);
    --home-hero-pad-bottom: var(--section-y);
  }

  .page-home .home-hero-block--deep {
    right: -12%;
    width: 56%;
    height: 42%;
  }

  .page-home .home-hero-block--soft {
    bottom: 6%;
    left: -12%;
    width: 48%;
    height: 24%;
  }

  .page-home .home-hero-inner {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    row-gap: var(--space-6);
  }

  .page-home .home-hero-eyebrow {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .page-home .home-hero-title {
    grid-column: 1 / 8;
    grid-row: 2;
  }

  .page-home .home-hero-lede-wrap {
    grid-column: 1 / 7;
    grid-row: 3;
    align-self: start;
  }

  .page-home .home-hero-figure {
    grid-column: 8 / 13;
    grid-row: 2 / 4;
    align-self: start;
  }

  .page-home .home-hero-stats {
    grid-column: 1 / -1;
    grid-row: 4;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-6);
  }

  .page-home .home-channel-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-8) var(--space-6);
  }

  .page-home .home-channel:nth-child(3n + 2) {
    transform: translateY(34px);
  }

  .page-home .home-skeleton-figure {
    margin-top: var(--space-8);
  }
}

/* ---------- 大屏侧边目录 ---------- */
@media (min-width: 1500px) {
  .page-home .home-toc {
    position: fixed;
    top: 38vh;
    right: max(16px, calc((100vw - var(--container)) / 2 - 200px));
    width: var(--home-toc-width);
    margin-top: 0;
    z-index: 5;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .home-stat-num,
  .page-home .home-channel-link,
  .page-home .home-skeleton-link a {
    transition: none;
  }

  .page-home .home-channel:nth-child(3n + 2) {
    transform: none;
  }
}