.page-home {
  --home-rule: color-mix(in srgb, var(--color-ink) 22%, transparent);
  --home-contrast-soft: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
  --home-contrast-faint: color-mix(in srgb, var(--color-contrast-ink) 54%, transparent);
  --home-gap-half: calc(var(--space-1) / 2);
}

.page-home a:focus-visible,
.page-home button:focus-visible {
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: var(--home-gap-half);
}

.page-home .section--contrast a:focus-visible,
.page-home .section--contrast button:focus-visible {
  outline-color: var(--color-contrast-accent);
}

.page-home .eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-home .section--contrast .eyebrow {
  color: var(--color-contrast-accent);
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  padding-block: var(--space-8) var(--space-6);
}

.page-home .hero__inner {
  display: grid;
  gap: var(--space-4);
}

.page-home .hero__eyebrow {
  margin: 0;
}

.page-home .hero__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 1.02;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  max-width: 22ch;
}

.page-home .hero__lede {
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--home-contrast-soft);
  max-width: var(--measure);
}

.page-home .hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-3);
  margin-top: var(--space-2);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-home .hstat {
  display: grid;
  gap: var(--home-gap-half);
  min-width: 0;
}

.page-home .hstat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--color-contrast-accent);
}

.page-home .hstat__label {
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
}

.page-home .hstat__unit {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--home-contrast-faint);
}

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

.page-home .hero__figure .media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-contrast-surface);
  aspect-ratio: 16 / 9;
}

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

.page-home .figure-caption {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  margin-top: var(--space-1);
}

.page-home .section--contrast .hero__figure .figure-caption {
  color: var(--home-contrast-faint);
}

.page-home .figure--overlay .figure-caption {
  margin-top: 0;
}

/* ---------- 赛季滑轨 ---------- */
.page-home .rail-head {
  max-width: var(--measure);
}

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

.page-home .rail-head__lede {
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-home .rail-track {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0 0 var(--space-2);
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(calc(var(--space-8) * 4), 80%);
  gap: var(--space-3);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-home .season-card {
  scroll-snap-align: start;
  display: grid;
  gap: var(--space-1);
  align-content: start;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  border-top: var(--space-1) solid var(--color-line);
  min-width: 0;
}

.page-home .season-card--current {
  background: var(--color-primary-soft);
  border-top-color: var(--color-accent);
}

.page-home .season-card__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xl);
  line-height: 1.1;
  color: var(--color-primary);
}

.page-home .season-card__stage {
  margin: var(--space-1) 0 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-home .season-card__focus {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-home .rail-hint {
  margin: var(--space-4) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-home .rail-hint a {
  color: var(--color-primary);
}

/* ---------- 档案分组 ---------- */
.page-home .archive-head {
  max-width: var(--measure);
}

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

.page-home .archive-head .lede {
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

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

.page-home .group {
  display: grid;
  gap: var(--space-2);
  align-content: start;
  padding-inline-start: var(--space-3);
  border-inline-start: var(--space-1) solid var(--color-line);
  min-width: 0;
}

.page-home .group--lead {
  border-inline-start-color: var(--color-accent);
}

.page-home .group__figure {
  margin: 0 0 var(--space-2);
}

.page-home .group__figure .media {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-surface-deep);
  aspect-ratio: 3 / 2;
}

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

.page-home .group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-home .group__text {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink);
}

.page-home .group__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

.page-home .group__link {
  justify-self: start;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid currentColor;
  padding-bottom: var(--home-gap-half);
}

.page-home .group__link:hover {
  color: var(--color-accent);
}

/* ---------- 最新轮次 ---------- */
.page-home .round__title {
  margin: var(--space-2) 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-home .round__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--home-contrast-faint);
}

.page-home .round__segmented {
  margin-top: var(--space-4);
}

.page-home .round .segmented {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-home .round .segmented__btn {
  appearance: none;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-contrast-line);
  background: transparent;
  color: var(--home-contrast-soft);
  cursor: pointer;
}

.page-home .round .segmented__btn:hover {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-ink);
}

.page-home .round .segmented__btn[aria-selected="true"] {
  background: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

.page-home .summary-panel {
  margin-top: var(--space-4);
}

.page-home .summary-grid {
  display: grid;
  gap: var(--space-3);
}

.page-home .summary-field {
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  min-width: 0;
}

.page-home .summary-key {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--home-contrast-faint);
  margin-bottom: var(--home-gap-half);
}

.page-home .summary-val {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--color-contrast-ink);
}

.page-home .summary-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xl);
  line-height: 1.05;
  color: var(--color-contrast-accent);
}

.page-home .summary-note {
  margin: var(--space-3) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--home-contrast-faint);
  max-width: var(--measure);
}

.page-home .round__foot {
  margin: var(--space-4) 0 0;
}

/* ---------- 前瞻与复盘 ---------- */
.page-home .compare-head {
  max-width: var(--measure);
}

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

.page-home .compare-head .lede {
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

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

.page-home .compare__col {
  padding-top: var(--space-3);
  border-top: var(--space-1) solid var(--color-primary);
}

.page-home .compare__col--after {
  border-top-color: var(--color-accent);
}

.page-home .compare__head {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.page-home .compare__title {
  margin: var(--space-1) 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-home .compare-list {
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.page-home .compare-key {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-home .compare-val {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink);
}

.page-home .compare__quote {
  margin: var(--space-6) 0 0;
  max-width: var(--measure);
}

/* ---------- 口径与更新 ---------- */
.page-home .standards__inner {
  display: grid;
  gap: var(--space-6);
}

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

.page-home .standards__body .prose {
  margin: 0 0 var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-home .standards__body .prose a {
  color: var(--color-primary);
}

.page-home .checkpoint-list {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
}

.page-home .checkpoint {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding-block: var(--space-3);
  border-top: var(--border-thin) solid var(--home-rule);
}

.page-home .checkpoint__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xl);
  line-height: 1.1;
  color: var(--color-primary);
}

.page-home .checkpoint__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-home .checkpoint__text {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-home .standards__figure {
  margin: 0;
}

.page-home .standards__figure .media {
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  aspect-ratio: 12 / 7;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-home .summary-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .hero__stats {
    gap: var(--space-4);
  }
}

@media (min-width: 900px) {
  .page-home .hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .rail-track {
    grid-auto-flow: row;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    overflow: visible;
    padding-bottom: 0;
  }

  .page-home .group-list {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6) var(--gutter);
    align-items: start;
  }

  .page-home .group--a {
    grid-column: 1 / span 7;
  }

  .page-home .group--b {
    grid-column: 8 / span 5;
  }

  .page-home .group--c {
    grid-column: 1 / span 5;
  }

  .page-home .group--d {
    grid-column: 6 / span 7;
  }

  .page-home .compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-home .standards__figure {
    position: sticky;
    top: var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .rail-track {
    scroll-behavior: auto;
  }

  .page-home * {
    animation: none;
    transition: none;
  }
}