.page-home {
  --home-rule: var(--border-thin) dotted var(--color-line);
}

/* ---------- 首屏 ---------- */
.page-home .hero-band {
  position: relative;
  overflow: hidden;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: var(--space-6) var(--space-8);
}

.page-home .hero-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle,
    color-mix(in srgb, var(--color-contrast-line) 62%, transparent) var(--border-thin),
    transparent var(--border-thin)
  );
  background-size: var(--space-3) var(--space-3);
  pointer-events: none;
}

.page-home .hero-band__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-6);
}

.page-home .hero-band__coord {
  margin: 0 0 var(--space-3);
  color: var(--color-contrast-accent);
}

.page-home .hero-band__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 1.06;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-home .hero-band__lead {
  margin: 0;
  max-width: 46ch;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent);
}

.page-home .hero-scale {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: var(--space-3) 0 0;
  border-top: var(--border-thin) dotted var(--color-contrast-line);
  display: grid;
  gap: var(--space-3);
}

.page-home .hero-scale__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-contrast-accent);
}

.page-home .hero-scale__num {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1.05;
  color: var(--color-contrast-ink);
  font-variant-numeric: tabular-nums;
}

.page-home .hero-scale__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

/* ---------- 图片容器 ---------- */
.page-home .figure-frame__plot {
  position: relative;
  overflow: hidden;
  background-color: var(--color-surface-deep);
}

.page-home .figure-frame__media {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-home .figure-frame__tint {
  position: absolute;
  inset: 0;
  background-image: var(--overlay-scrim);
  pointer-events: none;
}

.page-home .figure-frame__caption {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

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

.page-home .hero-band__figure .figure-frame__plot {
  aspect-ratio: 16 / 9;
}

.page-home .hero-band__figure .figure-frame__caption {
  color: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent);
}

/* ---------- 四条主线入口 ---------- */
.page-home .lanes__grid {
  position: relative;
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.page-home .lanes__plot {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0.6;
  clip-path: polygon(0 16%, 100% 0, 100% 84%, 0 100%);
  pointer-events: none;
}

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

.page-home .lane {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-3);
  background-color: color-mix(in srgb, var(--color-surface) 92%, transparent);
  border-top: var(--border-thin) solid var(--color-primary);
  color: var(--color-ink);
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.page-home .lane:hover,
.page-home .lane:focus-visible {
  background-color: var(--color-primary-soft);
  border-top-color: var(--color-accent);
}

.page-home .lane__code {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  transition: color 160ms ease;
}

.page-home .lane:hover .lane__code,
.page-home .lane:focus-visible .lane__code {
  color: var(--color-accent);
}

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

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

.page-home .lane__stat {
  margin-top: auto;
  padding-top: var(--space-2);
  border-top: var(--border-thin) dotted var(--color-line);
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-home .lane__stat .num {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

/* ---------- 数据概览 ---------- */
.page-home .scopes__body {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

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

.page-home .scopes__figure .figure-frame__plot {
  aspect-ratio: 4 / 3;
}

.page-home .scopes__caption {
  caption-side: top;
  text-align: left;
  padding-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

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

.page-home .scopes__more a,
.page-home .cadence__foot a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 0.15em;
}

.page-home .scopes__more a:hover,
.page-home .cadence__foot a:hover {
  color: var(--color-accent);
  text-decoration-style: solid;
}

/* ---------- 核对节奏 ---------- */
.page-home .cadence__body {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-home .cadence__ticks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-home .cadence__tick {
  display: grid;
  gap: var(--space-1);
  padding-top: var(--space-3);
  border-top: var(--border-thin) dotted var(--color-line);
}

.page-home .cadence__value {
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.page-home .cadence__name {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

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

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

.page-home .cadence__figure .figure-frame__plot {
  aspect-ratio: 4 / 3;
}

.page-home .cadence__foot {
  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);
}

/* ---------- 阶梯索引 ---------- */
.page-home .shelf__cols {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-home .shelf__col-title {
  margin: 0 0 var(--space-2);
  padding-bottom: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-primary);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

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

.page-home .shelf__list a {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-1) 0;
  border-bottom: var(--border-thin) dotted var(--color-line);
  font-size: var(--text-base);
  color: var(--color-ink);
  text-decoration: none;
  transition: color 160ms ease, border-color 160ms ease;
}

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

.page-home .shelf__list .num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-home .shelf__sign {
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-ink-muted);
  display: grid;
  gap: var(--space-2);
}

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

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

.page-home .shelf__sign-link a {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-decoration: none;
  transition: color 160ms ease;
}

.page-home .shelf__sign-link a:hover,
.page-home .shelf__sign-link a:focus-visible {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 0.15em;
}

/* ---------- 焦点态 ---------- */
.page-home a:focus-visible {
  outline: calc(var(--border-thin) * 2) solid var(--color-focus);
  outline-offset: calc(var(--border-thin) * 2);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .hero-scale {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--gutter);
  }
}

@media (min-width: 720px) {
  .page-home .shelf__cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gutter);
  }
}

@media (min-width: 900px) {
  .page-home .hero-band {
    padding-block: var(--space-8) var(--space-8);
  }

  .page-home .hero-band__inner {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--gutter);
    align-items: end;
  }

  .page-home .hero-band__copy {
    grid-column: 1 / span 7;
  }

  .page-home .hero-band__figure {
    grid-column: 8 / span 5;
  }

  .page-home .lanes__grid {
    grid-template-columns: 1.32fr 1.05fr 1fr 0.86fr;
    gap: var(--gutter);
    align-items: start;
  }

  .page-home .lane {
    min-height: calc(var(--space-8) * 4);
    padding: var(--space-6) var(--space-3) var(--space-4);
  }

  .page-home .lane:nth-child(3) {
    margin-top: var(--space-3);
  }

  .page-home .lane:nth-child(4) {
    margin-top: calc(var(--space-3) * 2);
  }

  .page-home .lane:nth-child(5) {
    margin-top: calc(var(--space-3) * 3);
  }

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

  .page-home .scopes__figure {
    grid-column: 1 / span 4;
  }

  .page-home .scopes__figure .figure-frame__plot {
    aspect-ratio: 3 / 4;
  }

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

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

  .page-home .cadence__ticks {
    grid-column: 1 / span 7;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gutter);
  }

  .page-home .cadence__figure {
    grid-column: 9 / span 4;
  }
}

@media (min-width: 1200px) {
  .page-home .hero-band__copy {
    grid-column: 1 / span 7;
  }

  .page-home .hero-band__figure {
    grid-column: 8 / span 5;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home *,
  .page-home *::before,
  .page-home *::after {
    transition-duration: 0ms !important;
  }
}