.page-home {
  --home-glow: color-mix(in srgb, var(--color-contrast-accent) 26%, transparent);
  --home-hairline: color-mix(in srgb, var(--color-contrast-line) 82%, transparent);
  --home-warm-card: color-mix(in srgb, var(--color-surface) 76%, transparent);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  margin: var(--space-3) auto 0;
  width: min(calc(100% - var(--space-3)), calc(var(--container) + var(--space-8) * 4));
  border-radius: var(--radius-lg);
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  overflow: hidden;
  isolation: isolate;
}

.page-home .hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-home .hero-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.38;
}

.page-home .hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(62% 58% at 76% 16%, var(--home-glow) 0%, transparent 74%),
    linear-gradient(180deg,
      color-mix(in srgb, var(--color-contrast-surface) 44%, transparent) 0%,
      var(--color-contrast-surface) 88%);
}

.page-home .hero-inner {
  position: relative;
  z-index: 1;
  padding-block: var(--space-6) var(--space-4);
}

.page-home .hero-context {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-6);
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 68%, transparent);
}

.page-home .hero-split {
  display: grid;
  gap: var(--space-6);
}

.page-home .hero-split > * {
  min-width: 0;
}

.page-home .rail-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: color-mix(in srgb, var(--color-contrast-accent) 88%, transparent);
}

.page-home .rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 var(--space-1);
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-home .rail-item {
  flex: 0 0 auto;
  min-width: calc(var(--space-8) * 3);
  display: grid;
  gap: calc(var(--space-1) / 2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid var(--home-hairline);
  background: color-mix(in srgb, var(--color-contrast-ink) 7%, transparent);
}

.page-home .rail-name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-home .rail-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-home .hero-title {
  margin: 0 0 var(--space-3);
  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 .hero-title-mark {
  display: block;
  color: var(--color-contrast-accent);
}

.page-home .hero-lede {
  margin: 0 0 var(--space-6);
  max-width: var(--measure);
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 80%, transparent);
}

.page-home .stat-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-4);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--home-hairline);
}

.page-home .stat-group .stat-figure {
  display: grid;
  gap: calc(var(--space-1) / 2);
  align-content: start;
}

.page-home .stat-group .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-accent);
  text-shadow: 0 0 var(--space-4) var(--home-glow);
}

.page-home .stat-group .stat-label {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
}

/* ---------- 七项分类 ---------- */
.page-home .cat-layout {
  display: grid;
  gap: var(--space-6);
}

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

.page-home .cat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-home .cat-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 24%, transparent);
  background: var(--home-warm-card);
  text-decoration: none;
  color: var(--color-ink);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.page-home .cat-link:hover,
.page-home .cat-link:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 calc(var(--border-thin) * 2) color-mix(in srgb, var(--color-primary) 20%, transparent), var(--shadow-1);
  transform: translateY(calc(var(--space-1) * -0.25));
}

.page-home .cat-link--static {
  cursor: default;
}

.page-home .cat-link--static:hover {
  border-color: color-mix(in srgb, var(--color-primary) 24%, transparent);
  box-shadow: none;
  transform: none;
}

.page-home .cat-idx {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-home .cat-body {
  display: grid;
  gap: calc(var(--space-1) / 4);
  min-width: 0;
}

.page-home .cat-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-home .cat-note {
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-ink-soft);
}

.page-home .cat-count {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
  white-space: nowrap;
}

/* ---------- 阶段时间轴 ---------- */
.page-home .phase-track {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface-alt);
  padding: var(--space-4) var(--space-3);
}

.page-home .phase-track::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--color-surface-alt) 74%, transparent) 0%,
    var(--color-surface-alt) 94%);
  pointer-events: none;
}

.page-home .phase-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-home .phase-list {
  position: relative;
  z-index: 2;
  display: grid;
  gap: var(--space-2);
}

.page-home .phase-panel {
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--color-line);
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-home .phase-panel[open] {
  border-color: color-mix(in srgb, var(--color-accent) 50%, transparent);
  box-shadow: var(--shadow-1);
}

.page-home .phase-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-home .phase-summary::-webkit-details-marker {
  display: none;
}

.page-home .phase-dot {
  width: calc(var(--space-2) * 0.62);
  height: calc(var(--space-2) * 0.62);
  border-radius: var(--radius-pill);
  border: calc(var(--border-thin) * 2) solid var(--color-ink-muted);
  background: transparent;
  transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-home .phase-panel[open] .phase-dot {
  background: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
  box-shadow: 0 0 0 calc(var(--space-1) / 2) color-mix(in srgb, var(--color-contrast-accent) 30%, transparent);
}

.page-home .phase-meta {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-body);
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.page-home .phase-body {
  padding: 0 var(--space-3) var(--space-3) var(--space-6);
}

.page-home .phase-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 .phase-body p:last-child {
  margin-bottom: 0;
}

/* ---------- 重点栏目 ---------- */
.page-home .focus-flow {
  display: grid;
  gap: var(--space-4);
}

.page-home .focus-block {
  display: grid;
  gap: var(--space-2);
  align-content: start;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--color-line);
  border-top-width: calc(var(--border-thin) * 3);
  border-top-color: var(--color-primary);
  background: var(--color-surface-alt);
}

.page-home .focus-block--b {
  background: var(--color-primary-soft);
  border-top-color: var(--color-accent);
}

.page-home .focus-block--c {
  background: var(--color-surface-deep);
  border-top-color: var(--color-ink-muted);
}

.page-home .focus-idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

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

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

.page-home .focus-text a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: calc(var(--space-1) / 3);
}

.page-home .focus-text a:hover {
  color: var(--color-primary);
}

.page-home .focus-stat {
  margin: 0;
  padding-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-home .focus-stat .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-home .focus-block .btn {
  justify-self: start;
  margin-top: calc(var(--space-1) / 2);
}

/* ---------- 查档与联系 ---------- */
.page-home .find-layout {
  display: grid;
  gap: var(--space-6);
}

.page-home .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-home .step-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
}

.page-home .step-idx {
  display: grid;
  place-items: center;
  width: calc(var(--space-3) + var(--space-1));
  height: calc(var(--space-3) + var(--space-1));
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.page-home .step-name {
  margin: 0 0 calc(var(--space-1) / 2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

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

.page-home .find-note {
  margin: var(--space-3) 0 0;
  padding-left: var(--space-3);
  border-left: calc(var(--border-thin) * 2) solid var(--color-accent);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-home .find-side {
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.page-home .find-side .figure {
  margin: 0;
}

.page-home .contact-card {
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

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

.page-home .contact-list {
  margin: 0;
  display: grid;
  gap: calc(var(--space-1) / 2);
}

.page-home .contact-list dt {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: color-mix(in srgb, var(--color-primary-ink) 74%, transparent);
}

.page-home .contact-list dd {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--color-primary-ink);
  word-break: break-word;
}

.page-home .contact-note {
  margin: var(--space-2) 0 var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-primary-ink) 84%, transparent);
}

.page-home .contact-card .btn-ghost {
  border-color: color-mix(in srgb, var(--color-primary-ink) 58%, transparent);
  color: var(--color-primary-ink);
  background: transparent;
}

.page-home .contact-card .btn-ghost:hover {
  background: color-mix(in srgb, var(--color-primary-ink) 16%, transparent);
}

/* ---------- 归档概览 ---------- */
.page-home .ledger-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.page-home .ledger-metric {
  display: grid;
  gap: calc(var(--space-1) / 2);
  align-content: start;
  padding-top: var(--space-3);
  border-top: calc(var(--border-thin) * 2) solid var(--color-line);
}

.page-home .lm-num {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-home .lm-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-home .lm-note {
  font-size: var(--text-xs);
  line-height: 1.65;
  color: var(--color-ink-muted);
}

.page-home .ledger-split {
  margin-top: var(--space-6);
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
}

.page-home .ledger-split-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-home .ledger-split-title .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink-muted);
}

.page-home .ledger-bar {
  display: flex;
  gap: calc(var(--border-thin) * 2);
  height: var(--space-2);
  border-radius: var(--radius-pill);
  overflow: hidden;
  background: var(--color-line);
}

.page-home .ledger-seg {
  --seg-w: 0%;
  display: block;
  width: var(--seg-w);
  height: 100%;
}

.page-home .ledger-seg--1 { background: var(--color-primary); }
.page-home .ledger-seg--2 { background: color-mix(in srgb, var(--color-primary) 66%, var(--color-accent)); }
.page-home .ledger-seg--3 { background: var(--color-accent); }
.page-home .ledger-seg--4 { background: color-mix(in srgb, var(--color-accent) 70%, var(--color-primary-soft)); }
.page-home .ledger-seg--5 { background: color-mix(in srgb, var(--color-accent) 48%, var(--color-ink-muted)); }
.page-home .ledger-seg--6 { background: var(--color-ink-muted); }
.page-home .ledger-seg--7 { background: var(--color-line); }

.page-home .ledger-legend {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
}

.page-home .ledger-legend li {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink-soft);
}

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

.page-home .page-footnote a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: calc(var(--space-1) / 3);
}

.page-home .page-footnote a:hover {
  color: var(--color-primary);
}

/* ---------- 图片兜底 ---------- */
.page-home .media {
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.page-home .media--wide {
  aspect-ratio: 3 / 2;
}

.page-home .media--square {
  aspect-ratio: 1 / 1;
}

/* ---------- 动效 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .page-home .hero-title {
    animation: home-title-in 0.6s ease-out both;
  }

  .page-home .stat-group .stat-figure {
    animation: home-stat-in 0.6s ease-out both;
  }

  .page-home .stat-group .stat-figure:nth-child(2) { animation-delay: 0.08s; }
  .page-home .stat-group .stat-figure:nth-child(3) { animation-delay: 0.16s; }
  .page-home .stat-group .stat-figure:nth-child(4) { animation-delay: 0.24s; }
}

@keyframes home-title-in {
  from {
    opacity: 0;
    transform: translateY(calc(var(--space-3) * -0.5));
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes home-stat-in {
  from {
    opacity: 0;
    transform: translateY(var(--space-2));
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-home .hero-inner {
    padding-block: var(--space-8) var(--space-6);
  }

  .page-home .stat-group {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .phase-track {
    padding: var(--space-6);
  }

  .page-home .phase-body {
    padding: 0 var(--space-6) var(--space-4) calc(var(--space-6) + var(--space-2) * 0.62 + var(--space-3));
  }
}

@media (min-width: 900px) {
  .page-home .hero-split {
    grid-template-columns: minmax(0, 0.62fr) minmax(0, 1.38fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-home .rail-list {
    flex-direction: column;
    gap: var(--space-2);
    overflow: visible;
    padding: 0;
  }

  .page-home .rail-item {
    position: relative;
    min-width: 0;
    padding: var(--space-2) var(--space-3);
    padding-left: var(--space-4);
    border: 0;
    border-left: calc(var(--border-thin) * 3) solid var(--color-contrast-line);
    border-radius: 0;
    background: transparent;
    transition: border-color 0.3s ease, background-color 0.3s ease;
  }

  .page-home .rail-item--on {
    border-left-color: var(--color-contrast-accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: linear-gradient(90deg, var(--home-glow), transparent 88%);
  }

  .page-home .cat-layout {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-home .cat-figure {
    position: sticky;
    top: var(--space-4);
  }

  .page-home .focus-flow {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .page-home .focus-block:nth-child(1) {
    grid-column: 1 / span 7;
  }

  .page-home .focus-block:nth-child(2) {
    grid-column: 8 / span 5;
    margin-top: var(--space-8);
  }

  .page-home .focus-block:nth-child(3) {
    grid-column: 3 / span 7;
  }

  .page-home .find-layout {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: var(--space-6);
    align-items: start;
  }

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

  .page-home .ledger-split {
    padding: var(--space-4);
  }
}

@media (max-width: 400px) {
  .page-home .cat-link {
    grid-template-columns: auto minmax(0, 1fr);
    row-gap: calc(var(--space-1) / 2);
  }

  .page-home .cat-count {
    grid-column: 2 / -1;
  }

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