.page-home {
  --home-shadow: 7px 7px 0 var(--color-line);
  --home-shadow-deep: 7px 7px 0 var(--color-contrast-line);
  --home-shadow-lift: 9px 9px 0 var(--color-line);
  background: var(--color-surface);
  color: var(--color-ink);
}

/* ---------- 首屏 ---------- */
.page-home .hero-dossier {
  position: relative;
  overflow: hidden;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-top: calc(var(--section-y) * 1.3);
  padding-bottom: var(--section-y);
}

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

.page-home .hero-dossier .deco-dot--a {
  top: 9%;
  right: 5%;
  width: 108px;
  height: 108px;
  border-radius: 50%;
  background: var(--color-primary);
}

.page-home .hero-dossier .deco-bar--a {
  top: 46%;
  right: 12%;
  width: 148px;
  height: 16px;
  background: var(--color-accent);
  transform: rotate(-9deg);
}

.page-home .hero-dossier .deco-square--a {
  top: 60%;
  left: 3%;
  width: 62px;
  height: 62px;
  background: var(--color-highlight);
  border: var(--border-thick) solid var(--color-contrast-line);
  transform: rotate(12deg);
}

.page-home .hero-dossier .deco-notch--a {
  bottom: 4%;
  right: 3%;
  width: 78px;
  height: 78px;
  border-left: var(--border-thick) solid var(--color-contrast-accent);
  border-bottom: var(--border-thick) solid var(--color-contrast-accent);
}

.page-home .hero-dossier__head {
  position: relative;
  z-index: 2;
}

.page-home .hero-dossier__eyebrow {
  color: var(--color-contrast-accent);
}

.page-home .hero-dossier__title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  margin: var(--space-3) 0 0;
  max-width: 14ch;
}

.page-home .hero-dossier__lede {
  max-width: var(--measure);
  margin: var(--space-4) 0 0;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 86%, transparent);
}

/* 四个错落数字 */
.page-home .hero-figures {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.page-home .figure-block {
  position: relative;
  padding: var(--space-3);
  border: var(--border-thick) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
  box-shadow: var(--home-shadow-deep);
}

.page-home .figure-block__label {
  margin: 0;
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
}

.page-home .figure-block__num {
  margin: var(--space-1) 0;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  font-weight: var(--weight-heading);
  font-variant-numeric: tabular-nums;
}

.page-home .figure-block__unit {
  margin: 0;
  font-size: var(--text-sm);
}

.page-home .figure-block--a {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border-color: var(--color-primary);
}

.page-home .figure-block--b {
  background: var(--color-accent);
  color: var(--color-accent-ink);
  border-color: var(--color-accent);
}

.page-home .figure-block--c {
  background: var(--color-primary-soft);
  color: var(--color-ink);
  border-color: var(--color-primary);
  box-shadow: var(--home-shadow);
}

.page-home .figure-block--d {
  background: var(--color-surface);
  color: var(--color-ink);
  border-color: var(--color-accent);
  box-shadow: var(--home-shadow);
}

/* 时间带 */
.page-home .timeline-band {
  position: relative;
  margin-top: var(--space-8);
  padding: var(--space-6) 0 var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-home .timeline-band__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.55;
  mix-blend-mode: luminosity;
  border-radius: var(--radius-md);
}

.page-home .timeline-band__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: var(--overlay-scrim);
  border-radius: var(--radius-md);
}

.page-home .timeline {
  position: relative;
  z-index: 2;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-home .timeline__node {
  position: relative;
  padding: var(--space-4) var(--space-2) var(--space-2);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-contrast-surface) 84%, transparent);
  transition: transform 150ms ease, border-color 150ms ease, background-color 150ms ease;
}

.page-home .timeline__node::before {
  content: "";
  position: absolute;
  top: 0;
  left: var(--space-3);
  width: 14px;
  height: 14px;
  transform: translateY(-50%) rotate(45deg);
  background: var(--color-contrast-accent);
  border: var(--border-thin) solid var(--color-contrast-surface);
}

.page-home .timeline__node--now::before {
  background: var(--color-primary);
}

.page-home .timeline__node:hover,
.page-home .timeline__node:focus-within {
  transform: translateY(-4px);
  border-color: var(--color-contrast-accent);
  background: color-mix(in srgb, var(--color-contrast-surface) 96%, transparent);
}

.page-home .timeline__node:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 3px;
}

.page-home .timeline__round {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-accent);
}

.page-home .timeline__year {
  display: block;
  margin: var(--space-1) 0;
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
  line-height: 1.1;
}

.page-home .timeline__data {
  display: block;
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-contrast-ink) 78%, transparent);
}

.page-home .timeline__pop {
  display: block;
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 150ms ease, max-height 150ms ease;
}

.page-home .timeline__node:hover .timeline__pop,
.page-home .timeline__node:focus-within .timeline__pop {
  opacity: 1;
  max-height: 10em;
}

/* ---------- 最近一轮归档 ---------- */
.page-home .home-latest__head {
  max-width: var(--measure);
}

.page-home .home-latest__lede {
  margin-top: var(--space-3);
}

.page-home .latest-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-home .latest-card {
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border: var(--border-thick) solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--home-shadow);
}

.page-home .index-card__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-home .index-card__title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
}

.page-home .field-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
}

.page-home .field-list .field-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-1) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
}

.page-home .field-list .field-row:last-child {
  border-bottom: 0;
}

.page-home .field-key {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-home .field-val {
  color: var(--color-ink);
}

.page-home .latest-diffs {
  min-width: 0;
}

.page-home .diff-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-home .diff-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-left: calc(var(--border-thick) * 2) solid var(--color-accent);
  border-radius: var(--radius-sm);
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.page-home .diff-item:nth-child(2) {
  border-left-color: var(--color-primary);
}

.page-home .diff-item:nth-child(3) {
  border-left-color: var(--color-contrast-surface);
}

.page-home .diff-item:hover {
  transform: translateX(4px);
  box-shadow: var(--home-shadow);
}

.page-home .diff-item__no {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
}

.page-home .diff-item__title {
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-home .diff-item__meta {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

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

.page-home .latest-diffs__foot a {
  color: var(--color-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ---------- 工具类型入口 ---------- */
.page-home .tools-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-home .tool-tags {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-home .tool-tag {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  box-shadow: 4px 4px 0 var(--color-line);
  transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.page-home .tool-tag:hover {
  transform: translate(-2px, -2px);
  border-color: var(--color-primary);
  box-shadow: 6px 6px 0 var(--color-primary);
}

.page-home .tool-tag__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  color: var(--color-ink);
}

.page-home .tool-tag__meta {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  font-variant-numeric: tabular-nums;
}

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

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

.page-home .frame {
  display: block;
  padding: var(--space-2);
  background: var(--color-surface);
  border: var(--border-thick) solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--home-shadow);
}

.page-home .frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  background: var(--color-surface-deep);
}

.page-home .frame__caption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

/* ---------- 文档类别 ---------- */
.page-home .docs-head {
  max-width: var(--measure);
}

.page-home .docs-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

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

.page-home .doc-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-3) var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-home .doc-item__no {
  grid-row: span 3;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
}

.page-home .doc-item__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  color: var(--color-ink);
}

.page-home .doc-item__count {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.page-home .doc-item__note {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-home .doc-item--lead {
  margin-bottom: var(--space-2);
  padding: var(--space-3);
  background: var(--color-primary-soft);
  border: var(--border-thick) solid var(--color-primary);
  border-radius: var(--radius-md);
}

.page-home .doc-item--lead .doc-item__name {
  font-size: var(--text-xl);
}

.page-home .docs-aside {
  align-self: start;
}

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

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

.page-home .docs-aside__link {
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
}

.page-home .docs-aside__link a {
  color: var(--color-accent);
  font-weight: var(--weight-heading);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

/* ---------- 更新节奏 ---------- */
.page-home .cadence-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

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

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

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

.page-home .rule-item__body {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-home .rule-item__title {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  color: var(--color-ink);
  margin-bottom: var(--space-1);
}

.page-home .cadence-figure {
  margin: 0;
  align-self: start;
}

/* ---------- 查阅路径（深色收束） ---------- */
.page-home .home-paths {
  color: var(--color-contrast-ink);
}

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

.page-home .paths-head {
  max-width: var(--measure);
}

.page-home .paths-head h2 {
  color: var(--color-contrast-ink);
}

.page-home .paths-head__lede {
  margin: var(--space-3) 0 0;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 88%, transparent);
}

.page-home .path-list {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-home .path-item {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-contrast-surface) 72%, transparent);
  transition: transform 150ms ease, border-color 150ms ease;
}

.page-home .path-item:hover {
  transform: translateY(-4px);
  border-color: var(--color-contrast-accent);
}

.page-home .path-item__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  color: var(--color-contrast-ink);
}

.page-home .path-item__body {
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
}

.page-home .path-item__link {
  display: inline-block;
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-contrast-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.page-home .path-item__link:focus-visible,
.page-home .home-ports a:focus-visible,
.page-home .docs-aside__link a:focus-visible,
.page-home .latest-diffs__foot a:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-home .home-ports {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-home .home-ports__lead {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-contrast-accent);
}

.page-home .port-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
}

.page-home .port-list a {
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  border-bottom: var(--border-thin) solid var(--color-contrast-accent);
  padding-bottom: 2px;
}

.page-home .port-list a:hover {
  color: var(--color-contrast-accent);
}

/* ---------- 响应式 ---------- */
@media (max-width: 759px) {
  .page-home .hero-dossier .deco-bar--a,
  .page-home .hero-dossier .deco-square--a {
    display: none;
  }

  .page-home .timeline__pop {
    opacity: 1;
    max-height: none;
  }

  .page-home .hero-dossier__title {
    max-width: 100%;
  }

  .page-home .doc-item,
  .page-home .diff-item {
    grid-template-columns: 1fr;
  }

  .page-home .doc-item__no,
  .page-home .diff-item__no {
    grid-row: auto;
  }
}

@media (min-width: 760px) {
  .page-home .hero-figures {
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
    align-items: start;
    margin-top: calc(var(--space-8) + var(--space-4));
  }

  .page-home .figure-block--a {
    grid-column: 1 / span 5;
  }

  .page-home .figure-block--b {
    grid-column: 7 / span 5;
    margin-top: var(--space-6);
  }

  .page-home .figure-block--c {
    grid-column: 2 / span 5;
    margin-top: calc(var(--space-3) * -1.2);
  }

  .page-home .figure-block--d {
    grid-column: 8 / span 5;
    margin-top: calc(var(--space-3) * 1.3);
  }

  .page-home .timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--gutter);
  }

  .page-home .path-list {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gutter);
  }

  .page-home .tool-tags {
    gap: var(--space-3);
  }
}

@media (min-width: 900px) {
  .page-home .latest-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-8);
  }

  .page-home .cadence-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--space-8);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-home .tools-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-home .docs-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--space-8);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .timeline__node,
  .page-home .tool-tag,
  .page-home .diff-item,
  .page-home .path-item,
  .page-home .timeline__pop {
    transition: none;
  }

  .page-home .timeline__node:hover,
  .page-home .timeline__node:focus-within,
  .page-home .tool-tag:hover,
  .page-home .diff-item:hover,
  .page-home .path-item:hover {
    transform: none;
  }
}