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

.page-home h1,
.page-home h2 {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: 0;
}

.page-home img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-home .media {
  margin: 0;
  overflow: hidden;
  background: var(--color-surface-deep);
}

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

.page-home .caption {
  margin: var(--space-2) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--color-ink-muted);
}

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

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

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

/* ---------- 首屏 ---------- */

.page-home .home-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(var(--space-6), 7vw, var(--section-y));
  background: var(--color-surface);
}

.page-home .home-hero__nine {
  position: absolute;
  top: -0.2em;
  right: -0.05em;
  z-index: 0;
  font-family: var(--font-heading);
  font-size: calc(var(--text-display) * 3.6);
  font-weight: var(--weight-heading);
  line-height: 0.78;
  color: var(--color-primary);
  opacity: 0.16;
  pointer-events: none;
  user-select: none;
}

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

.page-home .home-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-home .home-hero__title {
  margin: 0;
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 0.94;
  max-width: 12ch;
}

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

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

/* ---------- 首屏快捷入口 ---------- */

.page-home .home-quick {
  position: relative;
  z-index: 1;
  margin-top: clamp(var(--space-6), 6vw, var(--space-8));
  border-top: calc(var(--border-thick) * 2) solid var(--color-ink);
  background: var(--color-surface);
}

.page-home .quick-index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .quick-index__item {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-home .quick-index__link {
  display: block;
  padding-block: var(--space-3);
  color: var(--color-ink);
  text-decoration: none;
}

.page-home .quick-index__bar {
  display: block;
  width: 28px;
  height: 2px;
  margin-bottom: var(--space-2);
  background: var(--color-primary);
  transition: width 280ms ease, background-color 280ms ease;
}

.page-home .quick-index__link:hover .quick-index__bar,
.page-home .quick-index__link:focus-visible .quick-index__bar {
  width: 100%;
  background: var(--color-accent);
}

.page-home .quick-index__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

.page-home .quick-index__label {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  transition: color 220ms ease;
}

.page-home .quick-index__link:hover .quick-index__label,
.page-home .quick-index__link:focus-visible .quick-index__label {
  color: var(--color-accent);
}

.page-home .quick-index__note {
  display: block;
  margin-top: var(--space-1);
  max-width: 34ch;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

/* ---------- 主题区块框架 ---------- */

.page-home .home-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding-block: clamp(var(--space-6), 7vw, var(--section-y));
}

.page-home .home-rail {
  display: none;
}

.page-home .home-rail .toc-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

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

.page-home .home-rail .toc-list li {
  margin: 0;
}

.page-home .home-rail .toc-list a {
  display: block;
  padding: var(--space-2) 0 var(--space-2) var(--space-3);
  border-left: 2px solid var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color 220ms ease, border-color 220ms ease;
}

.page-home .home-rail .toc-list a:hover,
.page-home .home-rail .toc-list a:focus-visible,
.page-home .home-rail .toc-list a[aria-current="true"] {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
}

.page-home .home-section {
  padding-block: clamp(var(--space-6), 6vw, var(--space-8));
}

.page-home .home-section + .home-section {
  border-top: 3px double var(--color-line);
}

.page-home .home-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  column-gap: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: calc(var(--border-thick) * 2) solid var(--color-ink);
  margin-bottom: var(--space-6);
}

.page-home .home-head__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-home .home-head__title {
  margin: 0;
  font-size: var(--text-2xl);
}

/* ---------- 服务介绍 ---------- */

.page-home .home-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

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

/* ---------- 版本对照（深色区块） ---------- */

.page-home .home-section.home-compare {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: clamp(var(--space-6), 5vw, var(--space-8)) clamp(var(--space-4), 5vw, var(--space-8));
}

.page-home .home-compare .home-head {
  border-bottom-color: var(--color-contrast-ink);
}

.page-home .home-compare .home-head__title {
  color: var(--color-contrast-ink);
}

.page-home .home-compare .home-head__num {
  color: var(--color-contrast-accent);
}

.page-home .home-compare .home-lede {
  color: var(--color-contrast-ink);
}

.page-home .home-compare .caption {
  color: var(--color-contrast-ink);
  opacity: 0.6;
}

.page-home .home-compare .btn {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
  background: transparent;
}

.page-home .home-compare .btn:hover,
.page-home .home-compare .btn:focus-visible {
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
}

.page-home .mirror {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: var(--border-thin) solid var(--color-contrast-line);
}

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

.page-home .mirror__side + .mirror__side {
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-home .mirror__tag {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-contrast-ink);
  opacity: 0.7;
}

.page-home .mirror__tag--accent {
  color: var(--color-contrast-accent);
  opacity: 1;
}

.page-home .mirror__line {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
}

.page-home .mirror__line:last-child {
  margin-bottom: 0;
}

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

/* ---------- 更新公告 ---------- */

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

.page-home .weekly__count {
  padding: var(--space-4);
  background: var(--color-highlight);
}

.page-home .weekly__count-label {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-soft);
}

.page-home .weekly__count-num {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin: 0;
}

.page-home .weekly__count-num .figure-numeral {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  font-weight: var(--weight-body);
  line-height: 0.88;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.page-home .weekly__count-unit {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
}

.page-home .weekly__count-note {
  margin: var(--space-3) 0 0;
  max-width: 34ch;
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-soft);
}

.page-home .weekly__track {
  position: relative;
  margin: 0;
  padding: 0 0 0 var(--space-6);
  list-style: none;
  border-left: calc(var(--border-thick) * 2) solid var(--color-line);
}

.page-home .weekly__node {
  position: relative;
  padding-bottom: var(--space-6);
}

.page-home .weekly__node:last-child {
  padding-bottom: 0;
}

.page-home .weekly__node::before {
  content: "";
  position: absolute;
  left: calc(var(--space-6) * -1);
  top: 0.5em;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  transform: translate(-50%, 0);
}

.page-home .weekly__node-title {
  margin: 0 0 var(--space-1);
  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 .weekly__node-text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: 1.85;
  color: var(--color-ink-soft);
}

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

/* ---------- 三条路径 ---------- */

.page-home .path-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .path-list__item {
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-home .path-list__step {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-home .path-list__text {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-home .path-list__link {
  font-size: var(--text-sm);
  color: var(--color-ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

.page-home .home-path__aside {
  margin: var(--space-6) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.9;
  color: var(--color-ink-muted);
}

.page-home .home-path__aside a {
  color: var(--color-ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

/* ---------- 联系 ---------- */

.page-home .home-contact {
  background: var(--color-surface-alt);
  border-top: calc(var(--border-thick) * 2) solid var(--color-ink);
  padding-block: clamp(var(--space-6), 7vw, var(--section-y));
}

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

.page-home .contact-grid__list {
  margin: 0;
}

.page-home .contact-grid__list dt {
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-home .contact-grid__list dd {
  margin: var(--space-1) 0 var(--space-4);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink);
  word-break: break-word;
}

.page-home .home-contact__legal {
  margin: var(--space-6) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 900px) {
  .page-home .home-hero__inner {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    row-gap: var(--space-3);
    align-items: start;
  }

  .page-home .home-hero__eyebrow { grid-column: 1 / -1; }
  .page-home .home-hero__title { grid-column: 1 / -1; }
  .page-home .home-hero__lede { grid-column: 1 / 7; }
  .page-home .home-hero__figure { grid-column: 9 / -1; grid-row: 3 / span 2; }
  .page-home .home-hero__caption { grid-column: 9 / -1; }

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

  .page-home .quick-index__item {
    border-bottom: none;
    padding-bottom: var(--space-6);
  }

  .page-home .home-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: var(--space-8);
    align-items: start;
  }

  .page-home .mirror {
    grid-template-columns: 1fr 1fr;
  }

  .page-home .mirror__side + .mirror__side {
    border-top: none;
    border-left: calc(var(--border-thick) * 2) solid var(--color-contrast-line);
  }

  .page-home .weekly {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: var(--space-8);
    align-items: start;
  }

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

  .page-home .path-list__item {
    border-top: calc(var(--border-thick) * 2) solid var(--color-ink);
    padding-block: var(--space-3) var(--space-4);
  }

  .page-home .contact-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    column-gap: var(--space-8);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-home .home-body {
    grid-template-columns: minmax(170px, 200px) minmax(0, 1fr);
    column-gap: var(--space-8);
    align-items: start;
  }

  .page-home .home-rail {
    display: block;
    position: sticky;
    top: 120px;
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .quick-index__bar,
  .page-home .quick-index__label,
  .page-home .home-rail .toc-list a {
    transition: none;
  }
}