.page-home {
  --home-gap: clamp(18px, 2.6vw, 28px);
  --home-anchor-offset: 118px;
}

.page-home .chapter {
  position: relative;
  padding-block: clamp(46px, 6.5vw, 92px);
  scroll-margin-top: var(--home-anchor-offset);
}

.page-home .chapter--hero {
  padding-top: clamp(28px, 4vw, 48px);
}

.page-home .chapter--dark {
  background: var(--ink-deep);
  border-block: 1px solid var(--line-gold-soft);
}

.page-home .chapter--closing {
  background: var(--panel);
  border-top: 1px solid var(--line-gold-soft);
}

/* ---------- 章节头 ---------- */
.page-home .chapter-head {
  max-width: 71ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-home .chapter-rule {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.page-home .chapter-rule::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--line-gold), transparent 92%);
}

.page-home .chapter-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--gold);
  padding: 3px 8px;
  border: 1px solid var(--line-gold);
  line-height: 1.2;
}

.page-home .chapter-title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(25px, 3.4vw, 40px);
  line-height: 1.28;
  letter-spacing: .01em;
  color: var(--text-strong);
}

.page-home .section-lede {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.15vw, 16.5px);
  line-height: 1.8;
  color: var(--text-body);
}

/* ---------- 首屏拼贴 ---------- */
.page-home .hero-collage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
}

.page-home .tree-panel {
  background: var(--panel);
  border: 1px solid var(--line-gold-soft);
  padding: 18px 16px 16px;
  align-self: start;
}

.page-home .tree-title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .06em;
  color: var(--gold-bright);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-gold-soft);
}

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

.page-home .tree-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 2px;
  border-bottom: 1px dotted rgba(143, 163, 168, .18);
}

.page-home .tree-item:last-child {
  border-bottom: 0;
}

.page-home .tree-code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-home .tree-link,
.page-home .tree-label {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-body);
  text-decoration: none;
  transition: color var(--ease), padding-left var(--ease);
}

.page-home .tree-link:hover,
.page-home .tree-link:focus-visible {
  color: var(--gold-bright);
  padding-left: 3px;
}

.page-home .tree-label {
  color: var(--text-mute);
}

.page-home .tree-more {
  display: inline-block;
  margin-top: 14px;
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  padding-bottom: 2px;
  transition: color var(--ease), border-color var(--ease);
}

.page-home .tree-more:hover,
.page-home .tree-more:focus-visible {
  color: var(--gold-bright);
  border-color: var(--gold-bright);
}

.page-home .entry-card {
  background: var(--panel);
  border: 1px solid var(--line-gold);
  box-shadow: var(--shadow);
  padding: clamp(20px, 3vw, 34px);
  transition: border-color var(--ease), transform var(--ease), box-shadow var(--ease);
}

.page-home .entry-card:hover,
.page-home .entry-card:focus-within {
  border-color: var(--gold-bright);
  transform: translateY(-2px);
}

.page-home .card-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
  padding: 2px 7px;
  border: 1px solid var(--line-gold-soft);
  background: rgba(6, 18, 30, .55);
  margin-bottom: 16px;
}

.page-home .entry-title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(20px, 2.2vw, 27px);
  line-height: 1.34;
  color: var(--text-strong);
}

.page-home .entry-text {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-body);
  max-width: 58ch;
}

.page-home .entry-points {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  border-top: 1px solid var(--line-gold-soft);
}

.page-home .entry-points li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(143, 163, 168, .16);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-body);
}

.page-home .entry-bullet {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  background: var(--gold);
  transform: translateY(-2px) rotate(45deg);
}

.page-home .side-stack {
  display: grid;
  gap: var(--home-gap);
  align-self: start;
}

.page-home .hero-figure {
  margin: 0;
  border: 1px solid var(--line-gold-soft);
  overflow: hidden;
}

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

.page-home .side-index {
  border: 1px solid var(--line-gold-soft);
  background: rgba(6, 18, 30, .5);
  padding: 14px 14px 10px;
}

.page-home .side-index-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--text-mute);
}

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

.page-home .side-index-list li + li {
  margin-top: 2px;
}

.page-home .side-index-list a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 7px 8px;
  font-size: 13.5px;
  color: var(--text-body);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-home .side-index-list a:hover,
.page-home .side-index-list a:focus-visible {
  color: var(--gold-bright);
  border-left-color: var(--gold-bright);
  background: rgba(200, 162, 74, .08);
}

.page-home .side-index-list a[aria-current="location"] {
  color: var(--gold-bright);
  border-left-color: var(--gold);
}

.page-home .side-code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--gold);
}

/* ---------- 三类内容 ---------- */
.page-home .chapter-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 40px);
}

.page-home .chapter-media {
  margin: 0;
}

.page-home .chapter-media .media-frame {
  border: 1px solid var(--line-gold-soft);
  overflow: hidden;
}

.page-home .chapter-media img,
.page-home .coverage-figure img,
.page-home .update-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 240ms cubic-bezier(.4, 0, .2, 1);
}

.page-home .chapter-media:hover img {
  transform: scale(1.015);
}

.page-home .media-caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--text-mute);
  padding-left: 10px;
  border-left: 2px solid var(--line-gold);
}

.page-home .flow-list {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-home .flow-item {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--gold);
  padding: 20px 20px 18px 56px;
  transition: border-color var(--ease), transform var(--ease), background var(--ease);
}

.page-home .flow-item:hover,
.page-home .flow-item:focus-within {
  border-color: var(--gold);
  border-left-color: var(--gold-bright);
  transform: translateY(-2px);
}

.page-home .flow-mark {
  position: absolute;
  top: 20px;
  left: 18px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold);
  width: 22px;
  height: 22px;
  line-height: 22px;
  text-align: center;
  border: 1px solid var(--line-gold);
}

.page-home .flow-title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.4;
  color: var(--text-strong);
}

.page-home .flow-text {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-body);
}

.page-home .flow-case {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mute);
  padding-left: 10px;
  border-left: 1px solid var(--line-gold-soft);
}

.page-home .flow-link {
  display: inline-block;
  font-size: 13.5px;
  letter-spacing: .04em;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  padding-bottom: 2px;
  transition: color var(--ease), border-color var(--ease);
}

.page-home .flow-link:hover,
.page-home .flow-link:focus-visible {
  color: var(--gold-bright);
  border-color: var(--gold-bright);
}

/* ---------- 数据带 ---------- */
.page-home .stat-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-gold-soft);
  border: 1px solid var(--line-gold-soft);
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-home .stat-item {
  background: var(--ink-blue);
  padding: clamp(18px, 2.4vw, 26px) clamp(14px, 2vw, 22px);
  transition: background var(--ease);
}

.page-home .stat-item:hover {
  background: var(--panel);
}

.page-home .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--gold-bright);
}

.page-home .stat-label {
  display: block;
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .06em;
  color: var(--text-mute);
}

.page-home .coverage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 40px);
}

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

.page-home .coverage-figure .media-frame {
  border: 1px solid var(--line-gold-soft);
  overflow: hidden;
  background: var(--panel);
}

.page-home .coverage-title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.42;
  color: var(--text-strong);
}

.page-home .coverage-text p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-body);
}

.page-home .coverage-text .btn {
  margin-top: 8px;
}

/* ---------- 时间轴 ---------- */
.page-home .update-banner {
  margin: 0 0 clamp(26px, 4vw, 42px);
  border: 1px solid var(--line-gold-soft);
  overflow: hidden;
  background: var(--panel);
}

.page-home .timeline {
  list-style: none;
  margin: 0 0 clamp(26px, 3.4vw, 38px);
  padding: 0 0 0 22px;
  border-left: 1px solid var(--line-gold-soft);
}

.page-home .timeline-item {
  position: relative;
  padding-bottom: 24px;
}

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

.page-home .timeline-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(200, 162, 74, .14);
}

.page-home .timeline-item:first-child::before {
  background: var(--cinnabar);
  box-shadow: 0 0 0 3px rgba(200, 64, 47, .22);
}

.page-home .timeline-date {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gold);
  margin-bottom: 8px;
}

.page-home .timeline-body {
  background: var(--panel);
  border: 1px solid var(--line-soft);
  padding: 16px 18px;
  transition: border-color var(--ease), transform var(--ease);
}

.page-home .timeline-body:hover,
.page-home .timeline-body:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-home .timeline-title {
  margin: 10px 0 8px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(16px, 1.6vw, 18.5px);
  line-height: 1.45;
  color: var(--text-strong);
}

.page-home .timeline-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-body);
  max-width: 62ch;
}

/* ---------- 两条路 ---------- */
.page-home .path-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
}

.page-home .path-card {
  position: relative;
  background: rgba(11, 27, 43, .72);
  border: 1px solid var(--line-gold-soft);
  padding: clamp(20px, 2.8vw, 30px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: border-color var(--ease), transform var(--ease), background var(--ease);
}

.page-home .path-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: var(--gold);
  opacity: .5;
  transition: opacity var(--ease);
}

.page-home .path-card:hover,
.page-home .path-card:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
  background: rgba(11, 27, 43, .92);
}

.page-home .path-card:hover::before,
.page-home .path-card:focus-within::before {
  opacity: 1;
}

.page-home .path-code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--celadon);
  padding: 3px 8px;
  border: 1px solid var(--line-soft);
  margin-bottom: 14px;
}

.page-home .path-title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(18px, 1.9vw, 22px);
  line-height: 1.42;
  color: var(--text-strong);
}

.page-home .path-text {
  margin: 0 0 22px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-body);
}

.page-home .path-card .btn {
  margin-top: auto;
}

/* ---------- 按钮与焦点 ---------- */
.page-home .btn {
  display: inline-block;
  font-size: 13.5px;
  letter-spacing: .06em;
  padding: 11px 22px;
  text-decoration: none;
  border-radius: var(--radius);
  transition: color var(--ease), border-color var(--ease), background var(--ease), transform var(--ease);
}

.page-home .btn--solid {
  background: var(--gold);
  color: var(--ink-deep);
  border: 1px solid var(--gold);
}

.page-home .btn--solid:hover,
.page-home .btn--solid:focus-visible {
  background: var(--gold-bright);
  border-color: var(--gold-bright);
  transform: translateY(-2px);
}

.page-home .btn--gold {
  background: transparent;
  color: var(--gold-bright);
  border: 1px solid var(--gold);
}

.page-home .btn--gold:hover,
.page-home .btn--gold:focus-visible {
  border-color: var(--gold-bright);
  background: rgba(200, 162, 74, .12);
}

.page-home .btn--ghost {
  background: transparent;
  color: var(--text-strong);
  border: 1px solid var(--line-soft);
}

.page-home .btn--ghost:hover,
.page-home .btn--ghost:focus-visible {
  border-color: var(--gold);
  color: var(--gold-bright);
}

.page-home a:focus-visible,
.page-home .tag:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 2px;
  box-shadow: inset 0 0 0 1px var(--ink-deep);
}

.page-home .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 30px);
  font-size: 12.5px;
  letter-spacing: .05em;
}

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

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

@media (min-width: 860px) {
  .page-home .hero-collage {
    grid-template-columns: 3fr 6fr 3fr;
    align-items: start;
  }

  .page-home .chapter-split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-home .chapter-media {
    position: sticky;
    top: 128px;
  }

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

@media (min-width: 1100px) {
  .page-home .flow-item {
    padding: 24px 26px 22px 64px;
  }

  .page-home .flow-mark {
    top: 24px;
    left: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .entry-card,
  .page-home .flow-item,
  .page-home .timeline-body,
  .page-home .path-card,
  .page-home .btn,
  .page-home .chapter-media img {
    transition: none;
  }

  .page-home .entry-card:hover,
  .page-home .entry-card:focus-within,
  .page-home .flow-item:hover,
  .page-home .flow-item:focus-within,
  .page-home .timeline-body:hover,
  .page-home .timeline-body:focus-within,
  .page-home .path-card:hover,
  .page-home .path-card:focus-within,
  .page-home .btn:hover,
  .page-home .btn:focus-visible {
    transform: none;
  }

  .page-home .chapter-media:hover img {
    transform: none;
  }
}
<<<END>>>