.page-home {
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

.page-home .eyebrow {
  margin: 0 0 1rem;
}

.page-home .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 4.2vw, 2.6rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-home .lead {
  margin: 1.25rem 0 0;
  max-width: 62ch;
  font-size: clamp(.9375rem, 1.4vw, 1.0625rem);
  line-height: 1.85;
  color: var(--paper-2);
}

/* ---------- 首屏 ---------- */

.page-home .home-hero {
  padding: clamp(2rem, 5.5vw, 4.25rem) 0 clamp(2.5rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--line-gold-soft);
}

.page-home .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 5vw, 3rem);
}

.page-home .hero-visual {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 25rem;
  overflow: hidden;
  border: 1px solid var(--line-gold);
  background: var(--ink-2);
}

.page-home .hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .38;
  filter: saturate(.72) contrast(1.06);
}

.page-home .hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(14,14,12,.20) 0%, rgba(14,14,12,.72) 52%, rgba(14,14,12,.96) 100%),
    linear-gradient(90deg, rgba(14,14,12,.88) 0%, rgba(14,14,12,.30) 72%);
}

.page-home .hero-copy {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 40rem;
  padding: clamp(1.5rem, 3.2vw, 2.75rem);
}

.page-home .hero-eyebrow {
  color: var(--gold-bright);
  font-size: .75rem;
  letter-spacing: .14em;
}

.page-home .hero-title {
  margin: 0 0 1.35rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.35rem, 9vw, 5.2rem);
  line-height: 1.03;
  letter-spacing: -.025em;
}

.page-home .hero-title-line {
  display: block;
}

.page-home .hero-title-line:last-child {
  color: var(--gold-bright);
}

.page-home .hero-lead {
  margin: 0 0 1.6rem;
  max-width: 42ch;
  font-size: clamp(.9375rem, 1.5vw, 1.0625rem);
  line-height: 1.85;
  color: var(--paper-2);
}

.page-home .hero-actions {
  margin: 0 0 1.5rem;
}

.page-home .hero-status {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin: 0;
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--warm);
}

.page-home .hero-status .status-dot {
  background: var(--cinnabar);
}

/* 右侧固定入口栏 */

.page-home .entry-rail {
  align-self: start;
  padding: clamp(1.35rem, 3vw, 1.9rem);
  border: 1px solid var(--line-gold);
  border-top: 3px solid var(--gold);
  background: linear-gradient(180deg, rgba(27,26,23,.94) 0%, rgba(14,14,12,.96) 100%);
}

.page-home .rail-cap {
  margin: 0;
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-home .rail-note {
  margin: .55rem 0 1.1rem;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--warm);
}

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

.page-home .rail-item + .rail-item {
  border-top: 1px solid var(--line-paper);
}

.page-home .rail-link {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr) auto;
  align-items: center;
  gap: .75rem;
  padding: .95rem .25rem;
  color: var(--paper);
  text-decoration: none;
  transition: color .18s ease, background-color .18s ease;
}

.page-home .rail-link:hover,
.page-home .rail-link:focus-visible {
  color: var(--gold-bright);
  background-color: rgba(166,124,46,.08);
}

.page-home .rail-num {
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-home .rail-label {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: .05em;
}

.page-home .rail-go {
  color: var(--warm);
  transition: transform .18s ease, color .18s ease;
}

.page-home .rail-link:hover .rail-go,
.page-home .rail-link:focus-visible .rail-go {
  color: var(--gold-bright);
  transform: translateX(3px);
}

/* ---------- 版本状态与归档 ---------- */

.page-home .home-version {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
  background: var(--ink);
  border-bottom: 1px solid var(--line-gold-soft);
}

.page-home .version-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 3.25rem);
  align-items: start;
}

.page-home .version-lead {
  margin-top: 1.35rem;
}

.page-home .version-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin: 1.9rem 0 0;
  padding: 0;
  list-style: none;
}

.page-home .version-chip {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1.05rem;
  border: 1px solid var(--line-gold);
  background: rgba(27,26,23,.7);
  font-size: .875rem;
  letter-spacing: .08em;
  color: var(--paper-2);
}

.page-home .version-chip.is-current {
  border-color: var(--cinnabar);
  background: rgba(179,58,43,.16);
  color: var(--paper);
}

.page-home .archive-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 1.9rem 0 0;
  background: var(--line-paper);
  border: 1px solid var(--line-paper);
}

.page-home .archive-fact {
  padding: 1.1rem 1.15rem;
  background: var(--ink-2);
}

.page-home .fact-label {
  margin: 0;
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--warm);
}

.page-home .fact-num {
  margin: .5rem 0 0;
  font-size: 1.35rem;
  line-height: 1.2;
  color: var(--gold-bright);
  letter-spacing: .02em;
}

.page-home .version-foot {
  margin: 1.85rem 0 0;
  max-width: 58ch;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--paper-2);
  padding-left: 1rem;
  border-left: 2px solid var(--gold);
}

/* ---------- 图版 ---------- */

.page-home .plate {
  margin: 0;
  border: 1px solid var(--line-gold-soft);
  background: var(--ink-2);
}

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

.page-home .plate-cap {
  padding: .85rem 1.1rem 1rem;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--warm);
  border-top: 1px solid var(--line-paper);
}

.page-home .plate--version {
  margin-top: .5rem;
}

/* ---------- 第二栏：左右对照 ---------- */

.page-home .home-compare {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
  background: var(--ink-2);
  border-bottom: 1px solid var(--line-gold-soft);
}

.page-home .compare-head .lead {
  max-width: 56ch;
}

.page-home .compare-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 2.35rem;
  background: var(--line-gold);
  border: 1px solid var(--line-gold);
}

.page-home .compare-panel {
  padding: clamp(1.5rem, 3.2vw, 2.35rem);
  background: var(--ink);
  scroll-margin-top: 5.5rem;
  transition: background-color .2s ease;
}

.page-home .compare-panel:hover,
.page-home .compare-panel:focus-within {
  background: var(--ink-2);
}

.page-home .compare-panel-head {
  align-items: center;
  border-bottom: 1px solid var(--line-gold-soft);
  padding-bottom: .9rem;
}

.page-home .compare-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.6vw, 1.6rem);
  letter-spacing: .01em;
  color: var(--paper);
}

.page-home .compare-intro {
  margin: 1.1rem 0 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-home .pair-list {
  margin: 1.15rem 0 0;
  padding: 0;
  list-style: none;
}

.page-home .pair-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding: .95rem 0;
  border-top: 1px solid var(--line-paper);
}

.page-home .pair-key {
  align-self: start;
  padding: .22rem .5rem;
  border: 1px solid var(--line-gold);
  font-size: .6875rem;
  letter-spacing: .1em;
  color: var(--gold-bright);
  white-space: nowrap;
}

.page-home .pair-text {
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-home .plate--compare {
  margin-top: 2.35rem;
}

/* ---------- 底册目录 ---------- */

.page-home .home-index {
  padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(3.5rem, 8vw, 6rem);
  background: var(--ink);
}

.page-home .index-list {
  margin: 2.35rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-gold-soft);
}

.page-home .index-item {
  position: relative;
  border-bottom: 1px solid var(--line-gold-soft);
}

.page-home .index-item::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--gold-bright);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .22s ease;
  pointer-events: none;
}

.page-home .index-item:hover::before,
.page-home .index-item:focus-within::before {
  transform: scaleY(1);
}

.page-home .index-link {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: .8rem 1.25rem;
  padding: clamp(1.1rem, 2.6vw, 1.6rem) .5rem;
  color: var(--paper);
  text-decoration: none;
  transition: background-color .18s ease;
}

.page-home .index-link:hover,
.page-home .index-link:focus-visible {
  background: rgba(166,124,46,.07);
}

.page-home .index-num {
  font-size: .8125rem;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-home .index-body {
  display: block;
}

.page-home .index-name {
  display: block;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(1.0625rem, 2.2vw, 1.25rem);
  letter-spacing: .04em;
  color: var(--paper);
}

.page-home .index-desc {
  display: block;
  margin-top: .5rem;
  max-width: 56ch;
  font-size: .875rem;
  line-height: 1.8;
  color: var(--warm);
}

.page-home .index-go {
  align-self: center;
  color: var(--warm);
  transition: transform .18s ease, color .18s ease;
}

.page-home .index-link:hover .index-go,
.page-home .index-link:focus-visible .index-go {
  color: var(--gold-bright);
  transform: translateX(4px);
}

.page-home .plate--index {
  margin-top: 2.75rem;
}

.page-home .index-trust {
  margin: 2rem 0 0;
  padding-top: 1.35rem;
  border-top: 1px solid var(--line-gold-soft);
  font-size: .8125rem;
  letter-spacing: .06em;
  color: var(--warm);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-home .archive-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-home .compare-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-home .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 4vw, 4rem);
    align-items: start;
  }

  .page-home .hero-visual {
    min-height: clamp(26rem, 40vw, 34rem);
  }

  .page-home .version-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 4vw, 4rem);
  }
}

@media (max-width: 480px) {
  .page-home .index-link {
    grid-template-columns: 2rem minmax(0, 1fr);
  }

  .page-home .index-go {
    display: none;
  }

  .page-home .version-foot {
    padding-left: .85rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .rail-link,
  .page-home .rail-go,
  .page-home .index-link,
  .page-home .index-go,
  .page-home .index-item::before,
  .page-home .compare-panel {
    transition: none;
  }

  .page-home .index-item:hover::before,
  .page-home .index-item:focus-within::before {
    transform: scaleY(1);
  }
}