.page-home {
  --ph-shadow: 0 1px 0 var(--warm-grey), 0 8px 24px rgba(36, 30, 26, .06);
  --ph-line: 1px solid var(--warm-grey);
  display: block;
  background: var(--cream-paper);
  color: var(--warm-black);
}

.page-home img { max-width: 100%; }
.page-home .mono { font-family: var(--font-mono); letter-spacing: .14em; }

/* ---------- 封面首屏 ---------- */
.page-home .hero {
  padding: var(--space-4) 0 var(--space-5);
  border-bottom: var(--ph-line);
  background:
    linear-gradient(180deg, rgba(228, 231, 238, .6) 0%, rgba(244, 239, 230, 0) 62%),
    var(--cream-paper);
}

.page-home .hero__inner {
  display: grid;
  gap: var(--space-4);
}

.page-home .hero__masthead {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-top: var(--space-2);
  border-top: 2px solid var(--ink-indigo);
}

.page-home .hero__crumb {
  margin: 0;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate-grey);
}

.page-home .hero__kicker {
  margin: 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--copper);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--copper);
}

.page-home .hero__issue {
  margin: 0;
  font-size: 11px;
  line-height: 1.8;
  letter-spacing: .1em;
  color: var(--slate-grey);
}

.page-home .hero__index {
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: 0;
}

.page-home .hero__index a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: var(--ph-line);
  font-family: var(--font-label);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--ink-indigo);
  text-decoration: none;
  transition: color .16s ease, border-color .16s ease, padding-left .16s ease;
}

.page-home .hero__index a:hover,
.page-home .hero__index a:focus-visible {
  color: var(--vermilion);
  border-bottom-color: var(--copper);
  padding-left: 4px;
}

.page-home .hero__index .mono {
  font-size: 11px;
  color: var(--copper);
}

.page-home .hero__hint {
  margin: 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate-grey);
}

.page-home .hero__cover {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 420px;
  border: var(--ph-line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--indigo-mist);
}

.page-home .hero__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home .hero__panel {
  position: relative;
  z-index: 1;
  margin: 16px;
  padding: 22px;
  max-width: 620px;
  background: rgba(244, 239, 230, .94);
  border: 1px solid var(--copper);
  border-radius: var(--radius-card);
  box-shadow: var(--ph-shadow);
}

.page-home .hero__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(27px, 4.6vw, 48px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--ink-indigo);
}

.page-home .hero__lede {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--warm-black);
}

.page-home .hero__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: var(--ph-line);
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--slate-grey);
}

.page-home .hero__facts .mono {
  margin-right: 4px;
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--ink-indigo);
}

/* ---------- 三档刻度尺 ---------- */
.page-home .tiers { padding: var(--space-6) 0; }
.page-home .tiers__head { max-width: 720px; }
.page-home .tiers__lede { margin: var(--space-2) 0 0; }

.page-home .tiers__grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.page-home .tiers__focus {
  margin: 0;
  border: var(--ph-line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--porcelain);
  box-shadow: var(--ph-shadow);
}

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

.page-home .tiers__focus figcaption {
  padding: 14px 18px;
  border-top: var(--ph-line);
  font-family: var(--font-label);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .08em;
  color: var(--slate-grey);
}

.page-home .tiers__scale {
  display: grid;
  gap: var(--space-3);
}

.page-home .scale__item {
  position: relative;
  padding: var(--space-3) var(--space-3) var(--space-3);
  background: var(--porcelain);
  border: var(--ph-line);
  border-left: 3px solid var(--copper);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  box-shadow: var(--ph-shadow);
  transition: border-color .16s ease, transform .16s ease;
}

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

.page-home .scale__marker {
  margin: 0;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--copper);
}

.page-home .scale__range {
  margin: 6px 0 0;
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--ink-indigo);
}

.page-home .scale__title {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.35;
  color: var(--ink-indigo);
}

.page-home .scale__text {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--warm-black);
}

.page-home .scale__detail {
  list-style: none;
  margin: 12px 0 0;
  padding: 12px 0 0;
  border-top: 1px dashed var(--warm-grey);
  display: grid;
  gap: 6px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-grey);
}

.page-home .scale__foot {
  margin: 14px 0 0;
}

.page-home .scale__link {
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--vermilion);
  text-decoration: none;
  border-bottom: 1px solid rgba(192, 57, 43, .35);
  padding-bottom: 2px;
  transition: border-color .16s ease;
}

.page-home .scale__link:hover,
.page-home .scale__link:focus-visible { border-bottom-color: var(--vermilion); }

/* ---------- 型号横向索引 ---------- */
.page-home .rail-section { padding: var(--space-6) 0; }
.page-home .rail-section__head { max-width: 760px; }
.page-home .rail { margin-top: var(--space-4); }

.page-home .rail__track {
  display: flex;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 4px 4px var(--space-3);
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-color: var(--copper) var(--warm-grey);
}

.page-home .rail__track::-webkit-scrollbar { height: 6px; }
.page-home .rail__track::-webkit-scrollbar-track { background: var(--warm-grey); }
.page-home .rail__track::-webkit-scrollbar-thumb { background: var(--copper); }

.page-home .rail__item {
  flex: 0 0 auto;
  width: 208px;
  scroll-snap-align: start;
}

.page-home .model-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 16px 18px 18px;
  background: var(--porcelain);
  border: var(--ph-line);
  border-top: 2px solid var(--copper);
  border-radius: 2px 2px var(--radius-card) var(--radius-card);
  text-decoration: none;
  color: var(--warm-black);
  transition: border-color .16s ease, transform .16s ease;
}

.page-home .model-card:hover,
.page-home .model-card:focus-visible {
  border-color: var(--copper);
  transform: translateY(-2px);
}

.page-home .model-card__no {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ink-indigo);
}

.page-home .model-card__src {
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--warm-black);
}

.page-home .model-card__meta {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--slate-grey);
}

.page-home .rail__hint {
  margin: 0;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--slate-grey);
}

.page-home .rail__legend {
  list-style: none;
  display: grid;
  gap: 8px;
  margin: var(--space-3) 0 0;
  padding: var(--space-3) 0 0;
  border-top: var(--ph-line);
  font-family: var(--font-label);
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-grey);
}

/* ---------- 核对节奏（深色叙事带） ---------- */
.page-home .check-band {
  padding: var(--space-6) 0;
  background-color: var(--ink-indigo);
  background-image: radial-gradient(rgba(217, 185, 120, .12) 1px, transparent 1px);
  background-size: 18px 18px;
  color: var(--porcelain);
}

.page-home .check-band__grid {
  display: grid;
  gap: var(--space-4);
}

.page-home .check-band__figure {
  margin: 0;
  border: 1px solid rgba(217, 185, 120, .45);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--indigo-mid);
}

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

.page-home .check-band .section__index {
  color: var(--copper-light);
}

.page-home .check-band .section__title {
  color: var(--porcelain);
}

.page-home .check-band__body p {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: rgba(251, 250, 247, .9);
}

.page-home .check-band__list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: var(--space-3) 0 0;
  padding: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(251, 250, 247, .84);
}

.page-home .check-band__list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.page-home .check-band .status-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  display: inline-block;
}

.page-home .check-band .status-dot--moss { background: var(--moss-green); }
.page-home .check-band .status-dot--copper { background: var(--copper); }
.page-home .check-band .status-dot--vermilion { background: var(--vermilion); }

.page-home .check-band__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin: var(--space-4) 0 0;
}

.page-home .check-band__link {
  font-family: var(--font-label);
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--copper-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 185, 120, .5);
  padding-bottom: 3px;
  transition: color .16s ease, border-color .16s ease;
}

.page-home .check-band__link:hover,
.page-home .check-band__link:focus-visible {
  color: var(--porcelain);
  border-bottom-color: var(--porcelain);
}

/* ---------- 更新日志 ---------- */
.page-home .log { padding: var(--space-6) 0; }

.page-home .log__grid {
  display: grid;
  gap: var(--space-4);
}

.page-home .log__figure {
  margin: 0;
  border: var(--ph-line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--porcelain);
  box-shadow: var(--ph-shadow);
}

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

.page-home .timeline {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0 0 0 var(--space-3);
  border-left: 1px solid var(--copper);
  display: grid;
  gap: var(--space-3);
}

.page-home .timeline__item {
  position: relative;
  display: grid;
  gap: 4px;
}

.page-home .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-3) - 4px);
  top: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--copper);
}

.page-home .timeline__item--current::before { background: var(--vermilion); }

.page-home .timeline__mark {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--copper);
}

.page-home .timeline__text {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--warm-black);
}

.page-home .log__trails {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: var(--ph-line);
}

.page-home .log__trails-title { margin: 0; }

.page-home .log__trail-list {
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: 0;
}

.page-home .log__trail-list a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: var(--ph-line);
  text-decoration: none;
  font-family: var(--font-label);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--ink-indigo);
  transition: color .16s ease, border-color .16s ease;
}

.page-home .log__trail-list a:hover,
.page-home .log__trail-list a:focus-visible {
  color: var(--vermilion);
  border-bottom-color: var(--copper);
}

.page-home .log__trail-list .mono {
  font-size: 11px;
  color: var(--slate-grey);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .hero { padding: var(--space-5) 0 var(--space-6); }
  .page-home .hero__panel { margin: var(--space-4); padding: var(--space-4); }
  .page-home .hero__cover { min-height: 500px; }
  .page-home .rail__legend { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px 24px; }
}

@media (min-width: 1000px) {
  .page-home .hero__inner {
    grid-template-columns: 272px minmax(0, 1fr);
    gap: var(--space-5);
    align-items: stretch;
  }

  .page-home .hero__cover { min-height: 560px; }

  .page-home .tiers__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-5);
    align-items: start;
  }

  .page-home .tiers__focus { grid-column: 1 / span 5; }
  .page-home .tiers__scale { grid-column: 6 / span 7; }

  .page-home .scale__item:nth-child(1) { margin-right: 20%; }
  .page-home .scale__item:nth-child(2) { margin-left: 11%; }
  .page-home .scale__item:nth-child(3) { margin-left: 4%; margin-right: 7%; }

  .page-home .check-band__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-5);
    align-items: center;
  }

  .page-home .log__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: var(--space-5);
    align-items: start;
  }
}

@media (hover: hover) and (min-width: 1000px) {
  .page-home .scale__detail {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding-top: 0;
    border-top-color: transparent;
    transition: max-height .22s ease, opacity .22s ease, padding-top .22s ease;
  }

  .page-home .scale__item:hover .scale__detail,
  .page-home .scale__item:focus-within .scale__detail {
    max-height: 320px;
    opacity: 1;
    padding-top: 12px;
    border-top-color: var(--warm-grey);
  }
}