.page-home {
  --home-panel: rgba(22, 31, 46, 0.72);
  --home-inset: max(var(--gutter), calc((100vw - var(--shell)) / 2 + var(--gutter)));
  padding-bottom: clamp(32px, 6vw, 72px);
}

/* ---------- 通用区块标题 ---------- */
.page-home .band-head {
  max-width: 62ch;
}

.page-home .band-head h2 {
  margin: 10px 0 12px;
  font-size: clamp(24px, 4.2vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--c-mineral);
}

.page-home .band-head__line {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-cool);
}

/* ---------- 首屏分屏 ---------- */
.page-home .hero {
  border-bottom: 1px solid var(--line);
  padding: clamp(28px, 6vw, 64px) 0 clamp(34px, 6vw, 72px);
}

.page-home .hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 5vw, 44px);
}

.page-home .hero__rail {
  border-left: 1px solid var(--line);
  padding-left: clamp(14px, 3vw, 22px);
}

.page-home .hero__rail-mark {
  margin: 8px 0 2px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--c-mineral);
}

.page-home .hero__rail-line {
  margin: 0 0 20px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-cool);
}

.page-home .hero__rail-list {
  list-style: none;
  margin: 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-cool);
}

.page-home .hero__rail-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-home .hero__wide {
  position: relative;
  isolation: isolate;
}

.page-home .hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  opacity: 0.3;
}

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

.page-home .hero__inner {
  position: relative;
  z-index: 1;
  padding: clamp(18px, 3.4vw, 34px);
}

.page-home h1 {
  margin: 0 0 14px;
  font-size: clamp(29px, 6.2vw, 46px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.025em;
  color: var(--c-mineral);
}

.page-home .hero__lede {
  max-width: 48ch;
  margin: 0 0 clamp(22px, 4vw, 38px);
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-cool);
}

/* ---------- 编号章节预览 ---------- */
.page-home .chap {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .chap__item {
  border-bottom: 1px solid var(--line);
}

.page-home .chap__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: clamp(12px, 3vw, 26px);
  padding: 15px 6px;
  text-decoration: none;
  transition: background-color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-home .chap__link:hover,
.page-home .chap__link:focus-visible {
  background: rgba(52, 224, 208, 0.05);
  outline: none;
}

.page-home .chap__link:focus-visible {
  box-shadow: inset 0 0 0 2px var(--c-neon);
}

.page-home .chap__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 4vw, 30px);
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--c-neon);
}

.page-home .chap__item:nth-child(2) .chap__num {
  color: var(--c-clay);
}

.page-home .chap__title {
  display: block;
  font-size: clamp(17px, 2.6vw, 20px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-mineral);
}

.page-home .chap__note {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-cool);
}

.page-home .chap__arrow {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--c-cool);
  transition: color 160ms var(--ease);
}

.page-home .chap__link:hover .chap__arrow,
.page-home .chap__link:focus-visible .chap__arrow {
  color: var(--c-neon);
}

@media (hover: hover) and (min-width: 900px) {
  .page-home .chap__note {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 220ms var(--ease), opacity 220ms var(--ease);
  }

  .page-home .chap__link:hover .chap__note,
  .page-home .chap__link:focus-visible .chap__note {
    max-height: 3.4em;
    opacity: 1;
  }
}

.page-home .page-home__empty {
  margin: 14px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-book);
}

/* ---------- 横向数据轨道 ---------- */
.page-home .rail-band {
  border-bottom: 1px solid var(--line);
  padding: clamp(36px, 7vw, 72px) 0 clamp(24px, 4vw, 40px);
}

.page-home .track {
  margin-top: clamp(20px, 4vw, 32px);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.page-home .track:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: 4px;
}

.page-home .track__list {
  display: flex;
  gap: clamp(12px, 2vw, 20px);
  margin: 0;
  padding: 4px var(--home-inset) 14px;
  list-style: none;
  width: max-content;
}

.page-home .track__card {
  flex: 0 0 auto;
  scroll-snap-align: start;
  width: clamp(212px, 62vw, 246px);
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  background: var(--home-panel);
  border: 1px solid var(--line);
  transition: border-color 160ms var(--ease);
}

.page-home .track__card:hover {
  border-color: var(--line-neon);
}

.page-home .metric__value {
  font-family: var(--font-mono);
  font-size: clamp(34px, 7vw, 50px);
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--c-neon);
  text-shadow: 0 0 14px rgba(52, 224, 208, 0.3);
}

.page-home .metric__unit {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-cool);
}

.page-home .metric__label {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-mineral);
}

.page-home .metric--hot .metric__value {
  color: var(--c-hot);
  text-shadow: 0 0 14px rgba(255, 122, 26, 0.36);
}

.page-home .metric--book .metric__value {
  color: var(--c-book);
  text-shadow: 0 0 12px rgba(224, 168, 60, 0.3);
}

.page-home .track__desc {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-cool);
}

.page-home .track__hint {
  margin: 14px 0 0;
  padding-inline: var(--home-inset);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-cool);
}

/* ---------- 整幅分隔图 ---------- */
.page-home .wide-fig {
  margin: 0;
  border-bottom: 1px solid var(--line);
}

.page-home .wide-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(200px, 40vw, 420px);
  object-fit: cover;
}

.page-home .wide-fig figcaption {
  padding: 12px var(--home-inset) 16px;
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--c-cool);
}

/* ---------- 双入口 ---------- */
.page-home .entry {
  border-bottom: 1px solid var(--line);
  padding: clamp(40px, 8vw, 84px) 0;
}

.page-home .entry__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 3vw, 28px);
  margin-top: clamp(22px, 4vw, 36px);
}

.page-home .entry__card {
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 4vw, 36px);
  background: var(--home-panel);
  border: 1px solid var(--line);
  transition: border-color 160ms var(--ease);
}

.page-home .entry__card:hover {
  border-color: var(--line-neon);
}

.page-home .entry__card--primary {
  border-color: var(--line-hot);
  background: linear-gradient(158deg, rgba(255, 122, 26, 0.1), rgba(22, 31, 46, 0.88) 48%);
  box-shadow: 0 26px 62px -40px rgba(255, 122, 26, 0.55);
}

.page-home .entry__card--primary:hover {
  border-color: var(--c-hot);
}

.page-home .entry__card h3 {
  margin: 10px 0 12px;
  font-size: clamp(20px, 3.4vw, 27px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--c-mineral);
}

.page-home .entry__card > p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-cool);
}

.page-home .entry__list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .entry__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-mineral);
}

.page-home .entry__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--c-clay);
}

.page-home .entry__card .btn {
  align-self: flex-start;
  margin-top: auto;
}

/* ---------- 数据口径 ---------- */
.page-home .caliber {
  border-bottom: 1px solid var(--line);
  padding: clamp(40px, 8vw, 84px) 0;
}

.page-home .caliber__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-home .caliber__fig {
  margin: 0;
  border: 1px solid var(--line);
}

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

.page-home .caliber__fig figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--c-cool);
}

.page-home .caliber__body h2 {
  margin: 10px 0 14px;
  font-size: clamp(23px, 3.8vw, 34px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--c-mineral);
}

.page-home .caliber__body > p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-cool);
}

.page-home .caliber__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-home .caliber__list li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-cool);
}

.page-home .caliber__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.9;
  color: var(--c-neon);
}

/* ---------- 站点信息 ---------- */
.page-home .trust {
  padding: clamp(40px, 8vw, 84px) 0 clamp(20px, 4vw, 40px);
}

.page-home .trust__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-home .trust__body h2 {
  margin: 10px 0 0;
  font-size: clamp(23px, 3.8vw, 34px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--c-mineral);
}

.page-home .trust__list {
  margin: 22px 0 0;
}

.page-home .trust__row {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-home .trust__row:last-child {
  border-bottom: 1px solid var(--line);
}

.page-home .trust__row dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-cool);
}

.page-home .trust__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-mineral);
  overflow-wrap: anywhere;
}

.page-home .trust__note {
  margin: 18px 0 22px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-cool);
}

.page-home .trust__fig {
  margin: 0;
  border: 1px solid var(--line);
}

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

.page-home .trust__fig figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--c-cool);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-home .hero__grid {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 68px);
    align-items: start;
  }

  .page-home .hero__rail {
    position: sticky;
    top: 104px;
  }

  .page-home .entry__grid {
    grid-template-columns: 1.2fr 1fr;
    align-items: stretch;
  }

  .page-home .caliber__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-home .trust__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

@media (min-width: 1180px) {
  .page-home .track__card {
    width: 254px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .chap__note {
    max-height: none;
    opacity: 1;
    transition: none;
  }

  .page-home .chap__link,
  .page-home .chap__arrow,
  .page-home .track__card,
  .page-home .entry__card {
    transition: none;
  }
}