.page-home {
  --ph-line: var(--hair);
  --ph-line-strong: var(--hair-strong);
  --ph-ease: cubic-bezier(.22, .61, .36, 1);
  padding-bottom: 72px;
}

.page-home [id] {
  scroll-margin-top: 96px;
}

.page-home .layout__main {
  position: relative;
}

.page-home .layout__main::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 340px;
  pointer-events: none;
  opacity: .045;
  background-image: repeating-linear-gradient(135deg, rgba(231, 240, 236, .8) 0 1px, transparent 1px 16px);
}

.page-home .layout__main > * {
  position: relative;
  z-index: 1;
}

/* ---------- 左侧索引 ---------- */

.page-home .index-rail__item a {
  display: block;
  padding: 7px 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid var(--ph-line);
  transition: color 140ms var(--ph-ease), padding-left 140ms var(--ph-ease);
}

.page-home .index-rail__item a:hover,
.page-home .index-rail__item a:focus-visible {
  color: var(--accent);
  padding-left: 6px;
}

.page-home .index-rail__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--ph-line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 通用区块 ---------- */

.page-home .section {
  padding: 34px 0 8px;
}

.page-home .section__head {
  max-width: 68ch;
  margin-bottom: 20px;
}

.page-home .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-numeric);
  font-size: 11.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
}

.page-home .section-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 28px);
  letter-spacing: .05em;
  line-height: 1.3;
  color: var(--text);
}

.page-home .section__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 首屏 ---------- */

.page-home .hero__head {
  max-width: 66ch;
}

.page-home .page-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.14;
  letter-spacing: .02em;
  color: var(--text);
}

.page-home .lede {
  margin: 0 0 20px;
  max-width: 66ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-home .hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  margin: 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--ph-line);
  list-style: none;
  font-family: var(--font-numeric);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-home .hero__figure {
  margin: 24px 0 0;
}

.page-home .hero__figure .figure-frame__media img {
  filter: saturate(.5) brightness(.7) contrast(1.06);
}

/* ---------- 四类入口卡 ---------- */

.page-home .dash {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 22px;
}

.page-home .dash-card {
  position: relative;
  overflow: hidden;
  padding: 20px 18px 18px;
  border: 1px solid var(--ph-line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 32, 51, .92) 0%, rgba(7, 14, 24, .94) 100%);
  box-shadow: var(--shadow-1);
  transition: transform 180ms var(--ph-ease), border-color 180ms var(--ph-ease), box-shadow 180ms var(--ph-ease);
}

.page-home .dash-card::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 160ms var(--ph-ease);
}

.page-home .dash-card:hover,
.page-home .dash-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--ph-line-strong);
  box-shadow: var(--shadow-2);
}

.page-home .dash-card:hover::after,
.page-home .dash-card:focus-within::after {
  opacity: 1;
}

.page-home .dash-card__head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-home .dash-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: .06em;
  color: var(--text);
}

.page-home .dash-card__num {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 16px 0 0;
}

.page-home .dash-card__value {
  font-family: var(--font-numeric);
  font-variant-numeric: tabular-nums;
  font-size: clamp(46px, 8vw, 78px);
  line-height: .92;
  letter-spacing: -.01em;
  color: var(--accent);
}

.page-home .dash-card__unit {
  font-family: var(--font-numeric);
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--muted);
}

.page-home .dash-card__desc {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-home .spark {
  display: block;
  width: 100%;
  height: 44px;
  margin-top: 16px;
  color: rgba(148, 167, 164, .42);
  transition: color 180ms var(--ph-ease), transform 180ms var(--ph-ease);
}

.page-home .dash-card:hover .spark,
.page-home .dash-card:focus-within .spark {
  color: var(--accent);
  transform: translateY(-2px);
}

.page-home .dash-card__figure {
  margin: 16px 0 0;
}

.page-home .dash-card__figure .figure-frame__media img {
  filter: saturate(.45) brightness(.72);
}

.page-home .dash-card__foot {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--ph-line);
  font-family: var(--font-numeric);
  font-size: 11.5px;
  letter-spacing: .04em;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 收录范围 ---------- */

.page-home .scope {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-home .spec-list {
  margin: 0;
  border-top: 1px solid var(--ph-line);
}

.page-home .spec-list > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid var(--ph-line);
}

.page-home .spec-list dt {
  font-family: var(--font-numeric);
  font-size: 12px;
  letter-spacing: .07em;
  color: var(--muted);
}

.page-home .spec-list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

.page-home .scope__aside {
  padding: 18px;
  border: 1px solid var(--ph-line);
  border-top: 2px solid var(--accent);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(11, 31, 28, .9) 0%, rgba(7, 14, 24, .92) 100%);
}

.page-home .scope__aside-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: .06em;
  color: var(--text);
}

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

.page-home .check-list li {
  position: relative;
  padding: 0 0 12px 18px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-home .check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.page-home .scope__aside-note {
  margin: 6px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--ph-line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .scope__aside-note a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 章节清单 ---------- */

.page-home .chapter-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ph-line);
}

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

.page-home .chapter__details {
  transition: background-color 160ms var(--ph-ease);
}

.page-home .chapter__details[open] {
  background: var(--accent-soft);
}

.page-home .chapter__summary {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 4px 12px;
  align-items: baseline;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
}

.page-home .chapter__summary::-webkit-details-marker {
  display: none;
}

.page-home .chapter__index {
  grid-row: 1 / span 2;
  font-family: var(--font-numeric);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--muted);
  transition: color 160ms var(--ph-ease);
}

.page-home .chapter__details[open] .chapter__index,
.page-home .chapter__details:hover .chapter__index {
  color: var(--accent);
}

.page-home .chapter__name {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: .05em;
  color: var(--text);
}

.page-home .chapter__meta {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-home .chapter__panel {
  padding: 0 4px 20px 4px;
}

.page-home .chapter__panel p {
  margin: 0 0 14px;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 跨数据集对照 ---------- */

.page-home .cross {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

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

.page-home .cross__steps {
  counter-reset: cross-step;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .cross__steps li {
  position: relative;
  padding: 13px 0 13px 38px;
  border-bottom: 1px solid var(--ph-line);
  font-size: 15px;
  line-height: 1.72;
  color: var(--text);
}

.page-home .cross__steps li::before {
  counter-increment: cross-step;
  content: counter(cross-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 14px;
  font-family: var(--font-numeric);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--accent);
}

.page-home .cross__cases {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-home .cross__cases li {
  padding: 16px 18px;
  border: 1px solid var(--ph-line);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(18, 32, 51, .72) 0%, rgba(11, 31, 28, .72) 100%);
}

.page-home .cross__cases p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text);
}

.page-home .cross__window {
  margin-top: 10px !important;
  padding-top: 10px;
  border-top: 1px solid var(--ph-line);
  font-family: var(--font-numeric);
  font-size: 11.5px !important;
  letter-spacing: .03em;
  color: var(--muted) !important;
}

/* ---------- 更新节奏与纠错 ---------- */

.page-home .cadence {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-home .timeline {
  margin: 0;
  padding: 0 0 0 18px;
  list-style: none;
  border-left: 1px solid var(--ph-line);
}

.page-home .timeline__item {
  position: relative;
  padding: 0 0 20px;
}

.page-home .timeline__item::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 6px;
  width: 8px;
  height: 8px;
  background: var(--ink);
  border: 1px solid var(--accent);
}

.page-home .timeline__when {
  margin: 0 0 4px;
  font-family: var(--font-numeric);
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--accent);
}

.page-home .timeline__what {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-home .correction {
  padding: 20px 18px;
  border: 1px solid var(--ph-line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(90, 31, 46, .38) 0%, rgba(11, 31, 28, .9) 62%, rgba(7, 14, 24, .94) 100%);
  box-shadow: var(--shadow-1);
}

.page-home .correction__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: .06em;
  color: var(--text);
}

.page-home .correction__body {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-home .correction__hint {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-home .spec-list > div {
    grid-template-columns: 150px 1fr;
    gap: 16px;
    align-items: baseline;
  }

  .page-home .chapter__summary {
    grid-template-columns: 52px 1fr auto;
    gap: 4px 16px;
    padding: 18px 6px;
  }

  .page-home .chapter__index {
    grid-row: auto;
  }

  .page-home .chapter__meta {
    text-align: right;
  }

  .page-home .chapter__panel {
    padding: 0 6px 22px 68px;
  }

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

@media (min-width: 900px) {
  .page-home .dash {
    grid-template-columns: repeat(12, 1fr);
    gap: 16px;
  }

  .page-home .dash-card--a {
    grid-column: span 7;
  }

  .page-home .dash-card--b {
    grid-column: span 5;
  }

  .page-home .dash-card--c {
    grid-column: span 5;
  }

  .page-home .dash-card--d {
    grid-column: span 7;
  }

  .page-home .cadence {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-home .scope {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-home .cross {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-home .section {
    padding: 46px 0 12px;
  }
}
<<<END>>>