.page-home {
  --home-pad: clamp(44px, 7vw, 92px);
  --home-gap: clamp(18px, 3vw, 34px);
  background: var(--ink);
  color: var(--paper);
}

.page-home h1,
.page-home h2,
.page-home h3 {
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-home .section-head {
  margin-bottom: 14px;
}

.page-home .section-head__title {
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.35;
  color: var(--paper);
}

.page-home .section-head__no {
  font-family: var(--font-mono);
  color: var(--signal);
}

/* ---------- 首屏 ---------- */
.home-hero {
  position: relative;
  background:
    linear-gradient(180deg, rgba(18, 41, 63, 0.9) 0%, rgba(11, 26, 43, 1) 78%);
  border-bottom: 1px solid var(--line);
}

.home-hero__grid {
  display: grid;
  gap: var(--home-gap);
  padding-top: clamp(20px, 3.5vw, 40px);
  padding-bottom: var(--home-pad);
}

.home-hero__crumb {
  font-size: 13px;
  color: var(--rock);
  margin-bottom: 14px;
}

.home-hero__crumb a {
  color: var(--rock);
  text-decoration: none;
}

.home-hero__crumb a:hover {
  color: var(--signal-soft);
}

.home-hero__title {
  font-size: clamp(28px, 6.4vw, 52px);
  line-height: 1.16;
  margin: 0 0 16px;
  color: var(--paper);
  max-width: 16em;
}

.home-hero__lede {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--rock);
  max-width: 34em;
  margin: 0 0 26px;
}

.home-anchor {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 8px 16px;
  padding: 16px 18px 18px;
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--signal);
  background: rgba(232, 228, 216, 0.05);
  margin-bottom: 24px;
}

.home-anchor__meta {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.home-anchor__label {
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--signal-soft);
}

.home-anchor__hint {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--rock);
}

.home-anchor__no {
  grid-column: 1 / -1;
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(58px, 15vw, 108px);
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--signal);
}

.home-anchor__copy {
  justify-self: start;
  align-self: center;
}

.home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 索引地图 */
.home-map {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--ink-2);
  padding: 14px 14px 10px;
}

.home-map__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  filter: grayscale(0.35);
  pointer-events: none;
}

.home-map__grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.home-map__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 18px 14px 14px;
  background: rgba(232, 228, 216, 0.07);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--paper);
  transition: transform var(--step), border-color var(--step), background var(--step);
}

.home-map__card:hover,
.home-map__card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--signal-soft);
  background: rgba(232, 228, 216, 0.12);
}

.home-map__card:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.home-map__dot {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(255, 106, 43, 0.18);
}

.home-map__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--rock);
}

.home-map__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  color: var(--paper);
}

.home-map__note {
  font-family: var(--font-ui);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--rock);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height var(--step), opacity var(--step);
}

.home-map__card:hover .home-map__note,
.home-map__card:focus-visible .home-map__note {
  max-height: 5.4em;
  opacity: 1;
}

.home-map__hint {
  position: relative;
  margin: 12px 2px 4px;
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--rock);
  letter-spacing: 0.02em;
}

@media (min-width: 900px) {
  .home-hero__grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .home-map {
    padding: 18px 18px 12px;
  }

  .home-map__card {
    padding: 20px 18px 16px;
  }

  .home-map__name {
    font-size: 17px;
  }
}

/* ---------- 站内索引 ---------- */
.home-index {
  padding: var(--home-pad) 0;
  border-bottom: 1px solid var(--line);
}

.home-index__grid {
  display: grid;
  gap: var(--home-gap);
}

.home-index__lede {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--rock);
  max-width: 36em;
  margin: 0 0 22px;
}

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

.home-index__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  padding: 13px 6px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--paper);
  transition: background var(--step), padding-left var(--step);
}

.home-index__row:hover,
.home-index__row:focus-visible {
  background: rgba(255, 106, 43, 0.09);
  padding-left: 14px;
}

.home-index__row:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.home-index__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--signal-soft);
}

.home-index__name {
  font-family: var(--font-ui);
  font-size: 15.5px;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.home-index__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--rock);
  white-space: nowrap;
}

.home-index__arrow {
  color: var(--signal);
  font-size: 14px;
}

.home-index__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
  object-fit: cover;
}

.home-index__legend {
  margin-top: 16px;
  padding: 16px 16px 14px;
  border: 1px solid var(--ink-line);
  background: var(--paper);
  color: var(--ink);
}

.home-index__legend-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
  margin: 0 0 10px;
}

.home-index__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink-2);
}

.home-index__step-no {
  display: inline-block;
  min-width: 3.2em;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--signal);
}

@media (min-width: 900px) {
  .home-index__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .home-index__aside {
    position: sticky;
    top: calc(var(--head-h) + var(--rail-h) + 16px);
  }
}

/* ---------- 双版本对照 ---------- */
.home-compare {
  padding: var(--home-pad) 0 0;
  background: linear-gradient(180deg, rgba(18, 41, 63, 0.55), rgba(11, 26, 43, 1));
  border-bottom: 1px solid var(--line);
}

.home-compare__lede {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--rock);
  max-width: 40em;
  margin: 0 0 26px;
}

.home-compare__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
  margin-bottom: 22px;
  object-fit: cover;
}

.home-compare__cols {
  display: grid;
  gap: 14px;
}

.home-compare__card {
  position: relative;
  padding: 20px 18px 18px;
  border: 1px solid var(--line);
  background: rgba(232, 228, 216, 0.06);
  border-top: 3px solid var(--sage);
}

.home-compare__card--simple {
  border-top-color: var(--clay);
}

.home-compare__badge {
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--rock);
  margin: 0 0 8px;
}

.home-compare__num {
  font-family: var(--font-mono);
  font-size: clamp(44px, 9vw, 64px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--paper);
  margin: 0;
}

.home-compare__card--apple .home-compare__num {
  color: var(--sage);
}

.home-compare__card--simple .home-compare__num {
  color: var(--clay);
}

.home-compare__unit {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--rock);
  margin: 6px 0 10px;
}

.home-compare__desc {
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--rock);
  margin: 0;
}

/* 横向对照条 */
.home-strip {
  margin-top: clamp(26px, 4vw, 40px);
  padding-bottom: clamp(30px, 5vw, 52px);
}

.home-strip__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  margin-bottom: 14px;
}

.home-strip__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--paper);
  margin: 0;
}

.home-strip__note {
  font-family: var(--font-ui);
  font-size: 12.5px;
  color: var(--rock);
  margin: 0;
}

.home-strip__rail {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px var(--gutter) 16px;
  -webkit-overflow-scrolling: touch;
  scrollbar-color: var(--signal) rgba(154, 167, 180, 0.2);
  scrollbar-width: thin;
}

.home-strip__rail:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -2px;
}

.cmp-card {
  scroll-snap-align: start;
  flex: 0 0 min(74vw, 264px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: space-between;
  min-height: 148px;
  padding: 16px 16px 14px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--sage);
  background: var(--ink-2);
  text-decoration: none;
  color: var(--paper);
  transition: transform var(--step), border-color var(--step);
}

.cmp-card--diff {
  border-left-color: var(--clay);
}

.cmp-card:hover,
.cmp-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--signal-soft);
}

.cmp-card:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.cmp-card__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--signal-soft);
}

.cmp-card__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.45;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.cmp-card .tag {
  align-self: flex-start;
}

.home-strip__foot {
  margin-top: 4px;
}

/* ---------- 版本回溯 ---------- */
.home-trace {
  padding: var(--home-pad) 0;
  border-bottom: 1px solid var(--line);
}

.home-trace__grid {
  display: grid;
  gap: var(--home-gap);
}

.home-trace__copy > p {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--rock);
  max-width: 34em;
  margin: 0 0 20px;
}

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

.home-trace__list li {
  display: grid;
  gap: 4px;
  padding: 13px 2px;
  border-bottom: 1px solid var(--line);
}

.home-trace__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--signal-soft);
}

.home-trace__v {
  font-family: var(--font-ui);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
}

.home-trace__figure {
  margin: 0;
}

.home-trace__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
  object-fit: cover;
}

.home-trace__caption {
  margin-top: 10px;
  font-family: var(--font-ui);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--rock);
}

@media (min-width: 900px) {
  .home-trace__grid {
    grid-template-columns: 6fr 6fr;
    align-items: center;
  }

  .home-trace__list li {
    grid-template-columns: 5.5em minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

/* ---------- 改版体感 ---------- */
.home-feel {
  padding: var(--home-pad) 0;
  background: var(--ink-2);
  border-bottom: 1px solid var(--line);
}

.home-feel__grid {
  display: grid;
  gap: 14px;
}

.home-feel__card {
  padding: 22px 18px 20px;
  border: 1px solid var(--line);
  background: rgba(11, 26, 43, 0.55);
  transition: transform var(--step), border-color var(--step);
}

.home-feel__card:hover {
  transform: translateY(-2px);
  border-color: var(--signal-soft);
}

.home-feel__num {
  font-family: var(--font-mono);
  font-size: clamp(40px, 8vw, 56px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--signal);
  margin: 0 0 12px;
}

.home-feel__suffix {
  font-size: 0.42em;
  letter-spacing: 0;
  margin-left: 4px;
  color: var(--signal-soft);
}

.home-feel__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--paper);
  margin: 0 0 8px;
}

.home-feel__desc {
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--rock);
  margin: 0;
}

@media (min-width: 780px) {
  .home-feel__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 协助路径 ---------- */
.home-help {
  padding: var(--home-pad) 0;
}

.home-help__inner {
  display: grid;
  gap: var(--home-gap);
}

.home-help__copy > p {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--rock);
  max-width: 32em;
  margin: 0 0 14px;
}

.home-help__meta {
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.75;
  color: var(--sage);
}

.home-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.home-help__card {
  padding: 22px 20px;
  border: 1px solid var(--ink-line);
  background: var(--paper);
  color: var(--ink);
}

.home-help__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--signal);
  margin: 0 0 2px;
}

.home-help__label ~ .home-help__label {
  margin-top: 16px;
}

.home-help__value {
  font-family: var(--font-ui);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
  margin: 0;
  overflow-wrap: anywhere;
}

.home-help__tip {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--ink-line);
  font-family: var(--font-ui);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-2);
}

@media (min-width: 900px) {
  .home-help__inner {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}
<<<END>>>