.page-home {
  --home-edge: rgba(18, 38, 63, .12);
  background: var(--yb-paper);
  color: var(--yb-ink);
  overflow-x: hidden;
}

/* ---------- 通用章节小件 ---------- */
.page-home .home-eyebrow {
  margin: 0 0 .7rem;
  font-size: .78rem;
  letter-spacing: .2em;
  color: var(--yb-orange);
  text-transform: uppercase;
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--yb-indigo);
  color: var(--yb-paper);
  padding: clamp(2.25rem, 7vw, 4.5rem) 0 clamp(1.6rem, 4vw, 2.6rem);
}

.page-home .home-hero__wash {
  position: absolute;
  right: -22%;
  bottom: -46%;
  width: min(780px, 96%);
  height: min(700px, 122%);
  background: linear-gradient(150deg, rgba(242, 140, 58, .28), rgba(46, 111, 216, .32) 58%, rgba(11, 27, 51, 0) 100%);
  clip-path: polygon(34% 0, 100% 14%, 72% 100%, 0 82%);
  z-index: -1;
  pointer-events: none;
}

.page-home .home-hero__grid {
  display: grid;
  gap: clamp(1.8rem, 5vw, 3.2rem);
  align-items: center;
}

.page-home .home-hero__kicker {
  margin: 0 0 .9rem;
  font-size: .76rem;
  letter-spacing: .18em;
  color: var(--yb-glow);
}

.page-home .home-hero__title {
  margin: 0;
  font-family: var(--yb-font-display);
  font-size: clamp(2.05rem, 7.4vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -.015em;
  color: var(--yb-paper);
  max-width: 18ch;
}

.page-home .home-hero__title span {
  display: block;
  color: var(--yb-orange);
}

.page-home .home-hero__lead {
  margin: 1.15rem 0 0;
  max-width: 48ch;
  font-size: clamp(1rem, 1.7vw, 1.08rem);
  line-height: 1.85;
  color: rgba(251, 248, 241, .84);
}

.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.7rem;
}

.page-home .home-hero__figure {
  margin: 0;
  border-radius: var(--yb-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(251, 248, 241, .16);
  box-shadow: var(--yb-shadow);
  transform: rotate(-1.2deg);
}

.page-home .home-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-home .home-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.2rem;
  margin: clamp(2rem, 6vw, 3.2rem) auto 0;
  padding-top: clamp(1.1rem, 4vw, 1.7rem);
  border-top: 1px solid rgba(251, 248, 241, .16);
}

.page-home .home-hero__stats > div {
  margin: 0;
}

.page-home .home-hero__stats dt {
  margin-bottom: .3rem;
  font-size: .74rem;
  letter-spacing: .12em;
  color: rgba(251, 248, 241, .62);
}

.page-home .home-hero__stats dd {
  margin: 0;
  font-size: .96rem;
  color: var(--yb-paper);
}

.page-home .home-hero__stats dd .yb-mono {
  margin-right: .18em;
  font-size: 1.5rem;
  color: var(--yb-orange);
}

/* ---------- 横向栏目带 ---------- */
.page-home .home-band {
  background: var(--yb-paper);
  padding: clamp(2.5rem, 7vw, 4.5rem) 0;
}

.page-home .home-band__head {
  margin-bottom: clamp(1.4rem, 4vw, 2.2rem);
}

.page-home .home-band__title,
.page-home .home-split__title,
.page-home .home-catalog__title,
.page-home .home-help__title {
  margin: 0;
  font-family: var(--yb-font-display);
  font-size: clamp(1.55rem, 4.4vw, 2.55rem);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--yb-indigo);
}

.page-home .home-band__note {
  margin: .8rem 0 0;
  max-width: 56ch;
  font-size: .97rem;
  line-height: 1.8;
  color: var(--yb-mist);
}

.page-home .home-band__track {
  list-style: none;
  display: flex;
  gap: .9rem;
  margin: 0;
  padding: 0 var(--yb-gutter) 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-home .home-band__track::-webkit-scrollbar {
  height: 6px;
}

.page-home .home-band__track::-webkit-scrollbar-thumb {
  background: var(--yb-line-soft);
  border-radius: 999px;
}

.page-home .home-band__cell {
  flex: 0 0 min(76vw, 272px);
  scroll-snap-align: start;
}

.page-home .home-band__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .45rem;
  height: 100%;
  padding: 1.4rem 1.25rem 1.35rem;
  border-radius: var(--yb-radius);
  background: var(--yb-flag-white);
  border: 1px solid var(--yb-line);
  text-decoration: none;
  color: inherit;
  transition: transform .28s var(--yb-ease), box-shadow .28s var(--yb-ease);
}

.page-home .home-band__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  border-radius: var(--yb-radius) var(--yb-radius) 0 0;
  background: var(--flag, var(--yb-orange));
}

.page-home .home-band__card:hover,
.page-home .home-band__card:focus-visible {
  transform: translateY(-5px);
  box-shadow: 0 24px 48px -36px rgba(11, 27, 51, .9);
}

.page-home .home-band__cell:nth-child(1) { --flag: var(--yb-flag-blue); }
.page-home .home-band__cell:nth-child(2) { --flag: var(--yb-flag-white); }
.page-home .home-band__cell:nth-child(3) { --flag: var(--yb-flag-red); }
.page-home .home-band__cell:nth-child(4) { --flag: var(--yb-flag-green); }
.page-home .home-band__cell:nth-child(5) { --flag: var(--yb-flag-yellow); }
.page-home .home-band__cell:nth-child(6) { --flag: var(--yb-flag-blue); }

.page-home .home-band__cell:nth-child(2) .home-band__card::before {
  box-shadow: inset 0 0 0 1px rgba(18, 38, 63, .18);
}

.page-home .home-band__idx {
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--yb-mist);
}

.page-home .home-band__name {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--yb-indigo);
  letter-spacing: -.005em;
}

.page-home .home-band__desc {
  font-size: .89rem;
  line-height: 1.72;
  color: var(--yb-ink);
}

/* ---------- 版本与分类双入口 ---------- */
.page-home .home-split {
  background: linear-gradient(180deg, var(--yb-paper), var(--yb-flag-white));
  padding: clamp(2.5rem, 7vw, 4.5rem) 0;
}

.page-home .home-split__grid {
  display: grid;
  gap: clamp(1rem, 3vw, 1.6rem);
  margin-top: clamp(1.5rem, 4vw, 2.3rem);
}

.page-home .home-split__panel {
  display: flex;
  flex-direction: column;
  gap: .9rem;
  padding: clamp(1.4rem, 4vw, 2.4rem);
  border-radius: var(--yb-radius-lg);
}

.page-home .home-split__panel--dark {
  background: var(--yb-indigo);
  color: var(--yb-paper);
}

.page-home .home-split__panel--paper {
  background: var(--yb-paper);
  border: 1px solid var(--yb-line);
  border-left: 5px solid var(--yb-orange);
}

.page-home .home-split__tag {
  margin: 0;
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--yb-orange);
}

.page-home .home-split__heading {
  margin: 0;
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  line-height: 1.36;
  color: var(--yb-paper);
}

.page-home .home-split__panel--paper .home-split__heading {
  color: var(--yb-indigo);
}

.page-home .home-split__text {
  margin: 0;
  font-size: .95rem;
  line-height: 1.82;
  color: rgba(251, 248, 241, .82);
}

.page-home .home-split__panel--paper .home-split__text {
  color: var(--yb-ink);
}

.page-home .home-split__chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 0;
  padding: 0;
}

.page-home .home-split__chips li {
  padding: .38rem .85rem;
  border-radius: 999px;
  border: 1px solid rgba(251, 248, 241, .3);
  background: rgba(251, 248, 241, .08);
  font-size: .82rem;
  color: var(--yb-paper);
}

.page-home .home-split__figure {
  margin: .35rem 0 0;
  border-radius: var(--yb-radius);
  overflow: hidden;
  border: 2px solid var(--yb-orange);
}

.page-home .home-split__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 900 / 620;
  object-fit: cover;
}

.page-home .home-split__panel .yb-btn {
  align-self: flex-start;
  margin-top: .3rem;
}

.page-home .home-split__steps {
  counter-reset: ybstep;
  list-style: none;
  display: grid;
  gap: .55rem;
  margin: 0;
  padding: 0;
}

.page-home .home-split__steps li {
  counter-increment: ybstep;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .65rem;
  align-items: baseline;
  padding-bottom: .55rem;
  border-bottom: 1px dashed var(--yb-line-soft);
  font-size: .93rem;
  line-height: 1.68;
  color: var(--yb-ink);
}

.page-home .home-split__steps li::before {
  content: counter(ybstep, decimal-leading-zero);
  font-family: var(--yb-font-mono);
  font-size: .78rem;
  color: var(--yb-orange);
}

/* ---------- 目录速览 ---------- */
.page-home .home-catalog {
  background: var(--yb-paper);
  padding: clamp(2.5rem, 7vw, 4.5rem) 0;
}

.page-home .home-catalog__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.6rem);
  align-items: center;
}

.page-home .home-catalog__lead {
  margin: .9rem 0 0;
  max-width: 54ch;
  font-size: .97rem;
  line-height: 1.82;
  color: var(--yb-ink);
}

.page-home .home-catalog__layers {
  list-style: none;
  display: grid;
  gap: .55rem;
  margin: 1.2rem 0 1.4rem;
  padding: 0;
}

.page-home .home-catalog__layers li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .7rem;
  align-items: baseline;
  font-size: .94rem;
  line-height: 1.7;
  color: var(--yb-ink);
}

.page-home .home-catalog__layers .yb-mono {
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--yb-flag-blue);
}

.page-home .home-catalog__figure {
  margin: 0;
  border-radius: var(--yb-radius-lg);
  overflow: hidden;
  border: 1px solid var(--yb-line);
  box-shadow: 0 30px 60px -52px rgba(11, 27, 51, .95);
}

.page-home .home-catalog__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1200 / 720;
  object-fit: cover;
}

.page-home .home-catalog__timeline {
  margin-top: clamp(1.8rem, 5vw, 3rem);
  padding: clamp(1.3rem, 4vw, 2.3rem);
  border-radius: var(--yb-radius-lg);
  background: var(--yb-night);
  color: var(--yb-paper);
}

.page-home .home-catalog__subtitle {
  margin: 0;
  font-size: clamp(1.15rem, 2.8vw, 1.5rem);
  line-height: 1.34;
  color: var(--yb-paper);
}

.page-home .home-catalog__sublead {
  margin: .75rem 0 0;
  max-width: 62ch;
  font-size: .94rem;
  line-height: 1.82;
  color: rgba(251, 248, 241, .78);
}

.page-home .home-catalog__log {
  list-style: none;
  display: grid;
  gap: .7rem;
  margin: 1.3rem 0 0;
  padding: 0;
}

.page-home .home-catalog__log li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .92rem;
  line-height: 1.72;
  color: rgba(251, 248, 241, .8);
}

.page-home .home-catalog__log li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--yb-flag-yellow);
}

.page-home .home-catalog__log .yb-mono {
  margin-right: .55rem;
  font-size: .76rem;
  color: var(--yb-flag-yellow);
}

.page-home .home-catalog__more {
  display: inline-block;
  margin-top: 1.3rem;
  font-size: .9rem;
  color: var(--yb-glow);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 179, 107, .5);
  padding-bottom: 2px;
}

.page-home .home-catalog__more:hover,
.page-home .home-catalog__more:focus-visible {
  color: var(--yb-orange);
}

/* ---------- 帮助定位 ---------- */
.page-home .home-help {
  background: var(--yb-flag-white);
  padding: clamp(2.5rem, 7vw, 4.5rem) 0;
}

.page-home .home-help__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.6rem);
  align-items: center;
}

.page-home .home-help__figure {
  margin: 0;
  border-radius: var(--yb-radius-lg);
  overflow: hidden;
  border: 1px solid var(--yb-line);
}

.page-home .home-help__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 800 / 600;
  object-fit: cover;
}

.page-home .home-help__lead {
  margin: .9rem 0 0;
  max-width: 54ch;
  font-size: .97rem;
  line-height: 1.82;
  color: var(--yb-ink);
}

.page-home .home-help__rule {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .9rem;
  align-items: start;
  margin: 1.3rem 0 1.5rem;
  padding: 1.1rem 1.2rem;
  background: var(--yb-paper);
  border-left: 4px solid var(--yb-flag-red);
  border-radius: var(--yb-radius-sm) var(--yb-radius) var(--yb-radius) var(--yb-radius-sm);
}

.page-home .home-help__rule-num {
  display: inline-block;
  padding: .3rem .7rem;
  border-radius: 999px;
  background: var(--yb-flag-red);
  color: var(--yb-paper);
  font-size: .75rem;
  letter-spacing: .08em;
  white-space: nowrap;
}

.page-home .home-help__rule-title {
  margin: 0;
  font-size: 1.02rem;
  color: var(--yb-indigo);
}

.page-home .home-help__rule-text {
  margin: .4rem 0 0;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--yb-ink);
}

/* ---------- 尾章 ---------- */
.page-home .home-close {
  position: relative;
  background: var(--yb-indigo);
  color: var(--yb-paper);
  padding: clamp(2.8rem, 8vw, 5rem) 0 clamp(3rem, 8vw, 5.2rem);
}

.page-home .home-close::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: linear-gradient(90deg,
    var(--yb-flag-blue) 0 20%,
    var(--yb-flag-white) 20% 40%,
    var(--yb-flag-red) 40% 60%,
    var(--yb-flag-green) 60% 80%,
    var(--yb-flag-yellow) 80% 100%);
}

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

.page-home .home-close__title {
  margin: 0;
  font-family: var(--yb-font-display);
  font-size: clamp(1.5rem, 4.4vw, 2.4rem);
  line-height: 1.2;
  color: var(--yb-paper);
  max-width: 22ch;
}

.page-home .home-close__lead {
  margin: 1rem 0 0;
  max-width: 58ch;
  font-size: .97rem;
  line-height: 1.85;
  color: rgba(251, 248, 241, .82);
}

.page-home .home-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.6rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-home .home-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .home-split__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .home-catalog__log {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1.6rem;
  }
}

@media (min-width: 960px) {
  .page-home .home-hero {
    padding-bottom: clamp(2rem, 4vw, 3rem);
  }

  .page-home .home-hero__grid {
    grid-template-columns: 1.05fr .95fr;
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-home .home-hero__figure {
    transform: rotate(-1.8deg) translateY(1.1rem);
  }

  .page-home .home-band__track {
    padding-left: max(var(--yb-gutter), calc((100vw - var(--yb-maxw)) / 2));
    padding-right: max(var(--yb-gutter), calc((100vw - var(--yb-maxw)) / 2));
  }

  .page-home .home-band__cell {
    flex-basis: 288px;
  }

  .page-home .home-split__grid {
    grid-template-columns: 1.08fr .92fr;
    align-items: start;
  }

  .page-home .home-split__panel--paper {
    transform: translateY(2.2rem);
  }

  .page-home .home-catalog__grid {
    grid-template-columns: 1.02fr .98fr;
  }

  .page-home .home-help__grid {
    grid-template-columns: .88fr 1.12fr;
  }

  .page-home .home-help__figure {
    transform: translateY(-1rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .home-band__card,
  .page-home .home-hero__figure,
  .page-home .home-split__panel--paper,
  .page-home .home-help__figure {
    transition: none;
    transform: none;
  }
}
<<<END>>>