.page-home {
  --home-rail-width: 292px;
  --home-panel-border: 1px solid var(--ab-hair);
  position: relative;
  display: block;
  color: var(--ab-snow);
  background:
    radial-gradient(1100px 620px at 88% -8%, rgba(79, 224, 192, .15), transparent 62%),
    radial-gradient(880px 520px at -10% 32%, rgba(198, 255, 61, .1), transparent 60%),
    var(--ab-green);
}

/* ---------- 首屏 ---------- */

.page-home .home-hero {
  padding-block: clamp(20px, 3vw, 34px) clamp(30px, 5vw, 56px);
}

.page-home .home-hero__crumb {
  margin-bottom: clamp(12px, 1.6vw, 20px);
  color: var(--ab-muted);
}

.page-home .home-hero__frame {
  position: relative;
  padding: clamp(24px, 4.4vw, 56px);
  border: var(--home-panel-border);
  border-radius: var(--ab-radius-xl);
  background:
    linear-gradient(158deg, rgba(28, 58, 49, .94) 0%, rgba(10, 15, 13, .96) 72%);
  box-shadow: var(--ab-shadow);
  overflow: hidden;
}

.page-home .home-hero__frame::after {
  content: "";
  position: absolute;
  inset: auto -20% -55% 42%;
  height: 60%;
  background: radial-gradient(closest-side, rgba(198, 255, 61, .16), transparent 72%);
  pointer-events: none;
}

.page-home .home-hero__tick {
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid var(--ab-cyan);
  opacity: .55;
  pointer-events: none;
}

.page-home .home-hero__tick--tl { top: 14px; left: 14px; border-right: 0; border-bottom: 0; border-radius: 8px 0 0 0; }
.page-home .home-hero__tick--tr { top: 14px; right: 14px; border-left: 0; border-bottom: 0; border-radius: 0 8px 0 0; }
.page-home .home-hero__tick--bl { bottom: 14px; left: 14px; border-right: 0; border-top: 0; border-radius: 0 0 0 8px; }
.page-home .home-hero__tick--br { bottom: 14px; right: 14px; border-left: 0; border-top: 0; border-radius: 0 0 8px 0; }

.page-home .home-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
  align-items: center;
}

.page-home .home-hero__title {
  margin: 12px 0 0;
  font-family: var(--ab-font-display);
  font-weight: 800;
  font-style: italic;
  font-size: clamp(38px, 7.4vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.015em;
}

.page-home .home-hero__lead {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.78;
  color: var(--ab-snow);
}

.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-home .home-hero__note {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ab-muted);
}

.page-home .home-hero__visual {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-home .home-hero__media {
  border-radius: var(--ab-radius-lg);
  overflow: hidden;
}

.page-home .home-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
  filter: saturate(.62) contrast(1.06) brightness(.78);
}

.page-home .home-hero__readout {
  padding: 16px 18px;
  border: var(--home-panel-border);
  border-radius: var(--ab-radius-md);
  background: rgba(12, 43, 34, .72);
}

.page-home .home-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0 0;
}

.page-home .home-hero__stat {
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(10, 15, 13, .6);
}

.page-home .home-hero__stat dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ab-muted);
}

.page-home .home-hero__stat dd {
  margin: 6px 0 0;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--ab-lime);
}

/* ---------- 骨架 ---------- */

.page-home .home-body {
  padding-block: clamp(34px, 5.4vw, 76px) clamp(50px, 7vw, 104px);
}

.page-home .home-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 54px);
  align-items: start;
}

.page-home .home-main {
  display: grid;
  gap: clamp(46px, 7vw, 96px);
  min-width: 0;
}

/* ---------- 左栏 ---------- */

.page-home .home-rail {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.page-home .home-rail__panel,
.page-home .home-rail__nav {
  padding: 18px 18px 20px;
  border: var(--home-panel-border);
  border-radius: var(--ab-radius-lg);
  background: rgba(10, 15, 13, .62);
}

.page-home .home-rail__pair {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.page-home .home-rail__version {
  padding: 14px;
  border-radius: var(--ab-radius-md);
  background: rgba(28, 58, 49, .7);
  border-left: 3px solid var(--ab-orange);
}

.page-home .home-rail__version--upgrade {
  border-left-color: var(--ab-lime);
  background: rgba(198, 255, 61, .08);
}

.page-home .home-rail__version p {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--ab-muted);
}

.page-home .home-rail__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-home .home-rail__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--ab-radius-pill);
  font-size: 14px;
  color: var(--ab-muted);
  text-decoration: none;
  transition: background-color .18s var(--ab-ease), color .18s var(--ab-ease), transform .18s var(--ab-ease);
}

.page-home .home-rail__list a .ab-mono {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ab-hair-strong);
}

.page-home .home-rail__list a:hover {
  color: var(--ab-snow);
  background: rgba(79, 224, 192, .12);
  transform: translateX(2px);
}

.page-home .home-rail__list a[aria-current="true"] {
  color: var(--ab-ink);
  background: var(--ab-lime);
  font-weight: 700;
}

.page-home .home-rail__list a[aria-current="true"] .ab-mono {
  color: rgba(10, 15, 13, .62);
}

/* ---------- 区块通用 ---------- */

.page-home .home-block {
  min-width: 0;
  scroll-margin-top: calc(var(--ab-header-h) + 28px);
}

.page-home .home-block__title {
  margin: 12px 0 0;
  font-family: var(--ab-font-display);
  font-weight: 800;
  font-style: italic;
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-home .home-block__lead {
  margin: 16px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ab-snow);
}

/* ---------- 升级三要点 ---------- */

.page-home .home-points {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-home .home-points__item {
  position: relative;
  padding: 22px 22px 24px;
  border-radius: var(--ab-radius-lg);
  background: var(--ab-panel);
  border: var(--home-panel-border);
  overflow: hidden;
}

.page-home .home-points__item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--ab-lime), transparent);
}

.page-home .home-points__index {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--ab-lime);
}

.page-home .home-points__item h3 {
  margin: 12px 0 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}

.page-home .home-points__item p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ab-muted);
}

/* ---------- 两个开局动作 ---------- */

.page-home .home-open {
  margin-top: 30px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-home .home-open__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 3vw, 32px);
  border-radius: var(--ab-radius-xl);
  background: rgba(10, 15, 13, .66);
  border: var(--home-panel-border);
  transition: transform .18s var(--ab-ease), border-color .18s var(--ab-ease);
}

.page-home .home-open__card:hover {
  transform: translateY(-2px);
  border-color: var(--ab-hair-strong);
}

.page-home .home-open__card--primary {
  background: linear-gradient(150deg, rgba(28, 58, 49, .95), rgba(10, 15, 13, .9));
  border-color: rgba(198, 255, 61, .34);
}

.page-home .home-open__card h3 {
  margin: 0;
  font-family: var(--ab-font-display);
  font-weight: 800;
  font-size: clamp(21px, 2.4vw, 28px);
  line-height: 1.24;
}

.page-home .home-open__card > p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: var(--ab-snow);
}

.page-home .home-open__scene {
  padding: 12px 14px;
  border-radius: var(--ab-radius-md);
  background: rgba(79, 224, 192, .09);
  font-size: 13.5px !important;
  line-height: 1.7 !important;
  color: var(--ab-cyan) !important;
}

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

.page-home .home-open__media {
  margin: 24px 0 0;
  border-radius: var(--ab-radius-lg);
  overflow: hidden;
}

.page-home .home-open__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.6) contrast(1.05) brightness(.8);
}

/* ---------- 跑道 ---------- */

.page-home .home-block--runway .home-runway {
  margin-top: 30px;
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--ab-radius-xl);
  background: rgba(10, 15, 13, .74);
  border: var(--home-panel-border);
}

.page-home .home-runway__group {
  margin: 0 0 14px;
  color: var(--ab-lime);
}

.page-home .home-runway__group--alt {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px dashed var(--ab-hair);
  color: var(--ab-orange);
}

.page-home .home-runway__note {
  margin: 22px 0 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ab-muted);
}

.page-home .home-corner__media {
  margin: 28px 0 0;
  border-radius: var(--ab-radius-lg);
  overflow: hidden;
}

.page-home .home-corner__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 25 / 16;
  object-fit: cover;
  filter: saturate(.58) contrast(1.08) brightness(.76);
}

/* ---------- 节拍时间轴 ---------- */

.page-home .home-timeline {
  margin: 32px 0 0;
  padding: 0 0 0 26px;
  list-style: none;
  position: relative;
  display: grid;
  gap: 26px;
}

.page-home .home-timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--ab-lime), var(--ab-orange), transparent);
  opacity: .6;
}

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

.page-home .home-timeline__dot {
  position: absolute;
  top: 8px;
  left: -26px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ab-lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 61, .18);
}

.page-home .home-timeline__dot--alt {
  background: var(--ab-orange);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, .18);
}

.page-home .home-timeline__node h3 {
  margin: 12px 0 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
}

.page-home .home-timeline__node > p:last-child {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ab-muted);
}

.page-home .home-cadence__media {
  margin: 30px 0 0;
  border-radius: var(--ab-radius-lg);
  overflow: hidden;
}

.page-home .home-cadence__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 25 / 16;
  object-fit: cover;
  filter: saturate(.5) contrast(1.08) brightness(.74);
}

/* ---------- 覆盖范围 ---------- */

.page-home .home-coverage {
  margin-top: 30px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-home .home-coverage__cell {
  padding: 22px;
  border-radius: var(--ab-radius-lg);
  background: rgba(28, 58, 49, .72);
  border: var(--home-panel-border);
}

.page-home .home-coverage__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ab-snow);
}

.page-home .home-coverage__text .ab-num {
  color: var(--ab-lime);
  font-size: 1.4em;
}

.page-home .home-coverage__big {
  margin: 10px 0 0;
  font-size: clamp(38px, 6vw, 56px);
  line-height: 1;
  color: var(--ab-lime);
}

.page-home .home-coverage__big span {
  font-size: .5em;
  vertical-align: super;
}

.page-home .home-coverage__sub {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--ab-muted);
}

.page-home .home-metrics {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .home-metrics li {
  padding: 7px 14px;
  border-radius: var(--ab-radius-pill);
  background: rgba(10, 15, 13, .66);
  border: 1px solid var(--ab-hair);
  font-size: 13px;
  color: var(--ab-snow);
}

/* ---------- 入口速查 ---------- */

.page-home .home-paths {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-home .home-paths__item {
  padding: clamp(22px, 3vw, 30px);
  border-radius: var(--ab-radius-xl);
  background: rgba(10, 15, 13, .66);
  border: var(--home-panel-border);
}

.page-home .home-paths__no {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ab-cyan);
}

.page-home .home-paths__item h3 {
  margin: 12px 0 0;
  font-family: var(--ab-font-display);
  font-weight: 800;
  font-style: italic;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.24;
}

.page-home .home-paths__steps {
  margin: 16px 0 0;
  padding: 0 0 0 20px;
  display: grid;
  gap: 9px;
}

.page-home .home-paths__steps li {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ab-snow);
}

.page-home .home-paths__steps li::marker {
  color: var(--ab-lime);
  font-weight: 700;
}

.page-home .home-paths__hint {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--ab-orange);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ab-muted);
}

/* ---------- 服务支持 ---------- */

.page-home .home-support {
  margin-top: 30px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-home .home-support__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  border-radius: var(--ab-radius-lg);
  background: rgba(28, 58, 49, .68);
  border: var(--home-panel-border);
  color: inherit;
  text-decoration: none;
  transition: transform .18s var(--ab-ease), background-color .18s var(--ab-ease), border-color .18s var(--ab-ease);
}

.page-home .home-support__card:hover {
  transform: translateY(-2px);
  background: rgba(28, 58, 49, .92);
  border-color: var(--ab-hair-strong);
}

.page-home .home-support__card--alt {
  background: rgba(198, 255, 61, .07);
  border-color: rgba(198, 255, 61, .26);
}

.page-home .home-support__card h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.36;
}

.page-home .home-support__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--ab-muted);
}

.page-home .home-support__go {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--ab-lime);
}

.page-home .home-support__more {
  margin: 24px 0 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--ab-muted);
}

.page-home .home-support__more a {
  color: var(--ab-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 224, 192, .42);
  transition: color .18s var(--ab-ease);
}

.page-home .home-support__more a:hover {
  color: var(--ab-lime);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-home .home-points,
  .page-home .home-open,
  .page-home .home-support {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-home .home-coverage__cell--wide {
    grid-column: span 2;
  }

  .page-home .home-points__item:first-child {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-home .home-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }

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

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

  .page-home .home-paths__item:first-child {
    grid-column: span 2;
  }

  .page-home .home-support {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .home-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
    padding-left: 0;
  }

  .page-home .home-timeline::before {
    inset: 8px 0 auto 0;
    width: auto;
    height: 2px;
    background: linear-gradient(90deg, var(--ab-lime), var(--ab-orange), transparent);
  }

  .page-home .home-timeline__dot {
    left: 0;
  }

  .page-home .home-timeline__node {
    padding-top: 30px;
  }
}

@media (min-width: 1024px) {
  .page-home .home-split {
    grid-template-columns: var(--home-rail-width) minmax(0, 1fr);
  }

  .page-home .home-rail {
    position: sticky;
    top: calc(var(--ab-header-h) + 24px);
    align-self: start;
  }
}

@media (max-width: 1023px) {
  .page-home .home-rail__nav {
    position: static;
  }

  .page-home .home-rail__list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
    padding-bottom: 6px;
    scrollbar-width: thin;
  }

  .page-home .home-rail__list a {
    white-space: nowrap;
  }
}

@media (max-width: 420px) {
  .page-home .home-hero__stats {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-home .home-hero__title {
    font-size: clamp(30px, 10vw, 40px);
  }
}
</PAGE_CSS>>>