.page-home {
  --home-accent-diag: 96px;
  background: var(--bb-sand);
  color: var(--bb-ink);
  overflow-x: hidden;
}

.page-home img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  margin-top: calc(-1 * var(--bb-header-h));
  padding-top: calc(var(--bb-header-h) + clamp(30px, 6vw, 80px));
  padding-bottom: clamp(48px, 8vw, 104px);
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(0, 196, 140, 0.20), transparent 62%),
    radial-gradient(80% 70% at 8% 100%, rgba(255, 107, 53, 0.22), transparent 66%),
    linear-gradient(152deg, var(--bb-deep) 0%, var(--bb-trench) 62%, #06202B 100%);
  color: var(--bb-sand);
  overflow: hidden;
}

.page-home .home-hero__grain {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(191, 227, 232, 0.18) 1px, transparent 1px);
  background-size: 9px 9px;
  opacity: 0.4;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(158deg, #000 0%, transparent 64%);
  mask-image: linear-gradient(158deg, #000 0%, transparent 64%);
}

.page-home .home-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--bb-max);
  margin: 0 auto;
  padding: 0 var(--bb-gutter);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(34px, 6vw, 56px);
}

.page-home .home-hero__ctx {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 7px 13px;
  border: 1px solid var(--bb-line-light);
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--bb-foam);
}

.page-home .home-hero__pulse {
  width: 7px;
  height: 7px;
  background: var(--bb-green);
  box-shadow: 0 0 0 4px rgba(0, 196, 140, 0.18);
}

.page-home .home-hero__title {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  font-family: var(--bb-font-zh);
  font-weight: 900;
  font-size: clamp(1.95rem, 5.2vw, 3.5rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--bb-sand);
}

.page-home .home-hero__title em {
  display: block;
  font-style: normal;
  color: var(--bb-coral);
}

.page-home .home-hero__lead {
  max-width: 52ch;
  margin: 0 0 clamp(24px, 3.4vw, 38px);
  font-size: clamp(1rem, 1.3vw, 1.0625rem);
  line-height: 1.8;
  color: rgba(246, 241, 231, 0.86);
}

.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-home .home-hero__visual {
  position: relative;
  min-width: 0;
}

.page-home .home-hero__cut {
  position: relative;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  clip-path: polygon(0 7%, 100% 0, 100% 93%, 0 100%);
  background: linear-gradient(140deg, var(--bb-trench), var(--bb-coral));
}

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

.page-home .home-hero__board {
  position: relative;
  margin-top: -46px;
  margin-left: clamp(10px, 5%, 44px);
  margin-right: clamp(0px, 2%, 18px);
  padding: 18px 20px 20px;
  background: rgba(5, 43, 59, 0.94);
  border-left: 4px solid var(--bb-coral);
  border-top: 1px solid var(--bb-line-light);
}

.page-home .home-hero__board-tag {
  margin: 0 0 6px;
  font-family: var(--bb-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--bb-foam);
}

.page-home .home-hero__board-num {
  margin: 0 0 14px;
  font-family: var(--bb-font-display);
  font-weight: 600;
  font-size: clamp(3rem, 9vw, 5rem);
  line-height: 0.84;
  letter-spacing: -0.02em;
  color: var(--bb-coral);
}

.page-home .home-hero__board-list {
  margin: 0;
  display: grid;
  gap: 8px;
}

.page-home .home-hero__board-list > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-top: 8px;
  border-top: 1px solid rgba(191, 227, 232, 0.16);
}

.page-home .home-hero__board-list dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(220, 232, 234, 0.72);
}

.page-home .home-hero__board-list dd {
  margin: 0;
  font-size: 13px;
  color: var(--bb-sand);
}

/* ---------- 轮次索引 ---------- */
.page-home .home-rounds {
  background: var(--bb-sand);
}

.page-home .home-rounds__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-home .home-rounds__title {
  margin: 12px 0 16px;
  font-family: var(--bb-font-zh);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--bb-ink);
}

.page-home .home-rounds__text {
  margin: 0;
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(8, 20, 24, 0.78);
}

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

.page-home .round-track {
  list-style: none;
  margin: clamp(30px, 4.5vw, 54px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-home .round-track__node {
  position: relative;
  padding: 18px 0 18px 24px;
  border-left: 1px solid var(--bb-line);
}

.page-home .round-track__node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 26px;
  width: 9px;
  height: 9px;
  background: var(--bb-trench);
  transform: rotate(45deg);
}

.page-home .round-track__node.is-current::before {
  background: var(--bb-coral);
  box-shadow: 0 0 0 5px rgba(255, 107, 53, 0.18);
}

.page-home .round-track__tag {
  display: block;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: rgba(8, 20, 24, 0.5);
}

.page-home .round-track__label {
  display: block;
  margin: 4px 0 6px;
  font-family: var(--bb-font-zh);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--bb-ink);
}

.page-home .round-track__node.is-current .round-track__label {
  color: var(--bb-coral);
}

.page-home .round-track__meta {
  display: block;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(8, 20, 24, 0.66);
}

.page-home .round-track__hint {
  margin: clamp(24px, 3vw, 34px) 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(8, 20, 24, 0.62);
}

.page-home .round-track__hint kbd {
  display: inline-block;
  min-width: 22px;
  padding: 1px 6px;
  border: 1px solid rgba(8, 20, 24, 0.22);
  border-bottom-width: 2px;
  font-family: var(--bb-font-mono);
  font-size: 12px;
  color: var(--bb-ink);
}

/* ---------- 三块板 ---------- */
.page-home .home-boards {
  background: linear-gradient(180deg, var(--bb-deep) 0%, var(--bb-trench) 118%);
  color: var(--bb-sand);
}

.page-home .home-boards__band {
  position: relative;
  height: clamp(160px, 24vw, 280px);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 74%, 0 100%);
}

.page-home .home-boards__band img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.62;
}

.page-home .home-boards__head {
  max-width: 62ch;
}

.page-home .home-boards__title {
  margin: 12px 0 14px;
  font-family: var(--bb-font-zh);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--bb-sand);
}

.page-home .home-boards__lead {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(191, 227, 232, 0.82);
}

.page-home .home-boards__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 40px);
  margin-top: clamp(30px, 4vw, 52px);
}

.page-home .board {
  --accent: var(--bb-coral);
  position: relative;
  padding-top: 20px;
  border-top: 2px solid var(--accent);
}

.page-home .board--schedule {
  --accent: var(--bb-green);
}

.page-home .board--changes {
  --accent: var(--bb-yellow);
}

.page-home .board__no {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--accent);
}

.page-home .board__title {
  margin: 0 0 12px;
  font-family: var(--bb-font-zh);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--bb-sand);
}

.page-home .board__text {
  margin: 0 0 18px;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: rgba(220, 232, 234, 0.8);
}

.page-home .board__link {
  display: inline-block;
  padding-bottom: 3px;
  font-family: var(--bb-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--bb-foam);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
}

.page-home .board__link:hover,
.page-home .board__link:focus-visible {
  color: var(--bb-sand);
  border-bottom-color: var(--bb-coral-hot);
}

/* ---------- 适配与下载 ---------- */
.page-home .home-devices {
  background: var(--bb-sand);
}

.page-home .home-devices__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 56px);
  align-items: center;
}

.page-home .home-devices__title {
  margin: 12px 0 16px;
  font-family: var(--bb-font-zh);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--bb-ink);
}

.page-home .home-devices__text {
  margin: 0 0 22px;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(8, 20, 24, 0.78);
}

.page-home .device-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.page-home .device-list__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--bb-line);
}

.page-home .device-list__key {
  font-size: 0.875rem;
  color: rgba(8, 20, 24, 0.62);
}

.page-home .device-list__val {
  font-size: 0.9375rem;
  color: var(--bb-ink);
}

.page-home .home-devices__note {
  margin: 0 0 24px;
  padding-left: 16px;
  border-left: 3px solid var(--bb-green);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(8, 20, 24, 0.76);
}

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

/* ---------- 变更与目录 ---------- */
.page-home .home-updates {
  background: var(--bb-mist);
}

.page-home .home-updates__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

.page-home .home-updates__title {
  margin: 12px 0 16px;
  font-family: var(--bb-font-zh);
  font-weight: 900;
  font-size: clamp(1.55rem, 3.4vw, 2.35rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--bb-ink);
}

.page-home .home-updates__text {
  margin: 0 0 26px;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(8, 20, 24, 0.76);
}

.page-home .update-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-home .update-list__item {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(8, 20, 24, 0.14);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(8, 20, 24, 0.8);
}

.page-home .update-list__no {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--bb-coral);
}

.page-home .home-updates__toc {
  padding: 22px 20px 24px;
  background: var(--bb-deep);
  color: var(--bb-sand);
}

.page-home .home-updates__toc-title {
  margin: 0 0 16px;
  font-family: var(--bb-font-zh);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  color: var(--bb-yellow);
}

.page-home .toc-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}

.page-home .toc-list__item {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(191, 227, 232, 0.16);
  font-size: 0.875rem;
  line-height: 1.6;
}

.page-home .toc-list__k {
  min-width: 54px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--bb-foam);
}

.page-home .toc-list__v {
  color: rgba(246, 241, 231, 0.84);
}

.page-home .home-updates__toc .board__link {
  --accent: var(--bb-yellow);
}

/* ---------- 服务承诺 ---------- */
.page-home .home-promise {
  position: relative;
  background:
    radial-gradient(70% 90% at 92% 0%, rgba(255, 107, 53, 0.22), transparent 64%),
    linear-gradient(180deg, var(--bb-deep) 0%, #06202B 100%);
  color: var(--bb-sand);
}

.page-home .home-promise__title {
  margin: 12px 0 16px;
  font-family: var(--bb-font-zh);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--bb-sand);
}

.page-home .home-promise__lead {
  margin: 0 0 clamp(28px, 4vw, 42px);
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(246, 241, 231, 0.84);
}

.page-home .home-promise__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(191, 227, 232, 0.18);
  margin-bottom: clamp(26px, 3.6vw, 40px);
}

.page-home .promise-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 16px 22px;
  background: rgba(10, 74, 99, 0.55);
}

.page-home .promise-stat__num {
  font-family: var(--bb-font-display);
  font-weight: 600;
  font-size: clamp(2.1rem, 5vw, 3rem);
  line-height: 1;
  color: var(--bb-coral);
}

.page-home .promise-stat__label {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(191, 227, 232, 0.86);
}

.page-home .home-promise__text {
  margin: 0 0 clamp(26px, 3.4vw, 38px);
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(246, 241, 231, 0.8);
}

.page-home .home-promise__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-home .home-rounds__top {
    grid-template-columns: 7fr 5fr;
  }

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

  .page-home .home-promise__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .round-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid var(--bb-line);
  }

  .page-home .round-track__node {
    padding: 38px 26px 0 0;
    border-left: 0;
  }

  .page-home .round-track__node::before {
    left: 0;
    top: -6px;
  }
}

@media (min-width: 960px) {
  .page-home .home-hero__inner {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: clamp(40px, 5vw, 76px);
  }

  .page-home .home-devices__grid {
    grid-template-columns: 6fr 6fr;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-home .home-hero__pulse {
    box-shadow: none;
  }
}
<<<END>>>