/* ================= 首页 · page-home ================= */
.page-home {
  --home-pad: clamp(20px, 4vw, 72px);
  --home-sec: clamp(56px, 8vw, 116px);
  --home-max: 1440px;
  display: block;
  background: var(--paper-100);
  color: var(--paper-text);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(14px, 2vw, 26px);
  background: var(--ink-950);
  color: var(--ink-text);
}

.page-home .hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-home .hero__backdrop img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  filter: saturate(.55) brightness(.5) contrast(1.12);
}

.page-home .hero__backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(to right, rgba(47, 227, 224, .09) 0 1px, transparent 1px 68px),
    repeating-linear-gradient(to bottom, rgba(47, 227, 224, .09) 0 1px, transparent 1px 68px),
    radial-gradient(130% 100% at 12% 0%, rgba(16, 26, 71, .55) 0%, rgba(7, 12, 24, .9) 58%, #070C18 100%);
}

.page-home .hero__frame {
  position: relative;
  max-width: var(--home-max);
  margin: 0 auto;
  padding: clamp(20px, 3.2vw, 48px);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(16, 26, 71, .52) 0%, rgba(7, 12, 24, .76) 68%);
}

.page-home .hero__tick {
  position: absolute;
  width: 20px;
  height: 20px;
  border: 0 solid var(--cyan-400);
  pointer-events: none;
}

.page-home .hero__tick--tl { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.page-home .hero__tick--tr { top: -1px; right: -1px; border-top-width: 2px; border-right-width: 2px; }
.page-home .hero__tick--bl { bottom: -1px; left: -1px; border-bottom-width: 2px; border-left-width: 2px; }
.page-home .hero__tick--br { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }

.page-home .hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
  padding-bottom: clamp(16px, 2.2vw, 26px);
  margin-bottom: clamp(22px, 3vw, 38px);
  border-bottom: 1px solid var(--line-soft);
}

.page-home .hero__round {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--cyan-400);
}

.page-home .hero__round::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--grass-500);
  box-shadow: 0 0 0 4px rgba(56, 179, 107, .18);
}

.page-home .hero__season {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--amber-400);
  border: 1px solid rgba(255, 198, 61, .35);
  padding: 3px 10px;
  border-radius: var(--radius);
}

.page-home .hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 58px);
}

.page-home .hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-h1);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--ink-text);
}

.page-home .hero__lede {
  max-width: 34em;
  margin: 18px 0 0;
  font-family: var(--font-editorial);
  font-size: clamp(1rem, 1.3vw, 1.125rem);
  line-height: 1.85;
  color: rgba(232, 237, 247, .84);
}

.page-home .hero__gauges {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 3vw, 36px) 0 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home .hero__gauges > * {
  display: block;
  padding: 14px 16px;
  background: rgba(7, 12, 24, .62);
}

.page-home .hero__gauges .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--cyan-400);
}

.page-home .hero__gauges .stat__label {
  display: block;
  margin-top: 6px;
  font-size: .75rem;
  letter-spacing: .06em;
  color: rgba(232, 237, 247, .6);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

/* 首屏内容索引 */
.page-home .hero__index-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  color: rgba(232, 237, 247, .58);
}

.page-home .line-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home .line-index__item a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: rgba(7, 12, 24, .6);
  color: inherit;
  text-decoration: none;
  transition: background .24s ease, transform .24s ease;
}

.page-home .line-index__item a:hover,
.page-home .line-index__item a:focus-visible {
  background: rgba(43, 61, 155, .42);
  transform: translateX(4px);
}

.page-home .line-index__num {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--cyan-400);
}

.page-home .line-index__body {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.page-home .line-index__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: -.01em;
  color: var(--ink-text);
}

.page-home .line-index__note {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .04em;
  color: rgba(232, 237, 247, .55);
}

.page-home .line-index__arrow {
  font-size: .95rem;
  color: var(--orange-500);
}

/* ---------- 四条主线 ---------- */
.page-home .lines {
  padding-block: var(--home-sec);
  background: var(--paper-100);
}

.page-home .lines__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 3.6vw, 52px);
  align-items: start;
}

.page-home .lines__intro {
  max-width: 40em;
}

.page-home .lines__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-h2);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--paper-text);
}

.page-home .lines__intro .lede {
  margin: 16px 0 0;
  font-family: var(--font-editorial);
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--slate-500);
}

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

.page-home .lines__list {
  list-style: none;
  margin: clamp(38px, 5vw, 68px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-paper);
}

.page-home .line-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  padding: clamp(24px, 3vw, 36px) 0;
  border-bottom: 1px solid var(--line-paper);
}

.page-home .line-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  width: 0;
  height: 2px;
  background: var(--orange-500);
  transition: width .32s ease;
}

.page-home .line-row:hover::before {
  width: 96px;
}

.page-home .line-row__num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--indigo-600);
}

.page-home .line-row__main {
  min-width: 0;
}

.page-home .line-row__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  line-height: 1.35;
  letter-spacing: -.005em;
  color: var(--paper-text);
}

.page-home .line-row__text {
  max-width: 42em;
  margin: 12px 0 0;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--slate-500);
}

.page-home .line-row__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.page-home .line-row__facts li {
  position: relative;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--indigo-600);
}

.page-home .line-row__facts li::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 8px;
  vertical-align: middle;
  background: var(--cyan-400);
  transform: rotate(45deg);
}

.page-home .line-row__link {
  align-self: start;
  justify-self: start;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .06em;
  color: var(--orange-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 26, .4);
  padding-bottom: 2px;
  transition: border-color .2s ease, color .2s ease;
}

.page-home .line-row__link:hover,
.page-home .line-row__link:focus-visible {
  color: var(--indigo-600);
  border-color: var(--indigo-600);
}

/* ---------- 当轮观察台 ---------- */
.page-home .snapshot {
  padding-block: var(--home-sec);
  background: var(--indigo-900);
  color: var(--ink-text);
  background-image:
    repeating-linear-gradient(to right, rgba(47, 227, 224, .05) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(to bottom, rgba(47, 227, 224, .05) 0 1px, transparent 1px 88px);
}

.page-home .snapshot__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 60px);
  align-items: start;
}

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

.page-home .snapshot__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-h2);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--ink-text);
}

.page-home .snapshot__text {
  max-width: 40em;
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(232, 237, 247, .76);
}

.page-home .metric-board {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-dark);
}

.page-home .metric-board__row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 15px 0 15px 16px;
  border-bottom: 1px solid var(--line-soft);
  transition: background .22s ease;
}

.page-home .metric-board__row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--cyan-400);
  transition: background .22s ease, transform .22s ease;
  transform-origin: top center;
}

.page-home .metric-board__row:hover {
  background: rgba(47, 227, 224, .06);
}

.page-home .metric-board__row:hover::before {
  background: var(--orange-500);
  transform: scaleY(1.12);
}

.page-home .metric-board__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -.005em;
  color: var(--ink-text);
}

.page-home .metric-board__note {
  font-size: .875rem;
  line-height: 1.6;
  color: rgba(232, 237, 247, .6);
}

.page-home .metric-board__state {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--amber-400);
}

/* ---------- 覆盖层级 ---------- */
.page-home .tiers {
  padding-block: var(--home-sec);
  background: var(--paper-100);
}

.page-home .tiers__head {
  max-width: 44em;
  margin-bottom: clamp(32px, 4vw, 56px);
}

.page-home .tiers__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-h2);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--paper-text);
}

.page-home .tiers__head .lede {
  margin: 16px 0 0;
  font-family: var(--font-editorial);
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--slate-500);
}

.page-home .tiers__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-paper);
  border: 1px solid var(--line-paper);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home .tier-card {
  position: relative;
  padding: clamp(22px, 2.6vw, 32px) clamp(20px, 2.4vw, 28px) clamp(26px, 3vw, 34px);
  background: var(--paper-100);
}

.page-home .tier-card--cn1 {
  background: linear-gradient(160deg, rgba(16, 26, 71, .06), rgba(245, 240, 230, 1) 60%);
}

.page-home .tier-card--acl {
  background: var(--paper-100);
  box-shadow: inset 0 0 0 1px rgba(47, 227, 224, .3);
}

.page-home .tier-card__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--slate-500);
  border: 1px solid var(--line-paper);
  padding: 2px 8px;
  border-radius: var(--radius);
}

.page-home .tier-card__name {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: -.01em;
  color: var(--indigo-900);
}

.page-home .tier-card__num {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--orange-500);
}

.page-home .tier-card__num span {
  display: inline-block;
  margin-left: 8px;
  font-size: .8125rem;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--slate-500);
}

.page-home .tier-card__text {
  margin: 14px 0 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--slate-500);
}

.page-home .tiers__note {
  margin: clamp(26px, 3vw, 36px) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--grass-500);
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--paper-text);
}

/* ---------- 更新节奏与团队 ---------- */
.page-home .cadence {
  padding-block: var(--home-sec);
  background: var(--slate-100);
}

.page-home .cadence__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(34px, 4.5vw, 68px);
  align-items: start;
}

.page-home .cadence__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-h2);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--indigo-900);
}

.page-home .timeline {
  position: relative;
  list-style: none;
  margin: clamp(26px, 3vw, 40px) 0 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--line-paper);
}

.page-home .timeline__item {
  position: relative;
  padding-bottom: clamp(24px, 3vw, 34px);
}

.page-home .timeline__item:last-child {
  padding-bottom: 0;
}

.page-home .timeline__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--indigo-900);
  border: 2px solid var(--cyan-400);
  border-radius: 50%;
}

.page-home .timeline__mark {
  display: block;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--indigo-600);
}

.page-home .timeline__mark b {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--orange-500);
  letter-spacing: -.02em;
}

.page-home .timeline__text {
  max-width: 40em;
  margin: 8px 0 0;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--paper-text);
}

.page-home .cadence__team {
  padding: clamp(24px, 3vw, 34px);
  background: var(--paper-100);
  border: 1px solid var(--line-paper);
  border-radius: var(--radius);
}

.page-home .cadence__team-lede {
  margin: 12px 0 0;
  font-family: var(--font-editorial);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--paper-text);
}

.page-home .team-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-paper);
}

.page-home .team-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-paper);
}

.page-home .team-list__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--grass-500);
}

.page-home .team-list__label {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--indigo-900);
}

.page-home .team-list__desc {
  font-size: .875rem;
  line-height: 1.65;
  color: var(--slate-500);
}

.page-home .cadence__team-note {
  margin: 20px 0 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--slate-500);
}

.page-home .cadence__team .link-inline {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .06em;
  color: var(--indigo-600);
}

/* ---------- 下一步 ---------- */
.page-home .next {
  padding-top: var(--home-sec);
  background: var(--ink-950);
  color: var(--ink-text);
}

.page-home .next__head {
  max-width: 40em;
  margin-bottom: clamp(28px, 3.6vw, 46px);
}

.page-home .next__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-h2);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--ink-text);
}

.page-home .next__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding-bottom: clamp(44px, 6vw, 84px);
}

.page-home .next-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid rgba(47, 227, 224, .22);
  border-radius: var(--radius);
  background: rgba(16, 26, 71, .5);
  color: inherit;
  text-decoration: none;
  transition: border-color .24s ease, background .24s ease, transform .24s ease;
}

.page-home .next-card:hover,
.page-home .next-card:focus-visible {
  border-color: var(--cyan-400);
  background: rgba(43, 61, 155, .42);
  transform: translateY(-3px);
}

.page-home .next-card--lead {
  border-color: rgba(255, 107, 26, .45);
  background: linear-gradient(152deg, rgba(255, 107, 26, .18), rgba(16, 26, 71, .62) 68%);
}

.page-home .next-card--lead:hover {
  border-color: var(--orange-500);
}

.page-home .next-card__kicker {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .12em;
  color: var(--cyan-400);
}

.page-home .next-card__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.125rem, 1.7vw, 1.375rem);
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--ink-text);
}

.page-home .next-card__desc {
  font-size: .9375rem;
  line-height: 1.75;
  color: rgba(232, 237, 247, .72);
}

.page-home .next-card__go {
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .06em;
  color: var(--orange-500);
}

.page-home .next-card--sm .next-card__title {
  font-size: 1rem;
}

.page-home .next__banner {
  margin: 0;
  border-radius: 0;
}

.page-home .next__banner .figure__media {
  border-radius: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-home .tiers__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .next__grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-home .next-card {
    grid-column: span 3;
  }

  .page-home .next-card--sm {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-home .lines__head {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }

  .page-home .line-row {
    grid-template-columns: 76px minmax(0, 1fr) 148px;
    gap: clamp(20px, 3vw, 40px);
    align-items: start;
  }

  .page-home .line-row__num {
    font-size: 1.75rem;
  }

  .page-home .line-row__link {
    justify-self: end;
    text-align: right;
  }

  .page-home .snapshot__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .page-home .cadence__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  }

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

@media (min-width: 980px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
    align-items: start;
  }

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

@media (min-width: 1120px) {
  .page-home .line-row:nth-child(even) {
    padding-left: clamp(24px, 5vw, 88px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .line-row::before,
  .page-home .line-index__item a,
  .page-home .metric-board__row::before,
  .page-home .next-card {
    transition: none;
  }

  .page-home .line-index__item a:hover,
  .page-home .next-card:hover {
    transform: none;
  }
}