.page-home {
  --home-notch: 18px;
  --home-pad: clamp(46px, 7vw, 96px);
  background: var(--abyss);
  color: var(--ivory);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-home .home-wrap {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
}

/* ---------- Hero ---------- */
.page-home .home-hero {
  position: relative;
  padding: clamp(22px, 3.4vw, 40px) var(--gutter) clamp(44px, 6.5vw, 88px);
  background:
    radial-gradient(120% 96% at 92% -12%, rgba(31, 78, 121, 0.55) 0%, rgba(8, 26, 51, 0) 60%),
    linear-gradient(180deg, #0A1D38 0%, var(--abyss) 44%, #050F1D 100%);
  overflow: hidden;
}

.page-home .home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(127, 154, 168, 0.07) 0 1px, transparent 1px 88px);
  opacity: 0.55;
  pointer-events: none;
}

.page-home .home-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-gold), transparent);
}

.page-home .home-hero .home-wrap {
  position: relative;
  z-index: 1;
}

.page-home .home-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-home .home-meta__index {
  color: var(--gold);
}

.page-home .home-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 60px);
  margin-top: clamp(26px, 4vw, 48px);
}

.page-home .home-hero__lead h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(31px, 6.2vw, 66px);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ivory);
}

.page-home .home-hl {
  color: var(--gold-bright);
}

.page-home .home-hero__intro {
  margin: clamp(16px, 2vw, 22px) 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.6vw, 28px);
}

.page-home .home-ladder {
  position: relative;
  list-style: none;
  margin: clamp(26px, 3.4vw, 42px) 0 0;
  padding: 0 0 0 26px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: clamp(14px, 1.8vw, 20px);
}

.page-home .home-ladder::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  width: 2px;
  height: 56%;
  background: linear-gradient(180deg, var(--gold), rgba(201, 162, 39, 0));
}

.page-home .home-ladder li {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
}

.page-home .home-ladder li::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 6px;
  width: 10px;
  height: 10px;
  border: 1px solid var(--gold);
  background: var(--abyss);
  transform: rotate(45deg);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .home-ladder li:hover::before {
  background: var(--gold-bright);
  border-color: var(--gold-bright);
}

.page-home .home-ladder__no {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-home .home-ladder__label {
  font-size: 15px;
  color: var(--ivory);
}

.page-home .home-ladder__hint {
  font-size: 13px;
  color: var(--slate);
}

/* ---------- 入口卡片群 ---------- */
.page-home .home-envoy {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background: linear-gradient(155deg, rgba(15, 42, 74, 0.78), rgba(8, 26, 51, 0.95));
  border: 1px solid var(--line-soft);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 0 100%);
}

.page-home .home-envoy__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.4;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 52%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 0%, #000 52%, transparent 100%);
}

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

.page-home .home-envoy__title {
  position: relative;
  z-index: 1;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-home .home-cards {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-home .home-card {
  position: relative;
  display: block;
  padding: 16px 16px 18px;
  text-decoration: none;
  color: var(--ivory);
  background: rgba(8, 26, 51, 0.74);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--home-notch)) 0, 100% var(--home-notch), 100% 100%, 0 100%);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-home .home-card::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}

.page-home .home-card:hover,
.page-home .home-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--line-gold);
  background: rgba(15, 42, 74, 0.92);
}

.page-home .home-card:hover::after,
.page-home .home-card:focus-visible::after {
  transform: scaleX(1);
}

.page-home .home-card__no {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-home .home-card h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--ivory);
}

.page-home .home-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 章节跳转 ---------- */
.page-home .home-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: clamp(30px, 4vw, 50px);
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}

.page-home .home-jump a {
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .home-jump a:hover,
.page-home .home-jump a:focus-visible,
.page-home .home-jump a[aria-current="true"] {
  color: var(--gold-bright);
  border-bottom-color: var(--gold);
}

/* ---------- 区块骨架 ---------- */
.page-home .home-block {
  position: relative;
  padding: var(--home-pad) var(--gutter);
}

.page-home .home-index {
  display: inline-block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-home .home-block__head {
  max-width: 660px;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-home .home-block__head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.24;
  letter-spacing: 0.01em;
  color: var(--ivory);
}

.page-home .home-block__head p {
  margin: 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 01 开通步骤 ---------- */
.page-home .home-block--steps {
  background: linear-gradient(180deg, #06121F 0%, var(--abyss) 62%, #07182B 100%);
}

.page-home .home-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
}

.page-home .home-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .home-steps__item {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-home .home-steps__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-home .home-steps__no {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 28px);
  line-height: 1.05;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-home .home-steps__body h3 {
  margin: 0 0 7px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--ivory);
}

.page-home .home-steps__body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--mist);
}

.page-home .home-steps__tag {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--cold);
  border: 1px solid var(--line);
}

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

.page-home .home-steps__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  max-width: 100%;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-home .home-steps__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 02 版本 ---------- */
.page-home .home-block--versions {
  background:
    radial-gradient(90% 70% at 8% 0%, rgba(127, 154, 168, 0.16), rgba(8, 26, 51, 0) 62%),
    linear-gradient(180deg, #07182B 0%, var(--abyss) 100%);
}

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

.page-home .home-version {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  background: rgba(15, 42, 74, 0.55);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--home-notch)) 0, 100% var(--home-notch), 100% 100%, 0 100%);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-home .home-version--ext {
  background: rgba(31, 78, 121, 0.38);
  border-color: var(--line-gold);
}

.page-home .home-version:hover {
  border-color: var(--gold);
}

.page-home .home-version h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.page-home .home-version__lead {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-home .home-version ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .home-version li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  font-size: 14px;
  color: var(--ivory);
  border-bottom: 1px solid var(--line-soft);
}

.page-home .home-version li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-home .home-version li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--sea);
  transform: rotate(45deg);
}

.page-home .home-version--ext li::before {
  background: var(--gold);
}

.page-home .home-version--ext li:last-child::before {
  background: var(--cinnabar);
}

.page-home .home-versions__foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-home .home-versions__foot a {
  color: var(--gold-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .home-versions__foot a:hover {
  color: var(--ivory);
  border-bottom-color: var(--ivory);
}

/* ---------- 03 地区覆盖（浅色区块） ---------- */
.page-home .home-block--coverage {
  background: linear-gradient(158deg, var(--mist) 0%, #C9D7DD 68%, var(--mist) 100%);
  color: var(--ink);
}

.page-home .home-coverage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  align-items: center;
}

.page-home .home-block--coverage .home-index {
  color: var(--gold-dark);
}

.page-home .home-block--coverage h2 {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.16;
  color: var(--ink);
}

.page-home .home-big {
  font-family: var(--font-mono);
  font-size: clamp(50px, 8.4vw, 92px);
  line-height: 0.82;
  letter-spacing: -0.02em;
  color: var(--sea);
}

.page-home .home-coverage__text p {
  margin: 0 0 22px;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: #2E434C;
}

.page-home .home-coverage__text .btn--ghost {
  color: var(--sea);
  border-color: rgba(31, 78, 121, 0.45);
}

.page-home .home-coverage__text .btn--ghost:hover {
  color: var(--ink);
  border-color: var(--ink);
}

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

.page-home .home-coverage__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

.page-home .home-regions {
  list-style: none;
  margin: clamp(26px, 3.4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-home .home-regions li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  padding: 11px 12px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(31, 78, 121, 0.2);
  font-size: 14px;
  color: var(--ink);
}

.page-home .home-regions li span:last-child {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--gold-dark);
}

/* ---------- 04 记录回溯 ---------- */
.page-home .home-block--records {
  background:
    radial-gradient(80% 66% at 92% 100%, rgba(127, 154, 168, 0.16), rgba(8, 26, 51, 0) 66%),
    linear-gradient(180deg, var(--abyss) 0%, #061322 100%);
}

.page-home .home-records {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  align-items: center;
}

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

.page-home .home-records__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.page-home .home-records__text h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.24;
  color: var(--ivory);
}

.page-home .home-records__text p {
  margin: 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--mist);
}

.page-home .home-records__keys {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
}

.page-home .home-records__keys li {
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  border: 1px solid var(--line-gold);
}

/* ---------- 05 联系 ---------- */
.page-home .home-block--contact {
  background: linear-gradient(180deg, #061322 0%, var(--abyss) 100%);
}

.page-home .home-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  padding: clamp(24px, 3.6vw, 46px);
  background: linear-gradient(150deg, rgba(15, 42, 74, 0.92), rgba(8, 26, 51, 0.97));
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 34px) 0, 100% 34px, 100% 100%, 0 100%);
}

.page-home .home-contact__text h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.24;
  color: var(--ivory);
}

.page-home .home-contact__text p {
  margin: 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-home .home-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-home .home-contact__list {
  margin: 0;
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-home .home-contact__list div {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.page-home .home-contact__list div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-home .home-contact__list dt {
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-home .home-contact__list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.62;
  color: var(--ivory);
}

.page-home .home-contact__list dd.is-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  word-break: break-all;
}

.page-home .home-tail {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-home .home-tail a {
  display: block;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
  color: var(--mist);
  background: rgba(15, 42, 74, 0.5);
  border-left: 2px solid var(--gold);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-home .home-tail a:hover,
.page-home .home-tail a:focus-visible {
  background: rgba(31, 78, 121, 0.65);
  color: var(--ivory);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-home .home-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-home .home-versions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }

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

@media (min-width: 900px) {
  .page-home .home-steps {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: start;
  }

  .page-home .home-steps__figure {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

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

  .page-home .home-records {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  }

  .page-home .home-contact {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-home .home-regions {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-home .home-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .home-card,
  .page-home .home-card::after,
  .page-home .home-ladder li::before,
  .page-home .home-jump a,
  .page-home .home-tail a,
  .page-home .home-version {
    transition: none;
  }
}