.page-home {
  --home-cell: 1px solid rgba(11, 14, 19, 0.12);
  --home-rule: 1px solid rgba(243, 245, 248, 0.16);

  padding-top: var(--head-h);
  padding-left: var(--rail-w);
  background: var(--ink);
  overflow-x: clip;
}

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

.page-home .band-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--edge);
}

/* ---------- 首屏 ---------- */

.page-home .band--hero {
  background: var(--ink);
  color: var(--on-dark);
  padding-bottom: clamp(56px, 8vw, 110px);
  background-image:
    linear-gradient(180deg, rgba(199, 205, 214, 0.07) 0, rgba(199, 205, 214, 0) 320px);
}

.page-home .hero-annot {
  display: none;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  line-height: 1;
  color: var(--on-dark-3);
  writing-mode: vertical-rl;
  position: absolute;
  inset-inline-start: 10px;
  top: clamp(90px, 12vw, 170px);
}

.page-home .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding-top: clamp(40px, 7vw, 96px);
}

.page-home .hero-eyebrow {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-home .hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 7vw, 88px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--on-dark);
}

.page-home .hero-lead {
  margin: 24px 0 0;
  max-width: 30em;
  font-size: 16px;
  line-height: 1.9;
  color: var(--on-dark-2);
}

.page-home .hero-figure {
  position: relative;
  margin: 0;
  border: var(--hair-dark);
  aspect-ratio: 16 / 11;
  overflow: hidden;
}

.page-home .hero-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(243, 245, 248, 0.14) 0 1px, transparent 1px 25%),
    repeating-linear-gradient(0deg, rgba(243, 245, 248, 0.10) 0 1px, transparent 1px 25%);
  pointer-events: none;
}

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

/* ---------- 章节四件套 ---------- */

.page-home .sec-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-home .sec-index {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--gold-2);
}

.page-home .sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-home .sec-note {
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--rock);
}

.page-home .go-link {
  display: inline-block;
  position: relative;
  color: var(--aurora-2);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(10, 122, 107, 0.4);
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-home .go-link:hover,
.page-home .go-link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.page-home .go-link--dark {
  color: var(--aurora);
  border-bottom-color: rgba(52, 226, 198, 0.45);
}

.page-home .go-link--dark:hover,
.page-home .go-link--dark:focus-visible {
  color: var(--on-dark);
  border-bottom-color: var(--on-dark);
}

/* ---------- 动作分段 ---------- */

.page-home .band--paths {
  background: var(--mist);
  color: var(--ink);
  padding-block: clamp(52px, 7vw, 96px);
}

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

.page-home .seg-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
  pointer-events: none;
}

.page-home .seg-bar {
  display: flex;
  align-items: stretch;
  gap: 0;
  border-bottom: 1px solid rgba(11, 14, 19, 0.14);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-home .seg-bar::-webkit-scrollbar {
  display: none;
}

.page-home .seg-tab {
  position: relative;
  flex: 0 0 auto;
  margin: 0 0 -1px;
  padding: 14px 26px 14px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--rock);
  white-space: nowrap;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 180ms var(--ease);
}

.page-home .seg-tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 26px;
  bottom: -2px;
  height: 2px;
  background: var(--aurora-2);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 180ms var(--ease);
}

.page-home .seg-tab:hover {
  color: var(--ink);
}

.page-home #seg-a:checked ~ .seg-bar [for="seg-a"],
.page-home #seg-b:checked ~ .seg-bar [for="seg-b"],
.page-home #seg-c:checked ~ .seg-bar [for="seg-c"] {
  color: var(--ink);
}

.page-home #seg-a:checked ~ .seg-bar [for="seg-a"]::after,
.page-home #seg-b:checked ~ .seg-bar [for="seg-b"]::after,
.page-home #seg-c:checked ~ .seg-bar [for="seg-c"]::after {
  transform: scaleX(1);
}

.page-home #seg-a:focus-visible ~ .seg-bar [for="seg-a"],
.page-home #seg-b:focus-visible ~ .seg-bar [for="seg-b"],
.page-home #seg-c:focus-visible ~ .seg-bar [for="seg-c"] {
  outline: 2px solid var(--aurora-2);
  outline-offset: 3px;
}

.page-home .seg-panels {
  padding-top: clamp(24px, 3.5vw, 40px);
}

.page-home .seg-panel {
  display: none;
}

.page-home #seg-a:checked ~ .seg-panels #seg-panel-a,
.page-home #seg-b:checked ~ .seg-panels #seg-panel-b,
.page-home #seg-c:checked ~ .seg-panels #seg-panel-c {
  display: block;
}

.page-home .seg-panel-inner {
  display: grid;
  gap: 24px;
}

.page-home .seg-text p {
  margin: 0 0 14px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: #2A313B;
}

.page-home .seg-text p:last-child {
  margin-bottom: 0;
}

.page-home .seg-go {
  margin: 0;
}

/* ---------- 12 类资源索引 ---------- */

.page-home .band--index {
  background: var(--white);
  color: var(--ink);
  padding-block: clamp(52px, 7vw, 96px);
}

.page-home .band--index .sec-index {
  color: var(--gold-2);
}

.page-home .index-wrap {
  position: relative;
  isolation: isolate;
}

.page-home .index-texture {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.09;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 26%, #000 74%, transparent 100%);
  mask-image: linear-gradient(180deg, transparent 0, #000 26%, #000 74%, transparent 100%);
}

.page-home .res-grid {
  counter-reset: res;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: var(--home-cell);
}

.page-home .res-item {
  counter-increment: res;
  border-bottom: var(--home-cell);
}

.page-home .res-link {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  align-content: start;
  gap: 6px 12px;
  padding: 22px 18px;
  text-decoration: none;
  color: inherit;
}

.page-home .res-link::before {
  content: counter(res, decimal-leading-zero);
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold-2);
  padding-top: 3px;
}

.page-home .res-name {
  grid-column: 2;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink);
  transition: color 180ms var(--ease);
}

.page-home .res-desc {
  grid-column: 2;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--rock);
}

.page-home .res-link:hover .res-name,
.page-home .res-link:focus-visible .res-name {
  color: var(--aurora-2);
}

/* ---------- 版本条 ---------- */

.page-home .band--version {
  background: var(--deep);
  color: var(--on-dark);
  padding-block: clamp(40px, 5vw, 64px);
}

.page-home .ver-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-home .ver-kicker {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--on-dark-3);
}

.page-home .ver-code {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 600;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
}

.page-home .ver-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.35;
  color: var(--on-dark);
}

.page-home .ver-text {
  margin: 0 0 22px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--on-dark-2);
}

.page-home .ver-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.page-home .ver-figure {
  margin: 0;
  border: var(--hair-dark);
  max-width: 260px;
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

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

/* ---------- 地域段落 ---------- */

.page-home .band--land {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 360px;
  overflow: hidden;
}

.page-home .land-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-home .band--land::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--ink) 0%, rgba(11, 14, 19, 0.68) 42%, rgba(11, 14, 19, 0.94) 100%);
}

.page-home .land-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-block: clamp(64px, 10vw, 130px);
  color: var(--on-dark);
}

.page-home .land-coord {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--on-dark-3);
}

.page-home .land-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.3;
  color: var(--on-dark);
}

.page-home .land-text {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--on-dark-2);
}

/* ---------- 常用入口 ---------- */

.page-home .band--quick {
  background: var(--deep-2);
  color: var(--on-dark);
  padding-block: clamp(52px, 7vw, 96px);
}

.page-home .band--quick .sec-title {
  color: var(--on-dark);
}

.page-home .band--quick .sec-index {
  color: var(--gold);
}

.page-home .band--quick .sec-note {
  color: var(--on-dark-2);
}

.page-home .quick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--home-rule);
}

.page-home .quick-row {
  border-bottom: var(--home-rule);
}

.page-home .quick-link {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 24px;
  gap: 8px 14px;
  padding: 24px 0;
  text-decoration: none;
  color: inherit;
  transition: color 180ms var(--ease);
}

.page-home .quick-num {
  grid-column: 1;
  grid-row: 1;
  font-size: 13px;
  letter-spacing: 0.12em;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
}

.page-home .quick-name {
  grid-column: 2;
  grid-row: 1;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--on-dark);
}

.page-home .quick-meta {
  grid-column: 2;
  grid-row: 2;
  font-size: 14px;
  line-height: 1.8;
  color: var(--on-dark-2);
}

.page-home .quick-arrow {
  grid-column: 3;
  grid-row: 1 / span 2;
  align-self: center;
  font-size: 15px;
  color: var(--on-dark-3);
  transition: color 180ms var(--ease);
}

.page-home .quick-link:hover .quick-arrow,
.page-home .quick-link:focus-visible .quick-arrow {
  color: var(--aurora);
}

.page-home .quick-link:hover .quick-name,
.page-home .quick-link:focus-visible .quick-name {
  color: var(--aurora);
}

.page-home .quick-link:focus-visible {
  outline: 2px solid var(--aurora);
  outline-offset: 4px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-home .res-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .res-item {
    border-right: var(--home-cell);
  }

  .page-home .res-item:nth-child(2n) {
    border-right: 0;
  }
}

@media (min-width: 880px) {
  .page-home .hero-annot {
    display: block;
  }

  .page-home .hero-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: 24px;
    row-gap: 0;
    align-items: start;
  }

  .page-home .hero-copy {
    grid-column: 1 / 7;
  }

  .page-home .hero-figure {
    grid-column: 8 / -1;
    margin-top: 8px;
  }

  .page-home .seg-panel-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-home .seg-go {
    padding-top: 4px;
  }

  .page-home .ver-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: 56px;
  }

  .page-home .ver-figure {
    justify-self: end;
  }
}

@media (min-width: 1040px) {
  .page-home .res-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .res-item:nth-child(2n) {
    border-right: var(--home-cell);
  }

  .page-home .res-item:nth-child(3n) {
    border-right: 0;
  }

  .page-home .res-link {
    padding: 26px 22px;
  }
}

@media (min-width: 760px) {
  .page-home .quick-link {
    grid-template-columns: 60px minmax(0, 260px) minmax(0, 1fr) 24px;
    align-items: baseline;
  }

  .page-home .quick-num {
    grid-column: 1;
    grid-row: 1;
  }

  .page-home .quick-name {
    grid-column: 2;
    grid-row: 1;
  }

  .page-home .quick-meta {
    grid-column: 3;
    grid-row: 1;
  }

  .page-home .quick-arrow {
    grid-column: 4;
    grid-row: 1;
    align-self: baseline;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .seg-tab::after,
  .page-home .res-name,
  .page-home .quick-arrow,
  .page-home .quick-name,
  .page-home .go-link {
    transition: none;
  }
}