.page-home {
  --home-rail-min: 300px;
  --home-rail-ratio: 36%;
  --home-glass-line: rgba(213, 220, 232, 0.16);
  --home-gold-line: rgba(192, 138, 46, 0.38);
  --home-dark-line: rgba(213, 220, 232, 0.14);
  background: var(--paper);
  color: var(--ink-soft);
  overflow-x: clip;
}

.page-home .home-split {
  box-sizing: border-box;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  width: 100%;
  max-width: var(--frame);
  margin-inline: auto;
  padding: clamp(16px, 3vw, 32px) var(--pad-x) 0;
}

.page-home .home-split *,
.page-home .home-split *::before,
.page-home .home-split *::after {
  box-sizing: border-box;
}

/* ── 左栏：身份与版本状态 ───────────────────────── */

.page-home .home-rail {
  min-width: 0;
}

.page-home .home-rail__glass {
  padding: clamp(22px, 2.6vw, 34px);
  border: 1px solid var(--home-glass-line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 90% at 0% 0%, rgba(30, 46, 74, 0.96) 0%, rgba(16, 28, 48, 0.99) 62%),
    var(--ink);
  color: var(--on-dark);
  box-shadow: 8px 8px 0 rgba(231, 218, 196, 0.55);
}

.page-home .home-rail__ctx {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--on-dark-dim);
}

.page-home .home-rail__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--jade);
  box-shadow: 0 0 0 3px rgba(31, 122, 107, 0.22);
  flex: none;
}

.page-home .home-rail__h1 {
  margin: 14px 0 12px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(28px, 6.4vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--on-dark);
}

.page-home .home-rail__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--on-dark-dim);
}

.page-home .home-state {
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--home-gold-line);
}

.page-home .home-state__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--home-dark-line);
  margin: 0;
}

.page-home .home-state__k {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--on-dark-dim);
}

.page-home .home-state__v {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  letter-spacing: 0.02em;
}

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

.page-home .home-state__v--test {
  color: var(--jade-soft);
}

.page-home .home-state__v--date {
  font-size: 13px;
  color: var(--on-dark);
}

.page-home .home-state__row--test .home-state__k::after {
  content: " · 提前体验";
  letter-spacing: 0.06em;
  color: var(--jade-soft);
}

.page-home .home-index {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--home-gold-line);
}

.page-home .home-index__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--on-dark-dim);
}

.page-home .home-index .chapter-index {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: home-chapter;
}

.page-home .home-index .chapter-index li {
  margin: 0;
}

.page-home .home-index .chapter-index a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0 8px 10px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--on-dark-dim);
  text-decoration: none;
  transition: color 0.25s ease, border-color 0.25s ease, padding-left 0.25s ease;
}

.page-home .home-index .chapter-index a:hover {
  color: var(--on-dark);
}

.page-home .home-index .chapter-index a[aria-current="true"] {
  color: var(--on-dark);
  border-left-color: var(--crimson);
  padding-left: 14px;
}

.page-home .home-index .chapter-index .chapter-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
  flex: none;
}

/* ── 右栏：主阅读区 ─────────────────────────────── */

.page-home .home-main {
  min-width: 0;
  background: var(--paper);
  padding-bottom: clamp(36px, 6vw, 72px);
}

.page-home .home-main > section {
  scroll-margin-top: calc(var(--header-h) + 20px);
  min-width: 0;
}

.page-home .home-open,
.page-home .home-route,
.page-home .home-updates,
.page-home .home-channels,
.page-home .home-scale,
.page-home .home-ask {
  padding-block: clamp(38px, 6vw, 78px);
}

.page-home .home-open {
  padding-top: clamp(4px, 1.6vw, 16px);
}

.page-home .home-sec__head {
  display: grid;
  gap: 10px;
  max-width: 54ch;
}

.page-home .home-sec__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ink-soft);
}

.page-home .home-sec__head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-home .eyebrow {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

/* 首屏导读条 */

.page-home .home-open__frame {
  position: relative;
  isolation: isolate;
  min-height: clamp(220px, 44vw, 360px);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink);
}

.page-home .home-open__map {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
  filter: saturate(0.8) contrast(1.02);
  z-index: -1;
}

.page-home .home-open__text {
  position: relative;
  display: grid;
  gap: 14px;
  align-content: center;
  padding: clamp(24px, 5vw, 52px);
  max-width: 34ch;
  min-height: clamp(220px, 44vw, 360px);
}

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

.page-home .home-open__lead {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(21px, 3.4vw, 32px);
  line-height: 1.34;
  letter-spacing: -0.01em;
  color: var(--on-dark);
}

.page-home .home-open__text .btn {
  justify-self: start;
}

/* 回家路线 */

.page-home .home-route__canvas {
  position: relative;
  margin-top: clamp(28px, 4vw, 52px);
}

.page-home .home-route__line {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.page-home .home-route__line path {
  fill: none;
  stroke: var(--crimson);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 0;
  vector-effect: non-scaling-stroke;
  opacity: 0.7;
}

@media (prefers-reduced-motion: no-preference) {
  .page-home .home-route__line path {
    animation: home-draw 0.9s cubic-bezier(0.4, 0, 0.2, 1) both;
  }
}

@keyframes home-draw {
  from { stroke-dashoffset: 1; }
  to { stroke-dashoffset: 0; }
}

.page-home .home-nodes {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(16px, 2.4vw, 30px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .home-node__link {
  display: block;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--crimson);
  border-radius: var(--radius);
  background: var(--white);
  color: inherit;
  text-decoration: none;
  box-shadow: 6px 6px 0 rgba(231, 218, 196, 0.62);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.page-home .home-node__link:hover,
.page-home .home-node__link:focus-visible {
  transform: translateY(-2px);
  border-left-color: var(--gold);
  box-shadow: 9px 10px 0 rgba(231, 218, 196, 0.9);
}

.page-home .home-node__no {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-home .home-node__title {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(21px, 2.6vw, 28px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink-soft);
}

.page-home .home-node__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}

.page-home .home-node__go {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--crimson);
}

/* 最近更新 */

.page-home .home-updates__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
  margin-top: clamp(24px, 3vw, 38px);
}

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

.page-home .home-updates__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius);
  filter: saturate(0.9);
}

.page-home .home-updates__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

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

.page-home .home-upd__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .home-upd__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold);
  padding-top: 4px;
}

.page-home .home-upd__body {
  min-width: 0;
}

.page-home .home-upd__title {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink-soft);
}

.page-home .home-upd__desc {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-home .home-upd__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-home .home-updates .btn {
  margin-top: clamp(22px, 3vw, 34px);
}

/* 通道选择 */

.page-home .home-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 28px);
  margin-top: clamp(24px, 3vw, 40px);
}

.page-home .home-chan {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.page-home .home-chan--stable {
  border-top: 3px solid var(--gold);
}

.page-home .home-chan--test {
  border-top: 3px solid var(--jade);
}

.page-home .home-chan .tag {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-home .home-chan__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(20px, 2.4vw, 25px);
  line-height: 1.3;
  color: var(--ink-soft);
}

.page-home .home-chan__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-home .home-chan__list {
  margin: auto 0 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--line);
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-home .home-chan__list li {
  position: relative;
  padding-left: 14px;
}

.page-home .home-chan__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--gold);
}

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

.page-home .home-chan__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius);
  filter: saturate(0.88);
}

.page-home .home-chan__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-home .home-channels .btn {
  margin-top: clamp(22px, 3vw, 34px);
}

/* 服务能力 */

.page-home .home-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 3.4vw, 42px) 0 0;
  padding: 1px;
  background: var(--line);
  border-radius: var(--radius);
}

.page-home .home-stat {
  background: var(--white);
  padding: clamp(18px, 2.4vw, 28px);
}

.page-home .home-stat__k {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-home .home-stat__num {
  margin: 10px 0 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
  flex-wrap: wrap;
}

.page-home .home-stat__n {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(32px, 6.4vw, 52px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink-soft);
}

.page-home .home-stat__u {
  font-size: 14px;
  color: var(--slate);
}

.page-home .home-stat__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate);
}

.page-home .home-scale__foot {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

/* 找不到的时候 */

.page-home .home-find {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-block: clamp(38px, 6vw, 78px);
  padding: clamp(30px, 5vw, 64px);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--on-dark);
}

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

.page-home .home-find__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  filter: saturate(0.6);
}

.page-home .home-find__body {
  display: grid;
  gap: 16px;
  max-width: 58ch;
}

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

.page-home .home-find__body h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(25px, 4.2vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--on-dark);
}

.page-home .home-find__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--on-dark-dim);
}

.page-home .home-find__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* 高频疑问 */

.page-home .home-ask__list {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .home-ask__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .home-ask__q {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.4;
  color: var(--ink-soft);
}

.page-home .home-ask__a {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-home .home-ask__a a {
  color: var(--crimson);
  text-decoration: underline;
  text-underline-offset: 3px;
  white-space: nowrap;
}

/* 行动区 */

.page-home .home-act {
  margin-bottom: clamp(36px, 6vw, 72px);
  padding: clamp(30px, 4.6vw, 60px);
  border-radius: var(--radius);
  background:
    linear-gradient(150deg, rgba(30, 46, 74, 0.98) 0%, rgba(16, 28, 48, 1) 70%),
    var(--ink);
  color: var(--on-dark);
}

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

.page-home .home-act__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(26px, 4.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--on-dark);
}

.page-home .home-act__paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
  margin-top: clamp(22px, 3vw, 36px);
}

.page-home .home-path {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid rgba(213, 220, 232, 0.22);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--on-dark);
  transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-home .home-path:hover,
.page-home .home-path:focus-visible {
  transform: translateY(-2px);
  border-color: var(--gold);
  background: rgba(247, 242, 232, 0.06);
}

.page-home .home-path__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-home .home-path__t {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.3;
}

.page-home .home-path__d {
  font-size: 14px;
  line-height: 1.8;
  color: var(--on-dark-dim);
}

.page-home .home-path--go {
  border-left: 3px solid var(--crimson);
}

.page-home .home-path--fix {
  border-left: 3px solid var(--jade);
}

/* ── 响应式 ─────────────────────────────────────── */

@media (min-width: 700px) {
  .page-home .home-updates__grid {
    grid-template-columns: minmax(0, 40%) minmax(0, 1fr);
  }

  .page-home .home-ask__item {
    grid-template-columns: minmax(0, 34%) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

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

@media (min-width: 820px) {
  .page-home .home-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-home .home-split {
    grid-template-columns: minmax(var(--home-rail-min), var(--home-rail-ratio)) minmax(0, 1fr);
    align-items: start;
    gap: clamp(26px, 3.4vw, 60px);
    padding-top: clamp(24px, 2.6vw, 40px);
  }

  .page-home .home-rail {
    position: sticky;
    top: calc(var(--header-h) + 16px);
    max-height: calc(100vh - var(--header-h) - 40px);
    overflow-y: auto;
    scrollbar-width: thin;
  }

  .page-home .home-rail__glass {
    box-shadow: 10px 10px 0 rgba(231, 218, 196, 0.6);
  }

  .page-home .home-open {
    padding-top: 0;
  }

  .page-home .home-nodes > li:nth-child(1) { margin-left: 0; width: 80%; }
  .page-home .home-nodes > li:nth-child(2) { margin-left: 18%; width: 82%; transform: translateY(-14px); }
  .page-home .home-nodes > li:nth-child(3) { margin-left: 2%; width: 76%; transform: translateY(-6px); }
  .page-home .home-nodes > li:nth-child(4) { margin-left: 22%; width: 78%; }
  .page-home .home-nodes > li:nth-child(5) { margin-left: 4%; width: 74%; transform: translateY(-12px); }
  .page-home .home-nodes > li:nth-child(6) { margin-left: 20%; width: 80%; transform: translateY(-4px); }
}

@media (min-width: 1080px) {
  .page-home .home-channels__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 0.72fr);
    align-items: start;
  }
}

@media (max-width: 979px) {
  .page-home .home-rail__glass {
    box-shadow: 6px 6px 0 rgba(231, 218, 196, 0.5);
  }
}
</main>