.page-home {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  font-family: var(--font-display);
  color: var(--star-white);
  background:
    radial-gradient(1200px 720px at 78% -6%, rgba(123, 92, 255, .22), transparent 62%),
    radial-gradient(900px 620px at 6% 14%, rgba(0, 224, 198, .10), transparent 60%),
    var(--deep-space);
}

.page-home::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(42, 52, 104, .5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 52, 104, .5) 1px, transparent 1px);
  background-size: 84px 84px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .85), rgba(0, 0, 0, .18) 48%, transparent 78%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .85), rgba(0, 0, 0, .18) 48%, transparent 78%);
}

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

.page-home .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: clamp(16px, 3vw, 26px);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist-blue);
}

.page-home .crumb-sep {
  color: var(--grid-line);
}

/* ---------- 首屏 ---------- */

.page-home .hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 60px) 0 clamp(52px, 7vw, 96px);
}

.page-home .hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-home .hero-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .55;
}

.page-home .hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 95% at 18% 32%, rgba(11, 16, 38, .30), rgba(11, 16, 38, .93) 72%),
    linear-gradient(to right, rgba(11, 16, 38, .95), rgba(11, 16, 38, .34) 58%, rgba(11, 16, 38, .82));
}

.page-home .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
}

.page-home .hero-copy {
  max-width: 46ch;
}

.page-home .hero h1 {
  margin: 14px 0 0;
  font-size: clamp(34px, 7vw, 66px);
  line-height: 1.16;
  letter-spacing: .02em;
  font-weight: 900;
  color: var(--star-white);
}

.page-home .hero-lede {
  margin: 20px 0 0;
  font-size: clamp(16px, 2.1vw, 18px);
  line-height: 1.85;
  color: var(--star-white);
}

.page-home .hero-sub {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-blue);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

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

/* 双星入口节点 */
.page-home .star-node {
  position: relative;
  flex: 1 1 160px;
  min-width: 152px;
  display: block;
  padding: 18px 20px 18px 54px;
  border: 1px solid var(--grid-line);
  border-radius: 24px 6px 24px 6px;
  background: linear-gradient(152deg, rgba(21, 27, 61, .94), rgba(11, 16, 38, .62));
  color: var(--star-white);
  text-decoration: none;
  transition: border-color .35s var(--ease), box-shadow .35s var(--ease), transform .35s var(--ease);
}

.page-home .star-node__dot {
  position: absolute;
  left: 22px;
  top: 26px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--nebula-cyan);
  box-shadow: 0 0 0 4px rgba(0, 224, 198, .16), 0 0 18px rgba(0, 224, 198, .7);
  transition: box-shadow .35s var(--ease);
}

.page-home .star-node--alt .star-node__dot {
  background: var(--warm-gold);
  box-shadow: 0 0 0 4px rgba(255, 200, 87, .16), 0 0 18px rgba(255, 200, 87, .62);
}

.page-home .star-node__index {
  display: block;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist-blue);
}

.page-home .star-node__label {
  display: block;
  margin-top: 4px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .02em;
}

.page-home .star-node__desc {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-blue);
}

.page-home .star-node:hover,
.page-home .star-node:focus-visible {
  border-color: var(--nebula-cyan);
  box-shadow: 0 0 0 1px rgba(0, 224, 198, .35), 0 14px 32px -20px rgba(0, 224, 198, .8);
  transform: translateY(-3px);
}

.page-home .star-node--alt:hover,
.page-home .star-node--alt:focus-visible {
  border-color: var(--warm-gold);
  box-shadow: 0 0 0 1px rgba(255, 200, 87, .35), 0 14px 32px -20px rgba(255, 200, 87, .8);
}

/* 坐标图例 */
.page-home .hero-legend {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--grid-line);
  border: 1px solid var(--grid-line);
}

.page-home .hero-legend__item {
  background: rgba(11, 16, 38, .86);
  padding: 14px 16px;
}

.page-home .hero-legend dt {
  margin: 0;
  font-size: 14px;
  color: var(--nebula-cyan);
  letter-spacing: .04em;
}

.page-home .hero-legend dd {
  margin: 5px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist-blue);
}

/* ---------- 通用章节 ---------- */

.page-home .section {
  padding: clamp(52px, 8vw, 104px) 0;
}

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

.page-home .section-title {
  margin: 10px 0 0;
  font-size: clamp(24px, 4.4vw, 38px);
  line-height: 1.25;
  letter-spacing: .01em;
  font-weight: 700;
  color: var(--star-white);
}

.page-home .section-lede {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist-blue);
}

/* ---------- 双入口 ---------- */

.page-home .dual-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(26px, 3.4vw, 40px);
}

.page-home .dual-card {
  position: relative;
  padding: clamp(22px, 2.8vw, 34px);
  border-top: 2px solid var(--galaxy-violet);
  border-left: 1px solid var(--grid-line);
  border-right: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
  background: linear-gradient(160deg, rgba(21, 27, 61, .86), rgba(11, 16, 38, .5));
  scroll-margin-top: 120px;
}

.page-home .dual-card--alt {
  border-top-color: var(--warm-gold);
}

.page-home .dual-card__index {
  margin: 0;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mist-blue);
}

.page-home .dual-card__lede {
  margin: 12px 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-blue);
}

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

.page-home .dual-list li {
  display: grid;
  gap: 5px;
  padding: 13px 0;
  border-top: 1px dashed rgba(42, 52, 104, .95);
}

.page-home .dual-list__k {
  font-size: 15px;
  font-weight: 700;
  color: var(--star-white);
}

.page-home .dual-list__v {
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-blue);
}

.page-home .dual-steps {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-top: 20px;
}

.page-home .dual-steps__arrow {
  font-size: 13px;
  color: var(--mist-blue);
}

.page-home .dual-card__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist-blue);
}

.page-home .dual-figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: clamp(12px, 1.6vw, 18px);
  border: 1px solid var(--grid-line);
  background:
    radial-gradient(700px 380px at 50% 0%, rgba(123, 92, 255, .18), transparent 70%),
    rgba(5, 8, 15, .55);
}

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

.page-home .media-caption {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-blue);
}

.page-home .media-caption a {
  color: var(--nebula-cyan);
  text-decoration: none;
  background-image: linear-gradient(var(--nebula-cyan), var(--nebula-cyan));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1px;
  transition: background-size .3s var(--ease);
}

.page-home .media-caption a:hover {
  background-size: 100% 1px;
}

/* ---------- 三步路径 ---------- */

.page-home .steps {
  list-style: none;
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  grid-template-columns: minmax(0, 1fr);
  background: var(--grid-line);
  border: 1px solid var(--grid-line);
}

.page-home .step {
  position: relative;
  background: rgba(11, 16, 38, .92);
  padding: clamp(22px, 2.6vw, 32px);
}

.page-home .step-num {
  display: block;
  font-size: 14px;
  letter-spacing: .16em;
  color: var(--warm-gold);
}

.page-home .step-title {
  margin: 12px 0 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--star-white);
}

.page-home .step-body {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-blue);
}

/* ---------- 资料库 ---------- */

.page-home .section-head--split {
  max-width: none;
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1fr);
  align-items: end;
}

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

.page-home .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .chip {
  padding: 8px 16px;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--mist-blue);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-home .chip:hover {
  color: var(--star-white);
  border-color: var(--galaxy-violet);
}

.page-home .chip.is-active {
  background: rgba(0, 224, 198, .12);
  border-color: var(--nebula-cyan);
  color: var(--nebula-cyan);
}

.page-home .rail {
  position: relative;
  margin-top: clamp(24px, 3.2vw, 38px);
}

.page-home .rail-track {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scroll-behavior: smooth;
  padding: 4px 4px 18px;
  scrollbar-width: thin;
  scrollbar-color: var(--galaxy-violet) transparent;
}

.page-home .rail-track:focus-visible {
  outline: 1px solid var(--nebula-cyan);
  outline-offset: 6px;
}

.page-home .rail-track::-webkit-scrollbar {
  height: 6px;
}

.page-home .rail-track::-webkit-scrollbar-thumb {
  background: var(--galaxy-violet);
  border-radius: var(--radius-pill);
}

.page-home .rail-item {
  flex: 0 0 min(304px, 78vw);
  scroll-snap-align: start;
  padding: 22px 22px 24px;
  border-left: 3px solid var(--galaxy-violet);
  border-top: 1px solid var(--grid-line);
  border-right: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
  background: linear-gradient(165deg, rgba(21, 27, 61, .94), rgba(11, 16, 38, .74));
  transition: border-left-color .3s var(--ease), transform .3s var(--ease), background .3s var(--ease);
}

.page-home .rail-item:hover {
  border-left-color: var(--nebula-cyan);
  transform: translateY(-3px);
}

.page-home .rail-item[hidden] {
  display: none;
}

.page-home .rail-item__index {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--warm-gold);
}

.page-home .rail-item__title {
  margin: 10px 0 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--star-white);
}

.page-home .rail-item__body {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist-blue);
}

.page-home .rail-item__meta {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--grid-line);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--nebula-cyan);
}

.page-home .rail-controls {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 6px;
}

.page-home .rail-btn {
  width: 42px;
  height: 42px;
  border: 1px solid var(--grid-line);
  border-radius: 4px;
  background: rgba(21, 27, 61, .7);
  color: var(--star-white);
  font-family: var(--font-mono);
  font-size: 15px;
  cursor: pointer;
  transition: border-color .3s var(--ease), color .3s var(--ease), background-color .3s var(--ease);
}

.page-home .rail-btn:hover:not(:disabled) {
  border-color: var(--nebula-cyan);
  color: var(--nebula-cyan);
  background: rgba(0, 224, 198, .08);
}

.page-home .rail-btn:disabled {
  opacity: .32;
  cursor: default;
}

.page-home .library-map {
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: clamp(12px, 1.6vw, 18px);
  border: 1px solid var(--grid-line);
  background: linear-gradient(150deg, rgba(58, 46, 122, .3), rgba(11, 16, 38, .62));
}

.page-home .library-map img {
  display: block;
  width: 100%;
  object-fit: cover;
  border: 1px solid rgba(42, 52, 104, .75);
}

/* ---------- 设备适配 ---------- */

.page-home .devices-grid {
  display: grid;
  gap: clamp(26px, 3.8vw, 56px);
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
}

.page-home .devices-copy .section-title {
  margin-top: 10px;
}

.page-home .device-list {
  margin: clamp(22px, 2.8vw, 30px) 0 28px;
  border-top: 1px solid var(--grid-line);
}

.page-home .device-list__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--grid-line);
}

.page-home .device-list__row dt {
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--nebula-cyan);
}

.page-home .device-list__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-blue);
}

.page-home .devices-figure {
  margin: 0;
  position: relative;
  padding: clamp(14px, 2vw, 22px);
  border: 1px solid var(--grid-line);
  background:
    radial-gradient(620px 420px at 70% 12%, rgba(0, 224, 198, .14), transparent 68%),
    radial-gradient(520px 380px at 10% 90%, rgba(123, 92, 255, .2), transparent 70%),
    rgba(5, 8, 15, .6);
}

.page-home .devices-figure img {
  display: block;
  width: 100%;
  object-fit: cover;
  border: 1px solid rgba(42, 52, 104, .7);
}

/* ---------- 更新节奏 ---------- */

.page-home .cadence-list {
  list-style: none;
  margin: clamp(24px, 3.2vw, 36px) 0 0;
  padding: 0;
  border-top: 1px solid var(--grid-line);
}

.page-home .cadence-list li {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--grid-line);
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-blue);
}

.page-home .cadence-list .mono {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--warm-gold);
}

.page-home .cadence-more {
  margin: 30px 0 0;
}

/* ---------- 帮助 ---------- */

.page-home .help-grid {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(24px, 3.2vw, 36px);
}

.page-home .help-card {
  display: block;
  padding: clamp(22px, 2.8vw, 34px);
  background: rgba(21, 27, 61, .6);
  border: 1px solid var(--grid-line);
  border-bottom: 3px solid var(--galaxy-violet);
  text-decoration: none;
  color: inherit;
  transition: background-color .3s var(--ease), border-bottom-color .3s var(--ease), transform .3s var(--ease);
}

.page-home .help-card--alt {
  border-bottom-color: var(--warm-gold);
}

.page-home .help-card:hover {
  background: rgba(21, 27, 61, .92);
  border-bottom-color: var(--nebula-cyan);
  transform: translateY(-3px);
}

.page-home .help-card--alt:hover {
  border-bottom-color: var(--warm-gold);
}

.page-home .help-card__index {
  margin: 0;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mist-blue);
}

.page-home .help-card__title {
  margin: 12px 0 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--star-white);
}

.page-home .help-card__body {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-blue);
}

.page-home .help-card__go {
  display: inline-block;
  margin-top: 18px;
  font-size: 14px;
  color: var(--nebula-cyan);
  background-image: linear-gradient(var(--nebula-cyan), var(--nebula-cyan));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1px;
  transition: background-size .3s var(--ease);
}

.page-home .help-card:hover .help-card__go {
  background-size: 100% 1px;
}

.page-home .help-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 26px 0 0;
  font-size: 13px;
  color: var(--mist-blue);
}

.page-home .help-legal a {
  color: var(--mist-blue);
  text-decoration: none;
  background-image: linear-gradient(var(--nebula-cyan), var(--nebula-cyan));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1px;
  transition: color .3s var(--ease), background-size .3s var(--ease);
}

.page-home .help-legal a:hover {
  color: var(--nebula-cyan);
  background-size: 100% 1px;
}

.page-home .help-legal__sep {
  color: var(--grid-line);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-home .device-list__row {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

  .page-home .cadence-list li {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 26px;
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-home .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-home .hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    grid-template-rows: auto auto;
    align-items: start;
  }

  .page-home .hero-copy {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-home .hero-nodes {
    grid-column: 2;
    grid-row: 1;
  }

  .page-home .hero-legend {
    grid-column: 2;
    grid-row: 2;
    align-self: end;
    grid-template-columns: minmax(0, 1fr);
  }

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

  .page-home .section-head--split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }

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

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

@media (min-width: 1100px) {
  .page-home .rail-track {
    gap: 18px;
  }

  .page-home .rail-item {
    flex: 0 0 320px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .star-node,
  .page-home .rail-item,
  .page-home .help-card,
  .page-home .chip,
  .page-home .rail-btn {
    transition: none;
  }

  .page-home .rail-track {
    scroll-behavior: auto;
  }
}