/* ===== 首页 · page-home ===== */

.page-home {
  --home-cut: 18px;
  --home-gap: clamp(64px, 9vw, 116px);
  --home-paper-ink: #14181F;
  --home-paper-sub: rgba(20, 24, 31, 0.62);
  display: block;
}

.page-home .home-section__lead {
  max-width: 62ch;
  margin: 14px 0 0;
  color: var(--nebula);
  font-size: 1rem;
  line-height: 1.8;
}

/* ---------- 首屏 ---------- */

.page-home .home-hero {
  position: relative;
  padding: clamp(20px, 3vw, 40px) 0 var(--home-gap);
  overflow: hidden;
}

.page-home .home-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(34px, 5vw, 64px);
  align-items: start;
}

.page-home .home-hero__crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--nebula);
}

.page-home .home-hero__crumb-sep {
  color: var(--line-mid);
}

.page-home .home-hero__eyebrow {
  margin: 0;
  color: var(--rail-cyan);
}

.page-home .home-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5.6vw, 3.5rem);
  line-height: 1.22;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-home .home-hero__title em {
  font-style: normal;
  color: var(--gold-soft);
}

.page-home .home-hero__lead {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: #b9c2d6;
}

.page-home .home-hero__lead[data-lang-block="en"] {
  display: none;
}

html[data-lang="en"] .page-home .home-hero__lead[data-lang-block="en"] {
  display: block;
}

html[data-lang="en"] .page-home .home-hero__lead[data-lang-block="zh"] {
  display: none;
}

/* 三条主入口 */

.page-home .home-paths {
  list-style: none;
  margin: clamp(32px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-home .home-path__link {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 18px;
  row-gap: 6px;
  padding: 22px 24px 20px;
  background: var(--indigo);
  color: var(--paper);
  text-decoration: none;
  transition: background-color 0.45s var(--ease);
}

.page-home .home-path--a .home-path__link {
  clip-path: polygon(var(--home-cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--home-cut));
}

.page-home .home-path--b .home-path__link {
  clip-path: polygon(0 0, calc(100% - var(--home-cut)) 0, 100% var(--home-cut), 100% 100%, 0 100%);
}

.page-home .home-path--c .home-path__link {
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--home-cut) 100%, 0 calc(100% - var(--home-cut)));
}

.page-home .home-path__link::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: var(--rail-cyan);
  transform: scaleY(0.28);
  transform-origin: top;
  transition: transform 0.5s var(--ease);
}

.page-home .home-path__link:hover,
.page-home .home-path__link:focus-visible {
  background: #16223f;
}

.page-home .home-path__link:hover::before,
.page-home .home-path__link:focus-visible::before {
  transform: scaleY(1);
}

.page-home .home-path__link:focus-visible {
  outline: 2px solid var(--cyan-bright);
  outline-offset: -2px;
}

.page-home .home-path__index {
  grid-row: 1 / span 2;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--star-gold);
  font-variant-numeric: tabular-nums;
}

.page-home .home-path__title {
  grid-column: 2;
  font-family: var(--font-display);
  font-size: 1.1875rem;
  line-height: 1.4;
  color: var(--paper);
}

.page-home .home-path__desc {
  grid-column: 2;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--nebula);
  transition: color 0.4s var(--ease);
}

.page-home .home-path__link:hover .home-path__desc,
.page-home .home-path__link:focus-visible .home-path__desc {
  color: #9aa7c2;
}

.page-home .home-path__go {
  grid-column: 2;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--rail-cyan);
}

.page-home .home-hero__note {
  margin: 26px 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--nebula);
}

/* 首屏右侧视觉 */

.page-home .home-hero__visual {
  position: relative;
  padding-bottom: 52px;
}

.page-home .home-hero__frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-home .home-hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.72) brightness(0.7);
}

.page-home .home-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 88% at 68% 22%, rgba(53, 214, 224, 0.22), transparent 62%);
  pointer-events: none;
}

.page-home .home-hero__cap {
  position: absolute;
  left: 20px;
  bottom: 18px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--gold-soft);
}

.page-home .home-orbit {
  position: absolute;
  right: -6%;
  bottom: 6%;
  width: min(58%, 300px);
  height: auto;
  z-index: 3;
  pointer-events: none;
}

.page-home .home-orbit__ring {
  fill: none;
  stroke: var(--line-mid);
  stroke-width: 1;
}

.page-home .home-orbit__ring--mid {
  stroke: rgba(232, 180, 74, 0.34);
  stroke-dasharray: 4 8;
}

.page-home .home-orbit__path {
  fill: none;
  stroke: var(--rail-cyan);
  stroke-width: 1.25;
  stroke-dasharray: 520;
  stroke-dashoffset: 520;
  animation: home-orbit-draw 2.6s var(--ease) 0.3s forwards;
}

.page-home .home-orbit__dot {
  fill: var(--cyan-bright);
}

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

.page-home .home-mini-rail {
  list-style: none;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8px;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  align-items: center;
  counter-reset: rail;
}

.page-home .home-mini-rail li {
  position: relative;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--nebula);
}

.page-home .home-mini-rail li::before {
  content: "";
  position: absolute;
  top: -11px;
  left: 50%;
  width: 7px;
  height: 7px;
  margin-left: -3.5px;
  border-radius: 50%;
  background: var(--indigo);
  border: 1px solid var(--rail-cyan);
}

.page-home .home-mini-rail li::after {
  content: "";
  position: absolute;
  top: -8px;
  left: 50%;
  right: -50%;
  height: 1px;
  background: var(--line-soft);
}

.page-home .home-mini-rail li:last-child::after {
  display: none;
}

/* ---------- 六步开通 ---------- */

.page-home .home-steps {
  padding: var(--home-gap) 0;
  background: linear-gradient(180deg, #070B18 0%, #101A33 58%, #070B18 100%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-home .home-steps__head h2,
.page-home .home-reach__text h2,
.page-home .home-version__text h2,
.page-home .home-contact__text h2 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  line-height: 1.34;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-home .home-timeline {
  list-style: none;
  margin: clamp(36px, 5vw, 58px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-home .home-step {
  position: relative;
  padding: 30px 4px 26px;
  border-top: 1px solid var(--line-mid);
  transition: background-color 0.45s var(--ease);
}

.page-home .home-step::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 4px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--indigo);
  border: 1px solid var(--rail-cyan);
  transition: background-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.page-home .home-step:hover::before,
.page-home .home-step:focus-within::before {
  background: var(--cyan-bright);
  box-shadow: 0 0 0 5px rgba(53, 214, 224, 0.14);
}

.page-home .home-step__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--star-gold);
  font-variant-numeric: tabular-nums;
}

.page-home .home-step__name {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 1.125rem;
  line-height: 1.45;
  color: var(--paper);
}

.page-home .home-step__note {
  margin: 10px 0 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--nebula);
}

.page-home .home-step__prep {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line-soft);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgba(107, 119, 145, 0.86);
}

.page-home .home-steps__media {
  margin: clamp(36px, 5vw, 56px) 0 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.page-home .home-steps__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.7) brightness(0.78);
}

.page-home .home-steps__foot {
  margin: 26px 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--nebula);
}

/* ---------- 覆盖区域与类目 ---------- */

.page-home .home-reach {
  padding: var(--home-gap) 0;
}

.page-home .home-reach__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 56px);
  align-items: start;
}

.page-home .home-reach__stats {
  margin: clamp(26px, 3.4vw, 36px) 0 clamp(26px, 3.4vw, 34px);
  border-top: 1px solid var(--line-soft);
}

.page-home .home-reach__stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-home .home-reach__stat dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--nebula);
}

.page-home .home-reach__stat dd {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
  color: #c3ccdd;
}

.page-home .home-reach__stat .num {
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--gold-soft);
  font-variant-numeric: tabular-nums;
}

.page-home .home-reach__figure {
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-home .home-reach__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.68) brightness(0.72);
}

.page-home .home-reach__caption {
  margin: 16px 0 0;
  font-size: 0.8125rem;
  line-height: 1.75;
  letter-spacing: 0.02em;
  color: var(--nebula);
}

/* ---------- 季度版本标记 ---------- */

.page-home .home-version {
  padding: var(--home-gap) 0;
  background: var(--indigo);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-home .home-version__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 52px);
  align-items: start;
}

.page-home .home-version__list {
  list-style: none;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-home .home-version__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 0 16px 18px;
  border-left: 2px solid var(--gold-line);
}

.page-home .home-version__badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--star-gold);
}

.page-home .home-version__desc {
  font-size: 0.9375rem;
  line-height: 1.78;
  color: #b9c2d6;
}

.page-home .home-version__en {
  display: none;
  margin: clamp(24px, 3vw, 32px) 0 0;
  padding: 20px 22px;
  border: 1px dashed var(--line-mid);
  font-size: 0.875rem;
  line-height: 1.75;
  color: #a9b4cb;
}

html[data-lang="en"] .page-home .home-version__en {
  display: block;
}

.page-home .home-version__en-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--rail-cyan);
}

.page-home .home-version__en p {
  margin: 0 0 8px;
}

.page-home .home-version__en p:last-child {
  margin-bottom: 0;
  color: var(--gold-soft);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.page-home .home-version__foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--nebula);
}

.page-home .home-version__aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.page-home .home-version__aside-note {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--nebula);
}

.page-home .home-version__figure {
  margin: 0;
  width: min(100%, 260px);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-home .home-version__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.7) brightness(0.8);
}

/* ---------- 联系 ---------- */

.page-home .home-contact {
  padding: var(--home-gap) 0;
}

.page-home .home-contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 56px);
  align-items: start;
}

.page-home .home-contact__topics {
  margin: clamp(22px, 3vw, 30px) 0 0;
}

.page-home .home-contact__topics .tick {
  color: #b9c2d6;
  line-height: 1.78;
}

.page-home .home-contact__more {
  margin: 22px 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--nebula);
}

.page-home .home-contact__card {
  padding: clamp(26px, 3.6vw, 42px);
  background: var(--paper);
  color: var(--home-paper-ink);
  clip-path: polygon(var(--home-cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--home-cut));
}

.page-home .home-contact__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--home-paper-sub);
}

.page-home .home-contact__value {
  margin: 8px 0 20px;
  font-family: var(--font-mono);
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--home-paper-ink);
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-home .home-contact__value--addr {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.72;
}

.page-home .home-contact__copy {
  margin: -6px 0 24px;
}

.page-home .home-contact__note {
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid var(--paper-dim);
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--home-paper-sub);
}

/* ---------- 右侧刻度带 ---------- */

.page-home .home-rail {
  display: none;
}

@media (min-width: 1280px) {
  .page-home .home-rail {
    display: flex;
    position: fixed;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    flex-direction: column;
    align-items: center;
    gap: 12px;
    z-index: 2;
    pointer-events: none;
  }

  .page-home .home-rail__line {
    width: 1px;
    height: 34px;
    background: linear-gradient(180deg, transparent, rgba(53, 214, 224, 0.42), transparent);
  }

  .page-home .home-rail__mark {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.08em;
    color: rgba(107, 119, 145, 0.7);
    font-variant-numeric: tabular-nums;
  }
}

/* ---------- 中屏与桌面 ---------- */

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

  .page-home .home-path--c {
    grid-column: 1 / -1;
  }

  .page-home .home-version__item {
    grid-template-columns: 168px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-home .home-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(40px, 5vw, 76px);
  }

  .page-home .home-paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-home .home-path--c {
    grid-column: auto;
  }

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

  .page-home .home-step {
    padding: 30px 22px 28px 4px;
  }

  .page-home .home-step:not(:nth-child(3n)) {
    border-right: 1px solid transparent;
  }
}

@media (min-width: 1120px) {
  .page-home .home-timeline {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-home .home-step {
    padding: 32px 16px 30px 4px;
  }

  .page-home .home-step__name {
    font-size: 1.0625rem;
  }

  .page-home .home-step__note {
    font-size: 0.875rem;
  }

  .page-home .home-reach__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-home .home-reach__media {
    padding-top: 34px;
  }

  .page-home .home-version__grid {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 0.42fr);
  }

  .page-home .home-version__aside {
    align-items: flex-end;
    padding-top: 12px;
  }

  .page-home .home-version__figure {
    width: min(100%, 300px);
  }

  .page-home .home-contact__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
  }
}

/* ---------- 降低动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-home .home-orbit__path {
    animation: none;
    stroke-dashoffset: 0;
  }

  .page-home .home-path__link,
  .page-home .home-path__link::before,
  .page-home .home-step::before {
    transition-duration: 0.15s;
  }
}