.page-home {
  --home-rail-gap: 16px;
  --home-panel: rgba(13, 26, 43, 0.86);
  display: block;
  position: relative;
}

/* ---------- Hero ---------- */

.page-home .hero-stand {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: calc(var(--header-h) + 40px) 0 56px;
}

.page-home .hero-glow {
  position: absolute;
  top: -20%;
  right: -32%;
  width: min(900px, 96vw);
  height: 138%;
  background: linear-gradient(118deg, rgba(53, 242, 160, 0.30) 0%, rgba(60, 140, 255, 0.24) 44%, rgba(107, 227, 255, 0.14) 100%);
  clip-path: polygon(32% 0, 100% 0, 100% 100%, 0 100%);
  filter: blur(48px);
  pointer-events: none;
  z-index: -1;
}

.page-home .hero-grid {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-home .hero-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.6rem, 12vw, 6.2rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-home .hero-accent {
  color: var(--neon);
}

.page-home .hero-lede {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--mute);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-home .hero-side {
  display: grid;
  gap: 16px;
}

.page-home .hero-media {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4 / 3;
}

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

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

.page-home .dial a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 2px solid var(--line);
  background: var(--home-panel);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-home .dial a:hover,
.page-home .dial a:focus-visible {
  border-color: var(--neon);
  transform: translateX(4px);
}

.page-home .dial-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--neon);
  white-space: nowrap;
}

.page-home .dial-text {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--mute);
}

.page-home .dial-arrow {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--blue);
}

/* ---------- Chapters ---------- */

.page-home .chapter {
  padding: 56px 0;
  scroll-margin-top: 96px;
}

.page-home .chapter-tag {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.page-home .chapter-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--neon);
}

.page-home .chapter-rule {
  width: 40px;
  height: 2px;
  flex: none;
  background: var(--neon);
}

.page-home .chapter-en {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-home .chapter-head {
  max-width: 60ch;
}

.page-home .chapter-head .display-2 {
  margin: 0;
  color: var(--white);
}

.page-home .chapter-lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--mute);
}

.page-home .chapter-note {
  margin: 26px 0 0;
  max-width: 60ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--mute);
  padding-left: 16px;
  border-left: 2px solid var(--neon);
}

/* ---------- Path cards ---------- */

.page-home .path-grid {
  display: grid;
  gap: 16px;
  margin-top: 32px;
}

.page-home .path-card {
  position: relative;
  border: 2px solid var(--line);
  background: var(--ink-2);
  padding: 24px 22px 28px;
  box-shadow: var(--shadow-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-home .path-card:nth-child(2) {
  border-color: rgba(60, 140, 255, 0.5);
}

.page-home .path-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--blue);
  border: 1px solid rgba(60, 140, 255, 0.55);
  padding: 3px 9px;
  margin: 0;
}

.page-home .path-card h3 {
  margin: 14px 0 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
}

.page-home .path-card p {
  margin: 10px 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mute);
}

/* ---------- Split layout ---------- */

.page-home .split {
  display: grid;
  gap: 28px;
}

.page-home .split-copy .display-2 {
  margin: 0;
  color: var(--white);
}

.page-home .split-media {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.page-home .split-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-home .split-media--tall img {
  aspect-ratio: 3 / 4;
  height: 100%;
}

/* ---------- Dimension list ---------- */

.page-home .dim-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 2px solid var(--line);
}

.page-home .dim-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .dim-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--white);
}

.page-home .dim-note {
  display: block;
  margin-top: 5px;
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--mute);
}

.page-home .dim-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1rem;
  color: var(--neon);
  white-space: nowrap;
}

/* ---------- Horizontal tier band ---------- */

.page-home .band {
  position: relative;
  overflow: hidden;
  margin: 24px 0;
  padding: 60px 0 40px;
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  background: linear-gradient(180deg, rgba(13, 26, 43, 0.92) 0%, rgba(6, 11, 20, 0.96) 100%);
}

.page-home .band-visual {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  pointer-events: none;
}

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

.page-home .band .shell,
.page-home .tier-rail {
  position: relative;
  z-index: 1;
}

.page-home .band .chapter-head .display-2 {
  margin: 0;
  color: var(--white);
}

.page-home .tier-rail {
  display: flex;
  gap: var(--home-rail-gap);
  margin-top: 30px;
  padding: 4px 24px 26px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-left: 24px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-home .tier-card {
  flex: 0 0 76%;
  max-width: 300px;
  scroll-snap-align: start;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 22px 20px 24px;
  border: 2px solid var(--line);
  background: var(--home-panel);
  box-shadow: var(--shadow-soft);
}

.page-home .tier-card.is-key {
  border-color: rgba(255, 138, 61, 0.62);
  box-shadow: 0 0 0 1px rgba(255, 138, 61, 0.28), var(--shadow-soft);
}

.page-home .tier-no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--neon);
}

.page-home .tier-card.is-key .tier-no {
  color: var(--amber);
}

.page-home .tier-name {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--white);
}

.page-home .tier-stage {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mute);
}

.page-home .tier-desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--mute);
}

/* ---------- Fact list ---------- */

.page-home .fact-list {
  margin: 28px 0 0;
  display: grid;
  gap: 0;
}

.page-home .fact {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .fact:first-child {
  border-top: 1px solid var(--line);
}

.page-home .fact dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--neon);
}

.page-home .fact dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--mute);
  max-width: 52ch;
}

/* ---------- Question board ---------- */

.page-home .q-board {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .q-tile {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 18px 18px 20px;
  border: 2px solid var(--line);
  background: rgba(13, 26, 43, 0.66);
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-home .q-tile:hover {
  border-color: var(--neon);
  transform: translateY(-3px);
}

.page-home .q-idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--blue);
}

.page-home .q-tile a {
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.65;
  color: var(--white);
  text-decoration: none;
}

.page-home .q-tile a:hover {
  color: var(--neon);
}

/* ---------- Closing ---------- */

.page-home .closing {
  position: relative;
  padding: 68px 0 88px;
  overflow: hidden;
}

.page-home .closing::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(53, 242, 160, 0.12) 0%, rgba(60, 140, 255, 0.09) 100%);
  clip-path: polygon(0 0, 100% 7%, 100% 100%, 0 93%);
  pointer-events: none;
}

.page-home .closing > .shell {
  position: relative;
  z-index: 1;
}

.page-home .closing .display-2 {
  margin: 0;
  color: var(--white);
  max-width: 22ch;
}

.page-home .closing-lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mute);
}

.page-home .closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-home .closing-contact {
  margin: 28px 0 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  line-height: 1.9;
  color: var(--mute);
}

.page-home .to-top {
  position: fixed;
  right: 18px;
  bottom: 92px;
  z-index: 40;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 2px solid var(--neon);
  border-radius: 999px;
  background: rgba(6, 11, 20, 0.86);
  color: var(--neon);
  font-family: var(--font-mono);
  font-size: 17px;
  text-decoration: none;
}

/* ---------- Responsive ---------- */

@media (min-width: 700px) {
  .page-home .path-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

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

  .page-home .tier-card {
    flex-basis: 262px;
  }
}

@media (min-width: 900px) {
  .page-home .hero-stand {
    min-height: 78vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-h) + 60px) 0 84px;
  }

  .page-home .hero-stand > .shell {
    flex: 1 1 auto;
  }

  .page-home .hero-grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    column-gap: 56px;
  }

  .page-home .hero-side {
    align-content: start;
  }

  .page-home .chapter {
    padding: 96px 0;
  }

  .page-home .split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: 52px;
    align-items: center;
    margin-top: 8px;
  }

  .page-home .split--media-first {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1fr);
  }

  .page-home .band {
    padding: 76px 0 52px;
  }

  .page-home .tier-rail {
    padding-left: max(24px, calc((100vw - var(--shell)) / 2));
    padding-right: max(24px, calc((100vw - var(--shell)) / 2));
    padding-bottom: 30px;
  }

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

  .page-home .to-top {
    bottom: 28px;
  }
}

@media (min-width: 1200px) {
  .page-home .hero-side {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-home .closing {
    padding: 88px 0 108px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .dial a,
  .page-home .q-tile {
    transition: none;
  }

  .page-home .dial a:hover,
  .page-home .dial a:focus-visible,
  .page-home .q-tile:hover {
    transform: none;
  }
}