.page-home {
  --pad-inline: max(var(--gutter), calc((100% - 1240px) / 2));
  --home-hair: 1px solid rgba(183, 198, 189, .16);
  --home-sweep: linear-gradient(90deg, var(--gold-500), var(--cyan-400));
  --home-metal: linear-gradient(150deg, var(--gold-300) 0%, var(--gold-500) 52%, var(--amber-600) 100%);
  background:
    radial-gradient(720px 420px at 92% 0%, rgba(214, 168, 75, .13), transparent 68%),
    radial-gradient(620px 460px at -6% 40%, rgba(63, 242, 208, .08), transparent 70%),
    var(--ink-950);
  color: var(--bone-100);
}

.page-home a:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- hero ---------- */
.page-home .home-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(26px, 5vw, 52px) var(--pad-inline) clamp(40px, 6vw, 76px);
  overflow-x: clip;
}

.page-home .home-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -14%;
  width: min(760px, 64vw);
  height: 124%;
  background: linear-gradient(155deg, rgba(20, 80, 59, .8), rgba(5, 22, 17, 0) 70%);
  clip-path: polygon(38% 0, 100% 0, 100% 100%, 0 86%);
  pointer-events: none;
  z-index: 0;
}

.page-home .home-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-500) 0%, var(--cyan-400) 55%, transparent 100%);
  pointer-events: none;
  z-index: 2;
}

.page-home .home-hero > * {
  position: relative;
  z-index: 1;
}

.page-home .home-hero__rail {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-home .hero-stamp {
  display: grid;
  gap: 6px;
  padding: 16px 18px 18px;
  border: 1px solid rgba(214, 168, 75, .45);
  border-radius: 4px;
  background:
    repeating-linear-gradient(135deg, rgba(214, 168, 75, .05) 0 6px, transparent 6px 12px),
    linear-gradient(165deg, rgba(20, 80, 59, .55), rgba(5, 22, 17, .75));
  box-shadow: inset 0 0 0 1px rgba(5, 22, 17, .6);
}

.page-home .hero-stamp__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist-300);
  text-transform: uppercase;
}

.page-home .hero-stamp__num {
  font-family: var(--font-mono);
  font-size: clamp(58px, 15vw, 96px);
  font-weight: 700;
  line-height: .82;
  letter-spacing: -.06em;
  background: var(--home-metal);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-home .hero-stamp__text {
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist-300);
}

.page-home .hero-jump__title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--gold-500);
}

.page-home .hero-jump__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .hero-jump__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  border-left: 2px solid rgba(20, 80, 59, .9);
  color: var(--mist-300);
  font-size: 14px;
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-home .hero-jump__list a:hover,
.page-home .hero-jump__list a:focus-visible {
  color: var(--bone-100);
  border-left-color: var(--gold-500);
  background: rgba(214, 168, 75, .1);
}

.page-home .hero-jump__list .num {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan-400);
}

.page-home .home-hero__main {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-home .home-hero__main h1 {
  margin: 0;
  font-size: clamp(34px, 7.2vw, 62px);
  line-height: 1.06;
  letter-spacing: -.03em;
}

.page-home .home-hero__main .lede {
  margin: 0;
  max-width: 58ch;
  color: var(--mist-300);
}

.page-home .home-hero__main .btnrow {
  margin-top: 4px;
}

.page-home .hero-stage {
  position: relative;
  margin-top: clamp(10px, 3vw, 26px);
}

.page-home .hero-stage .imgbox {
  border: 1px solid rgba(214, 168, 75, .28);
}

.page-home .hero-stage__ghost {
  position: absolute;
  right: -4px;
  bottom: -14px;
  font-size: clamp(64px, 15vw, 150px);
  font-weight: 700;
  line-height: .78;
  letter-spacing: -.06em;
  color: rgba(5, 22, 17, .32);
  -webkit-text-stroke: 1px rgba(243, 213, 140, .5);
  pointer-events: none;
  user-select: none;
}

/* ---------- section shell ---------- */
.page-home .home-section {
  position: relative;
  padding: clamp(38px, 6vw, 76px) var(--pad-inline);
  border-top: var(--home-hair);
}

.page-home .home-section--last {
  background:
    radial-gradient(560px 320px at 88% 100%, rgba(214, 168, 75, .1), transparent 70%),
    var(--pitch-900);
  border-bottom: var(--home-hair);
}

.page-home .home-section__head {
  display: grid;
  gap: 12px;
  max-width: 720px;
  margin-bottom: clamp(22px, 3.6vw, 38px);
}

.page-home .home-section__head h2 {
  margin: 0;
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1.1;
  letter-spacing: -.03em;
}

.page-home .home-section__head > p:not(.coord) {
  margin: 0;
  color: var(--mist-300);
  font-size: 15px;
  line-height: 1.75;
}

.page-home .coord {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan-400);
}

.page-home .coord::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--home-sweep);
}

.page-home .btnrow--end {
  margin-top: clamp(20px, 3vw, 30px);
}

/* ---------- 02 version ---------- */
.page-home .version-layout {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
}

.page-home .version-cards {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-home .viewcard {
  position: relative;
  display: grid;
  gap: 10px;
  padding: clamp(18px, 2.6vw, 24px);
  border: 1px solid rgba(20, 80, 59, .9);
  border-radius: 4px;
  background: linear-gradient(165deg, rgba(10, 42, 31, .92), rgba(5, 22, 17, .92));
}

.page-home .viewcard::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-500), var(--gold-300));
}

.page-home .viewcard--wall::after {
  background: linear-gradient(90deg, var(--cyan-400), var(--gold-500));
}

.page-home .viewcard .tag {
  justify-self: start;
}

.page-home .viewcard h3 {
  margin: 0;
  font-size: clamp(17px, 2.4vw, 21px);
  letter-spacing: -.01em;
}

.page-home .viewcard__list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .viewcard__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-300);
}

.page-home .viewcard__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 8px;
  height: 1px;
  background: var(--gold-500);
}

.page-home .version-note {
  margin: 0;
  padding: 12px 14px;
  border-left: 2px solid var(--cyan-400);
  background: rgba(63, 242, 208, .06);
  font-size: 13px;
  line-height: 1.7;
  color: var(--bone-100);
}

.page-home .version-figure {
  margin: 0;
}

.page-home .version-figure .imgbox {
  border: 1px solid rgba(183, 198, 189, .18);
}

/* ---------- 03 compare ---------- */
.page-home .compare-layout {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
}

.page-home .cmp-board {
  display: grid;
  gap: 16px;
  padding: clamp(16px, 2.6vw, 26px);
  border: 1px solid rgba(214, 168, 75, .3);
  border-radius: 4px;
  background:
    repeating-linear-gradient(90deg, rgba(183, 198, 189, .05) 0 1px, transparent 1px 52px),
    linear-gradient(180deg, rgba(10, 42, 31, .9), rgba(5, 22, 17, .92));
}

.page-home .cmp-board__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: var(--home-hair);
}

.page-home .cmp-board__meta {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan-400);
}

.page-home .cmp-groups {
  display: grid;
  gap: 14px;
}

.page-home .cmp-group {
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-home .cmp-group__title {
  margin: 0;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gold-500);
}

.page-home .chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .chips li {
  padding: 4px 10px;
  border: 1px solid rgba(63, 242, 208, .32);
  border-radius: 999px;
  background: rgba(63, 242, 208, .06);
  font-size: 12px;
  line-height: 1.6;
  color: var(--bone-100);
}

.page-home .cmp-board__foot {
  margin: 0;
  padding-top: 14px;
  border-top: var(--home-hair);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-300);
}

.page-home .compare-figure {
  margin: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-home .compare-figure .imgbox {
  border: 1px solid rgba(183, 198, 189, .18);
  aspect-ratio: 3 / 2;
}

.page-home .compare-figure figcaption {
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist-300);
}

/* ---------- 04 brief ---------- */
.page-home .brief-layout {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-home .brief-list {
  display: grid;
  gap: 12px;
}

.page-home .brief {
  padding: 16px 18px;
  border-left: 2px solid var(--gold-500);
  background: linear-gradient(100deg, rgba(10, 42, 31, .88), rgba(5, 22, 17, .5));
}

.page-home .brief__tag {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan-400);
}

.page-home .brief h3 {
  margin: 0 0 6px;
  font-size: clamp(16px, 2.2vw, 19px);
}

.page-home .brief p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-300);
}

.page-home .brief-figure {
  margin: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-home .brief-figure .imgbox {
  border: 1px solid rgba(183, 198, 189, .18);
  aspect-ratio: 2 / 1;
}

.page-home .brief-figure figcaption {
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist-300);
}

/* ---------- 05 steps ---------- */
.page-home .steps {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--home-hair);
}

.page-home .steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: var(--home-hair);
}

.page-home .steps__idx {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gold-500);
  padding-top: 3px;
}

.page-home .steps h3 {
  margin: 0 0 6px;
  font-size: clamp(16px, 2.2vw, 19px);
}

.page-home .steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-300);
}

/* ---------- 06 facts ---------- */
.page-home .fact-row {
  display: grid;
  gap: 12px;
}

.page-home .fact {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  border: var(--home-hair);
  border-radius: 4px;
  background: rgba(5, 22, 17, .6);
}

.page-home .fact__num {
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--gold-300);
}

.page-home .fact__label {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist-300);
}

/* ---------- responsive ---------- */
@media (min-width: 640px) {
  .page-home .fact-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-home .brief-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-home .home-hero {
    grid-template-columns: minmax(210px, 288px) minmax(0, 1fr);
    align-items: start;
  }

  .page-home .home-hero__rail {
    position: sticky;
    top: clamp(96px, 14vh, 140px);
  }

  .page-home .version-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
    align-items: start;
  }

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

  .page-home .version-note {
    grid-column: 1 / -1;
  }

  .page-home .compare-layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-home .brief-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-home .fact-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .steps li {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 20px;
    padding: 22px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home *,
  .page-home *::before,
  .page-home *::after {
    transition: none !important;
    animation: none !important;
  }
}