:root {
  --void: #070707;
  --ink: #0d0d0d;
  --panel: #121212;
  --raised: #1a1a1a;
  --gold: #c4a35a;
  --gold-bright: #e8c878;
  --gold-dim: #8a7340;
  --cream: #f3ead6;
  --mute: #9a8f78;
  --line: rgba(196, 163, 90, 0.32);
  --ok: #8fad6a;
  --hold: #c4a35a;
  --off: #8a6a6a;
  --max: 1140px;
  --serif: Georgia, "Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", serif;
  --sans: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--cream);
  background: var(--void);
  font-family: var(--sans);
  line-height: 1.75;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--gold-bright); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--cream); }
button { font: inherit; cursor: pointer; }
ul, ol { margin: 0; padding: 0; }

.shell { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 90;
  background: var(--gold);
  color: #111;
  padding: 8px 14px;
  font-weight: 700;
}

.skip:focus { top: 12px; }

:focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
}

.band {
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, transparent, rgba(196, 163, 90, 0.08), transparent),
    var(--ink);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mute);
}

.band-row {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 8px 0;
}

.pills { display: flex; flex-wrap: wrap; gap: 8px; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  padding: 3px 10px;
  color: var(--cream);
  letter-spacing: 0.06em;
}

.pill i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
}

.pill-hold i { background: var(--hold); }
.pill-off i { background: var(--off); }

.mast {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(7, 7, 7, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.mast.is-stuck { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
}

.mark {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--cream);
  text-decoration: none;
}

.mark img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border: 1px solid var(--gold);
  padding: 2px;
  background: #111;
}

.mark span {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.mark small {
  display: block;
  font-family: var(--sans);
  font-size: 11px;
  color: var(--mute);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lane { display: flex; align-items: center; gap: 8px; }

.lane ul {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.lane a {
  display: inline-block;
  padding: 8px 12px;
  color: var(--cream);
  text-decoration: none;
  border: 1px solid transparent;
}

.lane a:hover,
.lane a[aria-current="page"] {
  color: var(--gold-bright);
  border-color: var(--line);
}

.lane a.cta,
.btn {
  background: linear-gradient(180deg, #e8c878, #c4a35a);
  color: #1a1408;
  border: 1px solid #f0d58a;
  font-weight: 700;
  text-decoration: none;
  padding: 9px 16px;
}

.lane a.cta:hover,
.btn:hover {
  color: #111;
  filter: brightness(1.06);
}

.btn-ghost {
  display: inline-block;
  padding: 9px 16px;
  border: 1px solid var(--gold);
  color: var(--gold-bright);
  text-decoration: none;
  background: transparent;
}

.btn-ghost:hover { background: rgba(196, 163, 90, 0.1); color: var(--cream); }

.nav-toggle {
  display: none;
  background: transparent;
  color: var(--gold-bright);
  border: 1px solid var(--gold);
  padding: 8px 12px;
}

.hero,
.page-hero {
  position: relative;
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse at 20% 0%, rgba(196, 163, 90, 0.12), transparent 46%),
    var(--void);
}

.hero::before,
.hero::after,
.page-hero::before,
.page-hero::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1px solid var(--gold);
  pointer-events: none;
}

.hero::before,
.page-hero::before { top: 18px; left: max(20px, calc(50% - var(--max) / 2)); border-right: 0; border-bottom: 0; }
.hero::after,
.page-hero::after { top: 18px; right: max(20px, calc(50% - var(--max) / 2)); border-left: 0; border-bottom: 0; }

.hero-grid,
.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }

.chip {
  border: 1px solid var(--line);
  color: var(--mute);
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.chip-on { color: var(--gold-bright); border-color: var(--gold); }

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2.1rem, 4vw, 3.4rem); line-height: 1.2; color: #fff; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); color: #fff; }
h3 { font-size: 1.12rem; color: var(--cream); }

.lead { color: var(--mute); font-size: 1.05rem; max-width: 40rem; }

.acts { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 8px; }

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 36px;
  border: 1px solid var(--line);
}

.metric {
  padding: 16px 18px;
  border-right: 1px solid var(--line);
}

.metric:last-child { border-right: 0; }

.metric strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.5rem;
  color: var(--gold-bright);
}

.metric span { display: block; color: var(--mute); font-size: 13px; }

.screen,
.frame {
  margin: 0;
  border: 1px solid var(--gold);
  background: var(--panel);
  box-shadow: 0 0 0 8px rgba(196, 163, 90, 0.06);
}

.screen img,
.frame img { width: 100%; }

.screen figcaption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  color: var(--mute);
  font-size: 12px;
  letter-spacing: 0.08em;
}

section { padding: 64px 0; border-bottom: 1px solid rgba(196, 163, 90, 0.14); }

.head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 28px;
}

.head p { max-width: 34rem; color: var(--mute); margin: 0; }

.kicker {
  display: block;
  color: var(--gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 11px;
  margin-bottom: 8px;
}

.grid-4,
.grid-3,
.grid-2 {
  display: grid;
  gap: 16px;
}

.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.entry,
.folio,
.plat {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 22px 20px;
  color: inherit;
  text-decoration: none;
  position: relative;
}

.entry::before,
.folio::before,
.plat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gold);
}

.entry:hover,
.folio:hover,
.plat:hover {
  border-color: var(--gold);
  background: var(--raised);
}

.idx {
  display: inline-block;
  color: var(--gold-bright);
  font-family: var(--serif);
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.checks {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 20px 0;
}

.checks li {
  padding-left: 22px;
  position: relative;
  color: var(--mute);
}

.checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 10px;
  height: 1px;
  background: var(--gold);
}

.crumbs { color: var(--mute); font-size: 13px; margin: 0 0 16px; }
.crumbs a { color: var(--gold); text-decoration: none; }

.trail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.trail a {
  display: grid;
  gap: 4px;
  padding: 16px;
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--cream);
  background: var(--panel);
}

.trail a:hover,
.trail a.is-here {
  border-color: var(--gold);
  color: var(--gold-bright);
}

.trail .n { font-family: var(--serif); color: var(--gold); }
.trail .h { color: var(--mute); font-size: 13px; }

.vault {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  padding: 28px;
  margin-bottom: 40px;
  border: 1px solid var(--gold);
  background:
    linear-gradient(180deg, rgba(196, 163, 90, 0.08), transparent 40%),
    var(--panel);
}

.vault-list {
  list-style: none;
  display: grid;
  gap: 10px;
  color: var(--mute);
}

.vault-list li { padding-left: 16px; border-left: 1px solid var(--gold); }

.ledger {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.ledger article {
  border: 1px solid var(--line);
  background: var(--panel);
}

.ledger header {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--serif);
}

.ledger ol { padding: 16px 16px 16px 34px; color: var(--mute); }

.faq details {
  border: 1px solid var(--line);
  background: var(--panel);
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 20px;
  font-family: var(--serif);
  color: var(--cream);
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "+";
  float: right;
  color: var(--gold);
}

.faq details[open] summary::after { content: "−"; }

.faq details p {
  margin: 0;
  padding: 0 20px 18px;
  color: var(--mute);
}

.cite {
  margin: 28px 0 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  color: var(--mute);
  background: #101010;
}

footer {
  padding: 48px 0 28px;
  background: #050505;
  border-top: 1px solid var(--gold);
}

.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 28px;
}

footer h3 {
  font-size: 0.95rem;
  color: var(--gold-bright);
  margin-bottom: 12px;
}

footer ul { list-style: none; }
footer li { margin: 6px 0; }
footer p { color: var(--mute); }

.legal {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--mute);
  font-size: 13px;
}

@media (max-width: 980px) {
  .hero-grid,
  .split,
  .vault,
  .ledger,
  .grid-4,
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .metrics,
  .trail,
  .grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }
  .lane {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: #0b0b0b;
    border-bottom: 1px solid var(--gold);
    padding: 12px 20px 20px;
  }
  .lane.is-open { display: block; }
  .lane ul { flex-direction: column; align-items: stretch; }
  .hero-grid,
  .split,
  .vault,
  .ledger,
  .metrics,
  .trail,
  .grid-4,
  .grid-3,
  .grid-2,
  .foot-grid { grid-template-columns: 1fr; }
  .metric { border-right: 0; border-bottom: 1px solid var(--line); }
  .metric:last-child { border-bottom: 0; }
  .head { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}