:root {
  color-scheme: dark;
  --ink: #f3efe6;
  --muted: #aaa69e;
  --paper: #11110f;
  --panel: #191916;
  --line: #3a3933;
  --signal: #ff6438;
  --signal-soft: #ffb39d;
  --safe: #b8df82;
  --hold: #f1bf54;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --sans: Inter, "Pretendard", "Noto Sans KR", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
}

a { color: inherit; }

button,
select { font: inherit; }

.skip-link {
  position: fixed;
  z-index: 30;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-180%);
}

.skip-link:focus { transform: translateY(0); }

.topbar {
  position: sticky;
  z-index: 20;
  top: 0;
  display: grid;
  grid-template-columns: minmax(12rem, 1fr) auto minmax(7rem, 1fr);
  align-items: center;
  min-height: 4.75rem;
  padding: 0.65rem clamp(1rem, 3vw, 3.5rem);
  border-bottom: 1px solid var(--line);
  background: rgb(17 17 15 / 94%);
  backdrop-filter: blur(12px);
}

.brand {
  display: grid;
  grid-template-columns: 2.5rem auto;
  column-gap: 0.7rem;
  align-items: center;
  width: max-content;
  text-decoration: none;
}

.brand > span {
  grid-row: 1 / 3;
  display: grid;
  place-items: center;
  width: 2.5rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--signal);
  color: #170b07;
  font: 900 0.8rem/1 var(--mono);
}

.brand strong { align-self: end; letter-spacing: 0.12em; }
.brand small { align-self: start; color: var(--muted); font: 600 0.58rem/1.2 var(--mono); letter-spacing: 0.08em; }

.topbar nav { display: flex; gap: 0.2rem; }

.topbar nav a,
.language-switch button {
  border: 1px solid transparent;
  padding: 0.55rem 0.7rem;
  color: var(--muted);
  background: transparent;
  font: 700 0.69rem/1 var(--mono);
  letter-spacing: 0.06em;
  text-decoration: none;
}

.topbar nav a:hover,
.topbar nav a[aria-current="page"],
.language-switch button[aria-pressed="true"] { border-color: var(--signal); color: var(--ink); }

.language-switch { justify-self: end; display: flex; }

main { overflow: clip; }

.hero {
  display: grid;
  grid-template-columns: minmax(6rem, 0.28fr) minmax(0, 1.45fr) minmax(13rem, 0.55fr);
  gap: clamp(1.5rem, 4vw, 5rem);
  align-items: stretch;
  min-height: 37rem;
  padding: clamp(3rem, 8vw, 7.5rem) clamp(1rem, 5vw, 5.5rem);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, transparent 49.8%, rgb(255 255 255 / 4%) 50%, transparent 50.2%),
    linear-gradient(180deg, #171713, #10100e);
}

.stage-number { align-self: start; border-top: 4px solid var(--signal); padding-top: 0.8rem; }
.stage-number strong { display: block; color: var(--signal); font: 900 clamp(4rem, 9vw, 8rem)/0.85 var(--mono); }
.stage-number span { font: 700 0.8rem/1 var(--mono); letter-spacing: 0.2em; }

.hero-copy { align-self: center; max-width: 58rem; }
.eyebrow,
.section-heading > p { color: var(--signal); font: 800 0.72rem/1.3 var(--mono); letter-spacing: 0.14em; }
.hero h1 { margin: 1rem 0 1.4rem; font-size: clamp(2.5rem, 6vw, 6.7rem); line-height: 0.98; letter-spacing: -0.055em; }
.hero h1 span,
.hero h1 em { display: block; }
.hero h1 em { color: var(--signal-soft); font-style: normal; }
.hero-copy > p:not(.eyebrow) { max-width: 48rem; color: #cbc6bb; font-size: clamp(1rem, 1.4vw, 1.22rem); }

.hero-chips { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 2rem; }
.hero-chips span,
.tag-list span {
  border: 1px solid var(--line);
  padding: 0.38rem 0.55rem;
  color: var(--muted);
  font: 700 0.62rem/1 var(--mono);
  letter-spacing: 0.04em;
}

.stop-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--signal);
  padding: 1.5rem;
  background: #26140e;
}

.stop-card span,
.stop-card small { font: 800 0.7rem/1.2 var(--mono); letter-spacing: 0.12em; }
.stop-card strong { color: var(--signal); font: 900 clamp(2.2rem, 4vw, 4.4rem)/0.9 var(--mono); }

.metric-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-bottom: 1px solid var(--line);
}

.metric-strip article,
.gap-summary article { min-width: 0; padding: 1.4rem clamp(0.8rem, 2vw, 2rem); border-right: 1px solid var(--line); }
.metric-strip article:last-child,
.gap-summary article:last-child { border-right: 0; }
.metric-strip span,
.gap-summary span { color: var(--signal); font: 900 clamp(2rem, 4vw, 4.5rem)/1 var(--mono); }
.metric-strip p,
.gap-summary p { margin: 0.4rem 0 0; color: var(--muted); font-size: 0.8rem; }

.validation-bar {
  padding: 0.75rem 1rem;
  background: var(--safe);
  color: #152008;
  text-align: center;
  font: 800 0.72rem/1.4 var(--mono);
  letter-spacing: 0.05em;
}

.section { padding: clamp(4rem, 8vw, 8rem) clamp(1rem, 5vw, 5.5rem); border-bottom: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: minmax(10rem, 0.4fr) minmax(0, 1.6fr); gap: clamp(1.5rem, 4vw, 5rem); margin-bottom: 3rem; }
.section-heading h2 { max-width: 66rem; margin: 0; font-size: clamp(2rem, 4.5vw, 5rem); line-height: 1.05; letter-spacing: -0.045em; }
.section-heading div > p { max-width: 54rem; color: var(--muted); }

.evidence-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.evidence-card { display: flex; flex-direction: column; min-height: 24rem; padding: 1.4rem; background: var(--panel); }
.evidence-card > span { color: var(--signal); font: 700 0.62rem/1.3 var(--mono); }
.evidence-card h3 { margin: 1rem 0; font-size: 1.4rem; }
.evidence-card blockquote { flex: 1; margin: 0 0 1.2rem; color: #d8d2c7; }
.evidence-card dl { margin: 0; }
.evidence-card dl div { display: flex; justify-content: space-between; gap: 1rem; padding: 0.45rem 0; border-top: 1px solid var(--line); }
.evidence-card dt,
.evidence-card dd { margin: 0; font: 600 0.65rem/1.4 var(--mono); }
.evidence-card dd { color: var(--muted); text-align: right; }
.evidence-card a { margin-top: 1rem; color: var(--signal-soft); font-weight: 750; }

.layer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.layer-grid article,
.layer-grid aside { min-height: 14rem; border: 1px solid var(--line); padding: 1.4rem; background: var(--panel); }
.layer-grid article > span { color: var(--signal); font: 800 0.7rem/1 var(--mono); }
.layer-grid h3 { margin: 2rem 0 0.5rem; font-size: 1.45rem; }
.layer-grid article p,
.layer-grid strong,
.layer-grid aside b { font: 700 0.68rem/1.5 var(--mono); }
.layer-grid article strong { display: block; margin-top: 1.8rem; color: var(--hold); }
.layer-grid aside { grid-column: 1 / -1; min-height: 0; border-color: var(--signal); background: #26140e; }
.layer-grid aside strong { display: block; margin: 0.5rem 0; color: var(--signal); font-size: clamp(1.8rem, 4vw, 4rem); }
.layer-grid aside p { margin-bottom: 0; }

.ledger-tools { display: flex; gap: 1rem; align-items: center; margin-bottom: 1rem; }
.ledger-tools label { font-weight: 750; }
.ledger-tools select { min-width: min(22rem, 55vw); border: 1px solid var(--line); border-radius: 0; padding: 0.65rem; background: var(--panel); color: var(--ink); }
.ledger-tools > span { margin-left: auto; color: var(--muted); }
.table-scroll { overflow: auto; border: 1px solid var(--line); }
table { width: 100%; min-width: 74rem; border-collapse: collapse; }
caption { padding: 0.8rem; color: var(--muted); text-align: left; font-size: 0.74rem; }
th,
td { padding: 1rem; border-top: 1px solid var(--line); border-right: 1px solid var(--line); text-align: left; vertical-align: top; }
thead th { position: sticky; z-index: 1; top: 0; background: #24231f; color: var(--signal-soft); font: 700 0.67rem/1.3 var(--mono); letter-spacing: 0.06em; }
tbody th { width: 23%; }
tbody td:nth-child(2) { width: 19%; }
tbody td:nth-child(3) { width: 17%; }
tbody td:nth-child(4) { width: 27%; }
tbody td:nth-child(5) { width: 14%; }
tbody strong,
tbody small,
tbody code,
tbody a { display: block; }
tbody th strong { font-size: 0.92rem; }
tbody small { margin-top: 0.35rem; color: var(--muted); font-size: 0.7rem; }
tbody code { margin-top: 0.35rem; color: var(--muted); font-size: 0.66rem; }
tbody a { margin-top: 0.5rem; color: var(--signal-soft); font-size: 0.72rem; }
.source-state { color: var(--safe); font: 700 0.64rem/1.4 var(--mono); }
.pending { color: var(--hold); font: 800 0.76rem/1.3 var(--mono); }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.tag-list span { padding: 0.28rem 0.38rem; font-size: 0.56rem; }
.tag-list--relation span { border-color: #706b60; color: #d2cec5; }
tr[hidden] { display: none; }

.flag-metrics { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.flag-metrics article { padding: 1.2rem; background: var(--panel); }
.flag-metrics span { color: var(--signal); font: 900 2.4rem/1 var(--mono); }
.flag-metrics p { color: var(--muted); font: 650 0.65rem/1.4 var(--mono); text-transform: uppercase; }
.review-axis-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.7rem; margin-top: 1.5rem; }
.review-axis-grid article { display: grid; grid-template-columns: 2.5rem 1fr; gap: 0.3rem 0.8rem; align-items: center; border: 1px solid var(--line); padding: 1rem; }
.review-axis-grid span { grid-row: 1 / 3; color: var(--signal); font: 800 0.7rem/1 var(--mono); }
.review-axis-grid strong { font: 750 0.78rem/1.3 var(--mono); }
.review-axis-grid small { color: var(--hold); font: 650 0.6rem/1.2 var(--mono); }

.gap-summary { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); }
.distribution-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.6rem; padding: 0; margin: 1.5rem 0 0; list-style: none; }
.distribution-list li { display: grid; grid-template-columns: 1fr auto; gap: 0.3rem 1rem; border: 1px solid var(--line); padding: 1rem; }
.distribution-list span { color: var(--muted); font: 650 0.65rem/1.3 var(--mono); }
.distribution-list b { grid-column: 1 / -1; color: var(--signal); font: 800 0.65rem/1.3 var(--mono); }

.next-stage { background: #171713; }
.handoff { display: flex; justify-content: space-between; gap: 1rem; align-items: center; border-top: 1px solid var(--signal); padding-top: 1.5rem; }
.handoff a { color: var(--signal-soft); font-weight: 750; }
.handoff strong { font: 800 0.75rem/1.3 var(--mono); }

footer { display: flex; justify-content: space-between; gap: 2rem; padding: 2.5rem clamp(1rem, 5vw, 5.5rem); }
footer div { display: flex; flex-direction: column; }
footer span { color: var(--muted); font-size: 0.72rem; }
footer b { color: var(--signal); font: 800 0.7rem/1.3 var(--mono); }

:focus-visible { outline: 3px solid var(--signal-soft); outline-offset: 3px; }

@media (max-width: 960px) {
  .topbar { grid-template-columns: 1fr auto; }
  .topbar nav { grid-column: 1 / -1; grid-row: 2; overflow-x: auto; justify-content: center; }
  .hero { grid-template-columns: 6rem 1fr; min-height: 0; }
  .stop-card { grid-column: 1 / -1; min-height: 13rem; }
  .evidence-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-strip { grid-template-columns: repeat(3, 1fr); }
  .metric-strip article:nth-child(3) { border-right: 0; }
  .flag-metrics { grid-template-columns: repeat(3, 1fr); }
  .distribution-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .topbar { position: static; }
  .brand small { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 3rem; }
  .stage-number { width: max-content; }
  .stop-card { grid-column: auto; }
  .metric-strip,
  .gap-summary { grid-template-columns: repeat(2, 1fr); }
  .metric-strip article:nth-child(odd),
  .gap-summary article:nth-child(odd) { border-right: 1px solid var(--line); }
  .section-heading { grid-template-columns: 1fr; }
  .evidence-grid,
  .layer-grid,
  .flag-metrics,
  .review-axis-grid,
  .distribution-list { grid-template-columns: 1fr; }
  .evidence-card { min-height: 19rem; }
  .ledger-tools { align-items: stretch; flex-direction: column; }
  .ledger-tools select { width: 100%; max-width: none; }
  .ledger-tools > span { margin-left: 0; }
  .handoff,
  footer { align-items: flex-start; flex-direction: column; }
}

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

@media (forced-colors: active) {
  .stop-card,
  .evidence-card,
  .layer-grid article,
  .layer-grid aside,
  .distribution-list li { color: CanvasText; border-color: CanvasText; background: Canvas; box-shadow: none; }
  a,
  button,
  select { color: LinkText; border-color: ButtonText; forced-color-adjust: auto; }
  :focus-visible { outline: 3px solid Highlight; outline-offset: 3px; }
}

@page { size: A4 portrait; margin: 12mm; }

@media print {
  :root { color-scheme: light; --paper: #fff; --ink: #111; --muted: #444; --panel: #fff; --line: #aaa; --signal: #a22a0d; --signal-soft: #6e210f; --safe: #fff; --hold: #7b5200; }
  body { background: #fff; color: #111; font-size: 9pt; }
  .topbar,
  .language-switch,
  .ledger-tools,
  .skip-link { display: none !important; }
  .hero { min-height: 0; padding: 1.2cm 0; background: none; }
  .stop-card { min-height: 5cm; }
  .section { padding: 1cm 0; break-before: page; }
  .section-heading { margin-bottom: 0.6cm; }
  .section-heading h2 { font-size: 22pt; }
  .evidence-card,
  .layer-grid article,
  .layer-grid aside { break-inside: avoid; }
  .table-scroll { overflow: visible; border: 0; }
  table { min-width: 0; font-size: 7pt; }
  thead th { position: static; background: #eee; }
  th,
  td { padding: 0.25cm; }
  tbody a { text-decoration: none; }
  footer { padding: 0.8cm 0; }
}