:root {
  --paper: #f3f3eb;
  --paper-deep: #e7e8dc;
  --ink: #13211e;
  --muted: #68726c;
  --line: #cfd2c6;
  --white: #fffef8;
  --night: #0c1716;
  --night-2: #142321;
  --acid: #c7f36b;
  --coral: #ff6f4d;
  --cyan: #56c6d2;
  --violet: #a992ff;
  --gold: #e4bc52;
  --unknown: #6f7774;
  --shadow: 0 22px 60px rgba(26, 36, 32, 0.09);
  --mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.shell {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  height: 66px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 32px;
  color: var(--paper);
  background: rgba(12, 23, 22, 0.94);
  border-bottom: 1px solid rgba(255,255,255,.1);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  width: max-content;
  color: var(--paper);
  text-decoration: none;
  font: 700 11px/1 var(--mono);
  letter-spacing: .12em;
}

.brand-mark {
  width: 11px;
  height: 11px;
  background: var(--acid);
  border-radius: 2px 6px 2px 6px;
  box-shadow: 9px 0 0 -3px var(--coral);
}

nav { display: flex; gap: 28px; }
nav a {
  color: #bfc8c3;
  text-decoration: none;
  font-size: 13px;
}
nav a:hover { color: var(--acid); }

.run-state {
  justify-self: end;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: #cad2ce;
  font: 700 10px/1 var(--mono);
  letter-spacing: .1em;
}

.run-state i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 4px rgba(199,243,107,.12);
}

.hero {
  min-height: calc(100vh - 66px);
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 76px;
  align-items: center;
  padding-top: 78px;
  padding-bottom: 96px;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  width: 500px;
  height: 500px;
  right: -180px;
  top: 20px;
  border: 1px solid var(--line);
  border-radius: 50%;
  box-shadow: inset 0 0 0 80px var(--paper), inset 0 0 0 81px var(--line), inset 0 0 0 160px var(--paper), inset 0 0 0 161px var(--line);
  opacity: .65;
}

.eyebrow {
  margin: 0 0 20px;
  color: #56645d;
  font: 800 11px/1 var(--mono);
  letter-spacing: .18em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(56px, 7vw, 94px);
  line-height: .94;
  letter-spacing: -.065em;
  font-weight: 720;
}

.hero h1 em { color: var(--coral); font-style: normal; }

.lede {
  max-width: 620px;
  margin: 32px 0 0;
  color: #46534e;
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions { display: flex; gap: 12px; margin-top: 36px; }

.button {
  display: inline-flex;
  gap: 24px;
  justify-content: space-between;
  align-items: center;
  min-width: 176px;
  padding: 15px 18px;
  border: 1px solid var(--ink);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
}

.button.primary { color: var(--paper); background: var(--ink); }
.button.primary:hover { color: var(--ink); background: var(--acid); }
.button.secondary:hover { background: var(--white); }

.hero-model {
  position: relative;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  justify-content: center;
  padding: 54px;
  color: var(--paper);
  background: var(--night);
  border-radius: 190px 190px 22px 22px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-model::before {
  content: "K(P\2081, P\2082)";
  position: absolute;
  right: -18px;
  top: 56px;
  color: rgba(255,255,255,.04);
  font: 800 76px/1 var(--mono);
  transform: rotate(90deg);
}

.model-stage {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 38px 1fr auto;
  gap: 12px;
  align-items: center;
  min-height: 84px;
  padding: 17px 20px;
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 7px;
}

.model-stage strong { font: 800 13px/1 var(--mono); letter-spacing: .12em; }
.model-stage small { grid-column: 2; color: #83938c; font: 11px/1 var(--mono); }
.stage-index { color: #677b72; font: 10px/1 var(--mono); }
.model-stage.selected { border-color: rgba(199,243,107,.45); }
.model-stage.retained { border-color: rgba(255,111,77,.4); }
.model-arrow { display: none; }

.byte-run, .retained-run {
  grid-row: 1 / span 2;
  grid-column: 3;
  width: 78px;
  height: 20px;
  background: repeating-linear-gradient(90deg, #687972 0 6px, transparent 6px 9px);
}

.gate {
  grid-row: 1 / span 2;
  grid-column: 3;
  width: 72px;
  height: 34px;
  border: 1px solid var(--acid);
  border-radius: 50%;
  display: grid;
  place-items: center;
}
.gate i { width: 25px; height: 2px; background: var(--acid); transform: rotate(-35deg); }

.retained-run { display: flex; background: none; }
.retained-run i, .retained-run b { flex: 1; }
.retained-run i { background: repeating-linear-gradient(90deg, var(--coral) 0 6px, transparent 6px 9px); }
.retained-run b { background: repeating-linear-gradient(90deg, var(--cyan) 0 6px, transparent 6px 9px); }

.model-loop {
  margin-top: 5px;
  color: #80918a;
  font: 10px/1.5 var(--mono);
  text-align: center;
  letter-spacing: .05em;
}

.hero-meta {
  position: absolute;
  left: 0;
  bottom: 26px;
  display: flex;
  gap: 34px;
  color: #758079;
  font: 9px/1.4 var(--mono);
  letter-spacing: .08em;
}

.hero-meta span { display: flex; flex-direction: column; gap: 4px; }
.hero-meta b { color: var(--ink); font-weight: 700; }

.thesis-band { color: var(--paper); background: var(--coral); }
.thesis-inner { padding: 34px 0; }
.thesis-inner p { max-width: 980px; margin: 0; font-size: clamp(20px, 2.6vw, 32px); line-height: 1.35; letter-spacing: -.025em; }
.thesis-inner span { display: block; margin-bottom: 8px; color: #792513; font: 800 10px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; }

.section { padding: 120px 0; }
.section-heading {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 54px;
}
.section-heading h2 { max-width: 740px; margin: 0; font-size: clamp(36px, 4vw, 59px); line-height: 1.06; letter-spacing: -.045em; }
.section-heading > p { margin: 0; color: #5b6761; font-size: 15px; line-height: 1.75; }
.section-heading code { font: 12px/1 var(--mono); color: var(--acid); }

.evidence-grid { display: grid; grid-template-columns: minmax(0, 1fr) 230px; gap: 18px; }
.chart-card { padding: 30px; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); }
.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 30px; margin-bottom: 20px; }
.card-head h3 { margin: 6px 0 0; font-size: 20px; letter-spacing: -.02em; }
.chart-kicker { margin: 0; color: #74817a; font: 800 9px/1 var(--mono); letter-spacing: .14em; }
.legend { display: flex; gap: 18px; color: #67736d; font: 10px/1 var(--mono); }
.legend span { display: inline-flex; align-items: center; gap: 7px; }
.swatch { width: 17px; height: 3px; display: inline-block; }
.swatch.task { background: var(--coral); }
.swatch.control { background: var(--cyan); }

.chart { width: 100%; height: 350px; }
.chart svg { width: 100%; height: 100%; overflow: visible; }
.axis-line { stroke: #cfd4cb; stroke-width: 1; }
.grid-line { stroke: #e4e6de; stroke-width: 1; }
.axis-label { fill: #758078; font: 10px var(--mono); }
.axis-title { fill: #88928d; font: 9px var(--mono); letter-spacing: .08em; }
.series-path { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.series-run { opacity: .19; stroke-width: 1.4; }
.series-mean { stroke-width: 3; }
.series-point { stroke: var(--white); stroke-width: 2; }
.chart-note { margin: 5px 0 0; color: #89918d; font: 10px/1.5 var(--mono); }

.metric-stack { display: grid; gap: 12px; }
.metric-card { min-height: 128px; display: flex; flex-direction: column; justify-content: space-between; padding: 19px; border: 1px solid var(--line); background: var(--white); }
.metric-card span { color: #66716c; font: 9px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.metric-card strong { font-size: 38px; line-height: 1; letter-spacing: -.05em; }
.metric-card small { color: #89918d; font: 9px/1.35 var(--mono); }
.metric-card.hot { border-top: 4px solid var(--coral); }
.metric-card.cool { border-top: 4px solid var(--cyan); }
.metric-card.neutral { border-top: 4px solid var(--ink); }
.metric-card.grid-metric { border-top: 4px solid var(--gold); }

.interpretation { display: grid; grid-template-columns: 42px 1fr; gap: 26px; align-items: start; max-width: 910px; margin-top: 42px; }
.interpret-number { display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid var(--ink); border-radius: 50%; font: 700 12px/1 var(--mono); }
.interpretation p { margin: 3px 0 0; color: #4c5853; font-size: 16px; line-height: 1.75; }
.interpretation code { padding: 2px 5px; background: var(--paper-deep); font: 12px/1 var(--mono); }

.section-dark { color: var(--paper); background: var(--night); }
.inverse .eyebrow { color: var(--acid); }
.inverse > p { color: #9faaa5; }
.dark-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(260px, .6fr); gap: 18px; }
.dark-card { background: var(--night-2); border-color: #2a3d38; box-shadow: none; }
.dark-card .grid-line { stroke: #283c37; }
.dark-card .axis-line { stroke: #3b4e49; }
.dark-card .axis-label { fill: #81938b; }
.dark-card .chart-note { color: #71827b; }
.dark-card .series-point { stroke: var(--night-2); }
.segmented { display: flex; border: 1px solid #3a4c47; border-radius: 4px; padding: 3px; }
.segmented button { padding: 8px 10px; color: #81918a; background: transparent; border: 0; cursor: pointer; font: 9px/1 var(--mono); text-transform: uppercase; }
.segmented button.active { color: var(--night); background: var(--acid); }

.heredity-summary { padding: 30px; border: 1px solid #2a3d38; background: #101f1d; }
.summary-label { margin: 0 0 32px; color: #71827b; font: 800 9px/1 var(--mono); letter-spacing: .14em; }
.big-comparison { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: end; padding-bottom: 26px; border-bottom: 1px solid #2d403b; }
.big-comparison div { display: flex; flex-direction: column; gap: 7px; }
.big-comparison span { color: #7f9089; font: 10px/1 var(--mono); }
.big-comparison strong { font-size: clamp(35px, 4vw, 54px); line-height: 1; letter-spacing: -.06em; }
.big-comparison div:first-child strong { color: var(--acid); }
.versus { padding-bottom: 7px; }
.boundary-diagram { margin-top: 28px; }
.boundary-labels { display: flex; justify-content: space-between; color: #82928c; font: 9px/1 var(--mono); }
.boundary-bar { display: flex; height: 26px; margin: 9px 0; overflow: hidden; border-radius: 2px; }
.boundary-bar i, .boundary-bar b { width: 50%; }
.boundary-bar i { background: repeating-linear-gradient(90deg, var(--coral) 0 7px, #d85d40 7px 9px); }
.boundary-bar b { background: repeating-linear-gradient(90deg, var(--cyan) 0 7px, #3d9ba4 7px 9px); }
.boundary-diagram small { color: #71827b; font: 9px/1 var(--mono); }
.summary-copy { margin: 28px 0 0; color: #a2ada8; font-size: 13px; line-height: 1.75; }

.provenance-card { overflow: hidden; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); }
.provenance-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 25px 30px; border-bottom: 1px solid var(--line); }
.toolbar-label { display: block; margin-bottom: 7px; color: #87918c; font: 800 9px/1 var(--mono); letter-spacing: .12em; }
.provenance-toolbar strong { font: 700 13px/1 var(--mono); }
.epoch-control { width: min(350px, 48%); color: #6f7974; font: 10px/1 var(--mono); }
.epoch-control span { display: flex; justify-content: space-between; margin-bottom: 8px; }
.epoch-control input { width: 100%; accent-color: var(--coral); }

.genome-map { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; padding: 36px 30px; background: #edeee5; }
.module-block { min-width: 0; }
.module-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.module-head strong { font: 800 11px/1 var(--mono); letter-spacing: .1em; }
.module-head span { color: #7c8681; font: 9px/1 var(--mono); }
.byte-grid { display: grid; grid-template-columns: repeat(8, minmax(26px, 1fr)); gap: 4px; }
.byte-cell { position: relative; aspect-ratio: 1; display: grid; place-items: center; min-width: 0; color: #10201d; border: 2px solid transparent; border-radius: 3px; font: 8px/1 var(--mono); transition: transform .15s ease; }
.byte-cell:hover { z-index: 2; transform: scale(1.16); box-shadow: 0 6px 18px rgba(16,28,24,.18); }
.byte-cell.kind-0 { background: var(--coral); }
.byte-cell.kind-1 { background: var(--cyan); }
.byte-cell.kind-2 { color: var(--white); background: var(--unknown); }
.byte-cell.kind-3 { color: var(--white); background: var(--violet); }
.byte-cell.written { border-color: var(--ink); }
.byte-cell .offset { position: absolute; left: 2px; top: 2px; color: rgba(10,25,20,.55); font-size: 6px; }

.provenance-footer { display: flex; justify-content: space-between; gap: 30px; align-items: center; padding: 20px 30px; border-top: 1px solid var(--line); }
.source-legend { display: flex; flex-wrap: wrap; gap: 14px; color: #626e68; font: 9px/1 var(--mono); }
.source-legend span { display: inline-flex; gap: 6px; align-items: center; }
.source { width: 10px; height: 10px; display: inline-block; border-radius: 2px; }
.source.p1 { background: var(--coral); }
.source.p2 { background: var(--cyan); }
.source.rewritten { background: var(--violet); }
.source.unknown { background: var(--unknown); }
.write-outline { width: 10px; height: 10px; display: inline-block; border: 2px solid var(--ink); border-radius: 2px; }
.provenance-footer p { margin: 0; text-align: right; color: #606b66; font: 10px/1.5 var(--mono); }

.ladder-section { background: var(--paper-deep); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.ladder-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; align-items: center; }
.ladder-grid h2 { margin: 0; font-size: clamp(38px, 4vw, 60px); line-height: 1.05; letter-spacing: -.045em; }
.ladder-copy { margin: 25px 0 0; color: #59645f; line-height: 1.8; }
.semantic-stack { border-top: 1px solid #bec4b8; }
.semantic-stack div { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; padding: 16px 12px; border-bottom: 1px solid #bec4b8; }
.semantic-stack code { font: 700 12px/1 var(--mono); }
.semantic-stack span { color: #66716c; font: 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.semantic-stack .world-row { color: var(--paper); background: var(--ink); border: 0; }
.semantic-stack .world-row span { color: var(--acid); }

.claims-heading { grid-template-columns: 1fr; }
.claim-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.claim-card { padding: 32px; border: 1px solid var(--line); background: var(--white); }
.claim-state { display: inline-block; padding: 6px 8px; font: 800 9px/1 var(--mono); letter-spacing: .1em; }
.claim-card.supported .claim-state { background: var(--acid); }
.claim-card.pending .claim-state { color: var(--white); background: var(--ink); }
.claim-card h3 { margin: 25px 0 19px; font-size: 25px; letter-spacing: -.03em; }
.claim-card ul { margin: 0; padding: 0; list-style: none; }
.claim-card li { padding: 12px 0 12px 25px; border-top: 1px solid #e0e2da; color: #52605a; font-size: 14px; line-height: 1.55; position: relative; }
.claim-card li::before { content: ""; position: absolute; left: 2px; top: 19px; width: 7px; height: 7px; border-radius: 50%; background: var(--acid); }
.claim-card.pending li::before { background: var(--coral); }
.next-test { display: grid; grid-template-columns: 190px 1fr; gap: 30px; align-items: center; margin-top: 18px; padding: 25px 30px; color: var(--paper); background: var(--coral); }
.next-test span { color: #792513; font: 800 9px/1 var(--mono); letter-spacing: .13em; }
.next-test p { margin: 0; font-size: 16px; line-height: 1.6; }

footer { padding: 56px 0; color: #94a19b; background: var(--night); }
.footer-inner { display: grid; grid-template-columns: 1fr 1fr auto; gap: 50px; align-items: end; }
.footer-inner p { margin: 0; font: 10px/1.7 var(--mono); }
.footer-inner strong { color: var(--paper); }
.footer-inner a { color: var(--acid); font: 700 10px/1 var(--mono); text-decoration: none; }

.data-error { position: fixed; z-index: 50; left: 20px; right: 20px; bottom: 20px; padding: 15px 18px; color: white; background: #a93424; border-radius: 4px; font: 12px/1.5 var(--mono); box-shadow: var(--shadow); }

@media (max-width: 920px) {
  .site-header { grid-template-columns: 1fr auto; padding: 0 22px; }
  nav { display: none; }
  .hero { grid-template-columns: 1fr; gap: 55px; }
  .hero-model { min-height: 450px; border-radius: 160px 160px 18px 18px; }
  .hero-meta { position: static; grid-column: 1 / -1; flex-wrap: wrap; }
  .section-heading { grid-template-columns: 1fr; gap: 24px; }
  .evidence-grid { grid-template-columns: 1fr; }
  .metric-stack { grid-template-columns: repeat(3, 1fr); }
  .dark-grid { grid-template-columns: 1fr; }
  .ladder-grid { grid-template-columns: 1fr; gap: 50px; }
}

@media (max-width: 650px) {
  .shell { width: min(100% - 28px, 1180px); }
  .site-header { height: 58px; }
  .run-state { font-size: 8px; }
  .hero { min-height: auto; padding: 62px 0 82px; }
  .hero h1 { font-size: 53px; }
  .lede { font-size: 16px; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-model { min-height: 410px; padding: 36px 20px; border-radius: 120px 120px 15px 15px; }
  .model-stage { grid-template-columns: 30px 1fr auto; padding: 15px 12px; }
  .byte-run, .retained-run { width: 54px; }
  .hero-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
  .section { padding: 82px 0; }
  .section-heading { margin-bottom: 36px; }
  .section-heading h2 { font-size: 39px; }
  .chart-card { padding: 20px 14px; }
  .card-head { flex-direction: column; gap: 14px; }
  .chart { height: 300px; }
  .metric-stack { grid-template-columns: 1fr; }
  .metric-card { min-height: 112px; }
  .card-head.wrap { align-items: stretch; }
  .segmented { width: 100%; }
  .segmented button { flex: 1; }
  .provenance-toolbar { align-items: stretch; flex-direction: column; }
  .epoch-control { width: 100%; }
  .genome-map { grid-template-columns: 1fr; padding: 25px 18px; }
  .provenance-footer { align-items: flex-start; flex-direction: column; }
  .provenance-footer p { text-align: left; }
  .byte-grid { grid-template-columns: repeat(8, minmax(22px, 1fr)); }
  .claim-grid { grid-template-columns: 1fr; }
  .next-test { grid-template-columns: 1fr; gap: 12px; }
  .semantic-stack div { grid-template-columns: 1fr; gap: 7px; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
}

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