:root {
  color-scheme: dark;
  --ink: #f4f5f0;
  --muted: #a6ada7;
  --muted-2: #747c77;
  --canvas: #090c0b;
  --panel: #111513;
  --panel-2: #151a17;
  --line: #2a312d;
  --line-soft: #202622;
  --green: #b9ff4d;
  --green-dark: #182312;
  --red: #ff785f;
  --red-dark: #2c1713;
  --amber: #ffc55c;
  --max: 1220px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--canvas);
  color: var(--ink);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--canvas); }
button, a { font: inherit; }
a { color: inherit; }

.site-header {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  min-height: 82px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand { display: inline-flex; align-items: center; gap: 12px; width: max-content; text-decoration: none; letter-spacing: .08em; font-size: 13px; font-weight: 650; }
.brand b { color: var(--green); }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid #42503f; background: var(--green); color: #0b0f0b; font-weight: 900; border-radius: 4px; }
.quiet-link { justify-self: end; color: var(--muted); text-decoration: none; font-size: 13px; }
.quiet-link:hover { color: var(--ink); }
.runtime-state { display: inline-flex; align-items: center; gap: 9px; color: var(--muted); font-size: 12px; letter-spacing: .04em; }
.runtime-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 5px rgba(255,197,92,.08); }
.runtime-state.ready .runtime-dot, .demo-online.ready .runtime-dot { background: var(--green); box-shadow: 0 0 0 5px rgba(185,255,77,.08); animation: runtime-pulse 1.8s ease-out infinite; }
@keyframes runtime-pulse {
  0%, 45% { box-shadow: 0 0 0 5px rgba(185,255,77,.08), 0 0 14px rgba(185,255,77,.5); }
  75%, 100% { box-shadow: 0 0 0 11px rgba(185,255,77,0), 0 0 18px rgba(185,255,77,.25); }
}
.demo-online { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 19px; color: var(--amber); font-size: 10px; font-weight: 820; letter-spacing: .13em; }
.demo-online.ready { color: var(--green); }
.demo-online.unavailable { color: var(--red); }
.demo-online .runtime-dot { flex: 0 0 auto; }
.runtime-state.unavailable .runtime-dot { background: var(--red); box-shadow: 0 0 0 5px rgba(255,120,95,.08); }
.demo-online.unavailable .runtime-dot { background: var(--red); box-shadow: 0 0 0 5px rgba(255,120,95,.08); }

main { overflow: hidden; }
.hero { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; padding: 110px 0 76px; position: relative; }
.hero::after { content: ""; position: absolute; width: 520px; height: 520px; border-radius: 50%; right: -250px; top: -190px; background: radial-gradient(circle, rgba(185,255,77,.09), rgba(185,255,77,0) 68%); pointer-events: none; }
.eyebrow, .section-number { color: var(--green); font-size: 11px; letter-spacing: .17em; font-weight: 750; }
h1 { max-width: 950px; margin: 24px 0 26px; font-size: clamp(54px, 7.7vw, 106px); line-height: .91; letter-spacing: -.065em; font-weight: 680; }
h1 span { color: #858d87; }
.hero-copy { max-width: 700px; margin: 0; color: #bac0bb; font-size: clamp(17px, 2vw, 22px); line-height: 1.55; }
.proof-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.proof-row span { padding: 9px 13px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 12px; }
.proof-row span::before { content: "✓"; margin-right: 7px; color: var(--green); }
.demo-start-link { display: inline-flex; align-items: center; gap: 24px; min-height: 52px; margin-top: 24px; padding: 0 19px 0 21px; border: 1px solid var(--green); border-radius: 6px; background: var(--green); color: #0b100a; text-decoration: none; font-size: 13px; font-weight: 780; letter-spacing: .01em; box-shadow: 0 0 0 0 rgba(185,255,77,0); transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
.demo-start-link:hover { transform: translateY(-1px); background: #ccff79; box-shadow: 0 10px 30px rgba(185,255,77,.12); }
.demo-start-link:focus-visible { outline: 3px solid rgba(185,255,77,.34); outline-offset: 3px; }
.demo-start-arrow { font-size: 21px; line-height: 1; animation: demo-cue-down 1.05s ease-in-out infinite; }

@keyframes demo-cue-down {
  0%, 100% { transform: translateY(-2px); }
  50% { transform: translateY(3px); }
}

.architecture { width: min(var(--max), calc(100% - 48px)); margin: 0 auto 110px; display: grid; grid-template-columns: 1fr 150px 1fr 150px 1fr; align-items: stretch; }
.architecture-node { min-height: 132px; display: flex; flex-direction: column; justify-content: center; padding: 22px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; }
.architecture-node small { color: var(--muted-2); font-size: 10px; letter-spacing: .16em; }
.architecture-node strong { margin: 10px 0 4px; font-size: 19px; }
.architecture-node span { color: var(--muted); font-size: 13px; }
.architecture-node.active-node { border-color: #46583b; background: linear-gradient(145deg, #182016, #111513 68%); }
.active-node strong { color: var(--green); }
.architecture-line { display: grid; place-items: center; position: relative; color: var(--muted-2); font-size: 10px; letter-spacing: .11em; text-transform: uppercase; }
.architecture-line::before { content: ""; position: absolute; left: 14px; right: 14px; height: 1px; background: var(--line); }
.architecture-line::after { content: ""; position: absolute; right: 13px; width: 6px; height: 6px; border-top: 1px solid #657067; border-right: 1px solid #657067; transform: rotate(45deg); }
.architecture-line span { position: relative; z-index: 1; padding: 5px 8px; background: var(--canvas); }

.demo-shell { scroll-margin-top: 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #0c100e; padding: 100px max(24px, calc((100vw - var(--max)) / 2)); }
.story-intro { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .65fr); gap: 70px; align-items: end; margin-bottom: 54px; }
.story-intro h2 { margin: 18px 0 0; font-size: clamp(38px, 5vw, 66px); line-height: 1.02; letter-spacing: -.045em; }
.story-intro p { margin: 0; color: var(--muted); line-height: 1.65; font-size: 15px; }

.source-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 18px; }
.source-card { padding: 25px; border: 1px solid var(--line); background: var(--panel); border-radius: 9px; transition: border-color .25s ease, background .25s ease; }
.source-card.read { border-color: #415435; background: #121811; }
.source-head { display: flex; align-items: start; justify-content: space-between; gap: 18px; padding-bottom: 21px; border-bottom: 1px solid var(--line-soft); }
.source-head small { color: var(--muted-2); letter-spacing: .14em; font-size: 9px; }
.source-head h3 { margin: 5px 0 0; font-size: 18px; }
.source-status { color: var(--amber); font: 700 9px/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .09em; }
.source-card.read .source-status { color: var(--green); }
.field-list { display: grid; gap: 8px; margin-top: 17px; }
.field { min-height: 39px; display: grid; grid-template-columns: minmax(150px, .8fr) 1.2fr; align-items: center; gap: 14px; padding: 8px 11px; border-radius: 5px; background: #0d110f; border: 1px solid transparent; }
.field code { color: #dfe3df; font-size: 12px; }
.field span { color: var(--muted-2); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.field.allowed { border-color: rgba(185,255,77,.22); background: rgba(185,255,77,.045); }
.field.allowed span { color: var(--green); }
.field.denied code { color: #6f7771; text-decoration: line-through; }
.field.denied span { color: var(--red); }

.story-grid { display: grid; grid-template-columns: minmax(300px, .78fr) minmax(480px, 1.22fr); gap: 18px; align-items: stretch; }
.scenario-list { border: 1px solid var(--line); background: var(--panel); border-radius: 9px; overflow: hidden; }
.scenario-button { appearance: none; position: relative; width: 100%; min-height: 94px; display: grid; grid-template-columns: 34px 1fr auto; gap: 14px; align-items: center; padding: 17px 19px; border: 0; border-bottom: 1px solid var(--line-soft); background: transparent; color: var(--ink); text-align: left; cursor: pointer; transition: background .2s ease, box-shadow .2s ease; }
.scenario-button:not(:disabled):hover { background: #171d19; }
.scenario-button.current { background: linear-gradient(90deg, rgba(185,255,77,.10), #171d19 62%); box-shadow: inset 3px 0 0 var(--green); }
.scenario-button:disabled { cursor: not-allowed; opacity: .38; }
.scenario-index { width: 29px; height: 29px; display: grid; place-items: center; border: 1px solid #3a433d; border-radius: 50%; color: var(--muted); font-size: 11px; }
.scenario-button.current .scenario-index, .scenario-button.complete .scenario-index { color: #0c110b; background: var(--green); border-color: var(--green); }
.scenario-button b { display: block; font-size: 14px; font-weight: 640; }
.scenario-button small { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; }
.scenario-action { min-width: 100px; display: inline-flex; align-items: center; justify-content: flex-end; gap: 8px; color: var(--green); opacity: 0; transform: translateX(-7px); transition: opacity .2s ease, transform .2s ease; }
.scenario-action small { display: block; margin: 0; color: inherit; font-size: 9px; font-weight: 820; letter-spacing: .11em; white-space: nowrap; }
.scenario-arrow { color: var(--green); font-size: 22px; line-height: 1; }
.scenario-button.current .scenario-action { opacity: 1; transform: translateX(0); }
.scenario-button.current .scenario-arrow { animation: demo-cue-right 1.05s ease-in-out infinite; }

@keyframes demo-cue-right {
  0%, 100% { transform: translateX(-2px); }
  50% { transform: translateX(4px); }
}

.reset-button { appearance: none; margin: 16px 18px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 5px; background: transparent; color: var(--muted); cursor: pointer; font-size: 11px; }
.reset-button:hover { color: var(--ink); border-color: #465048; }
.next-scenario-button { display: none; width: 100%; min-height: 52px; margin-top: 16px; border: 1px solid var(--green); border-radius: 5px; background: var(--green); color: #0b100a; font-weight: 820; cursor: pointer; }
.next-scenario-button[hidden] { display: none !important; }

.decision-card { min-height: 390px; padding: 27px; border: 1px solid var(--line); background: var(--panel-2); border-radius: 9px; position: relative; overflow: hidden; }
.decision-card::after { content: ""; position: absolute; width: 280px; height: 280px; right: -120px; top: -150px; border-radius: 50%; background: radial-gradient(circle, rgba(185,255,77,.055), transparent 68%); pointer-events: none; }
.decision-card.loading { opacity: .72; }
.decision-topline { display: flex; justify-content: space-between; gap: 18px; align-items: center; color: var(--muted-2); font-size: 9px; letter-spacing: .13em; }
.decision-pill { padding: 6px 9px; border-radius: 999px; font-weight: 800; letter-spacing: .11em; }
.decision-pill.neutral { color: var(--muted); background: #252c28; }
.decision-pill.allow { color: var(--green); background: var(--green-dark); }
.decision-pill.block { color: var(--red); background: var(--red-dark); }
.decision-card > h3 { margin: 26px 0 9px; max-width: 640px; font-size: clamp(25px, 3vw, 37px); letter-spacing: -.035em; }
.decision-card > p { max-width: 680px; margin: 0; color: var(--muted); line-height: 1.55; font-size: 14px; }
.decision-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 25px 0; background: var(--line); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.decision-metrics > div { padding: 15px; background: #0f1311; }
.decision-metrics small { display: block; color: var(--muted-2); font-size: 8px; letter-spacing: .12em; }
.decision-metrics strong { display: block; margin-top: 7px; font: 700 16px/1 ui-monospace, SFMono-Regular, Menlo, monospace; }

.evidence-panel { padding: 19px; border: 1px solid var(--line-soft); border-radius: 6px; background: #0e1210; }
.evidence-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.evidence-heading span { font-size: 12px; font-weight: 700; }
.evidence-heading small { color: var(--green); font: 700 9px/1 ui-monospace, SFMono-Regular, Menlo, monospace; text-transform: uppercase; letter-spacing: .11em; }
.evidence-panel dl { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; margin: 0; }
.evidence-panel dl div { min-width: 0; display: grid; grid-template-columns: 76px 1fr; gap: 8px; }
.evidence-panel dt { color: var(--muted-2); font-size: 10px; }
.evidence-panel dd { margin: 0; overflow: hidden; color: #c4cac5; font: 10px/1.35 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: nowrap; text-overflow: ellipsis; }
.evidence-panel > p { margin: 15px 0 0; color: #69716b; font-size: 10px; }

.closing { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; padding: 108px 0; }
.closing blockquote { margin: 23px 0 38px; font-size: clamp(34px, 5vw, 66px); line-height: 1.05; letter-spacing: -.045em; font-weight: 620; }
.closing blockquote span { color: #858d87; }
.closing-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.primary-link, .secondary-link { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 19px; border-radius: 5px; text-decoration: none; font-size: 13px; font-weight: 680; }
.primary-link { gap: 28px; background: var(--green); color: #0d120c; }
.primary-link:hover { background: #ccff79; }
.secondary-link { border: 1px solid var(--line); color: #d6dad6; }
.secondary-link:hover { border-color: #4a554e; }

footer { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-top: 1px solid var(--line); color: var(--muted-2); font-size: 10px; letter-spacing: .09em; }

@media (max-width: 950px) {
  .architecture { grid-template-columns: 1fr; gap: 8px; }
  .architecture-line { min-height: 38px; }
  .architecture-line::before { top: 4px; bottom: 4px; left: 50%; right: auto; width: 1px; height: auto; }
  .architecture-line::after { right: auto; bottom: 3px; transform: rotate(135deg); }
  .story-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .site-header { width: min(100% - 24px, var(--max)); grid-template-columns: 1fr auto; min-height: 64px; }
  .runtime-state { display: none; }
  .hero, .closing, footer { width: min(100% - 24px, var(--max)); }
  .hero { padding: 42px 0 34px; }
  .demo-online { margin-bottom: 14px; font-size: 9px; }
  h1 { margin: 17px 0 20px; font-size: clamp(42px, 12.5vw, 58px); }
  .hero-copy { font-size: 16px; }
  .proof-row { margin-top: 22px; gap: 7px; }
  .proof-row span { padding: 7px 10px; font-size: 10px; }
  .architecture { display: none; }
  .demo-shell { display: flex; flex-direction: column; padding: 38px 12px; }
  .story-intro { order: 1; grid-template-columns: 1fr; gap: 15px; margin-bottom: 25px; }
  .story-intro h2 { font-size: clamp(34px, 10vw, 46px); }
  .story-intro p { font-size: 13px; }
  .story-grid { order: 2; }
  .source-grid { order: 3; grid-template-columns: 1fr; margin: 22px 0 0; }
  .source-card { padding: 18px; }
  .source-head { flex-direction: column; gap: 9px; }
  .field { grid-template-columns: 1fr; gap: 4px; }
  .scenario-button { min-height: 82px; grid-template-columns: 34px 1fr 44px; padding: 14px; }
  .scenario-action { min-width: 44px; min-height: 44px; justify-content: center; }
  .scenario-action small { display: none; }
  .scenario-arrow { font-size: 27px; }
  .reset-button { min-height: 44px; }
  .decision-card { padding: 18px; scroll-margin-top: 72px; }
  .decision-card > h3 { margin-top: 20px; font-size: 27px; }
  .decision-metrics { grid-template-columns: 1fr 1fr 1fr; margin: 20px 0; }
  .decision-metrics > div { padding: 11px 7px; }
  .decision-metrics small { font-size: 7px; }
  .evidence-panel { padding: 15px; }
  .evidence-panel dl { grid-template-columns: 1fr; }
  .evidence-panel dd { white-space: normal; overflow-wrap: anywhere; }
  .next-scenario-button:not([hidden]) { display: block; position: sticky; bottom: 10px; z-index: 3; box-shadow: 0 10px 28px rgba(0,0,0,.38); }
  .closing { padding: 64px 0; }
  footer { flex-direction: column; align-items: flex-start; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}