:root {
  --ember: #d7663f;
  --ember-deep: #a94228;
  --gold: #e6c978;
  --sun: #ffe786;
  --paper: #f3efe7;
  --paper-deep: #e8e1d5;
  --ink: #282820;
  --muted: #6d675b;
  --night: #11120f;
  --night-soft: #1b1d18;
  --rule: rgba(40, 40, 32, .15);
  --radius: 18px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 "IBM Plex Sans", sans-serif;
  overflow-x: hidden;
}
button, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, textarea:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 3px solid var(--sun);
  outline-offset: 3px;
}
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.topnav {
  position: sticky;
  top: 0;
  z-index: 30;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 4vw;
  border-bottom: 1px solid rgba(255,255,255,.12);
  background: rgba(17,18,15,.94);
  backdrop-filter: blur(18px);
  color: #fff;
}
.brand { min-width: 44px; min-height: 44px; display: flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; font: 600 12px/1 "Oswald"; letter-spacing: .15em; }
.brand em { color: var(--gold); font-style: normal; }
.sigil { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--gold); border-radius: 50%; color: var(--gold); font: 500 11px "IBM Plex Mono"; }
.navlinks { display: flex; gap: 24px; }
.navlinks a { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; color: #c9c6bc; text-decoration: none; font: 500 10px "IBM Plex Mono"; letter-spacing: .14em; text-transform: uppercase; }
.navlinks a:hover { color: var(--sun); }
.local-badge { padding: 7px 10px; background: var(--gold); color: var(--night); font: 500 9px "IBM Plex Mono"; letter-spacing: .1em; }

.hero {
  position: relative;
  isolation: isolate;
  min-height: calc(100vh - 68px);
  display: grid;
  place-items: center;
  padding: 90px 6vw 120px;
  overflow: hidden;
  background:
    radial-gradient(circle at 66% 44%, rgba(215,102,63,.22), transparent 32%),
    radial-gradient(circle at 35% 58%, rgba(230,201,120,.12), transparent 38%),
    var(--night);
  color: #f8f4ec;
}
.hero:after { content: ""; position: absolute; inset: 28px; z-index: -1; border: 1px solid rgba(230,201,120,.18); pointer-events: none; }
.hero-copy { position: relative; z-index: 2; width: min(980px, 88vw); text-align: center; }
.eyebrow, .kicker { margin: 0 0 18px; color: var(--ember); font: 500 11px "IBM Plex Mono"; letter-spacing: .2em; text-transform: uppercase; }
.hero h1 { margin: 0; font: 300 clamp(4.6rem, 10.5vw, 10.5rem)/.84 "Oswald"; letter-spacing: -.035em; }
.hero h1 em { display: inline-block; color: var(--gold); font-family: "Cormorant Garamond"; font-weight: 500; }
.hero-lede { max-width: 670px; margin: 34px auto 26px; color: #c9c4b9; font-size: clamp(1.05rem, 2vw, 1.32rem); font-weight: 300; }
.hero-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; }
.boundary { max-width: 650px; margin: 20px auto 0; color: #8e8c84; font: 400 10px/1.5 "IBM Plex Mono"; letter-spacing: .06em; text-transform: uppercase; }
.hero-geometry { position: absolute; inset: 0; display: grid; place-items: center; opacity: .28; filter: drop-shadow(0 0 32px rgba(230,201,120,.24)); transform: scale(1.35); }
.hero-geometry svg { width: min(760px, 90vw); }
.solid-edge { stroke: currentColor; stroke-width: 1.25; vector-effect: non-scaling-stroke; }
.solid-node { fill: var(--sun); stroke: currentColor; stroke-width: 1; vector-effect: non-scaling-stroke; }
.hero-geometry, .shape-stage, .solid-card svg { color: var(--gold); }
.hero-contract { position: absolute; z-index: 2; bottom: 36px; left: 50%; transform: translateX(-50%); display: flex; border: 1px solid rgba(255,255,255,.12); background: rgba(17,18,15,.68); backdrop-filter: blur(12px); }
.hero-contract div { min-width: 170px; padding: 14px 22px; border-right: 1px solid rgba(255,255,255,.12); text-align: left; }
.hero-contract div:last-child { border-right: 0; }
.hero-contract b, .hero-contract small { display: block; }
.hero-contract b { color: var(--gold); font: 500 11px "IBM Plex Mono"; letter-spacing: .08em; }
.hero-contract small { color: #8f8c83; font-size: 11px; }

.btn { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 12px 20px; border: 1px solid transparent; border-radius: 999px; cursor: pointer; text-decoration: none; font: 500 11px "IBM Plex Mono"; letter-spacing: .08em; text-transform: uppercase; transition: transform .2s ease, background .2s ease, color .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn.primary { background: var(--ember); color: #fff; box-shadow: 0 12px 30px rgba(169,66,40,.22); }
.btn.primary:hover { background: var(--ember-deep); }
.btn.ghost { border-color: rgba(255,255,255,.25); color: #fff; }
.btn.quiet { border-color: var(--rule); background: transparent; color: var(--muted); }
.btn.full { width: 100%; border-radius: 10px; }
.text-button { min-height: 44px; padding: 8px 4px; border: 0; background: none; color: var(--ember-deep); cursor: pointer; font: 500 11px "IBM Plex Mono"; text-transform: uppercase; }

.section { padding: 110px 6vw; }
.paper { background: var(--paper); }
.dark { background: var(--night); color: #f5f1e9; }
.section-head { width: min(900px, 100%); margin-bottom: 56px; }
.section-head.compact { margin-inline: auto; text-align: center; }
.section-head h2 { margin: 0 0 18px; font: 300 clamp(2.8rem, 6vw, 6rem)/.95 "Oswald"; letter-spacing: -.025em; }
.section-head h2 em { color: var(--ember); font-family: "Cormorant Garamond"; font-weight: 500; }
.dark .section-head h2 em { color: var(--gold); }
.section-head > p:last-child { max-width: 720px; margin: 0; color: var(--muted); font-size: 1.08rem; }
.section-head.compact > p:last-child { margin-inline: auto; }
.dark .section-head > p:last-child { color: #9f9c92; }

.journey { width: min(1060px, 100%); margin: 0 auto; display: grid; gap: 22px; }
.journey-step { position: relative; padding: 30px; border: 1px solid var(--rule); border-radius: var(--radius); background: rgba(255,255,255,.5); box-shadow: 0 18px 50px rgba(45,40,30,.05); scroll-margin-top: 90px; }
.journey-step.active { background: #fff; border-color: rgba(215,102,63,.32); }
.journey-step.locked { background: rgba(232,225,213,.45); color: #918b80; box-shadow: none; }
.journey-step header { display: flex; align-items: center; gap: 18px; margin-bottom: 22px; }
.step-number { flex: 0 0 48px; width: 48px; height: 48px; display: grid; place-items: center; border: 1px solid currentColor; border-radius: 50%; color: var(--ember); font: 500 12px "IBM Plex Mono"; }
.step-label { margin: 0 0 3px; color: var(--ember-deep); font: 500 10px "IBM Plex Mono"; letter-spacing: .12em; }
.journey-step h3 { margin: 0; font: 500 clamp(1.5rem, 3vw, 2.3rem)/1.05 "Cormorant Garamond"; }
textarea { width: 100%; resize: vertical; padding: 18px; border: 1px solid var(--rule); border-radius: 12px; background: var(--paper); color: var(--ink); font-size: 1.05rem; line-height: 1.6; }
textarea[aria-invalid="true"] { border-color: #9f2f25; box-shadow: 0 0 0 3px rgba(159,47,37,.12); }
.input-actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 12px 0; }
.privacy-note { margin: 12px 0 0; color: #777267; text-align: center; font: 400 10px/1.5 "IBM Plex Mono"; letter-spacing: .06em; }
.locked-message { padding: 26px; border: 1px dashed var(--rule); border-radius: 12px; text-align: center; font: 400 11px "IBM Plex Mono"; text-transform: uppercase; letter-spacing: .08em; }

.shape-stage { position: relative; min-height: 430px; display: grid; place-items: center; overflow: hidden; border-radius: 14px; background: var(--night); color: var(--gold); }
.shape-stage svg { width: min(520px, 86%); filter: drop-shadow(0 0 18px rgba(255,231,134,.25)); animation: breathe 5s ease-in-out infinite; }
.shape-orbit { position: absolute; border: 1px solid rgba(230,201,120,.2); border-radius: 50%; }
.orbit-a { width: 68%; aspect-ratio: 1; transform: rotate(24deg) scaleY(.36); }
.orbit-b { width: 50%; aspect-ratio: 1; transform: rotate(-34deg) scaleY(.42); }
.shape-name { position: absolute; left: 22px; bottom: 20px; display: grid; }
.shape-name span, .aha-card span, .truth-grid span, .prediction-line small, .fork-path span, .kill-gate span { color: var(--gold); font: 500 10px "IBM Plex Mono"; letter-spacing: .11em; }
.shape-name strong { font: 500 2.4rem "Cormorant Garamond"; color: #fff; }
.shape-name small { color: #949188; font: 400 10px "IBM Plex Mono"; text-transform: uppercase; }
@keyframes breathe { 0%,100% { transform: scale(.98) rotate(-1deg); } 50% { transform: scale(1.03) rotate(1deg); } }

.aha-card { margin: 16px 0; padding: 22px; border-left: 3px solid var(--ember); background: var(--sun); }
.aha-card span { color: var(--ember-deep); }
.aha-card p { margin: 7px 0 0; font: 500 clamp(1.3rem, 3vw, 2rem)/1.2 "Cormorant Garamond"; }
.truth-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.truth-grid > div { padding: 20px; border: 1px solid var(--rule); border-radius: 12px; }
.truth-grid span { color: var(--ember-deep); }
.truth-grid strong { display: block; margin: 8px 0 4px; font-size: 1.05rem; }
.truth-grid p { margin: 0; color: var(--muted); font-size: .88rem; }
.metric-list { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 24px; margin: 24px 0; }
.metric > div { display: flex; justify-content: space-between; font: 500 10px "IBM Plex Mono"; text-transform: uppercase; }
.metric i { display: block; height: 5px; margin-top: 8px; background: var(--paper-deep); overflow: hidden; }
.metric i span { display: block; height: 100%; background: var(--ember); }
.evidence-drawer { margin: 20px 0; border: 1px solid var(--rule); border-radius: 12px; overflow: hidden; }
.evidence-drawer summary { min-height: 48px; display: flex; align-items: center; padding: 12px 16px; cursor: pointer; font: 500 10px "IBM Plex Mono"; text-transform: uppercase; letter-spacing: .08em; }
.evidence-drawer ol { margin: 0; padding: 0 18px 18px 44px; }
.evidence-drawer li { padding: 12px 0; border-top: 1px solid var(--rule); }
.evidence-drawer li span, .evidence-drawer li b { display: block; }
.evidence-drawer li span { color: var(--muted); font-size: .86rem; }
.evidence-drawer li b { font: 500 10px/1.6 "IBM Plex Mono"; text-transform: uppercase; }
.correction { margin: 20px 0; padding: 16px; border-radius: 12px; background: var(--paper); }
.correction p { margin: 0 0 10px; font-weight: 500; }
.correction button { min-width: 72px; min-height: 44px; margin-right: 6px; border: 1px solid var(--rule); border-radius: 999px; background: #fff; cursor: pointer; }
.correction button:hover { border-color: var(--ember); color: var(--ember-deep); }
.correction span { display: block; min-height: 20px; margin-top: 8px; color: var(--muted); font-size: .84rem; }

.prediction-line { display: flex; align-items: center; gap: 16px; padding: 20px; border-radius: 12px; background: var(--night); color: #fff; }
.pulse { width: 16px; height: 16px; flex: 0 0 16px; border-radius: 50%; background: var(--ember); box-shadow: 0 0 0 0 rgba(215,102,63,.7); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 15px rgba(215,102,63,0); } 100% { box-shadow: 0 0 0 0 rgba(215,102,63,0); } }
.prediction-line strong { display: block; margin: 4px 0; font: 500 1.35rem "Cormorant Garamond"; }
.prediction-line p { margin: 0; color: #aaa79f; font-size: .83rem; }
.fork { position: relative; display: grid; grid-template-columns: .65fr 1fr 1fr; gap: 12px; margin: 20px 0; }
.fork-origin, .fork-path { min-height: 132px; display: flex; flex-direction: column; justify-content: center; padding: 18px; border-radius: 12px; }
.fork-origin { background: var(--paper-deep); text-align: center; font: 500 10px "IBM Plex Mono"; }
.fork-path { border: 1px solid var(--rule); }
.fork-path.observed { opacity: .72; }
.fork-path.chosen { border-color: var(--ember); background: #fff8ed; }
.fork-path span { color: var(--ember-deep); }
.fork-path b { margin: 8px 0; font: 500 1.25rem "Cormorant Garamond"; }
.fork-path small { color: var(--muted); }
.test-prompt { padding: 22px; border-radius: 12px; background: var(--paper-deep); }
.test-prompt > p:first-child { margin-top: 0; font: 500 1.2rem "Cormorant Garamond"; }
.test-prompt label { display: block; margin-bottom: 5px; color: var(--muted); font-size: .8rem; }
.test-prompt select { width: 100%; min-height: 48px; margin-bottom: 12px; padding: 10px; border: 1px solid var(--rule); border-radius: 8px; background: #fff; }
.status { min-height: 20px; margin: 10px 0 0; text-align: center; color: var(--ember-deep); font: 500 10px/1.55 "IBM Plex Mono"; }

.model-section { background: radial-gradient(circle at 50% 50%, #24251e 0, var(--night) 60%); }
.solid-gallery { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; }
.solid-card { position: relative; overflow: hidden; min-width: 0; border: 1px solid rgba(255,255,255,.1); background: rgba(255,255,255,.025); }
.solid-card.selected { border-color: var(--gold); background: rgba(230,201,120,.07); }
.solid-card svg { display: block; width: 100%; border-bottom: 1px solid rgba(255,255,255,.08); }
.solid-card > div { padding: 16px; }
.solid-card span { color: var(--ember); font: 500 9px "IBM Plex Mono"; letter-spacing: .1em; }
.solid-card h3 { margin: 4px 0; font: 500 1.4rem "Cormorant Garamond"; }
.solid-card p { margin: 0; color: #8f8d84; font: 400 9px "IBM Plex Mono"; text-transform: uppercase; }
.legend-row { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 28px; color: #939088; font: 400 9px "IBM Plex Mono"; letter-spacing: .06em; }
.dot { width: 7px; height: 7px; display: inline-block; margin-right: 7px; border-radius: 50%; }
.dot.fact { background: #fff; } .dot.hypothesis { background: var(--gold); } .dot.untested { background: var(--ember); }

.research-section { background: var(--paper-deep); }
.research-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.research-grid article { padding: 28px; border: 1px solid var(--rule); background: var(--paper); }
.research-grid b { color: var(--ember); font: 500 11px "IBM Plex Mono"; }
.research-grid h3 { margin: 20px 0 10px; font: 500 1.8rem "Cormorant Garamond"; }
.research-grid p { margin: 0; color: var(--muted); }
.kill-gate { display: grid; grid-template-columns: 180px 1fr; gap: 24px; align-items: center; margin-top: 16px; padding: 24px; background: var(--night); color: #fff; }
.kill-gate p { margin: 0; color: #b6b2aa; }

footer { display: flex; justify-content: space-between; gap: 20px; padding: 26px 5vw; background: #090a08; color: #76766e; font: 400 9px "IBM Plex Mono"; letter-spacing: .08em; }

@media (max-width: 900px) {
  .navlinks { display: none; }
  .solid-gallery { grid-template-columns: repeat(2, 1fr); }
  .solid-card.selected { grid-column: span 2; }
  .hero-contract div { min-width: 135px; }
  .research-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .topnav { min-height: 60px; padding: 10px 15px; }
  .brand > span:last-child { display: none; }
  .local-badge { font-size: 8px; }
  .hero { min-height: calc(100svh - 60px); padding: 76px 20px 150px; }
  .hero:after { inset: 12px; }
  .hero-copy { width: 100%; }
  .hero h1 { font-size: clamp(3.5rem, 18vw, 5.3rem); }
  .hero-lede { font-size: 1rem; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-contract { bottom: 24px; width: calc(100% - 40px); }
  .hero-contract div { min-width: 0; flex: 1; padding: 10px 8px; }
  .hero-contract b { font-size: 8px; }
  .hero-contract small { font-size: 8px; }
  .section { padding: 78px 18px; }
  .section-head { margin-bottom: 36px; }
  .journey-step { padding: 18px; border-radius: 14px; }
  .journey-step header { align-items: flex-start; gap: 12px; }
  .step-number { width: 40px; height: 40px; flex-basis: 40px; }
  .shape-stage { min-height: 350px; }
  .truth-grid, .metric-list { grid-template-columns: 1fr; }
  .fork { grid-template-columns: 1fr; }
  .fork-origin { min-height: 58px; }
  .fork-path { min-height: 110px; }
  .solid-gallery { grid-template-columns: 1fr 1fr; }
  .solid-card > div { padding: 12px; }
  .kill-gate { grid-template-columns: 1fr; gap: 8px; }
  footer { flex-direction: column; }
}

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