@import url('https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&display=swap');

:root{--ink:#10110f;--paper:#f3f0e8;--signal:#e9ff55;--flow:#55d6d2;--barrier:#ff6b59;--demand:#7be495;--muted:#9e9e94;--line:rgba(16,17,15,.18)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--ink)}
body{margin:0;font-family:Geist,Arial,sans-serif;background:var(--paper);color:var(--ink);letter-spacing:0;overflow-x:hidden}
button,a{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--flow);outline-offset:3px}
main{width:100%;max-width:100%;overflow-x:hidden}
.lab{min-height:100svh;position:relative;background:var(--ink);color:var(--paper);overflow:hidden;padding:20px clamp(18px,3vw,48px) 0;display:grid;grid-template-columns:minmax(330px,.85fr) minmax(430px,1.15fr);grid-template-rows:auto 1fr auto auto auto;column-gap:clamp(24px,4vw,72px)}
.nav{grid-column:1/-1;display:flex;align-items:center;gap:18px;z-index:10;height:48px;border-bottom:1px solid rgba(243,240,232,.18);color:var(--paper)}
.brand{color:inherit;text-decoration:none;font-weight:700;display:flex;align-items:center;gap:10px}.brand-mark{display:inline-block;width:14px;height:14px;background:var(--signal);border-radius:50% 50% 4px 50%}.model-status{margin-left:auto;font-size:12px;color:var(--muted)}
.icon-button{width:42px;height:42px;border:1px solid rgba(243,240,232,.32);background:transparent;color:var(--paper);display:grid;place-items:center;font-weight:700}.icon-button.light{border-color:rgba(243,240,232,.42)}
.stage-copy{grid-column:1;grid-row:2;z-index:4;align-self:center;padding:clamp(24px,5vh,64px) 0;color:var(--paper)}
.kicker{margin:0 0 15px;font-size:11px;font-weight:700;color:var(--signal);letter-spacing:.12em}.kicker.dark{color:#4c5544}
h1{font-size:clamp(2.8rem,5vw,5.25rem);line-height:.92;letter-spacing:0;max-width:72rem;margin:0 0 20px;font-weight:600;text-wrap:balance;color:var(--paper)}h2{font-size:clamp(2.3rem,5vw,5rem);line-height:.96;letter-spacing:0;margin:0;font-weight:600}.lede{font-size:clamp(16px,1.35vw,20px);line-height:1.45;max-width:620px;color:#c8c8bd;margin:0 0 28px}
.scenario-tabs{display:inline-grid;grid-template-columns:1fr 1fr;border:1px solid rgba(243,240,232,.3);margin-bottom:18px}.scenario{border:0;background:transparent;color:#b8b8ae;padding:11px 16px;min-height:44px}.scenario.active{background:var(--paper);color:var(--ink)}
.prediction{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:14px}.prediction>span{width:100%;font-size:12px;color:var(--muted)}.prediction button{border:1px solid rgba(243,240,232,.28);background:transparent;color:var(--paper);min-height:44px;padding:10px 14px}.prediction button[aria-pressed=true]{background:var(--flow);border-color:var(--flow);color:var(--ink)}
.run-row{display:flex;align-items:center;gap:10px}.run-button{min-height:48px;border:0;background:var(--signal);color:var(--ink);padding:0 18px;display:flex;gap:10px;align-items:center;font-weight:700}.run-button:disabled{opacity:.42;cursor:not-allowed}.keyboard-hint{font-size:11px;color:#85857c}
.viewport{grid-column:2;grid-row:2;position:relative;min-height:520px;align-self:stretch;overflow:hidden;background:radial-gradient(circle at 60% 40%,rgba(85,214,210,.09),transparent 45%);color:var(--paper)}#scene{position:absolute;width:100%;height:100%;inset:0;display:block}.fallback{position:absolute;inset:20px;border:1px solid var(--barrier);padding:20px;background:#241b18;z-index:3}.year-meter{position:absolute;right:2px;top:24px;z-index:2;text-align:right}.year-meter span{font-size:10px;color:var(--muted);display:block}.year-meter strong{font-size:clamp(34px,5vw,78px);font-variant-numeric:tabular-nums;color:var(--paper)}.scene-label{position:absolute;font-size:9px;line-height:1.1;color:#96968d;pointer-events:none}.capability-label{left:7%;bottom:22%}.review-label{left:46%;bottom:16%;color:var(--barrier)}.demand-label{right:7%;bottom:22%;color:var(--demand)}
.telemetry{grid-column:1/-1;grid-row:3;display:grid;grid-template-columns:repeat(5,1fr);grid-auto-flow:dense;border-top:1px solid rgba(243,240,232,.2);border-bottom:1px solid rgba(243,240,232,.2);z-index:5}.telemetry>div{padding:14px 18px;border-right:1px solid rgba(243,240,232,.2);min-width:0}.telemetry>div:last-child{border-right:0}.telemetry span{display:block;color:#8f8f87;font-size:10px;text-transform:uppercase;margin-bottom:6px}.telemetry strong{font-size:clamp(18px,2vw,29px);font-variant-numeric:tabular-nums;white-space:nowrap}
.feedback{grid-column:1/-1;grid-row:4;display:flex;align-items:flex-start;gap:14px;z-index:5;min-height:64px;padding:14px 0}.feedback-symbol{color:var(--signal);font-size:22px}.feedback p{margin:0;max-width:950px;line-height:1.4;color:#c8c8bd}.feedback strong{color:var(--paper)}.source-boundary{grid-column:1/-1;grid-row:5;color:#686860;font-size:10px;padding-bottom:12px;text-align:right}
.graph-band{background:var(--signal);display:grid;grid-template-columns:.8fr 1.2fr;gap:8vw;padding:clamp(90px,14vw,190px) clamp(22px,6vw,90px);align-items:center}.graph-copy p:not(.kicker){font-size:18px;line-height:1.55;max-width:560px}.text-button{background:none;border:0;border-bottom:1px solid var(--ink);padding:8px 0;font-weight:700}.graph-wrap{min-width:0}.graph-wrap svg{width:100%;display:block;overflow:visible}.grid-lines line{stroke:rgba(16,17,15,.15);stroke-width:1}.line{fill:none;stroke-width:5;vector-effect:non-scaling-stroke}.cap-line{stroke:var(--ink)}.price-line{stroke:var(--barrier)}.spend-line{stroke:#2f846f}#cursor{stroke:var(--ink);stroke-width:1;stroke-dasharray:5 6}.legend{display:flex;gap:22px;font-size:12px}.legend span:before{content:"";display:inline-block;width:20px;height:3px;vertical-align:middle;margin-right:7px}.legend .cap:before{background:var(--ink)}.legend .price:before{background:var(--barrier)}.legend .spend:before{background:#2f846f}
.model-walkthrough{background:var(--paper);display:grid;grid-template-columns:.72fr 1.28fr;gap:8vw;padding:clamp(100px,15vw,220px) clamp(22px,6vw,90px)}.sticky-copy{align-self:start;position:sticky;top:80px}.sticky-copy .kicker{color:#4c5544}.scrub-copy{font-size:clamp(18px,2vw,27px);line-height:1.45;color:#68685f}.cause-stack{display:grid;gap:0}.cause-stack article{min-height:320px;border-top:1px solid var(--line);padding:34px 0;position:relative}.cause-stack article>span{font-variant-numeric:tabular-nums;color:#79806c;font-size:14px}.cause-stack h3{font-size:clamp(28px,4vw,56px);margin:40px 0 15px}.cause-stack p{font-size:18px;line-height:1.6;max-width:620px;color:#5c5c54}
.transfer{background:var(--flow);padding:clamp(90px,13vw,180px) clamp(22px,6vw,90px)}.transfer h2{max-width:1100px}.answer-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-flow:dense;margin-top:54px;border:1px solid var(--ink)}.answer-grid button{background:transparent;border:0;border-right:1px solid var(--ink);padding:28px 20px;min-height:88px;font-weight:700;color:var(--ink)}.answer-grid button:last-child{border-right:0}.answer-grid button:hover,.answer-grid button.selected{background:var(--ink);color:var(--flow)}.answer-feedback{min-height:48px;font-size:18px;line-height:1.5}.answer-feedback.correct{font-weight:700}
footer{background:var(--ink);color:var(--paper);padding:34px clamp(22px,6vw,90px);display:flex;align-items:center;gap:20px;justify-content:space-between}footer>div:first-child{display:flex;align-items:center;gap:10px}footer p{color:#9f9f96}.footer-actions{display:flex;gap:10px}.secondary-button,.export-button{min-height:48px;padding:0 18px}.secondary-button{background:transparent;color:var(--paper);border:1px solid #65655e}.export-button{background:var(--signal);color:var(--ink);border:0;font-weight:700}.export-button:disabled{opacity:.4}
dialog{width:min(680px,calc(100vw - 32px));border:0;padding:clamp(24px,5vw,54px);background:var(--paper);color:var(--ink)}dialog::backdrop{background:rgba(0,0,0,.7)}.dialog-close{position:absolute;right:12px;top:12px;width:42px;height:42px;border:1px solid var(--ink);background:transparent;font-size:24px}dialog h2{font-size:clamp(36px,6vw,66px);margin-bottom:32px}dialog dl{display:grid;grid-template-columns:1fr 1.4fr;margin:0}dialog dt,dialog dd{margin:0;padding:14px 0;border-top:1px solid var(--line)}dialog dd{font-variant-numeric:tabular-nums}.dialog-note{color:#616159;line-height:1.5}
@media(max-width:900px){.lab{grid-template-columns:1fr;grid-template-rows:auto auto minmax(340px,46vh) auto auto auto}.stage-copy{grid-column:1;grid-row:2;padding:24px 0 8px}.viewport{grid-column:1;grid-row:3;min-height:340px}.telemetry{grid-row:4;grid-template-columns:repeat(2,1fr)}.telemetry>div:nth-child(5){grid-column:1/-1}.feedback{grid-row:5}.source-boundary{grid-row:6}.graph-band,.model-walkthrough{grid-template-columns:1fr}.sticky-copy{position:relative;top:auto}.graph-wrap{margin-top:30px}.answer-grid{grid-template-columns:1fr}.answer-grid button{border-right:0;border-bottom:1px solid var(--ink)}.answer-grid button:last-child{border-bottom:0}}
@media(max-width:560px){.lab{padding-left:14px;padding-right:14px}.nav{height:44px}.model-status{font-size:9px}.stage-copy{padding-top:16px}h1{font-size:clamp(2.25rem,11vw,3.5rem);line-height:.94}.lede{font-size:14px;margin-bottom:16px}.scenario-tabs{margin-bottom:10px}.scenario{padding:8px 11px}.prediction{margin-bottom:8px}.prediction button{font-size:12px;min-height:40px}.run-button{min-height:44px}.keyboard-hint{display:none}.viewport{min-height:310px}.telemetry>div{padding:10px}.telemetry strong{font-size:18px}.feedback{font-size:13px}.graph-band,.model-walkthrough,.transfer{padding-left:18px;padding-right:18px}.cause-stack article{min-height:250px}footer{align-items:flex-start;flex-wrap:wrap}.footer-actions{width:100%}.footer-actions button{flex:1}dialog dl{grid-template-columns:1fr}dialog dd{padding-top:0;border-top:0}}
@media(max-height:400px){.lab{min-height:100vh;padding:7px 12px 0;grid-template-columns:minmax(245px,.9fr) minmax(300px,1.1fr);grid-template-rows:38px 1fr;column-gap:12px}.nav{grid-column:1/-1;grid-row:1;height:34px}.model-status{display:none}.nav .icon-button{width:30px;height:30px}.stage-copy{grid-column:1;grid-row:2;padding:10px 0;align-self:start}.stage-copy .kicker{font-size:7px;margin-bottom:6px}.stage-copy h1{font-size:30px;line-height:.91;margin-bottom:8px}.lede{font-size:9px;line-height:1.3;margin-bottom:8px;max-width:230px}.scenario-tabs{margin-bottom:6px}.scenario{min-height:28px;padding:4px 8px;font-size:8px}.prediction{gap:4px;margin-bottom:5px}.prediction>span{display:none}.prediction button{min-height:28px;padding:4px 7px;font-size:8px}.run-button{min-height:30px;padding:0 9px;font-size:9px}.run-row .icon-button{width:30px;height:30px}.keyboard-hint{display:none}.viewport{grid-column:2;grid-row:2;min-height:0}.year-meter{top:8px}.year-meter span{font-size:7px}.year-meter strong{font-size:31px}.scene-label{font-size:6px}.telemetry,.feedback,.source-boundary{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}