:root{
  --bg:#050506;--ink:#ecebe6;--muted:#8d9097;--dim:#5b5e64;--line:#ffffff1f;--accent:#5a8bff;--accent-ink:#050506;
  --f-display:'Archivo',ui-sans-serif,system-ui,sans-serif;--f-mono:'IBM Plex Mono',ui-monospace,Menlo,monospace;
  /* motion tokens (mirrored in js/motion.js) */
  --t-instant:120ms;--t-quick:240ms;--t-normal:450ms;--t-slow:800ms;--t-cinematic:1400ms;
  --e-out:cubic-bezier(.16,1,.3,1);--e-inout:cubic-bezier(.76,0,.24,1);--e-spring:cubic-bezier(.34,1.56,.64,1);--e-in:cubic-bezier(.5,0,.75,0);
  --gutter:clamp(16px,5vw,80px);
}
*{box-sizing:border-box}
html{scroll-padding-top:90px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.6 var(--f-display);font-variation-settings:'wdth' 100;overflow-x:clip}
h1,h2,h3,p,dl,dd,ol{margin:0;padding:0}ol{list-style:none}
a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
em{font-style:normal;color:var(--muted)}
.mono{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;font-weight:400}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:5px;border-radius:4px}
.skip{position:fixed;left:16px;top:-80px;z-index:100;background:var(--ink);color:#000;padding:12px 16px;border-radius:8px}.skip:focus{top:16px}

/* ── depth planes ─────────────────────────────── */
#bg,#fg{position:fixed;inset:0;width:100%;height:100%;display:block;pointer-events:none;z-index:0}
#fg{transition:opacity var(--t-normal)}
body.fg-over #fg{z-index:2}
main,.footer{position:relative;z-index:1}
.grain{position:fixed;inset:-50%;z-index:3;pointer-events:none;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");animation:grain 1.2s steps(6) infinite}
@keyframes grain{0%{transform:translate(0,0)}20%{transform:translate(-6%,4%)}40%{transform:translate(4%,-8%)}60%{transform:translate(-3%,7%)}80%{transform:translate(7%,2%)}}
body::before{content:'';position:fixed;inset:0;z-index:1;pointer-events:none;background:linear-gradient(90deg,#050506e0 0,#05050690 28%,transparent 58%),linear-gradient(0deg,#050506aa,transparent 30%);opacity:var(--shade,1);transition:opacity var(--t-slow)}
body.side-right::before{background:linear-gradient(270deg,#050506e0 0,#05050690 28%,transparent 58%),linear-gradient(0deg,#050506aa,transparent 30%)}

/* ── loader ───────────────────────────────────── */
.loader{position:fixed;inset:0;z-index:90;background:#000;display:grid;place-items:center;align-content:center;gap:18px;transition:opacity var(--t-slow) var(--e-out),visibility 0s var(--t-slow)}
.loader.done{opacity:0;visibility:hidden}
.loader-mark{width:120px;height:auto;color:var(--ink)}
.loader-mark .fill{transform-box:fill-box;transform-origin:left;transform:scaleX(var(--lp,0))}
.chip{fill:var(--accent)}
.loader-mark .chip{opacity:clamp(.16,calc((var(--lp,0) - .96) * 25),1);transition:opacity var(--t-quick)} /* lights up last, as loading completes */
.loader-count{font:500 13px var(--f-mono);letter-spacing:.2em;overflow:hidden;height:1.4em}
.loader-line{width:120px;height:1px;background:var(--line)}.loader-line i{display:block;height:100%;background:var(--ink);transform-origin:left;transform:scaleX(var(--lp,0))}
.loader p{font:400 10px var(--f-mono);letter-spacing:.3em;text-transform:uppercase;color:var(--muted)}

/* ── navigation capsule ───────────────────────── */
.nav{position:fixed;z-index:20;top:16px;left:50%;display:flex;align-items:center;gap:6px;padding:6px;border:1px solid var(--line);border-radius:999px;background:#0c0d0fcc;backdrop-filter:blur(18px) saturate(1.3);-webkit-backdrop-filter:blur(18px) saturate(1.3);transform:translate(-50%,var(--ny,0px));transition:transform var(--t-slow) var(--e-out),opacity var(--t-normal)}
.js .nav{opacity:0;--ny:-90px}.js body.intro-4 .nav{opacity:1;--ny:0px}
body.nav-hidden .nav{--ny:-90px}
.brand{display:flex;align-items:center;gap:10px;padding:6px 14px 6px 8px;touch-action:none}
.brand-mark{display:block;height:19px;width:auto;color:var(--ink)}
.brand-sub{font:500 8px/1.2 var(--f-mono);letter-spacing:.2em;text-transform:uppercase;color:var(--muted);border-left:1px solid var(--line);padding-left:10px}
.nav-links{position:relative;display:flex}
.nav-links a{position:relative;z-index:1;padding:9px 14px;white-space:nowrap;font-size:13px;color:var(--muted);transition:color var(--t-quick)}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--ink)}
.nav-pill{position:absolute;z-index:0;top:0;left:0;height:100%;border-radius:999px;background:#ffffff14;width:var(--pw,0);transform:translateX(var(--px,0));opacity:var(--po,0);transition:transform var(--t-normal) var(--e-out),width var(--t-normal) var(--e-out),opacity var(--t-quick)}
.menu-button{display:none;align-items:center;gap:10px;padding:10px 16px;border-radius:999px;font-size:13px}
.menu-lines{position:relative;width:16px;height:10px}.menu-lines i{position:absolute;left:0;width:100%;height:1.5px;background:currentColor;transition:transform var(--t-normal) var(--e-out)}
.menu-lines i:first-child{top:1px}.menu-lines i:last-child{bottom:1px}
.menu-button[aria-expanded=true] .menu-lines i:first-child{transform:translateY(3.5px) rotate(45deg)}
.menu-button[aria-expanded=true] .menu-lines i:last-child{transform:translateY(-3.5px) rotate(-45deg)}

/* ── buttons: hit area / fill / label / icon ──── */
.btn{position:relative;display:inline-flex;white-space:nowrap;align-items:center;gap:14px;height:52px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:500;isolation:isolate;-webkit-tap-highlight-color:transparent}
.btn>*{pointer-events:none}
.btn-fill{position:absolute;inset:0;z-index:-1;border-radius:inherit;overflow:hidden;transition:transform var(--t-normal) var(--e-out)}
.btn-fill::after{content:'';position:absolute;left:var(--fx,50%);top:var(--fy,50%);width:250%;aspect-ratio:1;border-radius:50%;transform:translate(-50%,-50%) scale(0);transition:transform var(--t-slow) var(--e-out)}
.btn:hover .btn-fill::after,.btn:focus-visible .btn-fill::after{transform:translate(-50%,-50%) scale(1)}
.btn:hover .btn-fill{transform:scaleX(1.04)}
.btn-primary{color:var(--accent-ink)}.btn-primary .btn-fill{background:var(--ink)}.btn-primary .btn-fill::after{background:var(--accent)}
.btn-ghost .btn-fill{border:1px solid #ffffff40}.btn-ghost .btn-fill::after{background:var(--ink)}.btn-ghost{transition:color var(--t-quick)}.btn-ghost:hover{color:#000}
.btn-small{height:40px;padding:0 16px;font-size:13px;color:var(--accent-ink)}.btn-small .btn-fill{background:var(--ink)}.btn-small .btn-fill::after{background:var(--accent)}
.btn-label{display:inline-grid;overflow:hidden;line-height:1.3}
.btn-label>span{grid-area:1/1;transition:transform var(--t-normal) var(--e-out)}
.btn-label>span+span{transform:translateY(105%)}
.btn:hover .btn-label>span:first-child{transform:translateY(-105%)}.btn:hover .btn-label>span+span{transform:none}
.btn-icon{display:inline-block;transition:transform var(--t-normal) var(--e-spring)}
.btn:hover .btn-icon{transform:rotate(-45deg) scale(1.15)}
.btn-icon.play{width:22px;height:22px;border-radius:50%;background:var(--accent-ink);display:grid;place-items:center}
.btn-icon.play i{width:0;height:0;border-left:7px solid var(--ink);border-top:4.5px solid transparent;border-bottom:4.5px solid transparent;margin-left:2px}
.btn:hover .btn-icon.play{transform:scale(1.2)}
.btn.pressed .btn-fill{transform:scale(.94);transition-duration:var(--t-instant)}
.btn-download.done .btn-icon{transform:none}

/* ── shared type ──────────────────────────────── */
.label{color:var(--accent);margin-bottom:28px;display:flex;align-items:center;gap:12px}
.label::before{content:'';width:22px;height:1px;background:currentColor;transform-origin:left;transform:scaleX(var(--lx,1));transition:transform var(--t-slow) var(--e-out)}
h2{font-weight:500;font-size:clamp(42px,6.2vw,96px);line-height:.96;letter-spacing:-.045em;font-variation-settings:'wdth' 92}
h3{font-weight:500;font-size:20px;letter-spacing:-.02em;line-height:1.2}
p{color:#c3c5c9}
.note{font:400 11px/1.6 var(--f-mono);letter-spacing:.04em;color:var(--muted);margin-top:24px;max-width:460px}
.stats{display:flex;gap:40px;margin-top:32px;flex-wrap:wrap}
.stats dt{font-weight:500;font-size:clamp(30px,3.4vw,48px);letter-spacing:-.04em;line-height:1;font-variant-numeric:tabular-nums}
.stats dd{font:400 10px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:10px}
.link{display:flex;justify-content:space-between;gap:20px;padding:16px 0;border-top:1px solid var(--line);font-size:15px;position:relative;transition:padding var(--t-normal) var(--e-out),color var(--t-quick)}
.link::after{content:'';position:absolute;left:0;top:-1px;width:100%;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:right;transition:transform var(--t-normal) var(--e-out)}
.link:hover{padding-left:10px;color:#fff}.link:hover::after{transform:scaleX(1);transform-origin:left}
.link span{color:var(--accent);transition:transform var(--t-normal) var(--e-spring)}.link:hover span{transform:translate(3px,-3px) rotate(-8deg)}

/* split text */
.char,.word{display:inline-block;will-change:transform}
.line{display:block;overflow:hidden;padding-bottom:.08em;margin-bottom:-.08em}
.line>span{display:block;transform:translateY(110%) rotate(3deg);transform-origin:0 100%;transition:transform var(--t-slow) var(--e-out)}
.is-active .line>span,.in .line>span{transform:none}
.was-active .line>span{transform:translateY(-110%) rotate(-2deg);transition-duration:var(--t-normal);transition-timing-function:var(--e-in)}

/* ── hero ─────────────────────────────────────── */
.hero{position:relative;min-height:100svh;padding:clamp(120px,18vh,200px) var(--gutter) 40px;display:flex;flex-direction:column}
.eyebrow{display:flex;align-items:center;gap:12px;color:var(--muted)}.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{50%{opacity:.35}}
.hero-title{font-weight:400;font-size:clamp(84px,14vw,236px);line-height:.86;letter-spacing:-.06em;margin:30px 0 28px;font-variation-settings:'wdth' var(--w,100);perspective:800px}
.hero-title em{color:var(--ink);font-weight:500}
.hero-title .char{transform-style:preserve-3d}
.hero-copy{font-size:clamp(17px,1.4vw,20px);line-height:1.5;max-width:600px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:36px}
.hero-meta{position:absolute;right:var(--gutter);top:clamp(120px,18vh,200px);text-align:right;color:var(--muted);line-height:2}
.hero-stats{display:flex;gap:clamp(24px,4vw,64px);margin-top:auto;padding-top:60px}
.hero-stats dt{font-weight:400;font-size:clamp(34px,3.6vw,56px);letter-spacing:-.05em;line-height:1;font-variant-numeric:tabular-nums}
.hero-stats small{font-size:.45em;color:var(--muted);margin-left:3px;letter-spacing:0}
.hero-stats dd{font:400 10px var(--f-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-top:10px}
.scroll-cue{position:absolute;right:var(--gutter);bottom:44px;display:flex;align-items:center;gap:14px;color:var(--muted)}
.scroll-cue i{width:1px;height:44px;background:linear-gradient(var(--ink) 50%,transparent 50%);background-size:100% 200%;animation:cue 1.8s var(--e-inout) infinite}
@keyframes cue{from{background-position:0 100%}to{background-position:0 -100%}}
[data-in]{opacity:0;transform:translateY(24px);filter:blur(6px);transition:opacity var(--t-slow) var(--e-out),transform var(--t-slow) var(--e-out),filter var(--t-slow) var(--e-out)}
body.intro-2 [data-in="1"],body.intro-3 [data-in="2"],body.intro-3 [data-in="3"],body.intro-4 [data-in="4"]{opacity:1;transform:none;filter:none}
body.intro-3 [data-in="3"]{transition-delay:120ms}
html:not(.js) [data-in]{opacity:1;transform:none;filter:none}

/* ── proposal ─────────────────────────────────── */
.proposal{min-height:190vh;padding:22vh var(--gutter) 20vh;max-width:1500px}
.proposal h2{max-width:11ch}
.scrub .word{opacity:calc(.12 + .88 * var(--o,1));transform:translateY(calc((1 - var(--o,1)) * .25em));filter:blur(calc((1 - var(--o,1)) * 4px))}
.proposal-body{display:grid;gap:22px;max-width:520px;margin-top:48px}
.lead{font-size:clamp(19px,1.6vw,23px);line-height:1.5;color:var(--ink);text-wrap:pretty}
[data-reveal]{opacity:0;transform:translateY(34px) scale(.985);filter:blur(4px);transition:opacity var(--t-slow) var(--e-out),transform var(--t-slow) var(--e-out),filter var(--t-slow) var(--e-out);transition-delay:var(--d,0ms)}
[data-reveal].in{opacity:1;transform:none;filter:none}
html:not(.js) [data-reveal]{opacity:1;transform:none;filter:none}
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:14vh;max-width:1100px;perspective:1100px}
.card{position:relative;display:flex;flex-direction:column;gap:14px;min-height:280px;padding:26px;border:1px solid var(--line);border-radius:18px;background:#0b0c0ecc;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);overflow:hidden;transform-style:preserve-3d;transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) translateZ(var(--tz,0px));transition:border-color var(--t-quick),opacity var(--t-slow) var(--e-out);opacity:0}
.cards.in .card{opacity:1}
.cards li:nth-child(2) .card{transition-delay:0ms,90ms}.cards li:nth-child(3) .card{transition-delay:0ms,180ms}
.card:hover{border-color:#ffffff40}
.card h3{margin-top:auto;transform:translateZ(30px);transition:transform var(--t-normal) var(--e-out)}
.card p{font-size:14px;line-height:1.55;transform:translateZ(18px)}
.card-n{color:var(--accent)}
.card-arrow{position:absolute;right:24px;top:22px;font-size:20px;transition:transform var(--t-normal) var(--e-spring)}
.card:hover .card-arrow{transform:translate(4px,-4px) rotate(10deg) scale(1.2)}
.card-glow{position:absolute;inset:0;pointer-events:none;background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),#5a8bff22,transparent 45%);opacity:0;transition:opacity var(--t-normal)}
.card:hover .card-glow{opacity:1}
.card:hover h3{transform:translateZ(46px) translateX(4px)}

/* ── pinned chapters ──────────────────────────── */
.pin{position:relative;height:calc(var(--len,3) * 100svh)}
.pin-stage{position:sticky;top:0;height:100svh;padding:0 var(--gutter);overflow:hidden}
.pin-stage>.label{position:absolute;top:clamp(96px,14vh,140px);left:var(--gutter)}
.step{position:absolute;left:var(--gutter);bottom:clamp(64px,12vh,120px);width:min(560px,calc(100vw - 2 * var(--gutter)));pointer-events:none}
.step.is-active{pointer-events:auto}
.step>p,.step>dl,.step>.note,.step>.telemetry,.step>.equation{opacity:0;transform:translateY(18px);transition:opacity var(--t-normal) var(--e-out),transform var(--t-normal) var(--e-out)}
.step.is-active>p,.step.is-active>dl,.step.is-active>.note,.step.is-active>.telemetry,.step.is-active>.equation{opacity:1;transform:none;transition-duration:var(--t-slow)}
.step.is-active>p{transition-delay:180ms}.step.is-active>dl,.step.is-active>.telemetry,.step.is-active>.equation{transition-delay:280ms}.step.is-active>.note{transition-delay:380ms}
.step h2{margin-bottom:26px;font-size:clamp(40px,min(6.2vw,8.4vh),96px)}
.step .stats{gap:clamp(22px,2.6vw,36px);flex-wrap:nowrap}.step .stats dt{font-size:clamp(26px,min(2.8vw,4.6vh),44px)}
html:not(.js) .pin{height:auto}html:not(.js) .pin-stage{position:relative;height:auto;padding-block:120px}html:not(.js) .step{position:relative;left:0;bottom:0;margin-bottom:80px}html:not(.js) .step>*{opacity:1;transform:none}html:not(.js) .line>span{transform:none}
.side-right .step,[data-side=right] .step{left:auto;right:var(--gutter)}
.steps-dots{position:absolute;right:var(--gutter);top:50%;display:grid;gap:10px;transform:translateY(-50%)}
.steps-dots li{width:6px;height:6px;border-radius:50%;border:1px solid #ffffff60;transition:transform var(--t-normal) var(--e-spring),background var(--t-quick)}
.steps-dots li.on{background:var(--accent);border-color:var(--accent);transform:scale(1.5)}
.giant{position:absolute;left:0;right:0;top:50%;transform:translateY(-62%);font-weight:800;font-size:clamp(90px,21vw,380px);letter-spacing:-.07em;line-height:.8;text-align:center;white-space:nowrap;color:transparent;-webkit-text-stroke:1px #ffffff38;pointer-events:none;font-variation-settings:'wdth' var(--gw,125)}
.giant .char{opacity:0;transform:translateY(40%) scale(.8);transition:opacity var(--t-slow) var(--e-out),transform var(--t-cinematic) var(--e-out);transition-delay:calc(var(--i) * 45ms)}
.is-active .giant .char{opacity:1;transform:none}
.step-scale{position:absolute;inset:0;width:auto;display:flex;flex-direction:column;justify-content:flex-end;padding:0 0 clamp(64px,12vh,120px);left:var(--gutter)}
.step-scale>h2,.step-scale>p{max-width:520px}

.telemetry{position:relative;display:grid;grid-template-columns:repeat(4,auto);gap:10px 30px;margin-top:30px;padding:18px 0 22px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);width:max-content;max-width:100%}
.telemetry span{display:block;color:var(--muted);font-size:10px;margin-bottom:6px}
.telemetry b{font:500 24px var(--f-mono);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.telemetry small{font-size:.55em;color:var(--muted);margin-left:2px}
.t-bar{position:absolute;left:0;right:0;bottom:-1px;height:2px}.t-bar i{display:block;height:100%;background:var(--accent);transform-origin:left;transform:scaleX(var(--burn,0));box-shadow:0 0 12px var(--accent)}
.equation{display:flex;align-items:baseline;gap:16px;margin-top:28px;font-variant-numeric:tabular-nums}
.equation b{font-weight:500;font-size:clamp(38px,4.4vw,64px);letter-spacing:-.05em}
.equation span{font-size:26px;color:var(--accent)}
.equation .launched{min-width:4.2ch}

/* roadmap: horizontal transformation */
.roadmap .pin-stage{display:flex;flex-direction:column;justify-content:center;gap:3.5vh;padding-top:80px}
.roadmap-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:6vw;align-items:end}
.roadmap-head .label{grid-column:1/-1;margin:0}
.roadmap-head p{font-size:15px}
.track{position:relative;outline-offset:8px}
.gates{display:flex;gap:16px;width:max-content;transform:translate3d(var(--tx,0),0,0);will-change:transform}
.gate{position:relative;width:min(340px,78vw);min-height:min(300px,34vh);padding:26px;border-radius:18px;border:1px solid var(--line);background:#0b0c0ee6;display:flex;flex-direction:column;gap:12px;transform:translateY(var(--gy,0)) rotate(var(--gr,0deg)) scale(var(--gs,1));opacity:var(--go,1)}
.gate span{color:var(--accent)}.gate p{font-size:14px;flex:1}
.gate strong{font-weight:500;font-size:26px;letter-spacing:-.03em}.gate small{font:400 11px var(--f-mono);color:var(--muted);letter-spacing:.08em}
.gate-risk{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);width:min(420px,84vw)}.gate-risk span,.gate-risk p{color:var(--accent-ink)}.gate-risk h3{font-size:30px;letter-spacing:-.04em}
.track-line{height:1px;background:var(--line);margin-top:26px}.track-line i{display:block;height:100%;background:var(--ink);transform-origin:left;transform:scaleX(var(--tp,0))}
.roadmap .note{margin-top:0}

/* evidence: masking */
.evidence{padding:24vh var(--gutter) 16vh;max-width:1400px}
.evidence h2{max-width:12ch}
.evidence-cols{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,5vw,80px);margin-top:10vh}
.mask-card{clip-path:inset(0 0 100% 0 round 18px);transform:translateY(40px);transition:clip-path var(--t-cinematic) var(--e-out),transform var(--t-cinematic) var(--e-out);transition-delay:var(--d,0ms)}
.mask-card.in{clip-path:inset(0 0 0 0 round 0);transform:none}
.mask-card h3{margin-bottom:14px}.mask-card p{margin-bottom:26px;max-width:460px}
html:not(.js) .mask-card{clip-path:none;transform:none}
.acc{margin-top:10vh;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.acc summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:24px 0;font-size:clamp(18px,1.8vw,24px);letter-spacing:-.02em;cursor:pointer}
.acc summary::-webkit-details-marker{display:none}
.acc summary i{position:relative;width:14px;height:14px;flex:none}.acc summary i::before,.acc summary i::after{content:'';position:absolute;left:0;top:50%;width:100%;height:1.5px;background:var(--accent);transition:transform var(--t-normal) var(--e-out)}
.acc summary i::after{transform:rotate(90deg)}.acc[open] summary i::after{transform:rotate(0)}.acc[open] summary i::before{transform:rotate(180deg)}
.acc-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--t-normal) var(--e-out)}
.acc-body>div{overflow:hidden}.acc-body p{max-width:760px;padding-bottom:20px}
.acc.open .acc-body{grid-template-rows:1fr}

/* how it works */
.how{margin-top:12vh;max-width:1100px}
.how-title{margin-bottom:22px}
.how-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.how-list li{padding:20px 0 0;border-top:1px solid var(--line)}
.how-list .mono{color:var(--accent)}
.how-list p{font-size:14px;line-height:1.55;margin-top:12px}
.how-list b,.cost b,.trade b{color:var(--ink);font-weight:500}

/* cost and risks */
.cost,.risks{padding:22vh var(--gutter) 6vh;max-width:1400px}
.cost h2,.risks h2{max-width:12ch}
.panel{padding:clamp(20px,2.4vw,32px);border:1px solid var(--line);border-radius:18px;background:#0b0c0ee6}
.cost-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4vw,64px);margin-top:9vh;align-items:start}
.cost-big{display:flex;flex-direction:column;gap:10px;color:var(--ink);font-weight:400;font-size:clamp(56px,6.4vw,104px);letter-spacing:-.06em;line-height:.9;margin-bottom:22px}
.cost-big small{font:400 11px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.cost-head>p:not([class]){font-size:15px}
.cost h3{margin:34px 0 8px;display:flex;justify-content:space-between;align-items:baseline}
.cost-lines h3{margin-top:0}.cost h3 .mono{color:var(--muted)}
.range{position:relative;height:58px;margin-top:30px;border-bottom:1px solid var(--line)}
.range i{position:absolute;left:calc(var(--a) * 100%);width:calc((var(--b) - var(--a)) * 100%);border-radius:2px}
.range-abs{top:6px;height:18px;border:1px solid var(--muted)}
.range-eco{top:10px;height:10px;background:var(--accent)}
.range-nom{top:0;height:30px;width:2px!important;background:var(--ink)}
.range span{position:absolute;left:calc(var(--a) * 100%);bottom:4px;font:400 10px var(--f-mono);color:var(--muted);white-space:nowrap}
.range span:last-child{transform:translateX(-50%)}
.range-key{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:12px;color:var(--muted);font-size:10px}
.range-key span{display:inline-flex;align-items:center;gap:8px}.range-key i{width:14px;height:8px;border-radius:2px}
.k-eco{background:var(--accent)}.k-abs{border:1px solid var(--muted)}.range-key .k-nom{width:2px;height:14px;background:var(--ink)}
.bars li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 16px;padding:11px 0 10px;border-top:1px solid var(--line);font-size:14px;color:#c3c5c9}
.bars b{font:500 13px var(--f-mono);color:var(--ink)}
.bars i{grid-column:1/-1;height:3px;border-radius:2px;background:var(--accent);transform-origin:left;transform:scaleX(0);transition:transform var(--t-cinematic) var(--e-out);transition-delay:calc(var(--k) * 60ms + 200ms)}
.bars.in i,html:not(.js) .bars i{transform:scaleX(max(var(--v),.006))}
.bars-drivers i{background:var(--ink)}
.trade{margin-top:12vh;max-width:900px}
.trade h3{margin:0 0 14px}.trade>p:not(.note){max-width:640px;font-size:15px}
.table-wrap{margin-top:26px;overflow-x:auto}
.trade table{width:100%;min-width:480px;border-collapse:collapse;font:400 13px var(--f-mono);font-variant-numeric:tabular-nums}
.trade th,.trade td{text-align:left;padding:12px 14px 12px 0;border-top:1px solid var(--line);white-space:nowrap}
.trade thead th{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:400;border-top:0}
.trade tbody th{font-weight:500;color:var(--ink)}.trade td{color:#c3c5c9}
.trade tr .mono{margin-left:8px;font-size:9px;padding:2px 6px;border-radius:99px;border:1px solid currentColor}
.trade .is-rule .mono{color:var(--muted)}
.trade .is-plan th,.trade .is-plan td{color:var(--ink);background:#5a8bff14}.trade .is-plan .mono{color:var(--accent)}
.risks-lead{max-width:560px;margin-top:40px;font-size:clamp(17px,1.4vw,20px);line-height:1.5}
.risk-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:8vh;max-width:1100px}
.risk-list li{display:grid;align-content:start;gap:12px}
.risk-list .mono{color:var(--accent)}.risk-list b{color:var(--ink);font-weight:500}.cost .risk-list h3{margin:0;display:block}.invest+.note,#history .note{max-width:760px}.history-link{max-width:460px;margin-top:20px}.risk-list p{font-size:14px;line-height:1.55}
.sources{margin-top:10vh;max-width:900px}
.sources h3{margin-bottom:16px}
.sources ul{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.sources li{font-size:13px;line-height:1.55;color:var(--muted);padding-left:18px;position:relative}
.sources li::before{content:'';position:absolute;left:0;top:.7em;width:8px;height:1px;background:var(--accent)}
.sources a{color:var(--ink);text-decoration:underline;text-decoration-color:#ffffff40;text-underline-offset:3px}.sources a:hover{text-decoration-color:var(--accent)}

/* closing */
.closing{min-height:120vh;padding:30vh var(--gutter) 14vh;display:flex;flex-direction:column;align-items:flex-start}
.closing-title{font-weight:400;font-size:clamp(64px,10vw,180px);line-height:.88;letter-spacing:-.06em;font-variation-settings:'wdth' var(--w,100);margin-bottom:28px}
.closing-title em{color:var(--ink);font-weight:500}
.closing>p{max-width:520px}
.closing-actions{display:flex;align-items:center;gap:32px;margin-top:40px;flex-wrap:wrap}
.closing-actions .link{border:0;padding:0;gap:10px}

/* footer physics */
.footer{border-top:1px solid var(--line);background:linear-gradient(transparent,#000 40%)}
.playground{position:relative;height:clamp(260px,42vh,420px);overflow:hidden;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.glyph{position:absolute;left:0;top:0;font-weight:800;font-size:clamp(56px,10vw,150px);line-height:1;letter-spacing:-.04em;will-change:transform;cursor:grab;touch-action:none}
.glyph.grab{cursor:grabbing;color:var(--accent)}
.footer-row{display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between;padding:22px var(--gutter) 28px;font-size:12px;color:var(--muted);border-top:1px solid var(--line)}
.footer-row a:hover{color:var(--ink)}
.footer-row{padding-right:calc(var(--gutter) + 56px)}   /* room for the motion button, which stays in the corner */.hint{color:var(--muted)}

/* ── overlays ─────────────────────────────────── */
.labels{position:fixed;inset:0;z-index:4;pointer-events:none}
.label-lines{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.label-lines line{stroke:#ffffffa0;stroke-width:1}.label-lines circle{fill:none;stroke:var(--accent);stroke-width:1.5}
.labels>.label{position:absolute;left:0;top:0;display:grid;gap:3px;margin:0;padding:10px 12px;border-left:1px solid var(--accent);background:#050506b0;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);opacity:0;transition:opacity var(--t-normal);white-space:nowrap}
.labels>.label::before{display:none}
.labels>.label b{font-weight:500;font-size:13px;color:var(--ink);letter-spacing:0;text-transform:none}
.labels>.label span{font:400 10px var(--f-mono);letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
.labels>.label.on{opacity:1}

.hud{position:fixed;z-index:20;right:calc(var(--gutter) + 52px);bottom:22px;padding:9px 16px 11px;border:1px solid var(--line);border-radius:14px;background:#0c0d0fcc;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);display:grid;grid-template-columns:auto auto;gap:4px 16px;align-items:center;opacity:0;transform:translateY(20px);transition:opacity var(--t-normal),transform var(--t-slow) var(--e-out)}
body.hud-on .hud{opacity:1;transform:none}
.hud-index{color:var(--accent)}.hud-name{font-size:12px;color:var(--ink);overflow:hidden;height:1.5em}
.hud-name span{display:block;animation:roll var(--t-normal) var(--e-out)}
@keyframes roll{from{transform:translateY(100%);opacity:0}}
.hud-track{grid-column:1/-1;width:200px;height:1px;background:var(--line)}.hud-fill{display:block;height:100%;background:var(--ink);transform-origin:left;transform:scaleX(var(--hp,0))}
.hud-tele{grid-column:1/-1;color:var(--muted);font-size:10px}
.motion-toggle{position:fixed;z-index:20;right:var(--gutter);bottom:22px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#0c0d0fcc;backdrop-filter:blur(10px);display:grid;place-items:center;transition:transform var(--t-normal) var(--e-spring)}
.motion-toggle:hover{transform:scale(1.1)}
.mt-icon{position:relative;width:10px;height:12px}.mt-icon i{position:absolute;top:0;width:3px;height:100%;background:var(--ink);transition:transform var(--t-normal) var(--e-out),clip-path var(--t-normal) var(--e-out)}
.mt-icon i:first-child{left:0}.mt-icon i:last-child{right:0}
.motion-toggle[aria-pressed=true] .mt-icon i:first-child{width:10px;clip-path:polygon(0 0,100% 50%,100% 50%,0 100%)}
.motion-toggle[aria-pressed=true] .mt-icon i:last-child{transform:scaleY(0)}

.sweep{position:fixed;inset:0;z-index:60;pointer-events:none;visibility:hidden}
.sweep.run{visibility:visible}
.sweep-panel{position:absolute;inset:0;background:var(--ink);transform:translateX(-101%) skewX(-8deg) scaleX(1.2)}
.sweep-text{position:absolute;left:0;top:50%;white-space:nowrap;font-weight:800;font-size:clamp(80px,16vw,260px);letter-spacing:-.06em;color:var(--bg);transform:translate(100vw,-50%);font-variation-settings:'wdth' 125}
.letterbox i{position:fixed;left:0;right:0;z-index:15;height:10vh;background:#000;transform:scaleY(0);transition:transform var(--t-slow) var(--e-inout);pointer-events:none}
.letterbox i:first-child{top:0;transform-origin:top}.letterbox i:last-child{bottom:0;transform-origin:bottom}
body.film .letterbox i{transform:scaleY(1)}
body.film .hud,body.film .motion-toggle{opacity:0}
.toast{position:fixed;z-index:70;left:50%;top:84px;transform:translate(-50%,-20px);opacity:0;padding:10px 18px;border-radius:999px;background:var(--accent);color:var(--accent-ink);font:500 12px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;transition:opacity var(--t-quick),transform var(--t-normal) var(--e-spring);pointer-events:none}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* menu */
.menu{position:fixed;inset:0;width:100%;height:100%;max-width:none;max-height:none;margin:0;padding:clamp(20px,4vw,48px) var(--gutter);border:0;background:#050506f0;color:var(--ink);display:none;grid-template-rows:auto 1fr;overflow:auto}
.menu[open]{display:grid}
.menu::backdrop{background:transparent}
.menu-head{display:flex;justify-content:space-between;align-items:center;color:var(--muted)}
.menu-close{width:52px;height:52px;border-radius:50%;border:1px solid var(--line);font-size:26px;display:grid;place-items:center;transition:transform var(--t-normal) var(--e-spring)}.menu-close:hover{transform:rotate(90deg)}
.menu-list{align-self:center;display:grid;padding:4vh 0}
.menu-list a{display:flex;align-items:baseline;gap:22px;padding:6px 0;border-bottom:1px solid var(--line);overflow:hidden}
.menu-list b{display:block;font-weight:500;font-size:clamp(26px,min(5.4vw,5.6vh),72px);letter-spacing:-.045em;line-height:1.08;transition:transform var(--t-normal) var(--e-out),color var(--t-quick);transform:translateY(110%)}
.menu-list .mono{color:var(--accent);min-width:2.4em;opacity:0;transition:opacity var(--t-normal)}
.menu.show .menu-list b{transform:none;transition-duration:var(--t-slow);transition-delay:calc(var(--i) * 45ms)}
.menu.show .menu-list .mono{opacity:1;transition-delay:calc(var(--i) * 45ms + 200ms)}
.menu-list a:hover b,.menu-list a:focus-visible b{transform:translateX(18px);color:var(--accent);transition-delay:0ms}
.menu-list:hover a:not(:hover) b{color:var(--dim)}
.menu-preview{position:fixed;right:var(--gutter);bottom:6vh;font-weight:800;font-size:clamp(60px,12vw,200px);letter-spacing:-.06em;color:transparent;-webkit-text-stroke:1px #ffffff40;pointer-events:none;overflow:hidden;line-height:1}
.menu-preview span{display:block}
.menu.closing .menu-list b{transform:translateY(-110%);transition:transform var(--t-normal) var(--e-in);transition-delay:calc(var(--i) * 20ms)}
.menu.closing{opacity:0;transition:opacity var(--t-normal) .15s}
body.menu-open main,body.menu-open #bg,body.menu-open #fg{transform:scale(.93) translateY(2vh);filter:brightness(.4);transition:transform var(--t-slow) var(--e-out),filter var(--t-slow)}
main,#bg,#fg{transition:transform var(--t-slow) var(--e-out),filter var(--t-slow);transform-origin:50% 50vh}

/* cursor */
.cursor{position:fixed;left:0;top:0;z-index:80;pointer-events:none;mix-blend-mode:difference}
.cursor-dot{position:absolute;width:6px;height:6px;margin:-3px;border-radius:50%;background:#fff}
.cursor-ring{position:absolute;width:40px;height:40px;margin:-20px;border-radius:50%;border:1px solid #fff;display:grid;place-items:center;transition:width var(--t-normal) var(--e-out),height var(--t-normal) var(--e-out),margin var(--t-normal) var(--e-out),background var(--t-quick),border-color var(--t-quick)}
.cursor-ring b{font:500 9px var(--f-mono);letter-spacing:.14em;color:#000;opacity:0;transition:opacity var(--t-quick)}
.cursor.hover .cursor-ring{width:64px;height:64px;margin:-32px;background:#ffffff18}
.cursor.text .cursor-ring{width:76px;height:76px;margin:-38px;background:#fff}.cursor.text .cursor-ring b{opacity:1}
.cursor.down .cursor-ring{width:30px;height:30px;margin:-15px}
.cursor.hide{opacity:0}
html.has-cursor,html.has-cursor a,html.has-cursor button,html.has-cursor summary{cursor:none}
.trail{position:fixed;left:0;top:0;z-index:5;pointer-events:none;width:44px;height:44px;margin:-22px;border-radius:50%;border:1px solid var(--accent);opacity:0;background:repeating-radial-gradient(circle,transparent 0 4px,#5a8bff30 4px 5px)}

/* touch feedback */
.touch-press{transform:scale(.96)!important;transition:transform var(--t-instant)!important}

/* ── responsive choreography ──────────────────── */
@media (max-width:1100px){.how-list{grid-template-columns:repeat(2,minmax(0,1fr))}.nav-links{display:none}.menu-button{display:inline-flex}.cards{grid-template-columns:1fr;max-width:560px}.card{min-height:200px}}
@media (max-width:760px){
  .brand-sub{display:none}.nav{gap:2px}.btn-small .btn-label{display:none}.btn-small{padding:0 14px}
  .hero{padding-top:110px}.hero-meta{display:none}.hero-title{margin:22px 0 20px}
  .hero-stats{gap:22px}.scroll-cue{display:none}
  body::before{background:linear-gradient(0deg,#050506f5 0,#050506c0 42%,transparent 70%)!important}
  .step{bottom:84px}.pin-stage>.label{top:88px}
  .steps-dots{top:auto;bottom:40px;right:auto;left:var(--gutter);display:flex;transform:none}
  .stats{gap:26px}.telemetry{grid-template-columns:repeat(2,auto)}
  .roadmap-head{grid-template-columns:1fr;gap:18px}.roadmap-head p{display:none}
  .roadmap .track{overflow-x:auto;scroll-snap-type:x mandatory;margin:0 calc(-1 * var(--gutter));padding:0 var(--gutter);scrollbar-width:none}
  .roadmap .gates{transform:none!important}.gate{scroll-snap-align:center;--gy:0!important;--gr:0deg!important;--gs:1!important;--go:1!important}
  .roadmap.pin{height:auto}.roadmap .pin-stage{position:relative;height:auto;padding-block:120px 60px}
  .evidence-cols{grid-template-columns:1fr}
  .cost-grid,.risk-list{grid-template-columns:1fr}.how-list{grid-template-columns:1fr;gap:0}
  .cost,.risks{padding-top:16vh}
  .trade table{min-width:0;font-size:12px}.trade th,.trade td{padding-right:10px}.trade tr .mono{display:table;margin:5px 0 0}.trade thead th{white-space:normal;vertical-align:bottom;letter-spacing:.08em}
  .step .stats dt{white-space:nowrap}
  .hud{display:none}
  .step h2{font-size:clamp(34px,10vw,44px);margin-bottom:16px}
  .step>p{font-size:15px;line-height:1.5}
  .step .stats{flex-wrap:nowrap;gap:22px;margin-top:20px}.step .stats dt{font-size:26px}
  .step .note{margin-top:14px;font-size:10px}
  .telemetry{margin-top:18px;padding:12px 0 14px}.telemetry b{font-size:18px}
  .equation b{font-size:34px}
  .labels>.label{padding:7px 9px}.labels>.label b{font-size:12px}.labels>.label span{font-size:9px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:1ms!important;animation-iteration-count:1!important;transition-duration:1ms!important;transition-delay:0ms!important}
  .grain{display:none}
}
html.motion-off .grain{animation:none}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
body.no-webgl #bg,body.no-webgl #fg{display:none}
body.no-webgl{background:radial-gradient(ellipse 120% 60% at 70% 110%,#1c1d20 0,#050506 60%) fixed}
[tabindex="-1"]:focus{outline:none}
.mask-card:nth-child(2){--d:160ms}
.footer-brand{display:inline-flex;align-items:center;gap:12px}.footer-brand img{height:15px;width:auto}
#beam .step{bottom:clamp(36px,6vh,72px)}#beam .step h2{margin-bottom:16px}#beam .telemetry{margin-top:20px;padding:14px 0 16px}#beam .stats{margin-top:22px}
.step-scale{right:var(--gutter)}