:root{--bg:#000;--bg2:#0b0b0c;--card:#111113;--fg:#f5f5f2;--mut:#8c8c90;--line:#26262a;--acc:#00d64f;--acc2:#1f3d2a;--r:24px;
--sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Inter,Roboto,Arial,sans-serif;--mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}.narrow{max-width:820px}
a{color:inherit}
.top{position:sticky;top:0;z-index:5;background:#000c;backdrop-filter:blur(12px);border-bottom:1px solid #ffffff10}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;font-size:19px;text-decoration:none}
.mark{width:22px;height:22px;border-radius:7px;background:var(--acc);box-shadow:inset -7px -7px 0 #000}
nav{display:flex;gap:4px}nav a{font:13px var(--mono);color:var(--mut);text-decoration:none;padding:8px 12px;border-radius:99px}nav a:hover{color:var(--fg);background:#ffffff10}
@media(max-width:720px){nav{display:none}}
.eyebrow{font:600 12px var(--mono);text-transform:uppercase;letter-spacing:.14em;color:var(--mut);margin:0 0 18px}
h1,h2{font-weight:800;letter-spacing:-.045em;line-height:.98;margin:0}
h1{font-size:clamp(30px,4.6vw,64px);max-width:14ch}
h2{font-size:clamp(36px,5.5vw,68px);max-width:16ch;margin-bottom:28px}
h3{font-size:20px;letter-spacing:-.02em;margin:0 0 6px}
.acc{color:var(--acc)}
.lede,.sub{color:var(--mut);font-size:clamp(17px,1.6vw,21px);max-width:44ch;margin:24px 0 0}.sub{margin:-8px 0 40px}
section{padding:clamp(80px,12vw,160px) 0}.hero{padding-top:clamp(64px,9vw,120px)}
.band{background:var(--bg2);border-block:1px solid #ffffff0a}
.green{background:var(--acc);color:#000}.green .eyebrow,.green .sub{color:#000b}
/* calculator */
.calc{display:grid;grid-template-columns:minmax(280px,380px) 1fr;margin-top:64px;border:1px solid var(--line);border-radius:28px;background:var(--card);overflow:hidden}
@media(max-width:880px){.calc{grid-template-columns:1fr}}
.inputs{padding:32px;display:flex;flex-direction:column;gap:18px;border-right:1px solid var(--line)}
@media(max-width:880px){.inputs{border-right:0;border-bottom:1px solid var(--line);padding:24px}}
label,legend{font:500 12px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--mut)}
fieldset{border:0;margin:0;padding:0}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.in{display:flex;align-items:center;margin-top:8px;background:#000;border:1px solid var(--line);border-radius:16px;padding:0 16px;transition:border-color .2s}
.in:focus-within{border-color:var(--acc)}
.in i{font:normal 16px var(--mono);color:var(--mut)}
.in input{flex:1;min-width:0;background:none;border:0;outline:0;color:var(--fg);font:500 18px var(--mono);padding:14px 6px;font-variant-numeric:tabular-nums}
.seg{display:flex;margin-top:8px;border:1px solid var(--line);border-radius:99px;padding:4px;background:#000}
.seg input{position:absolute;opacity:0}
.seg label{flex:1;text-align:center;padding:9px 0;border-radius:99px;cursor:pointer;color:var(--mut);letter-spacing:.04em}
.seg input:checked+label{background:var(--fg);color:#000}
.seg input:focus-visible+label{outline:2px solid var(--acc);outline-offset:2px}
.tog{display:flex;gap:12px;align-items:center;text-transform:none;letter-spacing:0;font:14px var(--sans);color:var(--fg);cursor:pointer}
.tog input{appearance:none;width:44px;height:26px;border-radius:99px;background:#2a2a2e;position:relative;flex:none;cursor:pointer;transition:background .2s}
.tog input::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:transform .2s}
.tog input:checked{background:var(--acc)}.tog input:checked::after{transform:translateX(18px)}
.tog input:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
.out{padding:40px;display:flex;flex-direction:column;gap:28px;min-width:0}
@media(max-width:880px){.out{padding:24px}}
.k{display:flex;align-items:center;gap:8px;font:500 12px var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--mut)}.k em{font-style:normal;text-transform:none}
.big .v{display:block;font:600 clamp(48px,7vw,92px)/1 var(--sans);letter-spacing:-.04em;margin-top:12px;font-variant-numeric:tabular-nums;color:var(--fg);overflow-wrap:anywhere}
.stats{display:flex;gap:40px;flex-wrap:wrap}.stats .v{display:block;font:500 22px var(--mono);margin-top:6px;font-variant-numeric:tabular-nums}
.sw{width:10px;height:10px;border-radius:50%;display:inline-block}.sw.a{background:var(--acc2);box-shadow:inset 0 0 0 1px #3d7a52}.sw.b{background:var(--acc)}
.chart{height:280px;width:100%;outline:0;border-radius:12px}.chart:focus-visible{box-shadow:0 0 0 2px var(--acc)}
.chart svg{width:100%;height:100%;display:block;overflow:visible}.chart text{fill:var(--mut);font:11px var(--mono)}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{font:600 14px var(--mono);border-radius:99px;padding:14px 26px;cursor:pointer;border:1px solid var(--fg);background:var(--fg);color:#000;transition:transform .15s,background .2s}
.btn:hover{transform:translateY(-1px)}.btn:focus-visible{outline:2px solid var(--acc);outline-offset:3px}
.btn.ghost{background:transparent;color:var(--fg);border-color:#ffffff40}.btn.ghost:hover{border-color:var(--fg)}
.tbl{margin-top:24px;border:1px solid var(--line);border-radius:var(--r);overflow:auto;max-height:520px;background:var(--card)}
table{width:100%;border-collapse:collapse;font:13px var(--mono);font-variant-numeric:tabular-nums}
th,td{padding:12px 16px;text-align:right;white-space:nowrap;border-bottom:1px solid var(--line)}th{position:sticky;top:0;background:var(--card);color:var(--mut);font-weight:500;text-transform:uppercase;font-size:11px;letter-spacing:.08em}
th:first-child,td:first-child{text-align:left}td b{color:var(--acc);font-weight:500}
.tip{position:fixed;pointer-events:none;background:var(--fg);color:#000;padding:12px 14px;border-radius:14px;font:12px/1.6 var(--mono);z-index:9;font-variant-numeric:tabular-nums;box-shadow:0 10px 30px #0008}
/* penny */
.sl{display:flex;align-items:center;gap:16px;font-size:13px}.sl b{color:var(--fg);font:600 18px var(--mono);min-width:2ch}
input[type=range]{flex:1;accent-color:var(--acc);height:28px}
.pv{font:300 clamp(56px,10vw,128px)/1 var(--sans);letter-spacing:-.05em;color:var(--acc);margin:32px 0 40px;font-variant-numeric:tabular-nums}
.bars{display:flex;align-items:flex-end;gap:4px;height:200px}
.bars div{flex:1;background:#2a2a2e;border-radius:6px 6px 2px 2px;min-height:3px;transition:height .3s,background .3s}
.bars div.on{background:var(--acc)}.bars div.off{opacity:.25}
.note{color:var(--mut);margin-top:28px;font-size:17px;max-width:60ch}
/* folds */
.folds{margin:0;border-radius:28px;overflow:hidden;background:#0b0b0c;box-shadow:0 30px 80px #0005}
.folds img{display:block;width:100%;height:auto}
@media(max-width:640px){.folds{overflow-x:auto;-webkit-overflow-scrolling:touch}.folds img{width:960px;max-width:none}}
/* early */
.ctl{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:end;margin-bottom:32px}
.ctl label:last-child{display:flex;flex-direction:column;gap:6px}.ctl b{color:var(--fg);font:600 16px var(--mono)}
@media(max-width:600px){.ctl,.duo{grid-template-columns:1fr!important}}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.card{border:1px solid var(--line);border-radius:var(--r);padding:32px;background:var(--card)}
.card p{color:var(--mut);margin:0 0 24px}
dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:10px 16px;align-items:baseline}
dt{font:12px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--mut)}dd{margin:0;text-align:right;font:500 18px var(--mono);font-variant-numeric:tabular-nums}
dd.hl{font:300 clamp(30px,4vw,42px)/1.1 var(--sans);letter-spacing:-.03em;color:var(--acc)}
.verdict{font-size:clamp(20px,2.4vw,28px);letter-spacing:-.02em;line-height:1.35;margin-top:40px;max-width:30ch}.verdict b{color:var(--acc);font-weight:700}
/* drag */
.rows{display:flex;flex-direction:column;gap:24px}
.lab{display:flex;justify-content:space-between;gap:16px;margin-bottom:10px;font-size:15px}.lab b{font:500 16px var(--mono);font-variant-numeric:tabular-nums}
.track{height:12px;border-radius:99px;background:#1c1c1f;overflow:hidden}.fill{height:100%;border-radius:99px;background:var(--acc)}
.r:nth-child(2) .fill,.r:nth-child(4) .fill{background:#5e5e64}
/* math */
#math p,#math li{color:#c8c8c4;max-width:64ch}#math h3{margin-top:48px}#math ul{padding-left:20px}#math li{margin:8px 0}
.formula{font:500 clamp(16px,2.2vw,22px) var(--mono);color:var(--fg)!important;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;overflow-x:auto;white-space:nowrap}
footer{border-top:1px solid var(--line);padding:48px 0 64px}footer p{color:var(--mut);font:12px var(--mono);margin:0}
.calc{grid-template-columns:minmax(0,380px) minmax(0,1fr)}@media(max-width:880px){.calc{grid-template-columns:minmax(0,1fr)}}
.inputs,.inputs label,.row2>*{min-width:0}.row2{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.inputs label{display:block}.inputs .tog{display:flex}.in input{width:100%}
footer .credits{margin-top:10px;font-size:11px;opacity:.8}footer .credits a{color:var(--mut)}
.swipe{display:none}@media(max-width:640px){.swipe{display:block;font:600 12px var(--mono);text-transform:uppercase;letter-spacing:.1em;color:#000b;margin:14px 0 0}}

h1 .h1k{display:block;line-height:1.6;letter-spacing:.14em}
.folds picture{display:contents}
.faq details{border-top:1px solid var(--line);padding:18px 0}.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:700;font-size:19px;letter-spacing:-.02em;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}.faq summary::after{content:"+";color:var(--acc);font:600 20px var(--mono)}.faq details[open] summary::after{content:"−"}
.faq p{color:var(--mut);margin:10px 0 0;max-width:62ch}

.race{display:grid;gap:16px;margin-top:8px}
.person{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:8px 32px;align-items:end;border:1px solid var(--line);border-radius:var(--r);padding:32px;background:var(--card)}
.pyrs{font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.035em;line-height:1.05;margin:0 0 8px}
.ages{font:500 13px var(--mono);color:var(--mut);margin:0 0 20px}
.person dl{margin:0;display:flex;gap:12px;align-items:baseline}.person dt{font:500 12px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--mut)}.person dd{margin:0;font:600 20px var(--mono);font-variant-numeric:tabular-nums}
.pout{text-align:right}.pout .k{display:block;font:500 12px var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--mut)}
.pbal{display:block;font:600 clamp(44px,6.4vw,80px)/1 var(--sans);letter-spacing:-.04em;font-variant-numeric:tabular-nums;margin-top:8px}
.tl{grid-column:1/-1;display:grid;grid-template-columns:repeat(40,1fr);gap:2px;margin-top:20px}.tl i{height:14px;border-radius:3px;background:#26262a}.tl i.on{background:var(--acc)}
.tlk{display:flex;justify-content:space-between;font:12px var(--mono);color:var(--mut);padding:0 33px}
.legend{font:12px var(--mono);color:var(--mut);margin:0;display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;padding:0 33px}.legend .sw{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:6px;vertical-align:-1px}.legend .on{background:var(--acc)}.legend .off{background:#26262a}
@media(max-width:640px){.person{grid-template-columns:1fr;padding:24px}.pout{text-align:left;margin-top:12px}.tlk,.legend{padding:0 25px}}

.wq{margin:0;max-width:30ch}.wq p{margin:0;font-weight:800;font-size:clamp(30px,4.4vw,56px);letter-spacing:-.04em;line-height:1.04}
.wq footer{all:unset;display:block;margin-top:18px;font:600 14px var(--mono);letter-spacing:.08em;color:var(--acc)}
.wsub{margin:24px 0 56px}
.wgrid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:20px;align-items:stretch}
.wcol{border:1px solid var(--line);border-radius:var(--r);padding:36px;background:var(--card);min-width:0}
.wcol.green{border-color:transparent}
.wh{font-size:clamp(22px,2.2vw,28px);font-weight:800;letter-spacing:-.03em;line-height:1.1;margin:0 0 24px;max-width:22ch}
.wcol .pv{font-size:clamp(40px,4.4vw,60px);margin:28px 0 32px;overflow-wrap:anywhere}
.wcol .bars{height:180px}.wcol .note{font-size:15px}
.fv{font:600 clamp(40px,4.4vw,60px)/1 var(--sans);letter-spacing:-.04em;font-variant-numeric:tabular-nums;margin:0 0 16px}
.fsub{color:#000b;margin:0 0 24px;font-size:15px;max-width:52ch}
.wcol .folds{border-radius:18px}
@media(max-width:900px){.wgrid{grid-template-columns:1fr}.wcol{padding:24px}}
.wcol,#wonder{scroll-margin-top:72px}
.wq{max-width:none}.wq p{max-width:24ch}
.wcol.green{background:var(--acc);color:#000}
.wcol .pv{font-size:clamp(34px,3.5vw,50px);white-space:nowrap;overflow-wrap:normal}
.fv{font-size:clamp(34px,3.5vw,50px)}
#wonder .wsub{color:var(--acc);font-size:clamp(22px,3.3vw,41px);font-weight:500;letter-spacing:-.02em;line-height:1.2;max-width:none}

.pday{font:600 13px var(--mono);letter-spacing:.06em;color:var(--mut);margin:28px 0 -18px;font-variant-numeric:tabular-nums;min-height:1.6em}
#pb{cursor:crosshair;touch-action:pan-y;outline:0;border-radius:8px}#pb:focus-visible{outline:2px solid var(--acc);outline-offset:6px}
#pb.hovering div{opacity:.35}#pb.hovering div.hov{opacity:1;background:var(--acc)}
.nf-cta{margin-top:40px}.nf-btn{text-decoration:none;display:inline-block}