:root{color-scheme:dark light;--bg:#0f0e0b;--sf:#181712;--bd:#2a2820;--tx:#f3f1ea;--mu:#a9a595;--ac:#6ee7a0;--acx:#06210f;--no:#f2a65a;--er:#f2837a;--r:12px}
:root[data-theme=light]{--bg:#f7f6f1;--sf:#fff;--bd:#e4e1d6;--tx:#15140f;--mu:#5a574b;--ac:#0b7a45;--acx:#fff;--no:#b45309;--er:#b42318}
@media (prefers-color-scheme:light){:root:not([data-theme=dark]){--bg:#f7f6f1;--sf:#fff;--bd:#e4e1d6;--tx:#15140f;--mu:#5a574b;--ac:#0b7a45;--acx:#fff;--no:#b45309;--er:#b42318}}
*{box-sizing:border-box}html{scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--tx);font:17px/1.55 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--ac)}a:hover{text-decoration-thickness:2px}:focus-visible{outline:2px solid var(--ac);outline-offset:2px;border-radius:4px}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
.top{display:flex;align-items:center;gap:14px;padding:14px 0;flex-wrap:wrap}.top b{font-size:18px;letter-spacing:-.02em;margin-right:auto;display:flex;align-items:center;gap:8px}.top a{color:var(--mu);text-decoration:none;font-size:15px}.top a:hover{color:var(--tx)}
.sq{display:inline-grid;grid-template-columns:repeat(2,8px);gap:2px}.sq i{width:8px;height:8px;background:var(--ac);border-radius:2px}.sq i:nth-child(2){background:none;outline:1.5px solid var(--ac);outline-offset:-1.5px}.sq i:nth-child(3){opacity:.5}
.tt{background:none;border:1px solid var(--bd);color:var(--mu);border-radius:8px;padding:5px 10px;font-size:14px;cursor:pointer}
h1{font-size:clamp(2.4rem,7vw,4.4rem);line-height:1.04;letter-spacing:-.035em;font-weight:650;margin:34px 0 14px}h1 span{color:var(--mu)}
h2{font-size:clamp(1.5rem,3.5vw,2.25rem);letter-spacing:-.02em;font-weight:620;margin:0 0 10px;line-height:1.15}h3{font-size:18px;margin:0 0 6px;letter-spacing:-.01em}
p{margin:0 0 14px}.lead{font-size:clamp(1.05rem,2.4vw,1.25rem);color:var(--mu);max-width:62ch}.mu{color:var(--mu)}small,.sm{font-size:14px;color:var(--mu)}
section{padding:56px 0 0}.eyebrow{font:600 13px ui-monospace,Menlo,monospace;letter-spacing:.06em;text-transform:uppercase;color:var(--ac);margin-bottom:8px}
.btn,.btn2{display:inline-block;border-radius:10px;padding:12px 20px;font-weight:650;font-size:16px;text-decoration:none;border:1px solid transparent;cursor:pointer;line-height:1.2}
.btn{background:var(--ac);color:var(--acx)}.btn2{background:none;color:var(--tx);border-color:var(--bd)}.btn2:hover{border-color:var(--mu)}.btn[disabled]{opacity:.55;cursor:wait}
.card{background:var(--sf);border:1px solid var(--bd);border-radius:var(--r);padding:18px}.grid{display:grid;gap:14px}.g2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.g4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.rise{animation:rise .35s ease-out both}@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
textarea,input{width:100%;background:var(--bg);color:var(--tx);border:1px solid var(--bd);border-radius:10px;padding:10px 12px;font:14.5px ui-monospace,"SF Mono",Menlo,Consolas,monospace}textarea{resize:vertical}label{display:block;font-size:13.5px;color:var(--mu);margin:12px 0 4px}
.two{display:grid;gap:12px;grid-template-columns:1fr 1fr}@media(max-width:560px){.two{grid-template-columns:1fr}}
.seg{display:inline-flex;border:1px solid var(--bd);border-radius:10px;overflow:hidden;margin:2px 0}.seg label{margin:0;padding:7px 14px;cursor:pointer;color:var(--mu);font-size:14px}.seg input{position:absolute;opacity:0;width:0}.seg input:checked+span{color:var(--tx);font-weight:650}.seg label:has(input:checked){background:var(--bd)}.seg label:has(input:focus-visible){outline:2px solid var(--ac);outline-offset:-2px}.seg label:has(input:disabled){opacity:.5;cursor:not-allowed}
.chips{display:flex;flex-wrap:wrap;gap:8px}.chips button{background:none;border:1px solid var(--bd);color:var(--mu);border-radius:99px;padding:5px 12px;font-size:14px;cursor:pointer}.chips button:hover{color:var(--tx);border-color:var(--mu)}
.big{font-size:clamp(2.2rem,7vw,3.4rem);font-weight:700;letter-spacing:-.03em;line-height:1}.bar{height:10px;background:var(--bd);border-radius:99px;overflow:hidden;margin:10px 0}.bar i{display:block;height:100%;background:var(--ac);width:0;transition:width .3s}
.rows{margin-top:10px}.row{display:grid;grid-template-columns:14px 1fr auto auto;gap:10px;align-items:center;padding:7px 0;border-bottom:1px solid var(--bd);font-size:14.5px}.row .t{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.row code{font-family:ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums}
.vs{width:12px;height:12px;border-radius:3px;background:var(--ac)}.vs.u{background:none;outline:1.5px solid var(--mu);outline-offset:-1.5px}.vs.e{background:var(--er)}.ok{color:var(--ac);font-weight:650}.un{color:var(--no);font-weight:650}.er{color:var(--er)}
.tile b{display:block;font-size:clamp(1.6rem,4vw,2.1rem);letter-spacing:-.02em;font-variant-numeric:tabular-nums}.tile span{color:var(--mu);font-size:14px}
pre{background:var(--bg);border:1px solid var(--bd);border-radius:10px;padding:12px;overflow:auto;font:13.5px/1.5 ui-monospace,"SF Mono",Menlo,Consolas,monospace;margin:8px 0}code{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:.92em}
.steps{counter-reset:s}.steps .card{position:relative;padding-top:44px}.steps .card:before{counter-increment:s;content:counter(s);position:absolute;top:14px;left:18px;width:24px;height:24px;border-radius:7px;background:var(--ac);color:var(--acx);font-weight:700;display:grid;place-items:center;font-size:14px}
.gcards{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.gcard{text-align:left;background:var(--sf);border:1px solid var(--bd);border-radius:var(--r);padding:18px;color:var(--tx);cursor:pointer;font:inherit;display:flex;flex-direction:column;gap:8px}.gcard:hover{border-color:var(--ac)}.gcard span{color:var(--mu);font-size:14px}.gcard em{color:var(--ac);font-style:normal;font-weight:650}
.gbar{display:flex;justify-content:space-between;font:600 14px ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums;color:var(--mu)}.gprog{height:6px;background:var(--bd);border-radius:99px;overflow:hidden;margin:6px 0 16px}.gprog i{display:block;height:100%;background:var(--ac);transition:width .2s}
.gq{font-weight:650;margin:0 0 8px}.gitem{margin:0 0 14px;padding:14px;border-left:3px solid var(--ac);background:var(--bg);border-radius:0 10px 10px 0;font-size:18px}.gopts{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.gopts button{background:var(--bg);border:1px solid var(--bd);color:var(--tx);border-radius:10px;padding:14px;font:inherit;font-weight:600;cursor:pointer;min-height:48px}.gopts button:hover{border-color:var(--ac)}kbd{font:12px ui-monospace,Menlo,monospace;border:1px solid var(--bd);border-radius:5px;padding:1px 6px;color:var(--mu)}
.gbig{font-size:clamp(1.6rem,5vw,2.4rem);font-weight:700;letter-spacing:-.02em;margin:0 0 12px}.gscore{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}.gscore div{background:var(--bg);border:1px solid var(--bd);border-radius:10px;padding:12px}.gscore b{font-size:2rem;display:block}.gscore span,.gscore i{display:block;color:var(--mu);font-style:normal;font-size:14px}.gsmall{font-size:14px;color:var(--mu)}.gact{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.gmiss{padding-left:18px;font-size:14.5px}.gmiss li{margin:8px 0}
footer{margin:64px 0 0;padding:24px 0 48px;border-top:1px solid var(--bd);color:var(--mu);font-size:14px}
.doc{max-width:760px;margin:0 auto;padding:16px}.doc h1{font-size:clamp(2rem,6vw,3rem)}.doc h2{margin-top:40px}.doc table{border-collapse:collapse;width:100%;font-size:15px}.doc td,.doc th{border-bottom:1px solid var(--bd);padding:6px;text-align:left;vertical-align:top}.doc nav a{margin-right:10px}

@media(max-width:560px){.top{flex-wrap:nowrap;gap:10px}.top b{font-size:16px}.top a:not(.keep){display:none}}
:root[data-theme=light]{color-scheme:light}:root[data-theme=dark]{color-scheme:dark}