:root{--canvas:#f3f5fa;--paper:#fff;--ink:#17205a;--on-ink:#fff;--ink-2:#3346b5;--text:#171b33;--muted:#576083;--line:#d8deee;--hl:#ffe27a;--ck1:#fff;--ck2:#e2e7f3;--bad:#b3261e}
@media (prefers-color-scheme:dark){:root{--canvas:#0f1224;--paper:#171b33;--ink:#b4bfff;--on-ink:#0f1224;--ink-2:#93a3ff;--text:#e9ecfb;--muted:#9aa3c7;--line:#2a3157;--ck1:#1e2342;--ck2:#272d52;--bad:#ff8a80}}
*{box-sizing:border-box}
body{margin:0;background:var(--canvas);color:var(--text);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
:focus-visible{outline:3px solid var(--ink-2);outline-offset:2px}
a{color:var(--ink-2)}
.top{max-width:1040px;margin:0 auto;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text);text-decoration:none}
.brand svg{width:30px;height:30px;display:block}
.top nav{display:flex;gap:22px}
.top nav a{color:var(--muted);text-decoration:none;font-size:.95rem}
.top nav a:hover{color:var(--text);text-decoration:underline}
main{max-width:1040px;margin:0 auto;padding:8px 20px 64px}
main.doc{max-width:760px}
.doc h1{font-size:2.4rem}
.doc h2{font-size:1.25rem;margin:32px 0 8px}
.muted{color:var(--muted)}
.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;margin:22px 0 40px}
@media(max-width:800px){.hero{grid-template-columns:1fr;gap:28px}}
h1{font-size:clamp(2.3rem,5.4vw,3.6rem);line-height:1.04;letter-spacing:-.03em;font-weight:800;margin:0}
h2{font-size:1.5rem;letter-spacing:-.01em;line-height:1.2;margin:0 0 14px}
.lede{color:var(--muted);font-size:1.1rem;max-width:46ch;margin:18px 0 0}
.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:22px 0 0}
.chips li{background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:4px 13px;font-size:.88rem}
.art svg{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:18px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:24px}
#drop{display:grid;place-items:center;text-align:center;min-height:230px;border:2px dashed var(--line);border-radius:12px;padding:28px;cursor:pointer;color:var(--text)}
#drop.over,#drop:hover{border-color:var(--ink-2);background:color-mix(in srgb,var(--hl) 22%,transparent)}
#drop strong{font-size:1.2rem}
#drop span{color:var(--muted);font-size:.95rem}
#drop .up{color:var(--muted)}
#drop .pick{display:inline-block;margin-top:14px;background:var(--ink);color:var(--on-ink);padding:10px 22px;border-radius:10px;font-weight:600;font-size:1rem}
button,.btn{font:inherit;border:1px solid var(--line);background:var(--paper);color:var(--text);border-radius:10px;padding:9px 15px;cursor:pointer}
button:hover{border-color:var(--ink-2)}
.primary{background:var(--ink);color:var(--on-ink);border-color:var(--ink);font-weight:600;padding:11px 22px}
#work{display:none;grid-template-columns:1.6fr 1fr;gap:26px}
#work.on{display:grid}
@media(max-width:720px){#work.on{grid-template-columns:1fr}}
.stage{display:grid;place-items:center;min-height:250px;border-radius:12px;border:1px solid var(--line);padding:18px;background-color:var(--ck1);background-image:conic-gradient(var(--ck2) 25%,transparent 0 50%,var(--ck2) 0 75%,transparent 0);background-size:20px 20px}
#out{max-width:100%;max-height:360px;height:auto}
.ctl{display:grid;gap:20px;align-content:start}
label,.lbl{display:block;font-weight:600;margin-bottom:6px}
input[type=range]{width:100%;accent-color:var(--ink-2)}
.hint{display:flex;justify-content:space-between;color:var(--muted);font-size:.85rem}
.sw{display:flex;gap:8px;flex-wrap:wrap}
.sw button[aria-pressed=true]{border-color:var(--ink-2);box-shadow:0 0 0 2px var(--ink-2)}
.dot{display:inline-block;width:12px;height:12px;border-radius:50%;margin-right:6px;vertical-align:-1px;border:1px solid var(--line)}
input[type=color]{width:44px;height:38px;padding:2px;border:1px solid var(--line);border-radius:10px;background:var(--paper);cursor:pointer}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
#info,#msg{color:var(--muted);font-size:.9rem;margin:0}
#msg{color:var(--bad);min-height:1.3em;margin-top:10px}
section{margin-top:60px}
ol{padding-left:22px;max-width:62ch;color:var(--muted)}
li{margin:5px 0}
.rel{display:grid;grid-template-columns:1fr 1fr;column-gap:36px;padding:0;margin:0;list-style:none}
@media(max-width:720px){.rel{grid-template-columns:1fr}}
.rel li{margin:0}
.rel a{display:block;padding:14px 2px;border-bottom:1px solid var(--line);color:var(--text);text-decoration:none;font-weight:600}
.rel a:hover{color:var(--ink-2)}
details{border-top:1px solid var(--line);padding:14px 0}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--muted);font-weight:400}
details[open] summary::after{content:"\2212"}
details p{color:var(--muted);margin:8px 0 0;max-width:62ch}
footer{margin-top:60px;padding-top:20px;border-top:1px solid var(--line);display:flex;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:.9rem}
footer span{margin-right:auto}
footer a{color:var(--muted)}