:root{color-scheme:dark;--bg:#0a0d12;--panel:#141a22;--raised:#202833;--line:#364251;--blue:#285de0;--gold:#d7bb76;--text:#fff;--muted:#aab5c6}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,sans-serif}a{color:var(--gold);text-underline-offset:4px}header,main{max-width:1280px;margin:auto;padding:24px 36px}header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{display:flex;gap:20px;align-items:center;text-decoration:none;font:30px Georgia,serif;letter-spacing:2px}.brand img{object-fit:contain}.sub{display:block;font:13px/1.6 system-ui;color:var(--muted);letter-spacing:0}h1,h2,h3{font-family:Georgia,serif;font-weight:400;line-height:1.2}h1{font-size:clamp(36px,4.6vw,60px);margin:0 0 20px}h2{font-size:28px;margin:0 0 16px}h3{font-size:24px}p{max-width:72ch}.intro{padding:40px 0}.intro p{font-size:19px;color:var(--muted);max-width:65ch}.badge{display:inline-block;color:var(--gold);font-size:13px;background:#2d2718;padding:6px 10px;border-radius:6px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:28px;margin:24px 0}.muted,small{color:var(--muted);font-size:14px}label{display:block;margin:14px 0 6px;font-size:14px}input,textarea,select,button{font:inherit}input,textarea,select{background:var(--bg);border:1px solid var(--line);color:white;border-radius:8px;padding:11px 12px;width:100%;min-height:46px;max-width:100%}button{background:var(--blue);border:1px solid transparent;color:white;border-radius:8px;padding:11px 18px;min-height:46px;font-weight:600;cursor:pointer;margin-top:16px}button:hover{filter:brightness(1.12)}button:disabled{opacity:.5;cursor:wait}.secondary{background:var(--raised);border-color:var(--line)}:focus-visible{outline:2px solid var(--gold);outline-offset:3px}::selection{background:var(--blue);color:white}.project{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:28px 0}.project p{color:var(--muted)}dl{display:flex;gap:56px;flex-wrap:wrap}dt{color:var(--muted);font-size:13px}dd{margin:4px 0;font-size:28px;font-variant-numeric:tabular-nums}.lab{display:grid;grid-template-columns:260px minmax(0,1fr);gap:28px;margin:32px 0}.lab aside{padding-top:24px}.lab aside h2{font-size:22px}.scenario{display:block;background:transparent;border:1px solid var(--line);width:100%;text-align:left;font-size:14px;margin:10px 0}.scenario[aria-pressed=true]{background:#192b50;border-color:var(--blue)}.experiment{margin:0;min-height:400px}.proof{padding:0;list-style:none;border-top:1px solid var(--line)}.proof li{display:grid;grid-template-columns:150px 1fr;gap:12px;padding:18px 0;border-bottom:1px solid var(--line)}.proof li>span{color:var(--muted);font-size:14px}.proof small{grid-column:2}.proof strong{font-size:20px}.attempt{display:block;margin-bottom:6px}#outcome{color:var(--gold)}details{margin-top:20px}summary{cursor:pointer;min-height:44px;padding:10px 0;color:var(--muted)}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px}#history button{display:block;width:100%;text-align:left;background:var(--raised)}.evaluation{display:grid;grid-template-columns:1fr 1fr;gap:40px}.evaluation h2{font-size:34px}fieldset{border:0;margin:0;padding:0;min-width:0}legend{font-weight:600}.check{display:flex;align-items:start;gap:10px}.check input{width:20px;min-height:20px;margin-top:3px}.row{border-bottom:1px solid var(--line);padding:14px 0;overflow-wrap:anywhere}.row button{margin:8px 0 0 12px}#message{color:var(--gold)}#access-form,#invitation-form{max-width:620px}footer{color:var(--muted);font-size:13px;padding:24px 0 48px}.skip{position:absolute;top:-100px}.skip:focus{top:0;z-index:10;background:var(--bg);padding:10px}[hidden]{display:none!important}@media(max-width:750px){header,main{padding:20px}.brand{font-size:24px;gap:12px}.brand img{width:64px;height:64px}.sub{font-size:11px}header>a:last-child{font-size:12px}.intro{padding:30px 0}.panel{padding:20px}.lab,.evaluation{grid-template-columns:1fr;gap:18px}.lab aside{padding:0}.scenario{min-height:46px}.proof li{grid-template-columns:1fr}.proof small{grid-column:1}dl{gap:22px}dd{font-size:24px}.evaluation h2{font-size:29px}}