:root{color-scheme:dark;--bg:#091217;--card:#12212a;--line:#29424c;--text:#ecf3ed;--muted:#a6b8bc;--mint:#a6e3c2}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui}main{max-width:1200px;margin:auto;padding:32px 22px}header{display:flex;justify-content:space-between;align-items:center;gap:20px}h1{font-size:clamp(28px,5vw,46px);line-height:1.1;margin:12px 0}h2{font-size:20px;margin:0 0 16px}h3{font-size:14px;margin-top:24px;color:var(--mint)}p{color:var(--muted)}small{color:var(--muted)}header small{letter-spacing:.12em;color:var(--mint);font-size:12px}.grid{display:grid;grid-template-columns:1.3fr 1fr;gap:18px;margin:22px 0}.card{border:1px solid var(--line);background:var(--card);border-radius:20px;padding:24px}.wide{grid-column:1/-1}form{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:16px}input,select,textarea,button{font:inherit;border-radius:10px;padding:10px 14px;border:1px solid var(--line)}input,select,textarea{background:#09181f;color:var(--text);max-width:100%}input:not([type]),input[type=password]{flex:1;min-width:180px}input[type=number]{width:90px}textarea{width:100%;min-height:80px}button{background:var(--mint);color:#11251d;cursor:pointer;font-weight:600}button:disabled{opacity:.5;cursor:wait}.task{border-top:1px solid var(--line);padding:16px 0}.task:first-child{border-top:0}.task button{font-size:13px;margin:8px 8px 0 0}.task.done{opacity:.6}.task.done .title{text-decoration:line-through}.task small{display:block;overflow-wrap:anywhere}#timer{font-size:52px;font-variant-numeric:tabular-nums;color:var(--mint)}.pre{white-space:pre-wrap;overflow-wrap:anywhere}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}#status{font-size:13px;margin-bottom:10px}[hidden]{display:none!important}#toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#eaf5ef;color:#13251e;padding:12px 20px;border-radius:12px;z-index:10;max-width:90vw}details{margin-top:16px}summary{cursor:pointer}#proposal,#answer{margin:18px 0}#login{margin-top:20px;border-color:var(--mint)}@media(max-width:740px){.grid,.metrics{grid-template-columns:1fr}.wide{grid-column:auto}header{display:block}.card{padding:18px}#timer{font-size:44px}}