:root{--ink:#14212b;--muted:#5b6b78;--brand:#0f9bb8;--bg:#fff;--soft:#f1f7f8}
@media (prefers-color-scheme:dark){:root{--ink:#e8eef2;--muted:#9fb0bc;--bg:#0f171d;--soft:#18242c}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:46rem;margin:0 auto;padding:24px 16px 64px}h1{font-size:1.7rem;line-height:1.2;margin:.2em 0}h2{font-size:1.15rem;margin:1.8em 0 .4em}
a{color:var(--brand)}.muted{color:var(--muted);font-size:.9rem}.box{background:var(--soft);border-radius:14px;padding:12px 14px;margin:12px 0}
nav{display:flex;gap:14px;flex-wrap:wrap;font-weight:700;margin-bottom:8px}table{border-collapse:collapse;width:100%;font-size:.92rem}td,th{border-bottom:1px solid rgba(127,127,127,.25);padding:6px 4px;text-align:left;vertical-align:top}
.todo{background:#fff3cd;color:#7a5600;border-radius:6px;padding:0 4px}