:root{--bg:#efe9ff;--card:#fff;--ink:#140f2e;--muted:#5a5378;--edge:#140f2e;--warn:#ffd23f;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#130f29;--card:#1f1a3d;--ink:#f4f0ff;--muted:#b2aad6;--edge:#f4f0ff;--warn:#5a4a00;color-scheme:dark}}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif}
main{max-width:720px;margin:0 auto;padding-inline:16px;padding-block:28px 60px}
h1{font-size:1.8rem;line-height:1.2;margin:0 0 6px}
h2{font-size:1.15rem;margin:28px 0 6px}
p,li{max-width:68ch}
a{color:inherit}
.todo{background:var(--warn);padding:0 4px;border-radius:4px;font-weight:700}
.back{display:inline-block;margin-bottom:18px;font-weight:700}
.upd{color:var(--muted)}