:root{--bg:#fff;--fg:#1a1a1a;--muted:#555;--line:#e3e3e3;--accent:#0b5cad;--todo:#fff3b0}
@media (prefers-color-scheme:dark){:root{--bg:#121212;--fg:#ececec;--muted:#a8a8a8;--line:#2e2e2e;--accent:#6db3f2;--todo:#5a4a00}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent)}
header,main,footer{max-width:46rem;margin:0 auto;padding:1rem 16px}
header{display:flex;flex-wrap:wrap;gap:.5rem 1.25rem;align-items:center;border-bottom:1px solid var(--line)}
header .brand{font-weight:700;text-decoration:none;color:var(--fg);margin-right:auto}
nav{display:flex;flex-wrap:wrap;gap:.25rem 1rem}
h1{font-size:2rem;line-height:1.2;margin:1.5rem 0 1rem}
h2{font-size:1.2rem;margin:2rem 0 .5rem}
.lead{font-size:1.2rem;color:var(--muted)}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;margin-top:3rem}
.todo{background:var(--todo);color:inherit;padding:0 .25em;border-radius:3px}
.draft{background:var(--todo);padding:.5rem 16px;text-align:center;font-size:.9rem}