:root{--bg:#fbfaf7;--fg:#1c1b19;--muted:#5d5a54;--line:#dcd8cf;--accent:#1f4e79;--note:#fff6dd}
@media (prefers-color-scheme:dark){:root{--bg:#161614;--fg:#eeece6;--muted:#a8a49a;--line:#3a3833;--accent:#8fb8e0;--note:#2d2a1c}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:18px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif}
header,main,footer{max-width:46rem;margin:0 auto;padding:1rem 1.25rem}
header{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;align-items:baseline;border-bottom:1px solid var(--line)}
header strong{font-size:1.1rem}
nav a{margin-right:1rem;color:var(--accent)}
h1{font-size:2rem;line-height:1.2;margin:1.5rem 0 .5rem}
h2{font-size:1.3rem;margin:2rem 0 .5rem}
a{color:var(--accent)}
.note{background:var(--note);border-left:4px solid var(--accent);padding:.75rem 1rem;margin:1.25rem 0}
table{border-collapse:collapse;width:100%}
th,td{border-bottom:1px solid var(--line);padding:.5rem;text-align:left;vertical-align:top}
footer{color:var(--muted);font-size:.9rem;border-top:1px solid var(--line);margin-top:3rem}