:root{--bg:#fff;--fg:#1c1c1e;--muted:#5f6368;--accent:#0b57d0;--line:#e3e3e6}
@media (prefers-color-scheme:dark){:root{--bg:#121214;--fg:#ececee;--muted:#a0a3a8;--accent:#8ab4f8;--line:#2c2c30}}
*{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}
main{max-width:42rem;margin:0 auto;padding:2rem 1rem 3rem}
h1{font-size:1.8rem;line-height:1.25;margin:0 0 .5rem}
h2{font-size:1.2rem;margin:2rem 0 .4rem}
a{color:var(--accent)}
.meta{color:var(--muted);font-size:.9rem}
footer{border-top:1px solid var(--line);margin-top:3rem;padding-top:1rem;color:var(--muted);font-size:.9rem}
nav a{margin-right:1rem}