:root{--bg:#fbfaf7;--fg:#1d1d1f;--muted:#5f6368;--accent:#2f5d50;--line:#e4e1da}
@media (prefers-color-scheme:dark){:root{--bg:#121413;--fg:#ecece8;--muted:#a3a6a3;--accent:#8fc4b2;--line:#2b2e2c}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
header,main,footer{max-width:42rem;margin:0 auto;padding:1rem 16px}
header{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line)}
header a.brand{font-weight:700;font-size:1.2rem;text-decoration:none;color:var(--fg)}
nav a{margin-left:1rem}
a{color:var(--accent)}
h1{font-size:1.9rem;line-height:1.2;margin:1.5rem 0 .5rem}
h2{font-size:1.2rem;margin:2rem 0 .3rem}
.muted{color:var(--muted);font-size:.9rem}
.badge{display:inline-block;margin-top:1rem;padding:.7rem 1.2rem;border:1px solid var(--fg);border-radius:10px;color:var(--fg);text-decoration:none;font-weight:600}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;margin-top:3rem}
ul{padding-left:1.2rem}