body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6;color:#111;max-width:920px;margin:2rem auto;padding:0 1rem}h1,h2,h3{line-height:1.25}h1{margin-top:0}ul{padding-left:1.2rem}.muted{color:#555}.sep{height:1px;background:#e5e5e5;margin:2rem 0}a{color:#0b5ed7;text-decoration:none}a:hover{text-decoration:underline}