:root{--fg:#1b1f24;--muted:#5c6773;--bg:#fbfbf9;--line:#e3e3dd;--accent:#0f6d5c}
*{box-sizing:border-box}
body{margin:0;font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--fg);background:var(--bg)}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
header.site{border-bottom:1px solid var(--line);background:#fff}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-weight:700;color:var(--accent);text-decoration:none;font-size:20px}
nav a{margin-left:18px;color:var(--muted);text-decoration:none;font-size:14px}
nav a:hover{color:var(--accent)}
h1{font-size:30px;margin:38px 0 6px}
.lede{color:var(--muted);margin:0 0 32px}
h2{font-size:18px;margin:30px 0 8px}
ul{padding-left:20px}
li{margin:4px 0}
footer.site{margin-top:56px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
footer.site .wrap{padding:18px 20px}