body{font-family:-apple-system,Segoe UI,Roboto,sans-serif;max-width:720px;margin:40px auto;padding:0 20px;line-height:1.6;color:#1a1a1a}
h1{font-weight:800}h2{margin-top:1.6em}a{color:#0a84ff}.muted{color:#666;font-size:.9em}
nav{margin-bottom:24px}nav a{margin-right:16px}