body{font-family:-apple-system,Segoe UI,Roboto,sans-serif;max-width:760px;margin:40px auto;padding:0 20px;color:#1a202c;line-height:1.65}
h1{color:#1d4ed8}h2{margin-top:1.6em}footer{margin-top:3em;color:#64748b;font-size:.9em;border-top:1px solid #e2e8f0;padding-top:1em}