body{margin:0;font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:#1f2933;background:#f5f7fa}
main{max-width:720px;margin:0 auto;padding:40px 20px 60px}
h1{font-size:28px;margin:0 0 8px}
h2{font-size:18px;margin:28px 0 6px}
.lead{font-size:18px}
.muted{color:#6b7280;margin-top:0}
a{color:#2563eb}
code{background:#e5e7eb;padding:1px 5px;border-radius:4px}
footer{margin-top:32px;color:#6b7280;font-size:14px}