body { font-family: system-ui, -apple-system, sans-serif; max-width: 720px; margin: 3rem auto; padding: 0 1.25rem;
       line-height: 1.6; color: #1b1f24; }
h1 { margin-bottom: .25rem; } h2 { margin-top: 2rem; }
.tag { color: #57606a; margin-top: 0; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid #d0d7de; color: #57606a; font-size: .9rem; }
a { color: #0969da; }