body { font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; color: #1f2328; max-width: 44rem; margin: 3rem auto; padding: 0 1.25rem; }
header, footer { display: flex; gap: 1.25rem; align-items: baseline; flex-wrap: wrap; }
header strong { font-size: 1.25rem; margin-right: auto; }
footer { margin-top: 3rem; border-top: 1px solid #d0d7de; padding-top: 1rem; font-size: 0.9rem; color: #57606a; }
a { color: #0550ae; }
h1 { font-size: 1.75rem; line-height: 1.25; }