body { font: 16px/1.6 -apple-system, system-ui, sans-serif; max-width: 640px; margin: 0 auto; padding: 48px 20px; color: #222; background: #fafaf8; }
h1 { font-size: 1.6rem; margin-bottom: 0.25rem; }
.muted { color: #666; font-size: 0.9rem; }
a { color: #2a5db0; }