body { font-family: system-ui, -apple-system, "Segoe UI", sans-serif; max-width: 720px; margin: 40px auto; padding: 0 20px; line-height: 1.6; color: #222; }
h1, h2 { color: rgb(14, 118, 110); }
a { color: rgb(14, 118, 110); }
footer { margin-top: 48px; font-size: 0.9em; color: #666; }