body { font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; line-height: 1.6; max-width: 40rem; margin: 2rem auto; padding: 0 1.25rem; color: #10313d; background: #f4fbfb; }
h1 { font-size: 1.7rem; letter-spacing: -0.02em; margin-bottom: .2rem; }
h2 { font-size: 1.1rem; margin-top: 1.75rem; }
p, li { color: #2c4f5a; }
.meta { color: #5d7c86; font-size: .9rem; }
a { color: #0f7f86; }
.hero { font-size: 3rem; line-height: 1; }
nav { margin-top: 2.5rem; font-size: .9rem; }