body { margin: 0; background: #05070a; color: #e2e8f0; font: 16px/1.6 system-ui, "Segoe UI", Roboto, sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 20px; }
h1 { letter-spacing: 0.04em; }
h2 { font-size: 18px; margin-top: 32px; }
a { color: #2dd4bf; }
.muted { color: #64748b; }