body { font-family: system-ui, sans-serif; background: #0f172a; color: #e2e8f0; margin: 0; }
main { max-width: 42rem; margin: 3rem auto; padding: 0 1rem; line-height: 1.6; }
h1 { color: #38bdf8; }
code, pre { background: #1e293b; padding: 0.1rem 0.35rem; border-radius: 4px; }
pre { padding: 1rem; }
button { background: #38bdf8; color: #0f172a; border: 0; padding: 0.6rem 1rem; border-radius: 6px; cursor: pointer; }