body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;max-width:40rem;margin:3rem auto;padding:0 1rem;line-height:1.55;color:#1a1a1a;background:#fff}
h1{font-size:1.6rem}h2{font-size:1.15rem;margin-top:2rem}
a{color:#0b57d0}footer{margin-top:3rem;font-size:.9rem;color:#555}
@media (prefers-color-scheme:dark){body{color:#e6e6e6;background:#111}a{color:#8ab4f8}footer{color:#aaa}}