*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{color:#111;background:#fff;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.5;overflow-x:hidden}.shell{overflow-wrap:anywhere;max-width:40rem;margin:0 auto;padding:48px 16px}h1{margin:0 0 12px;font-size:clamp(1.75rem,6vw,2.5rem)}@media (prefers-color-scheme:dark){body{color:#eee;background:#111}}