:root{--brand: #111;--muted: #666}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Helvetica Neue,Arial,Noto Sans;color:#222}img{max-width:100%;height:auto;display:block}a{color:var(--brand)}