:root{--fg:#1a1a1a;--bg:#fff;--link:#0b4f8a;--focus:#b45309}*{box-sizing:border-box}body{color:var(--fg);background:var(--bg);margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.5}a{color:var(--link)}:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.skip-link{background:var(--bg);color:var(--link);padding:.5rem 1rem;position:absolute;top:-3rem;left:1rem}.skip-link:focus{top:1rem}header,main{max-width:60rem;margin:0 auto;padding:1rem}