*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.5}#site-header nav{border-bottom:1px solid #ddd;gap:1rem;padding:.75rem 1rem;display:flex}#site-header a{color:inherit;text-decoration:none}#app{padding:1rem}