:root{color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,sans-serif;line-height:1.5;color:#1a1a1a}.site-header{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;padding:1rem 1.5rem;border-bottom:1px solid #ddd}.site-brand{font-weight:700}.site-header nav ul{display:flex;flex-wrap:wrap;gap:1rem;list-style:none;margin:0;padding:0}.site-header a{color:inherit;text-decoration:none}.site-header a[aria-current=page]{font-weight:700;text-decoration:underline}.site-main{padding:1.5rem;max-width:60rem;margin:0 auto}.site-footer{padding:1rem 1.5rem;border-top:1px solid #ddd;color:#555}