body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:#0d1117;color:#c9d1d9}nav{background:#161b22;padding:1rem;justify-content:center}nav,nav ul{display:flex}nav ul{gap:1rem;list-style:none;margin:0;padding:0}nav a{color:#58a6ff;text-decoration:none;font-weight:500}nav a:hover{text-decoration:underline}main{padding:2rem;max-width:800px;margin:0 auto}.hero{text-align:center;padding:4rem 2rem}h1{font-size:2rem;margin-bottom:1rem}p{line-height:1.6}