body{margin:0;font-family:Segoe UI,Roboto,sans-serif;background-color:#f0f2f5;color:#333}a{text-decoration:none;color:#0d6efd}a:hover{text-decoration:underline}nav{background-color:#fff;border-bottom:1px solid #ddd;padding:1rem 2rem;display:flex;gap:1.5rem;box-shadow:0 2px 4px #0000000d}nav a{font-weight:500;font-size:1rem}h1,h2{color:#0d6efd}