body{font-family:Arial,sans-serif;margin:0;color:#222}header{background:#0b5ed7;color:#fff;padding:18px}nav a{color:#fff;margin-right:16px;text-decoration:none}section{max-width:1000px;margin:auto;padding:40px 20px}.hero{background:#eef5ff;text-align:center;padding:70px 20px}.btn{background:#0b5ed7;color:#fff;padding:12px 18px;border-radius:6px;text-decoration:none}footer{background:#111;color:#fff;text-align:center;padding:20px}