body{margin:0;font-family:Arial,Helvetica,sans-serif;color:#222;background:#fff;line-height:1.6}
.topnav{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background:#fff;border-bottom:1px solid #ddd;position:sticky;top:0;z-index:1000}
.topnav ul{list-style:none;display:flex;gap:20px;margin:0;padding:0}
.topnav a{text-decoration:none;color:#000;font-weight:bold}
.nav-logo{max-height:60px}
.hero{text-align:center;padding:80px 20px;background:#f5f5f5}
.btn{padding:12px 24px;background:#111;color:#fff;text-decoration:none;border-radius:6px}
section{padding:60px 20px;max-width:1000px;margin:auto}
footer{text-align:center;padding:20px;background:#222;color:#fff}