body{font-family:Arial,sans-serif;margin:0;line-height:1.6}
header{display:flex;justify-content:space-between;padding:20px;background:#fff;border-bottom:1px solid #ddd}
nav a{margin-left:15px}
.hero{padding:100px 20px;text-align:center;background:#f5f1eb}
section{padding:50px 20px;max-width:1000px;margin:auto}
.wa{position:fixed;right:20px;bottom:20px;padding:12px 16px;background:#25D366;color:white;text-decoration:none;border-radius:30px}