*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:#222;background:#fff}
header{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;border-bottom:1px solid #e5e5e5}
nav a{margin:0 10px;text-decoration:none;color:#444;font-weight:600}
.hero{padding:40px;text-align:center}
.hero img{max-width:100%;height:auto;border-radius:14px;margin:20px 0}
.btn{display:inline-block;margin:8px;padding:12px 20px;background:#6b3fa0;color:#fff;border-radius:8px;text-decoration:none;font-weight:700}
.section{padding:40px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.card{border:1px solid #e5e5e5;border-radius:12px;padding:16px;text-align:center}
footer{padding:24px;border-top:1px solid #e5e5e5;text-align:center}