body{margin:0;font-family:Arial,sans-serif;background:#f7f7f7}.container{max-width:900px;margin:0 auto;text-align:center;padding:40px 20px}.subtitle{color:#666;margin-bottom:30px}.grid{display:grid;grid-template-columns:1fr;gap:20px}.card{background:#fff;padding:20px;border-radius:12px;box-shadow:0 4px 10px rgba(0,0,0,0.05)}.btn{display:inline-block;margin-top:10px;padding:10px 20px;background:#6A5ACD;color:#fff;text-decoration:none;border-radius:8px}.btn:hover{opacity:0.8}