body{margin:0;font-family:Arial,sans-serif;color:#111827}header{background:#111827;color:#fff;position:sticky;top:0}.wrap{max-width:1100px;margin:auto;padding:20px}nav a{color:#fff;margin:0 10px;text-decoration:none}.hero{background:#E53935;color:#fff;padding:90px 20px;text-align:center}.btn,button{background:#FF6B00;color:#fff;padding:12px 22px;text-decoration:none;border:none;border-radius:4px}input,textarea{display:block;width:100%;padding:10px;margin:10px 0}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:15px}.card{border:1px solid #ddd;padding:30px;text-align:center}footer{background:#111827;color:#fff;text-align:center;padding:20px;margin-top:30px}