@media (max-width: 992px) {
    .hero h1 { font-size: 40px; }
}

@media (max-width: 768px) {
    .nav { display: none; }
    .hero h1 { font-size: 32px; }
    .download-grid { flex-direction: column; }
    .wrapper { padding: 20px; }
}