.hero h1 {
    max-width: 720px;
    font-size: clamp(42px, 5.2vw, 74px);
    line-height: .96;
}

@media (max-width: 620px) {
    .hero h1 {
        font-size: clamp(38px, 11.5vw, 52px);
        line-height: .98;
    }
}