.hero-copy h1 {
  font-size: clamp(42px, 4.3vw, 64px);
  letter-spacing: -.055em;
}

.hero-copy h1 span,
.hero-copy h1 em {
  display: block;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .hero-copy h1 {
    font-size: 36px;
  }

  .mobile-cta {
    transition: opacity .2s, transform .2s;
  }

  .mobile-cta.is-hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(120%);
  }
}