@media (max-width: 1024px) {
  .menu-toggle {
    display: block;
  }

  .primary-navigation {
    position: fixed;
    top: 76px;
    right: 0;
    bottom: 0;
    width: min(420px, 90vw);
    padding: 28px;
    align-items: stretch;
    flex-direction: column;
    background: var(--color-white);
    box-shadow: -18px 0 44px rgba(3, 31, 61, 0.18);
    transform: translateX(105%);
    transition: transform 280ms ease;
    overflow-y: auto;
  }

  .primary-navigation.is-open {
    transform: translateX(0);
  }

  .primary-menu {
    align-items: stretch;
    flex-direction: column;
    gap: 0;
  }

  .primary-menu a {
    min-height: auto;
    padding: 14px 4px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-heading);
  }

  .primary-menu > li > a::after {
    display: none;
  }

  .primary-menu .sub-menu {
    position: static;
    min-width: 0;
    padding: 0 0 8px 14px;
    border: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .button--header {
    width: 100%;
  }

  .phase-one-hero__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .foundation-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .section,
  .phase-one-hero {
    padding: 64px 0;
  }

  .foundation-grid,
  .site-footer__grid {
    grid-template-columns: 1fr;
  }

  .site-footer__grid {
    gap: 30px;
    padding-block: 48px;
  }

  .site-footer__bottom-grid { display: grid; grid-template-columns: 1fr; }
  .site-footer__back-to-top { justify-self: start; }

  .button-row,
  .button-row .button {
    width: 100%;
  }

  .setup-card,
  .content-card {
    padding: 24px;
  }
}