.site-nav__mobile-menu {
  display: none;
}

.site-nav__mobile-summary {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.3125rem;
  border: 1px solid rgba(196, 197, 213, 0.7);
  border-radius: 4px;
  background: var(--surface-lowest);
  color: var(--primary);
  cursor: pointer;
  list-style: none;
}

.site-nav__mobile-summary::-webkit-details-marker {
  display: none;
}

.site-nav__mobile-summary span {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition:
    opacity 200ms ease,
    transform 200ms ease;
}

.site-nav__mobile-menu[open] .site-nav__mobile-summary span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-nav__mobile-menu[open] .site-nav__mobile-summary span:nth-child(2) {
  opacity: 0;
}

.site-nav__mobile-menu[open] .site-nav__mobile-summary span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav__mobile-panel {
  position: fixed;
  top: 5rem;
  left: 1rem;
  right: 1rem;
  display: grid;
  gap: 0.75rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem;
  border: 1px solid rgba(196, 197, 213, 0.7);
  border-radius: 4px;
  background: var(--surface-lowest);
  box-shadow: 0 12px 24px rgba(25, 28, 30, 0.12);
}

.site-nav__mobile-link {
  display: block;
  padding: 0.75rem 0.5rem;
  color: var(--secondary);
  font-size: 1rem;
  line-height: 1.5rem;
  font-weight: 600;
}

.site-nav__mobile-link:hover {
  color: var(--primary);
}

.site-nav__mobile-cta {
  width: 100%;
  margin-top: 0.25rem;
}

@media (max-width: 56.25rem) {
  .site-nav__links,
  .site-nav__cta {
    display: none;
  }

  .site-nav__mobile-menu {
    display: block;
  }

  .logo-grid,
  .logo-grid--two,
  .card-grid,
  .portfolio-gallery__inner,
  .portfolio-card,
  .process-grid,
  .split,
  .about-story__grid,
  .founder-profile,
  .about-global__grid,
  .site-footer__inner,
  .site-footer__columns {
    grid-template-columns: 1fr;
  }

  .site-footer__columns {
    grid-column-start: auto;
  }

  .process-card__arrow {
    display: none;
  }

  .founder-profile,
  .about-global__grid,
  .split {
    gap: 3rem;
  }

  .about-story__body {
    padding-left: 0;
    padding-top: 2rem;
    border-left: 0;
    border-top: 1px solid rgba(117, 118, 132, 0.28);
  }

  .portfolio-card {
    padding: 2rem;
  }

  .portfolio-card__visual {
    order: 1;
  }

  .portfolio-card__copy {
    order: 2;
  }

  .portfolio-card--reverse .portfolio-card__copy {
    padding-left: 0;
  }
}

@media (max-width: 40rem) {
  .site-nav__inner,
  .container,
  .hero__content {
    width: min(100% - 2rem, var(--max-width));
  }

  .site-nav__inner {
    height: 4.5rem;
  }

  .site-nav__mobile-panel {
    top: 4.5rem;
  }

  .button--primary {
    padding-inline: 1.125rem;
  }

  .hero h1,
  .page-title {
    font-size: 2.5rem;
    line-height: 3rem;
  }

  .hero {
    min-height: 42.5rem;
  }

  .section,
  .about-landing-hero,
  .about-story,
  .about-founder,
  .about-global,
  .portfolio-hero,
  .legal-page {
    padding: 5rem 0;
  }

  .breadcrumb {
    padding: 1.5rem 0 0;
  }

  .portfolio-gallery {
    padding: 3rem 0;
  }

  .portfolio-card {
    padding: 1.5rem;
  }

  .portfolio-card__title {
    font-size: 1.5rem;
    line-height: 2rem;
  }

  .portfolio-hero .page-title {
    font-size: 3.5rem;
    line-height: 4rem;
  }

  .portfolio-card__visual {
    min-height: 14rem;
  }

  .button-row {
    flex-direction: column;
    align-items: stretch;
  }

}