.mobile-nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,.05);
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.mobile-nav-toggle:hover,
.mobile-nav-toggle:focus-visible {
  border-color: rgba(255,255,255,.35);
  background: rgba(255,255,255,.09);
}

.mobile-nav-icon,
.mobile-nav-icon::before,
.mobile-nav-icon::after {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform .18s ease, opacity .18s ease;
}

.mobile-nav-icon {
  position: relative;
}

.mobile-nav-icon::before,
.mobile-nav-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.mobile-nav-icon::before { top: -7px; }
.mobile-nav-icon::after { top: 7px; }

.mobile-nav-toggle[aria-expanded="true"] .mobile-nav-icon {
  background: transparent;
}

.mobile-nav-toggle[aria-expanded="true"] .mobile-nav-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] .mobile-nav-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

@media (max-width: 640px) {
  .site-header {
    position: relative;
    flex-wrap: wrap;
    gap: .75rem;
    padding-block: .7rem;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .site-header > .primary-navigation {
    display: none;
    width: 100%;
    padding: .4rem 0 1rem;
    flex-direction: column;
    align-items: stretch;
    gap: .35rem;
  }

  .site-header > .primary-navigation[data-open="true"] {
    display: flex;
  }

  .site-header > .primary-navigation a {
    display: block;
    min-height: 46px;
    padding: .8rem 1rem;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255,255,255,.035);
    color: var(--text);
  }

  .site-header > .primary-navigation a:hover,
  .site-header > .primary-navigation a:focus-visible {
    border-color: rgba(255,255,255,.35);
    background: rgba(255,255,255,.08);
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-nav-icon,
  .mobile-nav-icon::before,
  .mobile-nav-icon::after {
    transition: none;
  }
}