.menu-toggle,
.menu-button {
  display: none;
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
    justify-items: stretch;
    align-items: center;
    gap: 16px;
    padding: 14px 6%;
  }

  .brand {
    width: min(300px, 72vw);
  }

  .header-cta {
    display: none;
  }

  .menu-toggle {
    position: absolute;
    opacity: 0;
    pointer-events: none;
  }

  .menu-button {
    width: 46px;
    height: 46px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    justify-self: end;
    cursor: pointer;
  }

  .menu-button span {
    width: 30px;
    height: 4px;
    border-radius: 999px;
    background: var(--ink);
    transition: transform 180ms ease, opacity 180ms ease;
  }

  .main-nav {
    grid-column: 1 / -1;
    display: none;
    width: 100%;
    margin-top: 10px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0;
    border: 1px solid #d8dce1;
    border-radius: 6px;
    background: #fff;
    box-shadow: 0 14px 28px rgba(30, 33, 37, 0.16);
  }

  .menu-toggle:checked ~ .main-nav {
    display: flex;
  }

  .menu-toggle:checked + .menu-button span:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
  }

  .menu-toggle:checked + .menu-button span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle:checked + .menu-button span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
  }

  .main-nav > a,
  .nav-dropdown > .dropdown-toggle {
    width: 100%;
    display: block;
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid #e3e6ea;
  }

  .main-nav > a:last-child {
    border-bottom: 0;
  }

  .nav-dropdown {
    width: 100%;
    display: block;
  }

  .dropdown-menu {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero {
    min-height: 390px;
    align-items: center;
    padding: 48px 6% 30px;
  }
}