.bottom-nav {
  flex-wrap: wrap;
}

.nav-button {
  flex: 1 1 140px;
  min-width: calc(50% - 4px);
}

@media (max-width: 600px) {
  #screen-root { padding-bottom: 148px; }
  .journey-hero { min-height: calc(100svh - 200px); }
}