nav {
  min-height: 0;
  overflow-y: auto;
}

.nav-section-heading {
  margin: 1.4rem .75rem .45rem;
  color: var(--muted);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.category-navigation {
  display: grid;
  gap: .15rem;
}

.category-dot { color: #52605d; }
.nav-active .category-dot { color: var(--accent); }

.nav-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 800px) {
  aside {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  nav {
    display: flex;
    order: 3;
    width: 100%;
    margin-top: .9rem;
    gap: .4rem;
    overflow-x: auto;
  }

  nav > button,
  .category-navigation button {
    width: auto;
    flex: 0 0 auto;
  }

  .nav-section-heading { display: none; }
  .category-navigation { display: flex; gap: .4rem; }
}