.toc-drawer .toc-part {
  border: 1px solid rgba(75, 146, 47, 0.24);
  border-radius: 14px;
  background: #f3f0e8;
  overflow: hidden;
}

.toc-drawer .toc-part > summary {
  min-height: 44px;
  padding: 0.65rem 0.9rem;
  color: var(--mb-green-dark);
  background: #e3ecd9;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
}

.toc-drawer .toc-part > summary::after,
.toc-drawer[open] .toc-part > summary::after {
  content: "";
  width: 8px;
  height: 8px;
  margin-left: 1rem;
  padding: 0;
  border-top: 2px solid var(--mb-green-readable);
  border-right: 2px solid var(--mb-green-readable);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.toc-drawer[open] .toc-part[open] > summary::after {
  transform: rotate(135deg);
}

.toc-drawer .toc-part > ul {
  padding: 0.65rem !important;
  gap: 0.4rem;
  border-top: 1px solid rgba(75, 146, 47, 0.18);
}

.toc-drawer .toc-part > ul a {
  padding: 0.55rem 0.75rem;
  background: #fffdf8;
  font-size: 0.86rem;
}

.toc-drawer nav .toc-part-two {
  border: 1px solid #4b922f;
  color: #fffdf8;
  background: linear-gradient(135deg, #535353, #434e3e);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.toc-drawer nav .toc-part-two:hover,
.toc-drawer nav .toc-part-two:focus-visible {
  color: #fffdf8;
  background: linear-gradient(135deg, #397538, #65b33a);
}