#toc-summary {
  margin-top: 1rem;
  font-size: 1.5rem;
  color: #000000;
  border-radius: 0.5rem;
  background-color: #d1d5db;
  font-size: 1.2rem;
  display: flex;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  padding-left: 1rem;
  padding-right: 1rem;
  color: #000000;
  font-weight: 700;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

#toc-list {
  padding-bottom: 1rem;
  margin-top: 0.5rem;
  color: #000000;
  margin-bottom: 1rem;
  margin-left: 1rem;
  font-size: 1.2rem;
  line-height: 1.5rem;
}

#toc-sublist {
  margin-bottom: 0.7rem;
  margin-top: 0.5rem;
  margin-left: 0.5rem;
  font-size: 1.1rem;
  line-height: 1.15rem;
}

details[open] summary ~ * {
  animation: sweep 0.5s ease-in-out;
}

@keyframes sweep {
  0% {
    opacity: 0;
    transform: translateX(-10px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}