.pro1c-toc {
  display: block;
  margin-top: 20px;
  margin-bottom: 20px;
  padding: 20px;
  font-size: 13px;
  line-height: 1.4;
  color: #6a777c;
  background-color: #f9f9f9;
  border: 1px solid #aaaaaa;
}

.pro1c-toc .pro1c-toc__button {
  font-family: inherit;
  font-style: inherit;
  font-size: 18px;
  color: inherit;
  background-color: transparent;
  border-color: transparent;
}

.pro1c-toc .pro1c-toc__button:hover {
  color: #ff2549;
}

.pro1c-toc .pro1c-toc__icon {
  color: #6a777c;
  padding-right: 10px;
}

.pro1c-toc .pro1c-toc__navigation {
  overflow: hidden;
  transition: max-height 0.15s ease-out;
}

.pro1c-toc .pro1c-toc__list {
  margin-bottom: 0;
  padding-left: 1em;
  counter-reset: section;
  list-style: none;
}

.pro1c-toc .pro1c-toc__list {
  padding-top: 1em;
}

.pro1c-toc .pro1c-toc__item {
  counter-increment: section;
}

.pro1c-toc .pro1c-toc__item:not(:last-child) {
  margin-bottom: 1em;
}

.pro1c-toc .pro1c-toc__label {
  display: flex;
  gap: 7px;
}

.pro1c-toc .pro1c-toc__label::before {
  content: counters(section, ".") ". ";
  flex-shrink: 0;
  font-weight: 700;
  color: #6a777c;
}