:root {
  --toc-title-size: 3rem;
  --toc-link-size-mobile: 0.813rem;
  --toc-link-child-size-mobile: 0.75rem;
  --toc-link-size: 1rem;
  --toc-link-child-size: 0.938rem;
  --toc-link-child-padding-left: 2.25rem;
  --toc-font-weight-active: 700;
  --toc-margin-mobile: 0 auto 30px;
  --toc-margin-desktop: 0 auto 30px;
  --toc-padding-link: 0.5rem 1.5rem;
  --toc-padding-list: 1rem 0 2rem;
  --toc-radius: 5px;
  --toc-radius-mobile: 5px;
  --toc-shadow: none;
  --toc-transition: 0.2s ease-in-out;
  --toc-max-height-mobile: calc(80vh - 62px);
  --toc-width-fixed: calc(100% - 40px);
  --toc-radius-fixed: 0 0 5px 5px;
  --toc-desktop-top-offset: 150px;
}
.toc-sentinel {
  height: 1px;
  width: 100%;
  opacity: 0;
  pointer-events: none;
}

.toc {
  position: relative;
  background-color: var(--light-gray);
  width: 100%;
  display: flex;
  flex-flow: row wrap;
  justify-content: flex-start;
  align-items: center;
  padding: 0;
  margin: 0 auto 32px;
  z-index: 1000;
  border-radius: var(--toc-radius-mobile);
  transition: top var(--toc-transition);
}
.toc__toggle {
  display: inline-block;
  margin: 8px;
}

ul.toc__list {
  display: none;
  width: 100%;
  list-style: none;
  background-color: var(--light-gray);
  margin: 0 auto;
  border-radius: var(--toc-radius-mobile);
  padding-left: 0;
}
ul.toc__list--open {
  display: block;
}
ul.toc__list li.toc__item {
  display: flex;
  position: relative;
  margin-left: 0;
  transition: background-color var(--toc-transition);
  color: var(--white);
}
ul.toc__list li.toc__title {
  display: none;
  position: relative;
  margin-left: 0;  
  font-size: 2rem;
  font-weight: 700;
  color: #222222;
  padding: var(--toc-padding-link);
}
ul.toc__list li.toc__item a.toc__link {
  width: 100%;
  font-size: var(--toc-link-size-mobile);
  font-weight: 500;
  line-height: 1.6;
  color: var(--darken);
  padding: var(--toc-padding-link);
  text-decoration: none;
  border-top: 1px solid #dfddd9;
  transition: color var(--toc-transition);
}
ul.toc__list li.toc__item a.toc__link--child {
  padding-top: 0.375rem;
  padding-bottom: 0.375rem;
  padding-left: var(--toc-link-child-padding-left);
  font-size: var(--toc-link-child-size-mobile);
}
ul.toc__list li.toc__item:hover a.toc__link,
ul.toc__list li.toc__item a.toc__link:hover {
  color: var(--white);
  background-color: var(--light-blue);
}

ul.toc__list li.toc__item--active a.toc__link,
ul.toc__list li.toc__item a.toc__link--active {
  color: var(--white);
  background-color: var(--blue);
}

@media (min-width: 1024px) {
  .toc {
    border-radius: var(--toc-radius);
  }
  .toc__toggle {
    display: none;
  }
  ul.toc__list {
    display: block;
    padding: var(--toc-padding-list);
    overflow-y: visible;
    max-height: none;
    border-radius: var(--toc-radius);
  }  
  ul.toc__list li.toc__title {
    display: block; 
    color: var(--blue);
  }
  .toc--sticky {
    position: -webkit-sticky;
    position: sticky;
    top: var(--toc-desktop-top-offset);
    margin: 0 0 auto;
    max-height: max-height: calc(100vh - var(--toc-desktop-top-offset));
    overflow-y: auto;
  }
}

@media (min-width: 1280px) {
  ul.toc__list li.toc__title {
    font-size: var(--toc-title-size);
  }
  ul.toc__list li.toc__item a.toc__link {
    font-size: var(--toc-link-size);
  }
  ul.toc__list li.toc__item a.toc__link--child {
    font-size: var(--toc-link-child-size);
  }
}

@media (max-width: 1023px) {
  .toc--fixed {
    position: fixed;
    top: 0;
    width: var(--toc-width-fixed);
    border-radius: var(--toc-radius-fixed);
  }
  ul.toc__list {
    overflow-y: auto;
    max-height: var(--toc-max-height-mobile);
    margin-bottom: 0;
  }
}