/* A complete outline, with the reading range traced along its heading levels. */
#aside-content #card-toc[data-article-toc] {
  padding: 16px 14px;
  border: var(--style-border);
  box-shadow: none;
}

#card-toc[data-article-toc] .item-headline {
  gap: 9px;
  margin: 0 0 14px 16px;
  padding: 0;
  color: var(--efu-fontcolor);
  font-size: 16px;
  font-weight: 600;
  line-height: 24px;
}

#card-toc[data-article-toc] .item-headline i {
  color: var(--efu-main);
  font-size: 15px;
}

#card-toc[data-article-toc] .toc-content {
  position: relative;
  max-height: min(62vh, 640px);
  padding: 0 4px 3px 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--efu-scrollbar) transparent;
}

#card-toc[data-article-toc] .toc,
#card-toc[data-article-toc] .toc-child {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

#card-toc[data-article-toc] .toc {
  position: relative;
  padding: 2px 0 5px 18px;
}

#card-toc[data-article-toc] .toc-item > .toc-child {
  display: flex;
  margin: 10px 0 0 8px;
  padding: 0;
}

#card-toc[data-article-toc] .toc-item {
  margin: 0;
  padding: 0;
  list-style: none;
}

#card-toc[data-article-toc] .toc-link {
  display: block;
  min-height: 0;
  margin: 0;
  padding: 0;
  border-radius: 3px;
  background: none;
  color: var(--efu-secondtext);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  overflow-wrap: anywhere;
  text-decoration: none;
  transition: color 150ms ease;
}

#card-toc[data-article-toc] .toc-child .toc-link {
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
}

#card-toc[data-article-toc] .toc-content .toc-link span {
  filter: none;
  opacity: 1;
  transition: none;
}

#card-toc[data-article-toc] .toc-link.is-visible {
  color: var(--efu-fontcolor);
}

#card-toc[data-article-toc] .toc-link[aria-current='location'] {
  color: var(--efu-fontcolor);
  font-weight: 650;
}

#card-toc[data-article-toc] .toc-link:focus-visible {
  outline: 2px solid var(--efu-main);
  outline-offset: 3px;
}

#card-toc[data-article-toc] .toc-link:active {
  color: var(--efu-main);
}

#card-toc[data-article-toc] .article-toc-rail {
  position: absolute;
  top: 0;
  left: 0;
  overflow: visible;
  pointer-events: none;
  color: var(--efu-main);
}

#card-toc[data-article-toc] .article-toc-track {
  stroke: var(--efu-secondtext);
  stroke-opacity: .24;
  stroke-width: 1;
}

#card-toc[data-article-toc] .article-toc-progress {
  stroke: currentColor;
  stroke-width: 1.5;
}

@media (hover: hover) {
  #card-toc[data-article-toc] .toc-link:hover {
    color: var(--efu-main);
    background: none;
  }
}

@media (max-width: 1200px) {
  #aside-content #card-toc[data-article-toc] {
    right: 60px;
    bottom: 20px;
    width: min(360px, calc(100vw - 80px));
    max-height: calc(100dvh - 100px);
    padding: 18px 16px;
    box-shadow: 0 12px 40px rgb(0 0 0 / 14%);
  }

  #card-toc[data-article-toc] .toc-content {
    max-height: min(62vh, calc(100dvh - 180px));
  }

  #card-toc[data-article-toc] .toc-link {
    padding-block: 3px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #aside-content #card-toc[data-article-toc],
  #card-toc[data-article-toc] .toc-link {
    transition: none;
  }
}

@media (prefers-contrast: more) {
  #card-toc[data-article-toc] .article-toc-track { stroke-opacity: .65; }
}