:root {
  --content-max-width: 900px;
  --content-side-padding: 48px;
  --page-toc-width: 260px;
  --page-toc-gap: 34px;
}

.content {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding-left: var(--content-side-padding);
  padding-right: var(--content-side-padding);
}

.content main {
  color: var(--fg);
  font-size: 1.18rem;
  line-height: 1.86;
}

.content p {
  margin: 1.08em 0;
}

.content h1,
.content h2,
.content h3 {
  line-height: 1.35;
  letter-spacing: 0;
}

.content h1 {
  margin-top: 1.35rem;
  margin-bottom: 1.55rem;
  font-size: 2.38rem;
}

.content h2 {
  margin-top: 3.2rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--table-border-color);
  font-size: 1.82rem;
}

.content h3 {
  margin-top: 2.25rem;
  font-size: 1.42rem;
}

.content ul,
.content ol {
  margin-top: 0.7rem;
  margin-bottom: 1.1rem;
}

.content li {
  margin: 0.28rem 0;
}

.content blockquote {
  margin: 1.2rem 0;
  padding: 0.7rem 1rem;
  border-left: 4px solid var(--links);
  background: var(--quote-bg);
}

.content table {
  display: table;
  width: 100%;
  margin: 1.2rem 0 1.6rem;
  font-size: 1.04rem;
}

.content th,
.content td {
  padding: 0.55rem 0.7rem;
  vertical-align: top;
}

.content pre {
  margin: 1.1rem 0 1.45rem;
  padding: 1rem 1.1rem;
  border-radius: 6px;
  font-size: 1rem;
  line-height: 1.6;
}

.content code {
  border-radius: 4px;
}

.content .mermaid {
  display: flex;
  justify-content: center;
  width: 100%;
  margin: 1.4rem auto 1.9rem;
  overflow-x: auto;
}

.content .mermaid svg {
  width: min(100%, 860px);
  min-width: min(720px, 100%);
  height: auto;
}

.sidebar {
  font-size: 1.02rem;
}

.sidebar .chapter li {
  line-height: 1.45;
  margin: 0.16rem 0;
}

.sidebar .chapter li a {
  padding-top: 0.18rem;
  padding-bottom: 0.18rem;
}

.sidebar .chapter li.chapter-item.expanded > a {
  font-weight: 600;
}

.sidebar .on-this-page {
  display: none;
}

.sidebar-resize-handle {
  opacity: 0.45;
}

.page-toc {
  position: fixed;
  top: 5.1rem;
  width: var(--page-toc-width);
  max-height: calc(100vh - 7rem);
  overflow: auto;
  padding-left: 1.1rem;
  border-left: 1px solid var(--table-border-color);
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--fg);
}

.page-toc-title {
  margin-bottom: 0.65rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--icons);
}

.page-toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-toc li {
  margin: 0.38rem 0;
}

.page-toc a {
  display: block;
  color: var(--icons);
  text-decoration: none;
}

.page-toc a:hover,
.page-toc a.active {
  color: var(--links);
}

.page-toc a.active {
  font-weight: 600;
}

.page-toc-h3 {
  padding-left: 0.85rem;
}

@media (min-width: 1280px) {
  .content {
    max-width: calc(var(--content-max-width) + var(--page-toc-width) + var(--page-toc-gap));
    padding-right: calc(var(--content-side-padding) + var(--page-toc-width) + var(--page-toc-gap));
  }
}

@media (max-width: 1279px) {
  :root {
    --content-side-padding: 28px;
  }

  .page-toc {
    display: none;
  }
}

@media (max-width: 640px) {
  :root {
    --content-side-padding: 18px;
  }

  .content main {
    font-size: 1.08rem;
    line-height: 1.78;
  }

  .content h1 {
    font-size: 1.9rem;
  }

  .content h2 {
    font-size: 1.55rem;
  }

  .content table {
    display: block;
    overflow-x: auto;
  }
}