/* 文档书：文章树、正文和本篇目录三栏分别承担导航、阅读和定位。 */
:root {
  --bg: #fff;
  --surface: #fff;
  --text: #243446;
  --muted: #718093;
  --line: #e1e7ed;
  --accent: #386cd5;
  --soft: #eef3fd;
  --code: #f4f6f9;
  --scrollbar: #c1cbd7;
  --radius: 7px;
  --docs-rail: #f8f9fb;
}
:root.dark {
  --bg: #171b22;
  --surface: #1c222b;
  --text: #e1e6ef;
  --muted: #9caabc;
  --line: #323c49;
  --accent: #91b6ff;
  --soft: #26344c;
  --code: #212b38;
  --scrollbar: #4c5d73;
  --docs-rail: #191f28;
}
.theme-gitbook .site-header {
  background: var(--surface);
}
.theme-gitbook .header-inner {
  max-width: 1560px;
  min-height: 70px;
  padding: 14px 30px;
}
.theme-gitbook .brand {
  font-size: 21px;
  font-weight: 650;
}
.theme-gitbook .theme-toggle,
.theme-gitbook .search-toggle {
  border-radius: 7px;
  border-color: transparent;
}
.theme-gitbook .theme-toggle:hover,
.theme-gitbook .search-toggle:hover {
  background: var(--soft);
}
.gitbook-workspace {
  max-width: 1500px;
  width: calc(100% - 48px);
  padding-top: 0;
  padding-bottom: 0;
}
.docs-workspace {
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr) 214px;
  gap: 36px;
  min-height: calc(100vh - 165px);
}
/* 关闭首页文章后同时隐藏文章导航，并收回左侧栏占用的空间。 */
.docs-workspace.docs-without-index {
  grid-template-columns: minmax(0, 1fr) 214px;
}
.theme-archive .docs-workspace {
  display: block;
  max-width: 860px;
  min-height: 0;
  margin: auto;
}
.theme-gitbook .breadcrumbs {
  margin: 22px 0 18px;
}
.docs-content {
  padding: 34px 0 52px;
  min-width: 0;
}
.docs-workspace > .reading-index {
  padding: 32px 20px 36px 2px;
  border-right: 1px solid var(--line);
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--docs-rail));
}
.docs-workspace > .home-rail,
.docs-workspace > .article-rail {
  border-left: 1px solid var(--line);
  padding: 36px 0 28px 24px;
  gap: 30px;
}
.docs-workspace .home-sidebar {
  font-size: 12px;
}
.docs-workspace .category-list a {
  font-size: 12px;
  padding: 6px 0;
}
.docs-workspace .sidebar-section h2 {
  font-size: 11px;
  letter-spacing: 0;
  color: var(--muted);
}
.docs-workspace .sidebar-section + .sidebar-section {
  margin-top: 24px;
  padding-top: 20px;
}
.docs-welcome {
  padding: 0 0 28px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 26px;
}
.docs-welcome h1 {
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -0.04em;
}
.docs-welcome .intro-kicker {
  font-size: 11px;
  letter-spacing: 0.08em;
}
.docs-welcome .intro-description {
  font-size: 14px;
}
.docs-summary {
  display: flex;
  gap: 10px 20px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 11px;
  margin-top: 20px;
}
.docs-summary > span::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--accent);
  display: inline-block;
  margin-right: 7px;
  border-radius: 50%;
}
.gitbook-workspace .theme-list-title {
  color: var(--text);
  font-size: 13px;
  letter-spacing: 0;
}
.gitbook-workspace .theme-list-heading {
  margin-bottom: 18px;
}
.gitbook-entries {
  display: grid;
  gap: 14px;
}
.gitbook-workspace .docs-chapter {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 22px;
  gap: 16px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 22px;
  background: var(--surface);
}
.docs-chapter:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 18px rgba(30, 71, 140, 0.045);
}
.chapter-marker {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 34px;
  color: var(--accent);
}
.docs-chapter h2 {
  font-size: 20px;
  letter-spacing: 0;
  margin: 0 0 8px;
}
.docs-chapter .card-summary {
  font-size: 13px;
  -webkit-line-clamp: 2;
  margin-bottom: 13px;
  line-height: 1.9;
}
.chapter-arrow {
  color: var(--muted);
  font-size: 21px;
  align-self: center;
}
.docs-chapter .card-meta {
  font-size: 11px;
}
.docs-reading {
  min-height: 0;
}
.docs-reading .docs-content {
  padding-top: 10px;
}
.docs-reading > .reading-index,
.docs-reading > .article-rail {
  padding-top: 12px;
}
.docs-reading .article-header {
  padding-bottom: 24px;
}
.docs-reading .article-header h1 {
  font-size: 38px;
  font-weight: 700;
}
.docs-reading .prose {
  font-size: 15px;
  line-height: 1.95;
}
.docs-reading .prose h2 {
  font-size: 25px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
  margin-top: 36px;
}
.docs-reading .prose h3 {
  font-size: 20px;
}
.docs-reading .prose blockquote {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--soft);
  padding: 14px 20px;
  border-radius: 6px;
}
.gitbook-workspace .ad-copy {
  padding: 14px;
  font-size: 12px;
}
.gitbook-workspace .toc {
  font-size: 12px;
}
.gitbook-workspace .toc > div {
  font-size: 11px;
  color: var(--muted);
}
.theme-gitbook .site-footer {
  max-width: 1500px;
  padding: 16px 0;
}
@media (max-width: 1160px) {
  .docs-workspace {
    grid-template-columns: 180px minmax(0, 1fr) 184px;
    gap: 24px;
  }
  .docs-workspace > .home-rail,
  .docs-workspace > .article-rail {
    padding-left: 18px;
  }
  .docs-workspace > .reading-index {
    padding-right: 14px;
  }
}
@media (max-width: 980px) {
  .docs-workspace.docs-without-index {
    display: block;
  }
  .docs-workspace {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 24px;
  }
  .docs-workspace > .home-rail,
  .docs-workspace > .article-rail {
    grid-column: 2;
    border: 0;
    padding: 0 0 28px;
    margin: 0;
  }
  .docs-workspace > .home-rail .home-sidebar {
    display: none;
  }
  .docs-workspace .reading-index {
    grid-row: 1/3;
  }
  .docs-workspace > .article-rail .ad-slot {
    grid-template-columns: minmax(0, 1fr);
  }
  .docs-workspace {
    min-height: 0;
  }
  .docs-content {
    padding-bottom: 28px;
  }
}
@media (max-width: 760px) {
  .gitbook-workspace {
    width: calc(100% - 36px);
  }
  .docs-workspace {
    display: block;
  }
  .docs-content {
    padding: 24px 0;
  }
  .docs-welcome h1 {
    font-size: 32px;
  }
  .gitbook-workspace .docs-chapter {
    grid-template-columns: 24px minmax(0, 1fr);
    gap: 12px;
    padding: 18px 16px;
  }
  .chapter-arrow {
    display: none;
  }
  .docs-chapter h2 {
    font-size: 21px;
  }
  .docs-workspace > .home-rail,
  .docs-workspace > .article-rail {
    padding: 0 0 24px;
  }
  .docs-reading .article-header h1 {
    font-size: 30px;
  }
  .docs-reading .prose h2 {
    font-size: 23px;
  }
  .gitbook-workspace .article-rail {
    margin: 0;
  }
}