.document-page {
  background: #f5f7fa;
}
.document-center {
  min-height: 720px;
  color: #252b3a;
  background: #f5f7fa;
}
.document-container {
  width: 1200px;
  margin: 0 auto;
}
.document-article-meta span {
  padding: 3px 9px;
  color: #4f6f9e;
  font-size: 12px;
  background: #eef4fd;
  border-radius: 3px;
}
.document-reader-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 230px;
  gap: 22px;
  width: calc(100% - 48px);
  max-width: 1660px;
  margin: 0 auto;
  padding: 28px 0 70px;
}
.document-sidebar,
.document-toc {
  position: sticky;
  top: 20px;
  align-self: start;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  background: #ffffff;
  border: 1px solid #e7ebf1;
  border-radius: 8px;
}
.document-sidebar {
  padding: 20px 18px 24px;
}
.document-home-link {
  display: block;
  margin-bottom: 16px;
  color: #f51600;
  font-weight: 600;
}
.document-sidebar-search {
  display: flex;
  height: 38px;
  margin-bottom: 22px;
  border: 1px solid #dce2ec;
  border-radius: 4px;
}
.document-sidebar-search input {
  min-width: 0;
  flex: 1;
  padding: 0 10px;
  border: 0;
  background: transparent;
}
.document-sidebar-search button,
.document-sidebar-search > span {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 38px;
  color: #748095;
  border: 0;
  background: transparent;
}
.document-tree section + section {
  margin-top: 24px;
}
.document-tree h2 {
  margin: 0 0 8px;
  color: #232a39;
  font-size: 15px;
}
.document-tree a {
  display: block;
  margin: 2px 0;
  padding: 9px 10px;
  color: #596579;
  line-height: 1.45;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
}
.document-tree a small {
  display: block;
  margin-top: 3px;
  color: #a0a8b4;
}
.document-tree a:hover,
.document-tree a.active {
  color: #f51600;
  background: #fff5f3;
  border-left-color: #f51600;
}
.document-article {
  min-width: 0;
  padding: 42px 54px 54px;
  background: #ffffff;
  border: 1px solid #e7ebf1;
  border-radius: 8px;
}
.document-breadcrumb {
  display: flex;
  gap: 8px;
  margin-bottom: 22px;
  color: #9aa3b1;
  font-size: 13px;
}
.document-breadcrumb a {
  color: #5274a5;
}
.document-article-head {
  padding-bottom: 28px;
  border-bottom: 1px solid #edf0f4;
}
.document-article-head h1 {
  margin: 0;
  color: #202737;
  font-size: 34px;
  line-height: 1.4;
}
.document-article-head > p {
  margin-top: 12px;
  color: #6e788b;
  line-height: 1.7;
}
.document-article-meta {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
.markdown-body {
  padding-top: 18px;
  color: #303746;
  font-size: 15px;
  line-height: 1.85;
  overflow-wrap: anywhere;
}
.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  scroll-margin-top: 24px;
  color: #202737;
  line-height: 1.45;
}
.markdown-body h1 {
  margin: 42px 0 20px;
  padding-bottom: 12px;
  font-size: 30px;
  border-bottom: 1px solid #edf0f4;
}
.markdown-body h2 {
  margin: 38px 0 18px;
  font-size: 25px;
}
.markdown-body h3 {
  margin: 30px 0 14px;
  font-size: 20px;
}
.markdown-body h4 {
  margin: 24px 0 12px;
  font-size: 17px;
}
.markdown-body p,
.markdown-body ul,
.markdown-body ol,
.markdown-body blockquote,
.markdown-body pre,
.markdown-body table {
  margin: 14px 0;
}
.markdown-body ul,
.markdown-body ol {
  padding-left: 26px;
}
.markdown-body li {
  list-style: inherit;
}
.markdown-body img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 20px auto;
  border: 1px solid #edf0f4;
  border-radius: 4px;
}
.markdown-body table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}
.markdown-body th,
.markdown-body td {
  min-width: 110px;
  padding: 9px 12px;
  border: 1px solid #dce2ec;
}
.markdown-body th {
  background: #f4f7fb;
}
.markdown-body blockquote {
  padding: 12px 18px;
  color: #667085;
  background: #f7f9fc;
  border-left: 4px solid #6b8fc8;
}
.markdown-body code {
  padding: 2px 5px;
  color: #c7254e;
  background: #f8f2f4;
  border-radius: 3px;
}
.markdown-body pre {
  padding: 16px;
  overflow-x: auto;
  background: #202737;
  border-radius: 5px;
}
.markdown-body pre code {
  padding: 0;
  color: #eef2f8;
  background: transparent;
}
.document-pagination {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 48px;
  padding-top: 26px;
  border-top: 1px solid #edf0f4;
}
.document-pagination a {
  display: flex;
  flex-direction: column;
  padding: 14px 16px;
  color: #4f5c70;
  background: #f7f9fc;
  border-radius: 5px;
}
.document-pagination a.next {
  text-align: right;
}
.document-pagination small {
  margin-bottom: 5px;
  color: #9aa3b1;
}
.document-pagination a:hover span {
  color: #f51600;
}
.document-toc {
  padding: 22px 16px;
}
.document-toc h2 {
  margin: 0 0 14px;
  color: #2b3342;
  font-size: 15px;
}
.document-toc nav {
  border-left: 1px solid #e5e9ef;
}
.document-toc a {
  display: block;
  padding: 5px 8px 5px 13px;
  color: #7a8497;
  font-size: 13px;
  line-height: 1.5;
  border-left: 2px solid transparent;
}
.document-toc a.level-2 {
  padding-left: 22px;
}
.document-toc a.level-3,
.document-toc a.level-4 {
  padding-left: 32px;
}
.document-toc a:hover,
.document-toc a.active {
  color: #f51600;
  border-left-color: #f51600;
}
.document-toc > p {
  color: #9aa3b1;
  font-size: 13px;
}
.document-mobile-toolbar,
.document-mobile-panel,
.document-mobile-mask {
  display: none;
}

@media (max-width: 1200px) {
  .document-reader-layout {
    grid-template-columns: 240px minmax(0, 1fr);
  }
  .document-toc {
    display: none;
  }
}

@media (max-width: 768px) {
  .document-page-mobile .document-center {
    min-height: 70vh;
  }
  .document-page-mobile .document-container {
    width: auto;
    margin: 0;
    padding-right: 0.75rem;
    padding-left: 0.75rem;
  }
  .document-page-mobile .document-mobile-toolbar {
    position: sticky;
    top: 3.5rem;
    z-index: 20;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.65rem 0.75rem;
    background: #ffffff;
    border-bottom: 1px solid #e5e9ef;
  }
  .document-page-mobile .document-mobile-toolbar button,
  .document-page-mobile .document-mobile-toolbar a {
    padding: 0;
    color: #566176;
    font-size: 1rem;
    border: 0;
    background: transparent;
  }
  .document-page-mobile .document-article {
    padding-top: 1.2rem;
    padding-bottom: 2.5rem;
    border: 0;
    border-radius: 0;
  }
  .document-page-mobile .document-breadcrumb {
    margin-bottom: 0.75rem;
    font-size: 0.65rem;
  }
  .document-page-mobile .document-article-head {
    padding-bottom: 1rem;
  }
  .document-page-mobile .document-article-head h1 {
    font-size: 1.25rem;
  }
  .document-page-mobile .document-article-head > p {
    font-size: 0.72rem;
  }
  .document-page-mobile .document-article-meta {
    flex-wrap: wrap;
  }
  .document-page-mobile .markdown-body {
    padding-top: 0.7rem;
    font-size: 0.78rem;
    line-height: 1.75;
  }
  .document-page-mobile .markdown-body h1 {
    margin-top: 1.6rem;
    font-size: 1.25rem;
  }
  .document-page-mobile .markdown-body h2 {
    margin-top: 1.4rem;
    font-size: 1.1rem;
  }
  .document-page-mobile .markdown-body h3 {
    margin-top: 1.2rem;
    font-size: 0.95rem;
  }
  .document-page-mobile .markdown-body h4 {
    font-size: 0.85rem;
  }
  .document-page-mobile .markdown-body img {
    margin: 0.8rem auto;
  }
  .document-page-mobile .document-pagination {
    /* 移动端上下篇保持两列排列，便于同一行完成相邻文档切换。 */
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 2rem;
  }
  .document-page-mobile .document-mobile-mask {
    position: fixed;
    inset: 0;
    z-index: 98;
    background: rgba(19, 27, 40, 0.48);
  }
  .document-page-mobile .document-mobile-mask.open {
    display: block;
  }
  .document-page-mobile .document-mobile-panel {
    position: fixed;
    top: 0;
    bottom: 0;
    left: -86%;
    z-index: 99;
    display: block;
    width: 82%;
    padding: 1rem;
    overflow-y: auto;
    background: #ffffff;
    transition: left 0.22s ease;
  }
  .document-page-mobile .document-mobile-panel.open {
    left: 0;
  }
  .document-page-mobile .document-mobile-panel > header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #edf0f4;
  }
  .document-page-mobile .document-mobile-panel > header h2 {
    margin: 0;
    font-size: 1rem;
  }
  .document-page-mobile .document-mobile-panel > header button {
    border: 0;
    background: transparent;
  }
  .document-page-mobile .document-tree h2 {
    font-size: 0.8rem;
  }
  .document-page-mobile .document-tree a {
    padding: 0.55rem;
    font-size: 0.75rem;
  }
  .document-page-mobile .document-toc nav {
    border-left: 1px solid #e5e9ef;
  }
  .document-page-mobile .document-mobile-panel[data-document-panel-name="toc"] a {
    display: block;
    padding: 0.45rem 0.5rem;
    color: #606b80;
    font-size: 0.75rem;
    border-left: 2px solid transparent;
  }
  .document-page-mobile .document-mobile-panel[data-document-panel-name="toc"] a.level-2 {
    padding-left: 1rem;
  }
  .document-page-mobile .document-mobile-panel[data-document-panel-name="toc"] a.level-3,
  .document-page-mobile .document-mobile-panel[data-document-panel-name="toc"] a.level-4 {
    padding-left: 1.5rem;
  }
  .document-page-mobile .document-mobile-panel[data-document-panel-name="toc"] a.active {
    color: #f51600;
    border-left-color: #f51600;
  }
}