.document-reader {
  position: relative;
  padding: clamp(26px, 4.6vw, 46px);
}

.document-reader-header {
  display: grid;
  gap: 0;
}

.document-title-block {
  min-width: 0;
  max-width: 720px;
}

.document-reader .category-breadcrumb {
  display: inline-flex;
  margin-top: 7px;
  color: #59616d;
  font-size: 13px;
  font-weight: 700;
}

.document-reader .document-head h1 {
  margin-top: 9px;
  max-width: 760px;
  text-wrap: balance;
}

.document-primary-actions {
  padding-top: 3px;
}

.document-reader .document-meta {
  margin-top: 26px;
  padding: 11px 0;
}

.document-summary {
  margin-top: 22px;
  padding: 20px 22px;
  border: 1px solid #dfe4eb;
  border-radius: 16px;
  background: #f7f9fc;
}

.document-summary-label {
  margin-bottom: 7px;
  color: #5f6875;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .11em;
}

.document-summary p {
  max-width: 760px;
  margin: 0;
  color: #343a44;
  font-size: 17px;
  line-height: 1.72;
  letter-spacing: -.12px;
}

.reader-jump-nav {
  position: sticky;
  top: 72px;
  z-index: 9;
  display: flex;
  align-items: center;
  gap: 5px;
  margin: 18px -8px 0;
  padding: 8px;
  border: 1px solid #e1e5ea;
  border-radius: 13px;
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 8px 22px rgba(23, 31, 44, .05);
  backdrop-filter: blur(14px);
}

.reader-jump-nav a {
  flex: 0 0 auto;
  padding: 7px 10px;
  border-radius: 8px;
  color: #5b626d;
  font-size: 12px;
  font-weight: 700;
}

.reader-jump-nav a:hover,
.reader-jump-nav a:focus-visible {
  background: #f1f3f6;
  color: #17191f;
  outline: none;
}

.reader-jump-spacer {
  flex: 1 1 auto;
  min-width: 12px;
}

.document-reading-layout {
  display: grid;
  grid-template-columns: minmax(180px, 218px) minmax(0, 1fr);
  gap: 38px;
  align-items: start;
  margin-top: 34px;
}

.document-reading-layout.is-single-column {
  grid-template-columns: minmax(0, 1fr);
}

.document-reader-rail {
  position: sticky;
  top: 132px;
  min-width: 0;
}

.document-reader .reader-toc {
  max-height: calc(100vh - 154px);
  margin: 0;
  padding: 0;
  overflow: auto;
  border-color: #e0e4ea;
  border-radius: 14px;
  background: #fafbfc;
  scrollbar-width: thin;
}

.reader-toc summary {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  border-bottom: 1px solid transparent;
  background: #fafbfc;
  cursor: pointer;
  list-style: none;
}

.reader-toc[open] summary {
  border-bottom-color: #e8ebef;
}

.reader-toc summary::-webkit-details-marker {
  display: none;
}

.reader-toc summary strong {
  color: #252a32;
  font-size: 12px;
}

.reader-toc summary span {
  color: #8a9099;
  font-size: 10px;
}

.document-reader .reader-toc ol {
  margin: 0;
  padding: 12px 14px 14px 30px;
  gap: 7px;
}

.document-reader .reader-toc li {
  color: #606873;
  font-size: 12px;
  line-height: 1.45;
}

.document-reader .reader-toc .toc-level-3 {
  margin-left: 10px;
  color: #7b828c;
  font-size: 11px;
}

.document-reader .reader-toc a {
  display: inline-block;
  padding: 2px 0;
}

.document-reading-main {
  min-width: 0;
  max-width: 680px;
}

.document-reader .document-body {
  margin-top: 0;
  color: #242830;
  font-size: 17px;
  line-height: 1.86;
  letter-spacing: -.08px;
}

.document-reader .document-body .wiki-line {
  margin: 0 0 .9em;
}

.document-reader .document-body .wiki-space {
  height: .5em;
}

.document-reader .document-body .wiki-heading-2 {
  margin: 2.25em 0 .72em;
  padding-bottom: .42em;
  border-bottom: 1px solid #e8ebef;
  color: #171a20;
  font-size: 27px;
  line-height: 1.3;
  letter-spacing: -.65px;
}

.document-reader .document-body .wiki-heading-2:first-child {
  margin-top: 0;
}

.document-reader .document-body .wiki-heading-3 {
  margin: 1.9em 0 .62em;
  color: #22262d;
  font-size: 20px;
  line-height: 1.4;
  letter-spacing: -.35px;
}

.document-reader .document-body .wiki-bullets,
.document-reader .document-body .wiki-numbered {
  margin: 7px 0 22px;
  padding-left: 26px;
}

.document-reader .document-body .wiki-bullets li,
.document-reader .document-body .wiki-numbered li {
  padding-left: 3px;
  margin: 6px 0;
}

.document-reader .document-body .wiki-quote {
  margin: 24px 0;
  padding: 17px 19px;
  border-left-color: #8f98a6;
  background: #f6f7f9;
  color: #4c545f;
  line-height: 1.72;
}

.document-reader .document-body .wiki-divider {
  margin: 36px 0;
}

.document-reader .wiki-link {
  font-weight: 650;
  text-decoration-thickness: .08em;
}

.document-reader .citation a {
  padding: 2px;
  border-radius: 4px;
}

.document-reader .citation a:hover {
  background: #edf2fa;
}

#article-body,
#document-toc,
.document-reader .wiki-heading,
.document-reader h2[id] {
  scroll-margin-top: 138px;
}

.reader-source-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 34px;
  padding: 14px 16px;
  border: 1px solid #dce1e7;
  border-radius: 12px;
  background: #fafbfc;
}

.reader-source-cta span {
  color: #777f89;
  font-size: 12px;
}

.reader-source-cta strong {
  color: #343a43;
  font-size: 13px;
}

.reader-section {
  margin-top: 52px;
  padding-top: 30px;
}

.reader-section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 17px;
}

.reader-section-head h2 {
  margin-bottom: 0;
}

.reader-section-head > span {
  max-width: 330px;
  padding-bottom: 2px;
  color: #7b828c;
  font-size: 12px;
  line-height: 1.55;
  text-align: right;
}

.document-reader .source-list {
  gap: 9px;
}

.document-reader .source-list li {
  position: relative;
  padding: 15px 16px 15px 10px;
  border-color: #e0e4e9;
  background: #fbfcfd;
  scroll-margin-top: 138px;
}

.document-reader .source-main > a {
  line-height: 1.5;
}

.document-reader .source-main span {
  padding: 2px 6px;
  border-radius: 999px;
  background: #eef1f4;
}

.document-reader .knowledge-link {
  min-height: 48px;
  padding: 12px 14px;
  background: #fff;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}

.document-reader .knowledge-link:hover {
  transform: translateY(-1px);
  border-color: #c8cdd5;
  background: #fafbfc;
}

.document-reader .related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.document-reader .related-card {
  min-width: 0;
  min-height: 156px;
  padding: 17px;
  border: 1px solid #dfe3e8;
  border-radius: 14px;
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform .15s ease, border-color .15s ease;
}

.document-reader .related-card:hover {
  transform: translateY(-2px);
  border-color: #c5cad2;
}

.document-reader .related-card strong {
  font-size: 15px;
  line-height: 1.42;
}

.document-reader .related-card span {
  display: -webkit-box;
  overflow: hidden;
  color: #6d7480;
  font-size: 12px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.document-reader .related-card em {
  margin-top: auto;
  color: #59616d;
  font-size: 11px;
  font-style: normal;
  font-weight: 750;
}

.reader-contribute {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-top: 54px;
  padding: 24px 26px;
  border-radius: 17px;
  background: #20242b;
  color: #fff;
}

.reader-contribute > div:first-child {
  max-width: 580px;
}

.reader-contribute .eyebrow {
  color: #aeb6c1;
}

.reader-contribute strong {
  display: block;
  margin-top: 7px;
  font-size: 18px;
  line-height: 1.45;
}

.reader-contribute p {
  margin: 5px 0 0;
  color: #c4cad2;
  font-size: 12px;
}

.reader-contribute-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.reader-contribute .button {
  border-color: #fff;
  background: #fff;
  color: #1f2329;
}

.reader-contribute .button.secondary {
  border-color: #69717d;
  background: transparent;
  color: #fff;
}

.reader-secondary-panels {
  margin-top: 30px;
}

.reader-secondary-panels .compact-history,
.reader-secondary-panels .quality-collapsed {
  margin-top: 10px;
  margin-bottom: 0;
  background: #fbfcfd;
}

.document-reader .document-footer {
  margin-top: 32px;
}

@media (max-width: 820px) {
  .document-reading-layout {
    grid-template-columns: minmax(160px, 190px) minmax(0, 1fr);
    gap: 28px;
  }

  .document-reader .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .document-reader {
    padding: 22px 18px 26px;
    border-radius: 16px;
  }

  .document-reader .document-head h1 {
    margin-bottom: 8px;
    font-size: clamp(32px, 10vw, 42px);
    letter-spacing: -1.35px;
  }

  .document-primary-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .document-reader .document-meta {
    gap: 6px 12px;
    margin-top: 20px;
  }

  .document-summary {
    margin-top: 18px;
    padding: 17px 16px;
    border-radius: 13px;
  }

  .document-summary p {
    font-size: 15.5px;
    line-height: 1.68;
  }

  .reader-jump-nav {
    top: 62px;
    margin: 14px -6px 0;
    overflow-x: auto;
    padding: 6px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .reader-jump-nav::-webkit-scrollbar {
    display: none;
  }

  .reader-jump-nav a {
    padding: 7px 9px;
  }

  .reader-jump-spacer {
    display: none;
  }

  .document-reading-layout,
  .document-reading-layout.is-single-column {
    grid-template-columns: 1fr;
    gap: 22px;
    margin-top: 24px;
  }

  .document-reader-rail {
    position: static;
  }

  .document-reader .reader-toc {
    max-height: none;
  }

  .document-reading-main {
    max-width: none;
  }

  .document-reader .document-body {
    font-size: 16.2px;
    line-height: 1.8;
  }

  .document-reader .document-body .wiki-heading-2 {
    margin-top: 2em;
    font-size: 23px;
  }

  .document-reader .document-body .wiki-heading-3 {
    font-size: 18px;
  }

  #article-body,
  #document-toc,
  .document-reader .wiki-heading,
  .document-reader h2[id],
  .document-reader .source-list li {
    scroll-margin-top: 116px;
  }

  .reader-source-cta {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
    margin-top: 26px;
  }

  .reader-section {
    margin-top: 42px;
    padding-top: 24px;
  }

  .reader-section-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 14px;
  }

  .reader-section-head > span {
    max-width: none;
    text-align: left;
  }

  .document-reader .source-list {
    padding-left: 22px;
  }

  .document-reader .related-grid {
    grid-auto-flow: column;
    grid-template-columns: none;
    grid-auto-columns: minmax(230px, 82%);
    gap: 9px;
    margin-right: -18px;
    padding-right: 18px;
    overflow-x: auto;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
  }

  .document-reader .related-grid::-webkit-scrollbar {
    display: none;
  }

  .document-reader .related-card {
    min-height: 150px;
    scroll-snap-align: start;
  }

  .reader-contribute {
    align-items: stretch;
    flex-direction: column;
    gap: 18px;
    margin-top: 44px;
    padding: 21px 18px;
  }

  .reader-contribute-actions {
    justify-content: stretch;
  }

  .reader-contribute-actions .button {
    flex: 1 1 140px;
  }

  .reader-secondary-panels {
    margin-top: 24px;
  }
}