.tabs {
  max-width: 100%;
}

.tab-list {
  display: flex;
  align-items: stretch;
  gap: 4px;
  max-width: 100%;
  padding: 5px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel-soft);
  scrollbar-width: thin;
}

.tab-button {
  min-height: 42px;
  padding: 0 16px;
  border: 0;
  border-radius: var(--radius-xs);
  flex: 1 0 auto;
  background: transparent;
  color: var(--color-muted);
  font-size: 13px;
  white-space: nowrap;
}

.tab-button:hover {
  color: var(--color-accent-dark);
}

.tab-button.active,
.tab-button[aria-selected="true"] {
  background: var(--color-panel);
  color: var(--color-accent-dark);
  box-shadow: 0 1px 4px var(--color-shadow-light);
}

.tab-panel {
  padding-top: 28px;
}

.tab-panel[hidden] {
  display: none;
}

.toc {
  position: sticky;
  top: 14px;
  z-index: 10;
  max-width: 100%;
  padding: 7px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  gap: 4px;
  background: var(--color-panel);
  box-shadow: 0 7px 18px var(--color-shadow-light);
  scrollbar-width: thin;
}

.toc a {
  min-height: 38px;
  padding: 0 13px;
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  color: var(--color-muted);
  font-size: 12px;
  white-space: nowrap;
}

.toc a:hover {
  background: var(--color-panel-soft);
  color: var(--color-accent-dark);
}

.faq-list {
  border-top: 1px solid var(--color-border);
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
  min-height: 72px;
  padding: 18px 44px 18px 0;
  position: relative;
  display: flex;
  align-items: center;
  color: var(--color-text);
  font-size: 17px;
  font-weight: var(--weight-medium);
  list-style: none;
  cursor: pointer;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before,
.faq-item summary::after {
  position: absolute;
  right: 8px;
  width: 14px;
  height: 1px;
  background: var(--color-accent);
  content: "";
  transition: transform var(--transition-fast);
}

.faq-item summary::after {
  transform: rotate(90deg);
}

.faq-item[open] summary::after {
  transform: rotate(0);
}

.faq-answer {
  max-width: 850px;
  padding: 0 44px 24px 0;
  color: var(--color-muted);
}

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.term-card {
  min-width: 0;
  padding: 22px;
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-panel);
  box-shadow: inset 0 0 0 1px var(--color-border);
}

.term-card dt {
  margin-bottom: 8px;
  color: var(--color-text);
  font-size: 17px;
  font-weight: var(--weight-medium);
}

.term-card dd {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.download-card {
  min-width: 0;
  padding: 25px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  background: var(--color-panel);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.download-card:hover {
  border-color: var(--color-cold-line-soft);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.download-card-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.download-card-icon {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
}

.download-card-title {
  margin: 0;
  font-size: 20px;
  font-weight: var(--weight-medium);
}

.download-card-copy {
  margin: 17px 0 20px;
  color: var(--color-muted);
  font-size: 14px;
}

.download-card-actions {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.download-card-version:empty {
  display: none;
}

.download-card-version:not(:empty) {
  margin-top: 8px;
  display: block;
  color: var(--color-muted-light);
  font-family: var(--font-mono);
  font-size: 11px;
}

.client-badge {
  min-height: 24px;
  max-width: 100%;
  padding: 0 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  overflow: hidden;
  font-size: 10px;
  line-height: 1;
  white-space: nowrap;
}

.client-badge-primary {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-white-soft);
}

.client-badge-recommended {
  border-color: var(--color-cold-line-soft);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

.client-badge-archived {
  border-color: var(--color-border);
  background: var(--color-panel-soft);
  color: var(--color-muted);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.article-card {
  min-width: 0;
  padding: 25px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  background: var(--color-panel);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.article-card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.article-card-meta {
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  color: var(--color-muted-light);
  font-family: var(--font-mono);
  font-size: 10px;
}

.article-card h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.35;
}

.article-card p {
  color: var(--color-muted);
  font-size: 14px;
}

.article-card-link {
  margin-top: auto;
  color: var(--color-accent-dark);
  font-size: 13px;
  font-weight: var(--weight-medium);
}

.callout {
  margin: 28px 0;
  padding: 21px 24px;
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

.callout-title {
  margin-bottom: 7px;
  color: var(--color-accent-dark);
  font-weight: var(--weight-semibold);
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout-warn {
  border-left-color: var(--color-warn);
  background: var(--color-panel-soft);
  color: var(--color-text);
}

.callout-error {
  border-left-color: var(--color-error);
  background: var(--color-panel-soft);
  color: var(--color-text);
}

.dl-fab {
  position: fixed;
  right: max(18px, calc((100vw - var(--page-width)) / 2));
  bottom: 20px;
  z-index: 35;
  max-width: calc(100vw - 36px);
  min-height: 50px;
  padding: 8px 15px 8px 10px;
  border: 1px solid var(--color-cold-line-soft);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 11px;
  background: var(--color-accent-dark);
  color: var(--color-white-soft);
  box-shadow: var(--shadow-window);
  font-size: 13px;
  font-weight: var(--weight-medium);
}

.dl-fab:hover {
  background: var(--color-accent-deep);
  color: var(--color-white-soft);
  transform: translateY(-1px);
}

.dl-fab-icon {
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-board-line-strong);
  border-radius: var(--radius-xs);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.dl-fab-icon svg {
  width: 17px;
  height: 17px;
}

.end-download-card {
  margin-top: 54px;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--color-cold-line-soft);
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
}

.end-download-card h2,
.end-download-card h3 {
  color: var(--color-accent-dark);
}

.end-download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.rule-observatory {
  display: grid;
  grid-template-columns: minmax(230px, 0.36fr) minmax(0, 1fr);
  gap: 22px;
}

.rule-index {
  display: grid;
  align-content: start;
  gap: 4px;
}

.rule-index button {
  min-height: 68px;
  padding: 12px 14px;
  border: 0;
  border-left: 2px solid var(--color-border);
  background: transparent;
  color: var(--color-muted);
  text-align: left;
}

.rule-index button.active {
  border-left-color: var(--color-accent);
  background: var(--color-panel);
  color: var(--color-accent-dark);
}

.rule-index strong,
.rule-index span {
  display: block;
}

.rule-index span {
  margin-top: 4px;
  font-size: 12px;
}

.rule-analysis {
  min-height: 390px;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.prose > .data-table {
  display: block;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 760px) {
  .glossary-grid,
  .download-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .rule-observatory {
    grid-template-columns: 1fr;
  }

  .rule-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .toc {
    top: 8px;
  }
}

@media (max-width: 640px) {
  .tab-list {
    margin-inline: 0;
  }

  .faq-item summary {
    min-height: 64px;
    padding-right: 36px;
    font-size: 16px;
  }

  .faq-answer {
    padding-right: 20px;
  }

  .rule-index {
    grid-template-columns: 1fr;
  }

  .download-card,
  .article-card,
  .term-card {
    transform: none;
  }

  .dl-fab {
    right: 14px;
    bottom: 14px;
    max-width: calc(100vw - 28px);
  }

  .end-download-actions .button {
    width: 100%;
  }
}