/* HSK-BASE-003/006: scoped readable explanations; retain the existing UI. */
.seo-ranking-disclosure {
  border: 1px solid var(--hanyu-line, #d8d1c8);
  border-radius: 12px;
  background: #faf7f2;
  color: var(--hanyu-ink, #282320);
  font-size: 16px;
  line-height: 1.65;
}
.seo-ranking-disclosure > summary {
  padding: 16px 20px;
  min-height: 44px;
  cursor: pointer;
  font-weight: 650;
}
.seo-ranking-disclosure__content { padding: 0 20px 20px; }
.seo-ranking-disclosure > summary:focus-visible { outline: 3px solid currentColor; outline-offset: 4px; }
.seo-ranking-actions { display: flex; flex-wrap: wrap; gap: 12px 24px; margin-top: 24px; }
.seo-ranking-actions a { display: inline-flex; align-items: center; min-height: 44px; }
.seo-ranking-help { color: var(--hanyu-ink, #282320); font-size: 16px; line-height: 1.75; }
.seo-ranking-help h2 { font-size: clamp(24px, 3vw, 36px); line-height: 1.25; margin: 0 0 16px; }
.seo-ranking-help h3 { font-size: 21px; line-height: 1.4; margin: 28px 0 12px; }
.seo-ranking-help p, .seo-ranking-help ol { max-width: 78ch; }
.seo-ranking-help ol { padding-left: 24px; }
.seo-ranking-help li { margin-bottom: 12px; }
.seo-ranking-help a, .seo-ranking-actions a { color: var(--hanyu-primary, #8d2825); text-decoration: underline; text-underline-offset: 3px; overflow-wrap: anywhere; }
.seo-ranking-help a:focus-visible, .seo-ranking-actions a:focus-visible { outline: 3px solid currentColor; outline-offset: 4px; }
.seo-ranking-help .seo-ranking-source { font-size: 14px; }
#vocabulary-version-help, #hsk-version-comparison { scroll-margin-top: 100px; }