/* PPTN editorial extension. Preserve the public navy/light palette and IBM Plex.
   Design variance 4 / motion 2 / density 4: long-form reading with direct CTAs.
   The channel illustration describes content types; it contains no invented data. */
.article-skip { position: fixed; top: -100px; left: 16px; z-index: 1100; padding: 12px 20px; background: var(--brand-navy-900); color: white; }
.article-skip:focus { top: 12px; }
.editorial-header { background: var(--color-canvas); padding: 32px 0 42px; border-bottom: 1px solid var(--color-border); }
.article-breadcrumb { display: flex; flex-wrap: wrap; gap: 10px; font-size: 14px; color: var(--color-text-muted-on-light); margin-bottom: 30px; }
.article-breadcrumb a { text-decoration: underline; text-underline-offset: 3px; }
.editorial-category { color: var(--color-action-on-light); font-weight: 600; margin-bottom: 14px; }
.editorial-header h1 { max-width: 1000px; font-size: clamp(2rem, 3.5vw, 2.8rem); font-weight: 700; line-height: 1.17; letter-spacing: -.025em; color: var(--color-text-on-light); }
.editorial-summary { max-width: 72ch; font-size: 18px; margin-top: 20px; }
.editorial-meta { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; font-size: 14px; margin-top: 24px; color: var(--color-text-muted-on-light); }
.editorial-meta a { text-decoration: underline; }
.reading-time { margin-left: 12px; }
.editorial-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 44px; padding-top: 48px; padding-bottom: 72px; }
.article-sidebar { min-width: 0; }
.article-toc { position: sticky; top: 105px; max-height: calc(100dvh - 130px); overflow: auto; padding-right: 12px; }
.article-toc summary { font-weight: 700; color: var(--color-text-on-light); cursor: pointer; padding: 8px 0 14px; }
.article-toc nav { display: grid; gap: 13px; }
.article-toc a { font-size: 13px; line-height: 1.5; color: var(--color-text-muted-on-light); }
.article-toc a:hover { color: var(--color-action-on-light); text-decoration: underline; }
.editorial-content { min-width: 0; }
.editorial-content p { color: var(--color-text-body); font-size: 17px; line-height: 1.8; }
.editorial-content h2, .editorial-content h3, .telegram-cta { scroll-margin-top: 110px; }
.editorial-content h2 { margin-top: 44px; }
.editorial-content h3 { font-size: 20px; margin: 30px 0 12px; color: var(--color-text-on-light); }
.editorial-content hr { border: 0; border-top: 1px solid var(--color-border); margin: 36px 0; }
.telegram-cta { background: var(--brand-navy-900); border-radius: var(--radius-panel); padding: 30px; margin: 36px 0; }
.telegram-cta--preview { display: grid; gap: 28px; }
.telegram-cta h2 { color: var(--color-text); font-size: clamp(1.4rem, 2.5vw, 1.8rem); line-height: 1.2; margin: 0 0 14px; }
.telegram-cta p { color: var(--color-text); font-size: 16px; line-height: 1.65; margin-bottom: 22px; }
.editorial-content .telegram-cta-button { display: inline-flex; align-items: center; gap: 18px; padding: 13px 20px; background: var(--brand-cyan-600); color: var(--brand-navy-950); border-radius: var(--radius-control); text-decoration: none; font-size: 16px; font-weight: 700; min-height: 48px; }
.editorial-content .telegram-cta-button:hover { background: var(--brand-cyan-500); color: var(--brand-navy-950); }
.telegram-cta-button:active { transform: translateY(1px); }
.editorial-page a:focus-visible, .editorial-page summary:focus-visible { outline: 3px solid var(--color-action-on-light); outline-offset: 4px; }
.telegram-cta a:focus-visible { outline-color: var(--color-focus); }
.channel-preview { border: 1px solid var(--color-border-strong); background: var(--color-canvas); border-radius: var(--radius-panel); padding: 18px; }
.channel-preview-header { display: flex; gap: 12px; align-items: center; margin-bottom: 16px; color: var(--color-text-on-light); }
.channel-preview-header img { object-fit: contain; }
.channel-preview-header strong { display: block; }
.channel-preview-header span { font-size: 13px; color: var(--color-text-muted-on-light); }
.channel-preview-message { background: var(--color-surface); border-radius: var(--radius-control); border-left: 3px solid var(--color-action); padding: 12px 14px; margin-top: 10px; color: var(--color-text-on-light); }
.channel-preview-message p { color: var(--color-text-body); font-size: 14px; line-height: 1.5; margin: 4px 0 0; }
.channel-preview figcaption { font-size: 12px; color: var(--color-text-muted-on-light); margin-top: 12px; }
@media (min-width: 1100px) { .telegram-cta--preview { grid-template-columns: 1fr 1fr; padding: 26px; gap: 22px; align-items: center; } }
@media (max-width: 800px) {
  .editorial-layout { grid-template-columns: minmax(0, 1fr); gap: 30px; padding-top: 24px; }
  .article-toc { position: static; max-height: 200px; border-bottom: 1px solid var(--color-border); padding-bottom: 16px; }
  .article-toc nav { grid-template-columns: 1fr 1fr; gap: 10px 20px; }
  .editorial-header { padding-top: 24px; }
  .article-breadcrumb { margin-bottom: 24px; }
}
@media (max-width: 480px) {
  .editorial-header h1 { font-size: 30px; }
  .editorial-summary { font-size: 17px; }
  .telegram-cta { padding: 24px; }
  .article-toc nav { grid-template-columns: 1fr; }
  .editorial-content p { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
/* Keep the shared Telegram shortcut from covering the long reading column. */
.editorial-page .telegram-float { width: 56px; height: 56px; min-height: 56px; padding: 0; justify-content: center; }
.editorial-page .telegram-float__copy { display: none; }