/* T18 Learn hub + Glossary A–Z - page layout only; visual tokens come from css/v2 */
.ln [hidden] { display: none !important; }
.ln-hero { border-bottom: var(--stroke); }
.ln-hero .psb-hero__title:not(.psb-hero__title--l) { font-size: clamp(3.5rem, 2rem + 6vw, 7rem); }
.ln-hero .psb-hero__title--l { color: var(--text-display); }

.ln-doors { list-style: none; margin: 0; padding: 0; }
.ln-doors .psb-tile { height: 100%; gap: 6px; padding: 22px 24px; }
.ln-doors .psb-tile strong { font-size: 24px; margin-bottom: 4px; }
.ln-doors .psb-tile span { font-size: var(--fs-body-s); color: var(--ink-700); }
.ln-doors .psb-tile .psb-mono { font-size: 12px; color: var(--ink-900); }
.ln-doors .psb-tile b { margin-top: 6px; font-size: var(--fs-body-s); }

.ln-course { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 8fr); gap: 48px; align-items: start; }
.ln-lessons { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ln-lessons a { display: grid; grid-template-columns: 32px 1fr auto; gap: 12px; align-items: center; padding: 12px 18px; background: var(--bg-surface); border: var(--stroke); border-radius: 14px; color: var(--text-primary); text-decoration: none; font-size: 15px; }
.ln-lessons a:hover { box-shadow: var(--shadow-button); }
.ln-n { font: 500 13px/1 var(--font-mono); color: var(--accent); }
.ln-meta { font: 400 12px/1 var(--font-mono); color: var(--text-muted); white-space: nowrap; }

.ln-glbar { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; margin-bottom: 24px; }
.ln-glsearch { flex: 0 1 400px; display: flex; align-items: center; gap: 10px; padding: 10px 20px; border: var(--stroke); border-radius: var(--radius-pill); background: var(--bg-surface); color: var(--text-muted); }
.ln-glsearch:focus-within { outline: 3px solid var(--sky-600); outline-offset: 3px; }
.ln-glsearch input { flex: 1; min-width: 0; border: 0; background: none; color: var(--text-primary); font: 400 16px/1.4 var(--font-body); }
.ln-glsearch input:focus { outline: none; }
.ln .psb-az { gap: 0; }
.ln .psb-az a, .ln .psb-az span { min-width: 26px; padding: 6px 4px; font-size: 15px; }
.ln .psb-az span { color: var(--text-muted); opacity: .45; }
.ln .psb-az a:hover { color: var(--accent); }
.ln .psb-az a.is-off { color: var(--text-muted); opacity: .45; cursor: default; }

.ln-term { display: grid; gap: 8px; align-content: start; padding: 20px 22px; background: var(--bg-surface); border: var(--stroke); border-radius: var(--radius-row); color: var(--text-primary); }
.ln-term h3 { font-size: 22px; }
.ln-term p:not(.psb-note) { font-size: var(--fs-body-s); color: var(--text-secondary); }
.ln-term .psb-note a { color: inherit; }
.ln-term:target { box-shadow: var(--shadow-row); border-color: var(--accent); }
.ln-art__h { font: 700 20px/1.3 var(--font-body) !important; }

/* glossary page */
.gl-count { margin: -8px 0 20px !important; }
.gl-results { display: grid; gap: 40px; }
.gl-group { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 24px; align-items: start; scroll-margin-top: 110px; }
.gl-letter { font-size: 56px !important; line-height: 1 !important; color: var(--accent); position: sticky; top: 100px; }
.gl-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.gl .ln-term { scroll-margin-top: 110px; }
.gl-empty { max-width: 640px; }
.gl-empty__h { font-size: var(--fs-h3) !important; }

@media (max-width: 1100px) { .gl-list { grid-template-columns: 1fr 1fr; } }
@media (max-width: 900px) {
  .ln-course { grid-template-columns: 1fr; gap: 28px; }
  .gl-group { grid-template-columns: 1fr; gap: 12px; }
  .gl-letter { position: static; font-size: 40px !important; }
}
@media (max-width: 600px) {
  .gl-list { grid-template-columns: 1fr; }
  .ln-glsearch { flex-basis: 100%; }
  .ln-lessons a { grid-template-columns: 28px 1fr; }
  .ln-meta { grid-column: 2; }
}
.ln .psb-article { color: var(--text-primary); }
@media (max-width: 600px) { main .psb-sechead { flex-direction: column; align-items: flex-start; gap: 12px; } }