/* ========== Desktop grid with floating sidebar ========== */
@media (min-width: 992px) {
  /* Desktop: 4/8 split (sidebar/main) */
  .lb-grid { display: grid; grid-template-columns: 4fr 8fr; gap: 1.25rem; }
  .lb-sidebar {
    position: sticky;
    top: 64px; /* adjust if your header is taller */
    align-self: start;
    max-height: calc(100vh - 72px);
    overflow: auto;
  }
  /* Hide top sticky tabs on desktop to avoid duplication */
  .lb-tabs { display: none !important; }
  .lb-main .section-anchor { scroll-margin-top: 72px; }
  .lb-sidebar .nav-link { border: 1px solid var(--lb-border); margin: 2px 8px; border-radius: .5rem; }
  .lb-sidebar .nav-link.active { color: var(--lb-accent); border-color: #3b4650; }
}
/* Keep mobile top sticky tabs */
@media (max-width: 991.98px) {
  .lb-main .section-anchor { scroll-margin-top: 112px; } /* header + tabs */
}