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h2.catalog-category{font-family:var(--cs-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--cs-accent);margin:0 0 12px}.course-sidebar__subsec{border:1px solid var(--cs-line);border-radius:10px;background:#fff;margin:8px 4px;overflow:hidden}.course-sidebar__subsec-head{width:100%;display:flex;align-items:center;gap:8px;background:transparent;border:0;cursor:pointer;padding:10px 12px;text-align:left}.course-sidebar__subsec.is-open .course-sidebar__subsec-head{border-bottom:1px solid var(--cs-line)}.course-sidebar__subsec-name{flex:1;font-family:var(--cs-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--cs-accent)}.course-sidebar__subsec-count{font-family:var(--cs-mono);font-size:10px;color:var(--cs-muted);font-variant-numeric:tabular-nums}.course-sidebar__subsec-chev{font-family:var(--cs-mono);font-size:11px;color:var(--cs-muted);transition:transform .18s ease}.course-sidebar__subsec:not(.is-open) 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