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strong{color:var(--color-text-strong);font-size:inherit}.breadcrumb-separator{opacity:.36}.action-bar{border-radius:var(--radius-lg);background:var(--color-surface);border:1px solid var(--color-border);box-shadow:var(--shadow-xs);justify-content:space-between;align-items:center;gap:16px;padding:14px 20px;display:flex}.action-bar-copy h3{margin-bottom:6px}.action-bar-copy p{margin-bottom:0}.action-bar-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:12px;display:flex}.panel-error{color:var(--color-danger-strong);margin-bottom:16px;font-size:14px;font-weight:600}.stats-grid,.content-grid{gap:20px;display:grid}.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.dashboard-layout{grid-template-columns:minmax(0,1.45fr) minmax(320px,.85fr);align-items:start;gap:24px;display:grid}.dashboard-primary-stack,.dashboard-side-stack{gap:20px;display:grid}.dashboard-layout>*,.dashboard-split-grid>*{min-width:0}.dashboard-split-grid{grid-template-columns:minmax(0,1fr) 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table{border-collapse:separate;border-spacing:0;width:100%}.student-points-table-wrap thead{z-index:7;position:sticky;top:0}.student-points-table-wrap thead th{background:var(--color-surface-muted);z-index:8;box-shadow:0 1px 0 var(--color-border);color:var(--color-text-muted);text-transform:none;letter-spacing:0;white-space:nowrap;background-clip:padding-box;font-size:12px;font-weight:600;position:sticky;top:0}.student-points-table-wrap thead tr:first-child th:first-child{border-top-left-radius:var(--radius-md)}.student-points-table-wrap thead tr:first-child th:last-child{border-top-right-radius:var(--radius-md)}.video-list-table-wrap table{border-collapse:separate;border-spacing:0}.video-list-table-wrap thead th{background:var(--color-surface-muted);z-index:3;box-shadow:0 1px 0 var(--color-border);position:sticky;top:0}.video-list-table-wrap thead tr:first-child th:first-child{border-top-left-radius:var(--radius-md)}.video-list-table-wrap thead tr:first-child 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