diff --git a/frontend/dashboard.html b/frontend/dashboard.html
index 9e64590..b5e796c 100644
--- a/frontend/dashboard.html
+++ b/frontend/dashboard.html
@@ -154,9 +154,9 @@
       grid-template-columns: repeat(3, 1fr);
       gap: 22px;
       margin-bottom: 22px;
-      align-items: start;
+      align-items: stretch;
     }
-    .bottom-grid > * { margin-bottom: 0; }
+    .bottom-grid > * { margin-bottom: 0; height: 100%; }
 
     .qa-btn {
       display: flex; align-items: center; gap: 8px;
@@ -3309,10 +3309,10 @@
 
     /* ══ WIDGET: Activity heatmap (redesigned) ══════════════════════════ */
     function loadActivityWidget(rows) {
-      _activityRows = rows;
+      _activityRows = rows || [];
       const w = document.getElementById('w-activity');
-      if (!w || !rows || !rows.length) { if (w) w.style.display = 'none'; return; }
-      w.style.display = '';
+      if (!w) return;
+      showWidget('w-activity');   // показываем всегда (пустое состояние рисует renderHeatmap)
       renderHeatmap();
     }
 
@@ -4061,7 +4061,7 @@
         loadActivityWidget(rows);
         loadSubjProgressWidget(rows);
         renderStreakCalendar(rows);
-      } catch {}
+      } catch { loadActivityWidget([]); }
       const heroRow = document.getElementById('hero-row');
       if (heroRow) heroRow.style.display = '';
       loadContinueWidget();