feat: 优化足迹总结与自身消息强度分析

src/pages/AnalyticsPage.scss

@@ -184,6 +184,31 @@
     color: var(--text-primary);
     margin: 0 0 12px;
   }
+
+  .chart-title-row {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 12px;
+    margin: 0 0 12px;
+
+    h3 {
+      margin: 0;
+    }
+
+    span {
+      font-size: 12px;
+      color: var(--text-tertiary);
+      white-space: nowrap;
+    }
+  }
+
+  .chart-note {
+    margin: -4px 0 10px;
+    font-size: 12px;
+    line-height: 1.6;
+    color: var(--text-tertiary);
+  }
 }
 
 // Rankings