feat:增加加载中显示

lib/widget/blog.dart

@@ -267,6 +267,56 @@ Widget buildBlogListItem(BuildContext context, Blog blog, int index) {
   );
 }
 
+Widget buildStatsCard({
+  required BuildContext context,
+  required String title,
+  required int count,
+  required String unit,
+}) {
+  return buildCard(
+    context: context,
+    child: Column(
+      mainAxisAlignment: MainAxisAlignment.center,
+      crossAxisAlignment: CrossAxisAlignment.center,
+      children: [
+        Text(
+          title,
+          style: TextStyle(
+            fontSize: 16,
+            color: Colors.grey.shade600,
+            fontWeight: FontWeight.w500,
+          ),
+        ),
+        const SizedBox(height: 12),
+        Row(
+          mainAxisAlignment: MainAxisAlignment.center,
+          crossAxisAlignment: CrossAxisAlignment.end,
+          children: [
+            Text(
+              count.toString(),
+              style: const TextStyle(
+                fontSize: 28,
+                fontWeight: FontWeight.bold,
+                color: Colors.black87,
+                height: 1.0,
+              ),
+            ),
+            const SizedBox(width: 4),
+            Text(
+              unit,
+              style: TextStyle(
+                fontSize: 14,
+                color: Colors.grey.shade600,
+                fontWeight: FontWeight.w500,
+              ),
+            ),
+          ],
+        ),
+      ],
+    ),
+  );
+}
+
 void navigatorToBlogDetail(BuildContext context, int blogId) {
   Navigator.push(
     context,