feat:更新图表模块

lib/widgets/stats/card.dart

@@ -0,0 +1,58 @@
+import 'package:flutter/material.dart';
+
+class StatisticCard extends StatelessWidget {
+  final IconData icon;
+  final Color color;
+  final String title;
+  final num value;
+  final String unit;
+
+  const StatisticCard({
+    super.key,
+    required this.icon,
+    required this.color,
+    required this.title,
+    required this.value,
+    required this.unit,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      color: Colors.white,
+      elevation: 0,
+      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
+      child: Padding(
+        padding: const EdgeInsets.all(10.0),
+        child: Row(
+          children: [
+            SizedBox(
+              width: 60,
+              height: 60,
+              child: Icon(icon, color: color, size: 42),
+            ),
+            const SizedBox(width: 16),
+            Column(
+              crossAxisAlignment: CrossAxisAlignment.center,
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                Text(title, style: TextStyle(fontSize: 20, color: color)),
+                const SizedBox(height: 4),
+                Row(
+                  children: [
+                    Text(
+                      value.toString(),
+                      style: TextStyle(fontSize: 20, color: color),
+                    ),
+                    const SizedBox(width: 5),
+                    Text(unit, style: TextStyle(fontSize: 20, color: color)),
+                  ],
+                ),
+              ],
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}