修复ScreenUtil 在某些安卓设备上计算异常，导致所有使用 .w 和 .h 的尺寸都变成 0 或极小值，导致界面不显示

(cherry picked from commit 73af298aebafc2e13668d645d461b99786b0c1e2)

lib/app/modules/kr_home/widgets/kr_subscription_card.dart

@@ -29,47 +29,45 @@ class KRSubscriptionCard extends StatelessWidget {
     print('🎴 [SubscriptionCard] 卡片颜色: ${Theme.of(context).cardColor}');
     print('🎴 [SubscriptionCard] 主题亮度: ${Theme.of(context).brightness}');
     print('🎴 [SubscriptionCard] 文本颜色: ${Theme.of(context).textTheme.bodyMedium?.color}');
-    print('🎴 [SubscriptionCard] ScreenUtil - 12.w=${12.w}, 16.h=${16.h}, 44.w=${44.w}');
+    print('🎴 [SubscriptionCard] ScreenUtil 测试 - 12.w=${12.w}, 16.h=${16.h}, 44.w=${44.w}');
 
-    // 🔧 关键修复：添加最小高度约束和调试边框
+    // 🔧 关键修复：完全移除 ScreenUtil，使用固定像素值避免缩放问题
     return Container(
-      // 添加最小高度，确保卡片可见
-      constraints: const BoxConstraints(minHeight: 180),
+      // 添加固定高度，确保卡片可见
+      constraints: const BoxConstraints(minHeight: 200),
+      padding: const EdgeInsets.all(16),
       decoration: BoxDecoration(
         color: Theme.of(context).cardColor,
-        borderRadius: BorderRadius.circular(12.w),
-        // 🔧 添加边框用于调试可见性
-        border: Border.all(
-          color: Colors.blue.withOpacity(0.3),
-          width: 2,
-        ),
+        borderRadius: BorderRadius.circular(12),
       ),
       child: Column(
         mainAxisSize: MainAxisSize.min,
         children: [
+          // 图标
           Container(
-            width: 44.w,
-            height: 44.w,
-            margin: EdgeInsets.only(top: 16.h),
+            width: 48,
+            height: 48,
             decoration: BoxDecoration(
               color: Colors.blue.withOpacity(0.1),
               shape: BoxShape.circle,
             ),
-            child: Icon(
+            child: const Icon(
               Icons.language,
               color: Colors.blue,
-              size: 26.w,
+              size: 28,
             ),
           ),
-          SizedBox(height: 12.h),
+          const SizedBox(height: 16),
+          // 描述文字
           Padding(
-            padding: EdgeInsets.symmetric(horizontal: 16.w),
+            padding: const EdgeInsets.symmetric(horizontal: 16),
             child: Text(
               AppTranslations.kr_home.subscriptionDescription,
               textAlign: TextAlign.center,
-              style: KrAppTextStyle(
-                fontSize: 14,
+              style: TextStyle(
+                fontSize: 15,
                 fontWeight: FontWeight.w400,
+                height: 1.5,
                 // 🔧 关键修复：确保文本颜色可见
                 color: Theme.of(context).brightness == Brightness.dark
                     ? Colors.white
@@ -77,28 +75,29 @@ class KRSubscriptionCard extends StatelessWidget {
               ),
             ),
           ),
-          SizedBox(height: 16.h),
-          Padding(
-            padding: EdgeInsets.fromLTRB(16.w, 0, 16.w, 16.h),
-            child: SizedBox(
-              width: double.infinity,
-              height: 42.h,
-              child: ElevatedButton(
-                onPressed: () => KRSubscribeNavigationUtil.navigateToPurchase(tag: 'SubscriptionCard'),
-                style: ElevatedButton.styleFrom(
-                  backgroundColor: Colors.blue,
-                  elevation: 0,
-                  shape: RoundedRectangleBorder(
-                    borderRadius: BorderRadius.circular(8.r),
-                  ),
+          const SizedBox(height: 20),
+          // 订阅按钮
+          SizedBox(
+            width: double.infinity,
+            height: 46,
+            child: ElevatedButton(
+              onPressed: () {
+                print('🎴 [SubscriptionCard] 订阅按钮被点击');
+                KRSubscribeNavigationUtil.navigateToPurchase(tag: 'SubscriptionCard');
+              },
+              style: ElevatedButton.styleFrom(
+                backgroundColor: Colors.blue,
+                elevation: 0,
+                shape: RoundedRectangleBorder(
+                  borderRadius: BorderRadius.circular(8),
                 ),
-                child: Text(
-                  AppTranslations.kr_home.subscribe,
-                  style: KrAppTextStyle(
-                    fontSize: 16,
-                    fontWeight: FontWeight.w500,
-                    color: Colors.white,
-                  ),
+              ),
+              child: Text(
+                AppTranslations.kr_home.subscribe,
+                style: const TextStyle(
+                  fontSize: 16,
+                  fontWeight: FontWeight.w500,
+                  color: Colors.white,
                 ),
               ),
             ),