fix(ui): 优化我的页面待领取和已过期区域布局

待领取区域：
- 改为竖排布局：待领取 00:00:00 / 绿积分：/ 贡献值：
- 第一行加粗，后两行正常粗细

已过期区域：
- '已过期 (绿积分)' → '绿积分：'
- '已过期 (贡献值)' → '贡献值：'

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mobile-app/lib/features/profile/presentation/pages/profile_page.dart

@@ -1723,48 +1723,45 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: [
-        // 汇总信息区域
+        // 汇总信息区域 - 竖排布局
-        Row(
+        Column(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
-            // 倒计时
+            // 待领取倒计时
-            Expanded(
+            Row(
-              child: Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 const Text(
-                    '24小时倒计时',
+                  '待领取',
                   style: TextStyle(
-                      fontSize: 12,
+                    fontSize: 14,
                     fontFamily: 'Inter',
-                      fontWeight: FontWeight.w500,
+                    fontWeight: FontWeight.w700,
                     height: 1.5,
-                      color: Color(0xCC5D4037),
+                    color: Color(0xFF5D4037),
                   ),
                 ),
+                const SizedBox(width: 8),
                 Text(
                   _formatCountdown(),
                   style: const TextStyle(
                     fontSize: 14,
                     fontFamily: 'Consolas',
                     fontWeight: FontWeight.w700,
-                      height: 1.25,
+                    height: 1.5,
                     letterSpacing: 0.7,
                     color: Color(0xFFD4AF37),
                   ),
                 ),
               ],
             ),
-            ),
+            const SizedBox(height: 8),
-            // 汇总待领取 USDT
+            // 绿积分
-            Expanded(
+            Row(
-              child: Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 const Text(
-                    '待领取 (绿积分)',
+                  '绿积分：',
                   style: TextStyle(
-                      fontSize: 12,
+                    fontSize: 14,
                     fontFamily: 'Inter',
                     fontWeight: FontWeight.w500,
                     height: 1.5,
@@ -1776,23 +1773,21 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
                   style: const TextStyle(
                     fontSize: 16,
                     fontFamily: 'Inter',
-                      fontWeight: FontWeight.w700,
+                    fontWeight: FontWeight.w500,
                     height: 1.25,
                     color: Color(0xFF5D4037),
                   ),
                 ),
               ],
             ),
-            ),
+            const SizedBox(height: 4),
-            // 汇总待领取算力
+            // 贡献值
-            Expanded(
+            Row(
-              child: Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 const Text(
-                    '待领取 (贡献值)',
+                  '贡献值：',
                   style: TextStyle(
-                      fontSize: 12,
+                    fontSize: 14,
                     fontFamily: 'Inter',
                     fontWeight: FontWeight.w500,
                     height: 1.5,
@@ -1804,14 +1799,13 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
                   style: const TextStyle(
                     fontSize: 16,
                     fontFamily: 'Inter',
-                      fontWeight: FontWeight.w700,
+                    fontWeight: FontWeight.w500,
                     height: 1.25,
                     color: Color(0xFF5D4037),
                   ),
                 ),
               ],
             ),
-            ),
           ],
         ),
         // 待领取奖励列表 - 使用堆叠卡片展示
@@ -2433,7 +2427,7 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
             crossAxisAlignment: CrossAxisAlignment.start,
             children: [
               const Text(
-                '已过期 (绿积分)',
+                '绿积分：',
                 style: TextStyle(
                   fontSize: 14,
                   fontFamily: 'Inter',
@@ -2460,7 +2454,7 @@ class _ProfilePageState extends ConsumerState<ProfilePage> {
             crossAxisAlignment: CrossAxisAlignment.start,
             children: [
               const Text(
-                '已过期 (贡献值)',
+                '贡献值：',
                 style: TextStyle(
                   fontSize: 14,
                   fontFamily: 'Inter',