✅ fix: 修复订单详情页布局间距问题

- 调整.order-content的margin-top从-20rpx改为-30rpx
- 改善顶部状态栏与内容区域的视觉连续性
- 验证订单详情页测试通过

🤖 Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

mini/src/pages/order-detail/index.css

@@ -52,7 +52,7 @@
 /* 内容区域 */
 .order-content {
   padding: 32rpx;
-  margin-top: -20rpx;
+  margin-top: -30rpx;
 }
 
 .order-section {