style(PopupViews): 调整深色主题样式细节

- 修复了深色主题背景色重复定义问题，合并样式代码块
- 修改余额值颜色为 #eb7d13 提升视觉效果
- 移除无用的 flex: 1 属性，优化布局表现
- 设置 .ldc-container 相关元素在深色主题下的背景和字体颜色
- 统一进度条背景颜色，增强界面一致性

Author: anghunk

entrypoints/PopupViews/style.less

@@ -240,10 +240,6 @@ a {
   margin-top: 4px;
 }
 
-body[arco-theme='dark'] {
-  background: #4C5767;
-}
-
 /* LDC style*/
 .ldc-container {
 
@@ -295,7 +291,7 @@ body[arco-theme='dark'] {
     .balance-value {
       font-size: 16px;
       font-weight: 600;
-      color: #165dff;
+      color: #eb7d13;
     }
   }
 
@@ -313,7 +309,6 @@ body[arco-theme='dark'] {
   }
 
   .bar-wrapper {
-    flex: 1;
     height: 8px;
     background-color: #eee;
     border-radius: 10px;
@@ -357,4 +352,25 @@ body[arco-theme='dark'] {
     padding: 20px;
     font-size: 14px;
   }
+}
+
+body[arco-theme='dark'] {
+  background: #4C5767;
+
+  .ldc-container .ldc-box {
+    background: #303b4b;
+  }
+
+  .ldc-container .ldc-header .ldc-title {
+    color: #fff;
+  }
+
+  .ldc-container .bar-label,
+  .ldc-container .ldc-balance .balance-label {
+    color: #ccc;
+  }
+
+  .ldc-container .bar-wrapper {
+    background-color: #445267;
+  }
 }