fix(ui): 对齐首页样式到 Pencil 设计规范

- Asset Card: padding 20px (was 24px)
- 充值按钮: cornerRadius 6px, padding [5,10], icon 13px, text 12px
- Quick Actions: 边框颜色 Light #E2E8F0, Dark #1E293B
- Quick Action Icons: 背景色 Light #F3F4F6, Dark #1E293B
- Quick Action Icons: 图标色 Light #4B5563
- cornerRadius: -lg (14px) for cards

flutter_monisuo/lib/ui/pages/home/quick_actions_row.dart

@@ -21,16 +21,27 @@ class QuickActionsRow extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final colorScheme = Theme.of(context).colorScheme;
+    final isDark = colorScheme.brightness == Brightness.dark;
+    
+    // Light: #FFFFFF, Dark: #0F172A
+    final containerBg = isDark
+        ? const Color(0xFF0F172A)
+        : const Color(0xFFFFFFFF);
+    
+    // Light: #E2E8F0, Dark: #1E293B
+    final borderColor = isDark
+        ? const Color(0xFF1E293B)
+        : const Color(0xFFE2E8F0);
 
     return Container(
       padding: const EdgeInsets.symmetric(vertical: AppSpacing.md, horizontal: AppSpacing.sm),
       decoration: BoxDecoration(
-        color: colorScheme.surfaceContainer,
+        color: containerBg,
         border: Border.all(
-          color: colorScheme.outlineVariant,
+          color: borderColor,
           width: 1,
         ),
-        borderRadius: BorderRadius.circular(AppRadius.xl),
+        borderRadius: BorderRadius.circular(AppRadius.lg),
       ),
       child: Row(
         mainAxisAlignment: MainAxisAlignment.spaceAround,
@@ -80,6 +91,17 @@ class _ActionItem extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    // Light: #F3F4F6, Dark: #1E293B
+    final isDark = colorScheme.brightness == Brightness.dark;
+    final iconBgColor = isDark 
+        ? const Color(0xFF1E293B) 
+        : const Color(0xFFF3F4F6);
+    
+    // Light: #4B5563, Dark: 根据主题
+    final iconColor = isDark
+        ? colorScheme.onSurfaceVariant
+        : const Color(0xFF4B5563);
+
     return GestureDetector(
       onTap: onTap,
       behavior: HitTestBehavior.opaque,
@@ -90,14 +112,14 @@ class _ActionItem extends StatelessWidget {
             width: 40,
             height: 40,
             decoration: BoxDecoration(
-              color: colorScheme.surfaceContainerHigh,
+              color: iconBgColor,
               borderRadius: BorderRadius.circular(AppRadius.md),
             ),
             alignment: Alignment.center,
             child: Icon(
               icon,
               size: 18,
-              color: colorScheme.onSurfaceVariant,
+              color: iconColor,
             ),
           ),
           const SizedBox(height: AppSpacing.xs + 2),