style: 移除 Tab 导航和卡片内部左右 padding

- TabNavigation/SubTabContainer: 移除左侧 padding (pl=0)
- BusinessStructureCard/BusinessSegmentsCard: 移除 CardBody 左右 padding
- BusinessTreeItem: 黑金主题样式优化

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

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

src/components/TabContainer/TabNavigation.tsx

@@ -20,7 +20,8 @@ const TabNavigation: React.FC<TabNavigationProps> = ({
       borderColor={themeColors.dividerColor}
       borderTopLeftRadius={borderRadius}
       borderTopRightRadius={borderRadius}
-      px={4}
+      pl={0}
+      pr={4}
       py={2}
       flexWrap="wrap"
       gap={2}