perf(StrategyAnalysisCard): 渲染优化与黑金 UI

- 渲染优化: React.memo, useMemo, 样式常量提取
- 子组件拆分: EmptyState, ContentItem
- 黑金 UI: 金色标题、白色内容文字、空状态金色虚线边框

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

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

src/views/Company/components/CompanyOverview/DeepAnalysisTab/components/StrategyAnalysisCard.tsx

@@ -25,8 +25,6 @@ import type { Strategy } from '../types';
 // 样式常量 - 避免每次渲染创建新对象
 const CARD_STYLES = {
   bg: 'transparent',
-  border: '1px solid',
-  borderColor: 'yellow.600',
   shadow: 'md',
 } as const;
 
@@ -48,6 +46,7 @@ const GRID_RESPONSIVE_COLSPAN = { base: 2, md: 1 } as const;
 
 interface StrategyAnalysisCardProps {
   strategy: Strategy;
+  cardBg?: string;
 }
 
 // 空状态组件 - 独立 memo 避免重复渲染
@@ -74,15 +73,13 @@ interface ContentItemProps {
 }
 
 const ContentItem = memo<ContentItemProps>(({ title, content }) => (
-  <VStack align="stretch" spacing={3}>
+  <VStack align="stretch" spacing={2}>
     <Text fontWeight="bold" fontSize="sm" color="yellow.500">
       {title}
     </Text>
-    <Box {...CONTENT_BOX_STYLES}>
     <Text fontSize="sm" color="white">
       {content}
     </Text>
-    </Box>
   </VStack>
 ));
 
@@ -101,13 +98,14 @@ const StrategyAnalysisCard: React.FC<StrategyAnalysisCardProps> = memo(
         <CardHeader>
           <HStack>
             <Icon as={FaRocket} color="yellow.500" />
-            <Heading size="sm">战略分析</Heading>
+            <Heading size="sm" color="yellow.500">战略分析</Heading>
           </HStack>
         </CardHeader>
         <CardBody>
           {!hasData ? (
             <EmptyState />
           ) : (
+            <Box {...CONTENT_BOX_STYLES}>
               <Grid templateColumns="repeat(2, 1fr)" gap={6}>
                 <GridItem colSpan={GRID_RESPONSIVE_COLSPAN}>
                   <ContentItem
@@ -122,6 +120,7 @@ const StrategyAnalysisCard: React.FC<StrategyAnalysisCardProps> = memo(
                   />
                 </GridItem>
               </Grid>
+            </Box>
           )}
         </CardBody>
       </Card>