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/views/Company/components/CompanyOverview/DeepAnalysisTab/atoms/BusinessTreeItem.tsx

@@ -3,6 +3,7 @@
  *
  * 递归显示业务结构层级
  * 使用位置：业务结构分析卡片
+ * 黑金主题风格
  */
 
 import React from 'react';
@@ -10,9 +11,17 @@ import { Box, HStack, VStack, Text, Badge, Tag, TagLabel } from '@chakra-ui/reac
 import { formatPercentage, formatBusinessRevenue } from '@utils/priceFormatters';
 import type { BusinessTreeItemProps } from '../types';
 
-const BusinessTreeItem: React.FC<BusinessTreeItemProps> = ({ business, depth = 0 }) => {
-  const bgColor = 'gray.50';
+// 黑金主题配置
+const THEME = {
+  bg: 'gray.700',
+  gold: '#D4AF37',
+  goldLight: '#F0D78C',
+  textPrimary: '#D4AF37',
+  textSecondary: 'gray.400',
+  border: 'rgba(212, 175, 55, 0.5)',
+};
 
+const BusinessTreeItem: React.FC<BusinessTreeItemProps> = ({ business, depth = 0 }) => {
   // 获取营收显示
   const getRevenueDisplay = (): string => {
     const revenue = business.revenue || business.financial_metrics?.revenue;
@@ -27,40 +36,39 @@ const BusinessTreeItem: React.FC<BusinessTreeItemProps> = ({ business, depth = 0
     <Box
       ml={depth * 6}
       p={3}
-      bg={bgColor}
+      bg={THEME.bg}
       borderLeft={depth > 0 ? '4px solid' : 'none'}
-      borderLeftColor="blue.400"
+      borderLeftColor={THEME.gold}
       borderRadius="md"
       mb={2}
-      _hover={{ shadow: 'md' }}
+      _hover={{ shadow: 'md', bg: 'gray.600' }}
       transition="all 0.2s"
     >
       <HStack justify="space-between">
         <VStack align="start" spacing={1}>
           <HStack>
-            <Text fontWeight="bold" fontSize={depth === 0 ? 'md' : 'sm'}>
+            <Text fontWeight="bold" fontSize={depth === 0 ? 'md' : 'sm'} color={THEME.textPrimary}>
               {business.business_name}
             </Text>
             {business.financial_metrics?.revenue_ratio &&
               business.financial_metrics.revenue_ratio > 30 && (
-                <Badge colorScheme="purple" size="sm">
+                <Badge bg={THEME.gold} color="gray.900" size="sm">
                   核心业务
                 </Badge>
               )}
           </HStack>
           <HStack spacing={4} flexWrap="wrap">
-            <Tag size="sm" variant="subtle">
+            <Tag size="sm" bg="gray.600" color={THEME.textPrimary}>
               营收占比: {formatPercentage(business.financial_metrics?.revenue_ratio)}
             </Tag>
-            <Tag size="sm" variant="subtle">
+            <Tag size="sm" bg="gray.600" color={THEME.textPrimary}>
               毛利率: {formatPercentage(business.financial_metrics?.gross_margin)}
             </Tag>
             {business.growth_metrics?.revenue_growth !== undefined && (
               <Tag
                 size="sm"
-                colorScheme={
-                  business.growth_metrics.revenue_growth > 0 ? 'red' : 'green'
-                }
+                bg={business.growth_metrics.revenue_growth > 0 ? 'red.600' : 'green.600'}
+                color="white"
               >
                 <TagLabel>
                   增长: {business.growth_metrics.revenue_growth > 0 ? '+' : ''}
@@ -71,10 +79,10 @@ const BusinessTreeItem: React.FC<BusinessTreeItemProps> = ({ business, depth = 0
           </HStack>
         </VStack>
         <VStack align="end" spacing={0}>
-          <Text fontSize="lg" fontWeight="bold" color="blue.500">
+          <Text fontSize="lg" fontWeight="bold" color={THEME.gold}>
             {getRevenueDisplay()}
           </Text>
-          <Text fontSize="xs" color="gray.500">
+          <Text fontSize="xs" color={THEME.textSecondary}>
             营业收入
           </Text>
         </VStack>