refactor: 移除暗色模式相关代码，使用固定浅色主题

- DeepAnalysisTab: 移除 useColorModeValue，使用固定颜色值
- NewsEventsTab: 移除 useColorModeValue，简化 hover 颜色
- FinancialPanorama: 移除 useColorMode/useColorModeValue
- MarketDataView: 移除 dark 主题配置，简化颜色逻辑
- StockQuoteCard: 移除 useColorModeValue，使用固定颜色

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

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

src/views/Company/components/FinancialPanorama/index.js

@@ -35,7 +35,6 @@ import {
   VStack,
   HStack,
   Divider,
-  useColorModeValue,
   Select,
   Button,
   Tooltip,
@@ -60,7 +59,6 @@ import {
   ButtonGroup,
   Stack,
   Collapse,
-  useColorMode,
 } from '@chakra-ui/react';
 import { 
   ChevronDownIcon, 
@@ -101,14 +99,13 @@ const FinancialPanorama = ({ stockCode: propStockCode }) => {
   const [modalContent, setModalContent] = useState(null);
   const [expandedRows, setExpandedRows] = useState({});
   const toast = useToast();
-  const { colorMode } = useColorMode();
-  
+
   // 颜色配置（中国市场：红涨绿跌）
-  const bgColor = useColorModeValue('white', 'gray.800');
-  const borderColor = useColorModeValue('gray.200', 'gray.600');
-  const hoverBg = useColorModeValue('gray.50', 'gray.700');
-  const positiveColor = useColorModeValue('red.500', 'red.400');  // 红涨
-  const negativeColor = useColorModeValue('green.500', 'green.400');  // 绿跌
+  const bgColor = 'white';
+  const borderColor = 'gray.200';
+  const hoverBg = 'gray.50';
+  const positiveColor = 'red.500';  // 红涨
+  const negativeColor = 'green.500';  // 绿跌
 
   // 加载所有财务数据
   const loadFinancialData = async () => {
@@ -492,7 +489,7 @@ const FinancialPanorama = ({ stockCode: propStockCode }) => {
           <React.Fragment key={section.key}>
             {section.title !== '资产总计' && section.title !== '负债合计' && (
               <Tr
-                bg={useColorModeValue('gray.50', 'gray.700')}
+                bg="gray.50"
                 cursor="pointer"
                 onClick={() => toggleSection(section.key)}
               >
@@ -515,7 +512,7 @@ const FinancialPanorama = ({ stockCode: propStockCode }) => {
                   key={metric.key}
                   _hover={{ bg: hoverBg, cursor: 'pointer' }}
                   onClick={() => showMetricChart(metric.name, metric.key, balanceSheet, metric.path)}
-                  bg={metric.isTotal ? useColorModeValue('blue.50', 'blue.900') : 'transparent'}
+                  bg={metric.isTotal ? 'blue.50' : 'transparent'}
                 >
                   <Td position="sticky" left={0} bg={bgColor} zIndex={1}>
                     <HStack spacing={2}>
@@ -733,7 +730,7 @@ const FinancialPanorama = ({ stockCode: propStockCode }) => {
     const renderSection = (section) => (
       <React.Fragment key={section.key}>
         <Tr
-          bg={useColorModeValue('gray.50', 'gray.700')}
+          bg="gray.50"
           cursor="pointer"
           onClick={() => toggleSection(section.key)}
         >
@@ -755,8 +752,8 @@ const FinancialPanorama = ({ stockCode: propStockCode }) => {
               key={metric.key}
               _hover={{ bg: hoverBg, cursor: 'pointer' }}
               onClick={() => showMetricChart(metric.name, metric.key, incomeStatement, metric.path)}
-              bg={metric.isTotal ? useColorModeValue('blue.50', 'blue.900') : 
-                  metric.isSubtotal ? useColorModeValue('orange.50', 'orange.900') : 'transparent'}
+              bg={metric.isTotal ? 'blue.50' :
+                  metric.isSubtotal ? 'orange.50' : 'transparent'}
             >
               <Td position="sticky" left={0} bg={bgColor} zIndex={1}>
                 <HStack spacing={2}>
@@ -1268,7 +1265,7 @@ const FinancialPanorama = ({ stockCode: propStockCode }) => {
                 { label: '资产负债率', value: financialMetrics[0].solvency?.asset_liability_ratio, format: 'percent' },
                 { label: '研发费用率', value: financialMetrics[0].expense_ratios?.rd_expense_ratio, format: 'percent' },
               ].map((item, idx) => (
-                <Box key={idx} p={3} borderRadius="md" bg={useColorModeValue('gray.50', 'gray.700')}>
+                <Box key={idx} p={3} borderRadius="md" bg="gray.50">
                   <Text fontSize="xs" color="gray.500">{item.label}</Text>
                   <Text fontSize="lg" fontWeight="bold">
                     {item.format === 'percent' ?