fix(StockCompareModal): 修复对比图表图例颜色模糊问题

- chartOptions.ts: 完善 getCompareBarChartOption 黑金主题配置
- 添加 legend.textStyle.color 使图例文字清晰可见
- 添加 tooltip、axisLine、splitLine 等主题颜色配置

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

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

src/views/Company/components/FinancialPanorama/utils/chartOptions.ts

@@ -308,7 +308,7 @@ export const getMainBusinessPieOption = (
 };
 
 /**
- * 生成对比柱状图配置
+ * 生成对比柱状图配置 - 黑金主题
  * @param title 标题
  * @param stockName1 股票1名称
  * @param stockName2 股票2名称
@@ -326,13 +326,50 @@ export const getCompareBarChartOption = (
   data2: (number | undefined)[]
 ) => {
   return {
-    tooltip: { trigger: 'axis' },
-    legend: { data: [stockName1, stockName2] },
+    backgroundColor: 'transparent',
+    tooltip: {
+      trigger: 'axis',
+      backgroundColor: chartTheme.tooltip.bg,
+      borderColor: chartTheme.tooltip.border,
+      textStyle: {
+        color: '#E2E8F0',
+      },
+    },
+    legend: {
+      data: [stockName1, stockName2],
+      textStyle: {
+        color: '#E2E8F0',
+      },
+    },
     xAxis: {
       type: 'category',
       data: categories,
+      axisLine: {
+        lineStyle: {
+          color: chartTheme.axisLine,
+        },
+      },
+      axisLabel: {
+        color: '#A0AEC0',
+      },
+    },
+    yAxis: {
+      type: 'value',
+      axisLabel: {
+        formatter: '{value}%',
+        color: '#A0AEC0',
+      },
+      axisLine: {
+        lineStyle: {
+          color: chartTheme.axisLine,
+        },
+      },
+      splitLine: {
+        lineStyle: {
+          color: chartTheme.splitLine,
+        },
+      },
     },
-    yAxis: { type: 'value', axisLabel: { formatter: '{value}%' } },
     series: [
       {
         name: stockName1,