From ff3b24b50ecd9e44e5dd9b5cc263750077cc749b Mon Sep 17 00:00:00 2001
From: WrBug <iwrbug@gmail.com>
Date: Sat, 31 Jan 2026 20:58:13 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BC=98=E5=8C=96=E5=9B=9E=E6=B5=8B?=
 =?UTF-8?q?=E4=BA=A4=E6=98=93=E8=AE=B0=E5=BD=95=E6=98=BE=E7=A4=BA?=
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- 盈亏颜色逻辑：仅盈利(>0)显示绿色，亏损(<0)显示红色，持平(=0)无颜色
- 手续费显示：确保null值显示为 $0.00
- 遵守绿涨红跌原则
---
 frontend/src/pages/BacktestDetail.tsx | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/frontend/src/pages/BacktestDetail.tsx b/frontend/src/pages/BacktestDetail.tsx
index 5026ff2..f83504b 100644
--- a/frontend/src/pages/BacktestDetail.tsx
+++ b/frontend/src/pages/BacktestDetail.tsx
@@ -237,18 +237,23 @@ const BacktestDetail: React.FC = () => {
       dataIndex: 'fee',
       key: 'fee',
       width: 120,
-      render: (value: string) => formatUSDC(value)
+      render: (value: string) => formatUSDC(value || '0')
     },
     {
       title: t('backtest.profitLoss') + ' (USDC)',
       dataIndex: 'profitLoss',
       key: 'profitLoss',
       width: 120,
-      render: (value: string | null) => value ? (
-        <span style={{ color: parseFloat(value) >= 0 ? '#52c41a' : '#ff4d4f' }}>
-          {formatUSDC(value)}
-        </span>
-      ) : '-'
+      render: (value: string | null) => {
+        if (!value) return '-'
+        const num = parseFloat(value)
+        const color = num > 0 ? '#52c41a' : num < 0 ? '#ff4d4f' : undefined
+        return (
+          <span style={{ color }}>
+            {formatUSDC(value)}
+          </span>
+        )
+      }
     },
     {
       title: t('backtest.balanceAfter') + ' (USDC)',