⚡perf：未读邮件变色、加深

src/views/orders/components/MailBox.jsx

@@ -73,7 +73,7 @@ const MailBox = ({ mailboxDir, onMailItemClick, ...props }) => {
     const folderName = (item.showFolder) ? `[${item.FDir}] ` : ''
     const orderMailType = item.MAT_Name ? <span className='text-neutral-600 text-xs'>{item.MAT_Name}</span> : ''
     const countryName = isEmpty(item.CountryCN) ? '' : '[' + item.CountryCN + '] '
-    const mailStateClass = item.MOI_ReadState === 0 ? 'font-bold' : ''
+    const mailStateClass = item.MOI_ReadState === 0 ? 'font-black text-emerald-600' : ''
     const hasAtta = item.MAI_Attachment !== 0 ? <AttachmentIcon className='text-blue-500' /> : null
     return (
       <li