diff --git a/src/views/EventDetail/components/HistoricalEvents.js b/src/views/EventDetail/components/HistoricalEvents.js
index 366e163f..98745969 100644
--- a/src/views/EventDetail/components/HistoricalEvents.js
+++ b/src/views/EventDetail/components/HistoricalEvents.js
@@ -122,13 +122,20 @@ const HistoricalEvents = ({
     //     navigate(`/event-detail/${event.id}`);
     // };
 
-    // 获取重要性颜色
+    // 获取重要性颜色（用于 Badge）
     const getImportanceColor = (importance) => {
         if (importance >= 4) return 'red';
         if (importance >= 2) return 'orange';
         return 'green';
     };
 
+    // 获取重要性背景色（用于卡片背景）
+    const getImportanceBgColor = (importance) => {
+        if (importance >= 4) return 'rgba(239, 68, 68, 0.15)';  // 红色背景
+        if (importance >= 2) return 'rgba(245, 158, 11, 0.12)'; // 橙色背景
+        return 'rgba(34, 197, 94, 0.1)';  // 绿色背景
+    };
+
     // 获取相关度颜色（1-10）
     const getSimilarityColor = (similarity) => {
         if (similarity >= 8) return 'green';
@@ -240,27 +247,15 @@ const HistoricalEvents = ({
             <VStack spacing={3} align="stretch">
                 {events.map((event) => {
                     const importanceColor = getImportanceColor(event.importance);
+                    const importanceBgColor = getImportanceBgColor(event.importance);
 
                     return (
                         <Box
                             key={event.id}
-                            bg={cardBg}
+                            bg={importanceBgColor}
                             borderWidth="1px"
                             borderColor="gray.500"
                             borderRadius="lg"
-                            position="relative"
-                            overflow="visible"
-                            _before={{
-                                content: '""',
-                                position: 'absolute',
-                                top: 0,
-                                left: 0,
-                                right: 0,
-                                height: '3px',
-                                bgGradient: 'linear(to-r, blue.400, purple.500, pink.500)',
-                                borderTopLeftRadius: 'lg',
-                                borderTopRightRadius: 'lg',
-                            }}
                             transition="all 0.2s"
                         >
                             <VStack align="stretch" spacing={3} p={4}>