优化列表显示效果

src/App.vue

@@ -5,7 +5,7 @@ import VirtualList from './components/VirtualList.vue'
 const listConfig = {
   itemHeight: 50,
   itemPadding: 16,
-  bufferCount: 2,
+  bufferCount: 10,
   scrollDebounceTime: 16,
 }
 

src/components/VirtualList.vue

@@ -290,14 +290,14 @@ onBeforeUnmount(() => {
   padding: 8px 16px;
   display: flex;
   align-items: center;
-  border-bottom: 1px solid #e8e8e8;
-  transition: background-color 0.2s;
+  transition: background-color 0.8s ease;
   cursor: pointer;
   background-color: white;
 }
 
+/* 简单的选中高亮效果 */
 .list-item.selected {
-  background-color: #e6f7ff;
+  background-color: rgba(64, 169, 255, 0.15);
 }
 
 /* 默认列表项样式 */