style(Divider): 调整分割线的透明度

- 将分割线的透明度从 38% 调整为 18%
- 此修改旨在提升分割线的视觉效果和一致性

src/components/Divider.tsx

@@ -20,7 +20,7 @@ const Divider: Component<DividerProps> = (props) => {
       class={cx(
         'border-solid',
         mProps.direction === 'horizontal' ? 'w-full border-t' : 'h-full border-l',
-        mProps.faded ? 'border-outline/38' : 'border-outline',
+        mProps.faded ? 'border-outline/18' : 'border-outline',
       )}
     />
   );