diff --git a/TouchVueThree/src/assets/styles/mixins.scss b/TouchVueThree/src/assets/styles/mixins.scss
index 11c34c6..5d9480b 100644
--- a/TouchVueThree/src/assets/styles/mixins.scss
+++ b/TouchVueThree/src/assets/styles/mixins.scss
@@ -1,4 +1,5 @@
 // SCSS 混入（Mixins）
+@use 'sass:math';
 
 // ==================== 文本省略 ====================
 
@@ -66,7 +67,7 @@
 
   &::-webkit-scrollbar-thumb {
     background-color: $thumb-color;
-    border-radius: $width / 2;
+    border-radius: math.div($width, 2);
 
     &:hover {
       background-color: rgba(0, 0, 0, 0.3);