优化设置界面折叠项的显示效果

src/setting.scss

@@ -1,5 +1,18 @@
 // Made by Luting ^-^
 // 设置左边栏(包含 Actions 的工作流栏)
+
+
+%active-item-after-style {
+  background: #1f6feb;
+  border-radius: 0.375rem;
+  content: '';
+  height: 1.8rem;
+  left: calc(0.5rem * -1);
+  position: absolute;
+  top: calc(50% - 13px);
+  width: 0.25rem;
+}
+
 .ui.vertical.menu {
   background: var(--color-body);
   border: 0;
@@ -30,14 +43,25 @@
   }
 
   .active.item:after {
-    background: #1f6feb;
-    border-radius: 0.375rem;
-    content: '';
-    height: 1.8rem;
-    left: calc(0.5rem * -1);
-    position: absolute;
-    top: calc(50% - 13px);
-    width: 0.25rem;
+    @extend %active-item-after-style;
+  }
+
+  details {
+    &:has(.active.item) {
+      background: #161a21;
+
+      &[open] {
+        background: unset;
+
+        &:after {
+          display: none;
+        }
+      }
+
+      &:after {
+        @extend %active-item-after-style;
+      }
+    }
   }
 }