feat: 🎸 重构layout-classic布局

src/styles/variables.less

@@ -1,25 +1,17 @@
 // Silder
 @menuText: #bfcbd9;
-@menuActiveText: #409EFF;
+@menuActiveText: #fff;
 @menuActiveBg: #2d8cf0;
 
 @menuBg: #001529;
 
 @subMenuBg: #1f2d3d;
-@subMenuHover: #1f2d3d;
+@subMenuHover: #2d8cf0;
 @subMenuActiveText: #fff;
 
 @menuWidth: 200px;
 @menuMinWidth: 64px;
 
-@menuLightActiveText: #1890ff;
-@menuLightActiveBg: #e6f7ff;
-
-@menuDarkActiveText: #fff;
-@menuDarkActiveBg: #1890ff;
-
-@menuLightBg: #fff;
-
 // topSilder
 @topSilderHeight: 50px;