fix(wikiwand): system theme (catppuccin#1530)

Author: uncenter

styles/wikiwand/catppuccin.user.css

@@ -18,13 +18,22 @@
 @-moz-document domain("wikiwand.com") {
   @import url("https://python.catppuccin.com/pygments/catppuccin-variables.important.css");
 
-  .theme-system,
+  @media (prefers-color-scheme: light) {
+    .theme-system {
+      #catppuccin(@lightFlavor, @accentColor);
+    }
+  }
+  @media (prefers-color-scheme: dark) {
+    .theme-system {
+      #catppuccin(@darkFlavor, @accentColor);
+    }
+  }
+
   .theme-light,
   .theme-desert,
   .theme-calmness {
     #catppuccin(@lightFlavor, @accentColor);
   }
-  .theme-system,
   .theme-dark,
   .theme-black,
   .theme-deepOcean,