sync working code, and import type-doc

lib/ui/css/variables/definition.scss

@@ -13,6 +13,7 @@
     /*color-scheme: light dark;*/
 
     --color: #201f1e;
+    --secondary-color: #777;
     --bg-color: #fff;
     --border-color: #b9b9b9;
     --focus-border-color: #666;