更新皮肤分类功能，添加帮助页面和Yggdrasil教程

src/components/ui/card.tsx

@@ -7,7 +7,7 @@ function Card({ className, ...props }: React.ComponentProps<"div">) {
     <div
       data-slot="card"
       className={cn(
-        "bg-card text-card-foreground flex flex-col gap-6 rounded-xl border py-6 shadow-sm",
+        "bg-card text-card-foreground flex flex-col gap-6 rounded-xl border border-gray-200 dark:border-gray-700 py-6 shadow-lg relative transition-all duration-300 hover:-translate-y-1 hover:shadow-xl",
         className
       )}
       {...props}