> The `Param` method on a `Page` object looks for the given `KEY` in page parameters, and returns the corresponding value. If it cannot find the `KEY `in page parameters, it looks for the `KEY` in site parameters. If it cannot find the `KEY` in either location, the Param method returns `nil`.
>
> See: https://gohugo.io/methods/page/param/
So `.Page.Param` is only suitable for simple types.