In version 8.4*, I used my own css style and added the css asset in the account page controller. In version 8.5* that doesn't work anymore because the Account pages use site css. I also see that my package account css is loading before the concrete/css/account.css so all my styling is overridden.

How can I use my own styling for the Account pages I create in a package? Can I override the core account.css from my package only for the pages created by it?

Can I override the concrete/themes/concrete/account.php template from the package only for the pages created by it?