Other commenters have mentioned BeeLine Reader as a way to achieve the same visual tracking benefit that you aim to achieve with right-alignment.
I'm the founder of BeeLine Reader and wanted to mention that we have a JS widget and I'd be happy to provide it to any HNer for free. Over the years, several HNers have put our tech on their websites (examples here [1]), and we've even worked with a YC company (Insight Browser [2]).
Feel free to contact me (info in profile) if you're interested in trying out BeeLine Reader on your website.
I'm the founder of BeeLine Reader and wanted to mention that we have a JS widget and I'd be happy to provide it to any HNer for free. Over the years, several HNers have put our tech on their websites (examples here [1]), and we've even worked with a YC company (Insight Browser [2]).
Feel free to contact me (info in profile) if you're interested in trying out BeeLine Reader on your website.
1: https://thegradient.pub/has-ai-found-a-new-foundation/ https://wildcardpeople.com/what-is-a-wildcard-person https://jaack.me/cleanmymac-x/
2: https://insightbrowser.com/collections/reading