Adding a highlight/underline to header text in landing page hero


I’m building out a simple enough coaching website. I’m hoping to highlight or underline the word ‘right’ in the header ‘Build the right product for your business’. Instead of actually underlining the text, ideally I could use a bespoke illustration like this which would work dynamically across different device sizes

Any tips or suggestions please on the best way to achieve that?


Here is my site Read-Only: