Great work miran! Your Asciidoctor css layout looks nice. I was never fully satisfied with the default Asciidoctor style, and also liked the Asciidoctor Stylesheet Factory themes not really. So I tried tuning them a bit, but was not too successful.
It seems you tuned CSS for html, pdf and even the CSS for code listings successful. Looks all nice. I think Dom's book was also written with Asciidoctor, and the initial draft was looking good in ebub and pdf version, but unfortunately Manning made it uglier in the final release, so I newer read the final version.
