This is a landing page idea.
Create the content for the site's index.html here
then copy this from output/pages/Home.html to /index.html
cp output/ken/pages/home.html output/ken/index.html
It should also be possible to mimic the server directory structure by creating /ken/
then moving output/* to /ken/.
but this breaks links in the generated .html

or simpler, set OUTPUT_PATH = 'output/ken/'
but 'output/' and 'output/ken/' don't generate the same pages.
there seems to be css issues which are probably in the theme code...
The real issue appears to be SITEURL and how that affects links.