When I visited the link posted (http://danwang.co/), I found the site/theme to be quite elegant. In the footer, I found:

Proudly powered by WordPress | Theme: Manifest by Jim Barraud.

So I checked out Jim's site: http://jimbarraud.com/ and from there, went on to the WordPress theme repo to find that the theme has been retired and no longer available for download: https://wordpress.com/theme/manifest

Luckily, Jim has the theme up on github: https://github.com/jbarraud/Manifest so I downloaded it from there and tried to install it (via WP dashboard) but WordPress threw an error and aborted the installation. Manual (upload, extraction and) installation didn't work either.

Then I found Jim's post http://jimbarraud.com/2016/01/21/an-update-on-manifest/ followed by several comments requesting an updated/working version of the theme but apparently Jim is not able to work on this presently.

Looking at the huge popularity (200k+ downloads, 20th most popular theme on WordPress repo according to Jim) and continuing demand for the theme, I thought of fixing it.

Turns out, there is just one line of (commented) code that needs to be added to the style.css file of the theme, and its good to go:

/* Theme Name: Manifest */

I have now made a working version of the theme available for download:

http://webpub.online/download-manifest-theme/

I think the WordPress community should thank HN for causing this revival. :-)