It completely gets the style of the original designs.
One of the things I enjoyed about Exeter was that there was always this walking-the-line between being authentic to TOS and to improvising in all kinds of ways with props, costuming and so forth. We expanded upon the TOS "universe" in little ways, pretty much sticking to what we could have used for reference in the 1960s and pre-TMP 1970s.
The Kongo is based on a fan ship design which is itself based on Franz Joseph's version of the Constitution class. That places some of the design cues later than our "envelope" but only a little.