State building of topical style (7)
I believe the answer is:
capitol
'state building' is the definition.
The definition and answer can be both groups as well as being singular nouns.
Maybe there's a link between them I don't understand?
'topical style' is the wordplay.
'style' indicates an anagram (style can mean to shape or design).
'topical' with letters rearranged gives 'CAPITOL'.
'of' is the link.
Can you help me to learn more?
(Other definitions for capitol that I've seen before include "Statehouse" , "Washington building where USA Congress meets" , "government building" , "US Congress building" , "Hill of the US Congress" .)