28a] Latin parent showing stress? [5] I?A?I.
3d] Somewhere to build computer systems in Kent. [4] S?T?. [Is it site?]
14d] Gait's partly distorted when climbing. [4] ?R?T.
As answered before, no wordplay for italic but a double definition - Italic is the name of the language group to which Latin belongs. And Italic type is used for emphasis/stress.