Regional pairs, partner is good. You play forcing club system, and limited openings (your 1♣ starts at 17, or 16 with excellent suits).
1NT was semi forcing, 3♦ is a sign off in diamonds (akin to 1H-1NT-2C-2D auction). Partner is aggressive but does not stretch to respond to 1M, 1NT should be 7-11.
:)Yu
Benefits include:
Plus... it's free!