Tight open, tighter continue. Against an MP 3-bet, most of the EP range simply folds and moves on.
The reference tier. 4-bet a tight value range, call with hands that flop well, fold the rest without ceremony.
You opened early and got 3-bet by the player right behind you — the most credible 3-bet in poker. Respect it.
Assumes a standard 3-bet; 4-bet to ~2.2–2.5x the 3-bet. Deep, favor calls over 4-bets — a 4-bet pot at 500bb+ commits you with range disadvantage.