- Replace the Yokosawa ranges with the 6-max opening ranges (UTG, HJ, CO,
SB, BTN). Colors keep the old order: navy (strong UTG), red UTG, yellow
HJ, green CO, blue SB, white BTN. SB is narrower than BTN, so blue sits
one tier above white; the purple-frame category is gone.
- Show the "BTN vs CO open" chart on the range page as frames: light blue
for 3bet, yellow for call.
- Grade BTN facing an unlimped CO open by those frames in reviews; other
spots keep the color-tier rule (BB defends down to green).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>