50% candle-range level with close-based entries and flips. The reference bar (default 09:15 IST) midpoint — (high + low) / 2 — is the line. Go long at the candle close when close is above it, short at the close when below. Trade only on days when prior-day daily RSI(12) is above 70 or below 30. If an open leg later closes on the wrong side, add the opposite at 2× quantity at that close. All legs exit at session end (15:15).