Stack Fan Out

Five 220×150 cards sit in one stack (slightly offset) → fan open in 0.7s to −24°…+24° around an arc centre R=520 below the stack → hold 0.8s → flatten in 0.6s into one row of five equal cards (150 wide, 16 gaps, row centred, rotation zeroed) → exit together — "this pile" becomes "these five"