Promise by midnight, not someday
Every checkout slot is tied to a live cut-off, route capacity, and dawn handoff window.
Warehouse rhythm beats traffic
Picking waves move by minute, so the truck leaves before the city starts moving.
Dense cards make buying faster
Price, membership, stock, and arrival time sit in one scan path for Hangul-first shoppers.
Arrival proof closes the loop
Door-photo proof turns the red promise green before breakfast.