Pastel drawing with powdery chalk texture in strict duotone of deep indigo shadow and warm apricot highlight, Memphis Design geometry: a rooftop garden of stacked ledgers rising like terrace steps, traders in chunky angular silhouettes tending rows of budding charts that sprout as squiggle-line saplings and confetti-patterned leaves, twilight glow gradient wash behind, soft blended strokes, quiet romantic in-between mood, bold poster composition