Create a cinematic summer-night scene of a temporary open-air movie gathering in a quiet valley just before the screening begins. A plain white projection screen stands on a gentle grassy slope while small groups of adult visitors settle into loosely arranged canvas chairs and picnic blankets. Place a compact projection booth and warm string lights to one side, with layered mountain ridges fading into deep blue twilight. Use a landscape 4:3 slightly elevated rear 28mm view; a narrow grass path leads through the audience toward the screen, balanced by a few fireflies on the left and a modest food stall on the right. The screen reflects only soft blank white light. Render summer grass, canvas, timber poles, faint mist, and restrained warm-cool color contrast. Adults only; no movie imagery, readable signs, logos, watermark, child close-ups, dense crowd, modern skyline, or fantasy architecture.