Realistic candid photograph of a man and a woman having dinner at a small outdoor table at dusk, natural ambient evening light, muted and slightly desaturated color palette, not overly warm or golden, subtle string lights softly out of focus in background, authentic amateur-photography feel, slight underexposure, natural skin tones, imperfect candid composition, shot on a real camera with slight grain, no text, no overlays, plain photograph only. Vertical portrait 4:5 composition, subjects in the upper two-thirds of frame. (画面比例严格为 4:5,竖版 portrait;render strictly in a 4:5 aspect ratio)