Use case: photorealistic-natural. Create ONE standalone full-bleed premium photographic website background for Snowbound, a coherent collection about the silence and tactile beauty of snow. Scene: 9:16 tall portrait for a mobile website. A tiny single bare dark birch shrub emerges at bottom right of an extensive snowy field, its sparse branches coherent and irregular, delicate recent powder on stems. Soft real falling snow in front of distant dark slate foothill, underexposed winter dusk. Top 60 percent quiet deep desaturated navy grey sky and distant haze, clean for white mobile typography. No forest, no lights, no buildings, no chunky artificial snow balls. Real editorial landscape photography with plausible cold light, restrained subdued color, natural irregularity and fine film texture, high native detail. Deliberately preserve the stated calm copy space. Avoid artificial gradients, illustration, 3D renders, glossy CGI, surreal shapes, repeated visual motifs, people, footprints, logos, lettering, UI, borders, contact sheets or watermark.