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: 16:9 landscape. At blue hour on a snow-covered northern shoreline, one low dark basalt boulder protrudes through soft windblown snow at the far lower right. The dark slate sea is calm and extends horizontally across the lower third, merging with a deep desaturated navy sky. Few fine snowflakes visible close to the stone only, not a blizzard or bokeh. Left 65 percent nearly uniform deep ink blue, usable for white website typography. Intimate minimal, long exposure stillness, no stars or aurora. 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.