Create ONE standalone premium website background, ultrawide 21:9, highest available native detail. Collection: Coastal address. Intended use: Hero with text on the left. Scene and composition: Wide airy living room opening toward sea on right, pale linen curtains and low cream sofa, sunwashed plaster wall on left for headline, minimal warm oak accents. Style: Premium photorealistic coastal residential architecture photography. Whitewashed mineral plaster, pale natural stone, soft sea-glass water, sandy beige, weathered oak. Luminous marine atmosphere, gentle sea haze, restrained resort-like calm, realistic structural details and natural Mediterranean planting. Keep generous intentional negative space suited to this composition. Exquisite art direction, natural optics, very fine film grain, believable proportions and surfaces. This is an IMAGE ASSET, not a website screenshot. No words, numbers, lettering, logos, watermarks, UI, borders, collages or inset pictures. Do not add a title or any typography.