Arche de porte quantique · Vide cosmique sombre

Cinematic sci-fi concept art of a colossal ring-shaped gate with swirling light at its center, against a dark cosmic void lit only by rim light and distant stars. A grand sense of scale, intricate futuristic design, atmospheric haze and volumetric light, photoreal detail. No text, no logos, no watermark. Vertical 4:5.