reate a clean, futuristic logo as a graphic illustration. Style: minimalist, sharp and precise line art, sleek and polished look with a glossy finish. In the background: cosmic space with a swirling vortex of stars; the vortex forms a soft glowing gradient of blue and yellow light, smooth transitions, no grain, high clarity. In the center of the vortex: a Greek letter Sigma (Σ) drawn with a single clean, thin blue line, perfectly centered, no extra details, maximum visual focus on the shape. Composition balanced, negative space used effectively. Resolution: 4K, aspect ratio 1:1. High detail, crisp edges, professional vector-like rendering, studio lighting, subtle glossy sheen on the Sigma outline.
