Create a minimalist congratulatory background in A4 format (210×297 mm). The main color is a soft, light gray (#D3D3D3) with a subtle gradient (slightly lighter in the center, very slightly darker near the edges) to add depth. The central area is completely empty, designed to accommodate text or an image. Decorative elements: * Along the edges of the frame, scatter silver confetti pieces of varying sizes and simple five‑pointed silver stars. Arrange them in a balanced, asymmetrical pattern. * In the bottom right corner, depict 2–3 lit sparklers emitting soft golden sparks. Show the sparklers at different angles, with a gentle glow and a few floating sparks trailing upward. Style: clean, modern, and elegant. Use a metallic silver (#C0C0C0) for the confetti and stars with a slight reflective sheen. The sparklers should have warm tones: golden yellow (#FFD700) and orange (#FFA500). Soft lighting, high detail, smooth textures.
