Create a minimal square favicon for an independent German coupon website. Design a simple coupon-ticket symbol containing a clear percentage sign. Use a dark teal background with a warm coral percentage symbol and a small cream detail. The icon must remain recognizable at very small sizes, including 16×16 and 48×48 pixels. Centered composition, bold geometric shapes, flat vector style, high contrast, rounded corners, no text, no letters, no gradients, no shadows, no watermark, and no resemblance to the official bonprix logo.