"High-resolution, minimalistic cryptocurrency logo and coin mockup on a dark gradient background. Center a sleek circular coin with a metallic rose-gold rim and a deep midnight-blue face. Emboss a geometric monogram 'B' formed from interlocking triangles in the coin center, with precise beveling and soft specular highlights. Add faint, elegant circuit-trace patterns radiating outward on the coin face. Use realistic studio lighting with a soft rim light, subtle depth of field, and high contrast. Color palette: rose-gold, midnight blue, charcoal. Style: photorealistic, ultra-detailed, 4k, sharp focus, clean composition Mehr sehen