Design a 3D-stylized card frame for a SOLMON card inspired by the elegant design

Design a 3D-stylized card frame for a SOLMON card inspired by the elegant design in the provided image. The frame should feature slightly thicker corners to give it a more robust and pronounced appearance, while maintaining the overall sleek and intricate style. Use a metallic gold color for the frame, with a polished, reflective surface that highlights the edges and corners. Incorporate subtle design elements, like slight engravings or patterns along the thicker corners, to add a touch of sophistication and depth. Ensure the middle of the frame remains empty, creating a clean space where character artwork can be placed. The overall design should evoke a sense of luxury and power, while still being aligned with the SOLMON universe's aesthetics.