Generate a modern, geometric t-shirt design featuring the silhouette of a lion made entirely from sharp, angular lines and geometric shapes. The lion should be composed of a combination of gold, orange, and deep red tones, giving it a regal and powerful appearance. Add the text "STRENGTH" in a minimalist, block-style font beneath the lion, keeping the typography simple to complement the geometric design. Apply a subtle vignette effect around the edges of the design to draw focus to the lion. Use sharpening effects to enhance the angular details of the lion's shape. Keep the background clear to let the geometric lion be the main focus.