Highly detailed vintage vector emblem design for a North American football championship, perfectly centered symmetrical shield crest composition on a black background. In the center stands a cute realistic beaver mascot holding a classic soccer ball with green, white, and red color panels. Behind the beaver are three large vertical flag sections seamlessly blended together: Mexico flag on the left, Canada flag in the center, USA flag on the right. Left side of the crest features a stylized Aztec-inspired eagle head with intricate tribal feather ornaments in green, red, cream, and navy blue. Right side features a fierce American bald eagle head with sharp eyes, detailed layered feathers, and strong patriotic styling. Decorative shield border with multiple layered outlines and elegant vintage curves. Lower shield contains small maple leaf and USA stripe details integrated into the composition. Large curved ribbon banner across the bottom with bold distressed athletic typography reading: “CANADA • MEXICO • USA”. Smaller curved text underneath reading: “UNITED BY FOOTBALL • NORTH AMERICA”. Style inspired by premium vintage sports badges, retro football federation crests, esports logo aesthetics, and classic varsity emblem artwork. Clean vector illustration, thick navy outlines, distressed print texture, flat colors, highly detailed ornamental linework, layered ribbon elements, balanced symmetry, centered composition, sharp edges, decorative border frame, muted cream/navy/red/gree