简约卡通等距投影现代风格男性健身引体向上运动场景插

minimalist cartoon style illustration, isometric 3D perspective, clean lines, flat colors, no complex textures or shadow details, white background, main elements in black, gray, red, and skin tones, simple and vibrant color scheme, strong contrast, adult male aged 20-35 doing pull-ups, wearing white vest, black shorts with red stripes, black sneakers, black metal pull-up bar with vertical posts and horizontal bar, central-right position, pure white background, no environmental elements, clean and focused atmosphere, fitness theme