Create a refined 1970s-inspired black-and-white line drawing of a horse for upscale, vintage-style packaging. The illustration should evoke classic equestrian aestheticsāthink Ralph Steadmanās bold strokes or mid-century advertising etchingsāwith a clean, confident line quality. The horse should be stylized but anatomically graceful, conveying strength and elegance (e.g., a poised trot or alert stance). Incorporate subtle Art Nouveau or psychedelic flourishes (e.g., flowing mane details, geometric sunburst motifs) for period authenticity. Minimal shading, high contrast, and generous negative space for text integration (e.g., āHeritage Grain Equine Treatsā). No childish whimsy; aim for timeless, premium appeal. Ver mais