Create a bold pop-art advertising poster for a fictional bubble-gum soda "POW!". FORMAT: 4:5 vertical, retro comic-book layout. SUBJECT: a glossy soda can exploding out of a comic "POW!" burst, thick black outlines, halftone dot shading, colorful splash bubbles. BACKGROUND: vivid clashing yellow-and-magenta panels with comic action lines. LIGHTING: flat graphic pop-art shading, glossy can highlights. TYPOGRAPHY: giant bold comic logo "POW!" center in red with white outline, tiny tagline "Bubblegum blast" bottom. FINISH: high-detail pop-art illustration, energetic retro commercial finish.