Create a premium vertical product advertising poster for a fictional sparkling water brand "CLARITY". Preserve bold modern product-poster logic: single hero can centered, fully saturated monochrome background, oversized headline behind the can, vertical side label, short bottom descriptor. COMPOSITION: a sleek frosted aluminum can slightly below center on a seamless vivid aqua-blue background, a dramatic water splash frozen mid-burst with suspended ice cubes and droplets, one crisp diagonal shadow. TYPOGRAPHY: large bold white stacked headline "PURE / FLOW" behind the can; slim vertical left label "ALPINE SPARKLING WATER"; bottom line "ZERO SUGAR, ZERO COMPROMISE, INFINITE REFRESH." LIGHTING: strong clean directional light upper-left, glossy water highlights, crisp elegant shadow. STYLE: Cannes-level beverage advertising, luxury pop-minimal, ultra-real. NEGATIVE: cheap label, cluttered layout, plastic texture, muddy background, weak shadow, unreadable text, watermark. 8k.