Create a premium vertical product advertising poster for a fictional natural deodorant brand "FRESH EARTH". Preserve bold modern product-poster logic: single hero stick centered, fully saturated monochrome background, oversized headline behind the stick, vertical side label, short bottom descriptor. COMPOSITION: a matte charcoal-grey deodorant stick slightly below center on a seamless soft sage-green background, a few activated-charcoal powder particles suspended mid-air, fresh eucalyptus leaves and a crisp diagonal shadow. TYPOGRAPHY: large bold cream stacked headline "PURE / SHIELD" behind the stick; slim vertical left label "ACTIVATED CHARCOAL"; bottom line "NATURAL, EFFECTIVE, HONEST." LIGHTING: strong clean directional light upper-left, matte texture and powder highlights, elegant shadow. STYLE: Cannes-level eco-beauty product advertising, ultra-real. NEGATIVE: cheap packaging, cluttered layout, plastic texture, muddy background, weak shadow, unreadable text, watermark. 8k.