Create a serene premium matcha advertising poster for a fictional brand "KYO GREEN". FORMAT: 4:5 vertical, elegant wellness layout. SUBJECT: a ceremonial bowl of vivid green matcha with delicate foam, a bamboo whisk mid-motion, matcha powder gently dusting down, fresh green leaves. BACKGROUND: calm soft-green to cream gradient with rice-paper texture. LIGHTING: soft diffused natural light, delicate highlights. TYPOGRAPHY: refined minimal logo "KYO GREEN" top-center, tiny tagline "Pure ritual" bottom. FINISH: 8k, hyper-realistic, tranquil finish.