Japanese MNP Campaign Ad Banner

A square Japanese commercial social media campaign banner advertising a mobile switching promotion. **Composition & Layout**: Vertically stacked in 5 distinct zones over a sky-blue radial burst background with pale rays, subtle dotted halftone edges, small sparkle stars, and scattered colorful confetti in pink, yellow, and blue. - Zone 1 (Top): A dark royal-blue ribbon banner with pointed tails displaying white text: "[MNP限定キャンペーン]". - Zone 2: A bold headline reading "[乗り換えで]". - Zone 3: A massive, dominant offer block reading "[最大2万円還元]", with the numerals and currency ("2万円") rendered in bright glossy yellow with thick deep-blue outlines, white highlights, and soft drop shadows. - Zone 4: A centered white rounded information card with the text "[対象プラン申込で ポイント還元]", featuring a tilted cyan-screen smartphone icon on the left, a yellow circular gift box icon in the middle, and three stacked gold coin columns with a prominent front coin marked with "P" on the right. - Zone 5 (Bottom): A glossy royal-blue rounded CTA button reading "今すぐチェック" with a white circular play arrow icon on its right, flanked by two small yellow starburst accents. Centered below the button is a small gray disclaimer: "※表示はダミーです". **Style**: Energetic Japanese mobile carrier promotional ad, glossy vector-rendered elements, thick typographic outlines, high contrast, clean commercial layout, vibrant palette of navy blue, cyan, white, and vivid yellow.