Voltage Nagoya LINE Registration Poster AI Image Prompt

Japanese promotional poster flyer for LINE registration guide of coworking space Voltage Nagoya. Style: clean corporate flat design, modern Japanese advertising layout, vector icons, white background with bold blue and green accents, high readability, print-ready poster composition. Layout: portrait orientation, sections: top header '公式LINE登録で利用開始！' and subheadline '受付・チェックイン・予約はすべてLINEで完結！'; upper middle main signup area with 'まずは友だち追加！', QR code placeholder, note; upper right LINE features list (お試し会員登録, 会議室の予約, 各種チェックイン, お知らせ・キャンペーン配信); middle rich menu steps (3 steps with visuals and text); lower middle facility info (出入り自由, お手洗い・給湯室, フリードリンク, 電源について, 貸し出し備品); bottom footer message. Visual details: small colorful confetti strokes and sparkles near top corners, subtle geometric blue and yellow corner shapes around poster edges; main colors: deep blue, bright LINE green, yellow, white, light gray; typography: bold Japanese sans-serif headline, large green emphasis on LINE, smaller black explanatory text, section headers in green and blue; icons: simple outlined vector icons with consistent stroke weight; QR area: large empty rounded rectangle placeholder bordered in green; speech circle: solid green circular callout on left with white text 'まずは友だち追加！'. Customizable fields: headline, subheadline, accent green, footer note.