GPT Image 2.0 プロンプト - ダークファンタジーのガチャ召喚画面

Design a high-end gacha summon page for a new mobile game titled [Game Title], inspired by the summon interfaces of popular mobile games. The page should present a dark, cinematic, premium ARPG aesthetic with a rich and immersive atmosphere. The featured banner character is [Featured Character]. The layout should include a dramatic character showcase in the center, layered summon UI panels, glowing visual effects, rarity indicators, currency icons, summon buttons, event banner elements, and elegant decorative details. The background and visual motifs should reflect the identity, mood, and world style associated with [Featured Character]. The overall design should feel polished, collectible, visually powerful, and similar to a top-grossing mobile game gacha screen.size 3:2.