Q版勇者開啟寶箱的冒險島活動圖

Create a finished flat 2D design that fills the entire canvas, aspect ratio --ar 16:9. Scene elements inside the artwork (walls, rooms, shadows and so on) are allowed when the description calls for them, but absolutely no photo-of-a-poster mockups: no picture frame, no poster on a wall or desk, no photo pinned up, no perspective warp on paper edges, no drop shadow around the artwork. [Campaign Details] - Title: [game title: Treasure Hunt!] - Tagline: [description: Find treasures on a great adventure island!] - Genre line: [subtext: RPG Adventure Action!] [Look and Content] Think of the event-announcement art for a Japanese mobile RPG or casual game: a cheerful, colorful fantasy world. In the foreground, adorable chibi heroes or mascots grin as they lift the lid of a treasure chest, and golden light with magical particles bursts out dazzlingly. Behind them spread a blue sky, white clouds and lush fantasy islands or forests. Put a fantasy-style decorative logotype of [game title: Treasure Hunt!] at the top or in the center (works for GPT-image / Nano Banana Pro), and lay out [description: Find treasures on a great adventure island!] and [subtext: RPG Adventure Action!] beneath it so they read easily. Colors are bright and highly saturated, with magical gloss and soft shadows.

[活動資訊] - 標題：[game title: Treasure Hunt!] - 標語：[description: Find treasures on a great adventure island!] - 型別副標：[subtext: RPG Adventure Action!] [畫面與內容] - 風格：日系手遊或休閒遊戲活動公告風格的插畫，色彩繽紛、歡樂的奇幻世界。 - 角色：可愛的 Q 版英雄或吉祥物，笑著開啟寶箱；金色光芒與魔法粒子從箱中耀眼地溢位。 - 場景：藍天白雲，繁茂奇幻世界裡的島嶼或森林。 - 文字（適用於 GPT-image / Nano Banana Pro）：畫面中央或上方設計奇幻風格的裝飾性標誌字 [game title: Treasure Hunt!]，下方以易讀的排版加入 [description: Find treasures on a great adventure island!] 和 [subtext: RPG Adventure Action!]。 - 色彩與光線：明亮的高飽和奇幻色彩，魔法般的光澤，柔和的陰影。 [輸出規則（必須）] - 直接輸出成品設計本身，作為鋪滿整個畫布的平面 2D 作品。設計內部的場景元素（牆面、房間、陰影等）按描述可以出現。 - 絕對不要出現“海報照片”式的樣機：不要相框，不要海報掛牆或放桌上，不要釘在牆上的照片，不要紙張邊緣的透視變形，作品周圍不要投影。 - 畫幅：--ar 16:9