Q版勇者开启宝箱的冒险岛活动图

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.

[活动信息] - 标题：[game title: Treasure Hunt!] - 标语：[description: Find treasures on a great adventure island!] - 类型副标：[subtext: RPG Adventure Action!] [画面与内容] - 风格：日系手游或休闲游戏活动公告风格的插画，色彩缤纷、欢乐的奇幻世界。 - 角色：可爱的 Q 版英雄或吉祥物，笑着打开宝箱；金色光芒与魔法粒子从箱中耀眼地溢出。 - 场景：蓝天白云，繁茂奇幻世界里的岛屿或森林。 - 文字（适用于 GPT-image / Nano Banana Pro）：画面中央或上方设计奇幻风格的装饰性标志字 [game title: Treasure Hunt!]，下方以易读的排版加入 [description: Find treasures on a great adventure island!] 和 [subtext: RPG Adventure Action!]。 - 色彩与光线：明亮的高饱和奇幻色彩，魔法般的光泽，柔和的阴影。 [输出规则（必须）] - 直接输出成品设计本身，作为铺满整个画布的平面 2D 作品。设计内部的场景元素（墙面、房间、阴影等）按描述可以出现。 - 绝对不要出现“海报照片”式的样机：不要相框，不要海报挂墙或放桌上，不要钉在墙上的照片，不要纸张边缘的透视变形，作品周围不要投影。 - 画幅：--ar 16:9