折纸烟花在金银洋红间炸开
整朵烟花由硬纸折成，棱面分明，透明底图直接能拿去叠海报。
✍️ 难点在透明底：只写“transparent”模型常偷偷画白底，这里把 alpha=0、非白、非棋盘格逐项否掉才是变量。边距和“不裁切”也要明说，不然光芒尖会顶到画框外。
📋 提示词 自然语言739 字符
Square 1:1 frame. A firework burst built entirely from folded paper in gold, silver and magenta: long folded-paper rays fan out from the centre, with small folded-paper stars scattered between them. Every element is creased from stiff paper into angular, origami-like planes with sharp folds and flat tonal facets, all kept inside one coordinated paper palette.
Cut it out on a fully transparent background: alpha = 0 everywhere outside the shapes, never white, never tinted, no checkerboard pattern, a genuine alpha channel. Keep the whole burst well inside the canvas with a clear transparent margin on all four sides, the outer rim completely transparent and nothing clipped by the frame. The artwork floats freely and casts no shadow.
📋 中文译写版 自然语言
1:1 方形画幅。一朵完全由折纸构成的烟花，配色为金、银、洋红：长条折纸光芒从中心向外放射，光芒之间散落着小块折纸星星。所有元素都由硬纸折成带锐利折痕的棱角平面，色块平整、分面清晰，统一在同一套纸张配色里。
以全透明背景抠出：图形之外 alpha = 0，不是白色、不是有色底、不要棋盘格，必须是真实的 alpha 通道。整朵烟花完整落在画布内，四周留出透明边距，最外缘完全透明，不被画框裁切。作品悬浮，不带投影。
