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万颗粒子球心文字变形

3D Scene

一个 Three.js 粒子动画网页：约 12000 个发光粒子每 4 秒在球体、爱心和「HI」文字三种形态间平滑变形，按形态渐变配色、加色混合出辉光，整体缓慢自转并随鼠标视差。提示词是五条编号的技术要求，含 importmap 引入、离屏 canvas 采样文字等细节。适合做表白页、活动开场或网页背景特效。

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You are an expert web designer. Build a stunning, production-ready page with
a bold hero section, smooth CSS transitions and a carefully tuned dark palette.
Use a neutral background, generous rounded corners and one electric accent color.
Structure the layout with a sticky header, feature grid, social proof and a final
call to action. Keep typography tight, spacing consistent and motion subtle.

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