液态文字特效

Draw the text with fillText into an offscreen 2D canvas sized with device pixel ratio and padding for distortion overflow. Upload it as a texture to a WebGL quad and write a fragment shader that offsets UVs with time-varying noise or sine waves before sampling, optionally sampling R, G and B at slightly different offsets. Expose uniforms such as speed and strength and tween them on pointerenter. Keep the real text in the DOM (visually hidden) for accessibility and selection.