coffkaexe/mikudigitalart ? reverse-engineered prompt

Build me a small interactive web page that turns the words “miku” into a digital art portrait of Hatsune Miku.

I want it to use HTML, CSS, and JavaScript, with the drawing handled on a canvas. The idea is to take an image of Miku, read its pixel data, and use that as a mask so the text only appears where the portrait should be. Please make the page fill the screen nicely, calculate the grid so the text scales with the window, and keep the look clean and colorful like a typography poster.

Add a subtle animation so the text continuously slides to the left and feels alive instead of static. If needed, use the current browser docs or examples online to make the canvas and pixel processing work smoothly. Keep it as a polished little mini project that opens in the browser and immediately looks like a finished digital art piece.