Build a single HTML page: a painfully boring corporate SaaS landing page (logo, nav, hero headline, Get Started button, three feature cards, pricing table, footer). A chubby orange cat lives on it and slowly destroys it. The cat wanders around by itself, sits on the headline, swats buttons and cards so they fall off with real physics, knocks the logo off the nav, chases the mouse cursor, kneads the pricing table, and naps in the ruins. Clicking the cat makes it meow and do something worse. Draw the cat with code (canvas, SVG or CSS), no external assets or libraries. Make it adorable and chaotic. It should feel fun the moment it loads.