For years, developers have been hacking around the limitations of border-radius, using clip-path, SVG masks, and fragile workarounds just to get anything other than round corners. The new corner-shape property finally changes that, opening the door to beveled, scooped, and squircle corners: https://www.smashingmagazine.com/2026/03/beyond-border-radius-css-corner-shape-property-ui/