Payment card in eight pastel colour themes with a slow drifting light sheen (Web Animations API, off for reduced motion), a bright top edge and soft shadows. The frozen variant greys the card, blurs the details and shows a label; hover or focus thaws it. Card component props: tone, label, brand, holderLabel, holderName, frozen, frozenLabel, network. The sheen needs a tiny script. Options (data attributes on the section): data-theme (light|dark) surface behind the cards; data-anim (rise|fade|none) entrance; data-motion (on|off) drifting sheen.