/* ── Ice key — the site's blue action button ───────────────────────── Ported from totp-decoder demo/ice-key-button.html. Two variants: .ice-key V5 "engraved grotesk · main" — frosted slab with fracture artwork, inclusions and a hover-swept reflection band (the homepage hero CTA). .ice-key.pure V5 "pure + engraved grotesk" — clean solid slab, no fractures/reflection/sweep. Every blue rectangular button on the site is this variant; the header auth pill (index.html #auth-btn) is its reference instance, so a change here restyles all of them together. Size grades: default ≈46px tall (hero CTA, form submits), .mini ≈32px (console chrome, the auth pill). The cap sits in-flow on the key's grid and sizes from its label, so each locale's text sets its own width; as a flex/grid child the key stretches with its column (login/reset submit rows) exactly like a padded pill would. Works on and