/* Flat-key shimmer (8 Oct 2026): a soft highlight that glides across the key now and then. Shape comes from the flat key itself. */
.mk-key{position:relative;display:inline-block;flex:none;line-height:0}
.mk-key::after{content:"";position:absolute;inset:0;pointer-events:none;mix-blend-mode:soft-light;
  background:linear-gradient(105deg,#0000 40%,#fff6dce6 50%,#0000 60%) 0 0/260% 100% no-repeat;animation:mk-glide 8s ease-in-out infinite;
  -webkit-mask:url(/marks/key-gold-v2.svg) 50%/contain no-repeat;mask:url(/marks/key-gold-v2.svg) 50%/contain no-repeat}
@keyframes mk-glide{0%{opacity:0;background-position:0 0}8%{opacity:1}38%{opacity:1;background-position:100% 0}46%,to{opacity:0;background-position:100% 0}}
@media (prefers-reduced-motion:reduce){.mk-key::after{opacity:0;animation:none}}