@media(hover:hover) and (pointer:fine) and (prefers-reduced-motion:no-preference){
.site-header,.site-footer,.btn,.gem-light__tabs button{--shine-x:50%;--shine-y:50%}
.site-header::after,.site-footer::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse 230px 100px at var(--shine-x) var(--shine-y),rgba(230,206,150,.15),transparent 75%);opacity:0;transition:opacity .25s;z-index:0}
.site-header[data-shine-active]::after,.site-footer[data-shine-active]::after{opacity:1}
.btn,.gem-light__tabs button{position:relative;overflow:hidden}
.btn::after,.gem-light__tabs button::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle 80px at var(--shine-x) var(--shine-y),rgba(255,248,220,.32),transparent 75%);opacity:0;transition:opacity .2s}
.btn[data-shine-active]::after,.gem-light__tabs button[data-shine-active]::after{opacity:1}
}