:root{--bg-center:#f4f7f9;--bg-edge:#fff;--grid-color:rgba(0,0,0,.03);--flash-color:rgba(0,102,255,.08)}.cyber-grid-container{background:radial-gradient(circle,var(--bg-center)0%,var(--bg-edge)100%);z-index:-1;width:100%;height:140%;position:absolute;top:0;left:0;overflow:hidden}.grid-overlay{background-image:linear-gradient(var(--grid-color)1px,transparent 1px),linear-gradient(90deg,var(--grid-color)1px,transparent 1px);background-size:20px 20px;position:absolute;top:0;bottom:0;left:0;right:0}.grid-cells{grid-template-rows:repeat(auto-fill,20px);grid-template-columns:repeat(auto-fill,20px);width:100%;height:100%;display:grid}.cell{width:20px;height:20px}@keyframes flash{0%,to{background-color:transparent}50%{background-color:var(--flash-color)}}.cell.active{animation:2.5s ease-in-out flash}