.echo-item{color:var(--cyber-accent);font-family:Space Mono,monospace;font-size:clamp(.85rem,2.5vw,1.6rem);padding:.35em .75em;text-decoration:none;text-transform:lowercase;transition:opacity .12s ease,text-shadow .3s ease,letter-spacing .4s ease;white-space:nowrap;z-index:20}.echo-item,.edge{position:absolute}.edge{background:var(--cyber-accent);opacity:0;pointer-events:none}.edge-top{height:2px;left:0;right:0;top:0}.edge-right{bottom:0;right:0;top:0;width:2px}.edge-bottom{bottom:0;height:2px;left:0;right:0}.edge-left{bottom:0;left:0;top:0;width:2px}.echo-top{left:50%;top:16%;transform:translate(-50%)}.echo-right{right:8%;top:50%;transform:translateY(-50%)}.echo-bottom{bottom:16%;left:50%;transform:translate(-50%)}.echo-left{left:8%;top:50%;transform:translateY(-50%)}@media (max-width:768px){.echo-item{font-size:.8rem}.echo-top{left:50%;top:12%;transform:translate(-50%)}.echo-right{bottom:22%;right:6%;top:auto;transform:none}.echo-bottom{bottom:12%;left:50%;transform:translate(-50%)}.echo-left{bottom:22%;left:6%;top:auto;transform:none}}.tilt-device{animation:tilt-rock 2.8s ease-in-out infinite;transform-origin:center bottom}@keyframes tilt-rock{0%,to{transform:rotate(0)}20%{transform:rotate(-18deg)}50%{transform:rotate(0)}70%{transform:rotate(18deg)}90%{transform:rotate(0)}}.tap-hint-icon{animation:tap-pulse 2.2s ease-in-out infinite}@keyframes tap-pulse{0%,to{opacity:.5;transform:scale(1)}50%{opacity:1;transform:scale(1.15)}}.pulse-heart-ring{opacity:0;pointer-events:none;position:absolute;transform-origin:center center;will-change:transform,opacity;z-index:5}