.btn-gem{--bg: #111;--text: #fff;--radius: 999px;--border: 1.5px;--glow: #fdbf0d;--speed: 2.8s;position:relative;display:block;text-align:center;color:var(--text);text-decoration:none;background:var(--bg);border-radius:var(--radius);padding:12px 18px;border:var(--border) solid rgba(253,191,13,.25);box-shadow:inset 0 0 0 1px #ffffff08;overflow:hidden}.btn-gem:after{content:"";position:absolute;left:10px;right:10px;bottom:-1px;height:2.5px;background:linear-gradient(90deg,rgba(253,191,13,0) 0%,rgba(253,191,13,.15) 35%,rgba(253,191,13,1) 50%,rgba(253,191,13,.15) 65%,rgba(253,191,13,0) 100%);filter:blur(.4px) drop-shadow(0 0 6px rgba(253,191,13,.45));transform:translate(-110%);animation:gem-sweep var(--speed) linear infinite}.btn-gem:hover{box-shadow:0 6px 22px #fdbf0d26,inset 0 0 0 1px #fdbf0d59}@keyframes gem-sweep{to{transform:translate(110%)}}@media (prefers-reduced-motion: reduce){.btn-gem:after{animation:none;opacity:.5}}