.bt-join{position:relative;isolation:isolate;overflow:hidden;padding-block:var(--sec);text-align:center;background:radial-gradient(70% 90% at 50% 100%,rgba(237,0,140,.45),transparent 70%),radial-gradient(50% 50% at 15% 40%,rgba(228,167,74,.18),transparent 70%),var(--indigo)}
.bt-join__in{position:relative;z-index:1;max-width:760px}
.bt-join__mascot{width:120px;height:120px;margin:0 auto 10px;filter:drop-shadow(0 10px 20px rgba(0,0,0,.5))}
.bt-join .bt-lead{max-width:56ch;margin-inline:auto;margin-bottom:1.6em}