.kb-wrap{position:fixed;inset:0;z-index:9999;display:none}
.kb-wrap.kb-show{display:block}
.kb-dim{position:absolute;inset:0;background:rgba(0,0,0,.55)}
.kb-card{
  position:relative;z-index:2;max-width:520px;margin:10vh auto 0;background:#0c152b;
  color:#e8f0ff;border-radius:18px;padding:22px;text-align:center;
  border:1px solid rgba(255,255,255,.1);box-shadow:0 30px 80px rgba(0,0,0,.55)
}
.kb-title{margin:0 0 10px;font-size:20px;font-weight:800}
.kb-text{margin:0 0 18px;opacity:.92}
.kb-btn{
  display:inline-flex;align-items:center;gap:10px;padding:12px 18px;border-radius:12px;
  background:linear-gradient(180deg,#21d07a,#13b164);color:#04131a;text-decoration:none;font-weight:800;
  box-shadow:0 14px 36px rgba(33,208,122,.35)
}
.kb-ic.tg{display:inline-block;width:18px;height:18px;border:2px solid currentColor;border-radius:50%}
.kb-close{
  position:absolute;top:6px;right:8px;width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.25);
  background:transparent;color:#e8f0ff;font-size:22px;line-height:36px;cursor:pointer
}
@media (max-width:480px){ .kb-card{margin:8vh 16px 0} }