:root{
  --cba-accent:#f0b400;
  --cba-panel:#141417;
  --cba-border:#2a2a2f;
  --cba-text:#eaeaea;
}
.cba-fab-wrap{
  position:fixed;right:16px;bottom:16px;z-index:9999;
  display:flex;flex-direction:column;gap:10px;
}
.cba-fab{
  appearance:none;cursor:pointer;border:1px solid var(--cba-border);
  background:var(--cba-panel);color:var(--cba-text);
  padding:10px 12px;border-radius:999px;box-shadow:0 6px 16px rgba(0,0,0,.35);
  display:flex;align-items:center;gap:8px;font-size:14px;line-height:1;
  transition:transform .15s ease,border-color .15s ease,opacity .15s ease;
}
.cba-fab:hover{border-color:var(--cba-accent);transform:translateY(-1px)}
.cba-fab[aria-disabled="true"]{opacity:.5;cursor:not-allowed}
.cba-top{display:none}
.cba-fab .cba-ic{display:inline-block;width:18px;height:18px}
.cba-ic.cba-ic-back::before{content:"\2190";font-size:16px;line-height:1}
.cba-ic.cba-ic-top::before{content:"\2191";font-size:16px;line-height:1}
@media (max-width:640px){
  .cba-fab-wrap{right:10px;bottom:10px}
  .cba-fab{padding:10px 12px;font-size:13px}
}