#bbpad{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);z-index:2000;padding:9px 16px;border-radius:999px;background:rgba(9,22,44,.92);border:1.5px solid rgba(111,211,255,.55);color:#eaf6ff;font:600 14px Nunito,system-ui,sans-serif;pointer-events:none;opacity:0;transition:opacity .3s}
#bbpad.on{opacity:1}