#otc-btn{position:fixed;right:18px;bottom:18px;z-index:40;display:flex;align-items:center;gap:10px;border:0;cursor:pointer;background:#E40000;color:#fff;font:700 16px/1 Inter,system-ui,sans-serif;padding:15px 20px 15px 17px;border-radius:999px;border:1px solid rgba(255,255,255,.5);background:linear-gradient(180deg,rgba(255,70,70,.95),rgba(200,0,0,.95));-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:inset 0 1px 0 rgba(255,255,255,.65),inset 0 -2px 6px rgba(0,0,0,.2),0 12px 30px rgba(228,0,0,.4);transition:transform .2s,box-shadow .2s}
#otc-btn:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(228,0,0,.45),0 2px 6px rgba(0,0,0,.25)}
#otc-btn svg{width:22px;height:22px}
#otc-btn[hidden],#otc-panel[hidden]{display:none}
#otc-panel{position:fixed;right:18px;bottom:18px;z-index:60;width:380px;max-width:calc(100vw - 24px);height:min(600px,calc(100vh - 36px));display:flex;flex-direction:column;background:rgba(255,255,255,.74);-webkit-backdrop-filter:blur(26px) saturate(1.8);backdrop-filter:blur(26px) saturate(1.8);color:#111;border:1px solid rgba(255,255,255,.8);border-radius:28px;overflow:hidden;box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 28px 70px rgba(0,0,0,.35);font:16px/1.45 Inter,system-ui,sans-serif;animation:otcin .28s cubic-bezier(.2,.8,.2,1) both}
@keyframes otcin{from{opacity:0;transform:translateY(14px) scale(.97)}}
.otc-h{background:rgba(17,17,17,.82);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);color:#fff;padding:14px 14px 14px 18px;display:flex;align-items:center;gap:12px}
.otc-h b{display:block;font-size:17px;letter-spacing:-.02em}.otc-h small{display:block;color:#bbb;font-size:13px}
.otc-av{width:38px;height:38px;border-radius:50%;background:#E40000;display:flex;align-items:center;justify-content:center;flex:none}
.otc-av svg{width:20px;height:20px}
.otc-h .otc-x{margin-left:auto;background:none;border:0;color:#fff;cursor:pointer;padding:8px;border-radius:8px}
.otc-h .otc-x:hover{background:#2a2a2a}
.otc-h .otc-x svg{width:20px;height:20px;display:block}
.otc-acts{display:flex;gap:8px;padding:10px 14px;border-bottom:1px solid rgba(17,17,17,.08);background:rgba(255,255,255,.45)}
.otc-acts a{flex:1;text-align:center;text-decoration:none;font-weight:700;font-size:14px;color:#111;border:1px solid rgba(17,17,17,.18);border-radius:999px;padding:7px 4px;background:rgba(255,255,255,.7);box-shadow:inset 0 1px 0 #fff}
.otc-acts a:hover{background:#111;color:#fff}
#otc-log{flex:1;overflow-y:auto;padding:16px 14px;display:flex;flex-direction:column;gap:10px;background:transparent;scroll-behavior:smooth}
.otc-m{max-width:86%;padding:10px 13px;border-radius:16px;font-size:15.5px;word-wrap:break-word;overflow-wrap:anywhere}
.otc-m p{margin:0 0 6px}.otc-m p:last-child{margin:0}.otc-m ul{margin:4px 0 4px 18px;padding:0}.otc-m a{color:inherit;text-underline-offset:2px;font-weight:600}
.otc-b{background:rgba(255,255,255,.8);border:1px solid rgba(255,255,255,.9);box-shadow:0 4px 14px rgba(17,17,17,.06);border-bottom-left-radius:4px;align-self:flex-start}.otc-b a{color:#c40000}
.otc-u{background:linear-gradient(180deg,#ff3a3a,#d10000);box-shadow:inset 0 1px 0 rgba(255,255,255,.5);color:#fff;border-bottom-right-radius:4px;align-self:flex-end}
.otc-note{align-self:center;color:#777;font-size:12.5px;text-align:center;padding:0 10px}
.otc-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:2px}
.otc-chips button{font:600 14px Inter,system-ui,sans-serif;background:rgba(255,255,255,.75);border:1px solid rgba(17,17,17,.2);border-radius:999px;padding:7px 13px;cursor:pointer;color:#111}
.otc-chips button:hover{background:#111;color:#fff}
.otc-dots{display:inline-flex;gap:4px;padding:3px 0}.otc-dots i{width:7px;height:7px;border-radius:50%;background:#888;animation:otcd 1s infinite}
.otc-dots i:nth-child(2){animation-delay:.15s}.otc-dots i:nth-child(3){animation-delay:.3s}
@keyframes otcd{0%,60%,100%{opacity:.3;transform:none}30%{opacity:1;transform:translateY(-3px)}}
#otc-form{display:flex;gap:8px;padding:12px;border-top:1px solid rgba(17,17,17,.08);background:rgba(255,255,255,.45)}
#otc-in{flex:1;font:16px Inter,system-ui,sans-serif;border:1px solid rgba(17,17,17,.25);border-radius:999px;padding:10px 16px;min-width:0;color:#111;background:rgba(255,255,255,.85)}
#otc-in:focus{outline:3px solid rgba(228,0,0,.35);outline-offset:1px}
#otc-send{border:1px solid rgba(255,255,255,.4);background:linear-gradient(180deg,#ff3a3a,#d10000);box-shadow:inset 0 1px 0 rgba(255,255,255,.5);color:#fff;font:700 15px Inter,system-ui,sans-serif;border-radius:999px;padding:0 16px;cursor:pointer}
#otc-send:disabled{opacity:.5;cursor:default}
.otc-fine{padding:0 14px 10px;font-size:12px;color:#666;background:rgba(255,255,255,.45)}
@media(max-width:700px){#otc-btn{bottom:84px;right:14px;padding:14px 18px 14px 15px}#otc-panel{right:0;left:0;bottom:0;top:0;width:auto;max-width:none;height:auto;border-radius:0;border:0;background:rgba(255,255,255,.9)}}
@media(prefers-reduced-motion:reduce){#otc-panel,.otc-dots i{animation:none}#otc-log{scroll-behavior:auto}}