.vhc-btn{position:fixed;right:20px;bottom:20px;z-index:2147483000;display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:999px;border:1px solid rgba(34,211,238,.45);background:#0b1220;color:#e6f1ff;font:600 15px/1 system-ui,-apple-system,"Segoe UI",sans-serif;cursor:pointer;box-shadow:0 8px 30px rgba(0,0,0,.45)}
.vhc-btn:hover{border-color:#22d3ee}
.vhc-dot{width:11px;height:11px;border-radius:50%;background:#ef4444;box-shadow:0 0 0 3px rgba(239,68,68,.25);flex:none}
.vhc-dot.on{background:#22c55e;box-shadow:0 0 0 3px rgba(34,197,94,.25)}
.vhc-panel{position:fixed;right:20px;bottom:20px;z-index:2147483001;width:min(380px,calc(100vw - 24px));height:min(560px,calc(100vh - 40px));display:flex;flex-direction:column;border-radius:16px;border:1px solid rgba(255,255,255,.12);background:#0b1220;color:#e6f1ff;font:14px/1.45 system-ui,-apple-system,"Segoe UI",sans-serif;box-shadow:0 20px 60px rgba(0,0,0,.6);overflow:hidden}
.vhc-head{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid rgba(255,255,255,.1);background:#0f1a2e}
.vhc-head b{flex:1;font-size:15px}.vhc-head small{display:block;font-weight:400;color:#94a3b8;font-size:12px}
.vhc-x{border:0;background:transparent;color:#94a3b8;font-size:20px;cursor:pointer;line-height:1;padding:2px 6px}
.vhc-x:hover{color:#fff}
.vhc-msgs{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}
.vhc-m{max-width:86%;padding:9px 12px;border-radius:12px;white-space:pre-wrap;word-wrap:break-word}
.vhc-m small{display:block;color:#94a3b8;font-size:11px;margin-bottom:2px}
.vhc-m.c{align-self:flex-end;background:#0e7490;color:#fff;border-bottom-right-radius:4px}
.vhc-m.c small{color:#bae6fd}
.vhc-m.b,.vhc-m.s{align-self:flex-start;background:#16233b;border-bottom-left-radius:4px}
.vhc-m.s{border:1px solid rgba(34,211,238,.4)}
.vhc-m.y,.vhc-m.i{align-self:center;background:transparent;color:#94a3b8;font-size:12px;text-align:center;max-width:94%}
.vhc-foot{border-top:1px solid rgba(255,255,255,.1);padding:10px;display:flex;flex-direction:column;gap:8px;background:#0f1a2e}
.vhc-row{display:flex;gap:8px}
.vhc-in{flex:1;min-width:0;border-radius:10px;border:1px solid rgba(255,255,255,.18);background:#0b1220;color:#e6f1ff;padding:9px 11px;font:inherit}
.vhc-in:focus{outline:2px solid #22d3ee;outline-offset:0}
.vhc-go{border:0;border-radius:10px;background:#22d3ee;color:#04202a;font-weight:700;padding:0 14px;cursor:pointer}
.vhc-go:disabled{opacity:.5;cursor:default}
.vhc-link{border:0;background:transparent;color:#67e8f9;cursor:pointer;font:inherit;font-size:12px;padding:2px 0;text-align:left}
.vhc-link:hover{text-decoration:underline}
.vhc-start{padding:18px;display:flex;flex-direction:column;gap:12px;flex:1}
.vhc-start p{margin:0;color:#cbd5e1}
@media (max-width:480px){.vhc-btn{right:12px;bottom:12px}.vhc-panel{right:12px;bottom:12px}}
.vhc-root[hidden]{display:none}