#pbc{--c1:var(--pb-1,#1F4FD8);--c2:var(--pb-2,#3DB54A);--c3:var(--pb-3,#F7C318);font-family:inherit}
.pbc-fab{position:fixed;right:22px;bottom:22px;z-index:9990;width:64px;height:64px;border-radius:50%;border:0;cursor:pointer;background:#fff;box-shadow:0 12px 30px -8px rgba(31,79,216,.55),0 0 0 4px rgba(255,255,255,.6);display:grid;place-items:center;transition:transform .3s cubic-bezier(.2,.8,.2,1)}
.pbc-fab:hover{transform:translateY(-3px) scale(1.05)}
.pbc-fab img{width:44px;height:44px;object-fit:contain}
.pbc-fab i{position:absolute;top:-4px;right:-4px;font-family:inherit;font-weight:800;font-size:10px;line-height:1;font-style:normal;color:#111;background:var(--c3);padding:4px 6px;border-radius:20px}
.pbc-ring{position:absolute;inset:-6px;border-radius:50%;background:conic-gradient(var(--c1),var(--c2),var(--c3),var(--c1));z-index:-1;animation:pbcspin 4s linear infinite;filter:blur(1px)}
@keyframes pbcspin{to{transform:rotate(1turn)}}
#pbc.open .pbc-fab{transform:scale(0);pointer-events:none}
.pbc-panel{position:fixed;right:22px;bottom:22px;z-index:9991;width:390px;max-width:calc(100vw - 24px);height:min(640px,calc(100vh - 44px));display:flex;flex-direction:column;background:#f5f7fc;border-radius:24px;overflow:hidden;box-shadow:0 30px 80px -20px rgba(7,15,43,.5),0 0 0 1px rgba(7,15,43,.06);transform:translateY(20px) scale(.96);opacity:0;pointer-events:none;transform-origin:bottom right;transition:.32s cubic-bezier(.2,.8,.2,1)}
#pbc.open .pbc-panel{transform:none;opacity:1;pointer-events:auto}
.pbc-panel header{display:flex;align-items:center;gap:10px;padding:14px 14px 14px 16px;color:#fff;background:linear-gradient(120deg,var(--c1),#0B1E5B 70%);position:relative}
.pbc-panel header:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:linear-gradient(90deg,var(--c1),var(--c2),var(--c3))}
.pbc-panel header img{width:42px;height:42px;background:#fff;border-radius:12px;padding:5px;object-fit:contain}
.pbc-panel header div{flex:1;line-height:1.2}
.pbc-panel header b{font-size:16px}
.pbc-panel header small{display:flex;align-items:center;gap:6px;font-size:11.5px;opacity:.85}
.pbc-dot{width:7px;height:7px;border-radius:50%;background:#4ade80;box-shadow:0 0 0 3px rgba(74,222,128,.3)}
.pbc-panel header button{background:rgba(255,255,255,.14);border:0;color:#fff;width:34px;height:34px;border-radius:10px;cursor:pointer;font-size:15px}
.pbc-body{flex:1;overflow-y:auto;padding:16px 14px;display:flex;flex-direction:column;gap:12px;overscroll-behavior:contain}
.pbc-msg{display:flex;gap:8px;align-items:flex-end;animation:pbcin .35s cubic-bezier(.2,.8,.2,1)}
@keyframes pbcin{from{opacity:0;transform:translateY(8px)}}
.pbc-msg img{width:28px;height:28px;border-radius:9px;background:#fff;padding:3px;object-fit:contain;box-shadow:0 2px 6px rgba(0,0,0,.08);flex:none}
.pbc-bub{max-width:82%;padding:10px 13px;border-radius:16px 16px 16px 4px;background:#fff;color:#1b2440;font-size:14px;line-height:1.55;box-shadow:0 2px 10px -4px rgba(7,15,43,.15)}
.pbc-bub p{margin:0 0 .5em}.pbc-bub p:last-child{margin:0}
.pbc-bub a{color:var(--c1);font-weight:600}
.pbc-bub ul{margin:.3em 0;padding-left:1.2em}
.pbc-msg.me{justify-content:flex-end}
.pbc-msg.me .pbc-bub{background:linear-gradient(135deg,var(--c1),#173bb0);color:#fff;border-radius:16px 16px 4px 16px}
.pbc-link{display:inline-block;margin-top:8px;padding:7px 12px;border-radius:10px;background:#eef3ff;text-decoration:none;font-size:13px}
.pbc-typing .pbc-bub{display:flex;gap:4px;padding:14px}
.pbc-typing i{width:7px;height:7px;border-radius:50%;background:#9aa6c4;animation:pbcdot 1s infinite}
.pbc-typing i:nth-child(2){animation-delay:.15s}.pbc-typing i:nth-child(3){animation-delay:.3s}
@keyframes pbcdot{50%{transform:translateY(-5px);background:var(--c1)}}
.pbc-chips{display:flex;gap:6px;overflow-x:auto;padding:0 12px 10px;scrollbar-width:none}
.pbc-chips::-webkit-scrollbar{display:none}
.pbc-chips button{flex:none;border:1px solid #d5ddf3;background:#fff;color:#1f3a8a;border-radius:20px;padding:7px 12px;font-family:inherit;font-weight:600;font-size:12.5px;line-height:1.2;cursor:pointer;transition:.2s}
.pbc-chips button:hover{background:var(--c1);color:#fff;border-color:var(--c1)}
.pbc-form{display:flex;gap:8px;padding:10px 12px;background:#fff;border-top:1px solid #e6eaf4}
.pbc-form input{flex:1;border:1px solid #dbe2f2;border-radius:14px;padding:12px 14px;font:inherit;font-size:15px;outline:0;background:#f7f9fd}
.pbc-form input:focus{border-color:var(--c1);box-shadow:0 0 0 3px rgba(31,79,216,.12)}
.pbc-form button{width:46px;border:0;border-radius:14px;background:linear-gradient(135deg,var(--c2),#1f8f3a);color:#fff;cursor:pointer}
.pbc-panel footer{font-size:10.5px;text-align:center;color:#8590ad;padding:0 10px 8px;background:#fff}
@media (max-width:639px){
  .pbc-fab{display:none}
  .pbc-panel{right:0;bottom:0;width:100%;max-width:100%;height:100%;height:100dvh;border-radius:0;padding-bottom:env(safe-area-inset-bottom)}
  html.pbc-lock,html.pbc-lock body{overflow:hidden}
}