.bca-launcher{border:1px solid var(--line);border-radius:var(--rd-radius);background:linear-gradient(120deg,#0e9a631a,#4c7eff14 55%,transparent),var(--card);width:100%;box-shadow:var(--rd-shadow);color:var(--ink);cursor:pointer;text-align:left;font:inherit;align-items:center;gap:16px;margin-bottom:20px;padding:16px 20px;transition:transform .12s,box-shadow .16s,border-color .16s;display:flex}.bca-launcher:hover{border-color:#0e9a6373;transform:translateY(-1px);box-shadow:0 2px 4px #14141e0d,0 12px 28px #14141e17}.bca-launcher:active{transform:translateY(0)}.bca-launcher-icon{background:var(--indigo);color:#fff;border-radius:12px;flex-shrink:0;place-items:center;width:46px;height:46px;display:grid}.bca-launcher-text{flex:1;min-width:0}.bca-launcher-title{letter-spacing:-.01em;align-items:center;gap:8px;font-size:16px;font-weight:700;display:flex}.bca-launcher-sub{color:var(--ink-soft);margin-top:2px;font-size:13px}.bca-launcher-badge{letter-spacing:.06em;text-transform:uppercase;background:var(--indigo-light);color:var(--indigo-dark);border-radius:999px;padding:2px 7px;font-size:10px;font-weight:700}.bca-launcher-cue{color:var(--indigo);flex-shrink:0;align-items:center;gap:6px;font-size:13px;font-weight:600;display:flex}@media (max-width:640px){.bca-launcher-cue span{display:none}.bca-launcher{gap:12px;padding:14px}}.bca-overlay{z-index:120;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#11141b8c;justify-content:center;align-items:center;padding:24px;animation:.14s bca-fade;display:flex;position:fixed;inset:0}@keyframes bca-fade{0%{opacity:0}to{opacity:1}}@keyframes bca-rise{0%{opacity:0;transform:translateY(8px)scale(.99)}to{opacity:1;transform:none}}.bca-panel{background:var(--card);width:min(1020px,100%);height:min(86vh,860px);color:var(--ink);border:1px solid var(--line);border-radius:18px;flex-direction:column;animation:.18s bca-rise;display:flex;overflow:hidden;box-shadow:0 24px 60px #0a0c1459}.bca-head{border-bottom:1px solid var(--line);background:var(--card);align-items:center;gap:12px;padding:14px 16px;display:flex}.bca-head-icon{background:var(--indigo);color:#fff;border-radius:10px;flex-shrink:0;place-items:center;width:34px;height:34px;display:grid}.bca-head h2{letter-spacing:-.01em;margin:0;font-size:15px;font-weight:700}.bca-head p{color:var(--ink-soft);margin:1px 0 0;font-size:12px}.bca-head-spacer{flex:1}.bca-icon-btn{border:1px solid var(--line);background:var(--bg);color:var(--ink-soft);cursor:pointer;border-radius:9px;place-items:center;width:32px;height:32px;transition:color .12s,border-color .12s,background .12s;display:grid}.bca-icon-btn:hover{color:var(--ink);border-color:var(--ink-faint)}.bca-icon-btn:disabled{opacity:.5;cursor:not-allowed}.bca-body{flex:1;min-height:0;display:flex}.bca-rail{border-right:1px solid var(--line);background:var(--bg);flex-direction:column;flex-shrink:0;width:226px;min-height:0;display:flex}.bca-rail-head{padding:10px}.bca-new-btn{border:1px solid var(--line);background:var(--card);width:100%;color:var(--ink);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;gap:7px;padding:9px 10px;font-size:13px;font-weight:600;display:flex}.bca-new-btn:hover{border-color:var(--indigo);color:var(--indigo)}.bca-rail-list{flex:1;padding:0 8px 10px;overflow-y:auto}.bca-rail-empty{color:var(--ink-faint);padding:10px 6px;font-size:12px}.bca-thread{width:100%;color:var(--ink-soft);font:inherit;text-align:left;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:9px;align-items:center;gap:6px;padding:8px 9px;font-size:12.5px;display:flex}.bca-thread:hover{background:var(--card);color:var(--ink)}.bca-thread.is-active{background:var(--card);border-color:var(--line);color:var(--ink);font-weight:600}.bca-thread-title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.bca-thread-del{color:var(--ink-faint);cursor:pointer;opacity:0;background:0 0;border:none;border-radius:6px;flex-shrink:0;padding:2px}.bca-thread:hover .bca-thread-del{opacity:1}.bca-thread-del:hover{color:var(--red)}@media (max-width:860px){.bca-rail{display:none}.bca-overlay{padding:0}.bca-panel{border-radius:0;width:100%;height:100%}}.bca-chat{flex-direction:column;flex:1;min-width:0;min-height:0;display:flex}.bca-scroll{flex:1;padding:18px 20px 8px;overflow-y:auto}.bca-msg{gap:10px;max-width:780px;margin-bottom:16px;display:flex}.bca-msg.is-user{flex-direction:row-reverse;margin-left:auto}.bca-avatar{background:var(--indigo-light);width:28px;height:28px;color:var(--indigo-dark);border-radius:8px;flex-shrink:0;place-items:center;display:grid}.bca-bubble{border:1px solid var(--line);background:var(--bg);overflow-wrap:anywhere;border-radius:13px;min-width:0;padding:10px 13px;font-size:14px;line-height:1.6}.bca-msg.is-user .bca-bubble{background:var(--indigo);border-color:var(--indigo);color:#fff}.bca-bubble.is-error{background:var(--red-light);color:var(--red);border-color:#e5473f59}.bca-bubble p{margin:0 0 8px}.bca-bubble p:last-child{margin-bottom:0}.bca-bubble ul,.bca-bubble ol{margin:0 0 8px;padding-inline-start:20px}.bca-bubble ul{list-style:outside}.bca-bubble ol{list-style:decimal}.bca-bubble li{margin-bottom:3px}.bca-bubble strong{font-weight:700}.bca-tools{flex-wrap:wrap;gap:5px;margin-top:8px;display:flex}.bca-tool-chip{background:var(--card);border:1px solid var(--line);color:var(--ink-faint);border-radius:999px;padding:2px 7px;font-size:10.5px;font-weight:600}.bca-msg-files{flex-wrap:wrap;gap:6px;margin-bottom:6px;display:flex}.bca-msg-file{background:#ffffff2e;border:1px solid #ffffff47;border-radius:999px;align-items:center;gap:5px;padding:3px 8px;font-size:11.5px;display:flex}.bca-msg-thumb{object-fit:cover;border:1px solid var(--line);border-radius:9px;width:120px;height:90px}.bca-empty{text-align:center;max-width:640px;margin:22px auto 0}.bca-empty h3{letter-spacing:-.01em;margin:0 0 6px;font-size:17px;font-weight:700}.bca-empty p{color:var(--ink-soft);margin:0 0 18px;font-size:13.5px;line-height:1.6}.bca-suggestions{text-align:left;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;display:grid}@media (max-width:640px){.bca-suggestions{grid-template-columns:1fr}}.bca-suggestion{border:1px solid var(--line);background:var(--bg);cursor:pointer;font:inherit;color:var(--ink);border-radius:11px;padding:11px 13px}.bca-suggestion:hover{border-color:var(--indigo)}.bca-suggestion strong{margin-bottom:3px;font-size:12.5px;display:block}.bca-suggestion span{color:var(--ink-soft);font-size:12px;line-height:1.5}.bca-composer{border-top:1px solid var(--line);background:var(--card);padding:10px 14px 12px}.bca-attachments{flex-wrap:wrap;gap:6px;margin-bottom:8px;display:flex}.bca-attachment{background:var(--bg);border:1px solid var(--line);color:var(--ink-soft);border-radius:8px;align-items:center;gap:6px;max-width:240px;padding:4px 8px;font-size:12px;display:flex}.bca-attachment span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.bca-attachment button{cursor:pointer;color:var(--ink-faint);background:0 0;border:none;padding:0;display:grid}.bca-attachment button:hover{color:var(--red)}.bca-input-row{border:1px solid var(--line);background:var(--bg);border-radius:13px;align-items:flex-end;gap:8px;padding:7px 8px 7px 10px;display:flex}.bca-input-row:focus-within{border-color:var(--indigo)}.bca-input{resize:none;color:var(--ink);font:inherit;background:0 0;border:none;outline:none;flex:1;max-height:160px;padding:4px 0;font-size:14px;line-height:1.5}.bca-input::placeholder{color:var(--ink-faint)}.bca-send{background:var(--indigo);color:#fff;cursor:pointer;border:none;border-radius:10px;flex-shrink:0;place-items:center;width:34px;height:34px;display:grid}.bca-send:disabled{background:var(--ink-faint);cursor:not-allowed}.bca-hint{color:var(--ink-faint);flex-wrap:wrap;gap:10px;margin-top:6px;font-size:11px;display:flex}.bca-hint .bca-warn{color:var(--orange)}.bca-typing{align-items:center;gap:4px;display:inline-flex}.bca-typing i{background:var(--ink-faint);border-radius:50%;width:5px;height:5px;animation:1.1s infinite bca-blink}.bca-typing i:nth-child(2){animation-delay:.18s}.bca-typing i:nth-child(3){animation-delay:.36s}@keyframes bca-blink{0%,60%,to{opacity:.25}30%{opacity:1}}.bca-spin{animation:.9s linear infinite bca-rotate}@keyframes bca-rotate{to{transform:rotate(360deg)}}