:root{--brand: #2563eb;--bg: #f5f6f8;--line: #e3e6ea;--muted: #6b7280;color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:#14161a}button{font:inherit;cursor:pointer}input,textarea,select{font:inherit}.shell{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;gap:20px;padding:0 20px;height:56px;background:#fff;border-bottom:1px solid var(--line)}.topbar .logo{font-weight:800;font-size:17px;letter-spacing:-.02em}.topbar nav{display:flex;gap:4px;margin-left:8px}.topbar nav button{border:0;background:none;padding:8px 12px;border-radius:8px;color:var(--muted);font-weight:600}.topbar nav button.active{background:#eef2ff;color:var(--brand)}.topbar .spacer{flex:1}.topbar .who{font-size:13px;color:var(--muted)}.topbar .exit{border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 12px}.page{flex:1;overflow:auto;padding:20px}.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}.card+.card{margin-top:16px}.card h2{margin:0 0 14px;font-size:16px}.hint{color:var(--muted);font-size:13px;margin:0 0 12px}.field{display:block;margin-bottom:12px}.field span{display:block;font-size:12px;font-weight:600;color:var(--muted);margin-bottom:5px}.field input,.field textarea,.field select{width:100%;border:1px solid var(--line);border-radius:8px;padding:9px 11px;outline:none;background:#fff}.field input:focus,.field textarea:focus{border-color:var(--brand)}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.btn{border:0;background:var(--brand);color:#fff;padding:9px 16px;border-radius:8px;font-weight:600}.btn:disabled{opacity:.5}.btn.ghost{background:#fff;color:#14161a;border:1px solid var(--line)}.btn.danger{background:#fff;color:#b91c1c;border:1px solid #f3c7c7}.err{color:#b91c1c;font-size:13px;margin:8px 0 0}.ok{color:#15803d;font-size:13px;margin:8px 0 0}.auth{max-width:380px;margin:8vh auto}.auth .switch{margin-top:12px;font-size:13px;color:var(--muted)}.auth .switch button{border:0;background:none;color:var(--brand);padding:0;font-weight:600}.inbox{display:grid;grid-template-columns:320px 1fr;gap:16px;height:100%}.list{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}.filters{display:flex;gap:4px;padding:10px;border-bottom:1px solid var(--line)}.filters button{border:0;background:none;padding:5px 9px;border-radius:7px;font-size:13px;color:var(--muted)}.filters button.active{background:#eef2ff;color:var(--brand);font-weight:600}.list ul{list-style:none;margin:0;padding:0;overflow-y:auto;flex:1}.list li{padding:11px 13px;border-bottom:1px solid #f0f2f4;cursor:pointer}.list li.active{background:#f3f6ff}.list .top{display:flex;justify-content:space-between;align-items:center;gap:8px}.list .name{font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.list .prev{font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:3px}.badge{font-size:11px;padding:2px 7px;border-radius:999px;background:#eef2ff;color:var(--brand);white-space:nowrap}.badge.wait{background:#fff2e0;color:#b45309}.badge.closed{background:#eef0f2;color:#6b7280}.badge.unread{background:var(--brand);color:#fff}.thread{background:#fff;border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;overflow:hidden}.thread .head{padding:12px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}.thread .head .url{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.thread .head .acts{margin-left:auto;display:flex;gap:8px}.thread .log{flex:1;overflow-y:auto;padding:16px;background:#fafbfc;display:flex;flex-direction:column;gap:10px}.msg{max-width:68%;padding:9px 12px;border-radius:12px;font-size:14px;line-height:1.45;white-space:pre-wrap}.msg.visitor{align-self:flex-start;background:#fff;border:1px solid var(--line)}.msg.ai{align-self:flex-end;background:#eef2ff}.msg.operator{align-self:flex-end;background:var(--brand);color:#fff}.msg.system{align-self:center;background:#eef0f2;color:#6b7280;font-size:12px}.msg .meta{font-size:11px;opacity:.6;margin-bottom:2px}.thread .compose{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line)}.thread .compose textarea{flex:1;resize:none;border:1px solid var(--line);border-radius:9px;padding:9px 11px;outline:none}.empty{display:grid;place-items:center;color:var(--muted);height:100%}.kb-item{border:1px solid var(--line);border-radius:10px;padding:12px 14px}.kb-item+.kb-item{margin-top:10px}.kb-item .top{display:flex;justify-content:space-between;align-items:center}.kb-item pre{margin:8px 0 0;white-space:pre-wrap;font:inherit;font-size:13px;color:#333}.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.metric{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}.metric b{display:block;font-size:28px;font-weight:800;letter-spacing:-.02em}.metric span{font-size:13px;color:var(--muted)}.wb-item .top{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.wb-item .url{color:var(--muted);font-size:13px}.wb-item .wb-text{white-space:pre-wrap;margin:10px 0}.wb-item textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:10px;resize:vertical}.wb-item .acts{display:flex;gap:8px;margin-top:10px}.usage{height:8px;background:#e2e8f0;border-radius:999px;overflow:hidden;margin:4px 0 16px}.usage-bar{height:100%;background:var(--brand)}.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}.plan{border:1px solid var(--line);border-radius:12px;padding:14px;display:flex;flex-direction:column;gap:6px;align-items:flex-start}.plan.current{border-color:var(--brand)}.plan .price{font-size:20px;font-weight:700}.plan button{margin-top:auto}.payments{width:100%;margin-top:16px;border-collapse:collapse;font-size:13px}.payments td{padding:6px 8px;border-top:1px solid var(--line);color:var(--muted)}code.snippet{display:block;background:#0f172a;color:#e2e8f0;padding:14px;border-radius:10px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;overflow-x:auto}