:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f6f7f9;--panel:#fff;--panel-strong:#eef5f1;--text:#17202a;--muted:#667085;--line:#d9dee7;--accent:#0f766e;--accent-strong:#115e59;--danger:#b42318;--warning:#9a6700}*{box-sizing:border-box}html,body{background:var(--bg);min-height:100%;color:var(--text);margin:0;font-family:Arial,Microsoft YaHei,sans-serif}button,input,select{font:inherit}button{cursor:pointer}.shell{flex-direction:column;min-height:100vh;display:flex}.topbar{border-bottom:1px solid var(--line);background:var(--panel);justify-content:space-between;align-items:center;gap:16px;padding:14px 18px;display:flex}.brand{flex-direction:column;gap:2px;display:flex}.brand strong{font-size:18px}.brand span,.muted{color:var(--muted);font-size:13px}.main{flex:1;gap:16px;width:min(980px,100%);margin:0 auto;padding:18px;display:grid}.login{border:1px solid var(--line);background:var(--panel);border-radius:8px;width:min(420px,100% - 28px);margin:10vh auto;padding:22px}.field{gap:6px;margin:12px 0;display:grid}.field label{color:var(--muted);font-size:13px}.field input,.field select{border:1px solid var(--line);width:100%;color:var(--text);background:#fff;border-radius:6px;padding:10px 12px}.toolbar{border:1px solid var(--line);background:var(--panel);border-radius:8px;grid-template-columns:1fr 1fr auto auto;align-items:end;gap:10px;padding:14px;display:grid}.button{background:var(--accent);color:#fff;border:1px solid #0000;border-radius:6px;justify-content:center;align-items:center;gap:8px;min-height:42px;padding:0 14px;display:inline-flex}.button.secondary{color:var(--text);border-color:var(--line);background:#fff}.button.danger{background:var(--danger)}.button:disabled{cursor:not-allowed;opacity:.55}.status{min-height:42px;color:var(--muted);align-items:center;gap:8px;display:flex}.status-dot{background:var(--warning);border-radius:50%;width:10px;height:10px}.status-dot.live{background:var(--accent)}.conversation{border:1px solid var(--line);background:var(--panel);border-radius:8px;flex-direction:column;min-height:52vh;display:flex;overflow:hidden}.messages{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow:auto}.message{white-space:pre-wrap;overflow-wrap:anywhere;border-radius:8px;max-width:82%;padding:10px 12px;line-height:1.5}.message.user{background:#e7f6f2;align-self:flex-end}.message.assistant{background:#f1f3f6;align-self:flex-start}.message.system{max-width:100%;color:var(--muted);background:0 0;align-self:center;font-size:13px}.error{color:var(--danger);margin-top:10px;font-size:14px}@media (max-width:720px){.toolbar{grid-template-columns:1fr}.topbar{flex-direction:column;align-items:flex-start}.message{max-width:94%}}