:root{--bg:#0f172a;--bg-elevated:#1a2438;--bg-card:#1e293b;--border:#2e3b52;--text:#e2e8f0;--text-dim:#94a3b8;--accent:#6366f1;--accent-soft:#6366f126;--danger:#ef4444;--danger-soft:#ef444426;--warn:#f59e0b;--warn-soft:#f59e0b26;--ok:#22c55e;--ok-soft:#22c55e26;--radius:14px;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}button{font-family:inherit}input,select,textarea{background:var(--bg-elevated);border:1px solid var(--border);color:var(--text);border-radius:10px;outline:none;padding:9px 12px;font-family:inherit;font-size:14px}input:focus,select:focus,textarea:focus{border-color:var(--accent)}button{cursor:pointer}.app-shell{flex-direction:column;min-height:100%;display:flex}.topbar{border-bottom:1px solid 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16px;font-size:14px;font-weight:600}.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn.danger{background:var(--danger-soft);color:var(--danger);border-color:#0000}.btn:disabled{opacity:.5;cursor:not-allowed}.fab{background:var(--accent);color:#fff;z-index:20;border:none;border-radius:50%;width:56px;height:56px;font-size:28px;line-height:1;position:fixed;bottom:22px;right:22px;box-shadow:0 8px 24px #6366f173}.sidebar{border-right:1px solid var(--border);flex-shrink:0;width:210px;padding:16px 10px;overflow-y:auto}.sidebar-item{color:var(--text-dim);cursor:pointer;border-radius:10px;justify-content:space-between;align-items:center;gap:8px;margin-bottom:2px;padding:9px 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12px;font-size:13px;font-weight:600;display:inline-flex}.status-badge.ready{background:var(--ok-soft);color:var(--ok)}.status-badge.qr,.status-badge.initializing{background:var(--warn-soft);color:var(--warn)}.status-badge.not_initialized,.status-badge.disconnected,.status-badge.auth_failure{background:var(--danger-soft);color:var(--danger)}.status-badge.demo{background:var(--accent-soft);color:var(--accent)}.demo-banner{background:var(--accent);color:#fff;text-align:center;padding:6px 10px;font-size:12px;font-weight:600}.qr-box{flex-direction:column;align-items:center;gap:10px;padding:16px 0;display:flex}.qr-box img{background:#fff;border-radius:12px;width:220px;height:220px;padding:10px}.toggle-row{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding:10px 0;display:flex}.toggle-row:last-child{border-bottom:none}.toggle-row .label{font-size:14px;font-weight:600}.toggle-row 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