html,body,#root{margin:0;min-height:100%;font-family:Microsoft YaHei,system-ui}.shell{min-height:100vh}.brand{height:72px;padding:18px 20px;color:#fff;font-size:16px;font-weight:600}.brand small{display:block;font-size:12px;font-weight:400;color:#aabbd0;margin-top:3px}.header{background:#fff!important;border-bottom:1px solid #e6ebf1;padding:0 24px!important;font-size:18px;display:flex;justify-content:space-between}.health{font-size:13px;color:#3b9551}.content{padding:24px;background:#f4f7fb}.toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.toolbar h2{margin:0 0 5px}.toolbar span{color:#6b7a90}.qa{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:16px}.chat{min-height:620px}.messages{min-height:480px;background:#f7f9fc;padding:20px;margin-bottom:14px}.bubble{padding:12px 14px;border-radius:10px;margin-bottom:14px;max-width:82%}.bubble.user{margin-left:auto;background:#e7f1ff}.bubble.bot{background:#fff;border:1px solid #e1e7ef}.empty{color:#7c8898;text-align:center;padding-top:180px}.piece{margin:10px 0}.piece pre,.bubble pre,.debug pre{white-space:pre-wrap;font-family:inherit;max-height:280px;overflow:auto}.debug .ant-tabs-nav{margin-top:14px}@media(max-width:850px){.qa{grid-template-columns:1fr}.shell>.ant-layout-sider{display:none}.content{padding:14px}}