:root{--bg: #f4f6fb;--panel: #ffffff;--border: #e9edf5;--text: #1f2430;--muted: #8a93a6;--primary: #4f46e5}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased}.app-shell{min-height:100vh;background:var(--bg)}.app-sider{position:sticky!important;top:0;height:100vh;background:#fff!important;border-right:1px solid var(--border)}.app-sider .ant-layout-sider-children{display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:10px;padding:22px 20px 16px;text-decoration:none;color:var(--text)}.brand-logo{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,#6366f1,#4f46e5);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;box-shadow:0 4px 10px #4f46e547}.brand-name{font-weight:700;font-size:15px;letter-spacing:.2px}.app-sider .ant-menu{border-inline-end:0!important;padding:4px 10px}.app-sider .ant-menu-item{border-radius:10px;height:42px;margin:4px 0;color:#5b6478}.app-sider .ant-menu-item-selected{background:#eef0ff!important;color:var(--primary)!important;font-weight:600}.sider-footer{margin-top:auto;padding:16px;border-top:1px solid var(--border)}.key-hint{display:flex;flex-direction:column;gap:2px;margin-bottom:10px}.key-label{font-size:11px;color:var(--muted);letter-spacing:.6px;text-transform:uppercase}.key-mask{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:#4b5567;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.app-content{padding:28px 32px 48px;max-width:1440px;width:100%;margin:0 auto}.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:20px;flex-wrap:wrap}.crumb{font-size:12px;letter-spacing:1.4px;color:#6d6ff0;font-weight:600;margin-bottom:6px}.page-head h1{font-size:26px;margin:0 0 8px;font-weight:700;letter-spacing:.2px}.sub{color:var(--muted);font-size:13px}.muted{color:var(--muted);font-size:12.5px}.panel{border-radius:14px!important;border:1px solid var(--border)!important;box-shadow:0 1px 2px #10182808}.panel .ant-card-head{border-bottom:1px solid #f1f3f8;min-height:52px}.panel .ant-card-head-title{font-weight:700}.preview-banner{background:#fdf6e3;border:1px solid #f6e7be;color:#8a6d1a;border-radius:10px;padding:10px 12px;font-size:12.5px;margin-bottom:6px}.kb-grid{display:flex;flex-direction:column;gap:12px}.kb-card{border:1px solid var(--border)!important;border-radius:14px!important;transition:box-shadow .2s,border-color .2s;cursor:pointer}.kb-card:hover{box-shadow:0 6px 18px #1f24300f}.kb-card.selected{border-color:#c7c9ff!important;box-shadow:0 0 0 3px #4f46e514}.kb-card-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.kb-name{font-size:16px;font-weight:700;margin-bottom:4px}.kb-meta{color:var(--muted);font-size:12.5px}.kb-progress{margin-top:14px;display:flex;align-items:center;gap:12px}.kb-progress .ant-progress{flex:1;margin:0}.kb-progress-label{font-size:12px;color:var(--muted);white-space:nowrap}.kb-actions{margin-top:6px;display:flex;gap:4px;border-top:1px dashed #f0f2f8;padding-top:8px}.preview-item{padding:12px 0;border-bottom:1px dashed #eef1f7}.preview-item:last-child{border-bottom:none;padding-bottom:0}.preview-title{font-weight:600;font-size:13.5px;margin-bottom:6px;display:flex;justify-content:space-between;gap:8px}.preview-content{color:#4b5567;font-size:13px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.preview-meta{color:#9aa2b5;font-size:12px;margin-top:6px}.empty-hint{color:var(--muted);font-size:13px;text-align:center;padding:48px 12px}.chunk-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.chunk-index{font-weight:700;font-size:15px}.chunk-content{background:#f8f9fd;border:1px solid #eef1f7;border-radius:10px;padding:16px 18px;font-size:14px;line-height:1.9;white-space:pre-wrap;word-break:break-word;max-height:360px;overflow:auto}.chunk-meta{display:flex;flex-wrap:wrap;gap:14px;color:var(--muted);font-size:12.5px;margin-top:12px}.chunk-nav{display:flex;gap:10px;margin-top:14px}.search-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.search-params{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:12px}.search-params .ant-input-number{width:90px}.result-list{display:flex;flex-direction:column;gap:10px;max-height:520px;overflow:auto;padding-right:2px}.result-item{border:1px solid var(--border);border-radius:12px;padding:12px 14px;cursor:pointer;transition:border-color .15s,background .15s}.result-item:hover{border-color:#c7c9ff;background:#fafbff}.result-head{display:flex;justify-content:space-between;gap:8px;align-items:center;margin-bottom:6px}.result-title{font-weight:600;font-size:13.5px}.result-content{color:#4b5567;font-size:13px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.result-content mark{background:#fff1b8;padding:0 1px;border-radius:2px}.result-meta{display:flex;flex-wrap:wrap;gap:12px;color:#9aa2b5;font-size:12px;margin-top:8px}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px}.doc-file{display:flex;align-items:center;gap:10px}.doc-icon{width:38px;height:38px;border-radius:9px;background:#eef0ff;color:#4f46e5;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.doc-name{font-weight:600;word-break:break-all;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.doc-sub{color:var(--muted);font-size:12px;margin-top:2px}.form-section{font-size:12px;font-weight:600;color:#6b7385;letter-spacing:.4px;margin:6px 0 10px}.upload-strategy{margin-top:12px;background:#f7f8fc;border:1px dashed #e2e6f0;border-radius:10px;padding:10px 12px;color:#6b7385;font-size:12.5px}@media (max-width: 768px){.app-content{padding:18px 14px 40px}}