:root{--bg: #f7f5fb;--panel: #fff;--line: #e4dff0;--text: #2a2438;--muted: #8b829e;--accent: #6b4fc4;--accent-soft: #f0ebfa;--warn: #b8562f;--ok: #2f7d55}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.55 -apple-system,Segoe UI,Roboto,sans-serif}h1{font-size:21px;margin:0 0 18px}h2{font-size:15px;margin:0 0 8px}section{margin-bottom:30px}code{background:var(--accent-soft);padding:1px 6px;border-radius:4px;font-size:13px}a{color:var(--accent)}.layout{display:grid;grid-template-columns:232px 1fr;min-height:100vh}.sidebar{background:var(--panel);border-right:1px solid var(--line);padding:18px 12px;display:flex;flex-direction:column}.brand{font-size:17px;font-weight:600;color:var(--accent);padding:0 10px 16px}.nav-item{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 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var(--line)}.rag-master.on{background:var(--accent-soft);border-color:var(--accent)}.rag-master.off{background:#fbeaea;border-color:#e0b4b4}.rag-master .switch b{font-size:14px}.kb-kind-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:14px 0 4px}.kb-kind-head .kb-kind{margin:0;display:inline-flex;align-items:center;gap:8px}.kb-kind-head .muted{margin-right:auto}.kb-badge{font-size:10px;text-transform:uppercase;letter-spacing:.4px;padding:1px 7px;border-radius:999px}.kb-badge.live{color:var(--accent);background:var(--accent-soft)}.kb-badge.staged{color:#9a6a00;background:#fbf0d6}.kb-experiment{margin:10px 0;padding:10px 14px;border:1px solid var(--line);border-radius:8px}.kb-experiment summary{cursor:pointer;font-weight:500;font-size:14px}.kb-ab{border-collapse:collapse;margin:8px 0;font-size:13px}.kb-ab th,.kb-ab td{padding:4px 12px 4px 0;text-align:left}.kb-ab th{color:var(--muted);font-weight:500;border-bottom:1px solid var(--line)}.kb-ab td{font-variant-numeric:tabular-nums}