:root{--bg:#f6f7f9;--surface:#fff;--border:#d9dde3;--text:#1f2430;--muted:#667085;--accent:#1f5fbf;--accent-text:#fff;--customer:#dbe7fb;--assistant:#eef0f3;--danger-bg:#fdecec;--danger-border:#f2b8b5;--danger-text:#8a1c1c;--ok-bg:#e4f5ea;--ok-text:#1b6b3a;--warn-bg:#fff4d6;--warn-text:#7a5200;--radius:8px;--gutter:16px}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:16px;line-height:1.45;overflow-x:hidden}code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.875em}code{word-break:break-all}h1{margin:0 0 4px;font-size:1.4rem}h2{margin:0 0 12px;font-size:1.05rem}p{margin:0 0 8px}.muted{color:var(--muted)}.page{max-width:1100px;padding:20px var(--gutter) 40px;min-width:0;margin:0 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