:root{--bg:#f5f6fa;--panel:#fff;--ink:#0f172a;--muted:#64748b;--line:#e5e7ef;--brand:#6366f1;--brand-d:#4f46e5;--brand-l:#eef0ff;--green:#10b981;--red:#ef4444;--amber:#f59e0b;--blue:#3b82f6;--radius:12px;--shadow:0 1px 2px rgba(15,23,42,.06),0 4px 14px rgba(15,23,42,.05)}*{box-sizing:border-box}html,body{margin:0;height:100%}body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.45}h1{font-size:24px;margin:0}h2{font-size:18px;margin:0}h3{font-size:15px;margin:0}p{margin:4px 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