:root{--bg:#f3f6fb;--panel:#ffffff;--ink:#1e293b;--muted:#64748b;--line:#e6edf5;--accent:#2f6fed;--ok:#16a34a;--warn:#f59e0b;--bad:#ef4444;--nav:232px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--ink)}body{font-family:Inter,Segoe UI,sans-serif;font-size:14px;line-height:1.45}button,input,textarea{font:inherit;color:inherit}button{transition:transform .14s ease,background-color .14s ease}button:active{transform:scale(.97)}@media (prefers-reduced-motion:reduce){button{transition:none}button:active{transform:none}.spin{animation:none}}a{color:inherit;text-decoration:none}a.text-link{color:var(--accent);text-decoration:underline}.app{display:grid;grid-template-columns:var(--nav) 1fr;min-height:100vh}nav{background:var(--panel);border-right:1px solid var(--line);padding:22px 16px;position:-webkit-sticky;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}nav .brand{display:flex;align-items:center;gap:10px;font-weight:600;margin:0 0 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