:root{--ink:#173a34;--paper:#f4f6ef;--card:#fffdf7;--accent:#e76f51;--gold:#e9c46a;--muted:#6e7c77;--line:#d8ddd5;--green:#2a9d8f;--shadow:0 16px 50px #173a3414}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif}.app-shell{grid-template-columns:250px 1fr;min-height:100vh;display:grid}.sidebar{background:var(--ink);color:#fff;flex-direction:column;height:100vh;padding:28px 20px;display:flex;position:sticky;top:0}.brand{align-items:center;gap:12px;margin-bottom:44px;display:flex}.brand-mark{width:44px;height:44px;color:var(--gold);border:1px solid #fff6;place-items:center;font-family:Georgia,serif;font-weight:700;display:grid}.brand strong,.brand small{display:block}.brand small{opacity:.62;margin-top:3px}.sidebar nav{gap:6px;display:grid}.sidebar nav button{color:#ffffffb0;text-align:left;font:inherit;cursor:pointer;background:0 0;border:0;border-radius:8px;padding:13px 16px}.sidebar nav 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