:root{--bg:#f5f7f6;--panel:#ffffff;--panel-soft:#f8faf9;--line:#dce4df;--text:#16211c;--muted:#64736b;--green:#18a957;--green-dark:#0e7a3d;--blue:#2563eb;--amber:#c27a12;--red:#c24141;--shadow:0 12px 34px rgba(24,38,31,0.08)}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Microsoft YaHei,sans-serif}button,input,select,textarea{font:inherit}button{border:0;cursor:pointer}.shell{min-height:100vh;display:grid;grid-template-columns:260px 1fr}.sidebar{position:-webkit-sticky;position:sticky;top:0;height:100vh;padding:22px 18px;background:#101a16;color:#eef8f1}.brand{display:flex;align-items:center;gap:12px;margin-bottom:28px}.brand-mark{width:38px;height:38px;border-radius:8px;display:grid;place-items:center;background:linear-gradient(135deg,var(--green),#79d28d);color:#052d18;font-weight:800}.nav{display:grid;grid-gap:8px;gap:8px}.nav 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