:root{--bg:#f6f7f9;--panel:#fff;--text:#14171a;--muted:#69717a;--line:#e6e8eb;--brand:#121417;--success:#16803c;--warning:#a15c00;--danger:#b42318;--soft:#f0f2f4;--radius:16px}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}.shell{grid-template-columns:250px 1fr;min-height:100vh;display:grid}.sidebar{color:#fff;background:#111316;height:100vh;padding:24px 18px;position:sticky;top:0}.logo{letter-spacing:-.5px;margin-bottom:28px;font-size:22px;font-weight:800}.logo span{opacity:.55;font-weight:500}.nav{gap:8px;display:grid}.nav a,.nav button{color:#d9dde1;text-align:left;background:0 0;border:0;border-radius:10px;width:100%;padding:11px 12px}.nav a:hover,.nav 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