:root{--bg:#f6f7f4;--panel:#fff;--panel-strong:#f0f5ef;--ink:#1d2520;--muted:#667067;--line:#dfe6dc;--green:#178b57;--green-strong:#0f6d43;--amber:#bc7a12;--red:#b23a3a;--blue:#2d68a8;--shadow:0 18px 46px #16231b14}*{box-sizing:border-box}html,body{min-height:100%;color:var(--ink);background:var(--bg);margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.app-shell{grid-template-columns:260px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{border-right:1px solid var(--line);background:#fbfcf8;height:100vh;padding:22px 18px;position:sticky;top:0}.brand{align-items:center;gap:12px;margin-bottom:26px;font-weight:800;display:flex}.brand-mark{color:#fff;background:var(--green);border-radius:8px;place-items:center;width:38px;height:38px;display:grid}.nav{gap:4px;display:grid}.nav a{color:#334039;border-radius:7px;justify-content:space-between;align-items:center;min-height:38px;padding:8px 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