fix(ui): [UI7-2] 统一全局 Design Tokens，移除冗余字体，修复异常色值引用

client/src/pages/ReimbursementsPage.tsx

@@ -97,7 +97,7 @@ export function ReimbursementsPage() {
           <div className="flex flex-col gap-2 sm:flex-row sm:items-center">
             {showProxyOwnerSelector ? (
               <select
-                className="h-11 rounded-lg border border-slate-300 bg-white px-3 py-2 text-sm"
+                className="h-11 rounded-lg border border-zinc-300 bg-white px-3 py-2 text-sm"
                 data-testid="reimbursements-owner-select"
                 onChange={(event) => setProxyOwnerEmployeeId(event.target.value)}
                 value={proxyOwnerEmployeeId}