diff --git a/src/App.tsx b/src/App.tsx
index f965061..c8e2cd8 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -294,7 +294,7 @@ export default function App() {
     const mc = !inventoryFilters.city || s.city === inventoryFilters.city;
     const mb = !inventoryFilters.brand || s.brand === inventoryFilters.brand;
     const mbt = !inventoryFilters.batch || s.batch === inventoryFilters.batch;
-    const mm = !inventoryFilters.model || s.model.toLowerCase().includes(inventoryFilters.model.toLowerCase());
+    const mm = !inventoryFilters.model || s.model === inventoryFilters.model;
     return mr && mc && mb && mbt && mm;
   }), [inventoryData, inventoryFilters]);
 
@@ -336,10 +336,10 @@ export default function App() {
 
   // Derived data for customer section
   const filteredCustomerStats = useMemo(() => customerData.filter((s) => {
-    const mc = !customerFilters.customer || s.customer.toLowerCase().includes(customerFilters.customer.toLowerCase());
+    const mc = !customerFilters.customer || s.customer === customerFilters.customer;
     const mb = !customerFilters.brand || s.brand === customerFilters.brand;
     const md = !customerFilters.department || s.department === customerFilters.department;
-    const mm = !customerFilters.manager || s.manager.toLowerCase().includes(customerFilters.manager.toLowerCase());
+    const mm = !customerFilters.manager || s.manager === customerFilters.manager;
     const mr = !customerFilters.region || s.region === customerFilters.region;
     return mc && mb && md && mm && mr;
   }), [customerData, customerFilters]);
@@ -360,7 +360,7 @@ export default function App() {
 
   // Filtered modal vehicles based on modal filters
   const filteredModalVehicles = useMemo(() => modalVehicles.filter((v) => {
-    const mp = !modalFilters.plateNumber || (v.plateNumber || v.vin || '').toLowerCase().includes(modalFilters.plateNumber.toLowerCase());
+    const mp = !modalFilters.plateNumber || (v.plateNumber || v.vin) === modalFilters.plateNumber;
     const mm = !modalFilters.model || v.model === modalFilters.model;
     const mb = !modalFilters.brand || v.brandLabel === modalFilters.brand;
     const ml = !modalFilters.location || v.location === modalFilters.location;
@@ -368,7 +368,7 @@ export default function App() {
   }), [modalVehicles, modalFilters]);
 
   const filteredModalWeeklyDetail = useMemo(() => modalWeeklyDetail.filter((v) => {
-    const mp = !modalFilters.plateNumber || v.plate_number.toLowerCase().includes(modalFilters.plateNumber.toLowerCase());
+    const mp = !modalFilters.plateNumber || v.plate_number === modalFilters.plateNumber;
     return mp;
   }), [modalWeeklyDetail, modalFilters.plateNumber]);
 
@@ -983,11 +983,10 @@ export default function App() {
                           </div>
                           <div>
                             <label className="text-[10px] text-slate-400 block mb-1">车型名称</label>
-                            <div className="relative">
-                              <Search size={12} className="absolute left-2 top-1/2 -translate-y-1/2 text-slate-400" />
-                              <input type="text" list="dl-inv-model" placeholder="搜索车型..." value={inventoryFilters.model} onChange={(e) => setInventoryFilters({...inventoryFilters, model: e.target.value})} className="w-full text-xs bg-white border border-slate-200 rounded-lg pl-7 pr-2 py-1.5 focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm" />
-                              <datalist id="dl-inv-model">{uniqueInventoryModels.map(m => <option key={m} value={m} />)}</datalist>
-                            </div>
+                            <select value={inventoryFilters.model} onChange={(e) => setInventoryFilters({...inventoryFilters, model: e.target.value})} className="w-full text-xs bg-white border border-slate-200 rounded-lg px-2 py-1.5 focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm cursor-pointer">
+                              <option value="">全部车型</option>
+                              {uniqueInventoryModels.map(m => <option key={m} value={m}>{m}</option>)}
+                            </select>
                           </div>
                         </div>
                       </motion.div>
@@ -1873,11 +1872,10 @@ export default function App() {
                       <div className="space-y-4">
                         <div className="space-y-1.5">
                           <label className="text-[10px] font-bold text-gray-400 uppercase tracking-wider">客户名称</label>
-                          <div className="relative">
-                            <Search className="absolute left-3 top-1/2 -translate-y-1/2 text-gray-400" size={14} />
-                            <input type="text" list="dl-region-customer" placeholder="搜索客户名称..." className="w-full bg-white border border-gray-200 rounded-lg py-2 pl-9 pr-3 text-xs focus:ring-2 focus:ring-slate-500/20 focus:border-slate-500 outline-none transition-all shadow-sm" value={regionFilters.customer} onChange={(e) => setRegionFilters(prev => ({ ...prev, customer: e.target.value }))} />
-                            <datalist id="dl-region-customer">{uniqueCustomerNames.map(c => <option key={c} value={c} />)}</datalist>
-                          </div>
+                          <select className="w-full bg-white border border-gray-200 rounded-lg py-2 px-2 text-xs focus:ring-2 focus:ring-slate-500/20 focus:border-slate-500 outline-none transition-all cursor-pointer shadow-sm" value={regionFilters.customer} onChange={(e) => setRegionFilters(prev => ({ ...prev, customer: e.target.value }))}>
+                            <option value="">所有客户</option>
+                            {uniqueCustomerNames.map(c => <option key={c} value={c}>{c}</option>)}
+                          </select>
                         </div>
 
                         <div className="grid grid-cols-2 gap-3">
@@ -2182,20 +2180,18 @@ export default function App() {
                       <div className="space-y-4">
                         <div className="space-y-1.5">
                           <label className="text-[10px] font-bold text-gray-400 uppercase tracking-wider">客户名称</label>
-                          <div className="relative">
-                            <Search className="absolute left-2 top-1/2 -translate-y-1/2 text-gray-400" size={12} />
-                            <input type="text" list="dl-cust-customer" placeholder="搜索客户..." className="w-full bg-white border border-gray-200 rounded-lg py-2 pl-8 pr-2 text-xs focus:ring-2 focus:ring-emerald-500/20 focus:border-emerald-500 outline-none transition-all shadow-sm" value={customerFilters.customer} onChange={(e) => setCustomerFilters(prev => ({ ...prev, customer: e.target.value }))} />
-                            <datalist id="dl-cust-customer">{uniqueCustomerNames.map(c => <option key={c} value={c} />)}</datalist>
-                          </div>
+                          <select className="w-full bg-white border border-gray-200 rounded-lg py-2 px-2 text-xs focus:ring-2 focus:ring-emerald-500/20 focus:border-emerald-500 outline-none transition-all cursor-pointer shadow-sm" value={customerFilters.customer} onChange={(e) => setCustomerFilters(prev => ({ ...prev, customer: e.target.value }))}>
+                            <option value="">所有客户</option>
+                            {uniqueCustomerNames.map(c => <option key={c} value={c}>{c}</option>)}
+                          </select>
                         </div>
 
                         <div className="space-y-1.5">
                           <label className="text-[10px] font-bold text-gray-400 uppercase tracking-wider">业务负责人</label>
-                          <div className="relative">
-                            <Search className="absolute left-2 top-1/2 -translate-y-1/2 text-gray-400" size={12} />
-                            <input type="text" list="dl-cust-manager" placeholder="搜索负责人..." className="w-full bg-white border border-gray-200 rounded-lg py-2 pl-8 pr-2 text-xs focus:ring-2 focus:ring-emerald-500/20 focus:border-emerald-500 outline-none transition-all shadow-sm" value={customerFilters.manager} onChange={(e) => setCustomerFilters(prev => ({ ...prev, manager: e.target.value }))} />
-                            <datalist id="dl-cust-manager">{uniqueCustomerManagers.map(m => <option key={m} value={m} />)}</datalist>
-                          </div>
+                          <select className="w-full bg-white border border-gray-200 rounded-lg py-2 px-2 text-xs focus:ring-2 focus:ring-emerald-500/20 focus:border-emerald-500 outline-none transition-all cursor-pointer shadow-sm" value={customerFilters.manager} onChange={(e) => setCustomerFilters(prev => ({ ...prev, manager: e.target.value }))}>
+                            <option value="">所有负责人</option>
+                            {uniqueCustomerManagers.map(m => <option key={m} value={m}>{m}</option>)}
+                          </select>
                         </div>
 
                         <div className="grid grid-cols-2 gap-3">
@@ -2469,9 +2465,11 @@ export default function App() {
                     <div className="flex items-center gap-3">
                       {/* Quick Search always visible when collapsed */}
                       {!isModalFilterExpanded && (
-                        <div className="relative w-40 sm:w-64" onClick={(e) => e.stopPropagation()}>
-                          <Search size={12} className="absolute left-2 top-1/2 -translate-y-1/2 text-gray-400" />
-                          <input type="text" value={modalFilters.plateNumber} onChange={(e) => setModalFilters({...modalFilters, plateNumber: e.target.value})} placeholder="快速搜索车牌..." className="w-full text-[11px] pl-7 pr-2 py-1 bg-white border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm" />
+                        <div className="w-40 sm:w-64" onClick={(e) => e.stopPropagation()}>
+                          <select value={modalFilters.plateNumber} onChange={(e) => setModalFilters({...modalFilters, plateNumber: e.target.value})} className="w-full text-[11px] px-2 py-1 bg-white border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm cursor-pointer">
+                            <option value="">快速搜索车牌...</option>
+                            {uniqueModalPlates.map(p => <option key={p} value={p}>{p}</option>)}
+                          </select>
                         </div>
                       )}
                       <motion.div
@@ -2494,11 +2492,10 @@ export default function App() {
                         <div className="grid grid-cols-2 sm:grid-cols-4 gap-3 py-3 border-t border-gray-100 mt-1">
                           <div className="space-y-1">
                             <label className="block text-[10px] text-gray-500 font-medium">车牌号码</label>
-                            <div className="relative">
-                              <Search size={12} className="absolute left-2 top-1/2 -translate-y-1/2 text-gray-400" />
-                              <input type="text" list="dl-modal-plate" placeholder="搜索车牌..." value={modalFilters.plateNumber} onChange={(e) => setModalFilters({...modalFilters, plateNumber: e.target.value})} className="w-full text-[11px] pl-7 pr-2 py-1.5 bg-white border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm" />
-                              <datalist id="dl-modal-plate">{uniqueModalPlates.map(p => <option key={p} value={p} />)}</datalist>
-                            </div>
+                            <select value={modalFilters.plateNumber} onChange={(e) => setModalFilters({...modalFilters, plateNumber: e.target.value})} className="w-full text-[11px] px-2 py-1.5 bg-white border border-gray-200 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm cursor-pointer">
+                              <option value="">全部车牌</option>
+                              {uniqueModalPlates.map(p => <option key={p} value={p}>{p}</option>)}
+                            </select>
                           </div>
                           <div className="space-y-1">
                             <label className="block text-[10px] text-gray-500 font-medium">车型型号</label>