diff --git a/package.json b/package.json
index 8ad3b06..beff0fb 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",
+    "prod": "tsc -b && vite build --base calc",
     "lint": "eslint .",
     "preview": "vite preview"
   },
diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml
new file mode 100644
index 0000000..5ed0b5a
--- /dev/null
+++ b/pnpm-workspace.yaml
@@ -0,0 +1,2 @@
+allowBuilds:
+  esbuild: true
diff --git a/src/App.tsx b/src/App.tsx
index ed6127e..616a054 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -26,21 +26,21 @@ const packages: Package[] = [
 const COMBO_DISCOUNT = 5;
 
 const DEPOSIT_RATE = 0.5;
-/** 当「订单金额 ×50%」低于该值，且订单金额超过该值时，定金取该值 */
-const DEPOSIT_FLOOR = 50;
+/** 定金封顶：50% 超过该值时只收该金额，避免大额订单定金过高 */
+const DEPOSIT_CAP = 50;
 
 function formatMoney(n: number): string {
   return n % 1 === 0 ? String(n) : n.toFixed(1);
 }
 
-/** 定金：默认 50%；若 50% 不足 50 元且订单超过 50 元，则定金为 50 元（且不超过订单总额） */
-function computeDeposit(finalPrice: number): { amount: number; isFloor50: boolean; half: number } {
-  if (finalPrice <= 0) return { amount: 0, isFloor50: false, half: 0 };
+/** 定金：默认应付的 50%；若 50% 超过 50 元则封顶 50 元（且不超过订单总额） */
+function computeDeposit(finalPrice: number): { amount: number; isCapped: boolean; half: number } {
+  if (finalPrice <= 0) return { amount: 0, isCapped: false, half: 0 };
   const half = finalPrice * DEPOSIT_RATE;
-  if (finalPrice > DEPOSIT_FLOOR && half < DEPOSIT_FLOOR) {
-    return { amount: Math.min(DEPOSIT_FLOOR, finalPrice), isFloor50: true, half };
+  if (half > DEPOSIT_CAP) {
+    return { amount: Math.min(DEPOSIT_CAP, finalPrice), isCapped: true, half };
   }
-  return { amount: half, isFloor50: false, half };
+  return { amount: half, isCapped: false, half };
 }
 
 function App() {
@@ -70,7 +70,7 @@ function App() {
 
   const hasCombo = selectedSingle.length > 0 && selectedDual.length > 0;
   const finalPrice = hasCombo ? originalTotal - COMBO_DISCOUNT : originalTotal;
-  const { amount: deposit, isFloor50, half: depositHalf } = computeDeposit(finalPrice);
+  const { amount: deposit, isCapped, half: depositHalf } = computeDeposit(finalPrice);
   const balance = finalPrice - deposit;
 
   const totalSinglePhotos = selectedSingle.reduce((sum, p) => sum + p.photos * getQty(p.id), 0);
@@ -218,9 +218,9 @@ function App() {
             <div className="price-row deposit-row">
               <span>
                 定金
-                {isFloor50 ? (
+                {isCapped ? (
                   <span className="deposit-hint">
-                    （{DEPOSIT_RATE * 100}% 为 {formatMoney(depositHalf)} 元，不足 ¥{DEPOSIT_FLOOR}；订单 ＞ ¥{DEPOSIT_FLOOR} 时收 ¥{DEPOSIT_FLOOR} 定金）
+                    （{DEPOSIT_RATE * 100}% 为 {formatMoney(depositHalf)} 元，超过 ¥{DEPOSIT_CAP} 时封顶 ¥{DEPOSIT_CAP}）
                   </span>
                 ) : (
                   <span className="deposit-hint">（应付×{DEPOSIT_RATE * 100}%）</span>
@@ -253,9 +253,9 @@ function App() {
             </p>
             <p className="formula-line">
               <span className="formula-label">定金：</span>
-              {isFloor50 ? (
+              {isCapped ? (
                 <span>
-                  应付 {formatMoney(finalPrice)} × {DEPOSIT_RATE} = {formatMoney(depositHalf)} 元 ＜ ¥{DEPOSIT_FLOOR}，且应付 ＞ ¥{DEPOSIT_FLOOR}，收{" "}
+                  应付 {formatMoney(finalPrice)} × {DEPOSIT_RATE} = {formatMoney(depositHalf)} 元 ＞ ¥{DEPOSIT_CAP}，封顶收{" "}
                   <strong>¥{formatMoney(deposit)}</strong>；尾款 <strong>¥{formatMoney(balance)}</strong>
                 </span>
               ) : finalPrice > 0 ? (
@@ -272,7 +272,7 @@ function App() {
       <footer className="footer">
         <p>💡 单人 1 张 / 双人 1 张 为附加项，不单独接单</p>
         <p>💡 同时选择单人 + 双人套餐可享组合优惠 ¥{formatMoney(COMBO_DISCOUNT)}</p>
-        <p>💡 定金默认应付的 {DEPOSIT_RATE * 100}%；当 {DEPOSIT_RATE * 100}% 不足 ¥{DEPOSIT_FLOOR} 且订单 ＞ ¥{DEPOSIT_FLOOR} 时，定金为 ¥{DEPOSIT_FLOOR}</p>
+        <p>💡 定金默认应付的 {DEPOSIT_RATE * 100}%；当 {DEPOSIT_RATE * 100}% 超过 ¥{DEPOSIT_CAP} 时，定金封顶为 ¥{DEPOSIT_CAP}</p>
       </footer>
     </div>
   );