diff --git a/packages/shared/src/components/PlatformGamePricingField.css b/packages/shared/src/components/PlatformGamePricingField.css
index 7cf807904..476e7ab4a 100644
--- a/packages/shared/src/components/PlatformGamePricingField.css
+++ b/packages/shared/src/components/PlatformGamePricingField.css
@@ -1,82 +1,168 @@
 /*
  * 买断制定价字段：网页发布页与 AGC 发布面板共用同一份表现与文案。
  *
+ * 这里只补平台原语没覆盖的部分，不另造一套控件观感：
+ * - 外壳：`PlatformSubpanel`（`platform` 面 + `xs` 圆角 ≈ 网页 `.game-publish-fieldset` 的
+ *   0.7rem 描边卡片，AGC 侧同族容器是 `.game-distribution-publish-panel__publication`）。
+ * - 付费方式：原生 radio（屏外裁切保留语义 / 键盘 / `.checked`）+ 共享 chip 外观
+ *   （`getPlatformCategoryChipClassName`：未选=浅底描边，选中=实心品牌填充反白）。
+ * - 买断价：`PlatformTextField`，本文件只补右对齐等宽数字、单位留位、错误态与层次。
+ *
  * 选择器统一写成「根类 + 子类」而不是裸类：AGC 发布面板的
- * `.game-distribution-publish-panel__fields label/input` 是后代选择器，裸类会被它
- * 覆盖。提高一档特异性后，无论宿主在前后引入样式，组件外观都由这里唯一决定。
+ * `.game-distribution-publish-panel__fields label/input` 是后代选择器（0,1,1），会盖掉
+ * 原语里的 Tailwind 工具类（0,1,0）。提高一档特异性后，组件外观在两端都由这里唯一决定。
  */
 .platform-game-pricing-field {
   display: grid;
-  gap: 0.55rem;
+  gap: 0.6rem;
   min-width: 0;
-  margin: 0;
-  border: 0;
-  padding: 0;
   font-size: 0.76rem;
   color: var(--platform-text-strong, #3d1f10);
 }
 
-.platform-game-pricing-field > legend {
-  padding: 0 0.3rem;
-  font-size: 0.72rem;
-  font-weight: 700;
-}
-
 .platform-game-pricing-field .platform-game-pricing-field__modes {
   display: flex;
   flex-wrap: wrap;
-  gap: 0.9rem;
+  align-items: center;
+  gap: 0.5rem;
+  min-width: 0;
 }
 
 .platform-game-pricing-field .platform-game-pricing-field__option {
+  position: relative;
   display: inline-flex;
-  align-items: center;
-  gap: 0.35rem;
-  font-size: 0.76rem;
-  font-weight: 500;
-}
-
-.platform-game-pricing-field .platform-game-pricing-field__option input {
-  width: auto;
+  gap: 0;
   min-width: 0;
   margin: 0;
+  cursor: pointer;
+}
+
+/* 原生 radio 只做语义与键盘载体：`display: none` / `visibility: hidden` 会把可聚焦性和
+   读屏可见性一起拿掉，所以用「屏外裁切」隐藏，焦点仍落在它身上。 */
+.platform-game-pricing-field .platform-game-pricing-field__option-input {
+  position: absolute;
+  top: 0;
+  left: 0;
+  box-sizing: border-box;
+  width: 1px;
+  height: 1px;
+  min-width: 0;
+  margin: 0;
+  border: 0;
+  padding: 0;
+  background: transparent;
+  overflow: hidden;
+  white-space: nowrap;
+  clip-path: inset(50%);
+}
+
+/* chip 自带高度 36px（窄屏还会降到 33px），这里统一抬到 44px 触控下限；
+   「免费 / 买断制」字数不同，按内容宽度会一宽一窄，给个共同下限让两枚等宽。 */
+.platform-game-pricing-field .platform-game-pricing-field__option-chip {
+  min-width: 5.5rem;
+  min-height: 2.75rem;
+}
+
+.platform-game-pricing-field
+  .platform-game-pricing-field__option-input:focus-visible
+  + .platform-game-pricing-field__option-chip {
+  outline: 2px solid var(--platform-input-focus-ring, #b6623f);
+  outline-offset: 2px;
+}
+
+.platform-game-pricing-field
+  .platform-game-pricing-field__option-input:disabled
+  + .platform-game-pricing-field__option-chip {
+  cursor: not-allowed;
+  opacity: 0.55;
 }
 
 .platform-game-pricing-field .platform-game-pricing-field__price {
   display: grid;
-  gap: 0.3rem;
-  font-weight: 500;
+  gap: 0.35rem;
+  min-width: 0;
 }
 
-.platform-game-pricing-field .platform-game-pricing-field__price input {
-  box-sizing: border-box;
-  width: 100%;
-  min-width: 0;
-  border: 1px solid var(--platform-surface-border, rgba(226, 203, 184, 0.72));
-  border-radius: 0.7rem;
-  padding: 0.55rem 0.7rem;
-  background: var(--platform-panel-fill, #fffdfa);
+.platform-game-pricing-field .platform-game-pricing-field__price-label {
+  display: block;
   color: var(--platform-text-strong, #3d1f10);
-  font: inherit;
-  font-weight: 500;
+  font-size: 0.75rem;
+  font-weight: 700;
+  line-height: 1.35;
+  cursor: pointer;
+}
+
+.platform-game-pricing-field .platform-game-pricing-field__price-control {
+  position: relative;
+  display: flex;
+  align-items: center;
+  min-width: 0;
+}
+
+/* 边框 / 圆角 / 底色 / 焦点环都来自 `PlatformTextField`（AGC 宿主还会用面板自己的输入框
+   token 覆盖，与同面板其它输入框一致），这里只补三件事：数字右对齐且等宽、给单位留位、错误态。 */
+.platform-game-pricing-field .platform-game-pricing-field__price-input {
+  padding-right: 2.9rem;
+  font-weight: 600;
+  font-variant-numeric: tabular-nums;
+  letter-spacing: 0.01em;
+  text-align: right;
+}
+
+/* 错误态。网页宿主对子面板内的输入框做了统一 remap，且带 `!important`
+   （`src/index.css` 的 `.platform-theme :where(.platform-subpanel …) :where(input…)` 规则，
+   用来把弹窗/子面板里的输入框remap成平台输入框底色）。错误态是必须压过它的例外，所以同权重声明。
+   不改 `box-shadow`：那是宿主的输入高光与焦点环，压掉会让非法字段失去键盘焦点提示。 */
+.platform-game-pricing-field
+  .platform-game-pricing-field__price-input[aria-invalid='true'] {
+  border-color: var(--platform-button-danger-text, #a6402f) !important;
+  background: var(
+    --platform-button-danger-fill,
+    rgba(255, 237, 229, 0.94)
+  ) !important;
+}
+
+.platform-game-pricing-field .platform-game-pricing-field__price-unit {
+  position: absolute;
+  top: 50%;
+  right: 0.75rem;
+  transform: translateY(-50%);
+  color: var(--platform-text-soft, #988476);
+  font-size: 0.72rem;
+  font-weight: 700;
+  line-height: 1;
+  pointer-events: none;
 }
 
 .platform-game-pricing-field
-  .platform-game-pricing-field__price
-  input:focus-visible {
-  border-color: var(--platform-accent, #c7653d);
-  outline: 2px solid rgba(199, 101, 61, 0.2);
-  outline-offset: 1px;
+  .platform-game-pricing-field__price-input[aria-invalid='true']
+  + .platform-game-pricing-field__price-unit {
+  color: var(--platform-button-danger-text, #a6402f);
 }
 
 .platform-game-pricing-field .platform-game-pricing-field__hint {
   color: var(--platform-text-soft, #988476);
   font-size: 0.7rem;
   font-weight: 500;
+  line-height: 1.5;
 }
 
 .platform-game-pricing-field .platform-game-pricing-field__error {
   color: var(--platform-button-danger-text, #a6402f);
-  font-size: 0.7rem;
+  font-size: 0.72rem;
   font-weight: 600;
+  line-height: 1.45;
+}
+
+/* 窄屏（≈390px）：两枚胶囊等分整行，不靠换行兜底，也不出现横向溢出。 */
+@media (max-width: 480px) {
+  .platform-game-pricing-field .platform-game-pricing-field__modes {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+
+  .platform-game-pricing-field .platform-game-pricing-field__option-chip {
+    width: 100%;
+    min-width: 0;
+  }
 }
diff --git a/packages/shared/src/components/PlatformGamePricingField.tsx b/packages/shared/src/components/PlatformGamePricingField.tsx
index 22682c934..5157bc22c 100644
--- a/packages/shared/src/components/PlatformGamePricingField.tsx
+++ b/packages/shared/src/components/PlatformGamePricingField.tsx
@@ -2,10 +2,13 @@ import './PlatformGamePricingField.css';
 
 import { useId } from 'react';
 
+import { getPlatformCategoryChipClassName } from './platformCategoryChipModel';
 import {
   PLATFORM_GAME_MAX_PRICE_MUD_POINTS,
   type PlatformGamePricingMode,
 } from './platformGamePricingModel';
+import { PlatformSubpanel } from './PlatformSubpanel';
+import { PlatformTextField } from './PlatformTextField';
 
 export type PlatformGamePricingFieldProps = {
   /** 付费方式；`free` 等价于 0 泥点。 */
@@ -26,6 +29,11 @@ export type PlatformGamePricingFieldProps = {
  *
  * 网页发布页与 AGC 发布面板共用同一份表现和文案；组件只表达输入 UI，价格校验、提交
  * 与业务状态由使用方持有。上限取自共享常量，两端不各写一份。
+ *
+ * 组成全部复用平台原语：外壳是 `PlatformSubpanel`（与网页发布页 `game-publish-fieldset`
+ * 同族的描边卡片），付费方式是「原生 radio + 标签 chip」，价格是 `PlatformTextField`。
+ * 两个选项是互斥单选，所以语义仍由原生 radio 承载（读屏的单选组、方向键切换、
+ * `.checked` / `.disabled`、label 关联全都照旧），chip 只负责外观。
  */
 export function PlatformGamePricingField({
   mode,
@@ -40,48 +48,92 @@ export function PlatformGamePricingField({
   const errorId = `${useId()}-price-error`;
   const priceInputId = `${useId()}-price-input`;
   return (
-    <fieldset className="platform-game-pricing-field" disabled={disabled}>
-      <legend>付费方式</legend>
-      <div className="platform-game-pricing-field__modes">
+    <PlatformSubpanel
+      as="div"
+      className="platform-game-pricing-field"
+      radius="xs"
+      padding="xs"
+      surface="platform"
+      title="付费方式"
+      titleVariant="strong"
+    >
+      <div
+        className="platform-game-pricing-field__modes"
+        role="radiogroup"
+        aria-label="付费方式"
+      >
         <label className="platform-game-pricing-field__option">
           <input
+            className="platform-game-pricing-field__option-input"
             type="radio"
             name={radioName}
             checked={mode === 'free'}
             disabled={disabled}
             onChange={() => onModeChange('free')}
           />
-          免费
+          <span
+            className={[
+              'platform-game-pricing-field__option-chip',
+              getPlatformCategoryChipClassName(mode === 'free'),
+            ].join(' ')}
+          >
+            免费
+          </span>
         </label>
         <label className="platform-game-pricing-field__option">
           <input
+            className="platform-game-pricing-field__option-input"
             type="radio"
             name={radioName}
             checked={mode === 'paid'}
             disabled={disabled}
             onChange={() => onModeChange('paid')}
           />
-          买断制
+          <span
+            className={[
+              'platform-game-pricing-field__option-chip',
+              getPlatformCategoryChipClassName(mode === 'paid'),
+            ].join(' ')}
+          >
+            买断制
+          </span>
         </label>
       </div>
       {mode === 'paid' ? (
-        <label className="platform-game-pricing-field__price">
-          买断价（泥点）
-          <input
-            id={priceInputId}
-            type="number"
-            inputMode="numeric"
-            value={priceInput}
-            disabled={disabled}
-            aria-invalid={error ? true : undefined}
-            aria-describedby={error ? errorId : undefined}
-            onChange={(event) => onPriceInputChange(event.target.value)}
-          />
+        <div className="platform-game-pricing-field__price">
+          <label
+            className="platform-game-pricing-field__price-label"
+            htmlFor={priceInputId}
+          >
+            买断价（泥点）
+          </label>
+          <div className="platform-game-pricing-field__price-control">
+            <PlatformTextField
+              id={priceInputId}
+              className="platform-game-pricing-field__price-input"
+              type="number"
+              inputMode="numeric"
+              size="md"
+              density="compact"
+              value={priceInput}
+              disabled={disabled}
+              aria-invalid={error ? true : undefined}
+              aria-describedby={error ? errorId : undefined}
+              onChange={(event) => onPriceInputChange(event.target.value)}
+            />
+            {/* 单位是价格的视觉附属：label 里已经写了「（泥点）」，这里对读屏重复一次没有意义。 */}
+            <span
+              className="platform-game-pricing-field__price-unit"
+              aria-hidden="true"
+            >
+              泥点
+            </span>
+          </div>
           <span className="platform-game-pricing-field__hint">
             买断一次永久拥有；价格随本次版本审核通过后生效，最多{' '}
             {PLATFORM_GAME_MAX_PRICE_MUD_POINTS} 泥点
           </span>
-        </label>
+        </div>
       ) : null}
       {error ? (
         <span
@@ -92,6 +144,6 @@ export function PlatformGamePricingField({
           {error}
         </span>
       ) : null}
-    </fieldset>
+    </PlatformSubpanel>
   );
 }