diff --git a/src/shared/components/InboundCodeRelationshipDrawer.test.ts b/src/shared/components/InboundCodeRelationshipDrawer.test.ts
index b84e1163..a0321eab 100644
--- a/src/shared/components/InboundCodeRelationshipDrawer.test.ts
+++ b/src/shared/components/InboundCodeRelationshipDrawer.test.ts
@@ -3,6 +3,7 @@ import { resolve } from 'node:path'
 import { defineComponent } from 'vue'
 import { flushPromises, mount } from '@vue/test-utils'
 import { beforeEach, describe, expect, it, vi } from 'vitest'
+import ElementPlus from 'element-plus'
 import {
   getLoadingAssociationSummary,
   getOverseasInboundCodeRelationship,
@@ -140,11 +141,40 @@ describe('InboundCodeRelationshipDrawer contract', () => {
   })
 
   it('keeps sections and status badges within the drawer at desktop and narrow widths', () => {
-    expect(source).toContain('.relationship-sections{display:grid;width:100%;min-width:0')
+    expect(source).toContain('class="inbound-relationship-drawer"')
+    expect(source).toContain(':global(.inbound-relationship-drawer .el-drawer__body){box-sizing:border-box;min-width:0;max-width:100%;overflow-x:hidden;padding-right:calc(var(--el-drawer-padding-primary) + 8px)}')
+    expect(source).toContain(':global(.inbound-relationship-drawer .app-drawer__body){box-sizing:border-box;width:auto;max-width:100%;min-width:0;overflow-x:hidden}')
+    expect(source).toContain('.relationship-sections{display:grid;width:auto;max-width:100%;min-width:0;grid-template-columns:minmax(0,1fr)')
     expect(source).toContain('.relationship-section{box-sizing:border-box;width:100%;min-width:0')
     expect(source).toContain('flex-wrap:wrap')
     expect(source).toContain('.relationship-section h3{flex:1 1 auto;min-width:0')
     expect(source).toContain('.relationship-status{flex:0 0 auto;max-width:100%}')
-    expect(source).toContain('.inventory-table{max-width:100%')
+    expect(source).toContain('.inventory-table{width:100%;max-width:100%;min-width:0')
+  })
+
+  it('mounts the containment class through the real AppDrawer and Element Plus drawer DOM', async () => {
+    const wrapper = mount(InboundCodeRelationshipDrawer, {
+      attachTo: document.body,
+      props: {
+        modelValue: true,
+        inboundCode: 'NYEXX2608300027',
+        canReadBase: true,
+        canReadLoading: true,
+        canReadOverseas: true,
+      },
+      global: { plugins: [ElementPlus] },
+    })
+    await flushPromises()
+
+    const drawer = document.querySelector('.inbound-relationship-drawer')
+    const elementBody = drawer?.querySelector('.el-drawer__body')
+    const appBody = drawer?.querySelector('.app-drawer__body')
+    expect(drawer).not.toBeNull()
+    expect(elementBody).not.toBeNull()
+    expect(appBody).not.toBeNull()
+    expect(appBody?.querySelectorAll('.relationship-section')).toHaveLength(3)
+    expect(appBody?.querySelectorAll('.relationship-status')).toHaveLength(3)
+
+    wrapper.unmount()
   })
 })
diff --git a/src/shared/components/InboundCodeRelationshipDrawer.vue b/src/shared/components/InboundCodeRelationshipDrawer.vue
index ae7a9d05..bce1f6c4 100644
--- a/src/shared/components/InboundCodeRelationshipDrawer.vue
+++ b/src/shared/components/InboundCodeRelationshipDrawer.vue
@@ -47,7 +47,7 @@ watch(() => [props.modelValue, props.inboundCode, props.canReadBase, props.canRe
 </script>
 
 <template>
-  <AppDrawer :model-value="modelValue" :title="`入仓码关联数据 · ${normalizedCode || '未提供'}`" size="min(860px, 94vw)" :loading="loading" :show-footer="false" destroy-on-close @update:model-value="close">
+  <AppDrawer class="inbound-relationship-drawer" :model-value="modelValue" :title="`入仓码关联数据 · ${normalizedCode || '未提供'}`" size="min(860px, 94vw)" :loading="loading" :show-footer="false" destroy-on-close @update:model-value="close">
     <el-alert v-if="!normalizedCode" type="warning" :closable="false" show-icon title="缺少入仓码，已停止查询关联数据。" />
     <el-alert v-else-if="!canReadBase && !canReadLoading && !canReadOverseas" type="warning" :closable="false" show-icon title="当前账号无入仓关联数据查看权限。" />
 
@@ -91,5 +91,5 @@ watch(() => [props.modelValue, props.inboundCode, props.canReadBase, props.canRe
 </template>
 
 <style scoped>
-.relationship-sections{display:grid;width:100%;min-width:0;gap:14px}.relationship-section{box-sizing:border-box;width:100%;min-width:0;border:1px solid var(--cc-border);border-radius:10px;padding:14px;background:var(--cc-surface)}.relationship-section>header{display:flex;min-width:0;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 12px;margin-bottom:12px}.relationship-section h3{flex:1 1 auto;min-width:0;margin:0;font-size:15px}.relationship-status{flex:0 0 auto;max-width:100%}.compact-facts{display:grid;min-width:0;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0;background:var(--cc-border)}.compact-facts>div{display:grid;min-width:0;grid-template-columns:92px minmax(0,1fr);gap:8px;padding:9px 10px;background:var(--cc-surface)}.compact-facts dt{color:var(--cc-muted)}.compact-facts dd{min-width:0;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.compact-facts small{display:block;overflow:hidden;color:var(--cc-muted);margin-top:2px;text-overflow:ellipsis;white-space:nowrap}.compact-list{display:grid;min-width:0;grid-template-columns:92px minmax(0,1fr);gap:8px;padding:9px 10px;border-top:1px solid var(--cc-border)}.compact-list span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.inventory-table{max-width:100%;margin-top:10px}@media(max-width:720px){.compact-facts{grid-template-columns:1fr}}
+:global(.inbound-relationship-drawer .el-drawer__body){box-sizing:border-box;min-width:0;max-width:100%;overflow-x:hidden;padding-right:calc(var(--el-drawer-padding-primary) + 8px)}:global(.inbound-relationship-drawer .app-drawer__body){box-sizing:border-box;width:auto;max-width:100%;min-width:0;overflow-x:hidden}.relationship-sections{display:grid;width:auto;max-width:100%;min-width:0;grid-template-columns:minmax(0,1fr);gap:14px}.relationship-section{box-sizing:border-box;width:100%;min-width:0;border:1px solid var(--cc-border);border-radius:10px;padding:14px;background:var(--cc-surface)}.relationship-section>header{display:flex;min-width:0;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 12px;margin-bottom:12px}.relationship-section h3{flex:1 1 auto;min-width:0;margin:0;font-size:15px}.relationship-status{flex:0 0 auto;max-width:100%}.compact-facts{display:grid;min-width:0;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0;background:var(--cc-border)}.compact-facts>div{display:grid;min-width:0;grid-template-columns:92px minmax(0,1fr);gap:8px;padding:9px 10px;background:var(--cc-surface)}.compact-facts dt{color:var(--cc-muted)}.compact-facts dd{min-width:0;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.compact-facts small{display:block;overflow:hidden;color:var(--cc-muted);margin-top:2px;text-overflow:ellipsis;white-space:nowrap}.compact-list{display:grid;min-width:0;grid-template-columns:92px minmax(0,1fr);gap:8px;padding:9px 10px;border-top:1px solid var(--cc-border)}.compact-list span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.inventory-table{width:100%;max-width:100%;min-width:0;margin-top:10px}@media(max-width:720px){.compact-facts{grid-template-columns:1fr}}
 </style>