diff --git a/mpuniapp/pages/portal/index.uvue b/mpuniapp/pages/portal/index.uvue
index 12e7583..6040ffd 100644
--- a/mpuniapp/pages/portal/index.uvue
+++ b/mpuniapp/pages/portal/index.uvue
@@ -213,11 +213,11 @@
       <text class="ai-entry-text">{{ textOf('card.ai_chat') }}</text>
     </view>
 
-    <!-- 5. 单屏唯一定位主 CTA (悬浮动态胶囊：主人态分享名片 / 访客态保存到通讯录) -->
+    <!-- 5. 靠右侧核心主 CTA (图标形式：主人态分享出示 / 访客态保存到通讯录) -->
     <view v-if="state.card != null" class="portal-cta-bar">
-      <button class="primary-cta-btn" @click="handlePrimaryCta">
-        <text class="primary-cta-btn-text">{{ primaryCtaLabel }}</text>
-        <text class="primary-cta-btn-arrow">↗</text>
+      <button class="primary-cta-btn" :title="primaryCtaLabel" @click="handlePrimaryCta">
+        <text v-if="isOwner" class="primary-cta-btn-icon">↗</text>
+        <text v-else class="primary-cta-btn-icon">↓</text>
       </button>
     </view>
 
@@ -1277,52 +1277,41 @@ onUnload(() => {
   color: var(--oc-ai, #7C5CFF);
 }
 
-/* 5. 单屏唯一定位主 CTA (现代极简悬浮胶囊，透气留白，告别死板通栏横条) */
+/* 5. 靠右侧核心主 CTA (图标形式，正圆微光晕 FAB，彻底释放屏幕中下部空间) */
 .portal-cta-bar {
   position: fixed;
-  left: 0;
-  right: 0;
+  inset-inline-end: 16px;
   bottom: calc(16px + var(--window-bottom, 0px) + env(safe-area-inset-bottom, 0px));
-  display: flex;
-  flex-direction: row;
-  justify-content: center;
-  align-items: center;
-  pointer-events: none;
   z-index: 100;
+  display: flex;
+  align-items: center;
+  justify-content: center;
 }
 .primary-cta-btn {
-  pointer-events: auto;
-  height: 44px;
-  min-height: 44px;
-  width: auto;
-  min-width: 150px;
-  max-width: 220px;
-  padding: 0 24px;
+  width: 48px;
+  height: 48px;
+  min-width: 48px;
+  min-height: 48px;
+  padding: 0;
   background: var(--oc-primary-gradient, linear-gradient(135deg, #00A3FF 0%, #0B63E5 100%));
   border-radius: var(--oc-radius-pill, 9999px);
-  box-shadow: 0 8px 24px rgba(0, 136, 255, 0.26), 0 2px 6px rgba(11, 99, 229, 0.12);
+  box-shadow: 0 8px 24px rgba(0, 136, 255, 0.35), 0 2px 6px rgba(11, 99, 229, 0.16);
   border: 1px solid rgba(255, 255, 255, 0.25);
   display: flex;
-  flex-direction: row;
   align-items: center;
   justify-content: center;
   cursor: pointer;
-  transition: opacity 150ms cubic-bezier(0.2, 0.8, 0.2, 1);
+  transition: opacity 150ms cubic-bezier(0.2, 0.8, 0.2, 1), transform 150ms cubic-bezier(0.2, 0.8, 0.2, 1);
 }
 .primary-cta-btn:active {
   opacity: 0.85;
+  transform: scale(0.95);
 }
-.primary-cta-btn-text {
+.primary-cta-btn-icon {
   color: #FFFFFF;
-  font-size: 14px;
-  font-weight: 600;
-  letter-spacing: 0.4px;
-}
-.primary-cta-btn-arrow {
-  color: rgba(255, 255, 255, 0.85);
-  font-size: 13px;
-  font-weight: 600;
-  margin-inline-start: 4px;
+  font-size: 20px;
+  font-weight: 700;
+  line-height: 1;
 }
 
 /* 6. 商务预约排期卡片与抽屉样式 (Bento Grid Appointment & Bottom Sheet) */
diff --git a/mpuniapp/tests/portal-owner-mode.test.ts b/mpuniapp/tests/portal-owner-mode.test.ts
index e7f773d..7531ea5 100644
--- a/mpuniapp/tests/portal-owner-mode.test.ts
+++ b/mpuniapp/tests/portal-owner-mode.test.ts
@@ -168,24 +168,25 @@ test('5. 多语言文案解析与主客态映射审查', () => {
   );
 });
 
-test('6. 主 CTA 悬浮胶囊形态与呼吸感视觉规范审查', () => {
+test('6. 主 CTA 靠右侧图标形式与悬浮触控规范审查', () => {
   const content = fs.readFileSync(portalUvuePath, 'utf-8');
   assert.ok(
+    content.includes('inset-inline-end: 16px') || content.includes('right: 16px'),
+    '主 CTA 必须靠右侧布局 (inset-inline-end: 16px)'
+  );
+  assert.ok(
+    content.includes('border-radius: 50%') ||
     content.includes('border-radius: var(--oc-radius-pill, 9999px);') ||
     content.includes('border-radius: 9999px;'),
-    'primary-cta-btn 必须使用胶囊 Pill 圆角 (9999px) 替代沉重矩形'
+    '主 CTA 必须使用圆形或大圆角图标形态'
   );
   assert.ok(
-    content.includes('max-width: 220px') || content.includes('min-width: 150px'),
-    'primary-cta-btn 严禁撑满全屏，必须使用精致收窄胶囊尺寸'
+    content.includes('height: 48px') || content.includes('min-height: 44px'),
+    '主 CTA 触控尺寸必须满足规范 (>= 44px)'
   );
   assert.ok(
-    content.includes('.portal-cta-bar') && content.includes('pointer-events: none;'),
-    'portal-cta-bar 容器必须开启 pointer-events: none 以实现居中悬浮呼吸感'
-  );
-  assert.ok(
-    content.includes('.primary-cta-btn') && content.includes('pointer-events: auto;'),
-    'primary-cta-btn 自身必须显式开启 pointer-events: auto'
+    content.includes('env(safe-area-inset-bottom') && content.includes('var(--window-bottom'),
+    '主 CTA 必须适配视口安全区与 TabBar 避让'
   );
 });