diff --git a/docs/PRD.md b/docs/PRD.md
index bdfa08b4..767d806a 100644
--- a/docs/PRD.md
+++ b/docs/PRD.md
@@ -94,7 +94,7 @@ TauriTavern将逐步实现SillyTavern的所有核心功能，包括但不限于
 ### 3.2 兼容性要求
 
 - 支持Windows 10+, macOS 10.15+, 主流Linux发行版
-- 支持iOS 15+, Android 10+
+- 支持iOS 16+, Android 10+
 - 保持与SillyTavern扩展和插件的兼容性
 - 支持导入/导出SillyTavern数据
 
diff --git a/docs/iOSDevelopment.md b/docs/iOSDevelopment.md
index 43494945..f53041b2 100644
--- a/docs/iOSDevelopment.md
+++ b/docs/iOSDevelopment.md
@@ -39,7 +39,7 @@ WKWebView 内部是 `UIScrollView` 承载 Web 内容；在默认行为下，iOS
 
 实现位置：
 
-- iOS 配置入口：`src-tauri/src/infrastructure/ios_webview.rs`
+- iOS 配置入口：`src-tauri/src/infrastructure/ios_webview.rs` 的 `configure_main_wkwebview()`
 - 调用时机：`src-tauri/src/lib.rs`（主窗口 build 后立刻调用）
 
 ### 1.5 验收建议
@@ -148,3 +148,25 @@ iOS 上“文件选择 / 文件导出”必须交给系统级能力完成：
 - 下载桥：`src/tauri/main/download-bridge.js`
 - 导出反馈：`src/scripts/download-feedback.js`
 - iOS share 命令：`src-tauri/src/presentation/commands/ios_file_bridge_commands.rs`
+
+## 4. WKWebView Fullscreen API（iOS 16+）
+
+### 4.1 现象
+
+- 角色卡或扩展内的同源 iframe 页面在桌面/Android 可进入全屏，但 iOS 上 `requestFullscreen()` / `webkitRequestFullscreen()` 不生效。
+
+### 4.2 根因
+
+- 问题不在前端按钮或 JS-Slash-Runner 事件语义，而在宿主 WKWebView 默认没有开启 element fullscreen 能力。
+- TauriTavern 的兼容目标仍然是让上游页面继续使用标准浏览器 Fullscreen API，而不是引入额外 JS-native bridge。
+
+### 4.3 已落地方案
+
+- 继续复用 `src-tauri/src/infrastructure/ios_webview.rs` 的主 WebView 配置入口，在 `configure_main_wkwebview()` 内统一完成两类 native 配置：
+  - 关闭 `scrollView` 的 safe-area 自动 inset 调整；
+  - 开启 `WKPreferences.setElementFullscreenEnabled(true)`。
+- 这样角色卡、JS-Slash-Runner、同源 iframe 的 fullscreen 事件、退出语义和上游契约保持一致，宿主只补齐平台能力，不改前端行为。
+
+### 4.4 支持边界
+
+- 该能力依赖 iOS 16 的 app-embedded WKWebView Fullscreen API，因此项目 iOS 支持线提升到 `iOS 16+`。
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 75362fb5..ded6eafc 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -19,7 +19,7 @@ tauri-build = { version = "2.5.5", features = [] }
 serde_json = "1"
 
 [dependencies]
-tauri = { version = "2.10.2", features = ["protocol-asset", "tray-icon"] }
+tauri = { version = "2.10.2", features = ["macos-private-api", "protocol-asset", "tray-icon"] }
 tauri-plugin-barcode-scanner = "2.4.4"
 tauri-plugin-opener = "2.5.3"
 tauri-plugin-fs = "2.4.5"
diff --git a/src-tauri/gen/apple/Podfile b/src-tauri/gen/apple/Podfile
index efd6ceb8..d9002ddc 100644
--- a/src-tauri/gen/apple/Podfile
+++ b/src-tauri/gen/apple/Podfile
@@ -1,7 +1,7 @@
 # Uncomment the next line to define a global platform for your project
 
 target 'tauritavern_iOS' do
-platform :ios, '14.0'
+platform :ios, '16.0'
   # Pods for tauritavern_iOS
 end
 
diff --git a/src-tauri/gen/apple/project.yml b/src-tauri/gen/apple/project.yml
index 860fccf2..8c20daee 100644
--- a/src-tauri/gen/apple/project.yml
+++ b/src-tauri/gen/apple/project.yml
@@ -2,7 +2,7 @@ name: tauritavern
 options:
   bundleIdPrefix: com.tauritavern.client
   deploymentTarget:
-    iOS: 14.0
+    iOS: 16.0
 fileGroups: [../../src]
 configs:
   debug: debug
diff --git a/src-tauri/gen/apple/tauritavern.xcodeproj/project.pbxproj b/src-tauri/gen/apple/tauritavern.xcodeproj/project.pbxproj
index 090ecd50..b3cafc1b 100644
--- a/src-tauri/gen/apple/tauritavern.xcodeproj/project.pbxproj
+++ b/src-tauri/gen/apple/tauritavern.xcodeproj/project.pbxproj
@@ -970,7 +970,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 16.0;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
@@ -1059,7 +1059,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 16.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
 				PRODUCT_NAME = "$(TARGET_NAME)";
diff --git a/src-tauri/src/infrastructure/ios_webview.rs b/src-tauri/src/infrastructure/ios_webview.rs
index 1c20d353..a288a86d 100644
--- a/src-tauri/src/infrastructure/ios_webview.rs
+++ b/src-tauri/src/infrastructure/ios_webview.rs
@@ -1,12 +1,9 @@
 use tauri::WebviewWindow;
 
-pub fn disable_wkwebview_content_inset_adjustment(window: &WebviewWindow) -> tauri::Result<()> {
+/// Applies the iOS WKWebView host policy required by TauriTavern's browser contract.
+pub fn configure_main_wkwebview(window: &WebviewWindow) -> tauri::Result<()> {
     window.with_webview(|webview| unsafe {
-        use objc2::rc::Retained;
         use objc2::runtime::AnyObject;
-        use objc2_ui_kit::{
-            UIEdgeInsetsZero, UIScrollView, UIScrollViewContentInsetAdjustmentBehavior,
-        };
 
         let wkwebview_ptr = webview.inner();
         assert!(
@@ -15,12 +12,31 @@ pub fn disable_wkwebview_content_inset_adjustment(window: &WebviewWindow) -> tau
         );
 
         let wkwebview = &*wkwebview_ptr.cast::<AnyObject>();
-        let scroll_view: Retained<UIScrollView> = objc2::msg_send![wkwebview, scrollView];
-
-        scroll_view
-            .setContentInsetAdjustmentBehavior(UIScrollViewContentInsetAdjustmentBehavior::Never);
-        scroll_view.setContentInset(UIEdgeInsetsZero);
-        scroll_view.setScrollIndicatorInsets(UIEdgeInsetsZero);
-        scroll_view.setAutomaticallyAdjustsScrollIndicatorInsets(false);
+        disable_content_inset_adjustment(wkwebview);
+        enable_element_fullscreen(wkwebview);
     })
 }
+
+unsafe fn disable_content_inset_adjustment(wkwebview: &objc2::runtime::AnyObject) {
+    use objc2::rc::Retained;
+    use objc2_ui_kit::{
+        UIEdgeInsetsZero, UIScrollView, UIScrollViewContentInsetAdjustmentBehavior,
+    };
+
+    let scroll_view: Retained<UIScrollView> = objc2::msg_send![wkwebview, scrollView];
+    let zero_insets = unsafe { UIEdgeInsetsZero };
+    scroll_view
+        .setContentInsetAdjustmentBehavior(UIScrollViewContentInsetAdjustmentBehavior::Never);
+    scroll_view.setContentInset(zero_insets);
+    scroll_view.setScrollIndicatorInsets(zero_insets);
+    scroll_view.setAutomaticallyAdjustsScrollIndicatorInsets(false);
+}
+
+unsafe fn enable_element_fullscreen(wkwebview: &objc2::runtime::AnyObject) {
+    use objc2::rc::Retained;
+    use objc2::runtime::AnyObject;
+
+    let configuration: Retained<AnyObject> = objc2::msg_send![wkwebview, configuration];
+    let preferences: Retained<AnyObject> = objc2::msg_send![&*configuration, preferences];
+    let _: () = objc2::msg_send![&*preferences, setElementFullscreenEnabled: true];
+}
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index cb89853b..7f792c69 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -22,6 +22,7 @@ use presentation::web_resources::third_party_endpoint::handle_third_party_asset_
 use presentation::web_resources::thumbnail_endpoint::handle_thumbnail_web_request;
 use presentation::web_resources::user_data_endpoint::handle_user_data_asset_web_request;
 use tauri::Manager;
+#[cfg(any(target_os = "macos", windows, target_os = "linux"))]
 use tauri_plugin_opener::OpenerExt;
 
 #[cfg(any(target_os = "macos", windows, target_os = "linux"))]
@@ -264,7 +265,7 @@ fn create_main_window(
     let window = builder.build()?;
 
     #[cfg(target_os = "ios")]
-    infrastructure::ios_webview::disable_wkwebview_content_inset_adjustment(&window)?;
+    infrastructure::ios_webview::configure_main_wkwebview(&window)?;
 
     #[cfg(any(target_os = "macos", windows, target_os = "linux"))]
     {
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index 9de94732..032e31fd 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -8,6 +8,7 @@
     "removeUnusedCommands": true
   },
   "app": {
+    "macOSPrivateApi": true,
     "withGlobalTauri": true,
     "windows": [
       {