diff --git a/code/th_01_base.js b/code/th_01_base.js
index 8d67eac..54ae3ac 100644
--- a/code/th_01_base.js
+++ b/code/th_01_base.js
@@ -100,9 +100,9 @@ var ConfigValidator = {
     LONG_PRESS_TRIGGERED_MOVE_SLOP_DP: { type: "int", min: 8, max: 80, default: 28 },
     LONG_PRESS_VIBRATE_MS: { type: "int", min: 10, max: 100, default: 40 },
     CLICK_SLOP_DP: { type: "int", min: 2, max: 20, default: 6 },
-    TOOLAPP_BACK_EDGE_WIDTH_DP: { type: "int", min: 1, max: 120, default: 48 },
-    ENABLE_TOOLAPP_INNER_BACK_STRIPS: { type: "bool", default: true },
-    ENABLE_TOOLAPP_SCREEN_BACK_STRIPS: { type: "bool", default: false },
+    TOOLAPP_BACK_EDGE_WIDTH_DP: { type: "int", min: 1, max: 120, default: 24 },
+    ENABLE_TOOLAPP_INNER_BACK_STRIPS: { type: "bool", default: false },
+    ENABLE_TOOLAPP_SCREEN_BACK_STRIPS: { type: "bool", default: true },
     TOOLAPP_BACK_COMMIT_DISTANCE_DP: { type: "int", min: 1, max: 480, default: 72 },
     TOOLAPP_BACK_PROGRESS_DISTANCE_DP: { type: "int", min: 1, max: 720, default: 180 },
 
@@ -736,9 +736,9 @@ var ConfigManager = {
         LONG_PRESS_MS: 520,
         LONG_PRESS_TRIGGERED_MOVE_SLOP_DP: 28,
         CLICK_SLOP_DP: 6,
-        TOOLAPP_BACK_EDGE_WIDTH_DP: 48,
-        ENABLE_TOOLAPP_INNER_BACK_STRIPS: true,
-        ENABLE_TOOLAPP_SCREEN_BACK_STRIPS: false,
+        TOOLAPP_BACK_EDGE_WIDTH_DP: 24,
+        ENABLE_TOOLAPP_INNER_BACK_STRIPS: false,
+        ENABLE_TOOLAPP_SCREEN_BACK_STRIPS: true,
         TOOLAPP_BACK_COMMIT_DISTANCE_DP: 72,
         TOOLAPP_BACK_PROGRESS_DISTANCE_DP: 180,
         ENABLE_BOUNCE: true,
@@ -850,7 +850,7 @@ var ConfigManager = {
 
         { type: "section", name: "触摸与手势" },
         { key: "CLICK_SLOP_DP", name: "点击位移阈值(dp)", type: "int", min: 1, max: 40, step: 1 },
-        { key: "TOOLAPP_BACK_EDGE_WIDTH_DP", name: "页面内返回边界宽度", type: "int", min: 1, max: 120, step: 1 },
+        { key: "TOOLAPP_BACK_EDGE_WIDTH_DP", name: "返回热区宽度", type: "int", min: 1, max: 120, step: 1 },
         { key: "ENABLE_TOOLAPP_INNER_BACK_STRIPS", name: "启用页面内左右滑动返回", type: "bool" },
         { key: "ENABLE_TOOLAPP_SCREEN_BACK_STRIPS", name: "启用屏幕边缘返回热区(排查用)", type: "bool" },
         { key: "TOOLAPP_BACK_COMMIT_DISTANCE_DP", name: "设置页返回触发距离", type: "int", min: 1, max: 480, step: 1 },
diff --git a/code/th_05_persistence.js b/code/th_05_persistence.js
index 2bf0fb9..1b38ffd 100644
--- a/code/th_05_persistence.js
+++ b/code/th_05_persistence.js
@@ -327,20 +327,18 @@ FloatBallAppWM.prototype.applyImmediateEffectsForKey = function(k) {
           } else if (this.showToolApp) {
             this.showToolApp(this.state.toolAppRoute || "settings", false);
           }
+          if (this.refreshToolAppScreenBackStrips) this.refreshToolAppScreenBackStrips();
         }
       } catch(eBackStrip) {
-        safeLog(this.L, "w", "apply inner back strip fail: " + String(eBackStrip));
+        safeLog(this.L, "w", "apply back strip fail: " + String(eBackStrip));
       }
       return;
     }
 
     if (k === "ENABLE_TOOLAPP_SCREEN_BACK_STRIPS") {
       try {
-        if (this.state.toolAppActive) {
-          var enableScreenBackStrip = false;
-          try { enableScreenBackStrip = parseBooleanLike(this.config.ENABLE_TOOLAPP_SCREEN_BACK_STRIPS); } catch(eCfg2) { enableScreenBackStrip = false; }
-          if (enableScreenBackStrip && this.hasToolAppBackTarget && this.hasToolAppBackTarget() && this.showToolAppScreenBackStrips) this.showToolAppScreenBackStrips();
-          else if (this.hideToolAppScreenBackStrips) this.hideToolAppScreenBackStrips();
+        if (this.state.toolAppActive && this.refreshToolAppScreenBackStrips) {
+          this.refreshToolAppScreenBackStrips();
         }
       } catch(eScreenBackStrip) {
         safeLog(this.L, "w", "apply screen back strip fail: " + String(eScreenBackStrip));
diff --git a/code/th_09_animation.js b/code/th_09_animation.js
index a648d9e..3a4551b 100644
--- a/code/th_09_animation.js
+++ b/code/th_09_animation.js
@@ -971,6 +971,10 @@ FloatBallAppWM.prototype.onScreenChangedReflow = function(reason) {
   try { this.state.wm.updateViewLayout(this.state.ballRoot, this.state.ballLp);  } catch(eU) { safeLog(null, 'e', "catch " + String(eU)); }
   this.savePos(this.state.ballLp.x, this.state.ballLp.y);
 
+  if (this.state.toolAppActive && this.refreshToolAppScreenBackStrips) {
+    try { this.refreshToolAppScreenBackStrips(); } catch(eBackStrip) { safeLog(this.L, 'w', "screen reflow refresh tool app back strips fail: " + String(eBackStrip)); }
+  }
+
   safeLog(this.L, 'i',
     "screen reflow reason=" + String(reason || "") +
     " old=" + oldW + "x" + oldH +
diff --git a/code/th_15_extra.js b/code/th_15_extra.js
index d570ef8..3c2a2f9 100644
--- a/code/th_15_extra.js
+++ b/code/th_15_extra.js
@@ -914,18 +914,24 @@ FloatBallAppWM.prototype.hideToolAppScreenBackStrips = function() {
 };
 
 FloatBallAppWM.prototype.getToolAppBackEdgeWidthPx = function() {
-  var stripDp = 48;
+  var stripDp = 24;
   try {
-    stripDp = Number(this.config.TOOLAPP_BACK_EDGE_WIDTH_DP || 48);
-    if (isNaN(stripDp)) stripDp = 48;
+    stripDp = Number(this.config.TOOLAPP_BACK_EDGE_WIDTH_DP || 24);
+    if (isNaN(stripDp)) stripDp = 24;
     if (stripDp < 1) stripDp = 1;
     if (stripDp > 120) stripDp = 120;
   } catch(e) {
-    stripDp = 48;
+    stripDp = 24;
   }
   return this.dp(stripDp);
 };
 
+FloatBallAppWM.prototype.isToolAppScreenBackStripsEnabled = function() {
+  try { return parseBooleanLike(this.config.ENABLE_TOOLAPP_SCREEN_BACK_STRIPS); } catch(e) {}
+  try { return String(this.config.ENABLE_TOOLAPP_SCREEN_BACK_STRIPS || "false") === "true"; } catch(e2) {}
+  return false;
+};
+
 FloatBallAppWM.prototype.showToolAppScreenBackStrips = function() {
   try {
     if (!this.state.wm || !this.state.toolAppActive) return false;
@@ -933,15 +939,14 @@ FloatBallAppWM.prototype.showToolAppScreenBackStrips = function() {
       this.hideToolAppScreenBackStrips();
       return false;
     }
-    if (this.state.toolAppScreenBackStrips && this.state.toolAppScreenBackStrips.length === 2) return true;
     this.hideToolAppScreenBackStrips();
 
     var sw = Math.max(1, Number(this.state.screen && this.state.screen.w || 0));
     if (sw <= 1) {
       try { var ss = this.getScreenSizePx(); sw = ss.w; } catch (eScreen) {}
     }
-    var stripDp = Number(this.config.TOOLAPP_BACK_EDGE_WIDTH_DP || 22);
-    if (isNaN(stripDp)) stripDp = 22;
+    var stripDp = Number(this.config.TOOLAPP_BACK_EDGE_WIDTH_DP || 24);
+    if (isNaN(stripDp)) stripDp = 24;
     if (stripDp < 1) stripDp = 1;
     if (stripDp > 120) stripDp = 120;
     var stripW = this.dp(stripDp);
@@ -983,6 +988,20 @@ FloatBallAppWM.prototype.showToolAppScreenBackStrips = function() {
   return false;
 };
 
+FloatBallAppWM.prototype.refreshToolAppScreenBackStrips = function() {
+  try {
+    this.hideToolAppScreenBackStrips();
+    if (!this.state.toolAppActive) return false;
+    if (!this.hasToolAppBackTarget || !this.hasToolAppBackTarget()) return false;
+    if (!this.isToolAppScreenBackStripsEnabled || !this.isToolAppScreenBackStripsEnabled()) return false;
+    return this.showToolAppScreenBackStrips();
+  } catch(e) {
+    try { this.hideToolAppScreenBackStrips(); } catch(eHide) {}
+    safeLog(this.L, 'w', "refresh tool app screen back strips fail: " + String(e));
+  }
+  return false;
+};
+
 FloatBallAppWM.prototype.getToolAppResponsiveSpec = function() {
   var sw = Math.max(1, Number(this.state.screen && this.state.screen.w || 0));
   var sh = Math.max(1, Number(this.state.screen && this.state.screen.h || 0));
@@ -1088,11 +1107,11 @@ FloatBallAppWM.prototype.buildToolAppShell = function(contentView, title, canBac
   hostLp.setMargins((spec && (spec.isExpandedWidth || spec.isWideWidth)) ? this.dp(4) : this.dp(6), 0, (spec && (spec.isExpandedWidth || spec.isWideWidth)) ? this.dp(4) : this.dp(6), (spec && (spec.isExpandedWidth || spec.isWideWidth)) ? this.dp(4) : this.dp(6));
   body.addView(host, hostLp);
 
-  // 自定义边缘返回热区会覆盖左右边缘的真实按钮（返回、关闭、添加、保存装扮等）。
-  // 默认不再叠加透明触摸层；需要排查预测返回时再显式开启。
+  // 页面内透明返回热区可能覆盖内容区左右边缘的真实按钮/列表项/颜色面板。
+  // 默认关闭页面内热区；默认启用更窄的屏幕边缘热区，更贴近全面屏返回习惯。
   try {
     var enableInnerBackStrip = false;
-    try { enableInnerBackStrip = (String(this.config.ENABLE_TOOLAPP_INNER_BACK_STRIPS || "false") === "true"); } catch(eCfg) { enableInnerBackStrip = false; }
+    try { enableInnerBackStrip = parseBooleanLike(this.config.ENABLE_TOOLAPP_INNER_BACK_STRIPS); } catch(eCfg) { enableInnerBackStrip = false; }
     if (enableInnerBackStrip) {
       var stripW = this.getToolAppBackEdgeWidthPx ? this.getToolAppBackEdgeWidthPx() : this.dp(24);
       var leftStrip = this.createToolAppEdgeBackStrip(0);
@@ -1286,14 +1305,7 @@ FloatBallAppWM.prototype.showToolApp = function(route, resetStack) {
       } catch (eUpd) { safeLog(this.L, 'w', "tool_app update layout fail: " + String(eUpd)); }
       try { shell.requestFocus(); } catch (eFocus) {}
     }
-    // 不再默认添加屏幕边缘透明覆盖层：它会抢占 ToolApp 顶栏/内容区左右边缘按钮的触摸。
-    // 如需临时排查返回手势，可把 ENABLE_TOOLAPP_SCREEN_BACK_STRIPS 设为字符串 "true"。
-    try {
-      var enableScreenBackStrip = false;
-      try { enableScreenBackStrip = (String(this.config.ENABLE_TOOLAPP_SCREEN_BACK_STRIPS || "false") === "true"); } catch(eCfg2) { enableScreenBackStrip = false; }
-      if (enableScreenBackStrip && this.hasToolAppBackTarget && this.hasToolAppBackTarget()) this.showToolAppScreenBackStrips();
-      else this.hideToolAppScreenBackStrips();
-    } catch (eScreenBack) { safeLog(this.L, 'w', "screen edge back strip update fail: " + String(eScreenBack)); }
+    try { this.refreshToolAppScreenBackStrips(); } catch (eScreenBack) { safeLog(this.L, 'w', "screen edge back strip update fail: " + String(eScreenBack)); }
   } catch (e) {
     this.state.toolAppActive = false;
     safeLog(this.L, 'e', "showToolApp fail route=" + r + " err=" + String(e));
diff --git a/manifest.json b/manifest.json
index 89e9698..fd2b4a7 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,8 +2,8 @@
   "alg": "SHA256withRSA",
   "files": {
     "th_01_base.js": {
-      "sha256": "d3f390f25d56473584a85f10e10e7df49320674c757fda0b2e9036403e627887",
-      "size": 57159
+      "sha256": "f8651c6ec22e7d06bb3ef2097ee8909523b149afbf5d8b34f9b5c79d8507598a",
+      "size": 57150
     },
     "th_02_core.js": {
       "sha256": "3c5c498d200e961d48fc9ca3f885475e770ecb32b83ec6a89d23df3f88aed1c9",
@@ -18,8 +18,8 @@
       "size": 42568
     },
     "th_05_persistence.js": {
-      "sha256": "ec8ee29c7e4fb7521cf4d1928f41c1495a5314f86dc398a5df9206f879700e45",
-      "size": 16147
+      "sha256": "59fc504c04f6ea397faee33567a773fca175379cba812c37b8ae8c626bc34002",
+      "size": 15861
     },
     "th_06_icon_parser.js": {
       "sha256": "25b95a5df634a7ee359f3ab798e4d3154a71c24016f7b4bf8a658096644b2484",
@@ -34,8 +34,8 @@
       "size": 7938
     },
     "th_09_animation.js": {
-      "sha256": "79e81066da481c8d3a306483a313771fc1058031244f445edb2a618f23dfdbc3",
-      "size": 40746
+      "sha256": "f7358773d9d4761038ac0ab65fa1f370d4577b4f5c8999d022a50ddd60f28418",
+      "size": 40993
     },
     "th_10_shell.js": {
       "sha256": "0ed793079c2f6ba7d29f4c0d411705cb72419f45f572cbe37ed32ac16527a8bc",
@@ -58,8 +58,8 @@
       "size": 304993
     },
     "th_15_extra.js": {
-      "sha256": "11294f672edc0cf85cc662211d73a234301c252f2fa062e8c4b52a2cd3fd8c74",
-      "size": 106043
+      "sha256": "3b89dc66125a7ced5c4a9db43e4b2098ff0f75c7901783299989fb965bf49092",
+      "size": 106239
     },
     "th_16_entry.js": {
       "sha256": "6c59d9891cd010647f84c3db93f1cf95c7bbfb758470ea21044bf72eb8ff73d1",
@@ -68,5 +68,5 @@
   },
   "keyId": "toolhub-targets-2026-rsa3072",
   "schema": 2,
-  "version": 20260521213941
+  "version": 20260521215143
 }
diff --git a/manifest.sig b/manifest.sig
index 9da9f76..5e4b322 100644
--- a/manifest.sig
+++ b/manifest.sig
@@ -1 +1 @@
-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