diff --git a/keyBoard/Assets.xcassets/My/mask_top_title.imageset/Contents.json b/keyBoard/Assets.xcassets/My/mask_top_title.imageset/Contents.json
new file mode 100644
index 0000000..236b5cb
--- /dev/null
+++ b/keyBoard/Assets.xcassets/My/mask_top_title.imageset/Contents.json
@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "filename" : "mask_top_title.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/keyBoard/Assets.xcassets/My/mask_top_title.imageset/mask_top_title.png b/keyBoard/Assets.xcassets/My/mask_top_title.imageset/mask_top_title.png
new file mode 100644
index 0000000..25100d4
Binary files /dev/null and b/keyBoard/Assets.xcassets/My/mask_top_title.imageset/mask_top_title.png differ
diff --git a/keyBoard/Class/Guard/V/KBKeyboardMaskView.m b/keyBoard/Class/Guard/V/KBKeyboardMaskView.m
index 0fd60d0..4ec1dc9 100644
--- a/keyBoard/Class/Guard/V/KBKeyboardMaskView.m
+++ b/keyBoard/Class/Guard/V/KBKeyboardMaskView.m
@@ -10,10 +10,12 @@
 @interface KBKeyboardMaskView ()
 @property (nonatomic, strong) UIButton *backButton;
 @property (nonatomic, strong) FLAnimatedImageView *gifView;
+@property (nonatomic, strong) UIImageView *tipLabel; // 顶部提示图
 @property (nonatomic, assign) CGFloat keyboardHeight;
 @end
 
 @implementation KBKeyboardMaskView
+static const CGFloat KGifViewH = (209);
 
 - (instancetype)initWithFrame:(CGRect)frame {
     self = [super initWithFrame:frame];
@@ -29,11 +31,8 @@
 
     [_backButton mas_makeConstraints:^(MASConstraintMaker *make) {
         make.left.equalTo(self).offset(9);
-        if (@available(iOS 11.0, *)) {
             make.top.equalTo(self.mas_safeAreaLayoutGuideTop).offset(4);
-        } else {
-            make.top.equalTo(self).offset(40);
-        }
+    
         make.width.height.mas_equalTo(40);
     }];
 
@@ -41,17 +40,24 @@
     _gifView = [FLAnimatedImageView new];
     _gifView.contentMode = UIViewContentModeScaleAspectFit;
     _gifView.clipsToBounds = YES;
+    _gifView.layer.cornerRadius = 30;
+//    _gifView.clipsToBounds = true;
+    _gifView.layer.masksToBounds = true;
     [self addSubview:_gifView];
 
-    // 尺寸固定：宽=屏幕宽，高=300；位置在 layoutSubviews 里根据键盘高度动态计算
-    CGFloat screenW = UIScreen.mainScreen.bounds.size.width;
     [_gifView mas_makeConstraints:^(MASConstraintMaker *make) {
         make.centerX.equalTo(self);
         make.width.mas_equalTo(KBFit(316));
-        make.height.mas_equalTo(KBFit(209));
+        make.height.mas_equalTo(KBFit(KGifViewH));
         // 竖直方向不在这里约束，由 layoutSubviews 手动布局
     }];
 
+    // 顶部提示图
+    _tipLabel = [UIImageView new];
+    _tipLabel.image = [UIImage imageNamed:@"mask_top_title"];
+    _tipLabel.contentMode = UIViewContentModeScaleAspectFit;
+    [self addSubview:_tipLabel];
+
     // 整个蒙层点击：激活输入框
     UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onTapMask:)];
     [self addGestureRecognizer:tap];
@@ -76,7 +82,7 @@
     // - 无键盘：居中显示；
     // - 有键盘：底部距离键盘上方 20pt，若空间不足则向上顶到顶部预留的 safe 区域。
     CGFloat viewH = CGRectGetHeight(self.bounds);
-    CGFloat gifH = 300.0;
+    CGFloat gifH = KBFit(KGifViewH);
     CGFloat topMargin = 80.0; // 预留给返回按钮和标题等
     CGFloat bottomMargin = 20.0;
 
@@ -91,9 +97,29 @@
         if (y < topMargin) y = topMargin;
     }
 
-    CGRect frame = self.gifView.frame;
-    frame.origin.y = y;
-    self.gifView.frame = frame;
+    CGRect gifFrame = self.gifView.frame;
+    gifFrame.origin.y = y;
+    self.gifView.frame = gifFrame;
+
+    // 布局顶部提示图：底部距离 gifView 顶部 20pt，居中显示
+    CGFloat labelMaxWidth = CGRectGetWidth(self.bounds) - 40.0; // 左右各留 20
+    if (labelMaxWidth < 0) { labelMaxWidth = 0; }
+    UIImage *tipImage = self.tipLabel.image;
+    if (!tipImage) { return; }
+    CGFloat imgW = tipImage.size.width;
+    CGFloat imgH = tipImage.size.height;
+    if (imgW <= 0 || imgH <= 0) { return; }
+    CGFloat scale = 1.0;
+    if (imgW > labelMaxWidth && labelMaxWidth > 0) {
+        scale = labelMaxWidth / imgW;
+    }
+    CGFloat labelW = imgW * scale;
+    CGFloat labelH = imgH * scale;
+
+    CGFloat labelX = (CGRectGetWidth(self.bounds) - labelW) * 0.5;
+    CGFloat labelBottom = CGRectGetMinY(self.gifView.frame) - 20.0;
+    CGFloat labelY = labelBottom - labelH;
+    self.tipLabel.frame = CGRectMake(labelX, labelY, labelW, labelH);
 }
 
 - (void)onTapMask:(UITapGestureRecognizer *)gr {
diff --git a/keyBoard/Class/Guard/VC/KBGuideVC.m b/keyBoard/Class/Guard/VC/KBGuideVC.m
index da458ce..fd21f98 100644
--- a/keyBoard/Class/Guard/VC/KBGuideVC.m
+++ b/keyBoard/Class/Guard/VC/KBGuideVC.m
@@ -62,11 +62,8 @@ typedef NS_ENUM(NSInteger, KBGuideItemType) {
         make.left.right.equalTo(self.view);
         make.height.mas_equalTo(52);
         // 底部跟随键盘变化
-        if (@available(iOS 11.0, *)) {
             self.inputBarBottom = make.bottom.equalTo(self.view.mas_safeAreaLayoutGuideBottom);
-        } else {
-            self.inputBarBottom = make.bottom.equalTo(self.view);
-        }
+      
     }];
 
     [self.textField mas_makeConstraints:^(MASConstraintMaker *make) {
diff --git a/keyBoard/Class/Pay/V/KBVipReviewListCell.m b/keyBoard/Class/Pay/V/KBVipReviewListCell.m
index 6acedaa..159de50 100644
--- a/keyBoard/Class/Pay/V/KBVipReviewListCell.m
+++ b/keyBoard/Class/Pay/V/KBVipReviewListCell.m
@@ -71,9 +71,7 @@ static NSString * const kKBVipReviewItemCellId = @"kKBVipReviewItemCellId";
         _collectionView.dataSource = self;
         _collectionView.delegate = self;
         [_collectionView registerClass:KBVipReviewItemCell.class forCellWithReuseIdentifier:kKBVipReviewItemCellId];
-        if (@available(iOS 11.0, *)) {
             _collectionView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
-        }
     }
     return _collectionView;
 }
diff --git a/keyBoard/Class/Pay/VC/KBVipPay.m b/keyBoard/Class/Pay/VC/KBVipPay.m
index 8a3c2ad..efc4876 100644
--- a/keyBoard/Class/Pay/VC/KBVipPay.m
+++ b/keyBoard/Class/Pay/VC/KBVipPay.m
@@ -242,9 +242,7 @@ static NSString * const kKBVipReviewListCellId = @"kKBVipReviewListCellId";
         _collectionView.dataSource = self;
         _collectionView.delegate = self;
         _collectionView.alwaysBounceVertical = YES;
-        if (@available(iOS 11.0, *)) {
             _collectionView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
-        }
         [_collectionView registerClass:KBVipPayHeaderView.class forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:kKBVipHeaderId];
         [_collectionView registerClass:KBVipSubscribeCell.class forCellWithReuseIdentifier:kKBVipSubscribeCellId];
         [_collectionView registerClass:KBVipReviewListCell.class forCellWithReuseIdentifier:kKBVipReviewListCellId];
diff --git a/keyBoard/Class/Shop/VC/KBShopItemVC.m b/keyBoard/Class/Shop/VC/KBShopItemVC.m
index f75435d..b488d37 100644
--- a/keyBoard/Class/Shop/VC/KBShopItemVC.m
+++ b/keyBoard/Class/Shop/VC/KBShopItemVC.m
@@ -47,9 +47,7 @@
         }];
     }
 
-    if (@available(iOS 11.0, *)) {
         self.collectionView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
-    }
 
     [self beginFirstRefresh];
 }
diff --git a/keyBoard/KeyBoardPrefixHeader.pch b/keyBoard/KeyBoardPrefixHeader.pch
index 55d3664..0dd7a9a 100644
--- a/keyBoard/KeyBoardPrefixHeader.pch
+++ b/keyBoard/KeyBoardPrefixHeader.pch
@@ -100,10 +100,8 @@ static inline UIWindow *KB_KeyWindow(void) {
 
 // Safe Area
 static inline UIEdgeInsets KB_SafeAreaInsets(void) {
-    if (@available(iOS 11.0, *)) {
         UIWindow *w = KB_KeyWindow();
         return w ? w.safeAreaInsets : UIEdgeInsetsZero;
-    }
     return UIEdgeInsetsZero;
 }