diff --git a/keyBoard/Assets.xcassets/AI/comment_nor_icon.imageset/Contents.json b/keyBoard/Assets.xcassets/AI/comment_nor_icon.imageset/Contents.json
new file mode 100644
index 0000000..35f9dbc
--- /dev/null
+++ b/keyBoard/Assets.xcassets/AI/comment_nor_icon.imageset/Contents.json
@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "comment_nor_icon@2x.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "filename" : "comment_nor_icon@3x.png",
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/keyBoard/Assets.xcassets/AI/comment_nor_icon.imageset/comment_nor_icon@2x.png b/keyBoard/Assets.xcassets/AI/comment_nor_icon.imageset/comment_nor_icon@2x.png
new file mode 100644
index 0000000..27a3761
Binary files /dev/null and b/keyBoard/Assets.xcassets/AI/comment_nor_icon.imageset/comment_nor_icon@2x.png differ
diff --git a/keyBoard/Assets.xcassets/AI/comment_nor_icon.imageset/comment_nor_icon@3x.png b/keyBoard/Assets.xcassets/AI/comment_nor_icon.imageset/comment_nor_icon@3x.png
new file mode 100644
index 0000000..a5f341d
Binary files /dev/null and b/keyBoard/Assets.xcassets/AI/comment_nor_icon.imageset/comment_nor_icon@3x.png differ
diff --git a/keyBoard/Assets.xcassets/AI/comment_sel_icon.imageset/Contents.json b/keyBoard/Assets.xcassets/AI/comment_sel_icon.imageset/Contents.json
new file mode 100644
index 0000000..a7f321d
--- /dev/null
+++ b/keyBoard/Assets.xcassets/AI/comment_sel_icon.imageset/Contents.json
@@ -0,0 +1,22 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "comment_sel_icon@2x.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "filename" : "comment_sel_icon@3x.png",
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/keyBoard/Assets.xcassets/AI/comment_sel_icon.imageset/comment_sel_icon@2x.png b/keyBoard/Assets.xcassets/AI/comment_sel_icon.imageset/comment_sel_icon@2x.png
new file mode 100644
index 0000000..dd2091e
Binary files /dev/null and b/keyBoard/Assets.xcassets/AI/comment_sel_icon.imageset/comment_sel_icon@2x.png differ
diff --git a/keyBoard/Assets.xcassets/AI/comment_sel_icon.imageset/comment_sel_icon@3x.png b/keyBoard/Assets.xcassets/AI/comment_sel_icon.imageset/comment_sel_icon@3x.png
new file mode 100644
index 0000000..9db05b8
Binary files /dev/null and b/keyBoard/Assets.xcassets/AI/comment_sel_icon.imageset/comment_sel_icon@3x.png differ
diff --git a/keyBoard/Class/AiTalk/M/KBAICommentModel.h b/keyBoard/Class/AiTalk/M/KBAICommentModel.h
index c87c24e..91786b6 100644
--- a/keyBoard/Class/AiTalk/M/KBAICommentModel.h
+++ b/keyBoard/Class/AiTalk/M/KBAICommentModel.h
@@ -41,7 +41,7 @@ typedef NS_ENUM(NSInteger, KBAIReplyFooterState) {
 @property(nonatomic, assign) NSInteger likeCount;
 
 /// 是否已点赞
-@property(nonatomic, assign) BOOL isLiked;
+@property(nonatomic, assign) BOOL liked;
 
 /// 创建时间（时间戳）
 @property(nonatomic, assign) NSTimeInterval createTime;
diff --git a/keyBoard/Class/AiTalk/M/KBAICommentModel.m b/keyBoard/Class/AiTalk/M/KBAICommentModel.m
index efcb59d..2e4b312 100644
--- a/keyBoard/Class/AiTalk/M/KBAICommentModel.m
+++ b/keyBoard/Class/AiTalk/M/KBAICommentModel.m
@@ -26,11 +26,6 @@
   return @{@"replies" : [KBAIReplyModel class]};
 }
 
-- (void)setLiked:(NSInteger)liked {
-  // 后端返回的是 NSInteger (0/1)，转换为 BOOL
-  _isLiked = (liked == 1);
-}
-
 - (void)setCreatedAt:(NSString *)createdAt {
   // 后端返回的是字符串时间，转换为时间戳
   if (createdAt && createdAt.length > 0) {
@@ -44,6 +39,28 @@
   }
 }
 
+#pragma mark - MJExtension Hook
+
+/// MJExtension 转换完成后的钩子方法，用于处理空值
+- (void)mj_didConvertToObjectWithKeyValues:(NSDictionary *)keyValues {
+  // 防止后端返回 null，统一设置空字符串为默认值
+  if (!_commentId) {
+    _commentId = @"";
+  }
+  if (!_userId) {
+    _userId = @"";
+  }
+  if (!_userName) {
+    _userName = @"";
+  }
+  if (!_avatarUrl) {
+    _avatarUrl = @"";
+  }
+  if (!_content) {
+    _content = @"";
+  }
+}
+
 - (instancetype)init {
   self = [super init];
   if (self) {
@@ -133,7 +150,8 @@
   
   // 内容高度（多行）
   UIFont *contentFont = [UIFont systemFontOfSize:15];
-  CGRect contentRect = [self.content boundingRectWithSize:CGSizeMake(contentWidth, CGFLOAT_MAX)
+  NSString *contentText = self.content ?: @"";
+  CGRect contentRect = [contentText boundingRectWithSize:CGSizeMake(contentWidth, CGFLOAT_MAX)
                                                   options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading
                                                attributes:@{NSFontAttributeName: contentFont}
                                                   context:nil];
diff --git a/keyBoard/Class/AiTalk/M/KBAIReplyModel.m b/keyBoard/Class/AiTalk/M/KBAIReplyModel.m
index 43ea95b..be29c26 100644
--- a/keyBoard/Class/AiTalk/M/KBAIReplyModel.m
+++ b/keyBoard/Class/AiTalk/M/KBAIReplyModel.m
@@ -7,7 +7,6 @@
 
 #import "KBAIReplyModel.h"
 #import <MJExtension/MJExtension.h>
-#import "KBAIReplyModel.h"
 
 
 @implementation KBAIReplyModel
@@ -40,6 +39,31 @@
   }
 }
 
+#pragma mark - MJExtension Hook
+
+/// MJExtension 转换完成后的钩子方法，用于处理空值
+- (void)mj_didConvertToObjectWithKeyValues:(NSDictionary *)keyValues {
+  // 防止后端返回 null，统一设置空字符串为默认值
+  if (!_replyId) {
+    _replyId = @"";
+  }
+  if (!_userId) {
+    _userId = @"";
+  }
+  if (!_userName) {
+    _userName = @"";
+  }
+  if (!_avatarUrl) {
+    _avatarUrl = @"";
+  }
+  if (!_content) {
+    _content = @"";
+  }
+  if (!_replyToUserName) {
+    _replyToUserName = @"";
+  }
+}
+
 - (NSString *)formattedTime {
   NSDate *date = [NSDate dateWithTimeIntervalSince1970:self.createTime];
   NSTimeInterval interval = [[NSDate date] timeIntervalSinceDate:date];
@@ -70,7 +94,7 @@
   CGFloat contentWidth = maxWidth - 68 - 28 - 8 - 50;
   
   // 用户名高度（可能包含 "回复 @xxx"）
-  NSMutableString *userNameText = [NSMutableString stringWithString:self.userName];
+  NSMutableString *userNameText = [NSMutableString stringWithString:self.userName ?: @""];
   if (self.replyToUserName.length > 0) {
     [userNameText appendFormat:@" 回复 @%@", self.replyToUserName];
   }
@@ -83,7 +107,8 @@
   
   // 内容高度
   UIFont *contentFont = [UIFont systemFontOfSize:14];
-  CGRect contentRect = [self.content boundingRectWithSize:CGSizeMake(contentWidth, CGFLOAT_MAX)
+  NSString *contentText = self.content ?: @"";
+  CGRect contentRect = [contentText boundingRectWithSize:CGSizeMake(contentWidth, CGFLOAT_MAX)
                                                   options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading
                                                attributes:@{NSFontAttributeName: contentFont}
                                                   context:nil];
diff --git a/keyBoard/Class/AiTalk/V/KBAICommentFooterView.m b/keyBoard/Class/AiTalk/V/KBAICommentFooterView.m
index f58d59f..82ba72b 100644
--- a/keyBoard/Class/AiTalk/V/KBAICommentFooterView.m
+++ b/keyBoard/Class/AiTalk/V/KBAICommentFooterView.m
@@ -29,7 +29,7 @@
 #pragma mark - UI Setup
 
 - (void)setupUI {
-  self.contentView.backgroundColor = [UIColor whiteColor];
+  self.contentView.backgroundColor = [UIColor clearColor];
 
   [self.contentView addSubview:self.actionButton];
   [self.contentView addSubview:self.lineView];
diff --git a/keyBoard/Class/AiTalk/V/KBAICommentHeaderView.m b/keyBoard/Class/AiTalk/V/KBAICommentHeaderView.m
index 15c72f3..3bfa242 100644
--- a/keyBoard/Class/AiTalk/V/KBAICommentHeaderView.m
+++ b/keyBoard/Class/AiTalk/V/KBAICommentHeaderView.m
@@ -35,7 +35,7 @@
 #pragma mark - UI Setup
 
 - (void)setupUI {
-  self.contentView.backgroundColor = [UIColor whiteColor];
+  self.contentView.backgroundColor = [UIColor clearColor];
 
   [self.contentView addSubview:self.avatarImageView];
   [self.contentView addSubview:self.userNameLabel];
@@ -47,7 +47,7 @@
   [self.avatarImageView mas_makeConstraints:^(MASConstraintMaker *make) {
     make.left.equalTo(self.contentView).offset(16);
     make.top.equalTo(self.contentView).offset(12);
-    make.width.height.mas_equalTo(40);
+    make.width.height.mas_equalTo(28);
   }];
 
   [self.userNameLabel mas_makeConstraints:^(MASConstraintMaker *make) {
@@ -98,12 +98,11 @@
       comment.likeCount > 0 ? [self formatLikeCount:comment.likeCount] : @"赞";
   self.likeButton.textLabel.text = likeText;
 
-  UIImage *likeImage = comment.isLiked
-                           ? [UIImage systemImageNamed:@"heart.fill"]
-                           : [UIImage systemImageNamed:@"heart"];
+  UIImage *likeImage = comment.liked
+                           ? [UIImage imageNamed:@"comment_sel_icon"]
+                           : [UIImage imageNamed:@"comment_nor_icon"];
   self.likeButton.iconView.image = likeImage;
-  self.likeButton.iconView.tintColor =
-      comment.isLiked ? [UIColor systemRedColor] : [UIColor grayColor];
+
 }
 
 - (NSString *)formatLikeCount:(NSInteger)count {
@@ -135,7 +134,7 @@
   if (!_avatarImageView) {
     _avatarImageView = [[UIImageView alloc] init];
     _avatarImageView.contentMode = UIViewContentModeScaleAspectFill;
-    _avatarImageView.layer.cornerRadius = 20;
+    _avatarImageView.layer.cornerRadius = 14;
     _avatarImageView.layer.masksToBounds = YES;
     _avatarImageView.backgroundColor = [UIColor systemGray5Color];
   }
@@ -145,8 +144,9 @@
 - (UILabel *)userNameLabel {
   if (!_userNameLabel) {
     _userNameLabel = [[UILabel alloc] init];
-    _userNameLabel.font = [UIFont systemFontOfSize:14 weight:UIFontWeightMedium];
-    _userNameLabel.textColor = [UIColor secondaryLabelColor];
+      _userNameLabel.text = @"--";
+    _userNameLabel.font = [UIFont systemFontOfSize:13 weight:UIFontWeightMedium];
+    _userNameLabel.textColor = [UIColor colorWithHex:0x9F9F9F];
   }
   return _userNameLabel;
 }
@@ -154,8 +154,8 @@
 - (UILabel *)contentLabel {
   if (!_contentLabel) {
     _contentLabel = [[UILabel alloc] init];
-    _contentLabel.font = [UIFont systemFontOfSize:15];
-    _contentLabel.textColor = [UIColor labelColor];
+    _contentLabel.font = [UIFont systemFontOfSize:12];
+    _contentLabel.textColor = [UIColor whiteColor];
     _contentLabel.numberOfLines = 0;
   }
   return _contentLabel;
@@ -165,7 +165,7 @@
   if (!_timeLabel) {
     _timeLabel = [[UILabel alloc] init];
     _timeLabel.font = [UIFont systemFontOfSize:12];
-    _timeLabel.textColor = [UIColor secondaryLabelColor];
+    _timeLabel.textColor = [UIColor colorWithHex:0x9F9F9F];
   }
   return _timeLabel;
 }
@@ -175,7 +175,7 @@
     _replyButton = [UIButton buttonWithType:UIButtonTypeCustom];
     _replyButton.titleLabel.font = [UIFont systemFontOfSize:12];
     [_replyButton setTitle:@"回复" forState:UIControlStateNormal];
-    [_replyButton setTitleColor:[UIColor secondaryLabelColor] forState:UIControlStateNormal];
+    [_replyButton setTitleColor:[UIColor colorWithHex:0x9F9F9F] forState:UIControlStateNormal];
     [_replyButton addTarget:self
                      action:@selector(replyButtonTapped)
            forControlEvents:UIControlEventTouchUpInside];
@@ -188,10 +188,9 @@
     _likeButton = [[KBTopImageButton alloc] init];
     _likeButton.iconSize = CGSizeMake(20, 20);
     _likeButton.spacing = 2;
-    _likeButton.iconView.image = [UIImage systemImageNamed:@"heart"];
-    _likeButton.iconView.tintColor = [UIColor grayColor];
-    _likeButton.textLabel.font = [UIFont systemFontOfSize:11];
-    _likeButton.textLabel.textColor = [UIColor grayColor];
+    _likeButton.iconView.image = [UIImage imageNamed:@"comment_nor_icon"];
+    _likeButton.textLabel.font = [UIFont systemFontOfSize:10];
+    _likeButton.textLabel.textColor = [UIColor colorWithHex:0xC5BEB4];
     [_likeButton addTarget:self
                     action:@selector(likeButtonTapped)
           forControlEvents:UIControlEventTouchUpInside];
diff --git a/keyBoard/Class/AiTalk/V/KBAICommentView.m b/keyBoard/Class/AiTalk/V/KBAICommentView.m
index baa196a..2e52175 100644
--- a/keyBoard/Class/AiTalk/V/KBAICommentView.m
+++ b/keyBoard/Class/AiTalk/V/KBAICommentView.m
@@ -23,6 +23,7 @@ static NSString *const kCommentFooterIdentifier = @"CommentFooter";
 
 @interface KBAICommentView () <UITableViewDataSource, UITableViewDelegate>
 
+@property(nonatomic, strong) UIVisualEffectView *blurBackgroundView;
 @property(nonatomic, strong) UIView *headerView;
 @property(nonatomic, strong) UILabel *titleLabel;
 @property(nonatomic, strong) UIButton *closeButton;
@@ -68,11 +69,18 @@ static NSString *const kCommentFooterIdentifier = @"CommentFooter";
 #pragma mark - UI Setup
 
 - (void)setupUI {
-  self.backgroundColor = [UIColor whiteColor];
+  // 设置背景为透明，让模糊效果可见
+  self.backgroundColor = [UIColor clearColor];
   self.layer.cornerRadius = 12;
   self.layer.maskedCorners = kCALayerMinXMinYCorner | kCALayerMaxXMinYCorner;
   self.clipsToBounds = YES;
 
+  // 添加模糊背景（最底层）
+  [self addSubview:self.blurBackgroundView];
+  [self.blurBackgroundView mas_makeConstraints:^(MASConstraintMaker *make) {
+    make.edges.equalTo(self);
+  }];
+
   [self addSubview:self.headerView];
   [self.headerView addSubview:self.titleLabel];
   [self.headerView addSubview:self.closeButton];
@@ -293,8 +301,8 @@ static NSString *const kCommentFooterIdentifier = @"CommentFooter";
   __weak typeof(self) weakSelf = self;
   header.onLikeAction = ^{
     // TODO: 处理点赞逻辑
-    comment.isLiked = !comment.isLiked;
-    comment.likeCount += comment.isLiked ? 1 : -1;
+    comment.liked = !comment.liked;
+    comment.likeCount += comment.liked ? 1 : -1;
     [weakSelf.tableView reloadSections:[NSIndexSet indexSetWithIndex:section]
                       withRowAnimation:UITableViewRowAnimationNone];
   };
@@ -449,10 +457,29 @@ static NSInteger const kRepliesLoadCount = 5;
 
 #pragma mark - Lazy Loading
 
+- (UIVisualEffectView *)blurBackgroundView {
+  if (!_blurBackgroundView) {
+    // 创建模糊效果（43pt 的模糊半径）
+    // iOS 的 UIBlurEffect 没有直接设置模糊半径的 API，使用系统预设的 dark 效果
+    UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleDark];
+    _blurBackgroundView = [[UIVisualEffectView alloc] initWithEffect:blurEffect];
+    
+    // 在模糊效果上叠加一个半透明黑色遮罩来调整透明度和颜色
+    // 颜色：#000000，透明度：0.31
+    UIView *darkOverlay = [[UIView alloc] init];
+    darkOverlay.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.31];
+    [_blurBackgroundView.contentView addSubview:darkOverlay];
+    [darkOverlay mas_makeConstraints:^(MASConstraintMaker *make) {
+      make.edges.equalTo(_blurBackgroundView);
+    }];
+  }
+  return _blurBackgroundView;
+}
+
 - (UIView *)headerView {
   if (!_headerView) {
     _headerView = [[UIView alloc] init];
-    _headerView.backgroundColor = [UIColor whiteColor];
+    _headerView.backgroundColor = [UIColor clearColor];
   }
   return _headerView;
 }
@@ -461,7 +488,7 @@ static NSInteger const kRepliesLoadCount = 5;
   if (!_titleLabel) {
     _titleLabel = [[UILabel alloc] init];
     _titleLabel.font = [UIFont systemFontOfSize:15 weight:UIFontWeightMedium];
-    _titleLabel.textColor = [UIColor labelColor];
+    _titleLabel.textColor = [UIColor whiteColor];
     _titleLabel.text = @"0条评论";
   }
   return _titleLabel;
@@ -486,7 +513,7 @@ static NSInteger const kRepliesLoadCount = 5;
                                                 style:UITableViewStyleGrouped];
     _tableView.dataSource = self;
     _tableView.delegate = self;
-    _tableView.backgroundColor = [UIColor whiteColor];
+    _tableView.backgroundColor = [UIColor clearColor];
     _tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
     _tableView.keyboardDismissMode = UIScrollViewKeyboardDismissModeOnDrag;
 
diff --git a/keyBoard/Class/AiTalk/V/KBAIReplyCell.m b/keyBoard/Class/AiTalk/V/KBAIReplyCell.m
index a3ac551..8234e03 100644
--- a/keyBoard/Class/AiTalk/V/KBAIReplyCell.m
+++ b/keyBoard/Class/AiTalk/V/KBAIReplyCell.m
@@ -29,7 +29,9 @@
   self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
   if (self) {
     self.selectionStyle = UITableViewCellSelectionStyleNone;
-    self.backgroundColor = [UIColor whiteColor];
+    self.backgroundColor = [UIColor clearColor];
+      self.contentView.backgroundColor = [UIColor clearColor];
+
     [self setupUI];
   }
   return self;
diff --git a/keyBoard/Class/AiTalk/V/KBPersonaChatCell.m b/keyBoard/Class/AiTalk/V/KBPersonaChatCell.m
index e671a18..6bc58a4 100644
--- a/keyBoard/Class/AiTalk/V/KBPersonaChatCell.m
+++ b/keyBoard/Class/AiTalk/V/KBPersonaChatCell.m
@@ -541,6 +541,7 @@
                                                 popStyle:LSTPopStyleSmoothFromBottom
                                             dismissStyle:LSTDismissStyleSmoothToBottom];
     customView.popView = popView;
+    popView.bgColor = [UIColor clearColor];
     self.popView = popView;
     popView.priority = 1000;
     popView.isAvoidKeyboard = NO;