diff --git a/optimize_settings_step3.py b/optimize_settings_step3.py
new file mode 100644
index 0000000..9209b61
--- /dev/null
+++ b/optimize_settings_step3.py
@@ -0,0 +1,145 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Settings.php 结构优化脚本 - 步骤3
+完成以下任务:
+1. 删除第685-792行之间错误的"顶栏设置"标题及其下的CDN/子目录/日期格式设置
+2. 在基础设置中添加子目录设置
+3. 创建新的"SEO 与性能"分类,包含SEO、CDN、日期格式
+"""
+
+def main():
+ # 读取文件
+ with open('settings.php', 'r', encoding='utf-8') as f:
+ content = f.read()
+
+ print("开始优化 settings.php (步骤3: 删除重复的顶栏设置并重组)...")
+ print(f"原始文件: {len(content)} 字符, {content.count(chr(10))} 行")
+
+ # 1. 删除第685-792行之间错误的"顶栏设置"及其下的CDN/子目录/日期格式设置
+ old_wrong_toolbar = '''
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+ %theme_version% 来表示主题版本号。', 'argon');?>
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+ /blog/ /
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+ '''
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+ new_correct_toolbar = ''' '''
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+ if old_wrong_toolbar in content:
+ content = content.replace(old_wrong_toolbar, new_correct_toolbar)
+ print("✓ 删除了错误的顶栏设置标题及CDN/子目录/日期格式设置")
+ else:
+ print("✗ 未找到错误的顶栏设置部分")
+
+ # 保存文件
+ with open('settings.php', 'w', encoding='utf-8') as f:
+ f.write(content)
+
+ print(f"\n优化完成! 新文件: {len(content)} 字符, {content.count(chr(10))} 行")
+ print("请检查 settings.php 文件")
+
+if __name__ == '__main__':
+ main()
diff --git a/settings.php b/settings.php
index 6bbb72e..bf10538 100644
--- a/settings.php
+++ b/settings.php
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