必须居中且最大宽度不超过 1200px（重要！）".) (One more thing: "14.所有标签中不允许添加、等标签".) (One more thing: "15.footer 高度不超过 150px，宽度全屏，内容整体居中显示".) (One more thing: "【布局硬性要求】整个页面的内容区域最大宽度为 1200px，所有块级容器必须使用以下 CSS：max-width: 1200px !important; width: 100% !important; margin: 0 auto !important;".) (One more thing: "任何内层 div 不允许单独设置 width 属性，使用 width:100% 继承父容器宽度".) (One more thing: "所有文字、表格、图片均在容器内居中显示".) Okay, I think I have all the constraints. Let's write the code. (Wait, I need to make sure the content is >3000 characters. I will write a lot of text.) (Wait, I need to make sure the tabs work. I will use a simple script.) (Wait, I need to make sure the mobile text removal works. I will use media queries.) (Wait, I need to make sure the bolding is correct. I will use CSS class `.bold-keyword`.) (Wait, I need to make sure the schema is correct. I will use JSON-LD.) (Wait, I need to make sure the SEO meta tags are correct. I will optimize them.) (Wait, I need to make sure the H tags are correct. I will use H1 once, then H2, H3.) (Wait, I need to make sure the table wrapping is correct. I will use the specified div.) (Wait, I need to make sure the pre tag styling is correct. I will use the specified styles.) (Wait, I need to make sure the image styling is correct. I will not use images, but if I do, I will apply the style.) (Wait, I need to make sure the viewport meta tag is correct. I will include it.) (Wait, I need to make sure the charset meta tag is correct. I will include it.) (Wait, I need to make sure the DOCTYPE is correct. I will use .) (Wait, I need to make sure the html lang is correct. I will use lang="zh-CN".) (Wait, I need to make sure the head title is correct. I will use the specified title.) (Wait, I need to make sure the description and keywords are correct. I will optimize them.) (Wait, I need to make sure the author is correct. I will set it.) (Wait, I need to make sure the robots are correct. I will set them.) (Wait, I need to make sure the CSS is internal. I will put it in