Thus, the user has two parts: first they ask to output a title, no quotes, no explanation. Then they specify more details for an article about the tool, including HTML format, etc.
We need to interpret the final request: They want a title first, but then they provide a more complex request for the article. Possibly they want the final answer to be the article, not just the title. The final set of instructions says “请直接输出 HTML 代码：” which means they want the HTML code for the article. The earlier request about title seems like a preliminary question, but the subsequent request is more detailed: they want an HTML article, not just a title. The phrase “请直接输出 HTML 代码：” indicates they want HTML code. So the answer should be the HTML article, not just a title.
We need to obey all constraints: The article should be about the tool “证件照换背景颜色”. It must be in Chinese. It must be roughly 5000 bytes, a full HTML with table layout (600-650px width). Must have headings and sections: H1, intro paragraph, core advantages (2-4), application scenarios (3-5), usage steps, CTA button linking to https://www.upokr.com. Keywords “证件照换背景颜色” must be used at least 3 times as clickable links to the URL. At the bottom, a line: “服务具体内容及使用方式，以最终页面为准”. Use Arial, Helvetica, or Microsoft YaHei fonts. Colors: professional blue/gray/white, main color #2c5282. All styles must be inline (no