暗色模式 SaaS 产品发布倒计时推文

生成一张 4:5 竖版 1024x1280 的中文社区缩略图，画面是一条通用深色社交动态截图，不能出现真实社交平台名称、商标、认证品牌或水印。账号名统一为「@launchpad_hq」，头像是电蓝色抽象火箭感图形但不要文字标志。动态正文为中文产品发布倒计时：「还有 72 小时。先说这么多。加入@launchpad_hq 早鸟名单。」动态卡片附图是一张暗色发布页预览，视觉焦点为超大中文标题「即将上线」，深钴蓝到黑色背光，带细密网格纹理和倒计时数字。底部互动数据用中文标签：「转发」「喜欢」「收藏」「评论」。整体暗色、克制、科技感强，所有可见文字为自然简体中文，不出现英文大词、真实平台元素、乱码。

A dark-mode Twitter/X screenshot of a SaaS product teaser tweet building anticipation before launch. Account: "@launchpad_hq" (gold checkmark, avatar: a rocket icon in electric blue). Tweet text: "72 hours. That's all we'll say. 🚀 launchpad.so/early". The tweet card has an attached image — a stylised dark landing page preview showing the word "SOON" in enormous sans-serif capital letters, backlit by a deep cobalt-to-black gradient with a faint grid-line texture. Below the image: "11.8K Retweets · 63.2K Likes · 19,401 Bookmarks". A bookmark ribbon icon glows in Twitter's new gold colour indicating high save rate. Background #15202B feed. The "SOON" image is the focal point — vibrant cobalt against the dark tweet chrome.