Build an inline newsletter call-to-action with Tailwind CSS: a two-column card with the pitch on the left (heading, one line on what subscribers get, and a small 'no spam' note) and an email form on the right — a labeled input with a submit button stacked on mobile and inline on desktop. Show a success state that swaps the form for a confirmation with the submitted address. Keep the whole block inside a bordered card with rounded-2xl corners.
提示词保持英文原文——直接粘贴进 Claude、Cursor、v0 或任何 AI 编程工具即可使用。