Build a referral call-to-action with Tailwind CSS: a short explanation of the reward for both sides, a copyable invite link field with a copy button that confirms with a check, share buttons for the usual channels, and a progress tracker showing invites sent, signed up and rewarded as a three-step strip. Show an empty state explaining the first step when no invites exist yet.
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。