Build a bottom tab bar with Tailwind CSS: a fixed bar pinned to the bottom edge with four or five tabs, each an icon plus a small label, the active tab in the accent color. Add safe-area padding for iOS home-indicator devices, hide the bar when scrolling down and reveal it on scroll up, and give each tab a minimum 44px tap height. Keep the bar hidden on desktop widths.
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。