:root{--wf-sans-fallback: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;--wf-serif-fallback: "Songti SC", "Hiragino Mincho ProN", "STSong", "Noto Serif CJK SC", serif;--wf-latin-serif-fallback: "Georgia", "Times New Roman", serif;--wf-latin-sans-fallback: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;}