:root{--content-width:1280px;--header-height:64px;--font-size-base:16px;--font-d-din-exp:D-DIN Exp,arial,microsoft yahei,pingfangsc,helvetica,sans-serif;--font-dm-sans:D-DIN Exp,"DM Sans",arial,microsoft yahei,pingfangsc,helvetica,sans-serif}