GOV.UK Design System -https://design-system.service.gov.uk/ U.S. Web Design System (USWDS) - https://designsystem.digital.gov/ City of Seattle Digital Style Guide - https://app.uxpin.com/design-system/3f410cc070aa87dbff70/city-of-seattle-digital-style-guide Web Standards and Design System for California Government - https://webstandards.ca.gov/ 欢迎补充！