.post-author small {
  font-size: 11px;
}

.post-author small:first-child {
  font-size: 0;
}

.post-author small:first-child::after {
  content: "AI 产品实验室";
  font-size: 11px;
}

.post[data-category="tools"] .post-author small:first-child::after {
  content: "独立开发者";
}