.site-footer {
  display: none;
  position: fixed;
  left: 20px;
  bottom: 20px;
  font-size: 0.8rem;
  color: #666;
  z-index: 100;
  font-family: 'Noto Sans SC', sans-serif;
}

#ending .site-footer {
  display: block;
}

/* 保留其他样式不变 */
.footer-nav {
  display: flex;
  gap: 15px;
}

.footer-nav a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s;
}

.footer-nav a:hover {
  opacity: 0.7;
}

.copyright {
  margin-top: 8px;
  opacity: 0.8;
}