html:lang(zh-CN) body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.cn-hero h1 {
  max-width: 8.5ch;
  letter-spacing: -0.075em;
  line-height: 1.02;
}

.cn-hero .hero-lede { max-width: 32rem; }
.cn-hero .decision-card h2 { max-width: 11ch; line-height: 1.08; }

@media (max-width: 40rem) {
  html:lang(zh-CN) .site-header nav { gap: 0.7rem; }
  html:lang(zh-CN) .site-header nav a { font-size: 0.76rem; }
  .cn-hero h1 { font-size: clamp(2.85rem, 14vw, 4.7rem); }
}