/* 《天净沙·秋思》：古道、昏鸦、瘦马与夕阳。 */
.hero {
  background-image: url("poem-tianjingsha-autumn.jpg");
  background-position: center 51%;
}
.hero h1 { font-size: clamp(54px, 5.6vw, 78px); }

@media (max-width: 700px) {
  .hero { background-position: 79% top; }
  .hero h1 { font-size: 43px; letter-spacing: .01em; }
}

@media (max-width: 360px) {
  .hero h1 { font-size: 38px; }
}