body {
  margin: 0;
  background: #dceef2;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.cover {
  width: 90%;
  max-width: 520px;
  text-align: center;
}

.cover img {
  display: block;
  margin: 0 auto;
  max-width: 360px;
  max-height: 52vh;
  width: auto;
  height: auto;
  object-fit: contain;
}

.title {
  margin-top: 1.8em;
  font-family: "Songti SC", "SimSun", serif;
  font-size: 1.65rem;
  letter-spacing: 0.32em;
  color: #1f2a2e;
  text-indent: 0.32em; /* 用字距补视觉居中，因为中文标题有letter-spacing */
  text-align: center;
}

.copy {
  margin-top: 0.9em;
  font-family: "Songti SC", "SimSun", serif;
  font-size: 0.8rem;
  color: #9aa3a6;
  letter-spacing: 0.24em;
  text-indent: 0.24em;
  text-align: center;
}

.note {
  margin-top: 0.55em;
  font-family: "Songti SC", "SimSun", serif;
  font-size: 0.76rem;
  color: #b8c0c2;
  letter-spacing: 0.36em;
  text-indent: 0.36em;
  text-align: center;
}

.poem-page {
  max-width: 560px;
  margin: 6em auto;
  padding: 0 1.2em;
  font-family: "Songti SC", "SimSun", serif;
  color: #2c3a40;
}

.poem-title {
  text-align: center;
  font-size: 1.4rem;
  letter-spacing: 0.3em;
  margin-bottom: 0.5em;
}

.poem-date {
  text-align: center;
  font-size: 0.8rem;
  color: #9aa3a6;
  letter-spacing: 0.2em;
  margin-bottom: 3em;
}

.poem-content {
  font-size: 1.05rem;
  line-height: 2.4;
  letter-spacing: 0.08em;
}

.poem-content p {
  text-indent: 2em;
  margin: 1em 0;
}

.poem-back {
  margin-top: 4em;
  text-align: center;
  font-size: 0.82rem;
  letter-spacing: 0.3em;
}

.poem-back a {
  color: #7a8b8f;
  text-decoration: none;
}

.poem-back a:hover {
  color: #2c3a40;
}