body {
  font-family: "Georgia", serif;
  font-size: 18px;
  line-height: 1.8;
  max-width: 800px;
  margin: 5rem auto;
  padding: 0 1.5rem;
  color: #222;
  background: #fdfcf8;
}

#content h1.title {
  font-size: 2.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.3em;
}

span.subtitle {
  display: block;
  font-size: 1.4rem;
  font-weight: 400;
  text-align: center;
  margin: 0 auto 2.5em auto;
  line-height: 1.6;
  max-width: 600px;
  color: #555;
}

#content .org-center {
  font-size: 1rem;
  margin-top: 5em;
  font-style: italic;
  text-align: left;
}

.principle {
  margin-top: 4em;
  margin-bottom: 2em;
}

.principle > h2 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 0.8em;
}

#outline-container-epilogue {
  border-top: 1px solid #ddd;
  padding-top: 2em;
  margin-top: 5em;
}

#outline-container-epilogue h2 {
  font-style: italic;
}

#outline-container-epilogue .section-number-2 {
  display: none;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #121212;
    color: #e0e0e0;
  }

  span.subtitle {
    color: #aaa;
  }

  #outline-container-epilogue {
    border-top: 1px solid #555;
  }

  .principle > h2 {
    color: #fff;
  }

  .principle p {
    color: #ddd;
  }
}