html,
body,
button,
input,
select,
textarea {
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", YuGothic, Meiryo, sans-serif;
}

article,
article h1,
article h2,
article h3,
.hero h1,
.lead,
.contents,
.roadmap,
.notice {
  font-family: inherit;
}

body {
  font-feature-settings: "palt" 1;
  letter-spacing: 0.01em;
}

article {
  line-height: 1.72;
}

article .prose-group {
  margin: 0 0 1.65em;
}

article .prose-group p {
  margin: 0 0 0.42em;
}

article .prose-group p:last-child {
  margin-bottom: 0;
}

article > p {
  margin-bottom: 1.65em;
}

article .book-footnote {
  margin: -0.45em 0 1.65em;
  font-size: 0.78em;
  line-height: 1.55;
  color: #666c66;
}

article .book-photo {
  margin: 1.4em 0 2em;
}

article .book-photo img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

article .book-photo figcaption {
  margin-top: 0.55em;
  color: #666c66;
  font-size: 0.73em;
  line-height: 1.5;
}

article .book-photo figcaption a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

article h1,
article h2,
article h3,
.hero h1 {
  font-weight: 700;
}