@charset "UTF-8";

:root {
  --ink: #302823;
  --muted: #756960;
  --paper: #fffdf8;
  --canvas: #f4eadc;
  --accent: #9a3f2f;
  --accent-soft: #f5dfd4;
  --line: #d8c7b8;
  --code: #f5efe8;
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans CJK JP", sans-serif;
  color: var(--ink);
  line-height: 1.82;
  font-size: 16px;
}

@page {
  size: A4;
  margin: 18mm 17mm 20mm;

  @bottom-right {
    content: counter(page);
    color: #756960;
    font-size: 8.5pt;
    vertical-align: bottom;
  }
}

* {
  box-sizing: border-box;
}

html {
  background: var(--canvas);
}

body {
  max-width: 960px;
  margin: 0 auto;
  padding: 3.5rem clamp(1.25rem, 5vw, 4.5rem) 5rem;
  background: var(--paper);
  box-shadow: 0 12px 44px rgb(89 61 43 / 12%);
}

body[data-publication-section="cover"] {
  page: cover;
}

.cover-navigation {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2rem;
}

.cover-navigation a {
  display: inline-block;
  padding: 0.55rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 0.35rem;
  text-decoration: none;
}

h1,
h2,
h3 {
  line-height: 1.38;
  break-after: avoid;
}

h1 {
  margin: 0 0 2.6rem;
  padding: 1.8rem 0 1.2rem;
  border-top: 8px solid var(--accent);
  border-bottom: 1px solid var(--line);
  font-size: clamp(2rem, 6vw, 3.45rem);
  letter-spacing: 0.02em;
  overflow-wrap: anywhere;
}

h2 {
  margin-top: 3.4rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--accent);
  font-size: 1.65rem;
}

h3 {
  margin-top: 2.2rem;
  color: var(--accent);
  font-size: 1.18rem;
}

p,
li,
table,
blockquote,
pre {
  orphans: 3;
  widows: 3;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

blockquote {
  margin: 1.8rem 0;
  padding: 0.85rem 1.2rem;
  border-left: 5px solid var(--accent);
  background: var(--accent-soft);
}

blockquote > :first-child {
  margin-top: 0;
}

blockquote > :last-child {
  margin-bottom: 0;
}

table {
  width: 100%;
  margin: 1.35rem 0 1.8rem;
  border-collapse: collapse;
  font-size: 0.9rem;
  break-inside: avoid;
}

th,
td {
  padding: 0.58rem 0.68rem;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--accent-soft);
  font-weight: 700;
}

code,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

code {
  padding: 0.1em 0.3em;
  border-radius: 0.25em;
  background: var(--code);
  font-size: 0.88em;
}

pre {
  overflow-x: auto;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: var(--code);
  line-height: 1.58;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  break-inside: avoid;
}

pre code {
  padding: 0;
  background: transparent;
  font-size: 0.82rem;
}

ruby {
  ruby-position: over;
  ruby-align: center;
}

rt,
rp {
  font-size: 0.52em;
  font-weight: 500;
}

.furigana-build-note {
  margin: -1.45rem 0 2.4rem;
  color: var(--muted);
  font-size: 0.86rem;
}

hr {
  margin: 3rem 0;
  border: 0;
  border-top: 1px solid var(--line);
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

@media print {
  @page cover {
    @top-left {
      content: none;
    }

    @bottom-right {
      content: none;
    }
  }

  .cover-navigation {
    display: none;
  }

  body[data-publication-section="body"] > section.level1 + section.level1 {
    break-before: page;
  }

  :root {
    font-size: 10.2pt;
  }

  html,
  body {
    max-width: none;
    margin: 0;
    padding: 0;
    background: white;
    box-shadow: none;
  }

  h1 {
    margin-top: 0;
    font-size: 22pt;
  }

  h2 {
    margin-top: 2.4rem;
    font-size: 16pt;
  }

  h3 {
    font-size: 12pt;
  }

  a {
    color: inherit;
  }

  img {
    max-height: 235mm;
    object-fit: contain;
  }
}

@media (max-width: 640px) {
  body {
    padding-top: 1.5rem;
  }

  table {
    display: block;
    overflow-x: auto;
    font-size: 0.84rem;
  }
}