:root {
  --paper: #F4F0E6;
  --paper-2: #FBF9F4;
  --sumi: #38342D;
  --sumi-2: #5C574E;
  --sumi-3: #8A8377;
  --ai: #2C4875;
  --rule: #DCD6C8;
  --max: 42rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper-2);
  color: var(--sumi);
  font-family: "Noto Sans JP", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.95;
  letter-spacing: 0.02em;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 16px;
}

/* ---- 見出し ---- */

h1, h2, h3 {
  font-family: "Noto Serif JP", serif;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

h2 {
  font-size: 1.32rem;
  margin: 3.4rem 0 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
}

h3 {
  font-size: 1.06rem;
  margin: 2.2rem 0 0.5rem;
}

p { margin: 0 0 1.2rem; }

a { color: var(--ai); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--sumi); }

strong { font-weight: 700; }

/* ---- 表紙 ---- */

.hero {
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  padding: 4.5rem 0 3.6rem;
  text-align: center;
}

.hero img { width: 76px; height: 76px; }

.hero h1 {
  font-size: 2.5rem;
  letter-spacing: 0.28em;
  margin: 1.1rem 0 0.2rem;
  text-indent: 0.28em;
}

.yomi {
  font-size: 0.78rem;
  letter-spacing: 0.44em;
  color: var(--sumi-3);
  text-indent: 0.44em;
  margin: 0 0 1.6rem;
}

.lead {
  font-size: 1.05rem;
  margin: 0 auto;
  max-width: 26rem;
}

/* ---- LINE ボタン ---- */

.cta { text-align: center; margin: 2.6rem 0 0.6rem; }

.btn {
  display: inline-block;
  background: var(--sumi);
  color: var(--paper);
  padding: 0.95rem 2.4rem;
  border-radius: 999px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-decoration: none;
  min-height: 44px;
}
.btn:hover { background: var(--ai); color: var(--paper); }

.cta small {
  display: block;
  margin-top: 0.9rem;
  color: var(--sumi-3);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

/* ---- 本文 ---- */

main { padding: 0.5rem 0 4rem; }

.layers { margin: 1.4rem 0 0; padding: 0; list-style: none; }

.layers li {
  border-top: 1px solid var(--rule);
  padding: 1.3rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
  align-items: baseline;
}
.layers li:last-child { border-bottom: 1px solid var(--rule); }

.layers b {
  font-family: "Noto Serif JP", serif;
  font-weight: 600;
  font-size: 1.06rem;
  min-width: 8.5rem;
}

.layers span { flex: 1 1 14rem; font-size: 0.97rem; color: var(--sumi-2); }

.layers .tag {
  flex: 0 0 auto;
  align-self: center;
}

.tag {
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--sumi-3);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.1rem 0.55rem;
  white-space: nowrap;
}

.list { margin: 0 0 1.2rem; padding-left: 1.3rem; }
.list li { margin-bottom: 0.45rem; }

.note {
  background: var(--paper);
  border-left: 3px solid var(--ai);
  padding: 1.2rem 1.3rem;
  margin: 1.6rem 0;
}
.note p:last-child { margin-bottom: 0; }
.note .small { font-size: 0.9rem; color: var(--sumi-2); }

/* ---- 文書ページ ---- */

.doc { padding: 2.6rem 0 4rem; }
.doc h1 { font-size: 1.7rem; margin: 0 0 0.4rem; }
.doc .meta { color: var(--sumi-3); font-size: 0.86rem; margin-bottom: 2.2rem; }
.doc h2 { font-size: 1.12rem; }
.doc h3 { font-size: 1rem; }
.doc ul { padding-left: 1.3rem; }
.doc li { margin-bottom: 0.4rem; }
.doc .addr { font-style: normal; line-height: 2.1; }

/* ---- 足もと ---- */

footer {
  border-top: 1px solid var(--rule);
  background: var(--paper);
  padding: 2.6rem 0 3.2rem;
  font-size: 0.9rem;
  color: var(--sumi-2);
}
footer .name { font-family: "Noto Serif JP", serif; font-weight: 600; color: var(--sumi); }
footer nav { margin: 1.1rem 0 1.4rem; display: flex; flex-wrap: wrap; gap: 0.6rem 1.6rem; }
footer address { font-style: normal; line-height: 2; }

.back { display: inline-block; margin-bottom: 1.6rem; font-size: 0.9rem; }

@media (max-width: 480px) {
  body { font-size: 16px; }
  .hero { padding: 3.4rem 0 2.8rem; }
  .hero h1 { font-size: 2.1rem; }
  .layers b { min-width: 100%; }
}