@import url('https://fonts.googleapis.com/css2?family=M+PLUS+Rounded+1c:wght@400;500;700&family=Quicksand:wght@500;600&display=swap');

:root {
  --paper: #f7f2e8;
  --card: #fffcf3;
  --ink: #2e2a26;
  --ink2: #5c534a;
  --ink3: #6e655b;
  --ink4: #8b8177;
  --ink5: #a09689;
  --teal: #4e9e92;
  --teal-dark: #3f7f75;
  --amber: #e8b978;
  --amber-dark: #9c7530;
  --hairline: rgba(46, 42, 38, 0.1);
  --hairline-strong: rgba(46, 42, 38, 0.18);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding: 0 20px 80px;
  background: linear-gradient(180deg, #fbf8f0 0%, var(--paper) 42%, #f2ece0 100%);
  background-attachment: fixed;
  color: var(--ink);
  font-family: 'M PLUS Rounded 1c', -apple-system, BlinkMacSystemFont, 'Hiragino Sans',
    'Noto Sans JP', sans-serif;
  font-size: 15px;
  line-height: 2;
  letter-spacing: 0.01em;
}

.wrap {
  max-width: 680px;
  margin: 0 auto;
}

/* ─── ヘッダー ─────────────────────────────── */

.masthead {
  padding: 44px 0 26px;
  text-align: center;
}

.masthead .logo {
  display: inline-block;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink);
  text-decoration: none;
}

.masthead .logo::after {
  content: '';
  display: block;
  width: 34px;
  height: 3px;
  margin: 9px auto 0;
  border-radius: 2px;
  background: var(--amber);
  opacity: 0.75;
}

.masthead .tagline {
  margin: 12px 0 0;
  font-size: 11.5px;
  line-height: 1.8;
  color: var(--ink5);
}

/* ─── 紙 ───────────────────────────────────── */

.sheet {
  padding: 34px 30px 38px;
  border: 1px solid var(--hairline);
  border-radius: 20px;
  background: var(--card);
  box-shadow: 0 10px 30px rgba(46, 42, 38, 0.05);
}

.eyebrow {
  margin: 0 0 10px;
  font-family: 'Quicksand', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--ink5);
  text-transform: uppercase;
}

h1 {
  margin: 0 0 6px;
  font-size: 23px;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: 0.01em;
}

.lede {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 2.05;
  color: var(--ink3);
}

.meta {
  margin: 18px 0 0;
  font-family: 'Quicksand', sans-serif;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink5);
}

h2 {
  margin: 40px 0 14px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
}

h2 .no {
  margin-right: 9px;
  font-family: 'Quicksand', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--ink5);
}

h3 {
  margin: 24px 0 8px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.8;
  color: var(--ink2);
}

p {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 2.1;
  color: var(--ink2);
}

p:last-child,
li:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0 0 14px;
  padding-left: 1.25em;
}

li {
  margin-bottom: 7px;
  font-size: 13px;
  line-height: 2.05;
  color: var(--ink2);
}

li::marker {
  color: var(--ink5);
}

a {
  color: var(--teal-dark);
  text-underline-offset: 3px;
  text-decoration-color: rgba(78, 158, 146, 0.4);
}

a:hover {
  text-decoration-color: var(--teal-dark);
}

strong {
  font-weight: 700;
  color: var(--ink);
}

/* 点線区切り */
.rule {
  height: 1px;
  margin: 34px 0;
  border: 0;
  background-image: linear-gradient(
    to right,
    var(--hairline-strong) 0 4px,
    transparent 4px 10px
  );
  background-size: 10px 1px;
  background-repeat: repeat-x;
}

/* 余白のある注記 */
.note {
  margin: 18px 0;
  padding: 16px 18px;
  border-left: 2px solid var(--amber);
  background: rgba(232, 185, 120, 0.09);
  border-radius: 0 12px 12px 0;
}

.note p {
  margin: 0;
  font-size: 12.5px;
  color: var(--ink2);
}

/* 定義リスト風の表 */
.pairs {
  margin: 0 0 14px;
  border-top: 1px solid var(--hairline);
}

.pairs > div {
  display: flex;
  flex-wrap: wrap;
  gap: 0 14px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--hairline);
}

.pairs dt {
  flex: 0 0 150px;
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.9;
  color: var(--ink);
}

.pairs dd {
  flex: 1 1 220px;
  margin: 0;
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--ink3);
}

/* ─── お問い合わせのボタン ───────────────────── */

.mailto {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 6px 0 4px;
  padding: 15px 26px;
  border-radius: 999px;
  background: var(--teal);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  box-shadow: 0 8px 20px rgba(78, 158, 146, 0.26);
}

.mailto:hover {
  background: var(--teal-dark);
}

.address {
  margin: 14px 0 0;
  font-family: 'Quicksand', sans-serif;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--ink3);
  overflow-wrap: anywhere;
}

/* アプリのエラーから来た人へ出す差し込み */
.inbound {
  display: none;
  margin: 0 0 26px;
  padding: 18px 20px;
  border: 1px solid rgba(78, 158, 146, 0.3);
  border-radius: 14px;
  background: rgba(78, 158, 146, 0.07);
}

.inbound.on {
  display: block;
}

.inbound h2 {
  margin: 0 0 8px;
  font-size: 13.5px;
}

.inbound p {
  margin: 0;
  font-size: 12.5px;
  color: var(--ink2);
}

/* ─── 目次 / ページ間リンク ─────────────────── */

.index {
  margin: 0;
  padding: 0;
  list-style: none;
}

.index li {
  margin: 0;
  border-bottom: 1px solid var(--hairline);
}

.index li:last-child {
  border-bottom: 0;
}

.index a {
  display: block;
  padding: 18px 4px;
  color: var(--ink);
  text-decoration: none;
}

.index .t {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.7;
}

.index .t::after {
  content: '→';
  margin-left: 8px;
  color: var(--ink5);
  font-size: 12px;
}

.index .d {
  font-size: 11.5px;
  line-height: 1.85;
  color: var(--ink4);
}

.pagenav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 26px 0 0;
}

.pagenav a {
  padding: 8px 16px;
  border: 1px solid var(--hairline-strong);
  border-radius: 999px;
  color: var(--ink3);
  font-size: 11.5px;
  text-decoration: none;
}

.pagenav a:hover {
  border-color: var(--teal);
  color: var(--teal-dark);
}

.pagenav a[aria-current='page'] {
  border-color: transparent;
  background: rgba(46, 42, 38, 0.06);
  color: var(--ink4);
}

footer {
  margin: 30px 0 0;
  text-align: center;
  font-size: 10.5px;
  line-height: 2;
  color: var(--ink5);
}

/* 足元は主張させない。本文のリンク色は使わない。 */
footer a {
  color: var(--ink4);
  text-decoration-color: var(--hairline-strong);
}

@media (max-width: 560px) {
  body {
    padding: 0 14px 60px;
    font-size: 14px;
  }

  .masthead {
    padding: 34px 0 20px;
  }

  .sheet {
    padding: 26px 20px 30px;
    border-radius: 16px;
  }

  h1 {
    font-size: 20px;
  }

  .pairs dt {
    flex: 1 1 100%;
  }

  .pairs > div {
    gap: 2px;
  }
}