:root {
  color-scheme: light;
  --ink: #211d19;
  --muted: #676058;
  --paper: #f7f4ee;
  --card: #fffdf9;
  --line: #ddd5ca;
  --accent: #9f1820;
  --accent-soft: #f4e5e4;
  --max: 860px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
.site-header { border-bottom: 1px solid var(--line); background: rgba(247, 244, 238, .96); }
.header-inner, .page, .site-footer { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand {
  color: var(--ink);
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
}
.back { color: var(--muted); font-size: 13px; text-decoration: none; }
.page { padding-block: 72px 96px; }
.eyebrow { margin: 0 0 12px; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .16em; }
h1 {
  margin: 0;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.35;
  letter-spacing: .025em;
}
.lead { max-width: 720px; margin: 24px 0 0; color: var(--muted); }
.summary { margin: 36px 0 0; padding: 22px 24px; border: 1px solid #e2c3c1; border-radius: 10px; background: var(--accent-soft); }
.summary p { margin: 0; }
.policy { margin-top: 56px; padding: 8px clamp(20px, 4vw, 40px) 40px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); }
section { padding: 34px 0 30px; border-bottom: 1px solid var(--line); }
section:last-child { border-bottom: 0; }
h2 { margin: 0 0 14px; font-size: 20px; line-height: 1.5; }
p { margin: 12px 0 0; }
ol, ul { margin: 12px 0 0; padding-left: 1.45em; }
li + li { margin-top: 7px; }
.company-data { display: grid; grid-template-columns: 130px 1fr; gap: 8px 20px; margin: 18px 0 0; }
.company-data dt { color: var(--muted); }
.company-data dd { margin: 0; }
.date { margin-top: 32px; color: var(--muted); font-size: 14px; text-align: right; }
.site-footer { display: flex; justify-content: space-between; gap: 20px; padding-block: 28px 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.site-footer a { color: inherit; }
@media (max-width: 640px) {
  body { font-size: 15px; }
  .header-inner, .page, .site-footer { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { min-height: 64px; }
  .page { padding-block: 48px 72px; }
  .policy { margin-top: 40px; padding-inline: 18px; }
  .company-data { grid-template-columns: 1fr; gap: 2px; }
  .company-data dd + dt { margin-top: 10px; }
  .site-footer { flex-direction: column; }
}