:root {
  --text: #342a2a;
  --muted: #6f5f61;
  --line: #eadbdd;
  --soft: #fff7f7;
  --accent: #c66b7b;
  --accent-dark: #91485a;
  --cream: #fbf6ed;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  line-height: 1.9;
  background: #fff;
}
a { color: var(--accent-dark); }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px clamp(18px, 4vw, 48px);
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--line);
}
.brand {
  flex: 0 0 auto;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0;
}
.site-nav {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: thin;
}
.site-nav a,
.site-footer nav a {
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}
.site-nav a[aria-current="page"],
.site-nav a:hover,
.site-footer nav a:hover {
  background: var(--soft);
  color: var(--accent-dark);
}
.hero {
  background: linear-gradient(180deg, #fff7f7 0%, #fff 78%);
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  width: min(1040px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(44px, 8vw, 86px) 0 clamp(32px, 6vw, 58px);
}
.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 700;
}
h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.35;
  letter-spacing: 0;
}
.lead {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 2.4vw, 18px);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 18px;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
}
.button.primary {
  color: #fff;
  background: var(--accent);
}
.button.secondary {
  color: var(--accent-dark);
  background: #fff;
  border: 1px solid var(--line);
}
.page-grid {
  width: min(920px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(30px, 6vw, 58px) 0;
}
.article {
  display: grid;
  gap: 24px;
}
.content-section {
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.content-section h2,
.notice-box h2,
.related-links h2 {
  margin: 0 0 10px;
  font-size: clamp(21px, 3vw, 28px);
  line-height: 1.5;
  letter-spacing: 0;
}
.content-section p,
.notice-box p {
  margin: 0;
  color: var(--muted);
}
.notice-box {
  padding: clamp(18px, 4vw, 26px);
  border: 1px solid #e8cfd4;
  border-left: 5px solid var(--accent);
  border-radius: 8px;
  background: var(--soft);
}
.related-links {
  padding: clamp(18px, 4vw, 24px);
  border-radius: 8px;
  background: var(--cream);
}
.related-links div {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.related-links a {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  text-decoration: none;
}
.site-footer {
  padding: 34px clamp(18px, 4vw, 48px);
  color: var(--muted);
  background: #3a3030;
}
.site-footer,
.site-footer a {
  color: #f8eeee;
}
.footer-brand {
  margin: 0 0 8px;
  font-weight: 700;
}
.site-footer p {
  max-width: 880px;
  margin: 0 0 18px;
}
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 16px;
  }
  .site-nav {
    width: 100%;
  }
  .hero-inner,
  .page-grid {
    width: min(100% - 28px, 920px);
  }
  .button {
    width: 100%;
  }
}