/* ============================================
   共通ヘッダー/フッター（brand-concept / homare 等の子ページ用）
   ============================================ */
:root {
  --site-navy: #0a1956;
  --site-gold: #c4a862;
  --site-cream: #faf9f6;
  --site-white: #ffffff;
}

/* ---- Header ---- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: transparent;
  z-index: 100;
  padding: 1.4rem 3rem;
  border-bottom: 1px solid rgba(196, 168, 98, 0);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.site-header.is-scrolled {
  background: var(--site-cream);
  border-bottom: 1px solid rgba(196, 168, 98, 0.18);
}
.site-header__brand-text,
.site-header__nav a {
  color: var(--site-white);
  transition: color 0.3s ease;
}
.site-header.is-scrolled .site-header__brand-text,
.site-header.is-scrolled .site-header__nav a {
  color: var(--site-navy);
}
.site-header__logo {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  text-decoration: none;
}
.site-header__logo img {
  height: 32px;
  width: auto;
  display: block;
}
.site-header__brand-text {
  font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  font-weight: 400;
}
.site-header__nav {
  display: flex;
  gap: 2.2rem;
  align-items: center;
}
.site-header__nav a {
  font-size: 0.85rem;
  text-decoration: none;
  letter-spacing: 0.06em;
  font-weight: 500;
  position: relative;
}
.site-header__nav a:hover {
  color: var(--site-gold);
}
.site-header__nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background: var(--site-gold);
  transition: width 0.3s ease;
}
.site-header__nav a:hover::after {
  width: 100%;
}
.site-header__nav a[aria-current="page"] {
  color: var(--site-gold);
}

/* ---- Footer ---- */
.site-footer {
  width: 100%;
  background: var(--site-navy);
  color: var(--site-cream);
  padding: 4rem 24px 2.4rem;
  text-align: center;
}
.site-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 2rem;
}
.site-footer__logo {
  height: 36px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
}
.site-footer__brand-text {
  font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  color: var(--site-cream);
}
.site-footer__nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 2.4rem;
}
.site-footer__nav a {
  font-size: 0.85rem;
  color: var(--site-cream);
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: color 0.3s ease;
}
.site-footer__nav a:hover {
  color: var(--site-gold);
}
.site-footer__legal {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.4rem;
  margin-bottom: 1.8rem;
  padding-top: 1.8rem;
  border-top: 1px solid rgba(196, 168, 98, 0.22);
}
.site-footer__legal a {
  font-size: 0.78rem;
  color: rgba(250, 249, 246, 0.78);
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: color 0.3s ease;
}
.site-footer__legal a:hover {
  color: var(--site-gold);
}
.site-footer__copyright {
  font-size: 0.72rem;
  color: rgba(250, 249, 246, 0.55);
  letter-spacing: 0.08em;
  margin: 0;
}

/* ---- Responsive ---- */
@media (max-width: 1023px) {
  .site-header {
    padding: 1.2rem 1.4rem;
  }
  .site-header__nav {
    gap: 1.2rem;
  }
  .site-header__nav a {
    font-size: 0.78rem;
  }
  .site-header__brand-text {
    display: none;
  }
}
@media (max-width: 767px) {
  .site-header {
    padding: 1rem 1.2rem;
  }
  .site-header__nav {
    display: none;
  }
  .site-footer {
    padding: 3rem 20px 2rem;
  }
  .site-footer__nav {
    gap: 1.2rem 1.6rem;
    margin-bottom: 1.8rem;
  }
  .site-footer__nav a {
    font-size: 0.8rem;
  }
  .site-footer__legal {
    gap: 1rem;
    padding-top: 1.4rem;
    margin-bottom: 1.4rem;
  }
  .site-footer__legal a {
    font-size: 0.74rem;
  }
}