/* ===== 共通ヘッダー（全ページ共通）===== */
/* 変数が未定義のページでも動くようにフォールバック値を持たせる */

header.site {
  background: var(--bg, #FFFFFF);
  border-bottom: 1px solid var(--border, #E5E7EB);
  position: sticky;
  top: 0;
  z-index: 100;
}
header.site .header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header.site .logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  line-height: 1.2;
  flex-shrink: 0;
  text-decoration: none;
}
header.site .logo img {
  height: 38px;
  width: auto;
  display: block;
}
header.site .logo .logo-sub {
  font-size: var(--fs-xs, 13px);
  font-weight: 500;
  color: var(--navy, #4F5B70);
  white-space: nowrap;
  letter-spacing: 0.08em;
}
header.site nav.gnav {
  display: flex;
  align-items: center;
  gap: 14px;
}
header.site nav.gnav a {
  font-size: var(--fs-xs, 13px);
  font-weight: 500;
  color: var(--navy, #4F5B70);
  padding: 4px 6px;
  text-decoration: none;
  transition: color .2s;
}
header.site nav.gnav a:hover {
  color: var(--peach-dark, #D87877);
}
header.site nav.gnav a.current {
  color: var(--peach-dark, #D87877);
  font-weight: 700;
  border-bottom: 2px solid var(--peach, #F4A09E);
  padding-bottom: 2px;
}
header.site nav.gnav .btn-cta {
  display: inline-block;
  background: var(--peach, #F4A09E);
  color: var(--bg, #FFFFFF) !important;
  padding: 8px 18px;
  border-radius: 30px;
  font-size: var(--fs-xs, 13px);
  font-weight: 700;
  letter-spacing: 0.05em;
  border: none;
  cursor: pointer;
  transition: background .2s, transform .2s;
}
header.site nav.gnav .btn-cta:hover {
  background: var(--peach-dark, #D87877);
  border-bottom: none;
  transform: translateY(-1px);
}

/* ハンバーガーメニュー（モバイル用）*/
header.site .hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 4px;
}
header.site .hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy, #4F5B70);
  transition: transform .2s, opacity .2s;
}

/* レスポンシブ */
@media (max-width: 720px) {
  header.site nav.gnav {
    gap: 8px;
  }
  header.site nav.gnav a {
    font-size: 12px;
    padding: 4px;
  }
  header.site nav.gnav a:not(.btn-cta) {
    display: none;
  }
  header.site nav.gnav a.btn-cta {
    display: inline-block;
  }
}