.site-header {
  position: relative;
  z-index: 1000;
  width: 100%;
  border-bottom: 1px solid var(--aiwt-border);
  background: rgba(255, 255, 255, .98);
}

@media (min-width: 901px) {
  body { padding-top: 112px; }
  .site-header { position: fixed; top: 0; right: 0; left: 0; }
  body.admin-bar .site-header { top: 32px; }
}

.site-header__utility { display: none; }

@media (min-width: 901px) {
  .site-header__utility {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 36px;
    padding: 0 clamp(24px, 3.5vw, 56px);
    gap: 24px;
    border-bottom: 1px solid var(--aiwt-border);
    background: #f8f9fb;
  }

  .site-header__catchcopy { margin: 0; color: var(--aiwt-muted); font-size: 12px; font-weight: 600; line-height: 1.4; white-space: nowrap; }
  .site-header__utility-nav { display: flex; align-items: center; gap: 22px; }
  .site-header__utility-nav a { display: inline-flex; align-items: center; gap: 5px; color: var(--aiwt-text); font-size: 12px; font-weight: 700; white-space: nowrap; }
  .site-header__utility-nav a:hover { color: var(--aiwt-accent-dark); text-decoration: none; }
  .site-header__utility-nav .dashicons { width: 16px; height: 16px; color: var(--aiwt-accent-dark); font-size: 16px; line-height: 1; }
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 76px;
  margin: 0 auto;
  padding: 0 clamp(24px, 3.5vw, 56px);
  gap: 32px;
}
.site-logo { display: inline-flex; flex: 0 0 auto; align-items: center; color: var(--aiwt-navy); font-weight: 900; line-height: 1; }
.site-logo:hover { text-decoration: none; }
.site-logo__image { display: block; height: auto; }
.site-logo__image--pc { width: var(--aiwt-logo-pc-width, 190px); }
.site-logo__image--sp { display: none; width: var(--aiwt-logo-sp-width, 155px); }
.site-logo__text { font-size: 22px; letter-spacing: -.03em; }
.site-logo__text span { color: var(--aiwt-accent-dark); }
.desktop-nav { display: flex; align-items: center; align-self: stretch; gap: 12px; }
.desktop-nav__menu,
.desktop-nav__menu ul,
.mobile-nav__menu,
.mobile-nav__menu ul { margin: 0; padding: 0; list-style: none; }
.desktop-nav__menu { display: flex; align-items: stretch; height: 100%; gap: 4px; }
.desktop-nav__menu > li { position: relative; display: flex; align-items: stretch; }
.desktop-nav__menu > li > a { display: flex; align-items: center; padding: 0 15px; color: var(--aiwt-text); font-size: 14px; font-weight: 700; white-space: nowrap; }
.desktop-nav__menu > li > a:hover,
.desktop-nav__menu > li.current-menu-item > a,
.desktop-nav__menu > li.current-menu-ancestor > a { color: var(--aiwt-accent-dark); text-decoration: none; }
.desktop-nav__menu .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 1001;
  min-width: 240px;
  padding: 10px;
  border: 1px solid var(--aiwt-border);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 16px 34px rgba(18, 48, 74, .08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
}
.desktop-nav__menu > li:hover > .sub-menu,
.desktop-nav__menu > li:focus-within > .sub-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.desktop-nav__menu .sub-menu a { display: block; padding: 10px 12px; border-radius: 7px; color: var(--aiwt-text); font-size: 14px; font-weight: 600; }
.desktop-nav__menu .sub-menu a:hover { background: var(--aiwt-bg-soft); color: var(--aiwt-accent-dark); text-decoration: none; }
.header-cta { align-items: center; justify-content: center; border-radius: 8px; background: var(--aiwt-accent-dark); color: #fff; font-weight: 800; line-height: 1.4; text-align: center; }
.header-cta:hover { background: #087f83; color: #fff; text-decoration: none; }
.header-cta--desktop { display: inline-flex; min-height: 44px; padding: 0 20px; font-size: 13px; }
.mobile-menu-toggle { display: none; }
.mobile-nav-overlay, .mobile-nav { display: none; }