.header {
  padding: 2rem 1.5rem;
  color: var(--color-black);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.04em;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

.header::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background-color: rgb(233 238 235 / 45%);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
  content: "";
}

.header.is-scrolled::before {
  opacity: 1;
}

.header-inner {
  align-items: center;
  row-gap: 1rem;
}

.header-logo {
  display: block;
  width: min(220px, 100%);
  margin-inline: auto;
}

.header-logo img {
  display: block;
  width: 100%;
  height: auto;
}

.header-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem min(4rem, max(2rem, calc(2rem + (100vw - 90rem) / 40)));
}

.header-nav-link,
.header-contact {
  color: inherit;
  text-decoration: none;
  transition:
    color 0.2s ease,
    background-color 0.2s ease;
}

.header-nav-link {
  font-size: 0.9375rem;
  padding-block: 0.5rem;
  white-space: nowrap;
}

.header-nav-link p,
.header-contact p {
  margin: 0;
}

.header-contact {
  display: flex;
  font-size: 0.9375rem;
  width: fit-content;
  margin-inline: auto;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.5rem 1.5rem;
  min-height: 3rem;
  border-radius: 5px;
  background-color: var(--color-white);
  text-align: left;
  line-height: 1.5;
}

.header-contact img {
  width: 16px;
  height: 13px;
  flex-shrink: 0;
}

.header-nav-link:hover {
  color: var(--color-green);
  text-decoration: none;
}

.header-contact:hover {
  color: var(--color-green);
  background-color: var(--color-bg);
}

.header-logo:focus-visible,
.header-nav-link:focus-visible,
.header-contact:focus-visible {
  outline: 2px solid var(--color-green);
  outline-offset: 4px;
}

/* スマホを基本とし、Bootstrapのlg（992px）から既存のPC配置へ戻す。 */
.header {
  padding: 1rem;
  background-color: #f5f4f0;
}

.header-inner {
  justify-content: space-between;
  margin-inline: 0;
}

.header-brand {
  padding: 0;
}

.header-logo {
  width: min(10rem, 100%);
  margin-inline: 0;
}

.header-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  flex-shrink: 0;
  padding: 0;
  cursor: pointer;
}

.header-toggle img {
  width: 2rem;
  height: 2.5rem;
  object-fit: contain;
}

.header-toggle-close {
  display: none;
}

.header.is-menu-open .header-toggle-open {
  display: none;
}

.header.is-menu-open .header-toggle-close {
  display: block;
}

.header-menu {
  position: fixed;
  isolation: isolate;
  inset: 4.5rem 0 0;
  padding: 2.5rem 10% 3.5rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: #f5f4f0;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s ease,
    visibility 0.2s;
}

.header-menu::before,
.header-menu::after {
  position: absolute;
  z-index: 0;
  width: 20rem;
  height: 20rem;
  background: url("/system_panel/uploads/images/20260927150850800143.svg")
    center / contain no-repeat;
  filter: brightness(0);
  opacity: 0.04;
  pointer-events: none;
  content: "";
}

.header-menu::before {
  left: -7rem;
  top: 25rem;
}

.header-menu::after {
  right: 0;
  top: 15rem;
  width: 8rem;
  height: 8rem;
  background: url("/system_panel/uploads/images/20261004075654993031.svg")
    center / contain no-repeat;
}

.header-menu > .header-nav,
.header-menu > .header-contact-column {
  position: relative;
  z-index: 1;
}

.header.is-menu-open .header-menu {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

.header-nav {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  padding: 0;
}

.header-nav-link {
  display: block;
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--color-gray);
}

.header-contact-column {
  padding: 0;
  margin-top: 2rem;
}

.header-contact {
  width: 100%;
  min-height: 3.75rem;
  padding: 0.75rem 1rem;
  gap: 1.5rem;
}

.header-contact img {
  width: 1.5rem;
  height: auto;
}

.header-toggle:focus-visible {
  outline: 2px solid var(--color-green);
  outline-offset: 0.25rem;
}

@media (min-width: 992px) {
  .header {
    padding: 2rem 1.5rem;
    background-color: transparent;
  }
  .header-inner {
    justify-content: flex-start;
    margin-inline: -0.75rem;
  }
  .header-brand {
    padding-inline: 0.75rem;
  }
  .header-logo {
    width: min(220px, 100%);
    margin-inline: auto;
  }
  .header-toggle {
    display: none;
  }
  .header-menu {
    display: contents;
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
  }
  .header-menu::before,
  .header-menu::after {
    content: none;
  }
  .header-nav {
    flex-direction: row;
    align-items: center;
    gap: 0.5rem min(4rem, max(2rem, calc(2rem + (100vw - 90rem) / 40)));
    padding-inline: 0.75rem;
  }
  .header-nav-link {
    padding-block: 0.5rem;
    border: 0;
  }
  .header-contact-column {
    padding-inline: 0.75rem;
    margin-top: 0;
  }
  .header-contact {
    width: fit-content;
    min-height: 3rem;
    padding: 0.5rem 1.5rem;
    gap: 0.75rem;
  }
  .header-contact img {
    width: 1rem;
    height: 0.8125rem;
  }
}

/* 編集画面ではメニューを常時表示して選択できるようにする。 */
.header:is([data-gjs-type], :has([data-gjs-type])) .header-menu {
  position: static;
  display: block;
  width: 100%;
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

@media (prefers-reduced-motion: reduce) {
  .header-menu {
    transition: none;
  }
}

/* PCとスマホのメニューは独立したHTMLで管理する。 */
.header-desktop {
  display: none;
}

.header-mobile {
  display: block;
}

.header-mobile-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

@media (min-width: 992px) {
  .header-desktop {
    display: flex;
  }
  .header-mobile {
    display: none;
  }
}