.a-header {
  box-shadow: 0 2px 4px rgb(0 0 0 / 0.08);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: #fff;
}

.a-header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1435px;
  margin-inline: auto;
  padding: 10px 20px;
}

.a-header__logo {
  position: relative;
  width: 56px;
  z-index: 999;
}

.a-header__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 28px;
  height: 28px;
  background-color: var(--color-black);
  border-radius: 50%;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.a-header__hamburger-line {
  position: relative;
  width: 12px;
  height: 1px;
  background-color: #fff;
  margin: 2px 0;
  transition: all 0.3s ease;
  transform-origin: center;
}

.a-header__hamburger.is-open .a-header__hamburger-line:nth-child(1) {
  top: 5px;
  transform: rotate(45deg);
}

.a-header__hamburger.is-open .a-header__hamburger-line:nth-child(2) {
  opacity: 0;
}

.a-header__hamburger.is-open .a-header__hamburger-line:nth-child(3) {
  bottom: 5px;
  transform: rotate(-45deg);
}

/* メニューの初期状態（隠す） */
.a-header__menu-sp {
  position: fixed;
  top: -200%;
  left: 0;
  width: 100%;
  background-color: #fff;
  border-top: 1px solid var(--color-black);
  z-index: 1000;
  transition: top 0.3s ease;
  overflow-y: auto;
}

/* メニューが開いている時 */
.a-header__menu-sp.is-open {
  top: var(--header-height, 90px);
  height: calc(100vh - var(--header-height, 90px));
}

.a-header__menu-pc {
  display: none;
}

@media screen and (min-width: 1024px) {
  .a-header__inner {
    padding: 20px 30px;
  }

  .a-header__logo {
    width: 75px;
  }

  .a-header__hamburger {
    display: none;
  }

  .a-header__menu-sp {
    display: none;
  }

  .a-header__menu-pc {
    display: block;
  }

  .a-header__item-btn-wrapper {
    display: flex;
    gap: 10px;
  }
}

/* フッター */
.a-footer {
  border-top: 1px solid #000;
}

.a-footer__menu-pc {
  display: none;
}

.a-footer__copyright {
  margin-top: 24px;
  font-size: 10px;
  text-align: center;
}

@media screen and (min-width: 1024px) {
  .a-footer__menu-pc {
    display: block;
  }

  .a-footer__menu-sp {
    display: none;
  }

  .a-footer__nav {
    max-width: 1000px;
    margin-inline: auto;
    padding-block: 70px 52px;
  }

  .a-footer-menu__list {
    display: flex;
    justify-content: space-between;
    gap: 20px;
  }

  .a-footer-menu__item {
    height: fit-content;
    padding-left: 18px;
    border-left: 2px solid var(--color-black);
  }

  .a-footer-menu__parent {
    font-family: Helvetica, sans-serif;
  }

  .a-footer-menu__link {
    font-weight: 700;
  }

  .a-footer-menu__child-list {
    display: grid;
    gap: 5px;
    margin-top: 10px;
  }

  .a-footer-menu__grandchild-list {
    display: grid;
    gap: 5px;
    margin-top: 5px;
  }

  .a-footer-menu__grandchild-link {
    color: var(--color-heading01-en);
  }

  .a-footer__bottom {
    border-top: 1px solid var(--color-black);
  }

  .a-footer__bottom-wrapper {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    max-width: 1000px;
    margin-inline: auto;
    padding-block: 18px 40px;
  }

  .a-footer__bottom-box {
    display: grid;
  }

  .a-footer__copyright {
    margin-top: auto;
    font-size: 14px;
    text-align: left;
  }
}

@media screen and (min-width: 1440px) {
  .a-footer__nav {
    max-width: 1200px;
  }

  .a-footer-menu__link {
    font-size: 20px;
  }

  .a-footer-menu__child-link {
    font-size: 17px;
  }

  .a-footer__bottom-wrapper {
    max-width: 1200px;
  }
}