/*header*/
header{
  height: 80px;
  background-color: #fff;
  display: flex;
  align-items: center;
  padding: 0 24px;
  position: fixed;
  width: 100%;
  filter: drop-shadow(0px 5px 10px rgba(158, 157, 157, 0.6));
  z-index: 999;
}
header nav{
  display: flex;
  align-items: center;
  margin: 0 0 0 auto;
}
.header-logo img{
  height: 42px;
  width: auto;
}
.list_nav_header{
  display: flex;
  align-items: center;
  gap: 40px;
font-weight: bold;
}
.burger{
  width: 50px;
  height: 50px;
  background-image: url(./img/burger.svg);
  background-size: 40px;
  background-position: center;
  background-repeat: no-repeat;
  cursor: pointer;
  margin: 0 0 0 80px;
  position: relative;
  z-index: 2;
}
.burger.is-active{
  background-image: url(./img/close.svg);
}
.menu{
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 70vh;
  background-color: #efefef;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1;
  display: none;
}
.menu.is-active{
  display: flex;
}
.menu_item_wrap{
  font-size: 20px;
  font-weight: bold;
}
.menu_item_wrap li{
  margin: 0 0 1em 0;
}






.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
  }
  
  .nav-menu {
    display: flex;
    list-style: none;
    gap: 20px;
  }
  
  .hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
  }
  
  .hamburger span {
    display: block;
    height: 2px;
    width: 25px;
    margin: 4px 0;
    background: #333;
    transition: 0.4s;
  }
  
  /* ハンバーガーメニューが開いた状態 */
  .active .hamburger span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .active .hamburger span:nth-child(2) {
    opacity: 0;
  }
  
  .active .hamburger span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  /* スマホ画面での表示調整 */
  @media (max-width: 768px) {
    .nav-menu {
      display: none;
    }
  
    .hamburger {
      display: flex;
    }
  
    .active .nav-menu {
      display: flex;
      flex-direction: column;
      background-color: #f9f9f9;
      position: absolute;
      top: 60px;
      left: 0;
      right: 0;
      text-align: center;
      padding: 16px;
    }
  }