.site-header {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
	color: #fff;
	background: rgba(0, 0, 0, .60);
	font-size:	16px;
}

.header-main {
	margin-left: 20%;
    height: 15vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo img {
	width: auto;
    height: 10vh;
}

.main-nav {
	width: 67.5%;
}

.main-nav ul {
    display: flex;
	list-style: none;
}

.main-nav ul li:first-child {
	border: none;
}

.nav-content {
	text-align: center;
	font-size: 0.75vw;
	width: 15%;
	padding: 0.5em;
	border-left: 1px solid #fff;
}

.nav-text-english {
	line-height: 0.75em;
	font-size: 0.75em;
	margin-top: 0.25em;
	color: #fff;
}

.burger-menu {
	display: none;
}

.main-nav-sp {
	display: none;
}

.main-nav .nav-content.has-submenu{
  position: relative;
}

.main-nav .submenu{
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-6px);

  display: flex;
  flex-direction: column;
  gap: 4px;

  min-width: 220px;
  padding: 10px;
  margin: 12px 0 0;
  list-style: none;

  background: rgba(0,0,0,.88);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 14px;

  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(0);
  z-index: 1000;
}

.main-nav .nav-content.has-submenu:hover > .submenu,
.main-nav .nav-content.has-submenu:focus-within > .submenu{
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.main-nav .submenu li{
  width: 100%;
}

.main-nav .submenu a{
  display: block;
  width: 100%;
 padding: 7px 9px;
  border-radius: 10px;
  color: #fff;
  font-size: 14px;
  text-align: left;
  white-space: nowrap;
}



.main-nav .submenu a:hover{
  background: rgba(255,255,255,.14);
}


.main-nav .nav-content.has-submenu > .nav-link::after{
  content: "";
  position: absolute;
  width: .5em;
  height: .5em;
  border-right: 2px solid rgba(255,255,255,.9);
  border-bottom: 2px solid rgba(255,255,255,.9);
  opacity: .9;
}
.main-nav .nav-content.has-submenu:hover,
.main-nav .nav-content.has-submenu:hover > .submenu{
  pointer-events: auto;
}

.main-nav .nav-content.has-submenu > .nav-link{
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-right: 0;
  padding-bottom: 1.2em;
  position: relative;
}
.main-nav .nav-content.has-submenu::before{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 16px;
  background: transparent;
}
.main-nav .nav-content.has-submenu > .nav-link{
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-right: 0;
  padding-bottom: 1.4em; /* 矢印分の余白 */
  position: relative;
}

.main-nav .nav-content.has-submenu > .nav-link::after{
  content: "";
  position: absolute;
  left: 50%;
  bottom: .35em;               /* ← 下位置 */
  width: .5em;
  height: .5em;
  border-right: 2px solid rgba(255,255,255,.9);
  border-bottom: 2px solid rgba(255,255,255,.9);
  transform: translateX(-50%) rotate(45deg);
  opacity: .9;
}


.site-header .main-nav .submenu li > a{
  display: block !important;
  width: 100% !important;
  padding: 16px 20px !important;
}

/* タブレット用メディアクエリ */
@media (min-width: 768px) and (max-width: 1024px) {
	.header-main {
		margin-left: 5%;
		height: 7.5vh;
	}
	
	.logo {
		height: 85%;
		margin: auto 0;
	}
	
	.logo img {
		height: 100%;
		width: auto;
	}
	
	.nav-content {
		font-size: 1.25vw;
	}
}

/* スマホ用メディアクエリ */
@media(max-width: 767px) {
	.header-main {
		flex-wrap: wrap;
		margin: 0 1em;
		height: auto;
	}
	
	.logo {
		height: 50px;
	}
	
	.logo img {
		width: auto;
		height: 100%;
		margin-top: 8px;
	}
	
	.main-nav {
		display: none;
	}
	
	/* ハンバーガーメニューのスタイル */
	.burger-menu {
		display: block;
		width: 2em;
		cursor: pointer;
				margin-top: 12px;
	}
	
	/* ハンバーガーメニューのアイコンのスタイル */
	.burger-line {
		display: block;
		width: 100%;
		height: 0.4em;
		background-color: #fff;
		margin-bottom: 0.3em;
	}
	
@media (max-width: 767px){


  .main-nav-sp{
    display: block;
    width: 100%;
    text-align: center;
font-size: 1.2em;
    opacity: 0;
    transform: translateY(-10px);
    max-height: 0;
    overflow: hidden;
    pointer-events: none;
    transition:
      opacity .35s ease,
      transform .35s ease,
      max-height .45s ease;
  }

  #menu-toggle:checked ~ .main-nav-sp{
    opacity: 1;
    transform: translateY(0);
    max-height: 60vh;
    pointer-events: auto;
  }
  .main-nav-sp h1{
    margin: 10px 0 0;
    font-size: 1em;
    font-weight: 600;
  }

  .main-nav-sp a{
    display: block;
    padding: 12px 8px;
    border-radius: 12px;
  }

  .main-nav-sp a:hover{
    background: rgba(255,255,255,.14);
  }

  .main-nav-sp h1{
    opacity: 0;
    transform: translateY(6px);
    transition: opacity .35s ease, transform .35s ease;
  }

  #menu-toggle:checked ~ .main-nav-sp h1{
    opacity: 1;
    transform: translateY(0);
  }

  #menu-toggle:checked ~ .main-nav-sp h1:nth-child(1){ transition-delay: .05s; }
  #menu-toggle:checked ~ .main-nav-sp h1:nth-child(2){ transition-delay: .10s; }
  #menu-toggle:checked ~ .main-nav-sp h1:nth-child(3){ transition-delay: .15s; }
  #menu-toggle:checked ~ .main-nav-sp h1:nth-child(4){ transition-delay: .20s; }
  #menu-toggle:checked ~ .main-nav-sp h1:nth-child(5){ transition-delay: .25s; }
  #menu-toggle:checked ~ .main-nav-sp h1:nth-child(6){ transition-delay: .30s; }
  #menu-toggle:checked ~ .main-nav-sp h1:nth-child(7){ transition-delay: .35s; }
}
	.main-nav-sp h1 {
		margin-top: 0;
	}
	

	
	/* ハンバーガーがXに変形 */
	#menu-toggle:checked + .burger-menu span:nth-child(1) {
		transform: translateY(0.68em) rotate(45deg);
		transition: transform 0.5s ease;
	}
	#menu-toggle:checked + .burger-menu span:nth-child(2) {
		opacity: 0;
		transition: transform 0.5s ease;
	}
	#menu-toggle:checked + .burger-menu span:nth-child(3) {
		transform: translateY(-0.68em) rotate(-45deg);
		transition: transform 0.5s ease;
	}
	
	/* ハンバーガーをもとに戻す */
	.burger-menu span:nth-child(1) {
		transform: translateY(0) rotate(0);
		transition: transform 0.5s ease;
	}
	.burger-menu span:nth-child(2) {
		opacity: 1;
		transition: transform 0.5s ease;
	}
	.burger-menu span:nth-child(3) {
		transform: translateY(0) rotate(0);
		transition: transform 0.5s ease;
	}
}


@media (max-width: 767px) {
  .main-nav-sp{
    padding: 10px 0 16px;
  }

  .main-nav-sp .sp-item,
  .main-nav-sp .sp-subitem{
    display: block;
    text-align: left;
    padding: 14px 12px;
    border-radius: 14px;
    color: #fff;
  }

  .main-nav-sp .sp-item:hover,
  .main-nav-sp .sp-subitem:hover{
    background: rgba(255,255,255,.14);
  }

  .main-nav-sp .sp-acc{
    margin: 6px 0;
    border-radius: 14px;
    background: rgba(255,255,255,.06);
    overflow: hidden;
  }

  .main-nav-sp .sp-acc-title{
    list-style: none;
    cursor: pointer;
    padding: 14px 12px;
    font-weight: 700;
    position: relative;
  }

  .main-nav-sp .sp-acc-title::-webkit-details-marker{
    display:none;
  }

  .main-nav-sp .sp-acc-title::after{
    content:"";
    position:absolute;
    right: 14px;
    top: 50%;
    width: .55em;
    height: .55em;
    border-right: 2px solid rgba(255,255,255,.9);
    border-bottom: 2px solid rgba(255,255,255,.9);
    transform: translateY(-60%) rotate(45deg);
    transition: transform .2s ease;
  }

  .main-nav-sp details[open] > .sp-acc-title::after{
    transform: translateY(-40%) rotate(-135deg);
  }

  .main-nav-sp .sp-acc-panel{
    padding: 0 6px 8px;
  }

  .main-nav-sp .sp-subitem{
    padding: 12px 12px;
    margin: 2px 0;
    background: rgba(0,0,0,.18);
  }

  .main-nav-sp{
    overflow: hidden;
  }
  #menu-toggle:checked ~ .main-nav-sp{
    max-height: calc(100svh - 120px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    pointer-events: auto;
  }
	#menu-toggle:checked ~ .main-nav-sp{
  max-height: 100vh;
}
@supports (height: 100dvh){
  #menu-toggle:checked ~ .main-nav-sp{
    max-height: 100dvh;
  }
}
@supports (height: 100svh){
  #menu-toggle:checked ~ .main-nav-sp{
    max-height: 100svh;
  }
}
}
@media (max-width: 767px){
  .site-header{
    transition: background-color .35s ease;
  }
  .site-header.is-open{
background-color: rgba(0,0,0,.9);
  }
}