@charset "UTF-8";
/* CSS Document */

/* 全体リセット */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
	font-family: "Roboto", "Noto Sans JP", sans-serif; 
	color: #fff; 
	font-size: 16px;
	background-color: #173073;
	line-height: 1.8; 
}

html {
  scroll-behavior: smooth;
}

a { color: #fff;
	text-decoration: none;
}

a:hover { 
	text-decoration: underline;
    /*color: #4a90e2;*/}

.program a,
.event_report a {
	text-decoration: underline;
	color: #96D6FF;
}

.Icon-list::after {
  content: "▶";
  display: inline-block;
  margin-left: 0.8em;
  font-size: 0.7em;
  color: #A7DEFF; 
  vertical-align: middle;
}

/* ヘッダー */
.header {
	position: fixed;
	width: 100%;
	background: #001F3F; /* ネイビー */
	height: 60px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0 2rem;
	border-bottom: 1px solid #fff;
	top: 0;
	left: 0;
	right: 0;
	z-index:100;
}
.header .logo { 
	display: flex;
	align-items: center;
}
.header .logo a { 
	line-height: 1;
}
.header .logo img{ 
	padding-right: 16px;
}

.header nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
}
.header nav {
  font-size: 0.9rem;
}

.arrow_s {
  position: relative;
  display: inline-block;
  padding-right: 15px;
}
.arrow_s:before {
  content: '';
  width: 0;
  height: 0;
  border: 5px solid transparent;
  border-top: 6px solid #fff;  
  position: absolute;
  top: 8px;
  right: 0;
  bottom: 0;
  margin: auto;
}

/* overlay-styles.css */
.hamburger-overlay {
  position: fixed;
  top: 5px;
  right: 20px;
  z-index: 1000;
  width: 48px;
  height: 48px;
  border: none;
  background: transparent;
  cursor: pointer;
}

.hamburger-overlay__line {
  position: absolute;
  left: 11px;
  width: 26px;
  height: 2px;
  background-color: #fff;
  transition: all .6s;
}

.hamburger-overlay__line:nth-of-type(1) { top: 14px; }
.hamburger-overlay__line:nth-of-type(2) { top: 23px; }
.hamburger-overlay__line:nth-of-type(3) { top: 32px; }

.hamburger-overlay.active .hamburger-overlay__line {
  background-color: #fff;
}

.hamburger-overlay.active .hamburger-overlay__line:nth-of-type(1) {
  transform: translateY(9px) rotate(-45deg);
}
.hamburger-overlay.active .hamburger-overlay__line:nth-of-type(2) {
  opacity: 0;
}
.hamburger-overlay.active .hamburger-overlay__line:nth-of-type(3) {
  transform: translateY(-9px) rotate(45deg);
}

.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.95);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.3s ease;
  opacity: 0;
  visibility: hidden;
  z-index: 99;
}

.nav-overlay.active {
  visibility: visible;
  opacity: 1;
}

.nav-overlay__content {
  width: 100%;
  text-align: center;
  max-height: 90vh; /* 画面の高さに収まるように制限 */
  overflow-y: auto; /* 内部だけスクロール可能にする */
  padding: 2rem;
}

.nav-overlay__list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.nav-overlay__item {
  opacity: 0;
  transform: translateY(20px);
  transition: all .6s;
}

.nav-overlay.active .nav-overlay__item {
  opacity: 1;
  transform: translateY(0);
}

.nav-overlay.active .nav-overlay__item:nth-child(1) { transition-delay: 0.1s; }
.nav-overlay.active .nav-overlay__item:nth-child(2) { transition-delay: 0.2s; }
.nav-overlay.active .nav-overlay__item:nth-child(3) { transition-delay: 0.3s; }
.nav-overlay.active .nav-overlay__item:nth-child(4) { transition-delay: 0.4s; }

.nav-overlay__link {
  display: inline-block;
  padding: 16px;
  color: #fff;
  font-size: 18px;
  text-decoration: none;
  transition: color .3s;
}



@media screen and (min-width: 820px) {
	.hamburger-overlay
	 {
		display:none;
	}
}

@media screen and (max-width: 819px) {
	.header-nav {
		display:none;
	}
}

/* MV */
.MV {
  height: 100vh;
  background: url('../img/BGIMG_web.jpg') center/cover no-repeat;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  margin-top: 60px; /* ヘッダー高さ分 */
  padding: 0 1rem;
}

.MV-inner{
  position: absolute;
  bottom: 30%;
  right: 10%;
  border-right: 1px solid #fff;
}

.MV_en .MV-inner{
  right: 7%;
}

.MV-inner h1, .MV-inner h2 {
   text-align: right;
}

.MV-inner h1 { 
	font-size: 1.4rem; 
	margin-bottom: 10px;
	margin-right: -10px;
	padding-right: 30px;
	border-bottom:  1px solid #fff;
}

.MV-inner h2 {
	font-size: 4rem; 
	text-shadow: 1px 1px 4px rgba(0,0,0,0.4);
	color: #fff;
	letter-spacing: 0.08rem;
	line-height: 1.2; 
}

.MV-inner .sm{
	font-size:2.3rem;
}

.MV_en h1 {
	font-size: 1.1rem;
	padding-right: 20px;
}

.MV_en h2 {
	font-size: 3rem;
	padding-right: 10px;
}


@media screen and (min-width: 820px) {
	.pc_none{
		display: none;
	}
}

@media screen and (max-width: 819px) {
	.MV-inner{
		right: 5%;
	}
	.MV-inner h2 {
	font-size: 2.2rem; 
	}
	.MV-inner .sm{
	font-size:1.8rem;
	}
	.MV_en h1 {
	font-size: 1rem;
	padding: 0 15px;
	}
	.MV_en h2 {
	font-size: 2rem;
	padding: 0 5px;
	}
}

@media (min-width: 390px) and (max-width: 819px){
		.MV-inner h1 { 
		font-size: 1.1rem; 
	}
	
}
@media screen and (max-width: 390px) {
	.MV-inner h1 { 
		font-size: 1rem; 
	}
}


/* コンテンツ */
.content {
	margin: 2em auto 0;
	text-align: center;
}

.h2_ttl,
.overview,
.program,
.movie {
  max-width: 900px;
  padding: 0 20px;
  margin: 0 auto;
}

.link-section { margin-top: 2rem; text-align: center; }
.link-section a {
  color: #0073aa;
  font-weight: bold;
  text-decoration: none;
}
.link-section a:hover { text-decoration: underline; }

.content .h2 {
	font-size: 2rem;
	line-height: 1.6; 
	padding-bottom: 10px;
	font-weight: 700;
}

.main_en {
	line-height: 1.5;
}
.main_en .h2 {
	font-size: 1.5rem;
}

.h2_text {
	font-size: 0.8rem;
	letter-spacing: 1px;
}

.h3 {
	font-size: 2rem;
	padding: 60px 0 20px;
}

.explanation-inner {
	text-align: left;
}

.explanation-inner p {
	padding-bottom: 2em;	
}

@media screen and (max-width: 819px) {
	.content .h2 {
	font-size: 1.5rem;
	}
	.main_en .h2 {
	font-size: 1.1rem;
	}
	.content {
	margin-top: 1em;
	}
}




/* program */

.program-inner dl {
	text-align: left;
	display: flex;
}

.program-inner dl dt .time-icon {
	background-color: #718AB6;
	border-radius: 3px;
	color: #001F3F;
	display: inline-block;
	line-height: 0.9;
	font-size: 12px;
	position: relative;
	padding:0.3rem 0.5rem 0.3rem 1.3rem;
}

.program-inner dl dt .time-icon::before{
  position: absolute;
  top: 4px;
  left: 4px;
  width: 14px;
  height: 14px;
  content: "";
  background: url('../img/timer.svg')no-repeat;
  color: #001F3F;
  background-size: contain;
	
}

.program-inner dl dt {
	width: 8rem;
}

.program-inner dl dd {
	padding: 0 1em;
	margin-bottom: 2em;
	border-left:1px solid #718AB6;
	width: 100%;
	font-weight: 300;
}

.program-inner .p-ttl {
	display: block;
	font-weight: 500;
}

.program-inner .p-ttl2 {
	display: block;
	padding-bottom: 10px;
}

.social_gathering {
	background-color: #274B8F;
	padding: 0.5em 0;
}

.event_report a {
	display:block;
	font-size:1.2rem;
	padding:1em 0 2em;
}


/* 申し込み */
.registration {
	padding-bottom: 2em;
}
.button {
  display: inline-block;
  background-color: #ffd700;
  opacity: 0.4;
  color: #000;
  border-radius: 10px;
  padding: 12px 40px 12px 20px;
  text-decoration: none;
  font-size: 1em;
  box-shadow: 0 5px 0 #b8860b;
  position: relative;
}

/* .button:hover {
  color: #000;
  opacity: 0.6;
} */


.button::after{
  position: absolute;
  top: 13px;
  right: 10px;
  width: 12px;
  height: 12px;
  content: "";
  border: 0;
  border-top: solid 2px #333;
  border-right: solid 2px #333;
  transform: rotate(45deg);
  position: absolute;
  top: 0;
  right: 15px;
  bottom: 0;
  margin: auto;	
  background-size: contain;	
}

/* contact*/
.contact_inner {
	padding: 2em 0;
}
.contact_txt{
	font-size: 1.5rem;
}

@media screen and (max-width: 390px) {
	#contact_en .h3 { 
		font-size: 1.8rem; 
	}
}


.youtube-wrap {
  width: 100%;
  max-width: 900px; 
  margin: 0 auto;
}
.youtube-wrap iframe {
  width: 100%;
  aspect-ratio: 16 / 9; /* 高さ自動調整 */
  border: 0;
  display: block;
}

/* access */
.access iframe {
	padding-top: 1em;
	padding-bottom: 0;
}

@media screen and (max-width: 819px) {
	.access p {
	text-align: left;
	padding: 0 2em;
	}
}

/*footer */
.site-footer {
  background: #000;
  color: #fff;
  text-align: center;
  border-top: 1px solid #666666;
  padding: 1.5rem 1rem;
  font-size: 0.6rem;
}