/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans JP", sans-serif;
  color: #0f0f0f;
  font-size: 18px;
  line-height: 1.8;
  /* railの80px分右に余白 */
  margin-right: 80px;
}
a{color:#165e83;text-decoration: none;font-weight: 600;}
/* ===== MAIN ===== 
.nt-main {
  max-width: 860px;
  margin: 0 auto;
  background: #fff;
  border-right: 1px solid #e2e2e0;
}*/

.layout-budy {
    display: flex;
    flex-direction: column;;
    /*background: linear-gradient(0deg, rgba(185, 192, 183, 1), rgba(156, 159, 155, 1));
    background-size: 200% 200%;*/
    animation: Grad 10s ease infinite;}
.left-content{


}
.background{
opacity: 0.1;
    left: 0;
	top:20%;
    position: fixed;}
.left-text{
	padding:15%  0 0 2%;
    flex-direction: column;
    left: 0;
	top:15%;
    position: fixed;
    z-index: -1;
    width: calc(100% - 600px - max(80px, 5.5555555556vw, (100vw - 1440px) * .4 + 80px));
    height: 100vh;
    height: 100dvh;
display: flex;
	    align-items: flex-start;
background:url("img/logobg.png") no-repeat center;
	background-size:60%;
	background-position: -30% 20%;
}
.left-text span{
	padding:10px;
	margin:10px 0;
	background:#fff;
font-size:  clamp(1em, 6vw, 1.5em);
	font-weight: 600;
}
.right-content{
	  display: flex;
    flex: 1;
    flex-direction: row;
    justify-content: flex-end;
margin:5% 100px 5% 0;
}
.nt-main {
  max-width: 600px;
}
footer,.footer-copyright{
    margin-right: 79px;
}
/* ===== RIGHT RAIL（sdb: position:fixed, right:0, width:80px） ===== */
.layout-rail {
  position: fixed;
  top: 0;
  right: 0;
  width: 80px;
  height: 100vh;
  background: #f5f5f3;
  border-left: 1px solid #e2e2e0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-around;
  padding: 24px 0;
  z-index: 100;
}
.rail-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.rail-logo-mark {
  width: 40px; height: 40px;
  background: url("img/logo1.png") no-repeat center;
	background-size: cover;
  display: flex; align-items: center; justify-content: center;
}
.rail-logo-mark svg { width: 13px; height: 13px; }
.rail-logo-text {
  font-size: 6px; font-weight: 700;
  letter-spacing: 0.08em; text-align: center;
  line-height: 1.4; color: #0f0f0f;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  margin-top: 8px;
}

/* ドットナビ（sdb: .nav） */
.rail-nav {
  display: flex;
  flex-direction: column;
   align-items:flex-end;
align-content:flex-end;
  gap: 10px;
}
.rail-nav-item {
     height: 20px;
	width:24px;
    background: transparent;
    cursor: pointer;
    transition: background 0.2s, height 0.2s;
    position: relative;
    display: flex;
    padding: 4px 0;
    justify-content: flex-end;
    align-items: center;
}
.rail-nav-item span{
  background: #0f0f0f;
  height: 2px;
width:18px;
	transform-origin: center right;
}
.rail-nav-item:hover,
.rail-nav-item.is-active {
}
.rail-nav-item:hover span,
.rail-nav-item.is-active span {
  background: #165e83;
  height: 4px;
  translate: 1px 0;
width:24px;
}
.rail-nav-item::after {
  content: attr(data-label);
  position: absolute;
  right: calc(100% + 12px);
  top: 50%; transform: translateY(-50%);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: #f5f5f3;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
  background: #165e83;
  padding: 2px 6px;
}
.rail-nav-item:hover::after { opacity: 1; }

.rail-sns {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.rail-sns a {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid #bbb;
  display: flex; align-items: center; justify-content: center;
  color: #0f0f0f; text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
.rail-sns a:hover { background: #0f0f0f; color: #fff; }
.rail-sns svg { width: 20px; height: 20px; }

/* ===== HERO ===== */
.hero {
  position: relative;
  border: 1px solid #e2e2e0;
	border-radius: 20px;
background: rgba(242, 242, 242, 0.9);
margin-top: 0;
height: auto;}
.hero-visual {
  width: 100%; 
  overflow: hidden; position: relative;
	text-align: center;

background:url("img/logobg.png") no-repeat 50% 45%;

	background-size:40%;

}
.hero-overlay2 {
  display: flex; flex-direction: column;
  padding: 52px 26px;
align-items: center;
}
.hero-logo img{
	width: 70%;

}
.hero-date {
	margin-top:40px;
	  font-family: "Noto Sans JP", sans-serif;
  font-size: clamp(14px, 9vw, 22px);
  letter-spacing: 0.01em; 
  display: block;
}
.hero-date2 {
	margin-top:20px;
	  font-family: "Noto Sans JP", sans-serif;
  font-size: clamp(8px, 9vw, 16px);
  letter-spacing: 0.01em; 
  display: block;
}
.hero-body {
  padding: 44px 56px 52px;
	display: flex;
    flex-direction: column;
    align-items: center;}
.hero-tagline {
  font-weight: 500;
  letter-spacing: 0.05em;
  color: #333; margin-bottom: 20px;
	text-align: center;font-size:1.2em;
}
.hero-info {/* display: flex; flex-direction: column; gap: 14px;  */ align-items: center;}
.hero-info-row { display: flex; align-items: baseline;}
.hero-info-time { font-weight: 600;font-size:1.5em;margin-bottom:40px;}
.hero-info-time span{ display: flex;gap:1em;align-items: center;    justify-content: center;
}
.hero-info-time .time{ }
.hi-lbl {font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: #888; width: 56px; flex-shrink: 0;
}
.hi-val {font-weight: 500; }
.hi-val .font-s{font-size:12px;line-height:1;}
.hi-val strong { font-size: 18px; }

/* ===== SECTION（sdb: .content-section） ===== */
h3,h4,h5{margin-top:20px;}


.sec {
  padding: 80px 56px;
  border: 1px solid #e2e2e0;
	margin-top:20px;
	border-radius: 20px;
background:rgba(242, 242, 242, 1);
}

/* sdb: .title = dot + h2 + accent */

h2,.sec-title-h2  {
  margin-bottom: 52px;
font-size: clamp(14px, 9vw, 30px);
text-align: center;
font-weight: 500;}
h2 span{
	letter-spacing: 0.1em;
  color: #888;
	display: block;
	margin-top: 4px;
	display:block;
font-size: clamp(9px, 3vw, 18px);
font-family: 'gotham', sans-serif;}
.sec-title  span{}
.sec-title-text-wrap {}
.sec-title-h2 {
  font-weight: 500;
  letter-spacing: 0.04em; line-height: 1.3;
  display: block;
}
.sec-title-accent {
;
}

/* ===== BTN ===== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 28px; margin-top: 36px;
  background: #165e83; color: #fff;
  font-size: 10px; font-weight: 700; letter-spacing: 0.18em;
  text-transform: uppercase; text-decoration: none;
  border: 1px solid #0f0f0f; cursor: pointer;
  transition: background 0.2s, color 0.2s;
    border-radius: 30px;
}
.btn:hover { background: #fff; color: #0f0f0f; }
.btn-ghost { background: transparent; color: #0f0f0f; }
.btn-ghost:hover { background: #0f0f0f; color: #fff; }

/* ===== NEWS ===== */
.news-list { list-style: none; }
.news-item {
  display: grid; grid-template-columns: 170px 1fr;
  align-items: center;
  padding: 18px 0; border-bottom: 1px solid #e2e2e0;
  cursor: pointer; transition: opacity 0.2s;
}
.news-item:first-child { border-top: 1px solid #e2e2e0; }
/*.news-item:hover { opacity: 0.55; }*/
.news-meta { display: flex; align-items: center; gap: 10px; }
.news-date {     font-family: 'gotham', sans-serif;font-size: 15px; color: #888; letter-spacing: 0.05em; margin-top: 0;}
.news-tag { font-size: 8px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; padding: 2px 8px; background: #0f0f0f; color: #fff; }
.news-ttl { font-size: 15px; font-weight: 500; line-height: 1.65; }

/* ===== TIMETABLE ===== */
.tt-item { border-top: 1px solid #e2e2e0; }
.tt-item:last-child { border-bottom: 1px solid #e2e2e0; }
.tt-trigger {
  display: flex; align-items: center; gap: 16px;
  padding: 20px 0; cursor: pointer; user-select: none;
}
.tt-dot { width: 8px; height: 8px; border-radius: 50%; background: #0f0f0f; flex-shrink: 0; }
.tt-time {     font-family: 'gotham', sans-serif;letter-spacing: 0.04em; flex-shrink: 0;}
.tt-name { font-weight: 700; flex: 1; }
.tt-arrow { font-size: 15px; color: #888; transition: transform 0.25s; }
.tt-item.is-open .tt-arrow { transform: rotate(180deg); }
.tt-body { display: none; padding: 0 0 28px 24px; }
.tt-item.is-open .tt-body { display: block; }
.tt-desc {margin-bottom: 20px;     line-height: 1.5;font-size:15px;
}
.tt-speakers { display: flex; flex-direction: column; gap: 16px; }
.tt-sp { display: grid; grid-template-columns: 100px 1fr; gap: 18px; cursor: pointer; transition: opacity 0.2s; }
.tt-sp:hover { opacity: 0.6; }
.tt-sp-img {  background: #e2e2e0; display: flex; align-items: center; justify-content: center; color: #888; font-size: 9px; }
.tt-sp-img img{  width:100%; }
.tt-sp-role { font-size: 12px; color: #888; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 2px; }
.tt-sp-name { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.tt-sp-desc { font-size: 18px; color: #666; line-height: 1.7; }
/* モーダルの背景 */
.modal {
    display: none; /* デフォルトでは非表示 */
    position: fixed; /* 画面に固定 */
    z-index: 1; /* 他の要素の上に表示 */
    left: 0;
    top: 0;
    width: 100%; /* 全幅 */
    height: 100%; /* 全高さ */
    overflow: auto; /* スクロール可能 */
    background-color: rgb(0,0,0); /* 背景色 */
    background-color: rgba(0,0,0,0.4); /* 透過 */
}

/* モーダルコンテンツ */
.modal-content {
    background-color: #fefefe;
    margin: 15% auto; /* 中央に配置 */
    padding: 20px;
    border: 1px solid #888;
    width: 80%; /* 幅 */
}

/* ===== MAP ===== */
.map-frame {
  width: 100%; 
  color: #888; font-size: 11px; letter-spacing: 0.1em;
  margin-bottom: 24px;
}

/* ===== SPEAKERS ===== */
.sp-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.sp-feat { position: sticky; top: 0; }
.sp-feat-photo { width: 100%; aspect-ratio: 3/4; background: #e2e2e0; display: flex; align-items: center; justify-content: center; color: #888; font-size: 11px; margin-bottom: 18px; }
.sp-feat-role { font-size: 9px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: #888; margin-bottom: 4px; }
.sp-feat-name { font-size: 20px; font-weight: 700; line-height: 1.3; margin-bottom: 3px; }
.sp-feat-en {     font-family: 'gotham', sans-serif;font-size: 14px; color: #888; letter-spacing: 0.1em; margin-bottom: 14px; }
.sp-feat-desc { font-size: 12px; color: #555; line-height: 2; }
.sp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.sp-card { cursor: pointer; transition: opacity 0.2s; }
.sp-card:hover { opacity: 0.6; }
.sp-card-img { width: 100%; aspect-ratio: 1/1; background: #e2e2e0; display: flex; align-items: center; justify-content: center; color: #888; font-size: 9px; margin-bottom: 8px; }
.sp-card-name { font-size: 11.5px; font-weight: 700; line-height: 1.4; }
.sp-card-role { font-size: 9px; color: #888; }

/* ===== EXHIBITORS ===== */
.ex-grid { display: grid;grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 30px 10px; margin-bottom: 36px; }
.ex-card { cursor: pointer; transition: opacity 0.2s; list-style: none;}
.ex-name:hover { opacity: 0.6; }
.ex-img { width: 100%; background: #fff; display:flex;flex-direction: column;vertical-align: middle;justify-content: space-around;  aspect-ratio: 1/1;position:relative;}
.ex-img img{ width: 100%; }
.ex-img .cate{position: absolute;top:0;left:0; background:#165e83;font-size:12px;padding:1px;color:#fff;}
.ex-name { font-size: 0.8em;  line-height: 1.2; text-align: center;margin-top:5px;}
.ex-name2 { font-size: 0.8em;  line-height: 1.2; text-align: center;margin-top:10px;}
.ex-role { font-size: 0.5em; color: #888; }
/*.org-block { border-top: 1px solid #e2e2e0; }
/*.org-row { display: flex; gap: 28px; padding: 16px 0; font-size: 13px; }
/*.org-lbl { font-size: 9px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: #888; width: 56px; flex-shrink: 0; padding-top: 3px; }
text-align: center;*/
.m-photo.is-card {
  max-width: 480px;
  margin: 0 auto;
}
.m-photo.is-card img {
  border-radius: 8px;
}
.sponser{text-align: center;}
.sponser-list {display:grid;  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 30px 10px;
	margin: 20px 0;list-style: none;}
.sponser-list li{display: flex;
    flex-direction: column;
    vertical-align: middle;
    justify-content: space-around;
 background: #fff;}
.sponser-list li:hover{
opacity:0.7;}
.sponser-list li a{display: flex;
    height: 100%;
    align-items: center;
}
.sponser-list li img{ width: 100%; 
}
/* ===== FAQ ===== */
.faq-list { list-style: none; }
.faq-item { border-top: 1px solid #e2e2e0; }
.faq-item:last-child { border-bottom: 1px solid #e2e2e0; }
.faq-q { display: flex; align-items: center; gap: 16px; padding: 20px 0; cursor: pointer; user-select: none; }
.faq-qm { font-family: 'gotham', sans-serif;font-size: 18px; color: #888; width: 22px; flex-shrink: 0; }
.faq-qt { flex: 1; font-size: 1em; font-weight: 500; }
.faq-qa-arrow { font-size: 9px; color: #888; transition: transform 0.25s; }
.faq-item.is-open .faq-qa-arrow { transform: rotate(180deg); }
.faq-a { display: none; padding: 0 0 22px 38px; font-size: 15px; color: #555; line-height: 2; }
.faq-item.is-open .faq-a { display: block; }

/* ===== FOOTER ===== */
.footer-banner {
  background: #0f0f0f; color: #fff;
  padding: 72px 56px 64px;
}
.fb-en {
  font-size: clamp(40px, 6vw, 72px);
  letter-spacing: 0.01em; line-height: 0.92;
  display: block;
}
.fb-date {
  font-size: clamp(24px, 4vw, 42px);
  letter-spacing: 0.03em; margin-top: 8px; display: block;
}
.fb-date span { font-size: 0.5em; opacity: 0.45; margin-left: 12px; }
.fb-copy { font-size: 12px; color: rgba(255,255,255,0.3); line-height: 2; margin-top: 24px; }

/* ===== MODAL ===== */
.nt-modal {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.82);
  z-index: 99999;
  align-items: center; justify-content: center; padding: 24px;
}
.nt-modal.is-open { display: flex; }
.m-box { background: #fff; max-width: 500px; width: 100%; max-height: 88vh; overflow-y: auto; position: relative; }
.m-close { position: absolute; top: 14px; right: 14px; width: 32px; height: 32px; background: none; border: none; cursor: pointer; font-size: 20px; color: #0f0f0f; display: flex; align-items: center; justify-content: center; z-index: 1; }
.m-photo { width: 100%; background: #e2e2e0; display: flex; align-items: center; justify-content: center; color: #888; font-size: 12px; }
.m-photo img{ width:stretch; }
.m-body { padding: 28px 32px 36px; }
.m-role { font-size: 14px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: #888; margin-bottom: 6px; }
.m-name { font-size: 22px; font-weight: 700; line-height: 1.3; margin-bottom: 3px; }
.m-en {     font-family: 'gotham', sans-serif;font-size: 18px; color: #888; letter-spacing: 0.1em; margin-bottom: 18px; }
.m-desc { font-size: 20px; color: #444; line-height: 2; }
.m-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.m-tag { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; padding: 3px 10px; border: 1px solid #bbb; }

.toggle-text {
  font-size: 12px;
  color: #888;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  min-width: 42px;
  text-align: right;
}
/* ===== SP HAMBURGER BTN ===== */
.sp-btn {
  display: none;
  position: fixed;
  top: 14px; right: 14px;
  width: 46px; height: 46px;
  background: #0f0f0f;
  border: none; cursor: pointer;
  flex-direction: column;
  align-items: center; justify-content: center;
  gap: 5px; z-index: 300;
  border-radius: 2px;
}
.sp-btn span {
  display: block;
  width: 22px; height: 2px;
  background: #fff;
  transition: transform 0.3s, opacity 0.3s;
  border-radius: 1px;
}

/* ===== SP MENU（sdb: 全画面オーバーレイ） ===== */
.sp-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 15, 20, 0.97);
  z-index: 250;
  flex-direction: column;
  padding: 80px 32px 40px;
  overflow-y: auto;
  opacity: 0;
  transition: opacity 0.3s;
}
.sp-menu.is-open {
  opacity: 1;
}
.sp-menu-close {
  position: absolute;
  top: 14px; right: 14px;
  width: 46px; height: 46px;
  background: none; border: none;
  cursor: pointer; color: #fff;
  font-size: 24px;
  display: flex; align-items: center; justify-content: center;
}
.sp-menu-nav {
  list-style: none;
  flex: 1;
  margin-bottom: 32px;
}
.sp-menu-nav li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  transition: color 0.2s;
}
.sp-menu-nav li:first-child a { border-top: 1px solid rgba(255,255,255,0.12); }
.sp-menu-nav li a:hover { color: rgba(255,255,255,0.5); }
.sp-menu-nav li a .arr {
  font-size: 16px;
  opacity: 0.4;
}
.sp-menu-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}
.sp-menu-link-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.04em;
}
.sp-menu-link-btn.primary {
  background: rgb(115, 154, 101);
  color: #fff;
}
.sp-menu-link-btn.secondary {
  background: #fff;
  color: #0f0f0f;
}
.sp-menu-sns {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sp-menu-sns a {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: rgba(255,255,255,0.7);
  transition: color 0.2s;
}
.sp-menu-sns a:hover { color: #fff; }
.sp-menu-sns-icon {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.sp-menu-sns-icon svg { width: 14px; height: 14px; }
.sp-menu-sns-text { font-size: 12px; line-height: 1.5; }
.sp-menu-sns-text strong { display: block; font-size: 13px; color: #fff; }

@media (max-width: 680px) {
  body { margin-right: 0; }
  .layout-rail { display: none; }
  .sp-btn { display: flex; }
 /* .hero-visual { height: 60vw; min-height: 220px; }*/
  .hero-overlay { padding: 24px; }
  .hero-body { padding: 32px 20px 40px; }
  .sec { padding: 52px 20px; }
  .sp-layout { grid-template-columns: 1fr; }
  .sp-grid { grid-template-columns: repeat(3, 1fr); }
  .ex-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));}
  .news-item { grid-template-columns: 1fr; gap: 6px; }
  .footer-banner { padding: 48px 20px; }
}



/* ===== RESET ===== */
#nt3 *, #nt3 *::before, #nt3 *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ===== ROOT ===== */
#nt3 {
  --bg:      #f5f5f3;
  --white:   #ffffff;
  --black:   #0f0f0f;
  --gray:    #888888;
  --gray-l:  #e2e2e0;
  --gray-m:  #c0c0be;
  --en:      'Bebas Neue', 'Impact', sans-serif;
  --ja:      'Noto Sans JP', sans-serif;
  font-family: var(--ja);
  background: var(--bg);
  color: var(--black);
  font-size: 14px;
  line-height: 1.75;
  width: 100%;
}

/* ===== 3カラムグリッド ===== */
#nt3 .nt-wrap {
  display: grid;
  grid-template-columns: 200px 1fr 200px;
  max-width: 1200px;
  margin: 0 auto;
  align-items: start;
}

/* ===== LEFT COLUMN ===== */
#nt3 .col-l {
  /* sdb参考：左カラムはスクロールに追随しない、ページと流れる */
  padding: 0;
}
#nt3 .col-l-inner {
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--black);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
#nt3 .col-l-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: grayscale(100%) brightness(0.35);
  z-index: 0;
  /* 背景画像: background-image: url('画像パス'); */
}
#nt3 .col-l-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  padding: 32px 22px;
}
#nt3 .l-logo {
  display: flex;
  align-items: center;
  gap: 9px;
}
#nt3 .l-logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
#nt3 .l-logo-mark svg { width: 14px; height: 14px; }
#nt3 .l-logo-text {
  color: #fff;
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.45;
}
#nt3 .l-logo-text small {
  display: block;
  font-size: 7px;
  font-weight: 300;
  letter-spacing: 0.12em;
  opacity: 0.6;
  margin-top: 2px;
}
#nt3 .l-copy {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  line-height: 2.1;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 0;
}
#nt3 .l-date {
  font-family: var(--en);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: rgba(255,255,255,0.5);
  text-align: center;
}
#nt3 .l-date span {
  display: block;
  font-size: 10px;
  opacity: 0.6;
  margin-top: 2px;
}

/* ===== MAIN COLUMN ===== */
#nt3 .col-m {
  background: var(--white);
  border-left: 1px solid var(--gray-l);
  border-right: 1px solid var(--gray-l);
  min-width: 0;
}

/* ===== RIGHT COLUMN ===== */
#nt3 .col-r {
  /* ページと同じ高さで自然に流れる（sdb方式） */
  background: var(--bg);
}
#nt3 .nav-sticky {
  /* ナビブロック単体をstickyに */
  position: sticky;
  top: 0;
  padding: 28px 18px 24px;
  background: var(--bg);
  z-index: 10;
}
#nt3 .nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-l);
}
#nt3 .nav-logo-mark {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
#nt3 .nav-logo-mark svg { width: 11px; height: 11px; }
#nt3 .nav-logo-text {
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.45;
  color: var(--black);
}
#nt3 .nav-logo-text small {
  display: block;
  font-size: 6.5px;
  font-weight: 300;
  letter-spacing: 0.12em;
  opacity: 0.45;
}
#nt3 .nav-list {
  list-style: none;
}
#nt3 .nav-list li a {
  display: block;
  padding: 8px 0;
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--black);
  text-decoration: none;
  border-bottom: 1px solid var(--gray-l);
  transition: color 0.2s;
}
#nt3 .nav-list li:first-child a {
  border-top: 1px solid var(--gray-l);
}
#nt3 .nav-list li a:hover,
#nt3 .nav-list li a.is-active {
  color: var(--gray);
}
#nt3 .nav-sns {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
#nt3 .nav-sns a {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--gray-m);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--black);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
#nt3 .nav-sns a:hover {
  background: var(--black);
  color: var(--white);
}
#nt3 .nav-sns svg { width: 12px; height: 12px; }

/* ===== SECTION BASE ===== */
#nt3 .sec {
  padding: 56px 44px;
  border-bottom: 1px solid var(--gray-l);
}
/* sdb風セクション見出し：大EN + 小JA */
#nt3 .sec-hd {
  margin-bottom: 36px;
  overflow: hidden;
}
#nt3 .sec-hd-en {
  font-family: var(--en);
  font-size: 52px;
  letter-spacing: 0.02em;
  line-height: 0.9;
  color: var(--black);
  display: block;
}
#nt3 .sec-hd-ja {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray);
  display: block;
  margin-top: 6px;
}

/* ===== HERO ===== */
#nt3 .hero-visual {
  width: 100%;
  height: 320px;
  background: #b8b8b6;
  overflow: hidden;
  position: relative;
}
#nt3 .hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  display: block;
}
#nt3 .hero-visual-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #aaa;
  font-size: 11px;
  letter-spacing: 0.1em;
}
#nt3 .hero-body {
  padding: 36px 44px 48px;
}
#nt3 .hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 12px;
}
#nt3 .hero-eyebrow-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--black);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
#nt3 .hero-eyebrow-dot svg { width: 10px; height: 10px; }
#nt3 .hero-title {
  font-family: var(--en);
  font-size: 42px;
  letter-spacing: 0.02em;
  line-height: 1.0;
  margin-bottom: 4px;
}
#nt3 .hero-subtitle {
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.1em;
  margin-bottom: 28px;
}
#nt3 .hero-quote {
  padding: 16px 20px;
  background: var(--bg);
  border-left: 3px solid var(--black);
  font-size: 13px;
  line-height: 2.0;
  color: #444;
  margin-bottom: 32px;
}
#nt3 .hero-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
#nt3 .hero-info-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
}
#nt3 .info-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
  width: 52px;
  flex-shrink: 0;
}
#nt3 .info-value {
  font-size: 14px;
  font-weight: 500;
}
#nt3 .info-value strong {
  font-size: 16px;
}

/* ===== BUTTON ===== */
#nt3 .btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 32px;
  padding: 12px 26px;
  background: var(--black);
  color: var(--white);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--black);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
#nt3 .btn:hover { background: var(--white); color: var(--black); }
#nt3 .btn-ghost {
  background: transparent;
  color: var(--black);
}
#nt3 .btn-ghost:hover {
  background: var(--black);
  color: var(--white);
}

/* ===== NEWS ===== */
#nt3 .news-list { list-style: none; }
#nt3 .news-item {
  display: grid;
  grid-template-columns: 148px 1fr;
  align-items: center;
  gap: 20px;
  padding: 15px 0;
  border-bottom: 1px solid var(--gray-l);
  cursor: pointer;
  transition: opacity 0.2s;
}
#nt3 .news-item:first-child { border-top: 1px solid var(--gray-l); }
#nt3 .news-item:hover { opacity: 0.6; }
#nt3 .news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}
#nt3 .news-date {
  font-family: var(--en);
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--gray);
  flex-shrink: 0;
}
#nt3 .news-tag {
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 2px 8px;
  background: var(--black);
  color: var(--white);
  white-space: nowrap;
}
#nt3 .news-title {
  font-size: 13px;
  font-weight: 500;
  line-height: 1.6;
}

/* ===== TIMETABLE ===== */
#nt3 .tt-list { }
#nt3 .tt-item {
  border-top: 1px solid var(--gray-l);
}
#nt3 .tt-item:last-child {
  border-bottom: 1px solid var(--gray-l);
}
#nt3 .tt-trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  user-select: none;
}
#nt3 .tt-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--black);
  flex-shrink: 0;
}
#nt3 .tt-time {
  font-family: var(--en);
  font-size: 20px;
  letter-spacing: 0.04em;
  flex-shrink: 0;
  min-width: 114px;
}
#nt3 .tt-name {
  font-size: 13px;
  font-weight: 700;
  flex: 1;
}
#nt3 .tt-arrow {
  font-size: 9px;
  color: var(--gray);
  transition: transform 0.25s;
  flex-shrink: 0;
}
#nt3 .tt-item.is-open .tt-arrow { transform: rotate(180deg); }
#nt3 .tt-body {
  display: none;
  padding: 0 0 28px 22px;
}
#nt3 .tt-item.is-open .tt-body { display: block; }
#nt3 .tt-desc {
  font-size: 12px;
  color: #555;
  line-height: 1.9;
  margin-bottom: 20px;
}
/* タイムテーブル内登壇者：横並びカード */
#nt3 .tt-speakers { display: flex; flex-direction: column; gap: 14px; }
#nt3 .tt-sp {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 16px;
  align-items: start;
  cursor: pointer;
  transition: opacity 0.2s;
}
#nt3 .tt-sp:hover { opacity: 0.65; }
#nt3 .tt-sp-img {
  width: 68px;
  height: 68px;
  background: var(--gray-l);
  object-fit: cover;
  filter: grayscale(100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray);
  font-size: 9px;
  flex-shrink: 0;
}
#nt3 .tt-sp-role {
  font-size: 9px;
  color: var(--gray);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
#nt3 .tt-sp-name {
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 4px;
}
#nt3 .tt-sp-desc {
  font-size: 11px;
  color: #666;
  line-height: 1.7;
}

/* ===== MAP ===== */
#nt3 .map-frame {
  width: 100%;
  height: 280px;
  background: var(--gray-l);
  border: 1px solid var(--gray-m);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray);
  font-size: 11px;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}
#nt3 .map-detail {
  font-size: 12.5px;
  color: #555;
  line-height: 2.1;
}

/* ===== SPEAKERS ===== */
#nt3 .sp-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start;
}
#nt3 .sp-feat {
  position: sticky;
  top: 0;
}
#nt3 .sp-feat-photo {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--gray-l);
  object-fit: cover;
  filter: grayscale(100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray);
  font-size: 11px;
  margin-bottom: 16px;
}
#nt3 .sp-feat-role {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 4px;
}
#nt3 .sp-feat-name {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 3px;
}
#nt3 .sp-feat-en {
  font-family: var(--en);
  font-size: 14px;
  color: var(--gray);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}
#nt3 .sp-feat-desc {
  font-size: 11.5px;
  color: #555;
  line-height: 1.95;
}
#nt3 .sp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
#nt3 .sp-card {
  cursor: pointer;
  transition: opacity 0.2s;
}
#nt3 .sp-card:hover { opacity: 0.65; }
#nt3 .sp-card-img {
  width: 100%;
  aspect-ratio: 1/1;
  background: var(--gray-l);
  object-fit: cover;
  filter: grayscale(100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray);
  font-size: 9px;
  margin-bottom: 8px;
}
#nt3 .sp-card-name {
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
}
#nt3 .sp-card-role {
  font-size: 9px;
  color: var(--gray);
}

/* ===== EXHIBITORS ===== */
#nt3 .ex-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 36px;
}
#nt3 .ex-card {
  cursor: pointer;
  transition: opacity 0.2s;
}
#nt3 .ex-card:hover { opacity: 0.65; }
#nt3 .ex-img {
  width: 100%;
  aspect-ratio: 1/1;
  background: var(--gray-l);
  object-fit: cover;
  filter: grayscale(100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray);
  font-size: 9px;
  margin-bottom: 8px;
}
#nt3 .ex-name {
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
}
#nt3 .ex-role {
  font-size: 9px;
  color: var(--gray);
}
#nt3 .org-table { width: 100%; border-top: 1px solid var(--gray-l); }
#nt3 .org-row {
  display: flex;
  gap: 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-l);
  font-size: 12.5px;
}
#nt3 .org-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  width: 52px;
  flex-shrink: 0;
  padding-top: 3px;
}

/* ===== FAQ ===== */
#nt3 .faq-list { list-style: none; }
#nt3 .faq-item { border-top: 1px solid var(--gray-l); }
#nt3 .faq-item:last-child { border-bottom: 1px solid var(--gray-l); }
#nt3 .faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  user-select: none;
}
#nt3 .faq-q-mark {
  font-family: var(--en);
  font-size: 16px;
  color: var(--gray);
  flex-shrink: 0;
  width: 22px;
}
#nt3 .faq-q-text {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
}
#nt3 .faq-q-arrow {
  font-size: 9px;
  color: var(--gray);
  transition: transform 0.25s;
  flex-shrink: 0;
}
#nt3 .faq-item.is-open .faq-q-arrow { transform: rotate(180deg); }
#nt3 .faq-a {
  display: none;
  padding: 0 0 20px 36px;
  font-size: 12.5px;
  color: #555;
  line-height: 1.95;
}
#nt3 .faq-item.is-open .faq-a { display: block; }

/* ===== FOOTER BANNER ===== */
#nt3 .footer-banner {
  background: var(--black);
  color: var(--white);
  padding: 60px 44px 56px;
}
#nt3 .fb-en {
  font-family: var(--en);
  font-size: clamp(38px, 5.5vw, 64px);
  letter-spacing: 0.015em;
  line-height: 1.0;
}
#nt3 .fb-date {
  font-family: var(--en);
  font-size: clamp(24px, 3.5vw, 38px);
  letter-spacing: 0.03em;
  margin-top: 4px;
}
#nt3 .fb-date span {
  font-size: 0.55em;
  opacity: 0.6;
  margin-left: 10px;
}
#nt3 .fb-venue {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  margin-top: 6px;
}
#nt3 .fb-copy {
  font-size: 11px;
  color: rgba(255,255,255,0.3);
  line-height: 2;
  margin-top: 20px;
}

/* ===== MODAL ===== */
#nt3-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
#nt3-modal.is-open { display: flex; }
#nt3-modal .m-box {
  background: var(--white);
  max-width: 520px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  position: relative;
}
#nt3-modal .m-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 20px;
  color: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}
#nt3-modal .m-photo {
  width: 100%;
  height: 260px;
  background: var(--gray-l);
  object-fit: cover;
  filter: grayscale(100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray);
  font-size: 12px;
}
#nt3-modal .m-body { padding: 28px 32px 38px; }
#nt3-modal .m-role {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 6px;
}
#nt3-modal .m-name {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 3px;
}
#nt3-modal .m-en {
  font-family: var(--en);
  font-size: 15px;
  color: var(--gray);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}
#nt3-modal .m-desc {
  font-size: 12.5px;
  color: #444;
  line-height: 2.0;
}
#nt3-modal .m-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
}
#nt3-modal .m-tag {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  border: 1px solid var(--gray-m);
}

/* ===== RESPONSIVE ===== */

@media (max-width: 1200px) {
	.right-content{display: inherit;    margin:2% 100px 2% 2%;}
.left-text{display:none;}
	.nt-main {width:100%;max-width: inherit;}	
	.hero-info-time span {font-size:0.7em;}
.hero-info-time { font-size:2em;}

}
@media (max-width: 900px) {
  #nt3 .nt-wrap { grid-template-columns: 160px 1fr 0px; }
	#nt3 .col-r { display: none; }
	.layout-budy,.right-content{display:inherit;margin:4% 2%;}

	
.tt-trigger {
    gap: 0;
    flex-direction: column;
}
.tt-body {
 padding: 0; 
}
	.tt-name{
		font-size:1.2em;
	}
.footer-copyright,footer{
    margin-right: 0;
}
}
@media (max-width: 620px) {
  #nt3 .nt-wrap { display: block; }
  #nt3 .col-l { height: auto; }
  #nt3 .col-l-inner { position: relative; height: auto; min-height: 52vw; }
  #nt3 .l-copy { writing-mode: horizontal-tb; font-size: 13px; padding: 16px 0; }
  #nt3 .sec { padding: 40px 20px; }
  #nt3 .hero-body { padding: 28px 20px 36px; }
  #nt3 .hero-title { font-size: 30px; }
  #nt3 .sec-hd-en { font-size: 38px; }
  #nt3 .sp-wrap { grid-template-columns: 1fr; }
  #nt3 .sp-grid { grid-template-columns: repeat(3, 1fr); }
  #nt3 .ex-grid { grid-template-columns: repeat(3, 1fr); }
  #nt3 .news-item { grid-template-columns: 1fr; gap: 8px; }
  #nt3 .footer-banner { padding: 44px 20px; }
}