/* ============================================
   GIL Summit 2026 - Stylesheet
   ============================================ */

:root {
  /* ===== Color Palette（画像から採寸） ===== */
  --color-bg-navy: #ebf4ff;           /* ベース背景ネイビー */
  --color-bg-navy-deep: #0a0e30;      /* やや深いネイビー（グラデ用） */
  --color-accent-green: #FFFF00;      /* 見出しアクセント（ミントグリーン） */
  --color-accent-midashi: #098bde;  
  --color-accent-blue: #19668B;       /* ボタングラデ始点 */
  --color-accent-teal: #2EB8BA;       /* ボタングラデ終点 */
  --color-white: #FFFFFF;
  --color-black: #2c363c;
  --color-nav-text: #2c363c;

  

  /* ===== Layout ===== */
  --content-max-width: 1200px;
  --header-height: 88px;

  /* ===== Font ===== */
  --font-en: Georgia, "Times New Roman", serif;
  --font-jp: "Noto Sans JP", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-jp);
  background: var(--color-bg-navy);
  color: var(--color-black);
  font-size: 18px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

img { max-width: 100%; display: block; }

/* ============================================
   LOADING OVERLAY（初回ロード時のみ）
   ============================================ */
.loading-overlay {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  background: var(--color-white);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
.loading-overlay.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-logo {
  width: clamp(260px, 30vw, 420px);
  height: auto;
  overflow: visible;
}
.loading-logo path {
  fill: none;
  stroke: var(--color-accent-midashi);
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.loading-logo path.filled {
  fill: var(--color-accent-midashi);
  stroke: none;
}

/* ============================================
   HEADER（ロゴ + ナビゲーション）
   ============================================ */
header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 250;
  height: var(--header-height);
  display: flex;
  align-items: center;
}

/* スクロールでメインビジュアルを通過した後、fixed化するクラス */
header.is-fixed {
  position: fixed;
  background: rgba(18, 24, 74, 0.92);
  backdrop-filter: blur(6px);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
  animation: headerSlideDown 0.4s ease-out;
}

@keyframes headerSlideDown {
  from { transform: translateY(-100%); }
  to   { transform: translateY(0); }
}

.header-inner {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* h1ロゴ（FROST & SULLIVAN） */
header h1 {
  font-size: clamp(14px, 1.1vw, 18px);
  font-weight: 400;
  letter-spacing: 0.15em;
  line-height: 1;
}
header h1 img {
  height: clamp(16px, 1.4vw, 22px);
  width: auto;
}

/* ナビゲーション */
header nav ul {
  display: flex;
  gap: clamp(16px, 2vw, 32px);
}
header nav a {
  font-size: clamp(12px, 0.95vw, 15px);
  font-weight: 700;
  color: var(--color-white);
  white-space: nowrap;
  transition: opacity 0.2s ease;
}
header nav a:hover {
  opacity: 0.7;
}

/* ============================================
   HAMBURGER MENU（768px以下）/ 基本スタイル
   ============================================ */
.hamburger {
  display: none; /* PC/タブレットでは非表示。768px以下のmedia queryで表示に切替 */
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 200;
  position: relative;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform 0.35s ease, opacity 0.25s ease;
}
/* ×に変形 */
.hamburger.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.hamburger.is-open span:nth-child(2) {
  opacity: 0;
}
.hamburger.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* フルスクリーンオーバーレイ */
.nav-overlay {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  background: var(--color-bg-navy-deep);
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}
.nav-overlay.is-open {
  opacity: 1;
  visibility: visible;
}
.nav-overlay ul {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}
.nav-overlay a {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.05em;
}

/* オーバーレイ表示中は背景スクロールを止める */
body.nav-open {
  overflow: hidden;
}

/* ============================================
   FIRST VIEW（メインビジュアル）
   section.fv
   ============================================ */
.fv {
  position: relative;
  width: 100%;
  min-height: 800px;
  background: url(../images/flv_bg.png) no-repeat right bottom #12184A;
  background-size: cover;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.fv-inner {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: var(--header-height) 24px 0;
  position: relative;
  z-index: 2;
}

/* イベントロゴ（GIL）エリア：静止画表示、アニメーションなし */
.fv-event-logo {
  margin-bottom: clamp(20px, 3vw, 32px);
}
.fv-event-logo img {
  width: clamp(280px, 32vw, 420px);
  height: auto;
}

/* キャッチコピー */
.fv-headline {
  font-size: clamp(28px, 3.2vw, 44px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-accent-green);
  background:linear-gradient(#19fff4,#aeffae);
	-webkit-background-clip:text;
	-webkit-text-fill-color: transparent;
  margin-bottom: clamp(16px, 2vw, 24px);
}

.fv-subhead {
  font-size: clamp(18px, 1.7vw, 24px);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: clamp(12px, 1.5vw, 18px);
}

.fv-description {
  font-size: clamp(13px, 1vw, 15px);
  line-height: 1.8;
  color: var(--color-white);
  margin-bottom: clamp(20px, 2.5vw, 32px);
}

.fv-meta {
  font-size: clamp(14px, 1.15vw, 17px);
  font-weight: 700;
  line-height: 1.9;
  margin-bottom: clamp(24px, 3vw, 36px);
  color: var(--color-white);
}
.fv-meta .en {
  font-family: var(--font-en);
}

/* CTAボタン */
.fv-cta {
  display: inline-block;
  padding: clamp(14px, 1.4vw, 18px) clamp(48px, 6vw, 80px);
  background: linear-gradient(90deg, #3551a4 0%, #2c8ec4 50%, #31cdb0 100%);
  color: var(--color-white);
  font-size: clamp(14px, 1.1vw, 17px);
  font-weight: 700;
  letter-spacing: 0.05em;
  border-radius: 2px;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.fv-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ============================================
   EVENT OVERVIEW（イベント概要）
   section.overview
   ============================================ */
.overview {
  width: 100%;
  background-color: var(--color-bg-navy);
  padding: clamp(60px, 8vw, 100px) 0;
}

.overview-inner {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* セクション共通見出し（en-label + h2 + 右側説明文） */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: clamp(32px, 4vw, 48px);
}
.section-head-label .en-label {
  font-family: var(--font-en);
  font-size: clamp(14px, 1.1vw, 17px);
  font-weight: 700;
  color: var(--color-accent-midashi);
  margin-bottom: 4px;
}
.section-head-label h2 {
  font-size: clamp(22px, 2vw, 28px);
  font-weight: 700;
  color: var(--color-accent-midashi);
}
.bg_blue .section-head-desc,.bg_blue .section-head-label .en-label,.bg_blue .section-head-label h2{color: #fff;}


.section-head-desc {
  max-width: 560px;
  font-size: clamp(13px, 1vw, 15px);
  line-height: 1.8;
  color: var(--color-nav-text);
}

/* テーマカード */
.theme-card {
  background: rgba(255, 255, 255, 1.0);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  padding: clamp(28px, 4vw, 48px);
  margin-bottom: clamp(32px, 4vw, 48px);
}
.theme-label {
  font-size: clamp(14px, 1.1vw, 16px);
  font-weight: 700;
  margin-bottom: 12px;
}
.theme-title {
  font-size: clamp(20px, 2.2vw, 30px);
  font-weight: 700;
  color: var(--color-accent-midashi);
  line-height: 1.5;
  margin-bottom: clamp(20px, 3vw, 32px);
}
.theme-body {
  display: flex;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}
.theme-text {
  flex: 1 1 50%;
  min-width: 0;
  font-size: clamp(13px, 1vw, 15px);
}
.theme-text p {
  line-height: 1.9;
  color: var(--color-nav-text);
}
.theme-text p + p {
  margin-top: 1.2em;
}
.theme-image {
  flex: 1 1 42%;
}
.theme-image img {
  width: 100%;
  height: auto;
  border-radius: 2px;
}

/* ギャラリー（3グリッド） */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(16px, 2vw, 24px);
  margin-bottom: clamp(32px, 4vw, 48px);
}
.gallery-item {
  background: rgba(255, 255, 255, 1.0);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  overflow: hidden;
  padding: 20px;
}
.gallery-item img {
  width: 100%;
  max-width: 100%;
  display: block;
}
.gallery-caption {
  padding: 16px 0px;
  line-height: 1.7;
  color: var(--color-nav-text);
  font-size: clamp(13px, 1vw, 15px);
}

/* 参加対象カード */
.audience-card {
  position: relative;
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
  padding: clamp(36px, 5vw, 56px) 24px;
  text-align: center;
}
.audience-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  z-index: 0;
}
.audience-content {
  position: relative;
  z-index: 1;
}
.audience-title {
  font-size: clamp(16px, 1.4vw, 20px);
  font-weight: 700;
  margin-bottom: clamp(20px, 2.5vw, 28px);
}
.audience-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(16px, 2vw, 10px);
}
.audience-tags li {
  font-size: clamp(13px, 1vw, 15px);
  font-weight: 700;
  position: relative;
  padding: 0.5em 1em;
  background: #dfeffd;
  border-radius: 6px;
}
.audience-tags li:last-child::after {
  content: "";
}

/* ============================================
   PROGRAM（プログラム）
   section.program
   ============================================ */
.program {
  width: 100%;
  background-color: var(--color-bg-navy-deep);
  padding: clamp(60px, 8vw, 100px) 0;
}

.program-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* アイコン5グリッド */
.program-icons {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: clamp(12px, 1.5vw, 20px);
  margin-bottom: clamp(32px, 4vw, 48px);
}
.program-icons li {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  padding: clamp(18px, 2vw, 26px) 12px;
  text-align: center;
}
.program-icon {
  margin: 0 auto 20px;
}
.program-icon img {
  display: block;
  margin: 0 auto;
}
.program-icon-label {
  font-size: clamp(13px, 1vw, 15px);
  font-weight: 700;
  color: var(--color-accent-midashi);
  line-height: 1.6;
}

/* 注目セッション 大枠カード */
.session-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 4px;
  padding: clamp(28px, 4vw, 48px);
}
.session-label {
  font-size: clamp(14px, 1.1vw, 16px);
  font-weight: 700;
  color: var(--color-nav-text);
  margin-bottom: 12px;
}
.session-intro {
  font-size: clamp(15px, 1.3vw, 19px);
  font-weight: 700;
  line-height: 1.8;
  color: var(--color-accent-midashi);
  margin-bottom: clamp(28px, 4vw, 40px);
}

/* 01〜07 番号付きリスト */
.session-list {
  list-style: none;
}
.session-item {
  display: flex;
  align-items: stretch;
  background: #dfeffd;
  border-radius: 2px;
  margin-bottom: clamp(16px, 2vw, 24px);
  overflow: hidden;
}
.session-number {
  flex: 0 0 clamp(70px, 8vw, 110px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-en);
  font-size: clamp(28px, 3.2vw, 44px);
  font-weight: 700;
  color: var(--color-accent-midashi);
  background: rgba(255, 255, 255, 0.06);
  position: relative;
  /* リボン風の台形装飾（下部を斜めにカット） */
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 88%, 0 100%);
}
.session-content {
  flex: 1 1 auto;
  padding: clamp(18px, 2.2vw, 26px) clamp(20px, 2.5vw, 32px);
}
.session-title {
  font-size: clamp(16px, 1.4vw, 20px);
  font-weight: 700;
  margin-bottom: 8px;
}
.session-text {
  font-size: clamp(13px, 1vw, 15px);
  line-height: 1.8;
  color: var(--color-nav-text);
}
.session-text + .session-text {
  margin-top: 2px;
}

/* ============================================
   COMPANIES（過去参加企業例）
   section.companies
   ============================================ */
.companies {
  width: 100%;
  background-color: var(--color-bg-navy);
  padding: clamp(60px, 8vw, 100px) 0;
}

.companies-inner {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 業種カード（7枚：4＋3中央寄せ、flexboxで実装） */
.company-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: clamp(32px, 4vw, 48px);
}
.company-card {
  flex: 0 0 23.5%;
  margin: 0 0.75% clamp(20px, 2.5vw, 32px);
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  overflow: hidden;
}
.company-card-image img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}
.company-card-title {
  font-size: clamp(15px, 1.2vw, 18px);
  font-weight: 700;
  padding: clamp(14px, 1.5vw, 18px) clamp(14px, 1.5vw, 18px) 8px;
}
.company-card-text {
  font-size: clamp(12px, 0.9vw, 13px);
  line-height: 1.8;
  color: var(--color-nav-text);
  padding: 0 clamp(14px, 1.5vw, 18px) clamp(16px, 1.8vw, 20px);
}

/* 注記文 */
.companies-note {
  text-align: center;
  font-size: clamp(12px, 0.95vw, 14px);
  line-height: 1.9;
  color: var(--color-nav-text);
}

/* ============================================
   APPLY（参加申込CTA）
   section.apply
   ============================================ */
.apply {
  width: 100%;
}

/* 上部：CTAバナー（1枚画像、クリックエリア最大化のためaタグ全体がリンク） */
.apply-banner {
  display: block;
  width: 100%;
  line-height: 0; /* img下の余白を消す */
  transition: opacity 0.2s ease;
}
.apply-banner:hover {
  opacity: 0.92;
}
.apply-banner img {
  width: 100%;
  height: auto;
  display: block;
}

/* 下部：説明コンテンツ */
.apply-detail {
  position: relative;
  width: 100%;
  background-image: linear-gradient(90deg, #00beff 0%, #0098ec 35%, #007bd7 55%, #0062c4 75%, #004bb1 100%);
  padding: clamp(48px, 6vw, 72px) 0;
}
.apply-detail:after{
  position: absolute;
  content: '';
  left: 0;
  top: 0;
  background: url(../images/bg_01.png) repeat;
  background-position: 50% 10px;
  background-size: 40px 40px;
  width: 100%;
  height: 100%;
  z-index: 1;
}
.apply-detail-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}
.apply-detail-organized {
  font-family: var(--font-en);
  font-size: clamp(11px, 0.9vw, 13px);
  letter-spacing: 0.15em;
  color: var(--color-white);
  margin-bottom: 8px;
}
.apply-detail-organizer {
  font-family: var(--font-en);
  font-size: clamp(20px, 2.2vw, 28px);
  letter-spacing: 0.2em;
  color: var(--color-white);
  margin-bottom: clamp(24px, 3vw, 36px);
}
.apply-detail-headline {
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 700;
  background: linear-gradient(#19fff4, #aeffae);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: clamp(16px, 2vw, 24px);
}
.apply-detail-desc {
  font-size: clamp(13px, 1.05vw, 16px);
  line-height: 1.9;
  color: var(--color-white);
  margin-bottom: clamp(32px, 4vw, 48px);
}

/* アイコン部分：.program-iconsを流用し、このセクション用に余白等を上書き */
.apply-detail-icons.program-icons {
  margin-bottom: 0;
}
.apply-detail-icons .program-icons-li,
.apply-detail-icons li {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* お問い合わせボタン2つ：2分割横並び、480px以下で1列縦積み */
.apply-contact-btns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(12px, 1.5vw, 20px);
  margin-top: clamp(24px, 3vw, 36px);
  margin-bottom:clamp(24px, 3vw, 48px);
}
.apply-contact-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: clamp(18px, 2vw, 24px) clamp(16px, 2vw, 24px);
  background: linear-gradient(90deg, #0a0e30 0%, #12184A 50%, #1a2260 100%);
  border-radius: 2px;
  text-align: center;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.apply-contact-btn.phone{
  background: linear-gradient(90deg, #1a1a2e 0%, #2d2d44 50%, #3d3d5c 100%);
}
.apply-contact-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}
.apply-contact-btn-label {
  font-size: clamp(13px, 1.1vw, 16px);
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.04em;
}
.apply-contact-btn-sub {
  font-family: var(--font-en);
  font-size: clamp(12px, 1vw, 14px);
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.03em;
}
p.cv-p a{text-decoration: underline;}

/* ============================================
   VENUE（会場・ネットワーキング）
   section.venue
   ============================================ */
.venue {
  width: 100%;
  background-color: var(--color-bg-navy-deep);
  padding: clamp(60px, 8vw, 100px) 0;
}
.venue-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Main Stage / Sub Stage 2カード（既存2グリッドルール準用） */
.venue-stage-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(20px, 2.5vw, 32px);
  margin-bottom: clamp(40px, 5vw, 56px);
}
.venue-stage-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 4px;
  padding: clamp(28px, 3.5vw, 40px);
  text-align: center;
}
.venue-stage-en {
  font-family: var(--font-en);
  font-size: clamp(13px, 1vw, 15px);
  letter-spacing: 0.1em;
  color: var(--color-accent-midashi);
  margin-bottom: 6px;
}
.venue-stage-title {
  font-size: clamp(20px, 1.9vw, 26px);
  font-weight: 700;
  color: var(--color-accent-midashi);
  margin-bottom: clamp(20px, 2.5vw, 28px);
}
.venue-stage-image img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 2px;
  margin-bottom: clamp(20px, 2.5vw, 28px);
}
.venue-stage-text {
  text-align: left;
  font-size: clamp(13px, 1vw, 15px);
  line-height: 1.9;
  color: var(--color-nav-text);
}

/* Access：マップ＋所在地情報 */
.venue-access-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 4px;
  padding: clamp(28px, 3.5vw, 48px);
  text-align: center;
}
.venue-access-en {
  font-family: var(--font-en);
  font-size: clamp(13px, 1vw, 15px);
  letter-spacing: 0.1em;
  color: var(--color-white);
  margin-bottom: 6px;
}
.venue-access-title {
  font-size: clamp(22px, 2.1vw, 30px);
  font-weight: 700;
  color: var(--color-accent-midashi);
  margin-bottom: clamp(24px, 3vw, 32px);
}
.venue-map {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: clamp(24px, 3vw, 32px);
}
.venue-map iframe {
  width: 100%;
  height: 100%;
  display: block;
}
.venue-access-info {
  text-align: left;
  max-width: 760px;
  margin: 0 auto;
}
.venue-access-heading {
  font-size: clamp(14px, 1.1vw, 16px);
  font-weight: 700;
  color: var(--color-accent-midashi);
  margin-bottom: 8px;
}
.venue-access-heading:not(:first-child) {
  margin-top: clamp(20px, 2.5vw, 28px);
}
.venue-access-text {
  font-size: clamp(13px, 1vw, 15px);
  line-height: 1.9;
  color: var(--color-nav-text);
}
.venue-access-note {
  margin-top: clamp(20px, 2.5vw, 28px);
  font-size: clamp(12px, 0.9vw, 13px);
  line-height: 1.9;
  color: var(--color-nav-text);
  opacity: 0.85;
}

/* ============================================
   SPONSOR（スポンサーシップのご紹介）
   section.sponsor
   ============================================ */
.sponsor {
  width: 100%;
  background-color: var(--color-bg-navy);
  padding: clamp(60px, 8vw, 100px) 0;
}
.sponsor-inner {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Our Planning：説明＋写真 */
.sponsor-planning-card {
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  padding: clamp(28px, 4vw, 48px);
  margin-bottom: clamp(32px, 4vw, 48px);
}
.sponsor-planning-en {
  font-family: var(--font-en);
  font-size: clamp(13px, 1vw, 15px);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.sponsor-planning-title {
  font-size: clamp(22px, 2.2vw, 30px);
  font-weight: 700;
  color: var(--color-accent-midashi);
  margin-bottom: clamp(24px, 3vw, 32px);
}
.sponsor-planning-body {
  display: flex;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}
.sponsor-planning-text {
  flex: 1 1 55%;
  min-width: 0;
}
.sponsor-planning-text p {
  font-size: clamp(13px, 1vw, 15px);
  line-height: 1.9;
  color: var(--color-nav-text);
}
.sponsor-planning-text p + p {
  margin-top: 1.2em;
}
.sponsor-planning-image {
  flex: 1 1 38%;
}
.sponsor-planning-image img {
  width: 100%;
  height: auto;
  border-radius: 2px;
}

/* プランカード4枚（4グリッドルール準用） */
.sponsor-plan-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(16px, 2vw, 24px);
}
.sponsor-plan-card {
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  padding: 20px;
}
.sponsor-plan-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(26px, 2vw, 32px);
  height: clamp(26px, 2vw, 32px);
  border-radius: 50%;
  background: var(--color-accent-green);
  color: var(--color-bg-navy);
  font-family: var(--font-en);
  font-size: clamp(13px, 1vw, 15px);
  font-weight: 700;
  margin-bottom: 12px;
}
.sponsor-plan-name {
  font-size: clamp(14px, 1.15vw, 17px);
  font-weight: 700;
  color: var(--color-accent-midashi);
  margin-bottom: 10px;
  text-align: center;
}
.sponsor-plan-image img {
  width: 100%;
  max-width: 100%;
  border-radius: 2px;
  margin-bottom: clamp(14px, 1.6vw, 18px);
}
.sponsor-plan-features li {
  font-size: clamp(12px, 0.9vw, 13px);
  line-height: 1.9;
  color: var(--color-nav-text);
}

/* ============================================
   FAQ（よくあるご質問）
   section.faq
   ============================================ */
.faq {
  width: 100%;
  background-color: var(--color-bg-navy-deep);
  padding: clamp(60px, 8vw, 100px) 0;
}
.faq-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2vw, 24px);
}
.faq-item {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 4px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: clamp(20px, 2.5vw, 28px) clamp(24px, 3vw, 36px);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-jp);
  font-size: clamp(15px, 1.3vw, 19px);
  font-weight: 700;
  color: var(--color-accent-midashi);
}

/* 開閉アイコン（+ / −）：2本の線をCSSで描画し、縦線の表示/非表示で+/−を切り替え */
.faq-icon {
  position: relative;
  flex: 0 0 auto;
  width: clamp(20px, 1.8vw, 24px);
  height: clamp(20px, 1.8vw, 24px);
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--color-accent-midashi);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.faq-icon::before {
  /* 横線（常に表示） */
  width: 100%;
  height: 2px;
  transform: translate(-50%, -50%);
}
.faq-icon::after {
  /* 縦線（開いている時は消えて「−」になる） */
  width: 2px;
  height: 100%;
  transform: translate(-50%, -50%);
}
.faq-item.is-open .faq-icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
}
.faq-answer > p {
  overflow: hidden;
  min-height: 0;
  font-size: clamp(13px, 1.05vw, 16px);
  line-height: 1.9;
  color: var(--color-nav-text);
}
.faq-item .faq-answer {
  padding: 0 clamp(24px, 3vw, 36px);
}
.faq-item.is-open .faq-answer {
  grid-template-rows: 1fr;
  padding-bottom: clamp(20px, 2.5vw, 28px);
}
.faq-item .faq-answer a{text-decoration: underline;}

/* ============================================
   FOOTER（フッター）
   footer
   ============================================ */
.site-footer {
  width: 100%;
  background-color: #181818;
}

/* Back to Top */
.footer-totop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: clamp(28px, 4vw, 40px) 24px;
  text-align: center;
  transition: opacity 0.2s ease;
}
.footer-totop:hover {
  opacity: 0.7;
}
.footer-totop-icon {
  font-size: 20px;
  line-height: 1;
  color: var(--color-white);
}
.footer-totop-label {
  font-family: var(--font-en);
  font-size: clamp(13px, 1vw, 15px);
  letter-spacing: 0.05em;
  color: var(--color-white);
}

.footer-main {
  background-color: #0d0d0d;
  padding: clamp(40px, 5vw, 64px) 0 clamp(24px, 3vw, 32px);
}
.footer-main-inner {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  gap: clamp(32px, 5vw, 64px);
}

/* 左カラム */
.footer-left {
  flex: 1 1 55%;
  min-width: 0;
}
.footer-logo-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: clamp(20px, 2.5vw, 28px);
}
.footer-event-logo img {
  width: clamp(220px, 22vw, 320px);
  height: auto;
}
.footer-sns {
  display: flex;
  gap: 12px;
  flex: 0 0 auto;
}
.footer-sns-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  transition: background 0.2s ease;
}
.footer-sns-icon:hover {
  background: rgba(255, 255, 255, 0.18);
}
.footer-sns-icon svg {
  width: 16px;
  height: 16px;
}

.footer-headline {
  font-size: clamp(15px, 1.3vw, 18px);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: clamp(16px, 2vw, 22px);
}

.footer-event-info {
  margin-bottom: clamp(24px, 3vw, 32px);
}
.footer-event-row {
  display: flex;
  gap: clamp(16px, 2vw, 24px);
  padding: 6px 0;
  font-size: clamp(12px, 0.95vw, 14px);
  line-height: 1.8;
}
.footer-event-row dt {
  flex: 0 0 clamp(70px, 6vw, 90px);
  color: var(--color-white);
  font-weight: 700;
}
.footer-event-row dd {
  color: var(--color-white);
}
.footer-event-row dd .en {
  font-family: var(--font-en);
}

.footer-organized {
  font-family: var(--font-en);
  font-size: clamp(11px, 0.85vw, 13px);
  letter-spacing: 0.1em;
  color: var(--color-white);
  margin-bottom: 6px;
}
.footer-organizer {
  font-family: var(--font-en);
  font-size: clamp(20px, 2vw, 26px);
  letter-spacing: 0.15em;
  color: var(--color-white);
  margin-bottom: clamp(20px, 2.5vw, 28px);
}

.footer-copyright {
  font-size: clamp(11px, 0.85vw, 13px);
  color: var(--color-white);
}

/* 右カラム：フッターメニュー */
.footer-nav {
  flex: 0 0 auto;
  width: clamp(280px, 32vw, 420px);
}
.footer-nav ul {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-nav li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: clamp(14px, 1.6vw, 18px) 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: clamp(13px, 1vw, 15px);
  color: var(--color-white);
  transition: opacity 0.2s ease;
}
.footer-nav li a:hover {
  opacity: 0.7;
}
.footer-nav-arrow {
  color: var(--color-nav-text);
  font-size: 16px;
}

.footer-privacy {
  width: 100%;
  max-width: var(--content-max-width);
  margin: clamp(20px, 2.5vw, 28px) auto 0;
  padding: 0 24px;
  text-align: right;
  font-size: clamp(11px, 0.85vw, 13px);
}
.footer-privacy a {
  color: var(--color-white);
  transition: opacity 0.2s ease;
}
.footer-privacy a:hover {
  opacity: 0.7;
}

/* ============================================
   PRIVACY POLICY MODAL（プライバシーポリシー モーダル）
   ============================================ */
.privacy-modal {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(20px, 4vw, 40px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.privacy-modal.is-open {
  opacity: 1;
  visibility: visible;
}

.privacy-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5, 7, 24, 0.75);
  backdrop-filter: blur(2px);
}

.privacy-modal-panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 760px;
  max-height: 80vh;
  background: var(--color-bg-navy);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  overflow: hidden;
  transform: translateY(12px);
  transition: transform 0.3s ease;
}
.privacy-modal.is-open .privacy-modal-panel {
  transform: translateY(0);
}

.privacy-modal-body {
  max-height: 80vh;
  overflow-y: auto;
  padding: clamp(28px, 4vw, 44px);
  display: flex;
  flex-direction: column;
}

.privacy-modal-title {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 700;
  color: var(--color-accent-midashi);
  margin-bottom: clamp(20px, 2.5vw, 28px);
}

.privacy-modal-text p {
  font-size: clamp(13px, 1vw, 15px);
  line-height: 1.9;
  color: var(--color-nav-text);
}
.privacy-modal-text p + p {
  margin-top: 1.4em;
}

.privacy-modal-close {
  align-self: center;
  margin-top: clamp(28px, 4vw, 40px);
  padding: 12px 40px;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 2px;
  color: var(--color-white);
  font-family: var(--font-jp);
  font-size: clamp(13px, 1vw, 15px);
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease, opacity 0.2s ease;
}
.privacy-modal-close:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* モーダル表示中は背景スクロールを止める */
body.privacy-modal-open {
  overflow: hidden;
}

/* ============================================
   Responsive
   ============================================ */


@media (max-width: 1400px) {
  .fv{min-height: inherit; .fv-inner{padding: 128px 24px 88px;}}
  .inner-class{max-width: 1000px;}
}
@media (max-width: 1200px) {
  .inner-class{padding: 0 40px;}
  .bg_white:before{content: none!important;}
}

@media (max-width: 1024px) {
  .header-inner { padding: 0 20px; }
  header nav ul { gap: 14px; }
}
@media (max-width: 920px) {
  .theme-card,.audience-card,.venue-stage-card,.venue-access-card,.sponsor-planning-card{padding: 20px;}
  .gallery-grid,.sponsor-plan-grid{grid-template-columns: repeat(2, 1fr);}
  .section-head-desc{max-width: 100%;}
}

@media (max-width: 768px) {
  :root { --header-height: 64px; }
  header h1 img{height: auto;}
  header nav { display: none; } /* PC/タブレット用ナビは768px以下で非表示 */
  .hamburger { display: flex; } /* ハンバーガーアイコンを表示（後勝ちで有効化） */
  .fv { min-height: 640px; }
  .fv-inner { padding-top: calc(var(--header-height) + 16px); padding-left: 48px; padding-right: 48px; }
  .fv-event-logo img {width: 80%;}
  .inner-class{padding: 0 60px;}
  .nav-overlay a{padding: 0.5em 2.5em 1em; border-bottom: 1px solid #eaeaea;}

  /* イベント概要：768px以下 */
  .section-head { flex-direction: column; }
  /* gallery-grid（3グリッド）は768pxまでそのまま */

  /* テーマカード：768px以下も横並び維持、画像列30%・テキスト列を広く */
  .theme-image {
    flex: 0 0 30%;
  }
  .theme-text {
    flex: 1 1 auto;
  }

  /* プログラム：アイコン5グリッド→3グリッド＋中央寄せ（1行目3個・2行目2個中央） */
  .program-icons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0; /* marginで余白制御するためgapは使わない */
  }
  .program-icons li {
    flex: 0 0 31%;
    margin: 0 1.16% clamp(12px, 1.5vw, 20px);
  }

  /* 参加企業：業種カード7枚 4+3→2グリッド（4グリッドルール準用） */
  .company-card {
    flex: 0 0 47%;
    margin: 0 1.5% clamp(20px, 2.5vw, 32px);
  }

  /* スポンサー：Our Planningカード、テーマカードと同ルール（768px以下も横並び維持・画像30%） */
  .sponsor-planning-image {
    flex: 0 0 30%;
  }
  .sponsor-planning-text {
    flex: 1 1 auto;
  }

  /* スポンサー：プランカード4枚→2グリッド（4グリッドルール準用） */
  .sponsor-plan-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* フッター：左右カラムを縦積みに変更（ロゴ・開催概要→メニューの順） */
  .footer-main-inner {
    flex-direction: column;
  }
  .footer-nav {
    width: 100%;
  }
  .footer-event-logo img{max-width: 70%; width: 70%;}
}
@media (max-width: 640px) {
  .inner-class{padding: 0 20px;}
}

@media (max-width: 480px) {
  .apply-detail-desc br,.companies-note br{display: none;}
  .apply-detail-desc,.companies-note,.sponsor-detail-desc{text-align: left!important;}
  .fv{min-height: inherit;}
  .fv-inner { padding-left: 20px; padding-right: 20px; }
  .fv-cta{display: block; text-align: center;}
  .bg_white,.bg_blue{padding: 40px 0;}
  .theme-card, .audience-card, .venue-stage-card, .venue-access-card, .sponsor-planning-card,.session-card{padding: 20px 10px;}
  .gallery-item,.company-card-title{padding: 10px;}
  .program-icons li,.sponsor-plan-card{padding: 10px;}
  .company-card-text{padding: 0 10px 10px}
  .venue-stage-grid{grid-template-columns: repeat(1, 1fr);}
  header h1{padding-right: 30px;}

  /* イベント概要：480px以下、4グリッド→2グリッド */
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .audience-tags {
  }
  .audience-tags li {
  }
  .audience-tags li::after {
    content: "";
  }

  /* テーマカード：480px以下のみ1列縦積みに変更、画像→テキストの順 */
  .theme-body {
    flex-direction: column;
    align-items: stretch;
    gap: clamp(20px, 4vw, 32px);
  }
  .theme-image {
    order: 1; /* 画像を先に表示 */
    flex: none;
    width: 100%;
  }
  .theme-text {
    order: 2; /* テキストを後に表示 */
    width: 100%;
  }

  /* プログラム：アイコン5グリッド→480px以下も3+2中央寄せを維持（768pxと同ルール） */
  .program-icons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0;
  }
  .program-icons li {
    flex: 0 0 31%;
    margin: 0 1.16% clamp(12px, 3vw, 20px);
  }

  /* セッションカード：480px以下も画像通り横並びを維持（縦積みにしない） */

  /* スポンサー：Our Planningカード、480px以下のみ1列縦積み（テーマカードと同ルール） */
  .sponsor-planning-body {
    flex-direction: column;
    align-items: stretch;
    gap: clamp(20px, 4vw, 32px);
  }
  .sponsor-planning-image {
    order: 1;
    flex: none;
    width: 100%;
  }
  .sponsor-planning-text {
    order: 2;
    width: 100%;
  }

  /* CTAお問い合わせボタン：480px以下で1列縦積み */
  .apply-contact-btns {
    grid-template-columns: 1fr;
  }
  
}

/* スクロール確認用のダミーセクション */
.dummy-section {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 120px 24px;
  color: var(--color-nav-text);
  font-size: 16px;
  line-height: 2;
}


/*bg_blue*/
.bg_blue{background-image: linear-gradient(90deg, #00beff 0%, #0098ec 35%, #007bd7 55%, #0062c4 75%, #004bb1 100%); position: relative;}
.bg_blue:after{position: absolute; content: ''; width: 100%; height: 100%; background-image: url(../images/bg_01.png);
  background-repeat: repeat;
  background-position: 50% 10px;
  background-size: 40px 40px;
  top: 0; left: 0;
  z-index: 0;
}

/*bg_white*/
.bg_white{position: relative;}
.bg_white:before{position: absolute; content: ''; width: 15%; height: 100%; background-image: url(../images/circle_bg_01.png);
  background-repeat: no-repeat;
  background-position: left top;
  background-size: 100% auto;
  top: 0; left: 0;
  z-index: 0;
  opacity: 0.45;
}
.bg_white:after{position: absolute; content: ''; width: 35%; height: 100%; background-image: url(../images/circle_bg_02.png);
  background-repeat: no-repeat;
  background-position: right bottom;
  background-size: 100% auto;
  bottom: 0; right: 0;
  z-index: 0;
  opacity: 0.7;
}
.overview-inner,.companies-inner,.sponsor-inner{position: relative; z-index: 1;}

.sponsor-detail-desc {
    font-size: clamp(13px, 1.05vw, 16px);
    line-height: 1.9;
    color: var(--color-nav-text);
    margin-top: 48px;
    margin-bottom: clamp(32px, 4vw, 48px);
    text-align: center;
}