/* ============================================
   Virtual Dice Party 2026 - Main Stylesheet
   ============================================ */

:root {
  /* ベース：プリパラ風のペールピンク×ラベンダーの夢かわパステル */
  --bg-base: #fcdce8;
  --bg-panel: #f3d3f0;
  --bg-highlight: #e6c5ee;

  /* アクセント：ロゴ＋ポスターから抽出した多色ネオン */
  --color-blue: #3da7ff;     /* Virtual */
  --color-red: #ff3e4a;      /* Dice */
  --color-green: #3fc873;    /* Party */
  --color-orange: #ff8c2a;   /* 2026 */
  --color-pink: #ff3aa8;     /* ポスター */
  --color-turquoise: #3fd6c8;/* ポスター */
  --color-gold: #ffd23f;     /* 音符 */

  /* セマンティック（用途別エイリアス） */
  --color-hot: var(--color-orange);
  --color-hot2: var(--color-red);
  --color-chill: var(--color-turquoise);
  --color-chill2: var(--color-blue);
  --color-pop: var(--color-pink);
  --color-accent: var(--color-gold);

  --text-main: #f5f3eb;
  --text-sub: #a8b4d8;
  --text-mute: #6e78a8;

  /* パステル背景の上に直接置くテキスト用：鮮やかなロイヤルブルー */
  --text-on-light: #0d4ea3;
  --text-on-light-sub: #2e6dc8;

  --border-steel: #2a3270;

  --font-display: 'Orbitron', sans-serif;
  --font-script: 'Pacifico', 'Caveat', cursive;
  --font-ui: 'Rajdhani', sans-serif;
  --font-jp: 'Noto Sans JP', sans-serif;

  --max-width: 1280px;
  --header-height: 88px;

  --shadow-blue: 0 0 12px rgba(61, 167, 255, 0.55), 0 0 28px rgba(61, 167, 255, 0.25);
  --shadow-orange: 0 0 12px rgba(255, 140, 42, 0.6), 0 0 28px rgba(255, 62, 74, 0.3);
  --shadow-pink: 0 0 12px rgba(255, 58, 168, 0.6), 0 0 28px rgba(255, 58, 168, 0.25);
  --shadow-turquoise: 0 0 12px rgba(63, 214, 200, 0.6), 0 0 28px rgba(63, 214, 200, 0.25);
  --shadow-gold: 0 0 10px rgba(255, 210, 63, 0.7), 0 0 22px rgba(255, 210, 63, 0.35);
}

html, body {
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font-jp);
  font-weight: 400;
  font-size: 16px;
  overflow-x: hidden;
  /* アンカーリンクで遷移時、固定ヘッダー分のオフセットを確保 + 滑らかにスクロール */
  scroll-padding-top: var(--header-height);
  scroll-behavior: smooth;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
  /* プリパラ風：ペールピンクをベースに、ラベンダーと白の柔らかいウォッシュ */
  background:
    radial-gradient(1300px 1100px at 88% 5%, rgba(220, 200, 245, 0.6), transparent 55%),
    radial-gradient(1300px 1100px at 12% 95%, rgba(220, 200, 245, 0.5), transparent 55%),
    radial-gradient(1000px 900px at 60% 30%, rgba(255, 255, 255, 0.5), transparent 55%),
    radial-gradient(1100px 900px at 30% 70%, rgba(255, 230, 240, 0.6), transparent 55%),
    radial-gradient(900px 800px at 100% 60%, rgba(255, 215, 230, 0.55), transparent 55%),
    var(--bg-base);
  background-attachment: fixed;
}

/* 微かな五線譜パターン（音楽テーマ） */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 100% 28px;
  background-position: 0 0;
  pointer-events: none;
  z-index: 0;
}

/* スキャンライン */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px,
    transparent 2px,
    rgba(0, 0, 0, 0.12) 2px,
    rgba(0, 0, 0, 0.12) 3px
  );
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: multiply;
}

main, header, footer {
  position: relative;
  z-index: 2;
}

/* ============================================
   Layout
   ============================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

main {
  flex: 1;
}

/* ============================================
   Header
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 100;
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: transparent;
  border-bottom: 1px solid transparent;
  pointer-events: none;
  z-index: -1;
  transition: background 0.3s ease, border-bottom-color 0.3s ease, backdrop-filter 0.3s ease;
}

.site-header.is-scrolled::before {
  background: rgba(13, 18, 64, 0.88);
  border-bottom-color: var(--border-steel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  height: clamp(32px, 3vw, 40px);
}

.site-header__logo img {
  height: 100%;
  width: auto;
  filter:
    drop-shadow(0 0 6px rgba(255, 140, 42, 0.35))
    drop-shadow(0 1px 4px rgba(0, 0, 0, 0.7));
  transition: filter 0.3s ease;
}

.site-header__logo:hover img {
  filter:
    drop-shadow(0 0 12px rgba(255, 140, 42, 0.7))
    drop-shadow(0 0 18px rgba(63, 214, 200, 0.45));
}

/* ロゴ画像がない時のテキスト代替 */
.site-header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  font-family: var(--font-ui);
  font-weight: 700;
  color: var(--text-main);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
}

.site-header__logo-text strong {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.04em;
  background: linear-gradient(90deg, var(--color-blue), var(--color-pink), var(--color-orange));
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 6px rgba(255, 140, 42, 0.3));
}

.site-header__logo-text span {
  font-size: 0.7rem;
  color: var(--text-sub);
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(2px, 0.5vw, 8px);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 0.3vw, 4px);
}

.site-nav__link {
  display: inline-block;
  padding: clamp(6px, 0.8vw, 8px) clamp(8px, 1vw, 14px);
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: clamp(0.78rem, 0.92vw, 0.92rem);
  letter-spacing: 0.04em;
  color: var(--text-main);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
  position: relative;
  transition: color 0.2s ease;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-pink));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s ease;
  border-radius: 2px;
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-gold);
  text-shadow: var(--shadow-gold);
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav__cta {
  margin-left: clamp(4px, 0.8vw, 12px);
  padding: clamp(7px, 0.9vw, 10px) clamp(12px, 1.4vw, 20px);
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: clamp(0.78rem, 0.9vw, 0.9rem);
  letter-spacing: 0.05em;
  color: #fff;
  background: linear-gradient(135deg, var(--color-orange), var(--color-pink));
  border-radius: 999px;
  box-shadow:
    0 4px 14px rgba(255, 58, 168, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.site-nav__cta:hover {
  transform: translateY(-2px);
  box-shadow:
    0 6px 22px rgba(255, 58, 168, 0.6),
    0 0 16px rgba(255, 140, 42, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  filter: brightness(1.08);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 8px;
  position: relative;
  z-index: 110;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-main);
  margin: 5px 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  margin-top: 0;
  padding: 80px 0 24px;
  /* sponsors（ピンク）の最下部の色から始めて、徐々に青へ。これで段差が出ない */
  background: linear-gradient(180deg,
    rgba(255, 230, 240, 0.5) 0%,
    rgba(220, 220, 245, 0.55) 22%,
    rgba(170, 215, 245, 0.85) 55%,
    rgba(140, 195, 235, 0.95) 100%);
  border-top: none;
  color: var(--text-on-light);
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.site-footer__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.18em;
  color: var(--text-on-light);
  margin-bottom: 24px;
}

.site-footer__title small {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--text-on-light-sub);
  text-shadow: none;
  margin-left: 8px;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 32px;
  align-items: start;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  font-size: 0.95rem;
}

.site-footer__links a {
  color: var(--text-on-light);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s ease;
}

.site-footer__links a:hover {
  color: #ff3e7a;
}

.site-footer__links svg {
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
  fill: currentColor;
}

.site-footer__x {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-footer__x-label {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--text-on-light);
  font-weight: 700;
}

.site-footer__hashtag {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-steel);
  border-radius: 12px;
  font-size: 0.85rem;
  color: var(--text-main);
  line-height: 1.4;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-footer__hashtag:hover {
  border-color: var(--color-pink);
  box-shadow: var(--shadow-pink);
}

.site-footer__hashtag svg {
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  fill: var(--text-main);
}

.site-footer__bottom {
  max-width: var(--max-width);
  margin: 32px auto 0;
  padding: 16px 24px 0;
  border-top: 1px solid rgba(120, 150, 200, 0.4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-on-light-sub);
  font-family: var(--font-ui);
  letter-spacing: 0.05em;
}

.site-footer__bottom a {
  color: var(--text-on-light);
  font-weight: 600;
}

.site-footer__bottom a:hover {
  color: #ff3e7a;
}

/* ============================================
   Typography
   ============================================ */
.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: var(--text-main);
  position: relative;
  display: inline-block;
}

.section-title__prefix {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-bottom: 8px;
  text-shadow: var(--shadow-gold);
}

.section-title__jp {
  display: block;
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.1em;
  color: var(--text-sub);
  margin-top: 8px;
}

.section {
  padding: 80px 0;
  position: relative;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: #fff;
  background: linear-gradient(135deg, var(--color-orange), var(--color-pink));
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow:
    0 6px 18px rgba(255, 58, 168, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  position: relative;
  overflow: hidden;
  border: none;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow:
    0 10px 28px rgba(255, 58, 168, 0.6),
    0 0 22px rgba(255, 140, 42, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  filter: brightness(1.08);
}

.btn--lg {
  padding: 18px 48px;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

.btn--turquoise {
  background: linear-gradient(135deg, var(--color-turquoise), var(--color-blue));
  box-shadow:
    0 6px 18px rgba(63, 214, 200, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.btn--turquoise:hover {
  box-shadow:
    0 10px 28px rgba(63, 214, 200, 0.6),
    0 0 22px rgba(61, 167, 255, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn--outline {
  background: rgba(255, 255, 255, 0.85);
  border: 1.5px solid var(--color-pink);
  color: var(--color-pink);
  box-shadow: 0 4px 12px rgba(255, 58, 122, 0.15);
}

.btn--outline:hover {
  background: #fff;
  box-shadow: 0 6px 16px rgba(255, 58, 122, 0.28), 0 0 0 1px var(--color-pink);
  color: var(--color-pink);
  filter: brightness(1);
}

.btn__arrow {
  display: inline-block;
  font-size: 1.2em;
  line-height: 1;
  transition: transform 0.2s ease;
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* ============================================
   Hero (TOP)
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: stretch;
  overflow: hidden;
  padding: 100px 24px 32px;
  gap: 24px;
}

/* 背景：深い闇のベース（最奥） */
.hero__bg-base {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 70% 60% at 25% 30%, rgba(63, 214, 200, 0.25) 0%, transparent 60%),
    radial-gradient(ellipse 70% 60% at 75% 70%, rgba(255, 140, 42, 0.30) 0%, transparent 60%),
    radial-gradient(ellipse 90% 100% at 50% 100%, rgba(255, 58, 168, 0.20) 0%, transparent 70%),
    var(--bg-base);
}

/* 背景：キービジュアル背景画像（紫の靄なし、自然に表示） */
.hero__bg-image {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.85;
}

/* オーバーレイ：全体に薄く白 + 上下端は明るく白フェード */
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.22) 0%, transparent 22%, transparent 78%, rgba(255, 255, 255, 0.22) 100%),
    rgba(255, 255, 255, 0.12);
}

/* キャラクター層 */
.hero__char {
  position: absolute;
  pointer-events: none;
  z-index: 3;
  will-change: transform;
  filter:
    drop-shadow(0 4px 12px rgba(255, 255, 255, 0.35))
    drop-shadow(0 0 22px rgba(255, 210, 63, 0.25));
}

/* dai: 中央寄り左、ロゴと同じ高さに立つ（top基準でロゴと連動）
   2K/4K では top/width の max を上げて、画面に対する比率を維持 */
.hero__char--dai {
  left: 10%;
  top: clamp(120px, 22vh, 480px);
  /* 1920時 24vw=460、4K時 24vw=921、5000px以上 max 1040 */
  width: clamp(220px, 24vw, 1040px);
  animation: float-dai 6s ease-in-out infinite;
}

/* drone: catchcopy と干渉しないよう上方寄り（ロゴと suu の中間） */
.hero__char--drone {
  right: 26%;
  bottom: 36%;
  width: clamp(140px, 13vw, 500px);
  animation: float-drone 4.5s ease-in-out infinite;
  z-index: 6;
}

/* suu: 中央寄り右、ロゴと同じ高さに立つ（top基準でロゴと連動）
   2K/4K では top/width の max を上げて、画面に対する比率を維持 */
.hero__char--suu {
  right: 10%;
  top: clamp(120px, 22vh, 480px);
  /* 1920時 26vw=499、4K時 26vw=998、5000px以上 max 1160 */
  width: clamp(220px, 26vw, 1160px);
  animation: float-suu 5.2s ease-in-out infinite;
  animation-delay: 0.6s;
}

/* ふわふわアニメーション */
@keyframes float-dai {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50%      { transform: translateY(-14px) rotate(1deg); }
}

@keyframes float-drone {
  0%, 100% { transform: translateY(0) rotate(-3deg); }
  25%      { transform: translateY(-10px) rotate(2deg); }
  50%      { transform: translateY(-18px) rotate(-2deg); }
  75%      { transform: translateY(-8px) rotate(3deg); }
}

@keyframes float-suu {
  0%, 100% { transform: translateY(0) rotate(1deg); }
  50%      { transform: translateY(-16px) rotate(-2deg); }
}

.hero__inner {
  /* 1920以下: 1280固定、1920超〜3840: 66.7vw で連続拡大、3840以上: 2560 で頭打ち */
  max-width: clamp(1280px, 66.7vw, 2560px);
  width: 100%;
  margin: 0 auto;
  position: relative;
  z-index: 5;
  text-align: center;
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

/* HERO キャッチコピー画像（ロゴと申込バナーの中間に絶対配置）
   absolute にすることで hero の自然高さに影響を与えず、100vh 内に収まる */
.hero__catchcopy {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  /* 画面が狭くなるほど bottom を大きく → catchcopy を上に動かして apply 被りを防ぐ
     1200: 178、1500: 161、1920: 137 (≒前回希望134)、2400: 110、3840: 30 */
  bottom: clamp(30px, calc(245px - 5.6vw), 200px);
  z-index: 5;
  display: block;
  width: auto;
  /* 1920時 34vw=653、4K時 34vw=1306、約4100px以上 max 1400 */
  max-width: clamp(260px, 34vw, 1400px);
  height: auto;
  pointer-events: none;
  filter:
    drop-shadow(0 4px 12px rgba(255, 58, 168, 0.5))
    drop-shadow(0 0 18px rgba(255, 255, 255, 0.4));
}

/* HERO 下部に取り込む申込バナー */
.hero__apply {
  position: relative;
  z-index: 5;
  width: 100%;
}

.hero__apply .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.hero__center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.hero__logo {
  /* 1920以下: 720 固定、1920超〜3840: 37.5vw で連続拡大、3840以上: 1440 で頭打ち */
  max-width: clamp(720px, 37.5vw, 1440px);
  width: 85%;
  height: auto;
  margin-top: -30px;
  margin-bottom: 20px;
  filter:
    drop-shadow(0 4px 14px rgba(255, 255, 255, 0.55))
    drop-shadow(0 0 36px rgba(255, 255, 255, 0.3));
}

.hero__title {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: clamp(1rem, 1.8vw, 1.35rem);
  letter-spacing: 0.04em;
  line-height: 1.4;
  margin-bottom: 14px;
  color: var(--text-main);
  text-shadow:
    0 2px 8px rgba(0, 0, 0, 0.85),
    0 0 12px rgba(0, 0, 0, 0.6);
}

.hero__title small {
  display: block;
  font-size: 0.75em;
  color: var(--color-gold);
  margin-top: 4px;
  text-shadow:
    0 2px 8px rgba(0, 0, 0, 0.85),
    var(--shadow-gold);
}

.hero__hotchill {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-script);
  font-weight: 400;
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  line-height: 1;
  margin-bottom: 4px;
}

.hero__hotchill-hot {
  color: var(--color-orange);
  text-shadow:
    0 0 12px rgba(255, 140, 42, 0.85),
    0 0 28px rgba(255, 62, 74, 0.5),
    0 4px 14px rgba(0, 0, 0, 0.85);
}

.hero__hotchill-chill {
  color: var(--color-turquoise);
  text-shadow:
    0 0 12px rgba(63, 214, 200, 0.85),
    0 0 28px rgba(61, 167, 255, 0.5),
    0 4px 14px rgba(0, 0, 0, 0.85);
}

.hero__hotchill-amp {
  color: var(--color-gold);
  font-size: 0.7em;
  text-shadow:
    var(--shadow-gold),
    0 4px 12px rgba(0, 0, 0, 0.85);
}

.hero__hotchill-ruby {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 80px;
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  margin-bottom: 16px;
}

.hero__hotchill-ruby span:first-child {
  color: var(--color-orange);
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8);
}

.hero__hotchill-ruby span:last-child {
  color: var(--color-turquoise);
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8);
}

.hero__catch {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: clamp(0.95rem, 1.5vw, 1.15rem);
  color: var(--text-main);
  text-shadow:
    0 2px 8px rgba(0, 0, 0, 0.85),
    0 0 12px rgba(0, 0, 0, 0.6);
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.hero__catch .note {
  color: var(--color-pink);
  text-shadow: var(--shadow-pink), 0 2px 6px rgba(0, 0, 0, 0.8);
  font-size: 1.2em;
}

.hero__date-wrap {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 18px;
  margin-bottom: 14px;
  background: rgba(0, 0, 0, 0.42);
  border: 1px solid rgba(255, 210, 63, 0.55);
  border-radius: 999px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.hero__date-label {
  display: inline-block;
  padding: 2px 10px;
  background: linear-gradient(135deg, var(--color-orange), var(--color-pink));
  border-radius: 999px;
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: #fff;
  white-space: nowrap;
}

.hero__date {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  gap: 4px 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  letter-spacing: 0.02em;
  color: #fff;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.7);
}

.hero__date-year {
  font-size: 0.7em;
  color: var(--color-gold);
  text-shadow: var(--shadow-gold);
}

.hero__date-sep {
  display: inline-block;
  margin: 0 2px;
  color: var(--color-pink);
  text-shadow: var(--shadow-pink);
}

.hero__date-day {
  font-size: 0.6em;
  color: #fff;
  font-weight: 600;
  margin-left: 2px;
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .hero__char--dai,
  .hero__char--drone,
  .hero__char--suu {
    animation: none;
  }
}

.hero__scroll {
  display: none; /* 申込バナーが下部にあるため非表示 */
}

.hero__scroll::after {
  content: '';
  width: 1px;
  height: 36px;
  background: linear-gradient(180deg, var(--color-gold), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================
   Theme & Concept Section (TOP)
   ============================================ */
.theme-concept {
  padding: 80px 0;
}

.theme-concept__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.theme-concept__card {
  position: relative;
  padding: 36px 32px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.65), rgba(255, 255, 255, 0.45));
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 24px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
  color: var(--text-on-light);
  box-shadow:
    0 12px 32px rgba(110, 60, 130, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.theme-concept__card--theme {
  background:
    radial-gradient(circle at top right, rgba(255, 140, 42, 0.35), transparent 60%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(255, 230, 235, 0.55));
}

.theme-concept__card--concept {
  background:
    radial-gradient(circle at top right, rgba(63, 200, 240, 0.35), transparent 60%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(220, 240, 255, 0.55));
}

.theme-concept__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-pink), var(--color-turquoise));
}

.theme-concept__card--theme::before {
  background: linear-gradient(90deg, var(--color-orange), var(--color-red));
}

.theme-concept__card--concept::before {
  background: linear-gradient(90deg, var(--color-turquoise), var(--color-blue));
}

.theme-concept__label {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.2em;
  color: var(--text-on-light);
  margin-bottom: 8px;
}

.theme-concept__label small {
  font-family: var(--font-jp);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-on-light-sub);
  text-shadow: none;
  margin-left: 8px;
}

.theme-concept__title {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 2.8rem);
  letter-spacing: 0.06em;
  line-height: 1.2;
  margin-bottom: 18px;
  color: var(--text-on-light);
}

.theme-concept__title--hotchill {
  font-family: var(--font-script);
  font-weight: 400;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  letter-spacing: 0.02em;
}

.theme-concept__title--hotchill .hot {
  color: var(--color-orange);
  text-shadow: 0 0 12px rgba(255, 140, 42, 0.6);
}

.theme-concept__title--hotchill .chill {
  color: var(--color-turquoise);
  text-shadow: 0 0 12px rgba(63, 214, 200, 0.6);
}

.theme-concept__title--hotchill .amp {
  color: var(--color-gold);
  font-size: 0.7em;
  text-shadow: var(--shadow-gold);
}

.theme-concept__notes {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 1.8rem;
  color: #ff5a1a;
  opacity: 0.95;
  text-shadow:
    0 0 6px rgba(255, 255, 255, 0.7),
    0 2px 4px rgba(184, 39, 106, 0.25);
}

.theme-concept__body {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-on-light);
}

/* ============================================
   申込バナー
   ============================================ */
.apply-banner {
  padding: 60px 0;
}

.apply-banner__inner {
  position: relative;
  padding: clamp(12px, 2vw, 22px) clamp(14px, 2.5vw, 32px);
  background:
    linear-gradient(135deg, rgba(255, 140, 42, 0.30), rgba(255, 58, 168, 0.24) 50%, rgba(63, 214, 200, 0.24)),
    linear-gradient(135deg, rgba(20, 14, 46, 0.7), rgba(20, 14, 46, 0.55));
  border: 1px solid rgba(255, 210, 63, 0.55);
  border-radius: 20px;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: clamp(10px, 1.6vw, 24px);
  box-shadow:
    0 0 24px rgba(255, 140, 42, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.apply-banner__badge {
  width: 80px;
  height: 80px;
  flex: 0 0 80px;
}

.apply-banner__badge {
  width: clamp(68px, 8vw, 96px);
  height: clamp(68px, 8vw, 96px);
  flex: 0 0 clamp(68px, 8vw, 96px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: radial-gradient(circle, var(--color-orange), var(--color-red) 70%);
  color: #fff;
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: clamp(0.65rem, 1vw, 0.85rem);
  line-height: 1.3;
  border-radius: 50%;
  box-shadow:
    0 0 16px rgba(255, 140, 42, 0.6),
    inset 0 -4px 8px rgba(0, 0, 0, 0.25),
    inset 0 2px 4px rgba(255, 255, 255, 0.3);
  letter-spacing: 0.02em;
  animation: badge-pulse 2.4s ease-in-out infinite;
}

@keyframes badge-pulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 16px rgba(255, 140, 42, 0.6), inset 0 -4px 8px rgba(0, 0, 0, 0.25), inset 0 2px 4px rgba(255, 255, 255, 0.3); }
  50% { transform: scale(1.05); box-shadow: 0 0 28px rgba(255, 140, 42, 0.9), inset 0 -4px 8px rgba(0, 0, 0, 0.25), inset 0 2px 4px rgba(255, 255, 255, 0.3); }
}

.apply-banner__copy h3 {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: clamp(0.75rem, 1.3vw, 1.35rem);
  color: var(--text-main);
  margin-bottom: 4px;
}

.apply-banner__copy strong {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(0.9rem, 2.2vw, 2.4rem);
  letter-spacing: 0.04em;
  background: linear-gradient(90deg, var(--color-orange), var(--color-pink));
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.apply-banner__copy small {
  display: block;
  margin-top: 6px;
  font-size: clamp(0.62rem, 0.9vw, 0.78rem);
  color: #fff;
}

.apply-banner__period {
  text-align: center;
}

.apply-banner__period-label {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: clamp(0.62rem, 0.9vw, 0.78rem);
  color: var(--text-main);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.apply-banner__period-date {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(0.8rem, 1.8vw, 1.7rem);
  letter-spacing: 0.02em;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
}

.apply-banner__period-date .arrow {
  color: var(--color-pink);
  font-size: 0.9em;
}

@media (max-width: 720px) {
  .apply-banner__inner {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
  }
  .apply-banner__period {
    grid-column: 1 / -1;
    text-align: left;
  }
  .apply-banner__period-date {
    justify-content: flex-start;
  }
}

/* ============================================
   ジャンル
   ============================================ */
.genres {
  padding: 60px 0;
}

.genres__lead {
  text-align: center;
  margin-bottom: 40px;
  font-size: 1rem;
  color: var(--text-on-light);
  line-height: 1.8;
  font-weight: 600;
}

.genres__lead strong {
  color: #ff3e7a;
  font-weight: 800;
  background: linear-gradient(transparent 60%, rgba(255, 210, 63, 0.45) 60%);
  padding: 0 4px;
}

.genres__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.genre-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 20px 12px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.4));
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 18px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow:
    0 8px 22px rgba(110, 60, 130, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.genre-item:hover {
  transform: translateY(-4px);
  border-color: var(--color-gold);
  box-shadow: var(--shadow-gold);
}

.genre-item__icon {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(255, 140, 42, 0.22), rgba(255, 58, 168, 0.18));
  border-radius: 50%;
  color: #ff3e7a;
  transition: transform 0.25s ease, color 0.25s ease;
}

.genre-item:hover .genre-item__icon {
  transform: rotate(-6deg) scale(1.05);
  color: var(--color-orange);
}

.genre-item__icon svg {
  width: 38px;
  height: 38px;
  fill: currentColor;
}

.genre-item__name {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 0.9rem;
  text-align: center;
  letter-spacing: 0.03em;
  color: var(--text-on-light);
  line-height: 1.3;
}

.genres__footnote {
  text-align: right;
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--text-on-light-sub);
  font-weight: 700;
  letter-spacing: 0.05em;
}

@media (max-width: 1024px) {
  .genres__grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 540px) {
  .genres__grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================
   ワールドプレビュー (Hot Stage / Chill Lounge)
   ============================================ */
.worlds-preview {
  position: relative;
  width: 100%;
  margin-top: 60px;
  padding: 0;
  overflow: hidden;
  isolation: isolate;
}

.worlds-preview__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  /* パララックス：移動分の余白を確保するため拡大 */
  transform: translate3d(0, 0, 0) scale(1.2);
  transform-origin: center;
  will-change: transform;
  transition: transform 0.05s linear;
}

@media (prefers-reduced-motion: reduce) {
  .worlds-preview__bg { transform: scale(1) !important; }
}

/* 透明（背景アートをそのまま見せる） */
.worlds-preview__veil {
  display: none;
}

.worlds-preview__head {
  position: relative;
  z-index: 2;
  padding: 64px 0 36px;
  text-align: center;
}

/* 日付ピルと同じテイストで見出し全体を暗いガラスピルに収容 */
.worlds-preview__head-pill {
  display: inline-block;
  padding: 20px 40px 22px;
  background: rgba(0, 0, 0, 0.42);
  border: 1px solid rgba(255, 210, 63, 0.55);
  border-radius: 22px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.worlds-preview__caption {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: 0.18em;
  margin-bottom: 8px;
  background: linear-gradient(90deg, #ff5e5e, #ff3e93, #3da7e8);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.6));
}

.worlds-preview__sub {
  color: var(--color-gold);
  font-size: 0.95rem;
  margin-bottom: 4px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.worlds-preview__lead {
  color: #fff;
  font-weight: 700;
  margin-bottom: 0;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.55);
}

.worlds-preview__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

/* ============================================
   WORLD PREVIEW - コンセプトアート背景 + 左Chill / 右Hot のテキスト
   ============================================ */
.worlds-preview__art {
  position: relative;
  z-index: 2;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.worlds-preview__side {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 36px 32px;
  min-height: clamp(280px, 36vw, 420px);
  color: #fff;
}

/* Chill（左）：夜空の青系オーバーレイで底面のテキスト可読性を確保 */
.worlds-preview__side--chill {
  background: linear-gradient(180deg,
    transparent 0%,
    rgba(20, 30, 70, 0.15) 35%,
    rgba(20, 40, 90, 0.55) 70%,
    rgba(15, 30, 75, 0.78) 100%);
}

/* Hot（右）：暖色系の暗化グラデで底面のテキスト可読性を確保 */
.worlds-preview__side--hot {
  background: linear-gradient(180deg,
    transparent 0%,
    rgba(120, 30, 60, 0.15) 35%,
    rgba(170, 40, 70, 0.55) 70%,
    rgba(155, 30, 40, 0.78) 100%);
}

.worlds-preview__title {
  font-family: var(--font-script);
  font-weight: 400;
  font-size: clamp(2.4rem, 4.2vw, 3.2rem);
  line-height: 1;
  color: #fff;
  text-shadow:
    0 4px 14px rgba(0, 0, 0, 0.7),
    0 0 18px rgba(255, 255, 255, 0.35);
  margin-bottom: 6px;
}

.worlds-preview__side--chill .worlds-preview__title {
  text-shadow:
    0 4px 14px rgba(0, 0, 0, 0.7),
    0 0 18px rgba(120, 220, 255, 0.5);
}

.worlds-preview__side--hot .worlds-preview__title {
  text-shadow:
    0 4px 14px rgba(0, 0, 0, 0.7),
    0 0 18px rgba(255, 180, 80, 0.5);
}

.worlds-preview__jp {
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: #fff;
  margin-bottom: 14px;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8);
}

.worlds-preview__body {
  font-size: 0.95rem;
  color: #fff;
  line-height: 1.75;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8);
  margin-bottom: 20px;
}

/* 「もっと見る」のみがボタン */
.worlds-preview__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  padding: 10px 22px;
  border-radius: 999px;
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  color: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  box-shadow:
    0 6px 16px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.worlds-preview__btn--chill {
  background: linear-gradient(135deg, #3fd6c8, #3da7ff);
}

.worlds-preview__btn--hot {
  background: linear-gradient(135deg, #ff8c2a, #ff3e7a);
}

.worlds-preview__btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow:
    0 10px 22px rgba(0, 0, 0, 0.4),
    0 0 18px rgba(255, 255, 255, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

@media (max-width: 768px) {
  .worlds-preview__art {
    grid-template-columns: 1fr;
  }
  .worlds-preview__side {
    min-height: clamp(220px, 50vw, 320px);
  }
}

/* ============================================
   ページヘッダー（下層ページ）
   ============================================ */
.page-header {
  position: relative;
  padding: 160px 24px 60px;
  text-align: center;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, rgba(255, 140, 42, 0.18), transparent 70%),
    radial-gradient(ellipse 60% 80% at 50% 100%, rgba(63, 214, 200, 0.14), transparent 70%);
}

.page-header__prefix {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.25em;
  font-size: 0.9rem;
  color: #ff3e7a;
  margin-bottom: 12px;
}

.page-header__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-on-light);
  margin-bottom: 12px;
}

.page-header__jp {
  display: block;
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.1em;
  color: #ff3e7a;
  margin-top: 8px;
}

.page-header__lead {
  max-width: 720px;
  margin: 16px auto 0;
  color: var(--text-on-light);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.8;
}

/* ============================================
   Prose 共通
   ============================================ */
.prose {
  max-width: 860px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-on-light);
  font-weight: 500;
}

.prose p { margin-bottom: 1.2em; }
.prose strong { color: #ff3e7a; font-weight: 800; }
.prose h3 {
  font-family: var(--font-jp);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-on-light);
  margin: 2em 0 0.6em;
  padding-left: 14px;
  border-left: 4px solid #ff3e7a;
}
.prose ul {
  margin: 0 0 1.4em 1.4em;
  list-style: disc;
}
.prose ul li { margin-bottom: 0.4em; }
.prose a:not(.btn) {
  color: #ff3e7a;
  border-bottom: 1px dotted #ff3e7a;
  font-weight: 700;
}
.prose a:not(.btn):hover {
  color: var(--text-on-light);
  border-bottom-color: var(--text-on-light);
}

/* ============================================
   Info Table（開催概要・出展案内）
   ============================================ */
.info-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

.info-table th, .info-table td {
  padding: 16px 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(13, 78, 163, 0.18);
}

.info-table th {
  width: 180px;
  font-family: var(--font-jp);
  font-weight: 800;
  font-size: 0.92rem;
  color: #ff3e7a;
  letter-spacing: 0.03em;
  background: rgba(255, 62, 122, 0.06);
}

.info-table td {
  color: var(--text-on-light);
  font-weight: 500;
}

@media (max-width: 640px) {
  .info-table th, .info-table td {
    display: block;
    width: 100%;
    padding: 8px 12px;
  }
  .info-table th { background: rgba(255, 62, 122, 0.08); }
}

/* ============================================
   FAQ
   ============================================ */
.faq-category {
  margin-bottom: 56px;
}

.faq-category__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.12em;
  color: #ff3e7a;
  margin-bottom: 4px;
}

.faq-category__title-jp {
  display: block;
  font-family: var(--font-jp);
  font-weight: 800;
  font-size: 1rem;
  color: var(--text-on-light);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}

.faq-item {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.4));
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 14px;
  margin-bottom: 14px;
  overflow: hidden;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-on-light);
  box-shadow:
    0 6px 18px rgba(110, 60, 130, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.faq-item__question {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 22px;
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-on-light);
  cursor: pointer;
  position: relative;
  list-style: none;
}

.faq-item__question::-webkit-details-marker { display: none; }

.faq-item__q-mark {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-orange), var(--color-pink));
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  border-radius: 8px;
}

.faq-item__q-text { flex: 1; }

.faq-item__toggle {
  flex: 0 0 24px;
  margin-left: auto;
  font-size: 1.2rem;
  color: #ff3e7a;
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-item__toggle {
  transform: rotate(45deg);
}

.faq-item__answer {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 0 22px 22px;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-on-light);
}

.faq-item__a-text a {
  color: #ff3e7a;
  border-bottom: 1px dotted #ff3e7a;
  font-weight: 700;
}
.faq-item__a-text strong {
  color: #ff3e7a;
  font-weight: 800;
}

.faq-item__a-mark {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-turquoise), var(--color-blue));
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  border-radius: 8px;
}

.faq-item__a-text { flex: 1; }

/* ============================================
   準備中バッジ
   ============================================ */
.coming-soon {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 62, 122, 0.12);
  border: 1px solid #ff3e7a;
  border-radius: 999px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: #ff3e7a;
}

/* ============================================
   フォーム
   ============================================ */
.form {
  max-width: 720px;
  margin: 0 auto;
}

.form__group {
  margin-bottom: 24px;
}

.form__label {
  display: block;
  font-family: var(--font-jp);
  font-weight: 800;
  font-size: 0.92rem;
  color: var(--text-on-light);
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.form__label .required {
  margin-left: 8px;
  padding: 2px 8px;
  background: linear-gradient(135deg, var(--color-orange), var(--color-pink));
  color: #fff;
  font-size: 0.7rem;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(13, 78, 163, 0.25);
  border-radius: 10px;
  color: var(--text-on-light);
  font-family: var(--font-jp);
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: #ff3e7a;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 0 0 3px rgba(255, 62, 122, 0.2);
}

.form__textarea {
  min-height: 180px;
  resize: vertical;
  font-family: var(--font-jp);
}

.form__check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--text-on-light);
  font-weight: 600;
}

.form__check input[type="checkbox"] {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  accent-color: #ff3e7a;
}

.form__check a {
  color: #ff3e7a;
  border-bottom: 1px dotted #ff3e7a;
  font-weight: 700;
}

.form__error {
  display: block;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--color-red);
  min-height: 1.2em;
}

.form__honeypot {
  position: absolute !important;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form__actions {
  text-align: center;
  margin-top: 32px;
}

.form-notice {
  padding: 16px 20px;
  border-radius: 12px;
  margin-bottom: 24px;
  font-weight: 700;
}

.form-notice--success {
  background: rgba(63, 200, 115, 0.12);
  border: 1px solid var(--color-green);
  color: var(--color-green);
}

.form-notice--error {
  background: rgba(255, 62, 74, 0.12);
  border: 1px solid var(--color-red);
  color: var(--color-red);
}

/* ============================================
   お問い合わせフォーム（Google Forms 埋め込み）
   ============================================ */
.contact-form-embed {
  max-width: 760px;
  margin: 0 auto;
  background: #fff;
  border-radius: 16px;
  padding: 12px;
  box-shadow: 0 6px 22px rgba(13, 78, 163, 0.08), 0 0 0 1px rgba(255, 62, 122, 0.06);
}

.contact-form-embed iframe {
  display: block;
  width: 100%;
  border: 0;
  border-radius: 8px;
}

/* ============================================
   404
   ============================================ */
.error-404 {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 60px;
}

.error-404__code {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(5rem, 16vw, 10rem);
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--color-orange), var(--color-pink), var(--color-turquoise));
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 16px;
}

.error-404__title {
  font-family: var(--font-jp);
  font-weight: 800;
  font-size: 1.5rem;
  margin-bottom: 24px;
  color: var(--text-on-light);
}

/* ============================================
   共通：画像プレースホルダ
   ============================================ */
.image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
  background: repeating-linear-gradient(
    135deg,
    rgba(13, 78, 163, 0.06),
    rgba(13, 78, 163, 0.06) 12px,
    rgba(255, 62, 122, 0.06) 12px,
    rgba(255, 62, 122, 0.06) 24px
  );
  border: 2px dashed rgba(13, 78, 163, 0.25);
  border-radius: 16px;
  color: rgba(13, 78, 163, 0.65);
  font-family: var(--font-jp);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 16px;
  line-height: 1.4;
}

/* ============================================
   共通：セクション見出し（汎用 section-head）
   ============================================ */
.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head__caption {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--color-pink);
  margin-bottom: 8px;
}

.section-head__title {
  font-family: var(--font-jp);
  font-weight: 800;
  font-size: clamp(1.6rem, 3.4vw, 2.2rem);
  color: var(--text-on-light);
  margin-bottom: 12px;
}

.section-head__lead {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-on-light);
  max-width: 720px;
  margin: 0 auto;
}

/* ============================================
   TOP追加セクションの交互配色
   ピンク系（rose）と青系（azure）を交互に
   ============================================ */

/* ピンク系（薄ローズ → 薄ピンク） */
.info-overview,
.corporate-cta,
.sponsors {
  background: linear-gradient(180deg, rgba(255, 218, 232, 0.5), rgba(255, 230, 240, 0.5));
}

/* 青系（薄ラベンダー → 薄水色）：past-event の色を踏襲 */
.event-programs,
.past-event {
  background: linear-gradient(180deg, rgba(231, 220, 255, 0.5), rgba(220, 240, 255, 0.5));
}

/* ============================================
   開催情報（TOP用 要約）
   ============================================ */
.info-overview {
  padding: 88px 0;
}

/* ============================================
   イベント内容（5プログラム）
   ============================================ */
.event-programs {
  padding: 88px 0;
}

.event-programs__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.event-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 6px 22px rgba(13, 78, 163, 0.08), 0 0 0 1px rgba(255, 62, 122, 0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.event-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(13, 78, 163, 0.14), 0 0 0 1px rgba(255, 62, 122, 0.18);
}

.event-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  min-height: 0;
  overflow: hidden;
  background: rgba(13, 78, 163, 0.04);
  border-bottom: 1px dashed rgba(13, 78, 163, 0.15);
}

.event-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* image-placeholder クラスが付いていた頃の枠スタイルを維持（画像未差し込み時用） */
.event-card__media.image-placeholder {
  aspect-ratio: 16 / 9;
  min-height: 0;
  border-radius: 0;
  border: none;
  border-bottom: 1px dashed rgba(13, 78, 163, 0.15);
}

.event-card__body {
  padding: 24px 26px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.event-card__sub {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--color-pink);
}

.event-card__title {
  font-family: var(--font-jp);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text-on-light);
}

.event-card__desc {
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--text-on-light);
}

/* ============================================
   企業出展について
   ============================================ */
.corporate-cta {
  padding: 88px 0;
}

.corporate-cta__inner {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 1.6fr;
  gap: 32px;
  align-items: center;
}

.corporate-cta__media {
  min-height: 220px;
}

/* 実画像が入った支援者出展ビジュアル */
.corporate-cta__media--photo {
  position: relative;
  aspect-ratio: 16 / 10;
  min-height: 0;
  overflow: hidden;
  border-radius: 14px;
  box-shadow: 0 8px 22px rgba(13, 78, 163, 0.14);
}

.corporate-cta__media--photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.corporate-cta__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.corporate-cta__list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  font-size: 0.96rem;
  line-height: 1.7;
  color: var(--text-on-light);
}

.corporate-cta__list li::before {
  content: '◆';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-pink);
  font-size: 0.85em;
}

/* 支援者出展 CTA のボタン群（PCは横並び・モバイルは縦並び） */
.corporate-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.corporate-cta__actions .btn {
  text-align: center;
}

/* ============================================
   去年のイベントの様子
   ============================================ */
.past-event {
  padding: 88px 0;
}

.past-event__gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.past-event__item {
  aspect-ratio: 4 / 3;
  min-height: 0;
}

/* メインビューア（クリックで切替表示） */
.past-event__viewer {
  max-width: 960px;
  margin: 0 auto 20px;
  aspect-ratio: 16 / 9;
  border-radius: 16px;
  overflow: hidden;
  background: rgba(13, 78, 163, 0.04);
  box-shadow: 0 10px 28px rgba(13, 78, 163, 0.18);
}

.past-event__main {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.3s ease;
}

/* サムネイル一覧 */
.past-event__thumbs {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.past-event__thumb {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #fff;
  border: 2px solid transparent;
  border-radius: 10px;
  padding: 0;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.past-event__thumb:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(255, 62, 122, 0.22);
}

.past-event__thumb.is-active {
  border-color: var(--color-pink);
  box-shadow: 0 4px 12px rgba(255, 62, 122, 0.32);
}

.past-event__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================
   協賛団体
   ============================================ */
.sponsors {
  padding: 88px 0;
}

.sponsors__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  color: var(--color-pink);
  text-align: center;
  margin-bottom: 20px;
}

/* 主催 / スポンサー出展 / パートナー の共通ブロック */
.sponsors__block {
  margin-bottom: 56px;
}

.sponsors__block:last-child {
  margin-bottom: 0;
}

/* 主催・スポンサー（任意数のロゴを横並びで、足りなければ折返し） */
.sponsors__logo-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 24px;
  max-width: 960px;
  margin: 0 auto;
}

.sponsors__logo-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 6px 20px rgba(13, 78, 163, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sponsors__logo-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(255, 62, 122, 0.16);
}

.sponsors__logo-item img {
  display: block;
  max-width: 180px;
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* パートナー（数が多くなる想定） */
.sponsors__partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

/* hidden 属性で明示的に隠す（display:grid の上書き防止） */
.sponsors__partners-grid[hidden] {
  display: none;
}

.sponsors__partner-item {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  padding: 10px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(13, 78, 163, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sponsors__partner-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 62, 122, 0.16);
}

.sponsors__partner-item img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* ============================================
   2K/4K：catchcopy を下端寄りにしてロゴとの縦距離をスケール
   ============================================ */
@media (min-width: 1921px) {
  .hero__catchcopy {
    bottom: clamp(40px, calc(140px - (100vw - 1920px) * 0.05), 140px);
  }
}

/* ============================================
   レスポンシブ
   ============================================ */
@media (max-width: 1024px) {
  .theme-concept__grid { grid-template-columns: 1fr; }
  /* キャラの bottom は PC 設定を継承（dai/suu: top基準、drone: bottom 36%）。
     サイズ・left/right だけ画面幅縮小に合わせて再調整 */
  .hero__char--dai { width: clamp(220px, 28vw, 320px); left: 4%; }
  .hero__char--suu { width: clamp(220px, 28vw, 320px); right: 4%; }
  .hero__char--drone { width: clamp(130px, 16vw, 200px); }

  /* ===== ナビ（タブレット以下、ハンバーガー化） ===== */
  :root { --header-height: 64px; }

  .site-header__logo {
    height: 32px;
    gap: 8px;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 32px 24px;
    background: rgba(13, 18, 64, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    gap: 0;
  }
  .site-nav.is-open { transform: translateX(0); }

  /* リサイズ中は transition を無効にして、メディアクエリ切替時のナビ一瞬表示を抑制 */
  .is-resizing .site-nav { transition: none !important; }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .site-nav__link {
    display: block;
    padding: 14px 8px;
    font-size: 1.05rem;
    color: #fff;
    text-shadow: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  }
  .site-nav__link::after { display: none; }
  .site-nav__link:hover,
  .site-nav__link[aria-current="page"] {
    color: var(--color-gold);
    text-shadow: var(--shadow-gold);
  }
  .site-nav__cta {
    margin: 24px 0 0;
    text-align: center;
    padding: 14px 20px;
  }
  .nav-toggle { display: block; }

  /* ===== TOP追加セクション：タブレット ===== */
  .event-programs__grid { grid-template-columns: 1fr; gap: 20px; }
  .corporate-cta__inner { grid-template-columns: 1fr; gap: 20px; }
  .past-event__gallery { grid-template-columns: repeat(2, 1fr); }
  .sponsors__partners-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
  /* ===== ヒーロー（モバイル） ===== */
  .hero {
    min-height: auto;
    padding: 88px 16px 24px;
    gap: 16px;
  }

  .hero__inner { margin-top: 8px; }

  .hero__center { gap: 0; }

  .hero__logo {
    max-width: 320px;
    width: 78%;
    margin-bottom: 14px;
  }

  /* 日付ピル：縦長スマホ対応で2段折返し可能に */
  .hero__date-wrap {
    flex-wrap: wrap;
    justify-content: center;
    padding: 8px 14px;
    gap: 8px;
  }
  .hero__date-label {
    font-size: 0.66rem;
    padding: 2px 8px;
  }
  .hero__date { font-size: 1rem; gap: 2px 6px; }

  /* キャラ：モバイルではロゴと多少被ってもいいので大きく配置
     catchcopy が通常フローになって hero 高さが伸びるため、bottom基準ではなく top基準に統一。
     width は clamp で fluid 化（スマホ幅は min値で頭打ち = 従来サイズ維持、タブレット境界(682〜768)で拡大） */
  .hero__char--dai {
    width: clamp(150px, 22vw, 220px);
    left: -8px;
    top: 180px;
    bottom: auto;
    right: auto;
    opacity: 0.95;
  }
  .hero__char--suu {
    width: clamp(160px, 24vw, 230px);
    right: -4px;
    top: 150px;
    bottom: auto;
    left: auto;
    opacity: 0.95;
  }
  .hero__char--drone {
    width: clamp(80px, 14vw, 130px);
    left: auto;
    right: 12%;
    top: 350px;
    bottom: auto;
    transform: none;
    z-index: 6;
    display: block;
  }
  /* モバイル時の drone は translateX が不要なので、元のキーフレーム（translateY のみ）を使用 */

  /* catchcopy：モバイルは通常フローに戻して申込バナーの直上に並べる
     画像の上下に透明領域があるので、その分も負margin で詰めて視覚的な隙間を消す */
  .hero__catchcopy {
    position: static;
    transform: none;
    left: auto;
    bottom: auto;
    max-width: 92%;
    margin: -70px auto -40px;
  }

  /* 申込バナー：モバイル縦並び＋コンパクト化 */
  .apply-banner__inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 18px 16px;
    gap: 14px;
  }
  /* モバイルでは円バッジを横長ピル型に */
  .apply-banner__badge {
    margin: 0 auto;
    width: auto;
    height: auto;
    flex: 0 0 auto;
    padding: 8px 22px;
    border-radius: 999px;
    font-size: 0.85rem;
    line-height: 1.3;
    display: inline-block;
    text-align: center;
  }
  .apply-banner__badge br { display: none; }
  .apply-banner__copy h3 { font-size: 1rem; }
  .apply-banner__copy strong { font-size: 1.6rem; }
  .apply-banner__copy small { font-size: 0.72rem; }
  /* 募集期間も中央寄せに（既存の 960px breakpoint の左寄せを打ち消し） */
  .apply-banner__period {
    grid-column: auto;
    text-align: center;
  }
  .apply-banner__period-date { justify-content: center; font-size: 1.1rem; }
  .apply-banner__period-label { font-size: 0.72rem; }
  .apply-banner__inner .btn--lg {
    padding: 14px 28px;
    font-size: 1rem;
  }

  /* THEME / WORLD CONCEPT */
  .theme-concept { padding: 40px 0; }
  .theme-concept__card { padding: 24px 20px; }
  .theme-concept__title { font-size: 1.8rem; }
  .theme-concept__title--hotchill { font-size: 2.4rem; }
  .theme-concept__body { font-size: 0.9rem; }
  /* カタカナ補足は次の行に */
  .theme-concept__label small {
    display: block;
    margin-left: 0;
    margin-top: 2px;
  }

  /* ジャンル */
  .genres { padding: 36px 0; }
  .genres__lead { font-size: 0.92rem; }
  .genre-item { padding: 14px 8px; }
  .genre-item__icon { width: 56px; height: 56px; }
  .genre-item__icon svg { width: 30px; height: 30px; }
  .genre-item__name { font-size: 0.78rem; }

  /* WORLD PREVIEW */
  .worlds-preview { margin-top: 32px; }
  .worlds-preview__head { padding: 36px 16px 24px; }
  .worlds-preview__head-pill { padding: 16px 22px; }
  .worlds-preview__caption { font-size: 1.5rem; letter-spacing: 0.12em; }
  .worlds-preview__sub { font-size: 0.85rem; }
  .worlds-preview__lead { font-size: 0.85rem; line-height: 1.5; }
  .worlds-preview__side { padding: 24px 20px; min-height: clamp(220px, 56vw, 320px); }
  .worlds-preview__title { font-size: 2rem; }
  .worlds-preview__jp { font-size: 0.9rem; }
  .worlds-preview__body { font-size: 0.85rem; }

  /* スマホでは縦並びになるので、コンセプトアートを左右で分割して各パネルに割り当てる
     画像幅をパネル幅の2倍に拡大しアスペクト比は保持。上下は若干クロップされるが
     左右で確実に違う領域（チル側／ホット側）が見える */
  .worlds-preview__bg { display: none; }
  .worlds-preview__side--chill {
    background:
      linear-gradient(180deg,
        transparent 0%,
        rgba(20, 30, 70, 0.15) 35%,
        rgba(20, 40, 90, 0.55) 70%,
        rgba(15, 30, 75, 0.78) 100%),
      url('/assets/images/concept-art/concept-art.png') left center / 200% auto no-repeat;
    /* チル背景は主要モチーフが左側に集中するため、テキストは右寄せに */
    align-items: flex-end;
    text-align: right;
  }
  .worlds-preview__side--chill .worlds-preview__btn {
    align-self: flex-end;
  }
  .worlds-preview__side--hot {
    background:
      linear-gradient(180deg,
        transparent 0%,
        rgba(120, 30, 60, 0.15) 35%,
        rgba(170, 40, 70, 0.55) 70%,
        rgba(155, 30, 40, 0.78) 100%),
      url('/assets/images/concept-art/concept-art.png') right center / 200% auto no-repeat;
  }

  /* フッター */
  .site-footer { padding: 36px 0 20px; }
  .site-footer__inner { padding: 0 16px; }
  .site-footer__grid { grid-template-columns: 1fr; gap: 20px; }
  .site-footer__links { gap: 10px 16px; font-size: 0.9rem; }
  .site-footer__hashtag { font-size: 0.78rem; }
  .site-footer__bottom { font-size: 0.7rem; padding: 12px 16px 0; }

  /* ページヘッダー（下層） */
  .page-header { padding: 110px 20px 40px; }

  /* セクション */
  .section { padding: 40px 0; }

  /* 情報テーブル：モバイル時に上下ブロック化 */
  .info-table th, .info-table td {
    border-bottom: none;
  }
  .info-table tr {
    display: block;
    border-bottom: 1px solid rgba(13, 78, 163, 0.18);
    padding: 12px 0;
  }

  /* TOP追加セクション：モバイル */
  .info-overview,
  .event-programs,
  .corporate-cta,
  .past-event,
  .sponsors { padding: 56px 0; }
  .section-head { margin-bottom: 32px; }
  .event-programs__grid { gap: 16px; }
  .event-card__media { min-height: 160px; }
  .event-card__body { padding: 18px 20px 22px; }
  .event-card__title { font-size: 1.1rem; }
  .event-card__desc { font-size: 0.88rem; }
  .corporate-cta__list li { font-size: 0.88rem; }
  /* モバイル時：ボタン群を縦並びでフル幅に。文字折返し回避のため少し小さく */
  .corporate-cta__actions { flex-direction: column; align-items: stretch; }
  .corporate-cta__actions .btn {
    width: 100%;
    font-size: 0.88rem;
    padding: 12px 16px;
  }
  .past-event__gallery { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .past-event__thumbs { grid-template-columns: repeat(5, 1fr); gap: 8px; }
  .past-event__viewer { margin-bottom: 14px; }
  .sponsors__main-grid { grid-template-columns: 1fr; }
  .sponsors__partners-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .apply-banner__badge { animation: none; }
  .hero__scroll::after { animation: none; }
}