@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Noto+Serif+JP:wght@400;700;900&display=swap');

/* ==========================================
   Design System Variables & Reset
   ========================================== */
:root {
  --color-bg-base: #FAF6F0;       /* 明るいベージュ（和紙風） */
  --color-bg-white: #FFFFFF;      /* 清潔感のあるホワイト */
  --color-primary-indigo: #0A1E36; /* 深みのある藍色（JAPAN BLUE） */
  --color-primary-ink: #1C1C1C;    /* 墨色 */
  --color-accent-vermilion: #E63B2E; /* 鮮やかな朱色 */
  --color-accent-gold: #C5A059;    /* 上品なゴールド */
  --color-accent-gold-light: #F0D59E; /* 明るいゴールド */
  --color-text-dark: #2C2C2C;     /* 本文のダークグレー */
  --color-text-light: #FFFFFF;    /* 明るいテキスト */
  --color-muted: #7E7E7E;         /* 補助テキスト用 */
  
  --font-heading: 'Noto Serif JP', 'TsukuMinPr6N-Regular', 'Georgia', serif;
  --font-body: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow-subtle: 0 4px 20px rgba(10, 30, 54, 0.05);
  --shadow-premium: 0 10px 30px rgba(10, 30, 54, 0.1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-base);
  color: var(--color-text-dark);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 和紙のようなテクスチャを背景に追加 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(197, 160, 89, 0.03) 1px, transparent 0),
                    radial-gradient(rgba(10, 30, 54, 0.02) 1px, transparent 0);
  background-size: 24px 24px;
  background-position: 0 0, 12px 12px;
  pointer-events: none;
  z-index: 9999;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-primary-indigo);
}

/* ==========================================
   Typography & Helper Classes
   ========================================== */
.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 3.5rem;
  position: relative;
  letter-spacing: 0.1em;
  line-height: 1.4;
}

.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-vermilion), var(--color-accent-gold));
  margin: 1.2rem auto 0;
  border-radius: 2px;
}

.section-subtitle {
  display: block;
  font-size: 0.9rem;
  color: var(--color-accent-gold);
  font-family: var(--font-body);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  letter-spacing: 0.2em;
}

/* 和風霞グラデーションセクション区切り */
.kasumi-divider {
  height: 100px;
  background: linear-gradient(180deg, var(--color-bg-base) 0%, var(--color-bg-white) 100%);
  position: relative;
}

/* ==========================================
   Header / Navigation
   ========================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(250, 246, 240, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-subtle);
  border-bottom: 1px solid rgba(197, 160, 89, 0.15);
  transition: var(--transition-smooth);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.8rem 1.5rem;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-wrapper {
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
}

.header-logo-img {
  height: 40px;
  width: auto;
  display: block;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav a {
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.3rem 0;
}

nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent-vermilion);
  transition: var(--transition-smooth);
}

nav a:hover::after {
  width: 100%;
}

.nav-cta-btn {
  background: linear-gradient(135deg, var(--color-accent-vermilion), #b22222);
  color: var(--color-text-light);
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 4px 10px rgba(230, 59, 46, 0.3);
  border: none;
  cursor: pointer;
}

.nav-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(230, 59, 46, 0.4);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--color-primary-indigo);
  margin: 5px 0;
  transition: var(--transition-smooth);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 1.5rem 5rem;
  background-color: var(--color-primary-indigo);
  color: var(--color-text-light);
  overflow: hidden;
}

/* コラージュ背景画像 */
.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('images/IMG_0084.JPG') no-repeat center center / cover;
  opacity: 0.22;
  filter: grayscale(10%);
  z-index: 1;
}

/* 背景動画用スタイル */
.hero-video-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 2;
  pointer-events: none;
}

.hero-video-wrapper iframe {
  width: 100vw;
  height: 56.25vw; /* 16:9 Aspect Ratio */
  min-height: 100vh;
  min-width: 177.77vh; /* 16:9 Aspect Ratio */
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* グラデーションオーバーレイ */
.hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(10, 30, 54, 0.95) 40%, rgba(10, 30, 54, 0.7) 100%);
  z-index: 3;
}

.hero-container {
  position: relative;
  z-index: 4;
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.hero-tag {
  display: inline-block;
  background-color: rgba(240, 213, 158, 0.15);
  border: 1px solid var(--color-accent-gold);
  color: var(--color-accent-gold-light);
  padding: 0.4rem 1.5rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 2rem;
  letter-spacing: 0.15em;
  animation: fadeInUp 1s ease;
}

.hero h2 {
  font-size: 3.2rem;
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
  line-height: 1.3;
  letter-spacing: 0.05em;
  font-weight: 900;
  text-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
  animation: fadeInUp 1.2s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.hero-sub {
  font-size: 1.25rem;
  color: #E2E8F0;
  max-width: 700px;
  margin: 0 auto 3rem;
  line-height: 1.8;
  font-weight: 400;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.hero-cta {
  animation: fadeInUp 1.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.btn-premium {
  display: inline-block;
  position: relative;
  background: linear-gradient(135deg, var(--color-accent-vermilion) 0%, #B22222 100%);
  color: var(--color-text-light);
  padding: 1.2rem 3rem;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: 0 10px 25px rgba(230, 59, 46, 0.4), inset 0 2px 2px rgba(255,255,255,0.2);
  border: none;
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.btn-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: -150%;
  width: 150%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transform: skewX(-20deg);
  transition: 0.75s;
}

.btn-premium:hover::before {
  left: 150%;
  transition: 0.75s;
}

.btn-premium:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(230, 59, 46, 0.5);
}

.btn-premium:active {
  transform: translateY(-1px);
}

/* ==========================================
   Concept Section (伝統万博とは)
   ========================================== */
.concept {
  padding: 8rem 1.5rem;
  background-color: var(--color-bg-white);
  position: relative;
}

.concept-container {
  max-width: 1100px;
  margin: 0 auto;
}

.concept-text {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 5rem;
  font-size: 1.15rem;
  color: var(--color-text-dark);
  line-height: 2;
}

.concept h3 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  color: var(--color-primary-indigo);
}

/* 和風ベン図グラフィック */
.venn-diagram-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 6rem;
  position: relative;
  height: 420px;
  width: 100%;
}

/* サークルレイヤー（背景） */
.venn-circles-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.venn-bg-circle {
  width: 250px;
  height: 250px;
  border-radius: 50%;
  position: absolute;
  box-shadow: var(--shadow-premium);
  transition: var(--transition-smooth);
}

.venn-bg-circle.indigo {
  background-color: transparent;
  border: 3px solid var(--color-primary-indigo);
  top: 20px;
  left: calc(50% - 185px);
  z-index: 2;
}

.venn-bg-circle.vermilion {
  background-color: transparent;
  border: 3px solid var(--color-accent-vermilion);
  top: 20px;
  right: calc(50% - 185px);
  z-index: 3;
}

.venn-bg-circle.gold {
  background-color: transparent;
  border: 3px solid var(--color-accent-gold);
  bottom: 20px;
  left: calc(50% - 125px);
  z-index: 4;
}

/* テキストレイヤー（最前面） */
.venn-texts-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10; /* すべての円より前面に配置 */
  pointer-events: none;
}

.venn-text-block {
  width: 250px;
  height: 250px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: var(--color-primary-indigo); /* 文字色はインディゴで統一し、視認性を確保 */
  position: absolute;
  box-sizing: border-box;
  text-shadow: none;
  pointer-events: auto;
}

.venn-text-block.indigo {
  top: 20px;
  left: calc(50% - 185px);
  padding-right: 6.2rem; /* 4.5remから6.2remに増やして「伝統」を左側へ寄せる */
  padding-left: 1.5rem;
}

.venn-text-block.vermilion {
  top: 20px;
  right: calc(50% - 185px);
  padding-left: 6.2rem; /* 4.5remから6.2remに増やして「教育」を右側へ寄せる */
  padding-right: 1.5rem;
}

.venn-text-block.gold {
  bottom: 20px;
  left: calc(50% - 125px);
  padding-top: 5.5rem; /* 4.5remから5.5remに増やして「エンタメ」を下側へ寄せる */
  padding-bottom: 1.5rem;
}

.venn-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0;
  letter-spacing: 0.15em;
}

.venn-center-text {
  position: absolute;
  color: var(--color-primary-indigo);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.3rem; /* 1.4remから1.3remに微調整 */
  text-align: center;
  line-height: 1;
  white-space: nowrap; /* 強制的に1行表示にし、絶対に折り返さない */
  top: 190px; /* 交点中心である190pxに調整 */
  left: 50%;
  transform: translateX(-50%); /* 幅に依存せず常に中央寄せ */
  z-index: 12;
  pointer-events: auto;
}

/* 3カラムカード */
.three-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.pillar-card {
  background-color: var(--color-bg-base);
  border-radius: 12px;
  padding: 0 0 3rem 0; /* 上部の余白をなくして画像を配置 */
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
  border: 1px solid rgba(197, 160, 89, 0.15);
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.pillar-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-accent-gold);
  transition: var(--transition-smooth);
  z-index: 3;
}

.pillar-card:nth-child(2)::before {
  background: var(--color-accent-vermilion);
}

.pillar-card:nth-child(3)::before {
  background: var(--color-primary-indigo);
}

.pillar-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-premium);
  background-color: var(--color-bg-white);
  border-color: var(--color-accent-gold);
}

.pillar-image-box {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
}

.pillar-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.pillar-card:hover .pillar-image-box img {
  transform: scale(1.05);
}

.pillar-icon-box {
  width: 60px;
  height: 60px;
  margin: -30px auto 1.5rem; /* 画像の下端に半分重なるように配置 */
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-text-light);
  position: relative;
  z-index: 2;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.pillar-content {
  padding: 1.5rem 1.5rem 0;
}

.pillar-card:nth-child(1) .pillar-icon-box {
  background-color: var(--color-accent-gold);
}
.pillar-card:nth-child(2) .pillar-icon-box {
  background-color: var(--color-accent-vermilion);
}
.pillar-card:nth-child(3) .pillar-icon-box {
  background-color: var(--color-primary-indigo);
}

.pillar-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-primary-indigo);
}

.pillar-desc {
  font-size: 0.9rem;
  color: var(--color-text-dark);
  line-height: 1.7;
}

/* ==========================================
   Content Sections (3つの目玉コンテンツ)
   ========================================== */
.contents-section {
  padding: 8rem 1.5rem;
}

.contents-container {
  max-width: 1100px;
  margin: 0 auto;
}

.content-row {
  display: flex;
  align-items: center;
  gap: 4rem;
  margin-bottom: 8rem;
}

.content-row:last-child {
  margin-bottom: 0;
}

.content-row:nth-child(even) {
  flex-direction: row-reverse;
}

.content-media {
  flex: 1;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-premium);
  position: relative;
  aspect-ratio: 4 / 3;
}

.content-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.content-media:hover img {
  transform: scale(1.03);
}

.content-media.no-container {
  aspect-ratio: auto;
  box-shadow: none;
  background-color: transparent;
  border-radius: 0;
}

.content-media.no-container img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.content-info {
  flex: 1;
}

.content-num {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-accent-gold-light);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.content-info h4 {
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  color: var(--color-primary-indigo);
  letter-spacing: 0.02em;
  position: relative;
  padding-bottom: 0.8rem;
}

.content-info h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 2px;
  background-color: var(--color-accent-vermilion);
}

.content-row:nth-child(even) .content-info h4::after {
  left: auto;
  right: 0; /* 右寄せにする場合は後ほど調整、テキストアラインによる */
}

.content-info p {
  font-size: 0.98rem;
  color: var(--color-text-dark);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.content-list {
  list-style: none;
}

.content-list li {
  position: relative;
  padding-left: 1.8rem;
  margin-bottom: 0.8rem;
  font-size: 0.95rem;
}

.content-list li::before {
  content: "✦";
  position: absolute;
  left: 0.2rem;
  color: var(--color-accent-vermilion);
  font-weight: 700;
}

/* インタラクティブな古銭ステップ表示 */
.kosen-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.kosen-step-item {
  background-color: var(--color-bg-white);
  border: 1px solid rgba(197, 160, 89, 0.15);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition-smooth);
}

.kosen-step-item:hover {
  transform: translateX(5px);
  border-color: var(--color-accent-gold);
  box-shadow: var(--shadow-subtle);
}

.kosen-step-num {
  width: 32px;
  height: 32px;
  background-color: var(--color-accent-gold);
  color: var(--color-text-light);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.kosen-step-text strong {
  color: var(--color-primary-indigo);
  display: block;
  font-size: 0.95rem;
}

.kosen-step-text span {
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* ==========================================
   Event Details Section (開催概要)
   ========================================== */
.overview {
  padding: 8rem 1.5rem;
  background-color: var(--color-bg-white);
}

.overview-container {
  max-width: 800px;
  margin: 0 auto;
}

.table-wrapper {
  background-color: var(--color-bg-base);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-premium);
  border: 1px solid rgba(197, 160, 89, 0.15);
}

.overview-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.overview-table tr {
  border-bottom: 1px solid rgba(197, 160, 89, 0.1);
}

.overview-table tr:last-child {
  border-bottom: none;
}

.overview-table th, .overview-table td {
  padding: 1.5rem 2rem;
}

.overview-table th {
  width: 25%;
  background-color: var(--color-primary-indigo);
  color: var(--color-text-light);
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.1em;
  font-size: 1rem;
}

.overview-table td {
  font-size: 0.98rem;
  color: var(--color-text-dark);
}

.overview-table td a.text-link {
  color: var(--color-accent-vermilion);
  font-weight: 700;
  border-bottom: 1px solid var(--color-accent-vermilion);
}

.overview-table td a.text-link:hover {
  color: var(--color-primary-indigo);
  border-color: var(--color-primary-indigo);
}

/* 開催概要レイアウト調整 */
.overview-content-wrapper {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 2rem;
}

.table-wrapper {
  width: 100%;
}

.flyer-wrapper {
  background-color: var(--color-bg-base);
  border-radius: 12px;
  padding: 1.2rem;
  box-shadow: var(--shadow-premium);
  border: 1px solid rgba(197, 160, 89, 0.15);
  text-align: center;
  width: 100%;
  box-sizing: border-box;
}

.flyer-img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  display: block;
}

.flyer-img:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(10, 30, 54, 0.2);
}

.flyer-caption {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 0.8rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
}

/* チラシ用モーダル */
.flyer-modal-content {
  max-width: 90%;
  width: auto;
  max-height: 90vh;
  padding: 1.5rem;
  background-color: var(--color-bg-base);
  display: flex;
  justify-content: center;
  align-items: center;
}

.flyer-large-img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.modal-overlay-close {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: default;
  z-index: 0;
}

/* モーダルコンテンツが前面に来るようにする */
.modal-content {
  z-index: 1;
}

@media (min-width: 768px) {
  .overview-container {
    max-width: 1000px;
  }
  .overview-content-wrapper {
    flex-direction: row;
    align-items: flex-start;
    gap: 3rem;
  }
  .table-wrapper {
    flex: 1.2;
  }
  .flyer-wrapper {
    flex: 0.8;
  }
}

/* ==========================================
   Video Gallery Section (前回の様子)
   ========================================== */
.gallery {
  padding: 8rem 1.5rem;
  background-color: var(--color-primary-indigo);
  color: var(--color-text-light);
  position: relative;
}

.gallery .section-title {
  color: var(--color-text-light);
}

.gallery-container {
  max-width: 900px;
  margin: 0 auto;
}

.gallery-desc {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
  font-size: 1.05rem;
  color: #CBD5E1;
  line-height: 1.8;
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  border: 3px solid rgba(197, 160, 89, 0.4);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* 新規フォトギャラリースタイル */
.gallery-photos-title {
  text-align: center;
  font-size: 1.5rem;
  margin: 5rem 0 2.5rem;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
  font-family: var(--font-heading);
  position: relative;
}

.gallery-photos-title::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: var(--color-accent-gold);
  margin: 0.8rem auto 0;
}

.gallery-photos-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.gallery-photo-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  border: 2px solid rgba(197, 160, 89, 0.2);
  transition: var(--transition-smooth);
  cursor: pointer;
}

.gallery-photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.gallery-photo-item:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent-gold);
  box-shadow: 0 12px 28px rgba(197, 160, 89, 0.3);
}

.gallery-photo-item:hover img {
  transform: scale(1.08);
}

/* レスポンシブ調整 */
@media (max-width: 991px) {
  .gallery-photos-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.2rem;
  }
}

@media (max-width: 480px) {
  .gallery-photos-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* ==========================================
   Producer Section (プロデューサー紹介)
   ========================================== */
.producer {
  padding: 8rem 1.5rem;
}

.producer-container {
  max-width: 1000px;
  margin: 0 auto;
  background-color: var(--color-bg-white);
  border-radius: 20px;
  padding: 4rem;
  box-shadow: var(--shadow-premium);
  border: 1px solid rgba(197, 160, 89, 0.15);
  display: flex;
  gap: 4rem;
  align-items: flex-start;
}

.producer-photo {
  flex: 0 0 320px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-premium);
  border: 4px solid var(--color-bg-base);
}

.producer-photo img {
  width: 100%;
  height: auto;
}

.producer-info {
  flex: 1;
}

.producer-role {
  font-size: 0.9rem;
  color: var(--color-accent-gold);
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.producer-name {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--color-primary-indigo);
}

.producer-name span {
  font-size: 0.95rem;
  font-family: var(--font-body);
  color: var(--color-muted);
  margin-left: 1rem;
}

.producer-message {
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.8;
  color: var(--color-primary-ink);
  margin-bottom: 2rem;
  padding-left: 1rem;
  border-left: 3px solid var(--color-accent-vermilion);
}

.producer-bio h5 {
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
  color: var(--color-primary-indigo);
  letter-spacing: 0.05em;
}

.producer-bio p {
  font-size: 0.95rem;
  color: var(--color-text-dark);
  line-height: 1.8;
}

/* ==========================================
   Contact Section (お問い合わせフォーム)
   ========================================== */
.contact {
  padding: 8rem 1.5rem;
  background-color: var(--color-bg-white);
  border-top: 1px solid rgba(197, 160, 89, 0.15);
}

.contact-container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contact-info-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.contact-info-block h3 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

.contact-info-block p {
  font-size: 0.95rem;
  color: var(--color-text-dark);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.contact-details {
  list-style: none;
  width: 100%;
  max-width: 450px;
  margin: 2rem auto 0;
}

.contact-details li {
  margin-bottom: 1.8rem;
  font-size: 0.95rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-details span.label {
  font-size: 0.8rem;
  color: var(--color-muted);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

.contact-details span.value {
  font-weight: 700;
  color: var(--color-primary-indigo);
  font-size: 1.1rem;
}



/* ==========================================
   Footer
   ========================================== */
footer {
  background-color: var(--color-primary-ink);
  color: rgba(255, 255, 255, 0.6);
  padding: 4rem 1.5rem;
  font-size: 0.85rem;
  border-top: 3px solid var(--color-accent-gold);
}

.footer-container {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

.footer-logo {
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
}

.footer-logo-img {
  height: 60px;
  width: auto;
  display: block;
  filter: invert(1) brightness(1.2);
}

.footer-links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-links a:hover {
  color: var(--color-accent-gold-light);
}

.copyright {
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

/* ==========================================
   Mobile Sticky CTA (追従ボタン)
   ========================================== */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(250, 246, 240, 0.95);
  backdrop-filter: blur(8px);
  padding: 0.8rem 1.5rem;
  box-shadow: 0 -5px 20px rgba(10, 30, 54, 0.1);
  border-top: 1px solid rgba(197, 160, 89, 0.2);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 999;
  transform: translateY(100%);
  transition: transform 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.sticky-cta.active {
  display: flex;
  transform: translateY(0);
}

.sticky-cta .btn-premium {
  width: 100%;
  max-width: 450px;
  padding: 0.9rem 2rem;
  font-size: 0.98rem;
  text-align: center;
}

/* ==========================================
   Modal / Toast (準備中モーダル・トースト)
   ========================================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(10, 30, 54, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.modal.active,
.modal:target {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background-color: var(--color-bg-base);
  border: 2px solid var(--color-accent-gold);
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  padding: 3rem 2rem;
  position: relative;
  text-align: center;
  box-shadow: var(--shadow-premium);
  transform: scale(0.9);
  transition: var(--transition-smooth);
}

.modal.active .modal-content,
.modal:target .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-primary-indigo);
}

.modal-icon {
  font-size: 3rem;
  color: var(--color-accent-vermilion);
  margin-bottom: 1.5rem;
}

.modal-content h4 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.modal-content p {
  font-size: 0.95rem;
  color: var(--color-text-dark);
  margin-bottom: 2rem;
}

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.menu-toggle-checkbox {
  display: none;
}

.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: none;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   Responsive Design (モバイルファースト調整)
   ========================================== */

/* タブレット・PC向けスタイル (768px以上) */
@media (min-width: 768px) {
  .section-title {
    font-size: 2.5rem;
  }
  
  .hero h2 {
    font-size: 4rem;
  }
  
  .concept-text {
    font-size: 1.25rem;
  }
  
  .overview-table th {
    font-size: 1.1rem;
  }
}

/* PC向け詳細スタイル (992px以上) */
/* 中間解像度（768px〜1024px）でのヘッダーメニュー崩れ防止調整 */
@media (min-width: 768px) and (max-width: 1024px) {
  nav ul {
    gap: 1rem;
  }
  nav a {
    font-size: 0.85rem;
  }
  .nav-cta-btn {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
  }
}

@media (max-width: 991px) {
  .three-pillars {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .content-row {
    flex-direction: column !important;
    gap: 2rem;
  }
  
  .content-media {
    width: 100%;
  }

  .producer-container {
    flex-direction: column;
    padding: 2.5rem;
    gap: 2rem;
  }

  .producer-photo {
    width: 100%;
    flex: none;
    max-width: 280px;
    margin: 0 auto;
  }

  /* モバイル追従CTAの常時表示 */
  .sticky-cta {
    display: flex;
    transform: translateY(0);
  }
}

/* モバイル向けスタイル（767px以下）でのメニュー調整 */
@media (max-width: 767px) {
  nav {
    position: fixed;
    top: 60px;
    right: -100%;
    width: 280px;
    height: calc(100vh - 60px);
    background-color: var(--color-bg-base);
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    transition: var(--transition-smooth);
    padding: 3rem 2rem;
    z-index: 998;
  }
  
  nav.active {
    right: 0;
  }
  
  nav ul {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .menu-toggle {
    display: block;
  }
  
  /* ハンバーガーメニューがアクティブなときの変形 */
  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* CSSのみのハンバーガーメニュー動作 */
  .menu-toggle-checkbox:checked ~ nav {
    right: 0;
  }
  
  .menu-toggle-checkbox:checked ~ .menu-toggle span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .menu-toggle-checkbox:checked ~ .menu-toggle span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle-checkbox:checked ~ .menu-toggle span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

/* ==========================================
   Vision & Story Section (ビジョンとストーリー)
   ========================================== */
.vision-section {
  padding: 8rem 1.5rem;
  background-color: var(--color-bg-white);
}

.vision-container {
  max-width: 1100px;
  margin: 0 auto;
}

/* 比較対比カード */
.vision-comparison {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  margin-bottom: 6rem;
}

.comparison-card {
  background-color: var(--color-bg-base);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-premium);
  border: 1px solid rgba(197, 160, 89, 0.15);
  display: flex;
  flex-direction: column;
}

.comparison-img-wrapper {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.comparison-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.comparison-card:hover .comparison-img-wrapper img {
  transform: scale(1.05);
}

.badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-light);
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  z-index: 2;
}

.badge-before {
  background-color: var(--color-muted);
}

.badge-after {
  background: linear-gradient(135deg, var(--color-accent-vermilion), #b22222);
}

.comparison-body {
  padding: 2rem;
}

.comparison-body h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.comparison-body h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
}

.before .comparison-body h3::after {
  background-color: var(--color-muted);
}

.after .comparison-body h3::after {
  background-color: var(--color-accent-vermilion);
}

.comparison-body p {
  font-size: 0.95rem;
  color: var(--color-text-dark);
  line-height: 1.8;
}

/* 現代の城下町 */
.vision-castle-town {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  align-items: center;
  margin-top: 4rem;
  padding: 3rem 2rem;
  background-color: var(--color-bg-base);
  border-radius: 16px;
  border: 1px solid rgba(197, 160, 89, 0.15);
  box-shadow: var(--shadow-subtle);
}

.castle-town-content {
  text-align: center;
}

.castle-town-content h3 {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  color: var(--color-primary-indigo);
}

.castle-town-content p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text-dark);
}

.castle-town-graphic {
  width: 100%;
  max-width: 550px;
  background: #ffffff;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-premium);
}

.graphic-img {
  width: 100%;
  height: auto;
  border-radius: 6px;
}

/* ==========================================
   Community Section (コミュニティセクション)
   ========================================== */
.community-section {
  padding: 8rem 1.5rem;
  background-color: var(--color-bg-white);
}

.community-container {
  max-width: 1100px;
  margin: 0 auto;
}

.community-story-wrapper {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  align-items: center;
  margin-bottom: 6rem;
}

.community-text {
  text-align: center;
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--color-text-dark);
}

.community-media {
  width: 100%;
  max-width: 600px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-premium);
  border: 2px solid var(--color-accent-gold-light);
}

.community-img {
  width: 100%;
  height: auto;
  transition: var(--transition-smooth);
  display: block;
}

.community-media:hover .community-img {
  transform: scale(1.03);
}

/* 次のステップアクション */
.next-step-box {
  margin-top: 5rem;
  padding: 4rem 2rem;
  background-color: var(--color-bg-base);
  border-radius: 16px;
  border: 1px solid rgba(197, 160, 89, 0.15);
  box-shadow: var(--shadow-subtle);
}

.next-step-intro {
  text-align: center;
  margin-bottom: 3.5rem;
}

.next-step-intro h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.next-step-intro p {
  color: var(--color-muted);
  font-size: 1.05rem;
}

.action-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.action-card {
  background-color: var(--color-bg-white);
  padding: 2.5rem 1.5rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: var(--shadow-subtle);
  border: 1px solid rgba(197, 160, 89, 0.1);
  transition: var(--transition-smooth);
}

.action-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-premium);
  border-color: var(--color-accent-gold);
}

.action-icon {
  font-size: 2.5rem;
  color: var(--color-accent-vermilion);
  margin-bottom: 1.5rem;
  height: 70px;
  width: 70px;
  background-color: rgba(230, 59, 46, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-left: auto;
  margin-right: auto;
  transition: var(--transition-smooth);
}

.action-card:hover .action-icon {
  background-color: var(--color-accent-vermilion);
  color: var(--color-text-light);
}

.action-card h4 {
  font-size: 1.25rem;
  margin-bottom: 0.8rem;
  color: var(--color-primary-indigo);
}

.action-card p {
  font-size: 0.95rem;
  color: var(--color-text-dark);
}

/* ==========================================
   PC向けレイアウト (768px以上)
   ========================================== */
@media (min-width: 768px) {
  .vision-comparison {
    flex-direction: row;
  }

  .comparison-card {
    flex: 1;
  }

  .comparison-img-wrapper {
    height: 300px;
  }

  .vision-castle-town {
    flex-direction: row;
    padding: 4rem 3rem;
  }

  .castle-town-content {
    flex: 1;
    text-align: left;
  }

  .castle-town-graphic {
    flex: 1;
  }

  .community-story-wrapper {
    flex-direction: row-reverse;
  }

  .community-text {
    flex: 1;
    text-align: left;
  }

  .community-media {
    flex: 1.2;
  }

  .action-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .action-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ==========================================
   Subpage Headers (下層ページ用共通ヘッダー)
   ========================================== */
.page-header {
  position: relative;
  padding: 10rem 1.5rem 6rem;
  background-color: var(--color-primary-indigo);
  color: var(--color-text-light);
  text-align: center;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(rgba(197, 160, 89, 0.08) 1px, transparent 0);
  background-size: 24px 24px;
  opacity: 0.5;
  z-index: 1;
}

.page-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: linear-gradient(to top, var(--color-bg-base) 0%, transparent 100%);
  z-index: 2;
}

.page-header-container {
  position: relative;
  z-index: 3;
}

.page-header h2 {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  color: var(--color-accent-gold-light);
  margin-bottom: 0.8rem;
  letter-spacing: 0.15em;
}

.page-header-subtitle {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* アクティブリンク表示 */
nav a.active {
  color: var(--color-accent-vermilion);
  font-weight: 700;
}

nav a.active::after {
  width: 100%;
}

/* ==========================================
   Navigation Cards Section (各ページへの案内)
   ========================================== */
.nav-cards-section {
  padding: 8rem 1.5rem;
  background-color: var(--color-bg-base);
  position: relative;
}

.nav-cards-container {
  max-width: 1200px;
  margin: 0 auto;
}

.nav-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 3rem;
  margin-top: 4rem;
}

.nav-card {
  background: var(--color-bg-white);
  border: 1px solid rgba(197, 160, 89, 0.15);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), 
              box-shadow 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), 
              border-color 0.4s ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-accent-gold);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 25px rgba(197, 160, 89, 0.15);
}

.nav-card-img-wrapper {
  height: 220px;
  overflow: hidden;
  position: relative;
}

.nav-card-img-wrapper::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(10, 14, 25, 0.8) 0%, transparent 100%);
  z-index: 1;
}

.nav-card-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.nav-card:hover .nav-card-img-wrapper img {
  transform: scale(1.05);
}

.nav-card-body {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  z-index: 2;
  position: relative;
}

.nav-card-body h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-primary-indigo);
  margin-bottom: 1.2rem;
  letter-spacing: 0.05em;
}

.nav-card-body p {
  color: var(--color-text-dark);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
  flex-grow: 1;
}

.nav-card-body .btn-premium {
  align-self: flex-start;
  width: 100%;
  text-align: center;
}

/* ==========================================
   Support Products Section (支援商品)
   ========================================== */
.support-section {
  padding: 6rem 1.5rem 8rem;
  background-color: var(--color-bg-base);
}

.support-container {
  max-width: 1200px;
  margin: 0 auto;
}

.support-intro {
  text-align: center;
  max-width: 700px;
  margin: -2.5rem auto 3.5rem;
  color: var(--color-text-dark);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

@media (max-width: 767px) {
  .support-grid {
    grid-template-columns: 1fr;
  }
}

.support-card {
  background: var(--color-bg-white);
  border: 1px solid rgba(197, 160, 89, 0.15);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), 
              box-shadow 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), 
              border-color 0.4s ease;
  box-shadow: var(--shadow-subtle);
}

.support-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-accent-gold);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15), 0 0 20px rgba(197, 160, 89, 0.1);
}

.support-img-wrapper {
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.support-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.support-card:hover .support-img-wrapper img {
  transform: scale(1.05);
}

.support-body {
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.support-body h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-primary-indigo);
  margin-bottom: 1.5rem;
  line-height: 1.5;
  flex-grow: 1;
}

.support-body .btn-premium {
  width: 100%;
  text-align: center;
}

/* ==========================================
   Sponsor & Partners Section (協賛・賛助)
   ========================================== */
.sponsor-section {
  padding: 6rem 1.5rem 8rem;
  background-color: var(--color-bg-base);
}

.sponsor-container {
  max-width: 1200px;
  margin: 0 auto;
}

.sponsor-banner-wrapper {
  max-width: 1000px;
  margin: 0 auto 5rem;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-premium);
  border: 1px solid rgba(197, 160, 89, 0.15);
}

.sponsor-banner-img {
  width: 100%;
  height: auto;
  display: block;
}

.sponsor-grid-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
}

.sponsor-group {
  background: var(--color-bg-white);
  border: 1px solid rgba(197, 160, 89, 0.15);
  border-radius: 20px;
  padding: 4rem 3rem;
  box-shadow: var(--shadow-subtle);
}

.sponsor-group.card-premium {
  border: 2px solid var(--color-accent-gold);
  background: radial-gradient(circle at top right, rgba(197, 160, 89, 0.03), transparent 70%), var(--color-bg-white);
}

.sponsor-group h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-primary-indigo);
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
  letter-spacing: 0.1em;
}

.sponsor-rank {
  margin-bottom: 3.5rem;
}

.sponsor-rank:last-child {
  margin-bottom: 0;
}

.sponsor-rank h4 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-accent-gold);
  border-bottom: 1px solid rgba(197, 160, 89, 0.3);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
  letter-spacing: 0.15em;
  font-weight: 700;
}

.sponsor-names-flex {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem 2rem;
  align-items: center;
}

.sponsor-item {
  font-size: 1rem;
  color: var(--color-text-dark);
  line-height: 1.6;
}

.sponsor-item strong {
  font-size: 0.85rem;
  color: var(--color-muted);
  font-weight: 500;
  display: block;
  margin-bottom: 0.1rem;
}

/* 奉行やスタッフなどのシンプルな一覧用 */
.rank-bugyo .sponsor-item,
.font-small .sponsor-item {
  background-color: rgba(10, 30, 54, 0.03);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.9rem;
  border: 1px solid rgba(197, 160, 89, 0.1);
}

.sponsor-block {
  margin-bottom: 4rem;
  border-bottom: 1px dashed rgba(197, 160, 89, 0.2);
  padding-bottom: 4rem;
}

.sponsor-block:last-child {
  margin-bottom: 0;
  border-bottom: none;
  padding-bottom: 0;
}

.sponsor-block h3 {
  font-size: 1.4rem;
  margin-bottom: 2rem;
}

.sponsor-vertical-list {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  max-width: 900px;
  margin: 0 auto;
}

.list-item-row {
  display: flex;
  border-bottom: 1px solid rgba(197, 160, 89, 0.1);
  padding-bottom: 0.8rem;
  align-items: baseline;
}

.list-item-row:last-child {
  border-bottom: none;
}

.role-lbl {
  flex: 0 0 280px;
  font-weight: 700;
  color: var(--color-accent-gold);
  font-size: 0.95rem;
}

.names-lbl {
  flex: 1;
  color: var(--color-text-dark);
  font-size: 0.95rem;
}

.names-lbl strong {
  font-size: 0.85rem;
  color: var(--color-muted);
  font-weight: 500;
}

.flex-row-info {
  display: flex;
  gap: 4rem;
}

.flex-row-info > div {
  flex: 1;
}

.flex-row-info h3 {
  margin-bottom: 1rem;
}

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

.justify-center {
  justify-content: center;
}

.gap-4 {
  gap: 1rem;
}

/* スマホ表示のレスポンシブ対応 */
@media (max-width: 767px) {
  .sponsor-group {
    padding: 2.5rem 1.5rem;
  }
  
  .list-item-row {
    flex-direction: column;
    gap: 0.4rem;
  }
  
  .role-lbl {
    flex: none;
  }
  
  .flex-row-info {
    flex-direction: column;
    gap: 2rem;
  }
}