/* =============================================================================
   異世界転生神社 - デザインシステム & スタイルシート (清涼和モダン・ライトスタイル)
   ============================================================================= */

/* 変数定義 */
:root {
  --bg-color: #f8f6f0;                     /* 清らかな和紙・漆喰風オフホワイト */
  --bg-card: #ffffff;                      /* 清潔感のある白カード */
  --bg-card-subtle: #f2ede4;               /* 温かみのある和風ベージュ */
  --bg-card-hover: #ffffff;
  --border-color: rgba(180, 140, 40, 0.25); /* 上品な淡い金色の境界線 */
  --border-glow: rgba(217, 56, 58, 0.2);
  --text-main: #242220;                    /* 墨色 (高い視認性) */
  --text-sub: #545048;                     /* 濃い和墨グレー */
  --text-muted: #858076;
  --color-primary: #d9383a;                /* 伝統的な神社朱赤 */
  --color-primary-hover: #b8282a;
  --color-gold: #b38b25;                   /* 和の黄金 */
  --color-gold-light: #8c6a17;
  --color-glow: rgba(217, 56, 58, 0.12);
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Outfit', sans-serif;
  --header-height: 72px;
}

/* 基本リセット */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

body {
  position: relative;
  min-height: 100vh;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

/* 背景光エフェクト（明るく爽やかな神社境内） */
.bg-glow {
  position: fixed;
  top: -15%;
  left: 20%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(217, 56, 58, 0.05) 0%, rgba(212, 175, 55, 0.04) 40%, rgba(248, 246, 240, 0) 70%);
  z-index: -1;
  pointer-events: none;
  filter: blur(80px);
}

/* コンテナ */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* セクション共通 */
.section {
  padding: 2.5rem 0;
}

.section-card {
  margin: 1.5rem auto 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(40, 30, 20, 0.05);
  padding: 3.5rem 2.5rem;
}

.recommender-section-box {
  border-color: rgba(179, 139, 37, 0.4);
  background: #fdfbf7;
  box-shadow: 0 10px 40px rgba(179, 139, 37, 0.08);
}

.recommender-section-desc {
  text-align: center;
  color: var(--text-sub);
  max-width: 700px;
  margin: 0 auto 1.5rem;
  font-size: 0.95rem;
  line-height: 1.8;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  text-align: center;
  letter-spacing: 0.1em;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.section-subtitle {
  text-align: center;
  color: var(--color-gold);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.2em;
  margin-bottom: 1.5rem;
}

.divider {
  display: flex;
  justify-content: center;
  margin: 1.5rem 0 3rem;
}

.divider span {
  width: 70px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
}

/* アナウンスメントバー (最上部ニュース告知) */
.announcement-bar {
  background: linear-gradient(90deg, #b8282a 0%, #d9383a 50%, #b38b25 100%);
  color: #ffffff;
  font-size: 0.88rem;
  padding: 0.5rem 1rem;
  text-align: center;
  position: relative;
  z-index: 1002;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.announcement-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.announcement-badge {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.35);
  padding: 0.15rem 0.65rem;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.announcement-text {
  font-weight: 500;
}

.announcement-text strong {
  color: #fff8d6;
  font-size: 0.95rem;
  font-family: var(--font-serif);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.announcement-link {
  color: #ffffff !important;
  text-decoration: none;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.22);
  padding: 0.2rem 0.7rem;
  border-radius: 4px;
  transition: all 0.25 ease;
  font-size: 0.8rem;
}

.announcement-link:hover {
  background: #ffffff;
  color: var(--color-primary) !important;
}

.nav-c108-link {
  color: var(--color-primary) !important;
  font-weight: 700 !important;
  background: rgba(217, 56, 58, 0.08);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  border: 1px solid rgba(217, 56, 58, 0.2);
}

.nav-c108-link:hover {
  background: var(--color-primary) !important;
  color: #ffffff !important;
}

/* ヘッダー */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(248, 246, 240, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.logo {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.35rem;
  letter-spacing: 0.15em;
  color: var(--text-main);
  text-decoration: none;
  background: linear-gradient(135deg, var(--text-main) 30%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--text-sub);
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.site-nav a:hover {
  color: var(--color-primary);
}

.btn-header-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 0.5rem 1.2rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem !important;
  border: 1px solid rgba(217, 56, 58, 0.2);
  transition: all 0.3s ease !important;
  box-shadow: 0 2px 10px rgba(217, 56, 58, 0.2);
}

.btn-header-cta:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 15px rgba(217, 56, 58, 0.35);
  transform: translateY(-1px);
}

/* モバイル用ナビボタン */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 1001;
}

.mobile-nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all 0.3s ease;
  position: absolute;
}

.mobile-nav-toggle span:nth-child(1) { top: 0; }
.mobile-nav-toggle span:nth-child(2) { top: 10px; }
.mobile-nav-toggle span:nth-child(3) { top: 20px; }

.mobile-nav-toggle.active span:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}
.mobile-nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-nav-toggle.active span:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* ヒーローセクション */
.hero {
  min-height: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--header-height) + 2rem) 1rem 1.5rem;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-content {
  text-align: left;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  padding: 0.25rem 0.8rem;
  border-radius: 20px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.15em;
  background: rgba(217, 56, 58, 0.05);
}

.hero-main-title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: 0.08em;
  margin-bottom: 0.8rem;
  line-height: 1.25;
  color: var(--text-main);
}

.hero-sub-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.2rem, 2.5vw, 1.7rem);
  color: var(--color-gold-light);
  margin-bottom: 1.8rem;
  line-height: 1.4;
}

.hero-description {
  font-size: 1rem;
  color: var(--text-sub);
  margin-bottom: 2.5rem;
  line-height: 2;
}

.cta-group {
  display: flex;
  gap: 1.2rem;
  align-items: center;
  flex-wrap: wrap;
}

.btn-primary {
  text-decoration: none;
  color: #fff;
  background: var(--color-primary);
  padding: 0.9rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.05em;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
  box-shadow: 0 4px 18px rgba(217, 56, 58, 0.25);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(217, 56, 58, 0.4);
}

.btn-secondary {
  text-decoration: none;
  color: var(--text-main);
  padding: 0.9rem 1.8rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid var(--border-color);
  background: #ffffff;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.btn-secondary:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: rgba(217, 56, 58, 0.03);
  transform: translateY(-2px);
}

/* ヒーロービジュアル / 重ねカードファン表示 */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem 0;
}

.cards-stack-wrapper {
  position: relative;
  width: 320px;
  height: 420px;
  perspective: 1000px;
  margin: 0 auto;
}

.card-item {
  position: absolute;
  width: 230px;
  border-radius: 12px;
  box-shadow: -4px 10px 28px rgba(30, 20, 10, 0.15), 0 2px 8px rgba(179, 139, 37, 0.2);
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
  background: #ffffff;
  border: 1px solid rgba(180, 140, 40, 0.3);
}

.card-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 11px;
}

/* 浮遊常時ゆらぎアニメーション (Ambient Floating Animation) */
@keyframes floatCard1 {
  0%, 100% { transform: rotate(-14deg) translateY(0px); }
  50% { transform: rotate(-11deg) translateY(-10px); }
}

@keyframes floatCard2 {
  0%, 100% { transform: rotate(-5deg) translateY(0px); }
  50% { transform: rotate(-7deg) translateY(-8px); }
}

@keyframes floatCard3 {
  0%, 100% { transform: rotate(4deg) translateY(0px); }
  50% { transform: rotate(7deg) translateY(-12px); }
}

@keyframes floatCard4 {
  0%, 100% { transform: rotate(14deg) translateY(0px); }
  50% { transform: rotate(11deg) translateY(-7px); }
}

/* 各カードの立体的な角度、重なり順、常時ゆらゆら浮遊効果 */
.card-item-1 {
  top: 10px;
  left: 0px;
  z-index: 1;
  animation: floatCard1 4.5s ease-in-out infinite;
}

.card-item-2 {
  top: 35px;
  left: 25px;
  z-index: 2;
  animation: floatCard2 5.1s ease-in-out infinite 0.5s;
}

.card-item-3 {
  top: 60px;
  left: 50px;
  z-index: 3;
  animation: floatCard3 4.2s ease-in-out infinite 1.0s;
}

.card-item-4 {
  top: 85px;
  left: 75px;
  z-index: 4;
  animation: floatCard4 5.6s ease-in-out infinite 1.5s;
}

/* ホバー時のさらなる広がりの演出 */
.cards-stack-wrapper:hover .card-item-1 {
  animation-play-state: paused;
  transform: rotate(-22deg) translate(-25px, -15px);
  box-shadow: -8px 16px 36px rgba(30, 20, 10, 0.2);
}

.cards-stack-wrapper:hover .card-item-2 {
  animation-play-state: paused;
  transform: rotate(-9deg) translate(-10px, -8px);
}

.cards-stack-wrapper:hover .card-item-3 {
  animation-play-state: paused;
  transform: rotate(9deg) translate(10px, 5px);
}

.cards-stack-wrapper:hover .card-item-4 {
  animation-play-state: paused;
  transform: rotate(22deg) translate(25px, 15px);
  box-shadow: 10px 20px 40px rgba(30, 20, 10, 0.22);
}

@media (max-width: 480px) {
  .cards-stack-wrapper {
    width: 270px;
    height: 350px;
  }
  .card-item {
    width: 190px;
  }
  .card-item-1 { top: 0px; left: 0px; }
  .card-item-2 { top: 25px; left: 20px; }
  .card-item-3 { top: 50px; left: 40px; }
  .card-item-4 { top: 75px; left: 60px; }
}

/* 意思表示カードとは セクション */
.concept-box {
  max-width: 850px;
  margin: 0 auto;
  text-align: center;
}

.concept-lead {
  font-size: 1.15rem;
  line-height: 2.2;
  color: var(--text-sub);
  margin-bottom: 2rem;
}

.concept-highlight {
  background: rgba(217, 56, 58, 0.06);
  border-left: 4px solid var(--color-primary);
  padding: 1.5rem 2rem;
  border-radius: 0 12px 12px 0;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--text-main);
  font-weight: 600;
  margin: 2rem 0;
  text-align: left;
}

.concept-notes {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
}

.note-item {
  font-size: 0.9rem;
  color: var(--text-sub);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.note-item span {
  color: var(--color-primary);
  font-weight: 700;
}

/* なぜ事前に考えるのか セクション */
.why-prepare-text {
  max-width: 800px;
  margin: 0 auto 3rem;
  text-align: center;
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 2.2;
}

.step-flow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.flow-step-card {
  background: var(--bg-card-subtle);
  border: 1px solid rgba(180, 140, 40, 0.15);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}

.flow-step-card:hover {
  border-color: var(--color-gold);
  background: #ffffff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
  transform: translateY(-4px);
}

.flow-num {
  display: inline-block;
  width: 36px;
  height: 36px;
  line-height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  margin-bottom: 1rem;
}

.flow-step-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  color: var(--text-main);
}

.flow-step-card p {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.8;
}

.why-prepare-catch {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-primary);
  margin-top: 3rem;
  font-weight: 600;
}

/* カードに記録できること セクション */
.record-fields-container {
  max-width: 900px;
  margin: 0 auto;
}

.record-fields-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.2rem;
}

.field-card {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 10px;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: transform 0.3s ease;
}

.field-card:hover {
  transform: translateY(-2px);
  background: #ffffff;
}

.field-icon {
  font-size: 1.8rem;
  line-height: 1;
}

.field-card h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--text-main);
  margin-bottom: 0.3rem;
}

.field-card p {
  font-size: 0.85rem;
  color: var(--text-sub);
}

/* なぜ携帯するのか セクション */
.why-carry-box {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.why-carry-text {
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 2.2;
  margin-bottom: 2rem;
}

.why-carry-quote {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-primary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem 0;
  margin-top: 2rem;
  font-weight: 600;
}

/* 携帯方法 セクション */
.methods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.method-card {
  background: var(--bg-card-subtle);
  border: 1px solid rgba(180, 140, 40, 0.15);
  border-radius: 12px;
  padding: 1.8rem;
  transition: all 0.3s ease;
}

.method-card.featured {
  border-color: var(--color-primary);
  background: #ffffff;
  box-shadow: 0 6px 20px rgba(217, 56, 58, 0.08);
  position: relative;
}

.method-card.featured::before {
  content: 'メイン推奨';
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.1rem 0.6rem;
  border-radius: 10px;
}

.method-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-gold);
  background: #ffffff;
}

.method-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.method-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.method-copy {
  font-size: 0.88rem;
  color: var(--color-gold);
  font-family: var(--font-serif);
  font-weight: 600;
  margin-bottom: 0.8rem;
}

.method-card p {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.7;
}

.carry-cautions {
  margin-top: 3rem;
  background: var(--bg-card-subtle);
  border: 1px dashed var(--border-color);
  padding: 1.5rem 2rem;
  border-radius: 10px;
}

.carry-cautions h4 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  margin-bottom: 0.8rem;
  font-size: 1rem;
}

.carry-cautions ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.8rem;
}

.carry-cautions li {
  font-size: 0.85rem;
  color: var(--text-sub);
  position: relative;
  padding-left: 1.2rem;
}

.carry-cautions li::before {
  content: '・';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
}

/* 使い方の流れ セクション */
.howto-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  margin-bottom: 3rem;
}

.howto-card {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.8rem 1.2rem;
  text-align: center;
}

.howto-step-no {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  color: var(--color-gold);
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
}

.howto-card h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--text-main);
  margin-bottom: 0.8rem;
}

.howto-card p {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* よくある質問 FAQ セクション */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item.active {
  border-color: var(--color-primary);
  background: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 1.2rem 1.5rem;
  color: var(--text-main);
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '＋';
  font-size: 1.2rem;
  color: var(--color-primary);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-question::after {
  content: '－';
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 1.5rem;
  color: var(--text-sub);
  font-size: 0.92rem;
  line-height: 1.9;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 1.5rem 1.5rem;
  border-top: 1px dashed rgba(180, 140, 40, 0.2);
}

/* 最終CTA */
.final-cta-box {
  text-align: center;
  max-width: 750px;
  margin: 0 auto;
  background: #ffffff;
}

.final-cta-box h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  color: var(--text-main);
  margin-bottom: 1.5rem;
}

.final-cta-box p {
  font-size: 1.05rem;
  color: var(--text-sub);
  line-height: 2;
  margin-bottom: 2.5rem;
}

.final-cta-catch {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-top: 2.5rem;
  letter-spacing: 0.1em;
}

/* 注意書き / 免責事項 */
.disclaimer {
  max-width: 900px;
  margin: 4rem auto 2rem;
  padding: 1.5rem 2rem;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.8;
  text-align: center;
}

/* フッター */
.site-footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 1.5rem 2rem;
  background: #eae5db;
  color: var(--text-sub);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-brand {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.2rem;
  color: var(--text-main);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-sub);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--color-primary);
}

.copyright {
  width: 100%;
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* レスポンシブ対応 */
@media (max-width: 868px) {
  .hero {
    padding: calc(var(--header-height) + 1.2rem) 1rem 0.5rem;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
    text-align: center;
  }
  .cards-stack-wrapper {
    width: 270px;
    height: 310px;
  }
  .hero-content {
    text-align: center;
  }
  .cta-group {
    justify-content: center;
  }
  .step-flow-grid {
    grid-template-columns: 1fr;
  }
  .howto-flow {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  .mobile-nav-toggle {
    display: block;
  }
  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(248, 246, 240, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-150%);
    transition: transform 0.4s ease;
    z-index: 999;
  }
  .site-nav.active {
    transform: translateY(0);
  }
  .section {
    padding: 1.5rem 0;
  }
  .section-card {
    margin: 1rem auto 2rem;
    padding: 2.2rem 1.2rem;
  }
  .howto-flow {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* =============================================================================
   C108 出展情報セクション スタイル
   ============================================================================= */
.c108-section {
  padding-top: 1rem;
  padding-bottom: 2rem;
}

.c108-box {
  background: linear-gradient(135deg, #ffffff 0%, #fffdf8 100%);
  border: 2px solid var(--color-gold);
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 35px rgba(179, 139, 37, 0.12);
  border-radius: 16px;
}

.c108-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold), var(--color-primary));
}

.c108-header {
  text-align: center;
  margin-bottom: 2rem;
}

.c108-tag {
  display: inline-block;
  color: var(--color-primary);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  background: rgba(217, 56, 58, 0.08);
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  border: 1px solid rgba(217, 56, 58, 0.2);
  margin-bottom: 0.6rem;
}

.c108-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  color: var(--text-main);
  margin-bottom: 0.4rem;
}

.c108-lead {
  color: var(--text-sub);
  font-size: 0.95rem;
}

.c108-details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.c108-info-card {
  background: #fcfbfa;
  border: 1px solid rgba(180, 140, 40, 0.25);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.c108-card-heading {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--text-main);
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
  margin-bottom: 1.2rem;
}

.c108-info-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.c108-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px dashed rgba(0, 0, 0, 0.08);
}

.c108-info-row dt {
  color: var(--text-sub);
  font-size: 0.9rem;
  font-weight: 500;
}

.c108-info-row dd {
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.95rem;
}

.c108-info-row.highlight-row {
  background: rgba(217, 56, 58, 0.06);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid rgba(217, 56, 58, 0.25);
}

.space-number {
  color: var(--color-primary) !important;
  font-size: 1.35rem !important;
  font-family: var(--font-serif);
  font-weight: 900 !important;
  letter-spacing: 0.05em;
}

.goods-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.goods-badge {
  display: inline-block;
  background: var(--color-gold);
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.4rem;
}

.goods-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-main);
  margin-bottom: 0.3rem;
  font-family: var(--font-serif);
}

.goods-desc {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.6;
}

.goods-placeholder {
  background: rgba(179, 139, 37, 0.05);
  border: 1px dashed var(--color-gold);
  border-radius: 8px;
  padding: 1.2rem;
  text-align: center;
}

.placeholder-text {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.6;
}