/**
 * yasugi_70years.css
 * 安来という町に、70年教わってきたこと — LP スタイルシート
 * 株式会社永惣 / Kabushiki Kaisha Nagasou
 *
 * ─── 設計方針 ───
 * - クラスプレフィックス: y70-  (衝突ゼロ)
 * - CSS カスタムプロパティ: Cocoon / 親テーマ変数を上書きしない独自空間
 * - レスポンシブ: モバイルファースト (min-width ブレークポイント)
 * - アクセシビリティ: prefers-reduced-motion 完全対応
 * - 画像: 実写 BG + object-fit:cover で 16:9 を維持
 *
 * @package    CocoonChildMaster
 * @subpackage Nagasou2026
 */

/* ============================================================
   0. DESIGN TOKENS
   ============================================================ */
:root {
  /* カラーパレット */
  --y70-sky:           #5B9EC9;
  --y70-sky-light:     #A8D4EC;
  --y70-sky-pale:      #E8F4FB;
  --y70-gold:          #C9983A;
  --y70-gold-light:    #E8C97A;
  --y70-gold-pale:     #FBF5E6;
  --y70-olive:         #8BAB6E;
  --y70-olive-light:   #B8D09A;
  --y70-olive-pale:    #EEF5E8;
  --y70-ink:           #1C1C1E;
  --y70-ink-soft:      #3A3A3C;
  --y70-stone:         #6B6B70;
  --y70-cream:         #FAF8F3;
  --y70-white:         #FFFFFF;
  --y70-border:        rgba(201, 152, 58, 0.25);

  /* タイポグラフィ */
  --y70-font-serif:    'Noto Serif JP', serif;
  --y70-font-display:  'Cormorant Garamond', serif;
  --y70-font-sans:     'Noto Sans JP', sans-serif;

  /* レイアウト */
  --y70-max-width:     900px;
  --y70-header-h:      72px;   /* ヘッダー高さ（スムーズスクロールオフセット用） */

  /* イージング */
  --y70-ease-out:      cubic-bezier(0.22, 1, 0.36, 1);
}

/* ============================================================
   1. BODY / GLOBAL
   ============================================================ */
.nagasou-y70-body {
  font-family: var(--y70-font-serif);
  background: var(--y70-cream);
  color: var(--y70-ink);
  line-height: 1.9;
  overflow-x: hidden;
}

/* Cocoon デフォルト余白リセット（LP専用） */
.nagasou-y70-body #contents,
.nagasou-y70-body .site-content,
.nagasou-y70-body .content-in {
  margin: 0 !important;
  padding: 0 !important;
  max-width: none !important;
}

/* ============================================================
   2. SKIP LINK
   ============================================================ */
.y70-skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--y70-gold);
  color: var(--y70-white);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  z-index: 9999;
  transition: top 0.2s;
}
.y70-skip-link:focus { top: 0.5rem; }

/* ============================================================
   3. READING PROGRESS BAR
   ============================================================ */
.y70-progress {
  position: fixed;
  top: 0; left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--y70-sky), var(--y70-gold), var(--y70-olive));
  z-index: 9990;
  transition: width 0.08s linear;
  pointer-events: none;
}



/* ============================================================
   5. SECTION NAV DOTS (right side)
   ============================================================ */
.y70-nav-dots {
  position: fixed;
  right: 1.4rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.y70-nav-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(107, 107, 112, 0.55);
  cursor: pointer;
  padding: 0;
  transition: background 0.3s ease, transform 0.3s ease;
  position: relative;
}
.y70-nav-dot::after {
  content: attr(aria-label);
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--y70-font-sans);
  font-size: 0.62rem;
  color: var(--y70-stone);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  background: rgba(250, 248, 243, 0.9);
  padding: 2px 6px;
  border-radius: 2px;
}
.y70-nav-dot:hover::after { opacity: 1; }
.y70-nav-dot.is-active    { background: var(--y70-gold); transform: scale(1.6); }
.y70-nav-dot:hover        { background: var(--y70-sky);  transform: scale(1.45); }

@media (max-width: 767px) {
  .y70-nav-dots { display: none; }
}

/* ============================================================
   6. SCROLL REVEAL CLASSES
   ============================================================ */
.y70-reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.85s var(--y70-ease-out),
              transform 0.85s var(--y70-ease-out);
}
.y70-reveal-left {
  opacity: 0;
  transform: translateX(-46px);
  transition: opacity 0.85s var(--y70-ease-out),
              transform 0.85s var(--y70-ease-out);
}
.y70-reveal-right {
  opacity: 0;
  transform: translateX(46px);
  transition: opacity 0.85s var(--y70-ease-out),
              transform 0.85s var(--y70-ease-out);
}
.y70-reveal.is-visible,
.y70-reveal-left.is-visible,
.y70-reveal-right.is-visible {
  opacity: 1;
  transform: translate(0);
}

.y70-delay-1 { transition-delay: 0.12s; }
.y70-delay-2 { transition-delay: 0.24s; }
.y70-delay-3 { transition-delay: 0.36s; }
.y70-delay-4 { transition-delay: 0.50s; }
.y70-delay-5 { transition-delay: 0.64s; }

@media (prefers-reduced-motion: reduce) {
  .y70-reveal, .y70-reveal-left, .y70-reveal-right {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ============================================================
   7. COMMON SECTION / TYPOGRAPHY
   ============================================================ */
.y70-main { display: block; }

.y70-section { position: relative; }

.y70-inner {
  max-width: var(--y70-max-width);
  margin: 0 auto;
  padding: 5rem 2.5rem;
}
.y70-inner--relative { position: relative; }

.y70-chapter-label {
  font-family: var(--y70-font-display);
  font-size: 0.72rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--y70-gold);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.y70-chapter-label::before {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: var(--y70-gold);
  flex-shrink: 0;
}
.y70-chapter-label--light {
  color: var(--y70-gold-light);
}
.y70-chapter-label--light::before {
  background: var(--y70-gold-light);
}

.y70-section-title {
  font-size: clamp(1.75rem, 4.5vw, 2.7rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.03em;
  margin-bottom: 2rem;
}
.y70-section-title--light { color: var(--y70-white); }

.y70-accent--sky   { color: var(--y70-sky); }
.y70-accent--gold  { color: var(--y70-gold); }
.y70-accent--olive { color: var(--y70-olive); }
.y70-accent--sky-light { color: var(--y70-sky-light); }

.y70-body {
  font-size: 1.0rem;
  line-height: 2.1;
  color: var(--y70-ink-soft);
  font-weight: 300;
  margin-bottom: 1.5rem;
}
.y70-body--light {
  color: rgba(255, 255, 255, 0.75);
}

/* 改行禁止ユーティリティ（特定フレーズの途中折り返し防止用） */
.y70-nowrap {
  white-space: nowrap;
}

/* ============================================================
   8. HERO
   ============================================================ */
.y70-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: calc(var(--y70-header-h) + 4rem) 2rem 6rem;
  overflow: hidden;
}

/* BG画像 */
.y70-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.y70-hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
.y70-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(8, 20, 36, 0.78) 0%,
    rgba(14, 28, 52, 0.72) 45%,
    rgba(10, 22, 16, 0.70) 100%
  );
}
.y70-hero__grain {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.5;
  pointer-events: none;
}

/* 装飾ライン */
.y70-hero__deco {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
.y70-hero__line {
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201,152,58,0.12), transparent);
}
.y70-hero__line--1 { top: 20%; }
.y70-hero__line--2 { top: 50%; }
.y70-hero__line--3 { top: 80%; }

/* バッジ */
.y70-hero__badge {
  position: absolute;
  top: calc(var(--y70-header-h) + 1.5rem);
  left: 2.5rem;
  z-index: 3;
  opacity: 0;
  animation: y70FadeUp 1s 0.2s ease both;
}
.y70-hero__badge-region {
  display: block;
  font-family: var(--y70-font-sans);
  font-size: 0.70rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.15em;
  margin-bottom: 2px;
}
.y70-hero__badge-company {
  display: block;
  font-size: 1.0rem;
  font-weight: 600;
  color: rgba(255,255,255,0.88);
  letter-spacing: 0.05em;
}

/* コンテンツ */
.y70-hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
  width: 100%;
}

.y70-hero__eyebrow {
  font-family: var(--y70-font-display);
  font-size: 0.82rem;
  letter-spacing: 0.38em;
  color: var(--y70-gold-light);
  margin-bottom: 2rem;
  opacity: 0;
  animation: y70FadeUp 1.2s 0.3s ease both;
  text-transform: uppercase;
}

.y70-hero__numeral {
  font-family: var(--y70-font-display);
  font-size: clamp(7rem, 18vw, 13rem);
  font-weight: 300;
  line-height: 0.85;
  color: transparent;
  background: linear-gradient(
    135deg,
    var(--y70-sky-light)   0%,
    var(--y70-gold-light) 60%,
    var(--y70-olive-light) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  letter-spacing: -0.02em;
  margin-bottom: 0.8rem;
  opacity: 0;
  animation: y70FadeUp 1.4s 0.5s ease both;
}

.y70-hero__title {
  font-size: clamp(1.35rem, 3.8vw, 2.35rem);
  font-weight: 500;
  color: var(--y70-white);
  letter-spacing: 0.08em;
  line-height: 1.5;
  margin-bottom: 0.8rem;
  opacity: 0;
  animation: y70FadeUp 1.2s 0.8s ease both;
}

.y70-hero__subtitle {
  font-family: var(--y70-font-sans);
  font-size: 0.80rem;
  color: rgba(255,255,255,0.42);
  letter-spacing: 0.2em;
  margin-bottom: 2.8rem;
  opacity: 0;
  animation: y70FadeUp 1.2s 1.0s ease both;
}

.y70-hero__rule {
  width: 56px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--y70-gold), transparent);
  margin: 0 auto 2.5rem;
  opacity: 0;
  animation: y70FadeUp 1s 1.2s ease both;
}

.y70-hero__lead {
  font-size: clamp(0.9rem, 1.5vw, 1.0rem);
  color: rgba(255,255,255,0.70);
  max-width: 560px;
  margin: 0 auto;
  line-height: 2.1;
  font-weight: 300;
  opacity: 0;
  animation: y70FadeUp 1.2s 1.4s ease both;
}

/* スクロールインジケーター */
.y70-hero__scroll {
  position: absolute;
  bottom: 2.2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  animation: y70FadeUp 1s 2s ease both;
}
.y70-hero__scroll-text {
  font-family: var(--y70-font-display);
  font-size: 0.68rem;
  letter-spacing: 0.32em;
  color: rgba(255,255,255,0.38);
  text-transform: uppercase;
}
.y70-hero__scroll-bar {
  display: block;
  width: 1px;
  height: 46px;
  background: linear-gradient(to bottom, var(--y70-gold), transparent);
  animation: y70ScrollPulse 2.4s ease-in-out infinite;
}

@keyframes y70FadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes y70ScrollPulse {
  0%,100% { opacity: 0.28; transform: scaleY(1); }
  50%     { opacity: 0.85; transform: scaleY(1.1); }
}

/* ============================================================
   9. ERA TIMELINE (Chapter 01)
   ============================================================ */
.y70-era { background: var(--y70-white); }

.y70-timeline {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 0 2rem;
  margin: 3rem 0;
  position: relative;
}

.y70-timeline__spine {
  background: linear-gradient(to bottom, var(--y70-sky-light), var(--y70-gold-light));
  grid-row: span 2;
}

.y70-timeline__item {
  padding: 1.8rem 0;
  position: relative;
}
.y70-timeline__item--left {
  text-align: right;
  padding-right: 2.5rem;
}
.y70-timeline__item--right {
  padding-left: 2.5rem;
}

.y70-timeline__year {
  font-family: var(--y70-font-display);
  font-size: 2.3rem;
  font-weight: 300;
  line-height: 1;
  margin-bottom: 0.4rem;
}
.y70-timeline__year--sky   { color: var(--y70-sky); }
.y70-timeline__year--gold  { color: var(--y70-gold); }
.y70-timeline__year--olive { color: var(--y70-olive); }

.y70-timeline__era-label {
  font-size: 0.76rem;
  font-family: var(--y70-font-sans);
  color: var(--y70-stone);
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}

.y70-timeline__desc {
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--y70-ink-soft);
}

.y70-timeline__dot {
  position: absolute;
  top: 50%;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--y70-white);
  border: 2px solid var(--y70-gold);
  transform: translateY(-50%);
}
.y70-timeline__item--left  .y70-timeline__dot { right: -36px; }
.y70-timeline__item--right .y70-timeline__dot { left:  -36px; }

/* mobile timeline */
@media (max-width: 767px) {
  .y70-timeline { grid-template-columns: 1fr; gap: 0; }
  .y70-timeline__spine { display: none; }
  .y70-timeline__item--left {
    text-align: left;
    padding-right: 0;
    padding-left: 1.6rem;
    border-left: 2px solid var(--y70-sky-light);
  }
  .y70-timeline__item--right {
    padding-left: 1.6rem;
    border-left: 2px solid var(--y70-gold-light);
  }
  .y70-timeline__item--left  .y70-timeline__dot,
  .y70-timeline__item--right .y70-timeline__dot { left: -6px; right: auto; }
}

/* ── タイムライン Row 1 左カラム空白プレースホルダー ────────
   グリッド自動配置で col1/row1 を確保する空アイテム。
   視覚的コンテンツはなく、スクリーンリーダーにも非通知（aria-hidden）。
   モバイルでは縦積みレイアウトになるため非表示。
─────────────────────────────────────────────────────────── */
.y70-timeline__item--placeholder {
  padding: 0;
  pointer-events: none;
  /* ドットや装飾が出ないよう最小化 */
  min-height: 0;
}

@media (max-width: 767px) {
  /* モバイルは縦積みなのでプレースホルダー不要 */
  .y70-timeline__item--placeholder {
    display: none;
  }
}

/* ── タイムライン 内インライン写真（高度成長期） ── */
.y70-timeline__photo {
  margin: 1.4rem 0 0;
  padding: 0;
  border: none;
  /* アスペクト比 1:1 を維持してトリミング */
  aspect-ratio: 1 / 1;
  overflow: hidden;
  position: relative;
  background: linear-gradient(
    135deg,
    var(--y70-gold-pale) 0%,
    var(--y70-cream)     100%
  ); /* 画像読み込み前のフォールバック */
}

.y70-timeline__photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.55s var(--y70-ease-out);
}

/* ホバー時に微細ズームイン（PC のみ） */
@media (hover: hover) {
  .y70-timeline__item:hover .y70-timeline__photo-img {
    transform: scale(1.04);
  }
}

/* モバイルでは画像を左揃えカードとして表示 */
@media (max-width: 767px) {
  .y70-timeline__photo {
    margin-top: 1rem;
    /* スマホでは横幅に合わせて正方形に */
    max-width: 100%;
  }
}

/* ── タイムライン 明示グリッド配置（CHAPTER 01 / 3行ジグザグ）──
   設計: 左上・右中・左下の非対称ジグザグで視線を斜めに誘導。
   PC のみ適用。モバイルは 1fr 縦積みのため auto-flow に委ねる。
─────────────────────────────────────────────────────────────── */
@media (min-width: 768px) {

  /* spine を 3行貫通に拡張（既存 span 2 を上書き） */
  .y70-timeline__spine--span-3 {
    grid-column: 2;
    grid-row: 1 / 4;
  }

  /* 高度成長: 左列 1行目 */
  .y70-timeline__item--pos-left-1 {
    grid-column: 1;
    grid-row: 1;
  }

  /* バブル: 右列 2行目 */
  .y70-timeline__item--pos-right-2 {
    grid-column: 3;
    grid-row: 2;
  }

  /* 現代: 左列 3行目 */
  .y70-timeline__item--pos-left-3 {
    grid-column: 1;
    grid-row: 3;
  }
}

/* ============================================================
   10. PEOPLE (Chapter 02)
   ============================================================ */
.y70-people {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #F0F7FB 0%, var(--y70-cream) 100%);
}

.y70-people::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("http://ops-hub.nagasou.jp/wp-content/uploads/2026/05/rekishi_chapter02.webp");
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  opacity: 0.24;
  transform: scale(1.03);
  z-index: 0;
}

.y70-people::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      160deg,
      rgba(250, 248, 243, 0.80) 0%,
      rgba(240, 247, 251, 0.70) 42%,
      rgba(250, 248, 243, 0.75) 100%
    );
  z-index: 1;
}

.y70-people > .y70-inner {
  position: relative;
  z-index: 2;
}

@media (max-width: 767px) {
  .y70-people::before {
    background-position: center top;
    opacity: 0.20;
  }

  .y70-people::after {
    background:
      linear-gradient(
        180deg,
        rgba(250, 248, 243, 0.94) 0%,
        rgba(240, 247, 251, 0.90) 50%,
        rgba(250, 248, 243, 0.95) 100%
      );
  }
}

.y70-quote {
  position: relative;
  padding: 2.8rem 3.2rem;
  background: var(--y70-white);
  border-left: 4px solid var(--y70-sky);
  box-shadow: 0 8px 48px rgba(91,158,201,0.08);
  margin: 2.5rem 0;
}
.y70-quote::before {
  content: '\201C';
  font-family: var(--y70-font-display);
  font-size: 7rem;
  color: var(--y70-sky-light);
  position: absolute;
  top: -1.2rem;
  left: 1.2rem;
  line-height: 1;
  pointer-events: none;
}
.y70-quote__text {
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 2.0;
  color: var(--y70-ink);
  position: relative;
  z-index: 1;
}

@media (max-width: 767px) {
  .y70-quote { padding: 2rem 1.5rem; }
  .y70-quote::before { font-size: 4.5rem; }
}

.y70-traits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
  margin: 2.5rem 0;
  grid-auto-flow: row;
}

@media (max-width: 767px) {
  .y70-traits {
    grid-template-columns: 1fr;
  }
}

.y70-trait {
  background: var(--y70-white);
  border: 1px solid rgba(91,158,201,0.2);
  padding: 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.y70-trait::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--y70-sky), var(--y70-sky-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.y70-trait:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,0,0,0.07); }
.y70-trait:hover::after { transform: scaleX(1); }
.y70-trait__icon  { font-size: 1.75rem; margin-bottom: 0.65rem; display: block; }
.y70-trait__title { font-size: 0.93rem; font-weight: 600; color: var(--y70-ink); margin-bottom: 0.4rem; }
.y70-trait__sub   { font-size: 0.76rem; color: var(--y70-stone); line-height: 1.6; font-family: var(--y70-font-sans); }

/* ============================================================
   11. CULTURE / 安来節 (Chapter 03) — BG IMAGE
   ============================================================ */
.y70-culture {
  position: relative;
  overflow: hidden;
  color: var(--y70-white);
}

.y70-culture__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.y70-culture__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
.y70-culture__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(28, 43, 26, 0.88) 0%,
    rgba(14, 28, 42, 0.85) 60%,
    rgba(26, 34, 48, 0.88) 100%
  );
}

.y70-culture__inner {
  position: relative;
  z-index: 1;
  max-width: var(--y70-max-width);
  margin: 0 auto;
  padding: 5rem 2.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 767px) {
  .y70-culture__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* 回転ビジュアル */
.y70-culture__visual {
  position: relative;
  height: 380px;
}
@media (max-width: 767px) {
  .y70-culture__visual { height: 260px; }
}

.y70-culture__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid;
  top: 50%; left: 50%;
}
.y70-culture__ring--1 {
  width: 300px; height: 300px;
  margin: -150px 0 0 -150px;
  border-color: rgba(201,152,58,0.3);
  animation: y70RotateSlow 30s linear infinite;
}
.y70-culture__ring--2 {
  width: 200px; height: 200px;
  margin: -100px 0 0 -100px;
  border-color: rgba(91,158,201,0.3);
  animation: y70RotateSlow 20s linear infinite reverse;
}
.y70-culture__ring--3 {
  width: 120px; height: 120px;
  margin: -60px 0 0 -60px;
  border-color: rgba(139,171,110,0.4);
  animation: y70RotateSlow 12s linear infinite;
}
@keyframes y70RotateSlow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.y70-culture__dots { position: absolute; inset: 0; }
.y70-culture__dot {
  position: absolute;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--y70-gold);
  opacity: 0.55;
  animation: y70Twinkle 3s ease-in-out infinite;
}
@keyframes y70Twinkle {
  0%,100% { opacity: 0.25; }
  50%     { opacity: 0.85; }
}

.y70-culture__center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 2;
}
.y70-culture__kanji {
  font-size: 3.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--y70-gold-light), var(--y70-olive-light));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}
.y70-culture__kanji-sub {
  font-size: 0.65rem;
  letter-spacing: 0.32em;
  color: rgba(255,255,255,0.45);
  margin-top: 0.3rem;
}

/* 右カラム */
.y70-culture__body .y70-section-title { color: var(--y70-white); }
.y70-culture__body .y70-chapter-label { color: var(--y70-gold-light); }
.y70-culture__body .y70-chapter-label::before { background: var(--y70-gold-light); }

/*
 * 文化セクション 見出しサイズ調整
 * 理由: 2カラムレイアウト時に "笑いは、暮らしから" が
 *       1行に収まるよう font-size 上限を調整
 */
.y70-culture__body .y70-section-title {
  font-size: clamp(1.55rem, 3.4vw, 2.2rem);
}

.y70-pillars {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  margin-top: 1.8rem;
}
.y70-pillar {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.2rem 1.4rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  transition: background 0.3s ease;
}
.y70-pillar:hover { background: rgba(255,255,255,0.09); }
.y70-pillar__icon  { font-size: 1.3rem; flex-shrink: 0; margin-top: 0.1rem; }
.y70-pillar__title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--y70-gold-light);
  margin-bottom: 0.3rem;
}
.y70-pillar__text {
  font-size: 0.80rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.75;
  font-family: var(--y70-font-sans);
}

/* ============================================================
   12. STEEL (Chapter 04)
   ============================================================ */
.y70-steel { background: var(--y70-cream); }

.y70-steel__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  margin-top: 2.5rem;
}
@media (max-width: 767px) {
  .y70-steel__layout { grid-template-columns: 1fr; gap: 2rem; }
}

.y70-steel__quote {
  background: linear-gradient(135deg, var(--y70-gold-pale), var(--y70-cream));
  border-left: 4px solid var(--y70-gold);
  padding: 2rem 2.4rem;
  margin: 1.8rem 0;
}
.y70-steel__quote-text {
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--y70-ink);
  line-height: 1.75;
}
.y70-steel__quote-sub {
  font-size: 0.78rem;
  color: var(--y70-stone);
  margin-top: 0.8rem;
  font-family: var(--y70-font-sans);
}

.y70-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.4rem 0;
}
.y70-tag {
  padding: 0.32rem 0.85rem;
  border: 1px solid var(--y70-gold);
  font-size: 0.76rem;
  color: var(--y70-gold);
  letter-spacing: 0.1em;
  font-family: var(--y70-font-sans);
  transition: background 0.22s ease, color 0.22s ease;
  cursor: default;
}
.y70-tag:hover { background: var(--y70-gold); color: var(--y70-white); }

.y70-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.y70-stat {
  background: var(--y70-white);
  border: 1px solid var(--y70-border);
  padding: 1.7rem 1.4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.y70-stat::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--y70-gold), var(--y70-gold-light));
}
.y70-stat__num {
  font-family: var(--y70-font-display);
  font-size: 2.6rem;
  font-weight: 300;
  color: var(--y70-gold);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.y70-stat__label {
  font-size: 0.70rem;
  color: var(--y70-stone);
  letter-spacing: 0.1em;
  font-family: var(--y70-font-sans);
}

/* ============================================================
   13. BELT DIVIDER
   ============================================================ */
.y70-belt {
  background: linear-gradient(90deg, var(--y70-sky) 0%, #3A7DA8 50%, var(--y70-sky) 100%);
  padding: 3rem 2.5rem;
  text-align: center;
  color: var(--y70-white);
  position: relative;
  overflow: hidden;
}
.y70-belt::before,
.y70-belt::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 180px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05));
}
.y70-belt::before { left: 0; }
.y70-belt::after  { right: 0; transform: scaleX(-1); }
.y70-belt__inner {
  font-size: clamp(1.1rem, 3vw, 1.65rem);
  font-weight: 500;
  letter-spacing: 0.07em;
  line-height: 1.7;
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.y70-belt__inner strong {
  color: #FFF5CC;
}

/* ============================================================
   14. LANDSCAPE — IMAGE CARDS (Chapter 05)
   ============================================================ */
.y70-landscape { background: var(--y70-olive-pale); }

.y70-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  margin: 2.8rem 0;
}
@media (max-width: 900px) {
  .y70-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 580px) {
  .y70-cards { grid-template-columns: 1fr; }
}

.y70-card {
  background: var(--y70-white);
  overflow: hidden;
  transition: transform 0.38s var(--y70-ease-out),
              box-shadow 0.38s ease;
}
.y70-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 52px rgba(0,0,0,0.10);
}

.y70-card__img-wrap {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  overflow: hidden;
}
.y70-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.55s ease;
  display: block;
}
.y70-card:hover .y70-card__img { transform: scale(1.05); }

.y70-card__body { padding: 1.3rem 1.4rem 1.7rem; }
.y70-card__en {
  display: block;
  font-family: var(--y70-font-display);
  font-size: 0.68rem;
  color: var(--y70-stone);
  letter-spacing: 0.2em;
  margin-bottom: 0.6rem;
}
.y70-card__name {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--y70-ink);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
}
.y70-card__desc {
  font-size: 0.78rem;
  color: var(--y70-stone);
  line-height: 1.75;
  font-family: var(--y70-font-sans);
}

/* ============================================================
   15. GAS STATION — CROSSFADE BG (Chapter 06)
   ============================================================ */
.y70-station {
  position: relative;
  color: var(--y70-white);
  overflow: hidden;
}

/* クロスフェード背景 */
.y70-station__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.y70-station__bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0;
  transition: opacity 1.8s ease;
}
.y70-station__bg-img.is-active { opacity: 1; }
.y70-station__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    150deg,
    rgba(8, 18, 30, 0.82) 0%,
    rgba(12, 22, 40, 0.76) 60%,
    rgba(8, 16, 12, 0.80) 100%
  );
  z-index: 1;
}

/* テキスト */
.y70-station__layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  margin-top: 2.5rem;
}
@media (max-width: 767px) {
  .y70-station__layout { grid-template-columns: 1fr; }
}

.y70-station__big-quote {
  background: rgba(168, 212, 236, 0.10);
  border: 1px solid rgba(168,212,236,0.18);
  padding: 2.2rem 2.2rem;
  border-bottom: 3px solid var(--y70-sky-light);
  margin: 1.4rem 0;
}
.y70-station__big-quote-text {
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  font-weight: 600;
  line-height: 2.0;
  color: var(--y70-white);
}
.y70-station__big-quote-en {
  display: block;
  font-family: var(--y70-font-display);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--y70-sky-light);
  margin-top: 0.9rem;
}

/* タイムライン */
.y70-station__timeline {
  position: relative;
  z-index: 2;
  padding-left: 2rem;
  margin-top: 1.5rem;
}
.y70-station__timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--y70-sky-light), var(--y70-olive-light));
}

.y70-station__event {
  position: relative;
  padding-bottom: 1.8rem;
  padding-left: 1.4rem;
}
.y70-station__event::before {
  content: '';
  position: absolute;
  left: -2.3rem;
  top: 0.4rem;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(8, 18, 30, 0.8);
  border: 2px solid var(--y70-sky-light);
}

.y70-station__event-label {
  font-family: var(--y70-font-display);
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: var(--y70-sky-light);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}
.y70-station__event-title {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--y70-white);
  margin-bottom: 0.35rem;
}
.y70-station__event-text {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
  font-family: var(--y70-font-sans);
}

/* ============================================================
   16. EPILOGUE + CTA
   ============================================================ */
.y70-epilogue {
  position: relative;
  color: var(--y70-white);
  text-align: center;
  overflow: hidden;
}

.y70-epilogue__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.y70-epilogue__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.y70-epilogue__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    165deg,
    rgba(10, 21, 32, 0.86) 0%,
    rgba(13, 27, 12, 0.82) 50%,
    rgba(10, 18, 24, 0.88) 100%
  );
}

.y70-epilogue__glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}
.y70-epilogue__glow--1 {
  width: 600px; height: 280px;
  background: radial-gradient(ellipse, rgba(91,158,201,0.07), transparent 70%);
  top: -60px; left: 50%;
  transform: translateX(-50%);
}
.y70-epilogue__glow--2 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(139,171,110,0.06), transparent 70%);
  bottom: -80px; right: -80px;
}

.y70-epilogue__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 6rem 2.5rem;
}

.y70-epilogue__label {
  display: block;
  font-family: var(--y70-font-display);
  font-size: 0.70rem;
  letter-spacing: 0.52em;
  color: var(--y70-gold-light);
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.y70-epilogue__numeral {
  font-family: var(--y70-font-display);
  font-size: clamp(5rem, 12vw, 9rem);
  font-weight: 300;
  color: transparent;
  background: linear-gradient(
    135deg,
    rgba(91,158,201,0.22),
    rgba(201,152,58,0.22)
  );
  -webkit-background-clip: text;
  background-clip: text;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.y70-epilogue__poem {
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  line-height: 2.7;
  font-weight: 300;
  color: rgba(255,255,255,0.86);
  letter-spacing: 0.04em;
  margin-bottom: 2.5rem;
}

.y70-em--gold  { color: var(--y70-gold-light);  font-weight: 500; }
.y70-em--sky   { color: var(--y70-sky-light);   font-weight: 500; }
.y70-em--olive { color: var(--y70-olive-light); font-weight: 500; }

.y70-epilogue__rule {
  width: 72px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--y70-gold), transparent);
  margin: 2.2rem auto;
}

.y70-epilogue__coda {
  font-size: clamp(0.92rem, 1.8vw, 1.12rem);
  color: rgba(255,255,255,0.65);
  line-height: 2.2;
  margin-bottom: 2.5rem;
}

.y70-epilogue__company {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.38);
  font-family: var(--y70-font-sans);
  letter-spacing: 0.15em;
  line-height: 2;
  margin-bottom: 3.5rem;
}
.y70-epilogue__company strong {
  display: block;
  color: rgba(255,255,255,0.72);
  font-weight: 600;
  font-size: 1.08rem;
  letter-spacing: 0.1em;
  margin-bottom: 0.3rem;
  font-family: var(--y70-font-serif);
}

/* ── CTA ── */
.y70-epilogue__cta {
  margin-top: 1rem;
  padding: 2.5rem 2.5rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(201,152,58,0.25);
}

.y70-epilogue__cta-lead {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.1em;
  margin-bottom: 1.6rem;
  font-family: var(--y70-font-sans);
}

.y70-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1.1rem 3rem;
  background: linear-gradient(135deg, var(--y70-gold) 0%, #B8841E 100%);
  color: var(--y70-white);
  text-decoration: none;
  font-size: 1.0rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s var(--y70-ease-out), box-shadow 0.3s ease;
}
.y70-cta-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  transform: translateX(-110%);
  transition: transform 0.45s ease;
}
.y70-cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(201,152,58,0.38);
}
.y70-cta-btn:hover::before { transform: translateX(0); }
.y70-cta-btn__text { position: relative; z-index: 1; }
.y70-cta-btn__arrow {
  font-size: 1.2rem;
  position: relative;
  z-index: 1;
  transition: transform 0.3s ease;
}
.y70-cta-btn:hover .y70-cta-btn__arrow { transform: translateX(4px); }

.y70-epilogue__cta-sub {
  font-size: 0.80rem;
  color: rgba(255,255,255,0.42);
  line-height: 1.85;
  margin-top: 1.4rem;
  font-family: var(--y70-font-sans);
  letter-spacing: 0.06em;
}

/* ============================================================
   17. RESPONSIVE — GLOBAL ADJUSTMENTS
   ============================================================ */
@media (max-width: 767px) {
  .y70-inner { padding: 3.5rem 1.4rem; }
  .y70-culture__inner { padding: 3.5rem 1.4rem; }
  .y70-epilogue__inner { padding: 4rem 1.4rem; }
  .y70-hero { padding-bottom: 5rem; }

  .y70-hero__badge { top: calc(var(--y70-header-h) + 0.8rem); left: 1.2rem; }

  .y70-cta-btn { padding: 1rem 2.2rem; font-size: 0.92rem; }

  .y70-station__layout { gap: 2rem; }
}

@media (min-width: 1200px) {
  .y70-inner { padding: 6rem 3rem; }
  .y70-culture__inner { padding: 6rem 3rem; }
}