/**
 * 思考OS — 認知戦略アーキテクト LP — cognitive-os.css
 *
 * 設計思想:
 *   - #cos-root 配下のみ完全独立デザイン
 *   - Cocoon / entry-content / article 干渉を完全排除
 *   - CSS カスタムプロパティで全色・全値を管理
 *   - モバイルファースト + clamp() 流体タイポグラフィ
 *   - アニメーションは opacity / transform / filter のみ使用
 *   - カラーパレット: 深墨×和紙アイボリー×枯れ金（エディトリアル・禅的高級感）
 *   - フォント: Shippori Mincho（日本語明朝）+ Space Mono（欧文等幅）
 *
 * @package cocoon-child-master
 */

/* ================================================================
   1. COCOON 干渉リセット
   ================================================================ */
.cognitive-os .article,
.cognitive-os .entry-content,
.cognitive-os .main,
.cognitive-os .content,
.cognitive-os .wrap,
.cognitive-os #main,
.cognitive-os #body-in,
.cognitive-os #container,
.cognitive-os #container-in,
.cognitive-os #contents,
.cognitive-os #contents-in {
  display: block !important;
  width: 100% !important;
  max-width: 100% !important;
  padding: 0 !important;
  margin: 0 !important;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  float: none !important;
  position: static !important;
  overflow: visible !important;
  height: auto !important;
  min-height: 0 !important;
  flex: none !important;
}

.cognitive-os #sidebar,
.cognitive-os .sidebar,
.cognitive-os #sidebar-scroll,
.cognitive-os .sidebar-top,
.cognitive-os .sidebar-bottom { display: none !important; }

.cognitive-os #footer:not(.tp-footer),
.cognitive-os .site-footer:not(.tp-footer),
.cognitive-os .footer:not(.tp-footer) { display: none !important; }


/* ================================================================
   2. CSS カスタムプロパティ（全色・全値）
   ================================================================ */
#cos-root {
  /* ─ カラーパレット ─ */
  --cos-ink:          #0a0a0f;
  --cos-ink-soft:     #1a1a22;
  --cos-paper:        #f5f0e8;
  --cos-paper-warm:   #ede8db;
  --cos-paper-card:   #f0ebe2;
  --cos-gold:         #c9a84c;
  --cos-gold-bright:  #dfc070;
  --cos-gold-pale:    #e8d9a8;
  --cos-gold-dim:     rgba(201,168,76,0.5);
  --cos-mist:         #6b7280;
  --cos-mist-light:   #d1cfc9;
  --cos-accent-teal:  #1a4a4a;
  --cos-red:          #8b1a1a;
  --cos-line:         rgba(10,10,15,0.10);
  --cos-line-light:   rgba(245,240,232,0.08);
  --cos-text:         #0a0a0f;
  --cos-text-2:       rgba(10,10,15,0.65);

  /* ─ タイポグラフィ ─ */
  --cos-font-serif:  'Shippori Mincho', 'Noto Serif JP', Georgia, serif;
  --cos-font-mono:   'Space Mono', 'Courier New', monospace;

  /* ─ スペーシング ─ */
  --cos-section-py:      clamp(4.5rem, 9vw, 9rem);
  --cos-container-max:   900px;
  --cos-container-wide:  1200px;
  --cos-radius:          4px;
  --cos-radius-sm:       2px;

  /* ─ トランジション ─ */
  --cos-transition:      0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --cos-transition-slow: 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}


/* ================================================================
   3. GLOBAL RESET — #cos-root スコープ
   ================================================================ */
#cos-root,
#cos-root *,
#cos-root *::before,
#cos-root *::after {
  box-sizing: border-box;
}

#cos-root h1, #cos-root h2, #cos-root h3,
#cos-root h4, #cos-root h5, #cos-root h6,
#cos-root p, #cos-root ul, #cos-root ol,
#cos-root li, #cos-root figure, #cos-root blockquote,
#cos-root dl, #cos-root dd {
  margin: 0;
  padding: 0;
}

#cos-root ul, #cos-root ol { list-style: none; }

#cos-root {
  background-color: var(--cos-paper);
  color: var(--cos-text);
  font-family: var(--cos-font-serif);
  font-weight: 400;
  line-height: 1.9;
  overflow-x: clip;
  overflow-y: visible;
  position: relative;
  width: 100%;
  max-width: 100%;
  padding: 0;
  margin: 0;
  overflow-wrap: break-word;
  word-break: auto-phrase;
}

/* ── ノイズテクスチャ オーバーレイ ── */
#cos-root .cos-noise-overlay {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='512' height='512' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.45;
  z-index: 1;
}


/* ================================================================
   4. LAYOUT — コンテナ / セクション
   ================================================================ */
.cos-container {
  max-width: var(--cos-container-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}

.cos-container--wide {
  max-width: var(--cos-container-wide);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}

.cos-section {
  padding-block: var(--cos-section-py);
  position: relative;
}


/* ================================================================
   5. スクロールリビール
   ================================================================ */
.cos-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity  0.75s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}

.cos-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.cos-reveal[data-delay="1"] { transition-delay: 0.10s; }
.cos-reveal[data-delay="2"] { transition-delay: 0.20s; }
.cos-reveal[data-delay="3"] { transition-delay: 0.30s; }
.cos-reveal[data-delay="4"] { transition-delay: 0.40s; }


/* ================================================================
   6. BLOCKQUOTE / TABLE 白抜き完全解消
   ================================================================ */
#cos-root blockquote {
  background: var(--cos-paper-card) !important;
  border-left: 3px solid var(--cos-gold) !important;
  border-right: none !important;
  color: var(--cos-text) !important;
  padding: 1.5rem 1.75rem !important;
  margin: 0 !important;
  box-shadow: none !important;
  border-radius: var(--cos-radius-sm) !important;
}

#cos-root blockquote::before,
#cos-root blockquote::after { display: none !important; }

.cos-table-wrap {
  overflow-x: auto;
  margin-block: 1.5rem;
  border: 1px solid var(--cos-line);
}

.cos-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  background: transparent !important;
}

.cos-table thead th {
  background: var(--cos-ink) !important;
  color: var(--cos-paper);
  padding: 0.875rem 1.25rem;
  text-align: left;
  font-family: var(--cos-font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(201,168,76,0.2);
}

.cos-table tbody td {
  background: transparent !important;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--cos-line);
  color: var(--cos-text-2);
  vertical-align: top;
  line-height: 1.7;
}

.cos-table tbody tr:last-child td { border-bottom: none; }
.cos-table tbody tr:hover td { background: rgba(201,168,76,0.03) !important; }


/* ================================================================
   7. SHARED COMPONENTS — セクションヘッダー / アイブロウ
   ================================================================ */
.cos-section-header {
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.cos-eyebrow {
  font-family: var(--cos-font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--cos-mist);
  margin-bottom: 1.25rem;
  display: block;
}

.cos-eyebrow--light {
  color: rgba(201,168,76,0.6);
}

.cos-section-title {
  font-family: var(--cos-font-serif);
  font-weight: 900;
  font-size: clamp(2rem, 4.5vw, 3.75rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--cos-ink);
}

.cos-section-title--light {
  color: var(--cos-paper);
}

.cos-section-title em {
  font-style: normal;
  color: var(--cos-gold);
}

.cos-section-title span {
  color: var(--cos-gold);
}

.cos-section-desc {
  font-size: 1rem;
  color: var(--cos-text-2);
  max-width: 640px;
  line-height: 2;
  margin-top: 1.5rem;
}

.cos-section-desc--light {
  color: rgba(245,240,232,0.6);
}


/* ================================================================
   8. CTA ボタン 共通
   ================================================================ */
.cos-cta-btn {
  display: inline-block;
  background-color: var(--cos-accent-teal);
  color: #fff;
  font-family: var(--cos-font-serif);
  font-weight: 700;
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  text-decoration: none;
  padding: 1.1em 2.75em;
  letter-spacing: 0.05em;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform var(--cos-transition), filter var(--cos-transition);
}

.cos-cta-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--cos-transition);
}

.cos-cta-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  color: #fff;
  text-decoration: none;
}

.cos-cta-btn:hover::before {
  background: rgba(255,255,255,0.07);
}

.cos-cta-btn--large {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  padding: 1.35em 3.75em;          /* 左右パディングを追加してボタン幅を格上げ */
  letter-spacing: 0.08em;          /* 字間でボタン文字に品格を付与 */
  box-shadow:
    0 2px  8px rgba(0,0,0,0.22),
    0 0   0   3px transparent;     /* フォーカスリング準備 */
  transition:
    transform var(--cos-transition),
    filter  var(--cos-transition),
    box-shadow var(--cos-transition);
}

/* ホバー時：金色オーラのボックスシャドウを追加 */
.cos-cta-btn--large:hover {
  box-shadow:
    0 6px 24px rgba(0,0,0,0.32),
    0 0  0   3px rgba(201,168,76,0.28);
}

/* フォーカス時のアクセシビリティ対応 */
.cos-cta-btn--large:focus-visible {
  outline: none;
  box-shadow:
    0 6px 24px rgba(0,0,0,0.32),
    0 0  0   3px rgba(201,168,76,0.55);
}


/* ================================================================
   9. COVER — ファーストビュー
   ================================================================ */
.cos-cover {
  position: relative;
  min-height: 100vh;
  background: var(--cos-ink);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.cos-cover__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

/* Cover 背景画像 */
.cos-cover__bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 28%;
  opacity: 0.72;
  filter: grayscale(18%) contrast(1.10) brightness(0.68);
  z-index: 0;
  display: block;
}

.cos-cover__bg-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 15% 30%, rgba(201,168,76,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 85% 75%, rgba(26,74,74,0.20) 0%, transparent 60%),
    rgba(10,10,15,0.58);
}

.cos-cover__bg-lines {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.cos-cover__bg-lines::before {
  content: '';
  position: absolute;
  top: -100px;
  right: 8%;
  width: 1px;
  height: 140vh;
  background: linear-gradient(to bottom, transparent, rgba(201,168,76,0.22), transparent);
  transform: rotate(8deg);
}

.cos-cover__bg-lines::after {
  content: '';
  position: absolute;
  top: -100px;
  left: 15%;
  width: 1px;
  height: 140vh;
  background: linear-gradient(to bottom, transparent, rgba(201,168,76,0.09), transparent);
  transform: rotate(-3deg);
}

.cos-cover__content {
  position: relative;
  z-index: 2;
  max-width: 1300px;
  margin: 0 auto;
  width: 100%;
  padding: clamp(7rem, 12vw, 10rem) clamp(1.5rem, 8vw, 8rem) clamp(5rem, 8vw, 7rem);
}

.cos-cover__eyebrow {
  font-family: var(--cos-font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--cos-gold);
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  opacity: 0;
  animation: cos-fadeUp 1s ease 0.3s forwards;
}

.cos-cover__eyebrow-dot {
  width: 6px;
  height: 6px;
  background: var(--cos-gold);
  border-radius: 50%;
  flex-shrink: 0;
  animation: cos-pulse 2s ease-in-out 1.5s infinite;
}

.cos-cover__title {
  font-family: var(--cos-font-serif);
  font-weight: 900;
  font-size: clamp(3.5rem, 9vw, 9rem);
  line-height: 0.95;
  color: var(--cos-paper);
  letter-spacing: -0.025em;
  margin-bottom: 0;
  opacity: 0;
  animation: cos-fadeUp 1s ease 0.5s forwards;
}

.cos-cover__title em {
  font-style: normal;
  color: var(--cos-gold);
  display: block;
}

.cos-cover__divider {
  width: 56px;
  height: 1px;
  background: var(--cos-gold);
  margin: 2.5rem 0;
  opacity: 0;
  animation: cos-scaleIn 1s ease 1s forwards;
  transform-origin: left;
}

.cos-cover__sub {
  font-family: var(--cos-font-serif);
  font-weight: 300;
  font-size: clamp(0.95rem, 1.4vw, 1.15rem);
  color: rgba(245,240,232,0.55);
  max-width: 560px;
  line-height: 2;
  opacity: 0;
  animation: cos-fadeUp 1s ease 0.9s forwards;
}

.cos-cover__cta {
  margin-top: 3rem;
  opacity: 0;
  animation: cos-fadeUp 1s ease 1.2s forwards;
}

.cos-cover__cta-sub {
  font-family: var(--cos-font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: rgba(201,168,76,0.5);
  margin-top: 1rem;
  text-transform: uppercase;
}

.cos-cover__scroll {
  position: absolute;
  bottom: 2.5rem;
  left: clamp(1.5rem, 8vw, 8rem);
  font-family: var(--cos-font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  color: rgba(201,168,76,0.45);
  display: flex;
  align-items: center;
  gap: 1rem;
  opacity: 0;
  animation: cos-fadeUp 1s ease 1.6s forwards;
}

.cos-cover__scroll::after {
  content: '';
  display: block;
  width: 36px;
  height: 1px;
  background: rgba(201,168,76,0.35);
  animation: cos-scrollLine 2s ease-in-out 2s infinite;
}


/* ================================================================
   10. FOUNDATION — 3原則の本質
   ================================================================ */
.cos-foundation {
  background: var(--cos-paper);
}

.cos-foundation::before {
  content: '';
  position: absolute;
  top: 0;
  left: clamp(1.5rem, 5vw, 3rem);
  right: clamp(1.5rem, 5vw, 3rem);
  height: 1px;
  background: var(--cos-line);
}

.cos-big-quote {
  font-family: var(--cos-font-serif);
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 3.25rem);
  line-height: 1.3;
  color: var(--cos-ink);
  max-width: 860px;
  letter-spacing: -0.01em;
  position: relative;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.cos-big-quote::before {
  content: '"';
  font-family: var(--cos-font-serif);
  font-size: 8rem;
  color: var(--cos-gold-pale);
  position: absolute;
  top: -2rem;
  left: -1.5rem;
  line-height: 1;
  z-index: 0;
  pointer-events: none;
}

.cos-big-quote mark {
  background: linear-gradient(to right, var(--cos-gold-pale), transparent);
  color: inherit;
  padding: 0 0.2em;
}

.cos-foundation-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
}

.cos-foundation-text p {
  font-size: 1rem;
  color: var(--cos-text-2);
  line-height: 2;
}

.cos-foundation-text p + p { margin-top: 1.5em; }

.cos-foundation-text strong {
  color: var(--cos-ink);
  font-weight: 700;
}

.cos-foundation-visual {
  padding: 2.5rem;
  border: 1px solid var(--cos-line);
  background: var(--cos-paper-warm);
  position: relative;
}

.cos-foundation-visual::after {
  content: 'OS';
  font-family: var(--cos-font-mono);
  font-size: 5rem;
  font-weight: 700;
  color: rgba(201,168,76,0.07);
  position: absolute;
  bottom: 1rem;
  right: 1.5rem;
  line-height: 1;
  pointer-events: none;
}

/* Foundation 画像ラッパー */
.cos-foundation-img-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
  margin-bottom: 2rem;
  aspect-ratio: 16 / 7;
}

.cos-foundation-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  filter: grayscale(20%) contrast(1.1) brightness(0.85);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.8s ease;
}

.cos-foundation-visual:hover .cos-foundation-img {
  transform: scale(1.03);
  filter: grayscale(0%) contrast(1.05) brightness(0.9);
}

.cos-foundation-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(240,235,226,0.6) 85%,
    var(--cos-paper-warm) 100%
  );
  pointer-events: none;
}

.cos-pillars-mini {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.cos-pillar-mini {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  align-items: start;
}

.cos-pillar-mini__num {
  font-family: var(--cos-font-mono);
  font-size: 0.6rem;
  color: var(--cos-gold);
  letter-spacing: 0.1em;
  padding-top: 0.25rem;
}

.cos-pillar-mini__title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.25rem;
  color: var(--cos-ink);
}

.cos-pillar-mini__desc {
  font-size: 0.82rem;
  color: var(--cos-mist);
  line-height: 1.75;
}


/* ================================================================
   11. PRINCIPLES — ダーク詳細解説
   ================================================================ */
.cos-principles {
  background: var(--cos-ink);
  color: var(--cos-paper);
  padding-bottom: 0;
}

.cos-principles-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 100% 50% at 0% 50%, rgba(139,26,26,0.05) 0%, transparent 50%),
    radial-gradient(ellipse 80% 80% at 100% 100%, rgba(201,168,76,0.03) 0%, transparent 60%);
  pointer-events: none;
}

/* Principles セクション背景画像（mix-blend-mode: screen で琥珀光を浮かせる） */
.cos-principles-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 55%;
  opacity: 0.38;
  filter: contrast(1.35) brightness(0.85) sepia(30%);
  mix-blend-mode: screen;
  pointer-events: none;
  display: block;
  z-index: 1;
}

/* ヘッダーコンテナを画像より前面に確実に浮かせる */
.cos-principles .cos-container--wide {
  position: relative;
  z-index: 3;
}

.cos-principles-table {
  position: relative;
  z-index: 2;
  margin-top: 0;
}

.cos-principle-row {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--cos-line-light);
  padding: 3.5rem clamp(1.5rem, 5vw, 2.5rem);
  transition: background var(--cos-transition);
}

.cos-principle-row:hover {
  background: rgba(201,168,76,0.025);
}

.cos-principle-row:last-child {
  border-bottom: 1px solid var(--cos-line-light);
}

.cos-principle-num {
  font-family: var(--cos-font-mono);
  font-size: 0.6rem;
  color: rgba(201,168,76,0.4);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  display: block;
}

.cos-principle-title {
  font-family: var(--cos-font-serif);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: var(--cos-paper);
}

.cos-principle-origin {
  font-family: var(--cos-font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--cos-gold);
  text-transform: uppercase;
  margin-bottom: 1.75rem;
  display: block;
}

.cos-principle-body-col p {
  font-size: 0.925rem;
  line-height: 2;
  color: rgba(245,240,232,0.65);
}

.cos-principle-points {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 1.5rem;
}

.cos-principle-point {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-size: 0.82rem;
  color: rgba(245,240,232,0.5);
  line-height: 1.6;
}

.cos-principle-point::before {
  content: '—';
  color: var(--cos-gold);
  flex-shrink: 0;
  font-size: 0.75rem;
}

.cos-principle-future-col {
  margin-top: 1.75rem;
}

.cos-future-label {
  font-family: var(--cos-font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  color: rgba(201,168,76,0.5);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: block;
}

.cos-future-box {
  border: 1px solid rgba(201,168,76,0.2);
  padding: 1.5rem;
  background: rgba(201,168,76,0.03);
}

.cos-future-box p {
  font-size: 0.82rem;
  line-height: 1.8;
  color: rgba(245,240,232,0.55);
  margin-bottom: 1rem;
}

.cos-future-tag {
  display: inline-block;
  background: rgba(201,168,76,0.08);
  border: 1px solid rgba(201,168,76,0.2);
  color: var(--cos-gold);
  font-family: var(--cos-font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  padding: 0.3em 0.65em;
  margin: 0.2rem 0.2rem 0 0;
}


/* ================================================================
   12. EVOLUTION — 変化と不変テーブル
   ================================================================ */
.cos-evolution {
  background: var(--cos-paper-warm);
  overflow: hidden;
}

.cos-evolution::after {
  content: 'EVOLUTION';
  position: absolute;
  right: -1rem;
  bottom: 2rem;
  font-family: var(--cos-font-mono);
  font-size: clamp(4rem, 8vw, 8rem);
  font-weight: 700;
  color: rgba(10,10,15,0.028);
  white-space: nowrap;
  letter-spacing: 0.1em;
  pointer-events: none;
  line-height: 1;
}

.cos-evo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--cos-line);
  border: 1px solid var(--cos-line);
}

.cos-evo-header {
  background: var(--cos-ink);
  color: var(--cos-paper);
  padding: 1.1rem 1.5rem;
  font-family: var(--cos-font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  display: none; /* モバイルは非表示 */
}

.cos-evo-header--gold { color: var(--cos-gold); }

.cos-evo-cell {
  background: var(--cos-paper);
  padding: 1.75rem 1.5rem;
  transition: background var(--cos-transition);
}

.cos-evo-cell:hover { background: #fff; }

.cos-evo-cell--label {
  background: var(--cos-paper-warm);
}

.cos-evo-cell--label:hover { background: var(--cos-paper-warm); }

.cos-evo-cell-eyebrow {
  font-family: var(--cos-font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  color: var(--cos-gold);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: block;
}

.cos-evo-cell p {
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--cos-text-2);
  font-weight: 400;
}

.cos-evo-cell--label p {
  font-weight: 700;
  font-size: 1rem;
  color: var(--cos-ink);
}


/* ================================================================
   13. CONCEPTS — 6つの新概念
   ================================================================ */
.cos-concepts {
  background: var(--cos-paper);
}

/* Concepts 帯状バナー */
.cos-concepts-band {
  position: relative;
  width: 100%;
  overflow: hidden;
  margin-bottom: 3rem;
  aspect-ratio: 16 / 5;
  border: 1px solid var(--cos-line);
}

.cos-concepts-band-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 45%;
  filter: grayscale(15%) contrast(1.08) brightness(0.75);
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.cos-concepts-band:hover .cos-concepts-band-img {
  transform: scale(1.025);
}

.cos-concepts-band-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(10,10,15,0.72) 0%,
    rgba(10,10,15,0.35) 50%,
    rgba(26,74,74,0.20) 100%
  );
  display: flex;
  align-items: flex-end;
  padding: 1.75rem 2rem;
  pointer-events: none;
}

.cos-concepts-band-label {
  font-family: var(--cos-font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(201,168,76,0.7);
}

@media (min-width: 768px) {
  .cos-concepts-band {
    aspect-ratio: 16 / 4;
    margin-bottom: 3.5rem;
  }
  .cos-concepts-band-label {
    font-size: 0.68rem;
  }
}

.cos-concepts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--cos-line);
  border: 1px solid var(--cos-line);
}

.cos-concept-card {
  background: var(--cos-paper);
  padding: 2.5rem 2.25rem;
  position: relative;
  overflow: hidden;
  transition: background var(--cos-transition);
}

.cos-concept-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--cos-gold);
  transition: height 0.4s ease;
}

.cos-concept-card:hover { background: var(--cos-paper-warm); }
.cos-concept-card:hover::before { height: 100%; }

.cos-concept-icon {
  font-family: var(--cos-font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--cos-gold);
  margin-bottom: 1.5rem;
  display: block;
  text-transform: uppercase;
}

.cos-concept-title {
  font-family: var(--cos-font-serif);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.35;
  margin-bottom: 0.875rem;
  color: var(--cos-ink);
}

.cos-concept-desc {
  font-size: 0.82rem;
  line-height: 1.9;
  color: var(--cos-mist);
}


/* ================================================================
   14. EVIDENCE — エビデンス（ダーク）
   ================================================================ */
.cos-evidence {
  background: var(--cos-ink);
  color: var(--cos-paper);
}

.cos-ev-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid rgba(245,240,232,0.09);
  overflow-x: auto;
  scrollbar-width: none;
  margin-bottom: 0;
}

.cos-ev-tabs::-webkit-scrollbar { display: none; }

.cos-ev-tab {
  font-family: var(--cos-font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(245,240,232,0.4);
  padding: 1rem 1.75rem;
  cursor: pointer;
  border: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  background: none;
  transition: color var(--cos-transition), border-color var(--cos-transition);
  -webkit-appearance: none;
}

.cos-ev-tab:hover { color: rgba(245,240,232,0.7); }

.cos-ev-tab.is-active {
  color: var(--cos-gold);
  border-bottom-color: var(--cos-gold);
}

.cos-ev-panels {
  padding-top: 0;
}

.cos-ev-panel {
  display: none;
  animation: cos-fadeIn 0.4s ease;
}

.cos-ev-panel.is-active { display: block; }

.cos-ev-item {
  border-bottom: 1px solid rgba(245,240,232,0.055);
  padding: 2.25rem 0;
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 1.75rem;
  align-items: start;
}

.cos-ev-item:first-child { padding-top: 2.5rem; }

.cos-ev-year {
  font-family: var(--cos-font-mono);
  font-size: 0.68rem;
  color: var(--cos-gold);
  letter-spacing: 0.1em;
  padding-top: 0.2rem;
}

.cos-ev-content p {
  font-size: 0.875rem;
  line-height: 1.9;
  color: rgba(245,240,232,0.62);
  margin-bottom: 0.5rem;
}

.cos-ev-source {
  font-family: var(--cos-font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.15em;
  color: rgba(201,168,76,0.55);
  text-transform: uppercase;
}

/* ================================================================
   15-A. ARCHITECTURE — 思考OS図解セクション
   ================================================================ */
.cos-arch {
  background: var(--cos-paper);
}

.cos-arch::before {
  content: '';
  position: absolute;
  top: 0;
  left: clamp(1.5rem, 5vw, 3rem);
  right: clamp(1.5rem, 5vw, 3rem);
  height: 1px;
  background: var(--cos-line);
}

/* 図解画像ラッパー */
.cos-arch-img-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--cos-line);
  background: var(--cos-paper-warm);
}

.cos-arch-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  object-position: center;
  background: var(--cos-paper-warm);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.cos-arch-img-wrap:hover .cos-arch-img {
  transform: scale(1.015);
}

/* キャプション */
.cos-arch-caption {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem 1.75rem;
  border-top: 1px solid var(--cos-line);
  background: var(--cos-paper-warm);
}

.cos-arch-caption span:first-child {
  font-family: var(--cos-font-serif);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--cos-ink);
}

.cos-arch-caption-sub {
  font-family: var(--cos-font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.15em;
  color: var(--cos-mist);
  text-transform: uppercase;
}

@media (min-width: 768px) {
  .cos-arch-caption {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
  }
}

/* ================================================================
   15. AI UPDATE — 運用の進化
   ================================================================ */
.cos-update {
  background: var(--cos-paper);
}

.cos-update::before {
  content: '';
  position: absolute;
  top: 0;
  left: clamp(1.5rem, 5vw, 3rem);
  right: clamp(1.5rem, 5vw, 3rem);
  height: 1px;
  background: var(--cos-line);
}

.cos-update-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.cos-update-card {
  position: relative;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--cos-line);
}

.cos-update-card::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--cos-gold);
  transition: width 0.5s ease;
}

.cos-update-card:hover::after { width: 100%; }

.cos-update-old {
  font-family: var(--cos-font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--cos-mist);
  text-decoration: line-through;
  margin-bottom: 0.75rem;
  display: block;
  text-transform: uppercase;
}

.cos-update-arrow {
  color: var(--cos-gold);
  margin: 0.5rem 0;
  font-size: 1.1rem;
  display: block;
}

.cos-update-new {
  font-family: var(--cos-font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.5;
  margin-bottom: 1.25rem;
  color: var(--cos-ink);
}

.cos-update-desc {
  font-size: 0.85rem;
  line-height: 1.95;
  color: var(--cos-text-2);
}

.cos-update-tags {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.cos-tag {
  font-family: var(--cos-font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  padding: 0.25em 0.7em;
  background: var(--cos-paper-warm);
  border: 1px solid var(--cos-mist-light);
  color: var(--cos-mist);
  text-transform: uppercase;
}


/* ================================================================
   16. PHRASES — 実務フレーズ集（ダーク）
   ================================================================ */
.cos-phrases {
  background: var(--cos-ink);
  overflow: hidden;
}

.cos-phrases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: rgba(245,240,232,0.055);
  border: 1px solid rgba(245,240,232,0.055);
}

.cos-phrase-card {
  background: var(--cos-ink);
  padding: 3rem 2.5rem;
  position: relative;
  overflow: hidden;
}

.cos-phrase-num {
  font-family: var(--cos-font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  color: rgba(201,168,76,0.38);
  margin-bottom: 1.75rem;
  display: block;
  text-transform: uppercase;
}

.cos-phrase-old {
  font-family: var(--cos-font-serif);
  font-size: 0.875rem;
  color: rgba(245,240,232,0.28);
  text-decoration: line-through;
  margin-bottom: 1.25rem;
  line-height: 1.5;
  display: block;
}

.cos-phrase-new {
  font-family: var(--cos-font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--cos-paper);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.cos-phrase-new span { color: var(--cos-gold); }

.cos-phrase-bar {
  width: 36px;
  height: 2px;
  background: var(--cos-gold);
}


/* ================================================================
   17. CTA SECTION — 刷新版
   ================================================================ */
.cos-cta-section {
  background: var(--cos-ink-soft);
  overflow: hidden;
  text-align: center;
  /* 上下余白を大幅に拡充 — ボタンが"場"を持つ空間設計 */
  padding-block: clamp(6rem, 12vw, 11rem);
  position: relative;
}

/* 背景：多層グラデーション＋装飾効果 */
.cos-cta-section__bg {
  position: absolute;
  inset: 0;
  background:
    /* 中央の金色オーラ */
    radial-gradient(ellipse 90% 70% at 50% 50%,  rgba(201,168,76,0.09) 0%,  transparent 65%),
    /* 左上のティール反射 */
    radial-gradient(ellipse 60% 50% at  5% 10%,  rgba(26,74,74,0.18)   0%,  transparent 55%),
    /* 右下のアンバー残光 */
    radial-gradient(ellipse 55% 45% at 95% 90%,  rgba(201,168,76,0.06) 0%,  transparent 50%);
  pointer-events: none;
}

/* 装飾ライン — 上下に金色の細線を引いて"格"を表現 */
.cos-cta-section__bg::before,
.cos-cta-section__bg::after {
  content: '';
  position: absolute;
  left: clamp(2rem, 10vw, 8rem);
  right: clamp(2rem, 10vw, 8rem);
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    rgba(201,168,76,0.25) 20%,
    rgba(201,168,76,0.25) 80%,
    transparent
  );
}
.cos-cta-section__bg::before { top: 0; }
.cos-cta-section__bg::after  { bottom: 0; }

.cos-cta-inner {
  position: relative;
  z-index: 2;
}

/* アイブロウ（FREE REPORT） */
.cos-cta-eyebrow {
  font-family: var(--cos-font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.45em;          /* 字間を広げて高級感アップ */
  text-transform: uppercase;
  color: rgba(201,168,76,0.70);
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;         /* 確実に中央配置 */
  gap: 1.5rem;
}

/* アイブロウ左右の装飾細線 */
.cos-cta-eyebrow::before,
.cos-cta-eyebrow::after {
  content: '';
  display: block;
  width: clamp(2rem, 5vw, 4rem);
  height: 1px;
  background: rgba(201,168,76,0.35);
  flex-shrink: 0;
}

/* タイトル（思考OSを手に入れ...） */
.cos-cta-title {
  font-family: var(--cos-font-serif);
  font-weight: 900;
  font-size: clamp(2.1rem, 5vw, 3.75rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--cos-paper);
  /* タイトルとdescの間に充分な余白 */
  margin-bottom: 3rem;
}

.cos-cta-title span { color: var(--cos-gold); }

/* ディスクリプション（評論しない・批評しない...）— 左ズレ完全修正 */
.cos-cta-desc {
  font-size: 0.95rem;
  line-height: 2.1;
  color: rgba(245,240,232,0.55);
  max-width: 560px;
  /* 左右中央 — Cocoon の entry-content 干渉を完全上書き */
  margin-inline: auto;
  margin-left: auto !important;
  margin-right: auto !important;
  /* 上下余白：タイトルとの間 & ボタンラップとの間をしっかり確保 */
  margin-top: 0;
  margin-bottom: 0;
  padding-block: 0;
  /* テキスト中央揃え — 親継承に頼らず自身に明示 */
  text-align: center !important;
  /* ブロック化で margin-inline を確実に有効化 */
  display: block;
  /* Cocoon のワード折り返し干渉を排除 */
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* ボタンラップ — 充分な上余白とCTA導線 */
.cos-cta-btn-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding-top: 3.5rem;            /* descとボタン間の"呼吸"空間 */
  position: relative;
}

/* ボタン上部の装飾細線（視線をボタンへ誘導） */
.cos-cta-btn-wrap::before {
  content: '';
  display: block;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 2.25rem;
  background: linear-gradient(to bottom, transparent, rgba(201,168,76,0.45));
}

/* サブテキスト（無料レポートNo. TP0014） */
.cos-cta-sub {
  font-family: var(--cos-font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.22em;
  color: rgba(201,168,76,0.42);
  text-transform: uppercase;
  display: block;
  text-align: center;
}

/* ボタン下部の補足テキスト（安心感のトリガー） */
.cos-cta-section .cos-cta-reassure {
  margin-top: 1.5rem;
  font-family: var(--cos-font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.15em;
  color: rgba(245,240,232,0.22);
  text-align: center;
  display: block;
}


/* ================================================================
   18. CLOSING — 結論（トップブリード構造）
   ================================================================ */
.cos-closing {
  background: var(--cos-paper);
  text-align: center;
  padding: 0;
  overflow: hidden;
}

/* ── トップブリード画像エリア ── */
.cos-closing-top-bleed {
  position: relative;
  width: 100%;
  height: clamp(240px, 38vw, 520px);
  overflow: hidden;
}

.cos-closing-bleed-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 18%;
  filter: grayscale(22%) contrast(1.18) brightness(0.78) sepia(10%);
  transition: transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.cos-closing:hover .cos-closing-bleed-img {
  transform: scale(1.02);
}

.cos-closing-bleed-fade {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10,10,15,0.08)  0%,
    transparent          25%,
    transparent          45%,
    rgba(245,240,232,0.5) 72%,
    var(--cos-paper)     100%
  );
  pointer-events: none;
}

/* ── テキストエリア ── */
.cos-closing-text-area {
  position: relative;
  /* 上: 画像フェードから十分なスペース / 下: CTAセクションへ流れるよう余裕を持たせる */
  padding-top: clamp(4.5rem, 9vw, 8rem);
  padding-bottom: clamp(5rem, 10vw, 9rem);
}

.cos-closing-bg-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--cos-font-serif);
  font-weight: 900;
  font-size: clamp(10rem, 22vw, 22rem);
  color: rgba(10,10,15,0.022);
  white-space: nowrap;
  pointer-events: none;
  line-height: 1;
  user-select: none;
  z-index: 0;
}

.cos-closing-inner {
  position: relative;
  z-index: 2;
  max-width: 780px;
  margin: 0 auto;
}

.cos-closing-eyebrow {
  font-family: var(--cos-font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--cos-gold);
  margin-bottom: 2.5rem;
  display: block;
}

.cos-closing-title {
  font-family: var(--cos-font-serif);
  font-weight: 900;
  font-size: clamp(2.5rem, 6vw, 4.75rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin-bottom: 2.5rem;
  color: var(--cos-ink);
}

.cos-closing-title span { color: var(--cos-gold); }

.cos-closing-text {
  font-size: 1rem;
  line-height: 2.1;
  color: rgba(10,10,15,0.58);
  margin-bottom: 3.5rem;
}

.cos-closing-text strong {
  color: var(--cos-ink);
  font-weight: 700;
}

.cos-closing-rule {
  width: 1px;
  height: 56px;
  background: var(--cos-gold);
  margin: 0 auto;
}


/* ================================================================
   19. ANIMATIONS
   ================================================================ */
@keyframes cos-fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes cos-scaleIn {
  from { opacity: 0; transform: scaleX(0); }
  to   { opacity: 1; transform: scaleX(1); }
}

@keyframes cos-fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes cos-scrollLine {
  0%, 100% { opacity: 0.35; transform: scaleX(1); }
  50%       { opacity: 0.7;  transform: scaleX(1.5); }
}

@keyframes cos-pulse {
  0%, 100% { opacity: 1;   transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(1.4); }
}


/* ================================================================
   20. RESPONSIVE — タブレット 768px+
   ================================================================ */
@media (min-width: 768px) {

  .cos-foundation-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4.5rem;
    align-items: start;
  }

  .cos-evo-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .cos-evo-header { display: block; }

  .cos-concepts-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cos-update-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .cos-phrases-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cos-ev-item {
    grid-template-columns: 80px 1fr;
  }

  .cos-principle-row {
    grid-template-columns: 60px auto 1fr;
    gap: 0;
    padding: 4rem 0;
  }

  .cos-principle-num {
    padding: 0 0 0 clamp(1.5rem, 5vw, 2.5rem);
    padding-top: 0.3rem;
  }

  .cos-principle-title-col {
    padding-right: 3vw;
    padding-left: 2rem;
    min-width: 200px;
  }

  .cos-principle-body-col {
    padding-right: clamp(1.5rem, 5vw, 2.5rem);
  }

  .cos-principle-future-col {
    display: none; /* デスクトップで表示 */
    margin-top: 0;
    padding-right: clamp(1.5rem, 5vw, 2.5rem);
  }

  .cos-principle-origin { margin-bottom: 0; }
}


/* ================================================================
   21. RESPONSIVE — デスクトップ 1024px+
   ================================================================ */
@media (min-width: 1024px) {

  .cos-principle-row {
    grid-template-columns: 7vw 1fr 1fr 1fr;
  }

  .cos-principle-num {
    padding-left: 7vw;
  }

  .cos-principle-title-col {
    padding-right: 4vw;
    padding-left: 0;
  }

  .cos-principle-body-col {
    padding-right: 4vw;
  }

  .cos-principle-future-col {
    display: block;
    padding-right: 7vw;
  }

  .cos-concepts-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .cos-update-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .cos-phrases-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}