/*
 * DAISEN インデックスページ スタイルシート
 * daisen-index/daisen-index.css
 *
 * 読み込み順序（daisen-index.php 内）:
 *   1. daisen-general/daisen-general.css  ← ヘッダー・フッター共通
 *   2. footer/footer.css                  ← グローバルフッター
 *   3. daisen-index/daisen-index.css      ← 本ファイル（上書き含む）
 *
 * クラス命名規則: di- プレフィックス（daisen-index の略）
 * スコープ:       body.daisen-index 内部のみに影響
 */


/* ══════════════════════════════════════════════
   DESIGN TOKENS — INDEX専用カラーパレット
══════════════════════════════════════════════ */
:root {
  /* 基調色 */
  --di-ink:         #06070D;
  --di-ink-mid:     #0B0C16;
  --di-ink-soft:    #111320;
  --di-snow:        #F0EBE0;
  --di-snow-dim:    #C4BEAD;
  --di-ash:         #857D6E;
  --di-stone:       #555048;
  --di-gold:        #C9A84C;
  --di-rule:        rgba(201,168,76,0.16);
  --di-rule-s:      rgba(201,168,76,0.07);

  /* 各領域カラー */
  --di-fcs:         #D08B30;
  --di-fcs-rgb:     208,139,48;
  --di-si:          #28BFA6;
  --di-si-rgb:      40,191,166;
  --di-psd:         #3A7BD5;
  --di-psd-rgb:     58,123,213;
  --di-nexus:       #9B6DDB;
  --di-nexus-rgb:   155,109,219;
  --di-log:         #C9A84C;
  --di-log-rgb:     201,168,76;
  --di-origin:      #A8B8C4;
  --di-origin-rgb:  168,184,196;

  /* アニメーション */
  --di-ease:        cubic-bezier(0.22, 1, 0.36, 1);
}


/* ══════════════════════════════════════════════
   BODY — ダークテーマ全体を上書き
══════════════════════════════════════════════ */
body.daisen-index {
  background: var(--di-ink);
  color: var(--di-snow);
  font-family: 'Noto Serif JP', 'Noto Sans JP', serif;
  font-weight: 300;
  overflow-x: hidden;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* スクロールバー */
body.daisen-index ::-webkit-scrollbar          { width: 2px; }
body.daisen-index ::-webkit-scrollbar-track    { background: var(--di-ink); }
body.daisen-index ::-webkit-scrollbar-thumb    { background: var(--di-gold); border-radius: 1px; }

/* Cocoon等が挿入するデフォルト背景をリセット */
body.daisen-index #wrapper,
body.daisen-index #container,
body.daisen-index #contents {
  background: transparent !important;
  padding: 0 !important;
  margin: 0 !important;
  max-width: none !important;
  width: 100% !important;
}

/* フィルムグレイン・ノイズオーバーレイ */
body.daisen-index::after {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9900;
  opacity: 0.3;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
}


/* ══════════════════════════════════════════════
   PROGRESS BAR — スクロール進捗
══════════════════════════════════════════════ */
#di-prog {
  position: fixed;
  top: 0; left: 0;
  height: 1.5px;
  width: 0%;
  background: linear-gradient(
    90deg,
    var(--di-fcs),
    var(--di-si),
    var(--di-psd),
    var(--di-nexus),
    var(--di-log),
    var(--di-origin)
  );
  z-index: 9800;
  transition: width 0.1s linear;
}


/* ══════════════════════════════════════════════
   PAGE HEADER — INDEXタイトルブロック
══════════════════════════════════════════════ */
.di-page-header {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--di-rule-s);
}

/* 背景レイヤー */
.di-page-header-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 80% at 0% 50%,
      rgba(var(--di-fcs-rgb), 0.055) 0%, transparent 55%),
    radial-gradient(ellipse 50% 60% at 100% 50%,
      rgba(var(--di-origin-rgb), 0.045) 0%, transparent 55%),
    linear-gradient(180deg, var(--di-ink-mid) 0%, var(--di-ink) 100%);
}

/* グリッドライン */
.di-page-header-bg::before {
  content: '';
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(
    180deg,
    transparent 0px, transparent 79px,
    rgba(201,168,76,0.04) 79px, rgba(201,168,76,0.04) 80px
  );
}

/* インナーグリッド */
.di-page-header-inner {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 3rem;
  max-width: 1100px;
  margin: 0 auto;
  padding:
    clamp(4rem, 10vh, 8rem)
    clamp(2rem, 5vw, 5rem)
    clamp(3rem, 6vh, 5rem);
}

/* ── パンくず ── */
.di-breadcrumb {
  font-family: 'DM Mono', 'Montserrat', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: rgba(201,168,76,0.45);
  margin-bottom: 2.2rem;
  text-transform: uppercase;
}
.di-breadcrumb a {
  color: rgba(201,168,76,0.45);
  text-decoration: none;
  transition: color 0.3s;
}
.di-breadcrumb a:hover { color: rgba(201,168,76,0.85); }
.di-breadcrumb span[aria-hidden] { margin: 0 6px; }

/* ── アイブロウ ── */
.di-header-eyebrow {
  display: flex; align-items: center; gap: 1rem;
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: dieFadeUp 0.8s 0.15s ease forwards;
}
.di-eyebrow-line {
  width: 28px; height: 1px;
  background: var(--di-gold);
  flex-shrink: 0;
}
.di-eyebrow-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.45em;
  color: var(--di-gold);
}

/* ── メインタイトル ── */
.di-header-title {
  font-family: 'Cinzel', 'Montserrat', serif;
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 0.95;
  color: var(--di-snow);
  margin-bottom: 1.2rem;
  opacity: 0;
  animation: dieFadeUp 1.1s 0.3s var(--di-ease) forwards;
}

/* ── サブタイトル ── */
.di-header-subtitle {
  font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
  font-style: italic;
  font-weight: 300;
  font-size: clamp(1rem, 2.2vw, 1.4rem);
  letter-spacing: 0.25em;
  color: var(--di-ash);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: dieFadeUp 0.8s 0.55s ease forwards;
}

/* ── リード文 ── */
.di-header-lead {
  font-size: clamp(0.88rem, 1.5vw, 0.98rem);
  font-weight: 300;
  color: var(--di-snow-dim);
  letter-spacing: 0.08em;
  line-height: 2.3;
  max-width: 580px;
  opacity: 0;
  animation: dieFadeUp 0.8s 0.7s ease forwards;
}

/* ── ドメイン数 装飾（右） ── */
.di-header-right {
  text-align: right;
  opacity: 0;
  animation: dieFadeIn 1.2s 1s ease forwards;
}
.di-domains-num {
  font-family: 'Cinzel', serif;
  font-size: clamp(6rem, 14vw, 12rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(201,168,76,0.06);
  display: block;
  user-select: none;
}
.di-domains-lbl {
  font-family: 'DM Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.5em;
  color: var(--di-stone);
  display: block;
  margin-top: 0.4rem;
}

/* ── スペクトルライン（6色グラデーション） ── */
.di-header-spectrum {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(
    to right,
    var(--di-fcs)    0%,      var(--di-fcs)    16.66%,
    var(--di-si)     16.66%,  var(--di-si)     33.33%,
    var(--di-psd)    33.33%,  var(--di-psd)    50%,
    var(--di-nexus)  50%,     var(--di-nexus)  66.66%,
    var(--di-log)    66.66%,  var(--di-log)    83.33%,
    var(--di-origin) 83.33%,  var(--di-origin) 100%
  );
  opacity: 0.55;
}


/* ══════════════════════════════════════════════
   CATEGORY LIST — カード一覧コンテナ
══════════════════════════════════════════════ */
.di-cat-list {
  max-width: 1100px;
  margin: 0 auto;
  padding:
    clamp(2rem, 4vh, 3rem)
    clamp(2rem, 5vw, 5rem)
    clamp(5rem, 10vh, 8rem);
}


/* ══════════════════════════════════════════════
   CAT CARD — カード共通（縦読み構造）
   ① 番号＋タイトル → ② 説明 → ③ CTA → ④ ビジュアル
══════════════════════════════════════════════ */
.di-cat-card {
  display: block;
  text-decoration: none;
  color: inherit;
  position: relative;
  padding: 3rem 0;
  border-bottom: 1px solid var(--di-rule-s);
  cursor: pointer;
  transition: background 0.4s;
  -webkit-tap-highlight-color: transparent;
}
.di-cat-card + .di-cat-card { margin-top: 1rem; }
.di-cat-card:first-child      { border-top: 1px solid var(--di-rule-s); }

/* 左端アクセントバー */
.di-cat-card::before {
  content: '';
  position: absolute;
  top: 0; left: -2px;
  width: 2px; height: 0;
  transition: height 0.6s var(--di-ease);
}
.di-cat-card:hover::before { height: 100%; }


/* ── ① 番号 + タイトル ── */
.di-cat-card__header-row {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  margin-bottom: 1.8rem;
}

.di-cat-num {
  font-family: 'DM Mono', monospace;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  line-height: 1;
  color: rgba(201,168,76,0.15);
  flex-shrink: 0;
  user-select: none;
  transition: color 0.4s;
  margin-top: 0.15em;
}
.di-cat-card:hover .di-cat-num { color: rgba(201,168,76,0.38); }

.di-cat-card__head-right { flex: 1; min-width: 0; }

.di-cat-code-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.6rem;
}
.di-cat-code {
  font-family: 'DM Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.55em;
  transition: color 0.4s;
}
.di-cat-code-dash {
  height: 1px;
  background: currentColor;
  opacity: 0.25;
  width: 60px;
  flex-shrink: 0;
  transition: width 0.5s var(--di-ease), opacity 0.5s;
}
.di-cat-card:hover .di-cat-code-dash { width: 120px; opacity: 0.45; }

.di-cat-title-jp {
  font-family: 'Shippori Mincho', 'Noto Serif JP', serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.25;
  color: var(--di-snow);
  margin-bottom: 0.3rem;
}
.di-cat-title-en {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  font-weight: 300;
  font-size: clamp(0.9rem, 1.6vw, 1.1rem);
  letter-spacing: 0.22em;
  color: var(--di-ash);
}


/* ── ② 説明 ── */
.di-cat-desc {
  font-size: clamp(0.88rem, 1.4vw, 0.97rem);
  font-weight: 300;
  color: var(--di-ash);
  line-height: 2.3;
  letter-spacing: 0.07em;
  max-width: 720px;
  margin-bottom: 0.8rem;
}
.di-cat-desc strong {
  color: var(--di-snow-dim);
  font-weight: 400;
}

/* LOG ストリームタグ */
.di-log-stream-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}
.di-log-stag {
  font-family: 'DM Mono', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.3em;
  color: var(--di-stone);
  border: 1px solid var(--di-rule-s);
  padding: 0.2rem 0.7rem;
  transition: border-color 0.3s, color 0.3s;
}
.di-cat-card--log:hover .di-log-stag {
  border-color: var(--di-rule);
  color: var(--di-ash);
}

/* ORIGIN データ行 */
.di-origin-data-row {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  margin-top: 1.2rem;
}
.di-origin-datum {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.di-od-num {
  font-family: 'Cinzel', serif;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1;
}
.di-od-lbl {
  font-family: 'DM Mono', monospace;
  font-size: 0.54rem;
  letter-spacing: 0.32em;
  color: var(--di-stone);
}


/* ── ③ CTA フッター ── */
.di-cat-card__foot {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--di-rule-s);
  flex-wrap: wrap;
}

/* メインボタン — スライドインフィル */
.di-cat-btn-main {
  font-family: 'Cinzel', serif;
  font-size: 0.62rem;
  letter-spacing: 0.4em;
  text-decoration: none;
  color: inherit;
  padding: 0.75rem 1.8rem;
  border: 1px solid currentColor;
  display: inline-block;
  position: relative;
  overflow: hidden;
  transition: color 0.35s;
  white-space: nowrap;
}
.di-cat-btn-main::before {
  content: '';
  position: absolute; inset: 0;
  background: currentColor;
  transform: translateX(-102%);
  transition: transform 0.45s var(--di-ease);
}
.di-cat-btn-main:hover::before  { transform: translateX(0); }
.di-cat-btn-main span           { position: relative; z-index: 1; }
.di-cat-btn-main:hover span     { color: var(--di-ink); }

/* サブボタン — 矢印スライド */
.di-cat-btn-sub {
  font-family: 'DM Mono', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.32em;
  text-decoration: none;
  color: var(--di-stone);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.3s;
  white-space: nowrap;
}
.di-cat-btn-sub::after          { content: '→'; transition: transform 0.3s; }
.di-cat-btn-sub:hover           { color: var(--di-ash); }
.di-cat-btn-sub:hover::after    { transform: translateX(6px); }


/* ── ④ ビジュアル ── */
.di-cat-card__visual {
  position: relative;
  height: 280px;
  margin-top: 2.5rem;
  overflow: hidden;
}

/* 画像レイヤー */
.di-cat-card__img {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 1s var(--di-ease);
  will-change: transform;
}
.di-cat-card:hover .di-cat-card__img { transform: scale(1.04); }

/* ダークベール */
.di-cat-card__veil {
  position: absolute; inset: 0;
  background: rgba(6,7,13,0.52);
  transition: background 0.5s;
}
.di-cat-card:hover .di-cat-card__veil { background: rgba(6,7,13,0.35); }

/* カラーフラッド */
.di-cat-card__color-flood {
  position: absolute; inset: 0;
  opacity: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
}
.di-cat-card:hover .di-cat-card__color-flood { opacity: 1; }

/* ビジュアル内ラベル（右下） */
.di-cat-card__visual-label {
  position: absolute;
  bottom: 1.5rem; right: 2rem;
  z-index: 5;
  text-align: right;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.5s 0.1s, transform 0.5s 0.1s;
}
.di-cat-card:hover .di-cat-card__visual-label { opacity: 1; transform: translateY(0); }

.di-vis-lbl-en {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic; font-weight: 300;
  font-size: 0.88rem; letter-spacing: 0.2em;
  color: var(--di-snow-dim);
  display: block; margin-bottom: 0.25rem;
}
.di-vis-lbl-arrow {
  font-family: 'Cinzel', serif;
  font-size: 0.58rem; letter-spacing: 0.4em;
  display: block;
}

/* 上端アクセントライン スウィープ */
.di-cat-card__accent-line {
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 2px;
  transition: width 0.7s var(--di-ease);
  z-index: 10;
  pointer-events: none;
}
.di-cat-card:hover .di-cat-card__accent-line { width: 100%; }


/* ══════════════════════════════════════════════
   PER-CARD カラー定義
══════════════════════════════════════════════ */

/* FCS */
.di-cat-card--fcs::before,
.di-cat-card--fcs .di-cat-card__accent-line  { background: var(--di-fcs); }
.di-cat-card--fcs .di-cat-code,
.di-cat-card--fcs .di-cat-code-dash          { color: var(--di-fcs); }
.di-cat-card--fcs .di-cat-btn-main           { color: var(--di-fcs); }
.di-cat-card--fcs .di-vis-lbl-arrow          { color: var(--di-fcs); }
.di-cat-card--fcs .di-cat-card__color-flood  {
  background: linear-gradient(160deg, rgba(var(--di-fcs-rgb),.15) 0%, transparent 60%);
}

/* SI */
.di-cat-card--si::before,
.di-cat-card--si .di-cat-card__accent-line   { background: var(--di-si); }
.di-cat-card--si .di-cat-code,
.di-cat-card--si .di-cat-code-dash           { color: var(--di-si); }
.di-cat-card--si .di-cat-btn-main            { color: var(--di-si); }
.di-cat-card--si .di-vis-lbl-arrow           { color: var(--di-si); }
.di-cat-card--si .di-cat-card__color-flood   {
  background: linear-gradient(160deg, rgba(var(--di-si-rgb),.15) 0%, transparent 60%);
}

/* PSD */
.di-cat-card--psd::before,
.di-cat-card--psd .di-cat-card__accent-line  { background: var(--di-psd); }
.di-cat-card--psd .di-cat-code,
.di-cat-card--psd .di-cat-code-dash          { color: var(--di-psd); }
.di-cat-card--psd .di-cat-btn-main           { color: var(--di-psd); }
.di-cat-card--psd .di-vis-lbl-arrow          { color: var(--di-psd); }
.di-cat-card--psd .di-cat-card__color-flood  {
  background: linear-gradient(160deg, rgba(var(--di-psd-rgb),.15) 0%, transparent 60%);
}

/* NEXUS */
.di-cat-card--nexus::before,
.di-cat-card--nexus .di-cat-card__accent-line { background: var(--di-nexus); }
.di-cat-card--nexus .di-cat-code,
.di-cat-card--nexus .di-cat-code-dash         { color: var(--di-nexus); }
.di-cat-card--nexus .di-cat-btn-main          { color: var(--di-nexus); }
.di-cat-card--nexus .di-vis-lbl-arrow         { color: var(--di-nexus); }
.di-cat-card--nexus .di-cat-card__color-flood {
  background: linear-gradient(160deg, rgba(var(--di-nexus-rgb),.15) 0%, transparent 60%);
}

/* LOG */
.di-cat-card--log::before,
.di-cat-card--log .di-cat-card__accent-line  { background: var(--di-log); }
.di-cat-card--log .di-cat-code,
.di-cat-card--log .di-cat-code-dash          { color: var(--di-log); }
.di-cat-card--log .di-cat-btn-main           { color: var(--di-log); }
.di-cat-card--log .di-vis-lbl-arrow          { color: var(--di-log); }
.di-cat-card--log .di-cat-card__color-flood  {
  background: linear-gradient(160deg, rgba(var(--di-log-rgb),.12) 0%, transparent 60%);
}

/* ORIGIN */
.di-cat-card--origin::before,
.di-cat-card--origin .di-cat-card__accent-line { background: var(--di-origin); }
.di-cat-card--origin .di-cat-code,
.di-cat-card--origin .di-cat-code-dash         { color: var(--di-origin); }
.di-cat-card--origin .di-cat-btn-main          { color: var(--di-origin); }
.di-cat-card--origin .di-vis-lbl-arrow         { color: var(--di-origin); }
.di-cat-card--origin .di-cat-card__color-flood {
  background: linear-gradient(160deg, rgba(var(--di-origin-rgb),.12) 0%, transparent 60%);
}


/* ══════════════════════════════════════════════
   LOG — アブストラクトビジュアル
══════════════════════════════════════════════ */
.di-log-visual-abstract {
  position: absolute; inset: 0;
  overflow: hidden;
  background: var(--di-ink-soft);
}

/* グリッド流れ */
.di-log-vis-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(201,168,76,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201,168,76,0.07) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: diGridDrift 25s linear infinite;
}
@keyframes diGridDrift {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(40px, 40px); }
}

/* ストリームアイテム群 */
.di-log-vis-streams {
  position: absolute; inset: 0;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: 2rem;
}
.di-log-vis-stream-item {
  font-family: 'DM Mono', monospace;
  font-size: clamp(0.6rem, 1.1vw, 0.72rem);
  letter-spacing: 0.35em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  opacity: 0.3;
  transition: transform 0.4s ease, opacity 0.4s ease;
}
.di-cat-card--log:hover .di-log-vis-stream-item               { opacity: 0.75; }
.di-cat-card--log:hover .di-log-vis-stream-item:nth-child(1)  { transform: translateY(-4px); transition-delay: 0.00s; }
.di-cat-card--log:hover .di-log-vis-stream-item:nth-child(2)  { transform: translateY(-4px); transition-delay: 0.07s; }
.di-cat-card--log:hover .di-log-vis-stream-item:nth-child(3)  { transform: translateY(-4px); transition-delay: 0.14s; }
.di-cat-card--log:hover .di-log-vis-stream-item:nth-child(4)  { transform: translateY(-4px); transition-delay: 0.21s; }

.di-log-vs-dot  { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.di-log-vs-name { color: var(--di-snow-dim); }


/* ══════════════════════════════════════════════
   ORIGIN — 山岳ビジュアル
══════════════════════════════════════════════ */
.di-origin-visual-wrap {
  position: absolute; inset: 0;
  background: linear-gradient(160deg, #06090E 0%, #090E16 50%, #0A1018 100%);
}

/* 星空 */
.di-origin-vis-stars { position: absolute; inset: 0; overflow: hidden; }
.di-origin-star {
  position: absolute;
  border-radius: 50%;
  background: var(--di-snow-dim);
  animation: diTwinkle var(--d, 3s) ease-in-out infinite var(--dd, 0s);
}
@keyframes diTwinkle {
  0%, 100% { opacity: 0.08; }
  50%       { opacity: 0.65; }
}

/* 山シルエット */
.di-origin-vis-mountain {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 78%;
}
.di-origin-vis-mountain svg { width: 100%; height: 100%; display: block; }

/* DAISEN バッジ */
.di-origin-ai-badge {
  position: absolute;
  top: 1.5rem; left: 2rem;
  z-index: 5;
  font-family: 'Cinzel', serif;
  font-size: clamp(1rem, 2vw, 1.6rem);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: rgba(168,184,196,0.14);
  user-select: none;
}
.di-ai-part { color: rgba(168,184,196,0.45); }


/* ══════════════════════════════════════════════
   SCROLL REVEAL — 登場アニメーション
══════════════════════════════════════════════ */
.di-reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity  0.85s var(--di-ease),
    transform 0.85s var(--di-ease);
}
.di-reveal.di-in { opacity: 1; transform: none; }

/* ディレイ バリエーション */
.di-reveal.di-d1 { transition-delay: 0.06s; }
.di-reveal.di-d2 { transition-delay: 0.12s; }
.di-reveal.di-d3 { transition-delay: 0.18s; }
.di-reveal.di-d4 { transition-delay: 0.24s; }
.di-reveal.di-d5 { transition-delay: 0.30s; }


/* ══════════════════════════════════════════════
   KEYFRAMES
══════════════════════════════════════════════ */
@keyframes dieFadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: none; }
}
@keyframes dieFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}


/* ══════════════════════════════════════════════
   RESPONSIVE — タブレット（〜760px）
══════════════════════════════════════════════ */
@media (max-width: 760px) {

  .di-page-header-inner {
    grid-template-columns: 1fr;
  }
  .di-header-right { display: none; }

  .di-cat-card__header-row { gap: 1.2rem; }
  .di-cat-num { font-size: 1.8rem; }

  .di-cat-card__visual { height: 220px; }
  .di-log-vis-streams  { flex-wrap: wrap; }

  .di-cat-card__foot   { gap: 1.2rem; }

}


/* ══════════════════════════════════════════════
   RESPONSIVE — スマートフォン（〜480px）
══════════════════════════════════════════════ */
@media (max-width: 480px) {

  .di-cat-card         { padding: 2rem 0; }
  .di-cat-card__visual { height: 180px; }

  .di-cat-card__head-right { min-width: 0; }
  .di-cat-title-jp         { font-size: 1.6rem; }

  .di-cat-card__foot       { flex-direction: column; align-items: flex-start; gap: 1rem; }

  .di-origin-data-row      { gap: 1.5rem; }

  /* パンくず非表示（狭いと読みにくいため） */
  .di-breadcrumb { display: none; }

}


/* ══════════════════════════════════════════════
   COCOON / WordPress デフォルトスタイル 無効化
   （body.daisen-index スコープ内のみ対象）
══════════════════════════════════════════════ */
body.daisen-index .entry-title,
body.daisen-index .post-title,
body.daisen-index .page-title {
  display: none !important;
}

body.daisen-index #breadcrumb,
body.daisen-index .breadcrumb-wrap,
body.daisen-index .crumb-wrap {
  display: none !important;
}

/* Cocoonが付与するパディングをリセット */
body.daisen-index #main,
body.daisen-index .main,
body.daisen-index #content {
  padding: 0 !important;
  max-width: none !important;
}

/* ══════════════════════════════════════════════
   INDEX: ヘッダーナビ 下線非表示
   LINE / WebKit 系ブラウザへのベンダープレフィックス対応
══════════════════════════════════════════════ */
body.daisen-index .dg-header__logo,
body.daisen-index .dg-header__nav a,
body.daisen-index .dg-header__cta {
  text-decoration: none !important;
  -webkit-text-decoration: none !important;
}
body.daisen-index .dg-header__logo:hover,
body.daisen-index .dg-header__logo:visited,
body.daisen-index .dg-header__nav a:hover,
body.daisen-index .dg-header__nav a:visited,
body.daisen-index .dg-header__cta:hover,
body.daisen-index .dg-header__cta:visited {
  text-decoration: none !important;
  -webkit-text-decoration: none !important;
}

/* ══════════════════════════════════════════════
   INDEX: モバイルメニュー（ハンバーガー展開時）
   daisen-general.css の is-open スタイルを
   daisen-index スコープ内で明示的に上書き
   ※ LINE ブラウザ / WebKit 継承漏れ対策
══════════════════════════════════════════════ */
@media (max-width: 900px) {
  body.daisen-index .dg-header__nav {
    display: none !important;
  }
  body.daisen-index .dg-header__toggle {
    display: flex !important;
  }
  body.daisen-index .dg-header__nav.is-open {
    display: flex !important;
    flex-direction: column !important;
    position: fixed !important;
    top: 64px !important;
    left: 0 !important;
    right: 0 !important;
    background: rgba(8, 8, 15, 0.98) !important;
    border-bottom: 1px solid rgba(42, 42, 66, 1) !important;
    padding: 20px 24px !important;
    gap: 4px !important;
    z-index: 9999 !important; /* LINE WebKit では9999以上が安全 */
    -webkit-overflow-scrolling: touch !important;
  }
  body.daisen-index .dg-header__nav.is-open a {
    display: block !important;
    padding: 12px 16px !important;
    font-size: 0.9rem !important;
    color: #e8e8f4 !important;
    text-decoration: none !important;
    -webkit-text-decoration: none !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06) !important;
  }
  body.daisen-index .dg-header__nav.is-open a:last-child {
    border-bottom: none !important;
  }
  body.daisen-index .dg-header__nav.is-open .dg-header__cta {
    display: flex !important;
    margin: 8px 16px 4px !important;
    padding: 12px 20px !important;
    justify-content: center !important;
    font-size: 0.85rem !important;
    border-radius: 12px !important;
    width: calc(100% - 32px) !important;
    text-decoration: none !important;
    -webkit-text-decoration: none !important;
    color: #fff !important;
  }
}