@charset "utf-8";

/*
concept.html 専用スタイル
-------------------------------------------
*/

/* ===== カラー変数 ===== */
body.concept-page {
  --c-navy: #15394a;
  --c-navy-deep: #0c2030;
  --c-navy-darker: #082031;
  --c-blue: #1d4760;
  --c-blue-mid: #2d617c;
  --c-cyan: #11bbdd;
  --c-cyan-soft: #71f0bd;
  --c-stone: #e3edf2;
  --c-stone-mid: #c5d3da;
  --c-stone-deep: #94a7b3;
  --c-bg: #f2f6f7;
  --c-bg-soft: #f7fbfc;
  --c-text: #15394a;
  --c-text-soft: #2a3b44;
  --c-text-mid: #455a66;
  --c-line: #d8e1e4;
  --c-line-soft: #e3eaee;
  --c-gold: #b89968;
  --c-brand-logo: #0a4f97;
  --c-brand-contact: #180985;
  --c-accent: #0a4f97;
  --c-accent-soft: #3a7ec4;

  background-color: var(--c-bg);
  color: var(--c-text);
  /* 横スクロール抑止：clip 非対応ブラウザは hidden にフォールバック */
  overflow-x: hidden;
  overflow-x: clip;
}

body.concept-page ::selection {
  background: var(--c-cyan);
  color: #fff;
}

/* background-clip: text 非対応ブラウザ向けのフォールバック。
   非対応時は文字が透明になりっぱなしのまま背景に白いブロックが残るため、
   通常のテキスト色で表示する */
@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  body.concept-page .concept-local-nav__title-en,
  body.concept-page .concept-origin__article-en,
  body.concept-page .concept-cta__heading-line--accent,
  body.concept-page .concept-lineage__word--brand {
    background: none !important;
    -webkit-text-fill-color: currentColor !important;
    color: var(--c-cyan);
  }
  body.concept-page .concept-cta__heading-line--accent {
    color: #71f0bd;
  }
}

/* 明朝指定 */
body.concept-page .concept-hero__title,
body.concept-page .concept-hero__copy,
body.concept-page .concept-hero__lead,
body.concept-page .concept-section__title,
body.concept-page .concept-section__lead,
body.concept-page .concept-origin__article-jp,
body.concept-page .concept-origin__chapter-title,
body.concept-page .concept-philosophy__center-message,
body.concept-page .concept-philosophy__card-title,
body.concept-page .concept-what__card h3,
body.concept-page .concept-csr__block h3,
body.concept-page .concept-cta__lead {
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho,
    'Sawarabi Mincho', 'HG明朝E', 'ＭＳ Ｐ明朝', 'MS PMincho', serif;
  font-weight: normal;
}

/* ===== リップル ===== */
body.concept-page .concept-ripple {
  position: relative;
  overflow: hidden;
}
body.concept-page .concept-ripple__wave {
  position: absolute;
  border-radius: 50%;
  background: rgba(17, 187, 221, 0.35);
  transform: scale(0);
  animation: conceptRipple 0.6s ease-out;
  pointer-events: none;
  z-index: 0;
}
@keyframes conceptRipple {
  to { transform: scale(2.2); opacity: 0; }
}

/* ===== スクロール表示 =====
   .concept-reveal …… 既定（下から上にフェード）
   data-reveal="left|right|scale|fade" で方向を変更
   data-reveal-delay="1〜6" で 0.12s 単位の遅延を付与
   ============================================= */
body.concept-page .concept-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}
body.concept-page .concept-reveal[data-reveal="left"]  { transform: translateX(-56px); }
body.concept-page .concept-reveal[data-reveal="right"] { transform: translateX(56px); }
body.concept-page .concept-reveal[data-reveal="scale"] { transform: scale(0.9) rotate(-1.2deg); }
body.concept-page .concept-reveal[data-reveal="fade"]  { transform: none; }

body.concept-page .concept-reveal.is-in {
  opacity: 1;
  transform: translate(0, 0) scale(1);
}

body.concept-page .concept-reveal[data-reveal-delay="1"] { transition-delay: 0.12s; }
body.concept-page .concept-reveal[data-reveal-delay="2"] { transition-delay: 0.24s; }
body.concept-page .concept-reveal[data-reveal-delay="3"] { transition-delay: 0.36s; }
body.concept-page .concept-reveal[data-reveal-delay="4"] { transition-delay: 0.48s; }
body.concept-page .concept-reveal[data-reveal-delay="5"] { transition-delay: 0.60s; }
body.concept-page .concept-reveal[data-reveal-delay="6"] { transition-delay: 0.72s; }

/* ===== スクロール進行プログレスバー（ページ最上部）
   読み進み量がひと目で分かるよう、ヘッダーの上に細い線を表示する */
body.concept-page .concept-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: transparent;
  z-index: 250; /* ヘッダーより下にしてPCナビ操作を妨げない */
  pointer-events: none;
}
body.concept-page .concept-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--c-cyan-soft), var(--c-cyan));
  box-shadow: 0 0 8px rgba(17, 187, 221, 0.5);
  transition: width 0.1s linear;
}

/* ==========================================================
   1. ファーストビュー
   ========================================================== */
body.concept-page .concept-hero {
  position: relative;
  width: 100%;
  min-height: 100vh;       /* フルビューポート（alche風の没入感） */
  min-height: 100dvh;      /* モバイルツールバーを含めた実視認領域に対応 */
  padding: 200px 20px 140px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
  text-align: center;
  overflow: hidden;
  isolation: isolate;
  color: #fff;
  /* 深いネイビー → ブルーへの石材グラデ */
  background:
    radial-gradient(120% 80% at 30% 20%, rgba(45, 97, 124, 0.55) 0%, transparent 60%),
    radial-gradient(120% 80% at 80% 80%, rgba(17, 187, 221, 0.18) 0%, transparent 60%),
    linear-gradient(180deg, #082031 0%, #0f2c40 50%, #15394a 100%);
}

/* 石材の質感（細い斜め罫線） */
body.concept-page .concept-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      120deg,
      rgba(255, 255, 255, 0.025) 0,
      rgba(255, 255, 255, 0.025) 1px,
      transparent 1px,
      transparent 7px
    ),
    repeating-linear-gradient(
      30deg,
      rgba(17, 187, 221, 0.04) 0,
      rgba(17, 187, 221, 0.04) 1px,
      transparent 1px,
      transparent 11px
    );
  pointer-events: none;
  z-index: 0;
}
/* 上下フェード */
body.concept-page .concept-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 32, 49, 0.65) 0%, transparent 25%, transparent 75%, rgba(8, 32, 49, 0.85) 100%);
  pointer-events: none;
  z-index: 1;
}

body.concept-page .concept-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

/* ----- 空（薄い光のグラデーション層） ----- */
body.concept-page .concept-hero__sky {
  position: absolute;
  inset: -10% 0 0 0;
  background: radial-gradient(60% 50% at 50% 0%, rgba(113, 240, 189, 0.18), transparent 70%);
  z-index: 0;
}

/* ----- 光の差し込み ----- */
body.concept-page .concept-hero__beam {
  position: absolute;
  top: -10%;
  left: 30%;
  width: 28%;
  height: 130%;
  background: linear-gradient(180deg, transparent 0%, rgba(190, 230, 240, 0.35) 30%, rgba(113, 240, 189, 0.16) 60%, transparent 100%);
  transform: rotate(15deg) translateY(-100%);
  filter: blur(24px);
  z-index: 1;
  opacity: 0;
}
body.concept-loaded .concept-hero__beam {
  animation: conceptBeam 2.6s ease-out 0.4s forwards, conceptBeamDrift 14s ease-in-out 3s infinite alternate;
}
@keyframes conceptBeam {
  0% { opacity: 0; transform: rotate(15deg) translateY(-100%); }
  60% { opacity: 0.55; }
  100% { opacity: 0.45; transform: rotate(15deg) translateY(0); }
}
@keyframes conceptBeamDrift {
  0% { left: 28%; }
  100% { left: 36%; }
}

/* ----- デジタルグリッド ----- */
body.concept-page .concept-hero__grid {
  position: absolute;
  inset: 8% 6%;
  background-image:
    linear-gradient(rgba(113, 240, 189, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(113, 240, 189, 0.08) 1px, transparent 1px);
  background-size: 38px 38px;
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at center, #000 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 60% 50% at center, #000 30%, transparent 80%);
  z-index: 1;
  opacity: 0;
  transform: scale(1.04);
}
body.concept-loaded .concept-hero__grid {
  animation: conceptGridBoot 1.8s ease-out 0.4s forwards;
}
@keyframes conceptGridBoot {
  0% { opacity: 0; transform: scale(1.04); }
  16% { opacity: 0.85; }
  22% { opacity: 0.18; }
  34% { opacity: 0.9; }
  100% { opacity: 0.6; transform: scale(1); }
}

/* ----- 神殿の柱 ----- */
body.concept-page .concept-hero__pillar {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 22px;
  display: flex;
  flex-direction: column;
  z-index: 2;
}
body.concept-page .concept-hero__pillar--left { left: 7%; }
body.concept-page .concept-hero__pillar--right { right: 7%; }

body.concept-page .concept-hero__pillar-cap,
body.concept-page .concept-hero__pillar-base {
  flex: 0 0 auto;
  height: 14px;
  width: 36px;
  margin-left: -7px;
  background: linear-gradient(180deg, #b4c8d2 0%, #5d7d8b 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.45),
    inset 0 -1px 0 rgba(0, 0, 0, 0.25);
  opacity: 0.85;
  transform: scaleX(0);
  transform-origin: center;
}
body.concept-page .concept-hero__pillar-cap { margin-top: 70px; }
body.concept-page .concept-hero__pillar-base { margin-bottom: 70px; }

body.concept-page .concept-hero__pillar-shaft {
  flex: 1 1 auto;
  width: 100%;
  background:
    linear-gradient(90deg, rgba(180, 200, 210, 0) 0%, rgba(180, 200, 210, 0.5) 30%, rgba(180, 200, 210, 0.6) 50%, rgba(180, 200, 210, 0.5) 70%, rgba(180, 200, 210, 0) 100%),
    repeating-linear-gradient(90deg, rgba(180, 200, 210, 0.18) 0 1px, transparent 1px 5px);
  transform: scaleY(0);
  transform-origin: top;
  opacity: 0.6;
}
body.concept-loaded .concept-hero__pillar-shaft { animation: conceptPillarRise 1.4s ease-out 0.2s forwards; }
body.concept-loaded .concept-hero__pillar-cap,
body.concept-loaded .concept-hero__pillar-base { animation: conceptPillarCap 0.7s ease-out 1.5s forwards; }
@keyframes conceptPillarRise { to { transform: scaleY(1); } }
@keyframes conceptPillarCap { to { transform: scaleX(1); } }

/* ----- 星座線 × ITネットワーク（順次描画） ----- */
body.concept-page .concept-hero__network {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  color: #71f0bd;
}
body.concept-page .concept-hero__network-lines line {
  stroke: currentColor;
  stroke-width: 1;
  stroke-dasharray: 220;
  stroke-dashoffset: 220;
  opacity: 0.6;
  filter: drop-shadow(0 0 4px rgba(113, 240, 189, 0.4));
}
body.concept-loaded .concept-hero__network-lines line {
  animation: conceptLineDraw 1.1s ease-out forwards, conceptLineFlow 8s linear 4s infinite;
}
body.concept-loaded .concept-hero__network-lines line:nth-child(1) { animation-delay: 0.7s, 4s; }
body.concept-loaded .concept-hero__network-lines line:nth-child(2) { animation-delay: 0.85s, 4.4s; }
body.concept-loaded .concept-hero__network-lines line:nth-child(3) { animation-delay: 1s, 4.8s; }
body.concept-loaded .concept-hero__network-lines line:nth-child(4) { animation-delay: 1.15s, 5.2s; }
body.concept-loaded .concept-hero__network-lines line:nth-child(5) { animation-delay: 1.3s, 5.6s; }
body.concept-loaded .concept-hero__network-lines line:nth-child(6) { animation-delay: 1.45s, 6s; }
body.concept-loaded .concept-hero__network-lines line:nth-child(7) { animation-delay: 1.6s, 6.4s; }
body.concept-loaded .concept-hero__network-lines line:nth-child(8) { animation-delay: 1.75s, 6.8s; }
body.concept-loaded .concept-hero__network-lines line:nth-child(9) { animation-delay: 1.9s, 7.2s; }
@keyframes conceptLineDraw { to { stroke-dashoffset: 0; } }
@keyframes conceptLineFlow {
  0% { stroke-dasharray: 0 220; stroke-dashoffset: 0; }
  20% { stroke-dasharray: 30 190; }
  100% { stroke-dasharray: 30 190; stroke-dashoffset: -440; }
}

body.concept-page .concept-hero__network-dots circle {
  fill: #71f0bd;
  opacity: 0;
  transform: scale(0);
  transform-origin: center;
  transform-box: fill-box;
  filter: drop-shadow(0 0 6px rgba(113, 240, 189, 0.7));
}
body.concept-loaded .concept-hero__network-dots circle { animation: conceptDotPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }
body.concept-loaded .concept-hero__network-dots circle:nth-child(1) { animation-delay: 0.7s; }
body.concept-loaded .concept-hero__network-dots circle:nth-child(2) { animation-delay: 0.85s; fill: #11bbdd; }
body.concept-loaded .concept-hero__network-dots circle:nth-child(3) { animation-delay: 1s; }
body.concept-loaded .concept-hero__network-dots circle:nth-child(4) { animation-delay: 1.15s; fill: #11bbdd; }
body.concept-loaded .concept-hero__network-dots circle:nth-child(5) { animation-delay: 1.3s; }
body.concept-loaded .concept-hero__network-dots circle:nth-child(6) { animation-delay: 1.45s; fill: #11bbdd; }
body.concept-loaded .concept-hero__network-dots circle:nth-child(7) { animation-delay: 1.6s; }
body.concept-loaded .concept-hero__network-dots circle:nth-child(8) { animation-delay: 1.75s; }
@keyframes conceptDotPop {
  0% { opacity: 0; transform: scale(0); }
  60% { opacity: 1; transform: scale(1.7); }
  100% { opacity: 0.85; transform: scale(1); }
}

/* ----- 背景の石碑文字 ----- */
body.concept-page .concept-hero__greek {
  position: absolute;
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-weight: bold;
  user-select: none;
  letter-spacing: 0.04em;
  /* 刻印風（ネイビー基調） */
  color: rgba(180, 215, 230, 0.07);
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.06),
    0 -1px 0 rgba(0, 0, 0, 0.4);
  z-index: 1;
  opacity: 0;
  clip-path: inset(0 100% 0 0);
  transition: color 0.6s ease, text-shadow 0.6s ease;
}
body.concept-page .concept-hero__greek--main {
  font-size: clamp(80px, 18vw, 220px);
  top: 18%;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
}
body.concept-page .concept-hero__greek--sub {
  font-size: clamp(50px, 11vw, 140px);
  bottom: 12%;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  color: rgba(113, 240, 189, 0.06);
}
body.concept-loaded .concept-hero__greek--main { animation: conceptCarveIn 2.2s cubic-bezier(0.2, 0.8, 0.2, 1) 0.9s forwards; }
body.concept-loaded .concept-hero__greek--sub { animation: conceptCarveIn 2.2s cubic-bezier(0.2, 0.8, 0.2, 1) 1.4s forwards; }
@keyframes conceptCarveIn {
  0% { opacity: 0; clip-path: inset(0 100% 0 0); }
  100% { opacity: 1; clip-path: inset(0 0% 0 0); }
}
/* ホバー時に光が走る（PCのみ） */
@media (hover: hover) {
  body.concept-page .concept-hero__bg:hover .concept-hero__greek--main {
    color: rgba(113, 240, 189, 0.16);
    text-shadow:
      0 1px 0 rgba(255, 255, 255, 0.06),
      0 0 32px rgba(113, 240, 189, 0.35);
  }
  body.concept-page .concept-hero__bg:hover .concept-hero__greek--sub {
    color: rgba(17, 187, 221, 0.14);
    text-shadow:
      0 1px 0 rgba(255, 255, 255, 0.04),
      0 0 26px rgba(17, 187, 221, 0.3);
  }
}

/* ----- ヒーロー本文 ----- */
body.concept-page .concept-hero__inner {
  position: relative;
  z-index: 3;
  max-width: 880px;
  margin: 0 auto;
}

body.concept-page .concept-hero__en {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 13px;
  letter-spacing: 0.55em;
  color: #71f0bd;
  margin-bottom: 30px;
  text-transform: uppercase;
  font-weight: bold;
  opacity: 0;
}
body.concept-page .concept-hero__en-line {
  display: inline-block;
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, transparent, #71f0bd, transparent);
}
body.concept-loaded .concept-hero__en { animation: conceptFadeUp 0.9s ease-out 0.6s forwards; }

body.concept-page .concept-hero__title {
  font-size: clamp(22px, 4.5vw, 42px);
  letter-spacing: 0.18em;
  line-height: 1.7;
  margin: 0 0 30px;
  color: #fff;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
  opacity: 0;
}
body.concept-loaded .concept-hero__title { animation: conceptFadeUp 1s ease-out 0.85s forwards; }

body.concept-page .concept-hero__copy {
  font-size: clamp(20px, 3.2vw, 30px);
  letter-spacing: 0.15em;
  line-height: 1.9;
  margin: 0 0 22px;
  color: #fff;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
  opacity: 0;
}
body.concept-loaded .concept-hero__copy { animation: conceptFadeUp 1s ease-out 1.15s forwards; }

body.concept-page .concept-hero__lead {
  font-size: clamp(13px, 1.2vw, 15px);
  letter-spacing: 0.12em;
  line-height: 2;
  margin: 0;
  color: rgba(220, 235, 244, 0.9);
  opacity: 0;
}
body.concept-loaded .concept-hero__lead { animation: conceptFadeUp 1s ease-out 1.4s forwards; }

@keyframes conceptFadeUp { to { opacity: 1; transform: translateY(0); } }
@keyframes conceptBrandShine {
  0%, 100% { background-position: 100% 50%; }
  50% { background-position: 0% 50%; }
}

/* ----- スクロール誘導 -----
   水平中央寄せに transform を使うと、conceptFadeUp が transform を
   上書きして中心からズレる。inset-inline: 0; margin: 0 auto に切り替え、
   transform は出現アニメ／hover／active の演出だけに使う。 */

/* ----- ヒーロー下端の発光ライン ----- */
body.concept-page .concept-hero__seam {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, #71f0bd 30%, #11bbdd 50%, #71f0bd 70%, transparent);
  z-index: 4;
  box-shadow: 0 0 12px rgba(113, 240, 189, 0.5);
  opacity: 0;
}
body.concept-loaded .concept-hero__seam {
  animation: conceptSeamGrow 1.4s cubic-bezier(0.2, 0.8, 0.2, 1) 1.9s forwards,
             conceptSeamPulse 4s ease-in-out 3.4s infinite;
}
@keyframes conceptSeamGrow {
  0% { width: 0; opacity: 0; }
  60% { opacity: 1; }
  100% { width: 280px; opacity: 1; }
}
@keyframes conceptSeamPulse {
  0%, 100% { box-shadow: 0 0 8px rgba(113, 240, 189, 0.3); }
  50% { box-shadow: 0 0 22px rgba(113, 240, 189, 0.7); }
}

@media screen and (max-width: 960px) {
  body.concept-page .concept-hero { min-height: 540px; padding: 160px 18px 110px; }
  body.concept-page .concept-hero__pillar { width: 16px; }
  body.concept-page .concept-hero__pillar--left { left: 4%; }
  body.concept-page .concept-hero__pillar--right { right: 4%; }
}
@media screen and (max-width: 640px) {
  body.concept-page .concept-hero { min-height: 460px; padding: 140px 16px 90px; }
  body.concept-page .concept-hero__title { letter-spacing: 0.06em; }
  body.concept-page .concept-hero__copy { letter-spacing: 0.08em; }
  body.concept-page .concept-hero__en { font-size: 11px; letter-spacing: 0.4em; margin-bottom: 22px; }
  body.concept-page .concept-hero__en-line { width: 16px; }
  body.concept-page .concept-hero__pillar { width: 10px; }
  body.concept-page .concept-hero__pillar-cap,
  body.concept-page .concept-hero__pillar-base { width: 22px; margin-left: -6px; }
  body.concept-page .concept-br-sp { display: none; }
}

/* ==========================================================
   3. ページ内ナビゲーション — 章立てインデックス（v8 派手版）
   ========================================================== */
body.concept-page .concept-local-nav {
  position: relative;
  background: linear-gradient(180deg, var(--c-bg-soft) 0%, #ffffff 60%, var(--c-bg-soft) 100%);
  padding: 80px 20px 90px;
  margin: 0;
  overflow: hidden;
  isolation: isolate;
}

/* 背景の装飾レイヤー（IT風の薄い発光ライン＋グリッド） */
body.concept-page .concept-local-nav__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
body.concept-page .concept-local-nav__bg-line {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-cyan-soft) 30%, var(--c-cyan) 50%, var(--c-cyan-soft) 70%, transparent);
  box-shadow: 0 0 10px rgba(113, 240, 189, 0.4);
  transition: width 1.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
body.concept-page .concept-local-nav__bg-line--top    { top: 28px; }
body.concept-page .concept-local-nav__bg-line--bottom { bottom: 28px; transition-delay: 0.2s; }
body.concept-page .concept-local-nav.is-in .concept-local-nav__bg-line--top,
body.concept-page .concept-local-nav.is-in .concept-local-nav__bg-line--bottom {
  width: min(640px, 80%);
}
body.concept-page .concept-local-nav__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(17, 187, 221, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 187, 221, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: radial-gradient(ellipse 60% 50% at center, #000 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 60% 50% at center, #000 30%, transparent 80%);
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 1s ease 0.4s, transform 1.2s ease 0.4s;
}
body.concept-page .concept-local-nav.is-in .concept-local-nav__bg-grid {
  opacity: 0.5;
  transform: scale(1);
}

/* インナー */
body.concept-page .concept-local-nav__inner {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 12px;
}

/* ヘッダー（Index / Chapters / 章立て） */
body.concept-page .concept-local-nav__head {
  text-align: center;
  margin: 0 0 38px;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.8s ease 0.1s, transform 0.8s ease 0.1s;
}
body.concept-page .concept-local-nav.is-in .concept-local-nav__head {
  opacity: 1;
  transform: translateY(0);
}
body.concept-page .concept-local-nav__eyebrow {
  display: inline-block;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11px;
  letter-spacing: 0.6em;
  color: var(--c-cyan);
  font-weight: bold;
  margin-bottom: 12px;
  text-transform: uppercase;
}
body.concept-page .concept-local-nav__title {
  display: inline-flex;
  align-items: baseline;
  gap: 18px;
  margin: 0;
  padding: 0;
  border: none;
}
body.concept-page .concept-local-nav__title-en {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: 0.2em;
  color: var(--c-navy);
  font-weight: bold;
  background: linear-gradient(90deg, var(--c-navy) 0%, var(--c-navy) 40%, var(--c-cyan) 50%, var(--c-navy) 60%, var(--c-navy) 100%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-position: 100% 50%;
  animation: conceptIndexShine 6s ease-in-out 1.2s infinite;
}
@keyframes conceptIndexShine {
  0%, 100% { background-position: 100% 50%; }
  50% { background-position: 0% 50%; }
}
body.concept-page .concept-local-nav__title-jp {
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(13px, 1.3vw, 16px);
  letter-spacing: 0.4em;
  color: var(--c-text-mid);
  font-weight: normal;
}

/* リスト（PCは2列、SPは1列） */
body.concept-page .concept-local-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (min-width: 1100px) {
  body.concept-page .concept-local-nav__list {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 各章カード */
body.concept-page .concept-local-nav__item {
  position: relative;
  opacity: 0;
  transform: translateY(28px) scale(0.97);
  transition:
    opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}
body.concept-page .concept-local-nav.is-in .concept-local-nav__item {
  opacity: 1;
  transform: translateY(0) scale(1);
}
body.concept-page .concept-local-nav.is-in .concept-local-nav__item[data-index="1"] { transition-delay: 0.20s; }
body.concept-page .concept-local-nav.is-in .concept-local-nav__item[data-index="2"] { transition-delay: 0.32s; }
body.concept-page .concept-local-nav.is-in .concept-local-nav__item[data-index="3"] { transition-delay: 0.44s; }
body.concept-page .concept-local-nav.is-in .concept-local-nav__item[data-index="4"] { transition-delay: 0.56s; }

/* リンク本体（石碑風カード） */
body.concept-page .concept-local-nav__link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  text-decoration: none;
  color: var(--c-navy);
  background: linear-gradient(180deg, #ffffff 0%, var(--c-bg-soft) 100%);
  border: 1px solid var(--c-line);
  padding: 26px 28px 26px;
  min-height: 152px;
  overflow: hidden;
  isolation: isolate;
  transition:
    transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1),
    border-color 0.4s ease,
    background 0.5s ease,
    box-shadow 0.4s ease,
    color 0.4s ease;
}

/* 上端のグラデバー（hoverで描画） */
body.concept-page .concept-local-nav__link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-cyan-soft), var(--c-cyan), var(--c-cyan-soft));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.55s cubic-bezier(0.65, 0, 0.35, 1);
}

/* 光のスイープ（hover時） */
body.concept-page .concept-local-nav__link::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(113, 240, 189, 0.22) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.8s ease;
  pointer-events: none;
  z-index: 0;
}
body.concept-page .concept-local-nav__link:hover::after,
body.concept-page .concept-local-nav__link:focus-visible::after {
  transform: translateX(100%);
}

body.concept-page .concept-local-nav__link:hover,
body.concept-page .concept-local-nav__link:focus-visible {
  transform: translateY(-5px);
  border-color: transparent;
  box-shadow: 0 18px 36px rgba(21, 57, 74, 0.12);
  outline: none;
}
body.concept-page .concept-local-nav__link:hover::before,
body.concept-page .concept-local-nav__link:focus-visible::before { transform: scaleX(1); }
body.concept-page .concept-local-nav__link:active { transform: translateY(0); }

body.concept-page .concept-local-nav__link > * { position: relative; z-index: 1; }

/* 4隅装飾 */
body.concept-page .concept-local-nav__corner {
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1px solid var(--c-cyan);
  z-index: 2;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
}
body.concept-page .concept-local-nav__corner--tl { top: 8px; left: 8px;  border-right: none; border-bottom: none; transform: translate(-3px, -3px); }
body.concept-page .concept-local-nav__corner--tr { top: 8px; right: 8px; border-left: none;  border-bottom: none; transform: translate(3px, -3px); }
body.concept-page .concept-local-nav__corner--bl { bottom: 8px; left: 8px;  border-right: none; border-top: none; transform: translate(-3px, 3px); }
body.concept-page .concept-local-nav__corner--br { bottom: 8px; right: 8px; border-left: none;  border-top: none; transform: translate(3px, 3px); }
body.concept-page .concept-local-nav__link:hover .concept-local-nav__corner,
body.concept-page .concept-local-nav__link:focus-visible .concept-local-nav__corner,
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__corner {
  opacity: 1;
  transform: translate(0, 0);
}

/* ローマ数字（巨大表示） */
body.concept-page .concept-local-nav__num {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: clamp(38px, 4.4vw, 56px);
  letter-spacing: 0.04em;
  color: rgba(10, 79, 151, 0.22);
  font-weight: bold;
  line-height: 1;
  margin-bottom: 6px;
  user-select: none;
  transition: color 0.5s ease, transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), letter-spacing 0.5s ease;
}
body.concept-page .concept-local-nav__link:hover .concept-local-nav__num,
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__num {
  color: var(--c-brand-logo);
  transform: translateX(2px);
  letter-spacing: 0.08em;
}

/* 英字 */
body.concept-page .concept-local-nav__en {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--c-brand-contact);
  font-weight: bold;
  text-transform: uppercase;
  margin-bottom: 4px;
}

/* メインタイトル */
body.concept-page .concept-local-nav__label {
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(15px, 1.5vw, 18px);
  letter-spacing: 0.1em;
  color: var(--c-brand-logo);
  font-weight: 600;
  line-height: 1.4;
}

/* 補足（章のサブタイトル） */
body.concept-page .concept-local-nav__sub {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: #2f4e71;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dotted var(--c-line);
  width: 100%;
  transition: color 0.4s ease, border-top-color 0.4s ease;
}
body.concept-page .concept-local-nav__link:hover .concept-local-nav__sub,
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__sub {
  color: var(--c-brand-logo);
  border-top-color: var(--c-brand-contact);
}

/* 矢印アイコン */
body.concept-page .concept-local-nav__arrow {
  position: absolute;
  top: 26px;
  right: 28px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.4s ease, border-color 0.4s ease, transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
body.concept-page .concept-local-nav__arrow::before {
  content: '';
  width: 8px;
  height: 8px;
  border-top: 1px solid var(--c-navy);
  border-right: 1px solid var(--c-navy);
  transform: rotate(45deg) translate(-1px, 1px);
  transition: border-color 0.4s ease;
}
body.concept-page .concept-local-nav__link:hover .concept-local-nav__arrow,
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__arrow {
  background: var(--c-navy);
  border-color: var(--c-navy);
  transform: translateX(4px) rotate(360deg);
}
body.concept-page .concept-local-nav__link:hover .concept-local-nav__arrow::before,
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__arrow::before {
  border-top-color: var(--c-cyan-soft);
  border-right-color: var(--c-cyan-soft);
}

/* アクティブ時に走るビーム */
body.concept-page .concept-local-nav__beam {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-cyan-soft), var(--c-cyan));
  box-shadow: 0 0 8px rgba(17, 187, 221, 0.55);
  transition: width 0.6s cubic-bezier(0.65, 0, 0.35, 1);
  z-index: 2;
}
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__beam {
  width: 100%;
  animation: conceptIndexBeamPulse 2.4s ease-in-out infinite;
}
@keyframes conceptIndexBeamPulse {
  0%, 100% { box-shadow: 0 0 6px rgba(17, 187, 221, 0.4); }
  50%      { box-shadow: 0 0 14px rgba(17, 187, 221, 0.85); }
}

/* アクティブ章のカード本体強調 */
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__link {
  background: linear-gradient(180deg, var(--c-navy) 0%, var(--c-navy-deep) 100%);
  color: #fff;
  border-color: var(--c-navy);
  box-shadow:
    0 18px 36px rgba(21, 57, 74, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__link::before {
  transform: scaleX(1);
}
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__num {
  color: var(--c-cyan-soft);
  text-shadow: 0 0 14px rgba(113, 240, 189, 0.4);
}
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__en {
  color: var(--c-cyan-soft);
}
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__label {
  color: #fff;
  text-shadow: 0 0 16px rgba(113, 240, 189, 0.3);
}
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__sub {
  color: rgba(220, 235, 244, 0.85);
  border-top-color: var(--c-cyan-soft);
}
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__corner {
  border-color: var(--c-cyan-soft);
}
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__arrow {
  background: var(--c-cyan-soft);
  border-color: var(--c-cyan-soft);
}
body.concept-page .concept-local-nav__item.is-active .concept-local-nav__arrow::before {
  border-top-color: var(--c-navy);
  border-right-color: var(--c-navy);
}

@media screen and (max-width: 640px) {
  body.concept-page .concept-local-nav { padding: 60px 16px 70px; }
  body.concept-page .concept-local-nav__head { margin-bottom: 28px; }
  body.concept-page .concept-local-nav__title { gap: 12px; flex-direction: column; align-items: center; }
  body.concept-page .concept-local-nav__list { grid-template-columns: 1fr; gap: 12px; }
  body.concept-page .concept-local-nav__link { padding: 22px 22px; min-height: 0; }
  body.concept-page .concept-local-nav__num { font-size: 36px; }
  body.concept-page .concept-local-nav__arrow { top: 22px; right: 22px; width: 24px; height: 24px; }
  body.concept-page .concept-local-nav__sub { padding-top: 12px; }
}

/* ==========================================================
   セクション共通
   ========================================================== */
body.concept-page .content { padding-top: 0; }
body.concept-page .concept-section {
  scroll-margin-top: 110px; /* 固定ヘッダー(90px) + 余白 で埋もれ防止 */
  margin: 90px auto;
  padding: 0 20px;
  max-width: 1100px;
  position: relative;
}
body.concept-page .concept-section__title {
  position: relative;
  text-align: center;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: 0.18em;
  color: var(--c-navy);
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, 'Sawarabi Mincho', serif;
  font-weight: normal;
  border: none;
  padding: 0 0 24px;
  margin: 0 0 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
body.concept-page .concept-section__title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-cyan-soft) 30%, var(--c-cyan) 50%, var(--c-cyan-soft) 70%, transparent);
  transition: width 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}
body.concept-page .concept-section.is-in .concept-section__title::after {
  width: 90px;
}
body.concept-page .concept-section.concept-reveal:not(.is-in) .concept-section__title::after { width: 0; }

body.concept-page .concept-section__num {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 12px;
  letter-spacing: 0.4em;
  color: var(--c-cyan);
  font-weight: bold;
  border: 1px solid var(--c-line);
  padding: 3px 14px;
  border-radius: 1px;
}
body.concept-page .concept-section__en {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11px;
  letter-spacing: 0.45em;
  color: var(--c-cyan);
  font-weight: bold;
  text-transform: uppercase;
  margin-top: 8px;
}
body.concept-page .concept-section__lead {
  text-align: center;
  font-size: clamp(14px, 1.2vw, 16px);
  line-height: 2.05;
  color: var(--c-text-soft);
  letter-spacing: 0.06em;
  margin: 0 auto 50px;
  max-width: 800px;
}

@media screen and (max-width: 640px) {
  body.concept-page .concept-section { margin: 60px auto; padding: 0 16px; }
  body.concept-page .concept-section__title { letter-spacing: 0.12em; }
  body.concept-page .concept-section__lead { margin-bottom: 36px; }
}

/* ==========================================================
   4. 社名の由来 — 記事型読み物（旧 origin glossary パネルは廃止）
   ========================================================== */
body.concept-page .concept-origin__article {
  max-width: 880px;
  margin: 50px auto 0;
}

/* 見出しヘッダー */
body.concept-page .concept-origin__article-head {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 24px;
}
body.concept-page .concept-origin__article-eyebrow {
  display: inline-block;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11px;
  letter-spacing: 0.45em;
  color: var(--c-cyan);
  font-weight: bold;
  margin-bottom: 16px;
  text-transform: uppercase;
}
body.concept-page .concept-origin__article-headline {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin: 0;
  font-weight: 600;
}
body.concept-page .concept-origin__article-en {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: 0.18em;
  color: var(--c-navy);
  background: linear-gradient(90deg, var(--c-navy) 0%, var(--c-navy) 40%, var(--c-cyan) 50%, var(--c-navy) 60%, var(--c-navy) 100%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-position: 100% 50%;
  animation: conceptOriginShine 6s ease-in-out 1s infinite;
}
@keyframes conceptOriginShine {
  0%, 100% { background-position: 100% 50%; }
  50% { background-position: 0% 50%; }
}
body.concept-page .concept-origin__article-grc {
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}
body.concept-page .concept-origin__article-jp {
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(16px, 1.5vw, 19px);
  letter-spacing: 0.18em;
  color: var(--c-text-soft);
  margin-top: 8px;
}
body.concept-page .concept-origin__article-rule {
  display: block;
  width: 56px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-cyan), transparent);
  margin: 24px auto 0;
}

/* 4つの要点 */
body.concept-page .concept-origin__points {
  list-style: none;
  margin: 0 0 50px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
body.concept-page .concept-origin__point {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  background: linear-gradient(180deg, var(--c-bg-soft) 0%, #ffffff 100%);
  border: 1px solid var(--c-line-soft);
  border-left: 3px solid var(--c-cyan-soft);
  padding: 18px 22px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
body.concept-page .concept-origin__point:hover {
  border-left-color: var(--c-cyan);
  box-shadow: 0 6px 18px rgba(21, 57, 74, 0.07);
  transform: translateY(-2px);
}
body.concept-page .concept-origin__point-num {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
  font-weight: bold;
  padding-top: 2px;
  flex-shrink: 0;
}
body.concept-page .concept-origin__point p {
  font-size: clamp(13.5px, 1.1vw, 14.5px);
  line-height: 1.95;
  color: var(--c-text-soft);
  letter-spacing: 0.04em;
  margin: 0;
}

/* 章（古典ギリシャ語の文献の用法 / 70人訳本の用法） */
body.concept-page .concept-origin__chapter {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-line-soft);
  padding: 32px 36px 30px;
  margin-bottom: 22px;
  overflow: hidden;
}
body.concept-page .concept-origin__chapter:last-child {
  margin-bottom: 0;
}
body.concept-page .concept-origin__chapter::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-cyan), transparent);
}
body.concept-page .concept-origin__chapter-title {
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(17px, 1.7vw, 21px);
  letter-spacing: 0.1em;
  color: var(--c-navy);
  font-weight: 600;
  margin: 0 0 22px;
  padding-bottom: 16px;
  border-bottom: 1px dotted var(--c-line);
  text-align: left;
}
body.concept-page .concept-origin__chapter-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--c-cyan);
  font-weight: bold;
  border: 1px solid var(--c-line);
  flex-shrink: 0;
}
body.concept-page .concept-origin__chapter-label {
  flex: 1;
}
body.concept-page .concept-origin__chapter-body p {
  font-size: clamp(14px, 1.15vw, 15px);
  line-height: 2.1;
  color: var(--c-text-soft);
  letter-spacing: 0.04em;
  margin: 0 0 1.2em;
}
body.concept-page .concept-origin__chapter-body p:last-child {
  margin-bottom: 0;
}
body.concept-page .concept-origin__chapter-body strong {
  color: var(--c-navy);
  font-weight: 600;
  border-bottom: 1px dotted var(--c-cyan);
  padding-bottom: 1px;
}
body.concept-page .concept-origin__chapter-body em {
  font-style: normal;
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  color: var(--c-cyan);
  font-weight: bold;
}

@media screen and (max-width: 768px) {
  body.concept-page .concept-origin__article { margin-top: 40px; }
  body.concept-page .concept-origin__points { grid-template-columns: 1fr; }
  body.concept-page .concept-origin__chapter { padding: 26px 22px; }
  body.concept-page .concept-origin__chapter-title {
    flex-wrap: wrap;
    font-size: 16px;
  }
  body.concept-page .concept-origin__chapter-num { width: 32px; height: 32px; font-size: 16px; }
}
@media screen and (max-width: 640px) {
  body.concept-page .concept-origin__article-headline { gap: 4px; }
  body.concept-page .concept-origin__article-jp { font-size: 14px; letter-spacing: 0.12em; }
  body.concept-page .concept-origin__point { padding: 16px 18px; }
}

/* ==========================================================
   5. 企業理念 — 中央メッセージ + 3ビジョンカード（三角配置）
   ========================================================== */
body.concept-page .concept-philosophy__layout {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-areas:
    ".    top    ."
    "left center right";
  gap: 22px;
  max-width: 1080px;
  margin: 0 auto;
  position: relative;
}
body.concept-page .concept-philosophy__card--top    { grid-area: top; }
body.concept-page .concept-philosophy__center        { grid-area: center; }
body.concept-page .concept-philosophy__card--left   { grid-area: left; }
body.concept-page .concept-philosophy__card--right  { grid-area: right; }

/* ----- 3つの理念カード ----- */
body.concept-page .concept-philosophy__card {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-line-soft);
  border-top: 2px solid var(--c-accent-soft);
  padding: 28px 26px 30px;
  text-align: left;
  overflow: hidden;
  transition:
    transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}
/* 上端のグラデバー（hoverで描画） */
body.concept-page .concept-philosophy__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent-soft), var(--c-accent), var(--c-accent-soft));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.55s cubic-bezier(0.65, 0, 0.35, 1);
}
body.concept-page .concept-philosophy__card:hover {
  transform: translateY(-4px);
  border-top-color: transparent;
  box-shadow: 0 14px 30px rgba(21, 57, 74, 0.1);
}
body.concept-page .concept-philosophy__card:hover::before { transform: scaleX(1); }

/* カード内見出し・本文 */
body.concept-page .concept-philosophy__card-num {
  display: inline-block;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--c-accent);
  font-weight: bold;
  border: 1px solid rgba(10, 79, 151, 0.25);
  padding: 2px 10px;
  margin-bottom: 12px;
  text-transform: uppercase;
}
body.concept-page .concept-philosophy__card-en {
  display: block;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 10px;
  letter-spacing: 0.35em;
  color: var(--c-accent);
  font-weight: bold;
  text-transform: uppercase;
  margin-bottom: 8px;
}
body.concept-page .concept-philosophy__card-title {
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(18px, 1.6vw, 21px);
  color: var(--c-navy);
  letter-spacing: 0.1em;
  margin: 0 0 12px;
  font-weight: 600;
  text-align: left;
}
body.concept-page .concept-philosophy__card-title::after {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: var(--c-accent);
  margin-top: 10px;
  transition: width 0.5s ease;
}
body.concept-page .concept-philosophy__card:hover .concept-philosophy__card-title::after {
  width: 56px;
}
body.concept-page .concept-philosophy__card-desc {
  font-size: clamp(13px, 1.1vw, 14px);
  line-height: 1.95;
  color: var(--c-text-soft);
  letter-spacing: 0.04em;
  margin: 0;
}

/* ビジョンに向かう細い接続ライン（カード→中央） */
body.concept-page .concept-philosophy__card-link {
  position: absolute;
  pointer-events: none;
  background: linear-gradient(180deg, var(--c-accent-soft), transparent);
  opacity: 0.5;
  transition: opacity 0.4s ease, height 0.5s ease;
}
body.concept-page .concept-philosophy__card--top .concept-philosophy__card-link {
  bottom: -22px;
  left: 50%;
  width: 1px;
  height: 22px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, var(--c-accent), transparent);
}
body.concept-page .concept-philosophy__card--left .concept-philosophy__card-link,
body.concept-page .concept-philosophy__card--right .concept-philosophy__card-link {
  display: none; /* 下段は中央メッセージと水平に並ぶので接続線は不要 */
}

/* ----- 中央メッセージ（神殿の石板風ネイビー） ----- */
body.concept-page .concept-philosophy__center {
  position: relative;
  background: linear-gradient(180deg, var(--c-navy) 0%, var(--c-navy-deep) 100%);
  color: #fff;
  border: 1px solid var(--c-navy);
  padding: 36px 28px;
  text-align: center;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 12px 30px rgba(8, 32, 49, 0.18);
  isolation: isolate;
  overflow: hidden;
}
/* 中央の薄い光（循環の暗示） */
body.concept-page .concept-philosophy__center::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 60% at 50% 0%, rgba(113, 240, 189, 0.18), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
body.concept-page .concept-philosophy__center > * { position: relative; z-index: 1; }

body.concept-page .concept-philosophy__center-corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--c-cyan-soft);
  z-index: 2;
}
body.concept-page .concept-philosophy__center-corner--tl { top: 8px; left: 8px; border-right: none; border-bottom: none; }
body.concept-page .concept-philosophy__center-corner--tr { top: 8px; right: 8px; border-left: none; border-bottom: none; }
body.concept-page .concept-philosophy__center-corner--bl { bottom: 8px; left: 8px; border-right: none; border-top: none; }
body.concept-page .concept-philosophy__center-corner--br { bottom: 8px; right: 8px; border-left: none; border-top: none; }

body.concept-page .concept-philosophy__center-eyebrow {
  display: block;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11px;
  letter-spacing: 0.5em;
  color: var(--c-cyan-soft);
  margin-bottom: 16px;
  text-transform: uppercase;
  font-weight: bold;
}
body.concept-page .concept-philosophy__center-message {
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(15px, 1.5vw, 19px);
  line-height: 1.95;
  letter-spacing: 0.08em;
  color: #fff;
  margin: 0;
  text-shadow: 0 0 16px rgba(113, 240, 189, 0.18);
}
body.concept-page .concept-philosophy__center-rule {
  display: block;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-cyan-soft), transparent);
  margin: 18px auto 0;
}

/* タブレット：上に中央 + 下に3カード */
@media screen and (max-width: 960px) {
  body.concept-page .concept-philosophy__layout {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "center center"
      "top    top"
      "left   right";
    gap: 16px;
  }
  body.concept-page .concept-philosophy__card--top .concept-philosophy__card-link { display: none; }
}

/* スマホ：縦積み */
@media screen and (max-width: 640px) {
  body.concept-page .concept-philosophy__layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "center"
      "top"
      "left"
      "right";
    gap: 14px;
  }
  body.concept-page .concept-philosophy__center { padding: 28px 22px; }
  body.concept-page .concept-philosophy__card { padding: 22px 20px 24px; }
}

/* ==========================================================
   6. What's TECHTONE? カード
   ========================================================== */
body.concept-page .concept-what__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
body.concept-page .concept-what__card {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-line-soft);
  padding: 50px 28px 30px;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.3s ease,
              border-color 0.3s ease;
  isolation: isolate;
}
body.concept-page .concept-what__card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent-soft), var(--c-accent), var(--c-accent-soft));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.65, 0, 0.35, 1);
}
body.concept-page .concept-what__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(21, 57, 74, 0.1);
  border-color: transparent;
}
body.concept-page .concept-what__card:hover::before { transform: scaleX(1); }

body.concept-page .concept-what__num {
  position: absolute;
  top: 18px;
  right: 22px;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 32px;
  font-weight: bold;
  letter-spacing: 0.04em;
  color: rgba(21, 57, 74, 0.18);
  line-height: 1;
  user-select: none;
  transition: color 0.4s ease, transform 0.5s ease;
}
body.concept-page .concept-what__card:hover .concept-what__num {
  color: var(--c-accent);
  transform: translateY(-2px);
}

body.concept-page .concept-what__label {
  position: absolute;
  top: 28px;
  left: 28px;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--c-accent);
  font-weight: bold;
  text-transform: uppercase;
}

body.concept-page .concept-what__card h3 {
  position: relative;
  z-index: 1;
  font-size: clamp(16px, 1.4vw, 18px);
  color: var(--c-navy);
  letter-spacing: 0.06em;
  line-height: 1.7;
  margin: 14px 0 14px;
  font-weight: 600;
  text-align: left;
}
body.concept-page .concept-what__card h3::after {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: var(--c-accent-soft);
  margin-top: 14px;
  transition: width 0.5s ease, background 0.4s ease;
}
body.concept-page .concept-what__card:hover h3::after {
  width: 56px;
  background: linear-gradient(90deg, var(--c-accent-soft), var(--c-accent));
}

body.concept-page .concept-what__card p {
  position: relative;
  z-index: 1;
  font-size: 13.5px;
  line-height: 2;
  color: var(--c-text-mid);
  margin: 0;
  letter-spacing: 0.04em;
}

/* details */
body.concept-page .concept-what__details {
  margin-top: 18px;
  border-top: 1px dotted var(--c-line);
  padding-top: 14px;
  position: relative;
  z-index: 1;
}
body.concept-page .concept-what__details summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  margin: -6px -10px;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--c-navy);
  text-transform: uppercase;
  font-weight: bold;
  transition: color 0.3s ease, gap 0.3s ease;
  outline: none;
}
body.concept-page .concept-what__details summary::-webkit-details-marker { display: none; }
body.concept-page .concept-what__details summary:hover { color: var(--c-cyan); gap: 14px; }
body.concept-page .concept-what__details summary:focus-visible { outline: 1px solid var(--c-cyan); outline-offset: 2px; }
body.concept-page .concept-what__details-icon {
  width: 12px;
  height: 12px;
  position: relative;
}
body.concept-page .concept-what__details-icon::before,
body.concept-page .concept-what__details-icon::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  background: currentColor;
  transition: transform 0.3s ease;
}
body.concept-page .concept-what__details-icon::before { width: 10px; height: 1px; transform: translate(-50%, -50%); }
body.concept-page .concept-what__details-icon::after { width: 1px; height: 10px; transform: translate(-50%, -50%); }
body.concept-page .concept-what__details[open] .concept-what__details-icon::after { transform: translate(-50%, -50%) scaleY(0); }
body.concept-page .concept-what__details > p {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.95;
  color: var(--c-text-mid);
  border-left: 2px solid var(--c-cyan-soft);
  padding-left: 12px;
  animation: conceptDetailsOpen 0.4s ease-out;
}
body.concept-page .concept-what__details[open]::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-cyan), transparent);
  animation: conceptDetailsLine 0.6s ease-out;
}
@keyframes conceptDetailsOpen {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes conceptDetailsLine {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

/* 個別装飾 */
body.concept-page .concept-what__deco {
  position: absolute;
  pointer-events: none;
  color: var(--c-cyan);
  opacity: 0;
  transition: opacity 0.5s ease, transform 0.5s ease;
}
/* What's TECHTONE?: hover時の装飾図形を非表示 */
body.concept-page .concept-what__deco {
  display: none;
}
body.concept-page .concept-what__card:hover .concept-what__deco { opacity: 0.85; }

/* 1) 成長：右肩上がりライン＋データグリッド */
body.concept-page .concept-what__card--grow::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(17, 187, 221, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 187, 221, 0.06) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 100%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 100%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
  z-index: 0;
}
body.concept-page .concept-what__card--grow:hover::after { opacity: 0.7; }
body.concept-page .concept-what__deco--rise {
  bottom: 22px;
  right: 22px;
  width: 80px;
  height: 40px;
  transform: translateX(8px);
}
body.concept-page .concept-what__deco--rise svg {
  width: 100%;
  height: 100%;
  stroke-dasharray: 120;
  stroke-dashoffset: 120;
  filter: drop-shadow(0 0 4px rgba(17, 187, 221, 0.5));
  transition: stroke-dashoffset 0.9s ease 0.05s;
}
body.concept-page .concept-what__card--grow:hover .concept-what__deco--rise svg { stroke-dashoffset: 0; }
body.concept-page .concept-what__card--grow:hover .concept-what__deco--rise { transform: translateX(0); }
/* グリッチ */
body.concept-page .concept-what__card--grow:hover .concept-what__num {
  animation: conceptNumGlitch 0.6s steps(2) 1;
}
@keyframes conceptNumGlitch {
  0%, 100% { transform: translate(0, 0); }
  20% { transform: translate(-1px, 1px); }
  40% { transform: translate(1px, -1px); }
  60% { transform: translate(-1px, 0); }
  80% { transform: translate(1px, 1px); }
}

/* 2) 遊び：月桂樹がそっと揺れる＋柔らかい光 */
body.concept-page .concept-what__deco--laurel {
  bottom: 20px;
  right: 20px;
  width: 90px;
  height: 30px;
  color: var(--c-cyan-soft);
}
body.concept-page .concept-what__deco--laurel svg { width: 100%; height: 100%; }
body.concept-page .concept-what__card--play:hover .concept-what__deco--laurel { transform: translateY(-1px); }
/* 開いたときの青い光 */
body.concept-page .concept-what__card--play .concept-what__details[open] {
  animation: conceptPlayGlow 1.4s ease-out;
}
@keyframes conceptPlayGlow {
  0% { background: rgba(113, 240, 189, 0); }
  30% { background: rgba(113, 240, 189, 0.18); }
  100% { background: rgba(113, 240, 189, 0); }
}

/* 3) 提案：放射＋番号リング */
body.concept-page .concept-what__deco--rays {
  bottom: 18px;
  right: 22px;
  width: 80px;
  height: 40px;
}
body.concept-page .concept-what__deco--rays svg {
  width: 100%;
  height: 100%;
  transform: scale(0.6);
  transform-origin: center;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
body.concept-page .concept-what__card--propose:hover .concept-what__deco--rays svg { transform: scale(1); }
body.concept-page .concept-what__card--propose .concept-what__num::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 50px;
  height: 50px;
  border: 1px solid var(--c-cyan);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0.6);
  opacity: 0;
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s ease;
}
body.concept-page .concept-what__card--propose:hover .concept-what__num::after {
  transform: translate(-50%, -50%) scale(1);
  opacity: 0.5;
}
/* 03の番号表示を01・02と同じ丸なし表示に揃える */
body.concept-page .concept-what__card--propose .concept-what__num::after,
body.concept-page .concept-what__card--propose:hover .concept-what__num::after,
body.concept-page .concept-what__card--propose:focus-within .concept-what__num::after,
body.concept-page .concept-what__card--propose:has(h3:hover) .concept-what__num::after,
body.concept-page .concept-what__card--propose:has(h3:focus-visible) .concept-what__num::after {
  content: none;
}

@media screen and (max-width: 960px) {
  body.concept-page .concept-what__grid { grid-template-columns: 1fr 1fr; }
}
@media screen and (max-width: 640px) {
  body.concept-page .concept-what__grid { grid-template-columns: 1fr; gap: 18px; }
  body.concept-page .concept-what__card { padding: 40px 22px 26px; }
  body.concept-page .concept-what__num { font-size: 26px; }
  body.concept-page .concept-what__deco { width: 60px; height: 24px; }
}

/* ==========================================================
   7. CSR
   ========================================================== */
body.concept-page .concept-csr__list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
body.concept-page .concept-csr__block {
  position: relative;
  background: #fff;
  border: 1px solid var(--c-line-soft);
  padding: 32px 36px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
body.concept-page .concept-csr__block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--c-cyan-soft) 0%, var(--c-cyan) 100%);
}
body.concept-page .concept-csr__block:hover {
  border-color: transparent;
  box-shadow: 0 10px 24px rgba(21, 57, 74, 0.06);
}
body.concept-page .concept-csr__block h3 {
  font-size: clamp(17px, 1.5vw, 19px);
  color: var(--c-navy);
  letter-spacing: 0.08em;
  margin: 0 0 14px;
  padding: 0 0 10px;
  border-bottom: 1px dotted var(--c-line);
  font-weight: 600;
  text-align: left;
}
body.concept-page .concept-csr__block p {
  font-size: clamp(13.5px, 1.1vw, 14.5px);
  line-height: 2.05;
  color: var(--c-text-soft);
  margin: 0 0 16px;
  letter-spacing: 0.05em;
}
body.concept-page .concept-csr__block p:last-child { margin-bottom: 0; }

body.concept-page .concept-csr__subhead {
  font-size: clamp(13px, 1.05vw, 14px);
  letter-spacing: 0.1em;
  color: var(--c-navy);
  font-weight: 600;
  margin: 22px 0 6px;
  padding-left: 12px;
  border-left: 2px solid var(--c-cyan);
}

body.concept-page .concept-csr__check {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 22px;
}
body.concept-page .concept-csr__check li {
  position: relative;
  padding: 10px 12px 10px 36px;
  font-size: 14px;
  color: var(--c-text-soft);
  letter-spacing: 0.04em;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line-soft);
  border-left: 2px solid var(--c-stone-mid);
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
}
body.concept-page .concept-csr__check li::before {
  content: '✓';
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: bold;
  color: var(--c-navy);
  border: 1px solid var(--c-stone-mid);
  transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease, transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
body.concept-page .concept-csr__check li::after {
  content: '';
  position: absolute;
  left: -1px;
  top: 50%;
  width: 2px;
  height: 0;
  background: var(--c-cyan);
  box-shadow: 0 0 6px rgba(17, 187, 221, 0.6);
  transform: translateY(-50%);
  transition: height 0.4s ease;
}
body.concept-page .concept-csr__check li:hover {
  background: #fff;
  border-left-color: var(--c-cyan);
  color: var(--c-navy);
  transform: translateX(2px);
}
body.concept-page .concept-csr__check li:hover::before {
  background: var(--c-cyan);
  color: #fff;
  border-color: var(--c-cyan);
  transform: translateY(-50%) rotate(360deg);
}
body.concept-page .concept-csr__check li:hover::after { height: 60%; }

body.concept-page .concept-csr__block--social {
  background: linear-gradient(180deg, var(--c-bg-soft) 0%, #ffffff 100%);
}

/* CSRロゴ */
body.concept-page .concept-csr__logo { margin: 18px 0 0; }
body.concept-page .concept-thumb {
  position: relative;
  display: inline-block;
  overflow: hidden;
  border: 1px solid var(--c-line);
  background: #fff;
  text-decoration: none;
  line-height: 0;
  max-width: 200px;
  transition: border-color 0.25s ease;
}
body.concept-page .concept-thumb img {
  display: block;
  width: 100%;
  height: auto;
  transition: opacity 0.25s ease;
}
body.concept-page .concept-thumb:hover { border-color: var(--c-cyan); }
body.concept-page .concept-thumb:hover img { opacity: 0.92; }
body.concept-page .concept-thumb__btn {
  position: absolute;
  right: 6px;
  bottom: 6px;
  width: 26px;
  height: 26px;
  background: rgba(21, 57, 74, 0.85);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  pointer-events: none;
  transition: background 0.25s ease;
}
body.concept-page .concept-thumb:hover .concept-thumb__btn { background: var(--c-cyan); }
body.concept-page .concept-thumb--logo {
  padding: 16px 22px;
  background: var(--c-bg-soft);
}
body.concept-page .concept-thumb--logo img { max-height: 56px; width: auto; margin: 0 auto; }
body.concept-page .concept-csr__logo figcaption {
  margin-top: 8px;
  font-size: 12px;
  color: var(--c-text-mid);
  letter-spacing: 0.04em;
}

@media screen and (max-width: 640px) {
  body.concept-page .concept-csr__block { padding: 24px 22px; }
  body.concept-page .concept-csr__check { grid-template-columns: 1fr; }
}

/* ==========================================================
   8. CTA — Final Chapter（ダーク背景・スプリットレイアウト）
   ========================================================== */
body.concept-page .concept-cta {
  position: relative;
  /* full-bleed: 親 .content の左右余白を打ち消して画面幅いっぱいに広げる
     100vw ではなく margin の左右を負値にすることでスクロールバーぶんの
     横はみ出しを起こさない */
  width: auto;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  margin-top: 100px;
  padding: 100px 20px 110px;
  max-width: none;
  border: none;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(70% 70% at 30% 20%, rgba(45, 97, 124, 0.55) 0%, transparent 60%),
    radial-gradient(60% 60% at 80% 80%, rgba(17, 187, 221, 0.18) 0%, transparent 60%),
    linear-gradient(180deg, #082031 0%, #0f2c40 50%, #15394a 100%);
}
/* 上下に石の質感（細い斜め罫線） */
body.concept-page .concept-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(120deg, rgba(255,255,255,0.025) 0 1px, transparent 1px 7px),
    repeating-linear-gradient(30deg, rgba(17,187,221,0.04) 0 1px, transparent 1px 11px);
  pointer-events: none;
  z-index: 0;
}
/* 上下フェード */
body.concept-page .concept-cta::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8,32,49,0.7) 0%, transparent 25%, transparent 75%, rgba(8,32,49,0.85) 100%);
  pointer-events: none;
  z-index: 0;
}

body.concept-page .concept-cta__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

/* デジタルグリッド */
body.concept-page .concept-cta__bg-grid {
  position: absolute;
  inset: 8% 6%;
  background-image:
    linear-gradient(rgba(113, 240, 189, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(113, 240, 189, 0.07) 1px, transparent 1px);
  background-size: 38px 38px;
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at center, #000 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 60% 60% at center, #000 30%, transparent 80%);
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 1.4s ease 0.3s, transform 1.4s ease 0.3s;
}
body.concept-page .concept-cta.is-in .concept-cta__bg-grid { opacity: 0.7; transform: scale(1); }

/* 左右の発光 blob */
body.concept-page .concept-cta__bg-glow {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0;
  transition: opacity 2s ease 0.4s;
}
body.concept-page .concept-cta__bg-glow--l {
  top: 10%; left: -120px;
  background: radial-gradient(circle, #71f0bd, transparent 70%);
}
body.concept-page .concept-cta__bg-glow--r {
  bottom: 10%; right: -120px;
  background: radial-gradient(circle, #11bbdd, transparent 70%);
}
body.concept-page .concept-cta.is-in .concept-cta__bg-glow { opacity: 0.5; }

/* 大きな背景ギリシャ文字 */
body.concept-page .concept-cta__bg-greek {
  position: absolute;
  bottom: -8%;
  left: 50%;
  transform: translateX(-50%);
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(180px, 26vw, 360px);
  font-weight: bold;
  color: rgba(113, 240, 189, 0.05);
  text-shadow: 0 1px 0 rgba(255,255,255,0.04);
  letter-spacing: 0.04em;
  user-select: none;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  clip-path: inset(0 100% 0 0);
  transition: clip-path 2.4s cubic-bezier(0.2,0.8,0.2,1) 0.6s, opacity 1s ease 0.6s;
}
body.concept-page .concept-cta.is-in .concept-cta__bg-greek {
  opacity: 1;
  clip-path: inset(0 0% 0 0);
}

/* 星座 */
body.concept-page .concept-cta__bg-stars {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  color: #71f0bd;
  opacity: 0;
  transition: opacity 1.4s ease 0.5s;
}
body.concept-page .concept-cta.is-in .concept-cta__bg-stars { opacity: 0.6; }
body.concept-page .concept-cta__bg-stars-lines line {
  stroke: currentColor;
  stroke-width: 1;
  stroke-dasharray: 220;
  stroke-dashoffset: 220;
  opacity: 0.55;
  filter: drop-shadow(0 0 4px rgba(113,240,189,0.4));
  transition: stroke-dashoffset 1.4s ease;
}
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-lines line { stroke-dashoffset: 0; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-lines line:nth-child(1) { transition-delay: 0.7s; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-lines line:nth-child(2) { transition-delay: 0.85s; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-lines line:nth-child(3) { transition-delay: 1.0s; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-lines line:nth-child(4) { transition-delay: 1.15s; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-lines line:nth-child(5) { transition-delay: 1.3s; }
body.concept-page .concept-cta__bg-stars-dots circle {
  fill: #71f0bd;
  opacity: 0;
  transform: scale(0);
  transform-origin: center;
  transform-box: fill-box;
  filter: drop-shadow(0 0 6px rgba(113,240,189,0.6));
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-dots circle { opacity: 0.85; transform: scale(1); }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-dots circle:nth-child(1) { transition-delay: 0.7s; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-dots circle:nth-child(2) { transition-delay: 0.85s; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-dots circle:nth-child(3) { transition-delay: 1.0s; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-dots circle:nth-child(4) { transition-delay: 1.15s; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-dots circle:nth-child(5) { transition-delay: 1.3s; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-dots circle:nth-child(6) { transition-delay: 1.45s; }
body.concept-page .concept-cta.is-in .concept-cta__bg-stars-dots circle:nth-child(7) { transition-delay: 1.6s; }

/* インナー：左右スプリット */
body.concept-page .concept-cta__inner {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 80px;
  align-items: center;
}

/* 左：見出しエリア */
body.concept-page .concept-cta__head {
  text-align: left;
  position: relative;
}
body.concept-page .concept-cta__chapter {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 12px;
  letter-spacing: 0.5em;
  color: var(--c-cyan-soft);
  font-weight: bold;
  text-transform: uppercase;
  margin-bottom: 22px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s ease 0.5s, transform 0.8s ease 0.5s;
}
body.concept-page .concept-cta.is-in .concept-cta__chapter { opacity: 1; transform: translateY(0); }
body.concept-page .concept-cta__chapter-dash {
  display: inline-block;
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-cyan-soft), transparent);
}

body.concept-page .concept-cta__heading {
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(26px, 4vw, 48px);
  letter-spacing: 0.08em;
  line-height: 1.55;
  color: #fff;
  margin: 0 0 28px;
  font-weight: normal;
  text-shadow: 0 0 18px rgba(0, 0, 0, 0.4);
  overflow-wrap: break-word;
  word-break: break-word;
}
body.concept-page .concept-cta__heading-line {
  display: block;
  opacity: 0;
  transform: translateY(20px);
  clip-path: inset(0 100% 0 0);
  transition:
    opacity 1s cubic-bezier(0.2, 0.8, 0.2, 1) 0.7s,
    transform 1s cubic-bezier(0.2, 0.8, 0.2, 1) 0.7s,
    clip-path 1.4s cubic-bezier(0.2, 0.8, 0.2, 1) 0.7s;
}
body.concept-page .concept-cta__heading-line--accent {
  background: linear-gradient(90deg, var(--c-cyan-soft) 0%, var(--c-cyan-soft) 40%, #ffffff 50%, var(--c-cyan) 60%, var(--c-cyan-soft) 100%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-position: 100% 50%;
  transition-delay: 0.95s, 0.95s, 0.95s;
}
body.concept-page .concept-cta.is-in .concept-cta__heading-line {
  opacity: 1;
  transform: translateY(0);
  clip-path: inset(0 0% 0 0);
}
body.concept-page .concept-cta.is-in .concept-cta__heading-line--accent {
  animation: conceptCtaShine 5s ease-in-out 2.4s infinite;
}
@keyframes conceptCtaShine {
  0%, 100% { background-position: 100% 50%; }
  50% { background-position: 0% 50%; }
}

body.concept-page .concept-cta__lead {
  font-size: clamp(13.5px, 1.15vw, 15.5px);
  letter-spacing: 0.1em;
  line-height: 2;
  color: rgba(220, 235, 244, 0.88);
  margin: 0 0 28px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s ease 1.2s, transform 0.8s ease 1.2s;
}
body.concept-page .concept-cta.is-in .concept-cta__lead { opacity: 1; transform: translateY(0); }

body.concept-page .concept-cta__laurel {
  display: block;
  width: 200px;
  color: var(--c-cyan-soft);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.8s ease 1.4s, transform 0.8s ease 1.4s;
}
body.concept-page .concept-cta__laurel svg { width: 100%; height: auto; display: block; }
body.concept-page .concept-cta.is-in .concept-cta__laurel { opacity: 0.7; transform: translateY(0); }

/* 右：CTAカード2枚 */
body.concept-page .concept-cta__cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

body.concept-page .concept-cta__card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto auto;
  grid-template-areas:
    "meta meta go"
    "title title go"
    "desc desc go"
    "line line line";
  gap: 8px 22px;
  padding: 30px 32px 26px;
  text-decoration: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(113, 240, 189, 0.25);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
  opacity: 0;
  transform: translateX(28px);
  transition:
    opacity 0.9s ease,
    transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1),
    background 0.45s ease,
    border-color 0.45s ease,
    box-shadow 0.45s ease;
}
body.concept-page .concept-cta.is-in .concept-cta__card { opacity: 1; transform: translateX(0); }
body.concept-page .concept-cta.is-in .concept-cta__card--about   { transition-delay: 1.1s; }
body.concept-page .concept-cta.is-in .concept-cta__card--contact { transition-delay: 1.3s; }

/* シャインスイープ */
body.concept-page .concept-cta__card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(113, 240, 189, 0.18) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.85s ease;
  pointer-events: none;
  z-index: 0;
}
body.concept-page .concept-cta__card:hover::after,
body.concept-page .concept-cta__card:focus-visible::after { transform: translateX(100%); }

body.concept-page .concept-cta__card:hover,
body.concept-page .concept-cta__card:focus-visible {
  background:
    linear-gradient(180deg, rgba(113, 240, 189, 0.08) 0%, rgba(17, 187, 221, 0.06) 100%);
  border-color: var(--c-cyan-soft);
  box-shadow:
    0 18px 40px rgba(0, 0, 0, 0.3),
    0 0 0 1px var(--c-cyan-soft) inset;
  outline: none;
}
body.concept-page .concept-cta__card:active { transform: translateY(2px); }

body.concept-page .concept-cta__card > * { position: relative; z-index: 1; }

/* 4隅刻印 */
body.concept-page .concept-cta__card-corner {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1px solid var(--c-cyan-soft);
  z-index: 2;
  opacity: 0.6;
  transition: opacity 0.4s ease;
}
body.concept-page .concept-cta__card-corner--tl { top: 10px; left: 10px; border-right: none; border-bottom: none; }
body.concept-page .concept-cta__card-corner--br { bottom: 10px; right: 10px; border-left: none; border-top: none; }
body.concept-page .concept-cta__card:hover .concept-cta__card-corner,
body.concept-page .concept-cta__card:focus-visible .concept-cta__card-corner { opacity: 1; }

/* meta（番号 + 英字） */
body.concept-page .concept-cta__card-meta {
  grid-area: meta;
  display: flex;
  align-items: baseline;
  gap: 14px;
}
body.concept-page .concept-cta__card-num {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: clamp(28px, 3vw, 36px);
  font-weight: bold;
  letter-spacing: 0.04em;
  color: var(--c-cyan-soft);
  line-height: 1;
}
body.concept-page .concept-cta__card-en {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--c-cyan-soft);
  font-weight: bold;
  text-transform: uppercase;
}

body.concept-page .concept-cta__card-title {
  grid-area: title;
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(18px, 1.7vw, 22px);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: #fff;
  line-height: 1.5;
  margin: 4px 0 0;
}
body.concept-page .concept-cta__card-desc {
  grid-area: desc;
  font-size: 12.5px;
  line-height: 1.85;
  color: rgba(220, 235, 244, 0.78);
  letter-spacing: 0.04em;
  margin-top: 4px;
}

/* go（縦のテキスト + 矢印） */
body.concept-page .concept-cta__card-go {
  grid-area: go;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-left: 18px;
  border-left: 1px solid rgba(113, 240, 189, 0.18);
  height: 100%;
  align-self: stretch;
  transition: border-color 0.4s ease;
}
body.concept-page .concept-cta__card:hover .concept-cta__card-go,
body.concept-page .concept-cta__card:focus-visible .concept-cta__card-go {
  border-left-color: var(--c-cyan);
}
body.concept-page .concept-cta__card-go-text {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 10px;
  letter-spacing: 0.45em;
  color: var(--c-cyan-soft);
  font-weight: bold;
  text-transform: uppercase;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}
body.concept-page .concept-cta__card-go-arrow {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(113, 240, 189, 0.12);
  border: 1px solid var(--c-cyan-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--c-cyan-soft);
  font-size: 14px;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.3s ease, color 0.3s ease;
}
body.concept-page .concept-cta__card:hover .concept-cta__card-go-arrow,
body.concept-page .concept-cta__card:focus-visible .concept-cta__card-go-arrow {
  background: var(--c-cyan-soft);
  color: var(--c-navy);
  transform: rotate(360deg) scale(1.08);
}

/* 下端の進行ライン */
body.concept-page .concept-cta__card-line {
  grid-area: line;
  display: block;
  height: 1px;
  width: 0;
  background: linear-gradient(90deg, var(--c-cyan-soft), var(--c-cyan));
  margin-top: 18px;
  transition: width 0.7s cubic-bezier(0.65, 0, 0.35, 1);
}
body.concept-page .concept-cta__card:hover .concept-cta__card-line,
body.concept-page .concept-cta__card:focus-visible .concept-cta__card-line {
  width: 100%;
}

/* 下端のシーム */
body.concept-page .concept-cta__seam {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-cyan-soft), var(--c-cyan), var(--c-cyan-soft), transparent);
  box-shadow: 0 0 10px rgba(113, 240, 189, 0.5);
  z-index: 2;
  transition: width 1.4s cubic-bezier(0.2, 0.8, 0.2, 1) 1.6s;
}
body.concept-page .concept-cta.is-in .concept-cta__seam { width: 320px; }

@media screen and (max-width: 960px) {
  body.concept-page .concept-cta { padding: 80px 20px 90px; }
  body.concept-page .concept-cta__inner { grid-template-columns: 1fr; gap: 50px; }
  body.concept-page .concept-cta__head { text-align: center; }
  body.concept-page .concept-cta__chapter { justify-content: center; }
  body.concept-page .concept-cta__laurel { margin-left: auto; margin-right: auto; }
}
@media screen and (max-width: 640px) {
  body.concept-page .concept-cta { padding: 60px 16px 80px; margin-top: 70px; }
  body.concept-page .concept-cta__inner { gap: 36px; }
  body.concept-page .concept-cta__heading { font-size: clamp(22px, 6vw, 30px); letter-spacing: 0.06em; }
  body.concept-page .concept-cta__card {
    grid-template-columns: 1fr;
    grid-template-areas:
      "meta"
      "title"
      "desc"
      "go"
      "line";
    gap: 6px 0;
    padding: 22px 20px;
  }
  body.concept-page .concept-cta__card-go {
    flex-direction: row;
    justify-content: space-between;
    padding: 14px 0 0;
    border-left: none;
    border-top: 1px solid rgba(113, 240, 189, 0.18);
    height: auto;
    margin-top: 10px;
  }
  body.concept-page .concept-cta__card-go-text {
    writing-mode: horizontal-tb;
    transform: none;
  }
  body.concept-page .concept-cta__card-title { font-size: clamp(17px, 4.5vw, 20px); letter-spacing: 0.06em; }
}

/* ==========================================================
   v9：各セクション本文の巨大背景シーン
   ========================================================== */
/* conceptページ: 章セクション共通（背景演出・見出し導線） */
body.concept-page .concept-section { isolation: isolate; }
body.concept-page .concept-section__scene {
  position: absolute;
  inset: -60px -10vw 0 -10vw;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

/* 巨大ローマ数字（薄い透かし） */
body.concept-page .concept-section__bg-num {
  position: absolute;
  top: -10px;
  right: 4%;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: clamp(180px, 22vw, 300px);
  font-weight: bold;
  letter-spacing: -0.02em;
  color: rgba(21, 57, 74, 0.05);
  line-height: 1;
  user-select: none;
  opacity: 0;
  transform: translateY(40px) scale(0.96);
  transition: opacity 1.2s cubic-bezier(0.2, 0.8, 0.2, 1) 0.1s, transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1) 0.1s;
}
body.concept-page .concept-section.is-in .concept-section__bg-num {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* 背景の英字／ギリシャ語 */
body.concept-page .concept-section__bg-word {
  position: absolute;
  bottom: 8%;
  left: 4%;
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(60px, 8vw, 110px);
  font-weight: bold;
  letter-spacing: 0.08em;
  color: rgba(17, 187, 221, 0.06);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.4);
  user-select: none;
  white-space: nowrap;
  opacity: 0;
  clip-path: inset(0 100% 0 0);
  transition: opacity 1.4s ease 0.3s, clip-path 1.6s cubic-bezier(0.2, 0.8, 0.2, 1) 0.3s;
}
body.concept-page .concept-section.is-in .concept-section__bg-word {
  opacity: 1;
  clip-path: inset(0 0% 0 0);
}

/* 薄いデジタルグリッド */
body.concept-page .concept-section__bg-grid {
  position: absolute;
  inset: 12% 12%;
  background-image:
    linear-gradient(rgba(17, 187, 221, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 187, 221, 0.05) 1px, transparent 1px);
  background-size: 50px 50px;
  -webkit-mask-image: radial-gradient(ellipse 50% 60% at center, #000 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 50% 60% at center, #000 30%, transparent 80%);
  opacity: 0;
  transition: opacity 1.2s ease 0.4s;
}
body.concept-page .concept-section.is-in .concept-section__bg-grid { opacity: 0.6; }

/* 左右の縦ライン（神殿の柱風） */
body.concept-page .concept-section__bg-line {
  position: absolute;
  top: 20%;
  bottom: 20%;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(17, 187, 221, 0.2) 30%, rgba(17, 187, 221, 0.2) 70%, transparent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 1.4s cubic-bezier(0.2, 0.8, 0.2, 1) 0.5s;
}
body.concept-page .concept-section__bg-line--left  { left: 3%; }
body.concept-page .concept-section__bg-line--right { right: 3%; }
body.concept-page .concept-section.is-in .concept-section__bg-line { transform: scaleY(1); }

/* セクションタイトルのスクロール連動拡張 */
body.concept-page .concept-section.is-in .concept-section__title {
  animation: conceptSectionTitleIn 1.1s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
@keyframes conceptSectionTitleIn {
  0% { opacity: 0; letter-spacing: 0.4em; transform: translateY(20px); }
  60% { opacity: 0.85; letter-spacing: 0.22em; }
  100% { opacity: 1; letter-spacing: 0.18em; transform: translateY(0); }
}

@media screen and (max-width: 960px) {
  body.concept-page .concept-section__bg-num { font-size: clamp(120px, 28vw, 200px); right: 2%; }
  body.concept-page .concept-section__bg-word { font-size: clamp(48px, 12vw, 80px); }
  body.concept-page .concept-section__bg-line { display: none; }
}
@media screen and (max-width: 640px) {
  body.concept-page .concept-section__bg-num { font-size: 110px; opacity: 0.8 !important; }
  body.concept-page .concept-section__bg-word { display: none; }
  body.concept-page .concept-section__bg-grid { display: none; }
}

/* ==========================================================
   ページ全体の背景レイヤー（神殿の柱・星座・薄い光）
     - z-index: -1 で body 背景色より上、コンテンツより下に配置
     - これによって既存 header (position: fixed; z-index: 300) や
       既存 .to_top (position: fixed; z-index: 800) を一切上書きせず、
       メガナビ・トップへ戻るボタンの挙動を保つ
   ========================================================== */
/* conceptページ: 全体背景（柱・星・ベール） */
body.concept-page .concept-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

/* 左右の柱ライン（極めて控えめ） */
body.concept-page .concept-bg__pillar {
  position: absolute;
  top: 8%;
  bottom: 8%;
  width: 1px;
  background:
    linear-gradient(180deg, transparent 0%, rgba(17, 187, 221, 0.18) 18%, rgba(17, 187, 221, 0.18) 82%, transparent 100%);
  opacity: 0;
  transform: scaleY(0.6);
  transform-origin: top;
  animation: conceptBgPillar 2.4s ease-out 0.4s forwards, conceptBgPillarPulse 8s ease-in-out 3s infinite;
}
body.concept-page .concept-bg__pillar--l { left: max(20px, calc((100% - 1320px) / 2)); }
body.concept-page .concept-bg__pillar--r { right: max(20px, calc((100% - 1320px) / 2)); animation-delay: 0.6s, 4s; }
@keyframes conceptBgPillar {
  to { opacity: 1; transform: scaleY(1); }
}
@keyframes conceptBgPillarPulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* 上下から薄く色が抜けるベール */
body.concept-page .concept-bg__veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(80% 40% at 50% 0%, rgba(17, 187, 221, 0.05), transparent 60%),
    radial-gradient(80% 40% at 50% 100%, rgba(17, 187, 221, 0.04), transparent 60%);
}

/* 星座風ドット（左右の余白に薄く） */
body.concept-page .concept-bg__stars {
  position: absolute;
  top: 10%;
  bottom: 10%;
  left: 0;
  right: 0;
  width: 100%;
  height: 80%;
  fill: rgba(17, 187, 221, 0.45);
}
body.concept-page .concept-bg__stars circle {
  opacity: 0;
  animation: conceptBgTwinkle 5s ease-in-out infinite;
}
body.concept-page .concept-bg__stars circle:nth-child(1) { animation-delay: 0s; }
body.concept-page .concept-bg__stars circle:nth-child(2) { animation-delay: -1s; }
body.concept-page .concept-bg__stars circle:nth-child(3) { animation-delay: -2s; }
body.concept-page .concept-bg__stars circle:nth-child(4) { animation-delay: -2.5s; }
body.concept-page .concept-bg__stars circle:nth-child(5) { animation-delay: -3.5s; }
body.concept-page .concept-bg__stars circle:nth-child(6) { animation-delay: -4s; }
@keyframes conceptBgTwinkle {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

/* スマホでは柱・星を非表示にして軽量化 */
@media screen and (max-width: 960px) {
  body.concept-page .concept-bg__stars { display: none; }
  body.concept-page .concept-bg__pillar--l { left: 8px; }
  body.concept-page .concept-bg__pillar--r { right: 8px; }
}
@media screen and (max-width: 640px) {
  body.concept-page .concept-bg__pillar { display: none; }
}

/* ==========================================================
   4-A. 社名の由来 — 語源ストーリーボード（水平3カラム＋枝）
   ========================================================== */
body.concept-page .concept-lineage {
  position: relative;
  margin: 0 auto 56px;
  max-width: 1040px;
  padding: 14px 14px 24px;
}
body.concept-page .concept-lineage__row {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
  z-index: 1;
}

/* ステップ（石板タイル） */
body.concept-page .concept-lineage__step {
  position: relative;
  background: linear-gradient(180deg, #ffffff 0%, var(--c-bg-soft) 100%);
  border: 1px solid var(--c-stone-mid);
  padding: 26px 22px 22px;
  text-align: center;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    0 6px 18px rgba(21, 57, 74, 0.06);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.35s ease,
              border-color 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
}
body.concept-page .concept-lineage__step:hover {
  transform: translateY(-4px);
  border-color: var(--c-cyan);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    0 14px 30px rgba(21, 57, 74, 0.1);
}

/* TECHTONE タイルはネイビー反転（ページの主役） */
body.concept-page .concept-lineage__step--present {
  background: linear-gradient(180deg, var(--c-navy) 0%, #0c2030 100%);
  border-color: var(--c-navy);
  color: #fff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 10px 28px rgba(8, 32, 49, 0.28);
}
body.concept-page .concept-lineage__step--present:hover {
  border-color: var(--c-cyan-soft);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 16px 34px rgba(8, 32, 49, 0.36);
}

/* 四隅装飾 */
body.concept-page .concept-lineage__corner {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1px solid var(--c-cyan);
  z-index: 2;
  opacity: 0;
  transition: opacity 0.45s ease 0.2s;
}
body.concept-page .concept-section.is-in .concept-lineage__corner { opacity: 1; }
body.concept-page .concept-lineage__step--present .concept-lineage__corner {
  border-color: var(--c-cyan-soft);
}
body.concept-page .concept-lineage__corner--tl { top: 6px; left: 6px; border-right: none; border-bottom: none; }
body.concept-page .concept-lineage__corner--tr { top: 6px; right: 6px; border-left: none; border-bottom: none; }
body.concept-page .concept-lineage__corner--bl { bottom: 6px; left: 6px; border-right: none; border-top: none; }
body.concept-page .concept-lineage__corner--br { bottom: 6px; right: 6px; border-left: none; border-top: none; }

body.concept-page .concept-lineage__era {
  display: inline-block;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 10px;
  letter-spacing: 0.35em;
  color: var(--c-cyan);
  text-transform: uppercase;
  font-weight: bold;
  margin-bottom: 14px;
  padding: 2px 10px;
  border: 1px solid var(--c-stone-mid);
  border-radius: 1px;
}
body.concept-page .concept-lineage__step--present .concept-lineage__era {
  color: var(--c-cyan-soft);
  border-color: rgba(113, 240, 189, 0.4);
}

body.concept-page .concept-lineage__word {
  display: block;
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: clamp(28px, 3vw, 36px);
  font-weight: bold;
  letter-spacing: 0.08em;
  color: var(--c-navy);
  line-height: 1.2;
  margin-bottom: 6px;
}
body.concept-page .concept-lineage__step--present .concept-lineage__word { color: #fff; }
body.concept-page .concept-lineage__word--brand {
  font-family: 'Trebuchet MS', sans-serif;
  background: linear-gradient(90deg, var(--c-cyan-soft) 0%, var(--c-cyan-soft) 40%, #ffffff 50%, var(--c-cyan) 60%, var(--c-cyan-soft) 100%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-position: 100% 50%;
  animation: conceptBrandShine 5s ease-in-out 1s infinite;
}

body.concept-page .concept-lineage__reading {
  display: block;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--c-text-mid);
  margin-bottom: 12px;
}
body.concept-page .concept-lineage__step--present .concept-lineage__reading {
  color: rgba(220, 235, 244, 0.7);
}

body.concept-page .concept-lineage__meaning {
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--c-text-soft);
  letter-spacing: 0.04em;
  margin: 0 0 14px;
  min-height: 2.6em;
}
body.concept-page .concept-lineage__step--present .concept-lineage__meaning {
  color: rgba(220, 235, 244, 0.85);
}

/* 枝（branches）：各語が示す意味のまとめ */
body.concept-page .concept-lineage__branches {
  list-style: none;
  margin: auto 0 0;
  padding: 12px 0 0;
  border-top: 1px dotted var(--c-stone-mid);
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  justify-content: center;
}
body.concept-page .concept-lineage__step--present .concept-lineage__branches {
  border-top-color: rgba(113, 240, 189, 0.3);
}
body.concept-page .concept-lineage__branches li {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-navy);
  font-weight: 600;
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
}
body.concept-page .concept-lineage__step--present .concept-lineage__branches li {
  color: #fff;
}
body.concept-page .concept-lineage__branches li span {
  color: var(--c-cyan);
  margin-right: 2px;
}
body.concept-page .concept-lineage__step--present .concept-lineage__branches li span {
  color: var(--c-cyan-soft);
}

/* ステップを繋ぐ横ライン（PC のみ） */
body.concept-page .concept-lineage__connect {
  position: absolute;
  top: 100px;
  left: calc(33.33% - 30px);
  right: calc(33.33% - 30px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-cyan-soft), var(--c-cyan), var(--c-cyan-soft), transparent);
  z-index: 0;
  opacity: 0;
  transition: opacity 0.6s ease 0.4s;
}
body.concept-page .concept-section.is-in .concept-lineage__connect { opacity: 1; }
body.concept-page .concept-lineage__connect-pulse {
  position: absolute;
  top: -3px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-cyan-soft);
  box-shadow: 0 0 8px var(--c-cyan-soft), 0 0 18px rgba(113, 240, 189, 0.6);
  opacity: 0;
}
body.concept-page .concept-section.is-in .concept-lineage__connect-pulse {
  animation: conceptLineageConnectPulse 4s ease-in-out 1s infinite;
}
@keyframes conceptLineageConnectPulse {
  0% { left: 0; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { left: calc(100% - 7px); opacity: 0; }
}

/* 接続タグ「語源」「語根」 */
body.concept-page .concept-lineage__connect-tag {
  position: absolute;
  top: 100px;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--c-cyan);
  font-weight: bold;
  background: var(--c-bg);
  padding: 2px 10px;
  border: 1px solid var(--c-line);
  transform: translate(-50%, -50%);
  z-index: 2;
  opacity: 0;
  transition: opacity 0.6s ease 0.6s;
}
body.concept-page .concept-section.is-in .concept-lineage__connect-tag { opacity: 1; }
body.concept-page .concept-lineage__connect-tag--1 { left: 33.33%; }
body.concept-page .concept-lineage__connect-tag--2 { left: 66.67%; }

/* 順次表示の遅延 */
body.concept-page .concept-lineage__step.concept-reveal { transition-delay: 0s; }
body.concept-page .concept-lineage__step[data-step="2"].concept-reveal { transition-delay: 0.18s; }
body.concept-page .concept-lineage__step[data-step="3"].concept-reveal { transition-delay: 0.36s; }

@media screen and (max-width: 768px) {
  body.concept-page .concept-lineage__row { grid-template-columns: 1fr; gap: 14px; }
  body.concept-page .concept-lineage__connect,
  body.concept-page .concept-lineage__connect-tag { display: none; }
  body.concept-page .concept-lineage__step { padding: 22px 20px 18px; }
  body.concept-page .concept-lineage__meaning { min-height: 0; }
}

/* ==========================================================
   prefers-reduced-motion
   ========================================================== */
@media (prefers-reduced-motion: reduce) {
  body.concept-page *,
  body.concept-page *::before,
  body.concept-page *::after {
    animation: none !important;
    transition: none !important;
  }
  body.concept-page .concept-reveal,
  body.concept-page .concept-hero__title,
  body.concept-page .concept-hero__copy,
  body.concept-page .concept-hero__lead,
  body.concept-page .concept-hero__en,
  body.concept-page .concept-hero__scroll,
  body.concept-page .concept-hero__greek,
  body.concept-page .concept-hero__pillar-shaft,
  body.concept-page .concept-hero__pillar-cap,
  body.concept-page .concept-hero__pillar-base,
  body.concept-page .concept-hero__grid,
  body.concept-page .concept-hero__network-lines line,
  body.concept-page .concept-hero__network-dots circle {
    opacity: 1 !important;
    transform: none !important;
    clip-path: none !important;
    stroke-dashoffset: 0 !important;
  }
  body.concept-page .concept-hero__seam { width: 280px !important; opacity: 1 !important; }
  body.concept-page .concept-hero__network { opacity: 0.45 !important; }
  body.concept-page .concept-bg__pillar { transform: scaleY(1) !important; opacity: 0.5 !important; }
  body.concept-page .concept-bg__stars circle { opacity: 0.5 !important; }
  body.concept-page .concept-lineage__corner { opacity: 1 !important; }
  body.concept-page .concept-lineage__connect,
  body.concept-page .concept-lineage__connect-tag { opacity: 1 !important; }
  body.concept-page .concept-lineage__connect-pulse { display: none; }
}
/* ==========================================================
   v7：スクロール連動 sticky stage（社名の由来）
   ========================================================== */
body.concept-page .concept-origin__stage {
  position: relative;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 60px;
  align-items: start;
  margin: 30px auto 0;
  max-width: 1100px;
}

/* 左側：sticky 表示エリア（既存ヘッダー高さ 90px + 余白） */
body.concept-page .concept-origin__stage-fix {
  position: sticky;
  top: 110px;
  align-self: start;
}
body.concept-page .concept-origin__stage-fix-inner {
  position: relative;
  background: linear-gradient(180deg, var(--c-bg-soft) 0%, #ffffff 100%);
  border: 1px solid var(--c-line);
  padding: 28px 24px 32px;
  overflow: hidden;
}
body.concept-page .concept-origin__stage-fix-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-cyan-soft), var(--c-cyan), var(--c-cyan-soft));
}
body.concept-page .concept-origin__stage-eyebrow {
  display: block;
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 10px;
  letter-spacing: 0.45em;
  color: var(--c-cyan);
  font-weight: bold;
  margin-bottom: 22px;
  text-transform: uppercase;
}

/* 4ステップのギリシャ語スタック */
body.concept-page .concept-origin__stage-glyphs {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
body.concept-page .concept-origin__stage-glyph {
  position: relative;
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 8px 4px 10px;
  border-bottom: 1px dotted var(--c-line);
  opacity: 0.4;
  filter: blur(0.3px);
  transition: opacity 0.5s ease, filter 0.5s ease, transform 0.5s ease;
}
body.concept-page .concept-origin__stage-glyph:last-child { border-bottom: 0; }

/* アクティブ状態：くっきり光る */
body.concept-page .concept-origin__stage-glyph.is-active {
  opacity: 1;
  filter: blur(0);
  transform: translateX(2px);
}
body.concept-page .concept-origin__stage-glyph.is-active::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 70%;
  background: linear-gradient(180deg, transparent, var(--c-cyan) 30%, var(--c-cyan) 70%, transparent);
  box-shadow: 0 0 8px rgba(17, 187, 221, 0.5);
  animation: conceptStagePulse 2s ease-in-out infinite;
}
@keyframes conceptStagePulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

body.concept-page .concept-origin__stage-rank {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
  font-weight: bold;
}
body.concept-page .concept-origin__stage-word {
  font-family:
    'ヒラギノ明朝 ProN W3', 'Hiragino Mincho ProN', '游明朝', YuMincho, serif;
  font-size: 26px;
  font-weight: bold;
  letter-spacing: 0.06em;
  color: var(--c-navy);
  line-height: 1.2;
  display: block;
}
body.concept-page .concept-origin__stage-word--brand {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 24px;
  letter-spacing: 0.14em;
}
body.concept-page .concept-origin__stage-word--jp {
  font-size: 22px;
  letter-spacing: 0.16em;
}
body.concept-page .concept-origin__stage-glyph.is-active .concept-origin__stage-word {
  color: var(--c-navy);
  text-shadow: 0 0 18px rgba(17, 187, 221, 0.18);
  animation: conceptStageWordIn 0.55s cubic-bezier(0.2, 0.8, 0.2, 1);
}
@keyframes conceptStageWordIn {
  0% { opacity: 0.4; letter-spacing: 0.22em; transform: translateX(-4px); }
  60% { opacity: 0.85; letter-spacing: 0.1em; }
  100% { opacity: 1; letter-spacing: inherit; transform: translateX(0); }
}
body.concept-page .concept-origin__stage-reading {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-text-mid);
  margin-top: 4px;
  grid-column: 2;
  font-family: 'Trebuchet MS', sans-serif;
}

/* 進行ライン */
body.concept-page .concept-origin__stage-progress {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--c-line);
  position: relative;
  overflow: hidden;
}
body.concept-page .concept-origin__stage-progress-line {
  position: absolute;
  inset: 0;
  width: 25%;
  background: linear-gradient(90deg, var(--c-cyan-soft), var(--c-cyan));
  transition: width 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
body.concept-page .concept-origin__stage[data-active-step="2"] .concept-origin__stage-progress-line { width: 50%; }
body.concept-page .concept-origin__stage[data-active-step="3"] .concept-origin__stage-progress-line { width: 75%; }
body.concept-page .concept-origin__stage[data-active-step="4"] .concept-origin__stage-progress-line { width: 100%; }

/* 右側：本文記事はそのまま記事レイアウト */
body.concept-page .concept-origin__stage > .concept-origin__article {
  margin: 0;
  max-width: none;
}

/* ステップ要素（記事側）にアクティブで上端の光を付与 */
body.concept-page .concept-origin__article > [data-concept-step] {
  position: relative;
  transition: transform 0.4s ease;
}
body.concept-page .concept-origin__article > [data-concept-step].is-active {
  transform: translateY(-2px);
}

/* タブレット以下：sticky を解除して通常縦並び */
@media screen and (max-width: 960px) {
  body.concept-page .concept-origin__stage {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 24px;
  }
  body.concept-page .concept-origin__stage-fix {
    position: static;
  }
  body.concept-page .concept-origin__stage-glyphs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  body.concept-page .concept-origin__stage-glyph {
    border-bottom: 1px dotted var(--c-line);
    opacity: 1;
    filter: none;
  }
  body.concept-page .concept-origin__stage-glyph::before { display: none; }
  body.concept-page .concept-origin__stage-word { font-size: 20px; }
  body.concept-page .concept-origin__stage-word--brand { font-size: 18px; }
}
@media screen and (max-width: 640px) {
  body.concept-page .concept-origin__stage-glyphs { grid-template-columns: 1fr; }
}

/* ==========================================================
   v7：企業理念オービット SVG
   ========================================================== */
body.concept-page .concept-philosophy__layout {
  isolation: isolate;
}
body.concept-page .concept-philosophy__orbit {
  position: absolute;
  inset: -10px;
  width: calc(100% + 20px);
  height: calc(100% + 20px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}
body.concept-page .concept-philosophy__orbit-ring {
  opacity: 0;
  transform-origin: 400px 260px;
  transform: scale(0.8);
  transition: opacity 1.4s ease 0.2s, transform 1.4s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s;
}
body.concept-page .concept-section.is-in .concept-philosophy__orbit-ring {
  opacity: 1;
  transform: scale(1);
}
body.concept-page .concept-philosophy__orbit-arc {
  stroke-dasharray: 320;
  stroke-dashoffset: 320;
  transition: stroke-dashoffset 1.6s cubic-bezier(0.65, 0, 0.35, 1);
}
body.concept-page .concept-section.is-in .concept-philosophy__orbit-arc--top   { transition-delay: 0.4s;  stroke-dashoffset: 0; }
body.concept-page .concept-section.is-in .concept-philosophy__orbit-arc--left  { transition-delay: 0.8s;  stroke-dashoffset: 0; }
body.concept-page .concept-section.is-in .concept-philosophy__orbit-arc--right { transition-delay: 1.2s;  stroke-dashoffset: 0; }

/* カード・中央メッセージは SVG より前面 */
body.concept-page .concept-philosophy__layout > * {
  position: relative;
  z-index: 1;
}

/* スクロールでアクティブカードに光リング */
body.concept-page .concept-philosophy__card.is-step-active {
  border-top-color: var(--c-cyan);
  box-shadow:
    0 14px 30px rgba(21, 57, 74, 0.1),
    0 0 0 1px var(--c-cyan-soft);
}
body.concept-page .concept-philosophy__card.is-step-active::before {
  transform: scaleX(1);
}

@media screen and (max-width: 960px) {
  body.concept-page .concept-philosophy__orbit { display: none; }
}

/* ==========================================================
   v7：What's TECHTONE? カード順次活性化
   ========================================================== */
body.concept-page .concept-what__card[data-card-index] {
  opacity: 0;
  transform: translateY(26px) scale(0.97);
  transition:
    opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.9s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.4s ease,
    border-color 0.4s ease;
}
body.concept-page .concept-what__card[data-card-index].is-card-in {
  opacity: 1;
  transform: translateY(0) scale(1);
}
body.concept-page .concept-what__card[data-card-index="1"].is-card-in { transition-delay: 0s; }
body.concept-page .concept-what__card[data-card-index="2"].is-card-in { transition-delay: 0.18s; }
body.concept-page .concept-what__card[data-card-index="3"].is-card-in { transition-delay: 0.36s; }
body.concept-page .concept-what__card[data-card-index]:hover { transition-delay: 0s; }

body.concept-page .concept-what__puzzle {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  pointer-events: none;
  z-index: 0;
}
body.concept-page .concept-what__puzzle-tile {
  opacity: 0;
  border: 1px solid rgba(40, 177, 212, 0.18);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.75), rgba(215, 245, 255, 0.32));
  transform: scale(0.88);
}
body.concept-page .concept-what__card.is-card-in .concept-what__puzzle-tile {
  animation: conceptPuzzleTile 0.95s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
body.concept-page .concept-what__card.is-card-in .concept-what__puzzle-tile:nth-child(1) { animation-delay: 0.03s; }
body.concept-page .concept-what__card.is-card-in .concept-what__puzzle-tile:nth-child(2) { animation-delay: 0.1s; }
body.concept-page .concept-what__card.is-card-in .concept-what__puzzle-tile:nth-child(3) { animation-delay: 0.18s; }
body.concept-page .concept-what__card.is-card-in .concept-what__puzzle-tile:nth-child(4) { animation-delay: 0.26s; }
body.concept-page .concept-what__card.is-card-in .concept-what__puzzle-tile:nth-child(5) { animation-delay: 0.34s; }
body.concept-page .concept-what__card.is-card-in .concept-what__puzzle-tile:nth-child(6) { animation-delay: 0.42s; }

@keyframes conceptPuzzleTile {
  0% { opacity: 0.92; transform: scale(0.88); filter: blur(1.2px); }
  65% { opacity: 0.28; transform: scale(1); filter: blur(0); }
  100% { opacity: 0; transform: scale(1.04); }
}

/* ==========================================================
   v7：ヒーロー離脱フェード（スクロールで次セクションへつながる感覚）
   ========================================================== */
body.concept-page .concept-hero {
  transition: opacity 0.6s ease, filter 0.6s ease;
}
body.concept-page.concept-hero-leaving .concept-hero {
  opacity: 0.55;
  filter: saturate(0.9);
}

/* ==========================================================
   v8：章インジケーター（右側固定・PC のみ）
   ========================================================== */
body.concept-page .concept-chapter {
  position: fixed;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;          /* header(300) / .to_top(800) より下 */
  pointer-events: none;
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease;
}
@media (min-width: 1100px) {
  body.concept-page .concept-chapter { display: block; }
}
body.concept-page.concept-chapter-on .concept-chapter {
  opacity: 1;
  pointer-events: auto;
}

body.concept-page .concept-chapter__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 14px;
}

/* 現在章 大表示 */
body.concept-page .concept-chapter__current {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--c-accent);
  font-weight: bold;
  text-align: right;
}
body.concept-page .concept-chapter__current-num {
  display: inline-block;
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--c-navy);
  vertical-align: -2px;
  transition: color 0.3s ease;
}
body.concept-page .concept-chapter__current-of {
  color: var(--c-text-mid);
  font-size: 12px;
}

/* 縦レール */
body.concept-page .concept-chapter__rail {
  position: relative;
  display: block;
  width: 1px;
  height: 90px;
  background: var(--c-line);
  margin-right: 8px;
}
body.concept-page .concept-chapter__rail-fill {
  position: absolute;
  inset: 0 0 auto 0;
  width: 1px;
  height: 0;
  background: linear-gradient(180deg, var(--c-accent-soft), var(--c-accent));
  transition: height 0.5s cubic-bezier(0.65, 0, 0.35, 1);
  box-shadow: 0 0 6px rgba(17, 187, 221, 0.5);
}

/* 章リスト */
body.concept-page .concept-chapter__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
body.concept-page .concept-chapter__item {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 4px 0;
  cursor: pointer;
  text-align: right;
  transition: color 0.3s ease;
}
body.concept-page .concept-chapter__item::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 1px;
  background: var(--c-line);
  flex-shrink: 0;
  order: 2;
  transition: width 0.4s ease, background 0.3s ease;
}
body.concept-page .concept-chapter__item.is-active::before {
  width: 36px;
  background: var(--c-accent);
}
body.concept-page .concept-chapter__num {
  font-family: 'Trebuchet MS', sans-serif;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--c-text-mid);
  font-weight: bold;
  order: 1;
  transition: color 0.3s ease;
}
body.concept-page .concept-chapter__item.is-active .concept-chapter__num {
  color: var(--c-accent);
}
body.concept-page .concept-chapter__title {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-text-mid);
  order: 0;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(8px);
  transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}
body.concept-page .concept-chapter__item.is-active .concept-chapter__title {
  opacity: 1;
  transform: translateX(0);
  color: var(--c-navy);
  font-weight: 600;
}

/* /concept.html 専用スタイル ここまで */

/* スクロール表示モーション（左右フライイン + パズル組み上げ） */
.scroll-motion {
  --scroll-delay: 0s;
  opacity: 1;
}

.scroll-motion--ready {
  opacity: 0;
  filter: blur(6px);
  transition:
    opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1) var(--scroll-delay),
    transform 0.9s cubic-bezier(0.16, 1, 0.3, 1) var(--scroll-delay),
    filter 0.9s ease var(--scroll-delay);
  will-change: transform, opacity, filter;
}

.scroll-motion--left.scroll-motion--ready {
  transform: translate3d(-90px, 22px, 0) rotate(-6deg) scale(0.92);
}

.scroll-motion--right.scroll-motion--ready {
  transform: translate3d(90px, 22px, 0) rotate(6deg) scale(0.92);
}

.scroll-motion--puzzle.scroll-motion--ready {
  transform: translate3d(0, 70px, 0) scale(0.82);
  clip-path: polygon(0 0, 46% 0, 52% 18%, 100% 10%, 100% 100%, 0 100%);
}

.scroll-motion--ready.is-in {
  opacity: 1;
  filter: blur(0);
  transform: translate3d(0, 0, 0) rotate(0) scale(1);
}

.scroll-motion--puzzle.scroll-motion--ready.is-in {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

@media (prefers-reduced-motion: reduce) {
  .scroll-motion,
  .scroll-motion--ready,
  .scroll-motion--left.scroll-motion--ready,
  .scroll-motion--right.scroll-motion--ready,
  .scroll-motion--puzzle.scroll-motion--ready {
    opacity: 1;
    filter: none;
    transform: none;
    clip-path: none;
    transition: none;
  }
}

/* concept: GSAP章タイムライン + データビジュアル */
body.concept-page .concept-morph {
  max-width: 1100px;
  margin: 24px auto 72px;
  padding: 0 20px;
}
body.concept-page .concept-morph__title { font-size: clamp(24px, 3vw, 36px); text-align: center; }
body.concept-page .concept-morph__lead { text-align: center; margin: 8px auto 20px; color: #335; }
body.concept-page .concept-morph__stage {
  position: relative; min-height: 360px; border: 1px solid rgba(40,120,160,.3); border-radius: 16px;
  background: linear-gradient(160deg, rgba(255,255,255,.92), rgba(233,244,248,.85)); overflow: hidden;
}
body.concept-page .concept-morph__canvas { position: relative; height: 360px; }
body.concept-page .concept-morph__node {
  position: absolute; transform: translate(-50%, -50%); padding: 6px 12px; border-radius: 99px;
  border: 1px solid rgba(17,80,120,.28); background: #fff; font-size: 13px; color: #15394a;
}
body.concept-page .concept-morph__link {
  position: absolute; left: 20%; right: 20%; top: 50%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(17,95,130,.45), transparent); opacity: .55;
}
body.concept-page .concept-morph__link:nth-child(2){ top: 34%; }
body.concept-page .concept-morph__link:nth-child(3){ top: 66%; }
body.concept-page .concept-morph__link:nth-child(4){ transform: rotate(18deg); }
body.concept-page .concept-morph__link:nth-child(5){ transform: rotate(-22deg); }
body.concept-page .concept-morph__link:nth-child(6){ transform: rotate(6deg); }

body.concept-page .concept-what__puzzle-tile { will-change: transform, opacity; }
body.concept-page.concept-motion-reduced .concept-what__puzzle-tile { display: none; }
body.concept-page.concept-motion-reduced .concept-what__card > * { opacity: 1 !important; transform: none !important; }

@media screen and (max-width: 768px) {
  body.concept-page .concept-morph__stage, body.concept-page .concept-morph__canvas { min-height: 280px; height: 280px; }
  body.concept-page .concept-morph__node { font-size: 12px; padding: 5px 10px; }
}

/* Snap Layout */
.concept-page .concept-snap-container {
  scroll-snap-type: y mandatory;
}
.concept-page .concept-hero,
.concept-page .concept-section {
  min-height: 100vh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
}
.concept-page .concept-section {
  position: relative;
  overflow: clip;
}
.concept-page .section-bg {
  position: absolute;
  inset: -10% 0;
  pointer-events: none;
  z-index: 0;
  background: transparent;
  transform: translate3d(0, var(--parallax-shift, 0px), 0);
  transition: transform 0.4s linear, opacity 0.4s ease;
  opacity: 0;
}
.concept-page .concept-section.is-active .section-bg { opacity: 0.9; }
.concept-page .concept-section > *:not(.section-bg) { position: relative; z-index: 1; }

/* Intro Mask */
.concept-intro-mask {
  position: fixed;
  inset: 0;
  z-index: 600;
  display: none;
  pointer-events: none;
}
.concept-intro-mask__left,
.concept-intro-mask__right {
  flex: 1;
  background: #0a1c25;
  transform: scaleX(1);
  transform-origin: center;
}
.concept-intro-mask.is-done { opacity: 0; visibility: hidden; transition: opacity 0.4s ease, visibility 0.4s ease; }
.concept-intro-mask.is-open .concept-intro-mask__left { animation: intro-mask-open-left 0.9s ease forwards; }
.concept-intro-mask.is-open .concept-intro-mask__right { animation: intro-mask-open-right 0.9s ease forwards; }
@keyframes intro-mask-open-left { to { transform: scaleX(0); transform-origin: left; } }
@keyframes intro-mask-open-right { to { transform: scaleX(0); transform-origin: right; } }

/* Text Reveal */
.concept-text-line {
  display: block;
  transform: translateY(18px);
  opacity: 0;
  transition: transform 0.55s ease, opacity 0.55s ease;
  will-change: transform, opacity;
}
.concept-text-line.is-in { transform: translateY(0); opacity: 1; }


@media (prefers-reduced-motion: reduce) {
  .concept-page .concept-snap-container { scroll-snap-type: none; }
  .concept-page .section-bg,
  .concept-text-line,
  .concept-intro-mask__left,
  .concept-intro-mask__right { animation: none !important; transition: none !important; transform: none !important; opacity: 1; }
  .concept-intro-mask { display: none; }
}

/* トップスライダー表示補正 */
#index_top {
  position: relative;
  overflow: hidden;
  background-image: url('/img/slide/top01.webp');
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

#index_top .sm-slider {
  position: absolute !important;
  inset: 0 !important;
  z-index: 0 !important;
}

#index_top .sm-slider li,
#index_top .sm-slider li span {
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
}

#index_top .sm-slider li span {
  background-size: cover !important;
  background-position: center center !important;
  background-repeat: no-repeat !important;
}

#index_top #top_catch {
  z-index: 10;
}

/* =========================================================
   concept.html 専用 最終リセット
   - メガナビ / Index / Chapters の白抜け・透明化バグ対策
   - currentColor 依存を避け、表示色を明示する
   ========================================================= */

/* ------------------------------
   PCメガナビ復旧
------------------------------ */
@media screen and (min-width: 961px) {
  body.concept-page header {
    z-index: 5000 !important;
  }

  body.concept-page .tt-morph-bg {
    z-index: 4890 !important;
  }

  body.concept-page #pc_nav {
    position: relative;
    z-index: 5010 !important;
  }

  body.concept-page #pc_nav > ul > li:not(.contact) > a {
    color: #142033 !important;
    -webkit-text-fill-color: #142033 !important;
    opacity: 1 !important;
    visibility: visible !important;
    mix-blend-mode: normal !important;
  }

  body.concept-page #pc_nav > ul > li.contact > a {
    color: #fff !important;
    -webkit-text-fill-color: #fff !important;
    opacity: 1 !important;
    visibility: visible !important;
    mix-blend-mode: normal !important;
  }

  body.concept-page #pc_nav .mega-panel {
    z-index: 5020 !important;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    mix-blend-mode: normal !important;
    filter: none !important;
  }

  body.concept-page #pc_nav .mega-parent.open > .mega-panel,
  body.concept-page #pc_nav .mega-parent.touch-open > .mega-panel,
  body.concept-page #pc_nav .mega-parent:hover > .mega-panel,
  body.concept-page #pc_nav .mega-parent:focus-within > .mega-panel {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
  }

  body.concept-page #pc_nav .mega-panel .mega-inner,
  body.concept-page #pc_nav .mega-panel .mega-col,
  body.concept-page #pc_nav .mega-panel .mega-card,
  body.concept-page #pc_nav .mega-panel .mega-links,
  body.concept-page #pc_nav .mega-panel .mega-media,
  body.concept-page #pc_nav .mega-panel .mega-cta-stack {
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    mix-blend-mode: normal !important;
    filter: none !important;
  }

  body.concept-page #pc_nav .mega-panel img {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
    filter: none !important;
    mix-blend-mode: normal !important;
  }

  body.concept-page #pc_nav .mega-panel .jp-title,
  body.concept-page #pc_nav .mega-panel .mega-link-main,
  body.concept-page #pc_nav .mega-panel .mega-links a,
  body.concept-page #pc_nav .mega-panel .mega-recruit-cta strong {
    background: none !important;
    color: #142033 !important;
    -webkit-text-fill-color: #142033 !important;
    -webkit-background-clip: border-box !important;
    background-clip: border-box !important;
    opacity: 1 !important;
    visibility: visible !important;
    mix-blend-mode: normal !important;
    filter: none !important;
  }

  body.concept-page #pc_nav .mega-panel .en-title,
  body.concept-page #pc_nav .mega-panel .mega-title {
    background: none !important;
    color: #657289 !important;
    -webkit-text-fill-color: #657289 !important;
    -webkit-background-clip: border-box !important;
    background-clip: border-box !important;
    opacity: 1 !important;
    visibility: visible !important;
    mix-blend-mode: normal !important;
    filter: none !important;
  }

  body.concept-page #pc_nav .mega-panel .mega-cta-eyebrow,
  body.concept-page #pc_nav .mega-panel .mega-cta-link {
    background: none !important;
    color: #123f92 !important;
    -webkit-text-fill-color: #123f92 !important;
    opacity: 1 !important;
    visibility: visible !important;
  }

  body.concept-page #pc_nav .mega-panel .mega-card li > a > span,
  body.concept-page #pc_nav .mega-panel .mega-media .mega-pick-card span,
  body.concept-page #pc_nav .mega-panel .mega-recruit-cta::after {
    color: #fff !important;
    -webkit-text-fill-color: #fff !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
}

/* ------------------------------
   Index / Chapters 復旧
------------------------------ */
body.concept-page .concept-local-nav.concept-reveal,
body.concept-page .concept-local-nav {
  opacity: 1 !important;
  visibility: visible !important;
  transform: none !important;
  mix-blend-mode: normal !important;
  filter: none !important;
}

body.concept-page .concept-local-nav__inner,
body.concept-page .concept-local-nav__head,
body.concept-page .concept-local-nav__list,
body.concept-page .concept-local-nav__item,
body.concept-page .concept-local-nav__link {
  position: relative;
  z-index: 2;
  opacity: 1 !important;
  visibility: visible !important;
  mix-blend-mode: normal !important;
  filter: none !important;
}

body.concept-page .concept-local-nav__bg,
body.concept-page .concept-local-nav__bg *,
body.concept-page .concept-local-nav__beam,
body.concept-page .concept-local-nav__corner,
body.concept-page .concept-local-nav__arrow {
  pointer-events: none;
}

body.concept-page .concept-local-nav__eyebrow,
body.concept-page .concept-local-nav__title-en,
body.concept-page .concept-local-nav__num,
body.concept-page .concept-local-nav__en,
body.concept-page .concept-local-nav__label,
body.concept-page .concept-local-nav__sub {
  position: relative;
  z-index: 3;
  background: none !important;
  -webkit-background-clip: border-box !important;
  background-clip: border-box !important;
  opacity: 1 !important;
  visibility: visible !important;
  mix-blend-mode: normal !important;
  filter: none !important;
  text-shadow: none !important;
}

body.concept-page .concept-local-nav__eyebrow,
body.concept-page .concept-local-nav__title-en {
  color: #0a4f97 !important;
  -webkit-text-fill-color: #0a4f97 !important;
}

body.concept-page .concept-local-nav__label {
  color: #15394a !important;
  -webkit-text-fill-color: #15394a !important;
}

body.concept-page .concept-local-nav__num,
body.concept-page .concept-local-nav__en,
body.concept-page .concept-local-nav__sub {
  color: #455a66 !important;
  -webkit-text-fill-color: #455a66 !important;
}

/* ===== concept本文背景エフェクト無効化（2026-05） ===== */
body.concept-page .concept-bg,
body.concept-page .concept-section__scene {
  display: none;
}