/* ================================================================
   Soul Sync's — style.css  (完全リライト)
   Brand Guidelines v1.1
   ================================================================
   設計原則
   ・ナビは z-index:1000 / position:fixed で常に最前面
   ・セクションは z-index を設定しない（干渉させない）
   ・同心円リングの animation は CSS のみで制御
     JS は opacity のみ操作し、transform には一切触れない
   ・background は全面アイボリー系（RED/GOLD は線・点のみ）
================================================================ */

/* ----------------------------------------------------------------
   0. CSS CUSTOM PROPERTIES
---------------------------------------------------------------- */
:root {
  /* Surfaces */
  --c-ivory:    #F5F1EB;
  --c-ivory-d:  #EDE9E2;
  --c-ivory-dd: #E4DFD7;

  /* Text */
  --c-charcoal: #1A1916;
  --c-ash:      #8A8478;
  --c-ash-lt:   #C4BFB5;

  /* Border */
  --c-border:    #DDD9D2;
  --c-border-lt: #EAE6DF;

  /* Accent — 線・点のみ使用 */
  --c-red:      #DE3F2C;
  --c-gold:     #B8900A;
  --c-gold-br:  #FBCC00;

  /* Dawn gradient colors */
  --c-dawn-mid: #F08A14;

  /* Fonts */
  --f-display: 'DM Serif Display', Georgia, serif;
  --f-mincho:  'Shippori Mincho', 'Yu Mincho', serif;
  --f-sans:    'Noto Sans JP', 'Helvetica Neue', sans-serif;
  --f-ui:      'Inter', 'Helvetica Neue', sans-serif;

  /* Spacing */
  --s1: 0.5rem;  --s2: 1rem;   --s3: 1.5rem;
  --s4: 2rem;    --s5: 3rem;   --s6: 4rem;
  --s7: 6rem;    --s8: 8rem;   --s9: 12rem;

  /* Layout */
  --wrap:      1400px;
  --wrap-wide: 1560px;
  --wrap-px:   clamp(2rem, 5vw, 4rem);
  --nav-h:     72px;
  --radius:    4px;

  /* Motion */
  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-sine: cubic-bezier(0.37, 0, 0.63, 1);
  --t-slow:    0.9s;
  --t-base:    0.5s;
}

/* ----------------------------------------------------------------
   1. RESET
---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--c-ivory);
  color: var(--c-charcoal);
  font-family: var(--f-mincho);
  font-weight: 500;
  line-height: 1.9;
  word-break: keep-all;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

img, video { display: block; max-width: 100%; height: auto; }
a   { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { background: none; border: none; cursor: pointer; font: inherit; }
em { font-style: normal; }

/* ----------------------------------------------------------------
   2. LAYOUT
---------------------------------------------------------------- */
.wrap        { max-width: var(--wrap);      margin-inline: auto; padding-inline: var(--wrap-px); }
.wrap--wide  { max-width: var(--wrap-wide); margin-inline: auto; padding-inline: var(--wrap-px); }
.wrap--narrow{ max-width: 760px;            margin-inline: auto; padding-inline: var(--wrap-px); }

/* アンカーリンク時にナビで隠れないよう全セクションに余白 */
section { scroll-margin-top: var(--nav-h); }

/* ----------------------------------------------------------------
   3. TYPOGRAPHY
---------------------------------------------------------------- */
h1, h2, h3, h4 {
  text-wrap: balance;
  word-break: keep-all;
  overflow-wrap: break-word;
  font-weight: 500;
}
p { word-break: keep-all; overflow-wrap: break-word; }

/* Eyebrow label */
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.8rem;
  font-family: var(--f-ui); font-size: 0.62rem; font-weight: 500;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--c-red);
}
.eyebrow::before {
  content: ''; width: 1.8rem; height: 1px;
  background: var(--c-red); flex-shrink: 0;
}
.eyebrow--center {
  display: flex; justify-content: center;
}

/* ----------------------------------------------------------------
   4. BUTTONS
---------------------------------------------------------------- */
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--f-ui); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.08em;
  background: var(--c-red); color: #fff;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius);
  transition: background var(--t-base), gap var(--t-base), transform var(--t-base);
}
.btn-primary:hover {
  background: #c43526;
  gap: 0.9rem;
  transform: translateY(-2px);
}

.btn-text {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--f-ui); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-ash);
  transition: color var(--t-base), gap var(--t-base);
}
.btn-text:hover { color: var(--c-charcoal); gap: 0.9rem; }

/* ----------------------------------------------------------------
   5. SCROLL REVEAL
---------------------------------------------------------------- */
.reveal-up, .reveal-fade {
  opacity: 0;
  transition: opacity var(--t-slow) var(--ease-out),
              transform var(--t-slow) var(--ease-out);
}
.reveal-up   { transform: translateY(28px); }
.reveal-fade { transform: none; }
.reveal-up.is-visible, .reveal-fade.is-visible { opacity: 1; transform: none; }

/* ----------------------------------------------------------------
   8. NAVIGATION
   ★ z-index:1000 で固定
   ★ スクロール前は背景透明、スクロール後にアイボリー半透明
---------------------------------------------------------------- */
.nav {
  position: fixed; top: 0; left: 0;
  width: 100%; height: var(--nav-h);
  z-index: 1000;
  background: transparent;               /* スクロール前は透明 */
  border-bottom: 1px solid transparent;
  transition: background var(--t-base), border-color var(--t-base), box-shadow var(--t-base);
}
.nav.is-scrolled {
  background: rgba(245,241,235,0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--c-border-lt);
  box-shadow: 0 1px 12px rgba(26,25,22,0.06);
}

.nav__inner {
  max-width: var(--wrap-wide); margin-inline: auto;
  padding-inline: var(--wrap-px); height: 100%;
  display: flex; align-items: center; justify-content: space-between;
}

.nav__logo-img {
  height: 32px; width: auto;
  /* カラーロゴのため filter 削除 */
  transition: opacity var(--t-base);
}
.nav__logo-img:hover { opacity: 0.6; }

.nav__links { display: flex; align-items: center; gap: var(--s5); }
.nav__links a {
  font-family: var(--f-ui); font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--c-ash);
  transition: color var(--t-base); position: relative;
}
.nav__links a::after {
  content: ''; position: absolute; bottom: -3px; left: 0;
  width: 0; height: 1px; background: var(--c-red);
  transition: width var(--t-slow) var(--ease-out);
}
.nav__links a:hover,
.nav__links a.is-active { color: var(--c-charcoal); }
.nav__links a:hover::after,
.nav__links a.is-active::after { width: 100%; }

/* ドロップダウン */
.nav__dropdown { position: relative; }
.nav__dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 0;
  min-width: 140px;
  padding: 0.6rem 0;
  margin-top: 0.75rem;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border: 1px solid var(--c-border-lt);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(26,25,22,0.08);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}
.nav__dropdown:hover .nav__dropdown-menu {
  opacity: 1;
  visibility: visible;
}
.nav__dropdown-menu a {
  display: block;
  padding: 0.45rem 1.2rem;
  font-size: 0.62rem !important;
  letter-spacing: 0.18em;
  white-space: nowrap;
}
.nav__dropdown-menu a::after { display: none !important; }
.nav__dropdown-menu a:hover {
  color: var(--c-red) !important;
  background: rgba(222,63,44,0.04);
}

/* モバイルサブリンク */
.mobile-link--sub {
  padding-left: 1.5rem !important;
  font-size: 0.85em;
  opacity: 0.7;
}

.nav__contact {
  color: #fff !important;
  background: var(--c-red);
  border: 1px solid var(--c-red) !important;
  border-radius: var(--radius); padding: 0.4rem 1.1rem;
  font-weight: 500;
  transition: background var(--t-base) !important,
              border-color var(--t-base) !important,
              transform var(--t-base) !important,
              box-shadow var(--t-base) !important;
  box-shadow: 0 3px 12px rgba(222,63,44,0.28);
}
.nav__contact:hover {
  background: #c43420 !important;
  border-color: #c43420 !important;
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(222,63,44,0.38);
}
.nav__contact::after { display: none !important; }

.nav__hamburger {
  display: none; flex-direction: column; justify-content: space-between;
  width: 24px; height: 16px; padding: 0;
}
.nav__hamburger span {
  display: block; width: 100%; height: 1px;
  background: var(--c-charcoal);
  transition: transform var(--t-base), opacity var(--t-base);
}
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.nav__mobile {
  position: fixed; top: var(--nav-h); left: 0; right: 0;
  background: rgba(245,241,235,0.98);
  backdrop-filter: blur(20px);
  padding: var(--s5) var(--wrap-px);
  display: flex; flex-direction: column; gap: var(--s3);
  transform: translateY(-110%);
  visibility: hidden;                              /* 完全に非表示 */
  transition: transform var(--t-slow) var(--ease-out),
              visibility 0s var(--t-slow);         /* 閉じる時は transform 後に hidden */
  border-bottom: 1px solid var(--c-border);
  z-index: 999;
}
.nav__mobile.is-open {
  transform: translateY(0);
  visibility: visible;                             /* 開く時は即座に visible */
  transition: transform var(--t-slow) var(--ease-out),
              visibility 0s 0s;
}
.mobile-link {
  font-family: var(--f-ui); font-size: 0.8rem; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--c-ash); padding-block: 0.5rem;
  transition: color var(--t-base);
}
.mobile-link:hover { color: var(--c-charcoal); }

/* ----------------------------------------------------------------
   §1  HERO
   ★ z-index は設定しない（ナビに干渉させない）
   ★ isolation:isolate で内部 z-index を封じ込める
---------------------------------------------------------------- */
.hero {
  position: relative;
  isolation: isolate;          /* ← 内部 z-index がナビへ漏れない */
  width: 100%;
  height: 100svh; min-height: 640px;
  background: var(--c-ivory);
  overflow: hidden;
  display: flex; align-items: center;
  /* ロゴバンド分の下部スペース（Bバージョン） */
  padding-bottom: clamp(4.5rem, 8vw, 6.5rem);
}

/* スライダー（2列横スクロール） */
.hero__slider {
  position: absolute; inset: 0;
  z-index: 1;
  display: flex; flex-direction: column;
  gap: 12px; overflow: clip; justify-content: center;
}
.hero__slider-row { display: flex; gap: 12px; flex-shrink: 0; }
.hero__slider-row--1 { animation: slideLeft 34s linear infinite; }
.hero__slider-row--2 { animation: slideLeft 44s linear infinite reverse; }

@keyframes slideLeft {
  from { transform: translateX(0); }
  to   { transform: translateX(-33.333%); }
}

.hero__slide-card {
  flex-shrink: 0;
  width: 300px;
  height: calc(50svh - 16px);
  min-height: 280px; max-height: 460px;
  border-radius: 8px;
  overflow: hidden;
  background: #ddd9d4;
}
.hero__slide-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 8px;
  opacity: 0.82;
}

/* オーバーレイ */
.hero__overlay {
  position: absolute; inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(
    105deg,
    rgba(245,241,235,0.92) 0%,
    rgba(245,241,235,0.72) 38%,
    rgba(245,241,235,0.22) 68%,
    rgba(245,241,235,0.04) 100%
  );
}

/* 右下の呼吸アニメーション */
.hero__breath {
  position: absolute; bottom: -16vw; right: -16vw;
  width: 60vw; height: 60vw;
  max-width: 720px; max-height: 720px;
  z-index: 3;
  pointer-events: none;
  display: flex; align-items: center; justify-content: center;
}
.hero__breath-ring {
  position: absolute; border-radius: 50%;
  animation: breathe 18s var(--ease-sine) infinite;
}
.hero__breath-ring--5 { width:100%;height:100%; background: radial-gradient(circle, rgba(251,204,0,0.06) 0%, transparent 62%); animation-delay:0s; }
.hero__breath-ring--4 { width:78%;height:78%;   background: radial-gradient(circle, rgba(251,204,0,0.07) 0%, rgba(240,138,20,0.04) 50%, transparent 68%); animation-delay:-4s; }
.hero__breath-ring--3 { width:58%;height:58%;   background: radial-gradient(circle, rgba(240,138,20,0.07) 0%, rgba(222,63,44,0.04) 55%, transparent 70%); animation-delay:-8s; }
.hero__breath-ring--2 { width:38%;height:38%;   background: radial-gradient(circle, rgba(222,63,44,0.09) 0%, rgba(240,138,20,0.03) 60%, transparent 66%); animation-delay:-12s; }
.hero__breath-ring--1 { width:20%;height:20%;   background: radial-gradient(circle, rgba(222,63,44,0.14) 0%, transparent 70%); animation-delay:-15s; }
@keyframes breathe { 0%,100% { transform: scale(0.82); } 50% { transform: scale(1.18); } }

/* コピー */
.hero__stage {
  position: relative;
  z-index: 4;
  width: 100%; max-width: var(--wrap-wide);
  margin-inline: auto; padding-inline: clamp(1.5rem, 5vw, 4rem);
  padding-top: var(--nav-h);
}
.hero__stage-inner { max-width: 720px; }

.hero__label {
  display: inline-flex; align-items: center; gap: 0.8rem;
  font-family: var(--f-ui); font-size: clamp(0.58rem, 0.8vw, 0.68rem);
  font-weight: 500; letter-spacing: 0.35em; text-transform: uppercase;
  color: var(--c-red); margin-bottom: var(--s4);
}
.hero__label::before {
  content: ''; width: 1.4rem; height: 1px;
  background: var(--c-red); flex-shrink: 0;
}

/* h1・catch を同一サイズ・同一フォントで統一 */
.hero__headline {
  font-family: var(--f-display);
  font-size: clamp(2.0rem, 4.0vw, 4.4rem);
  font-weight: 400; line-height: 1.25; letter-spacing: -0.01em;
  color: var(--c-charcoal);
  margin-bottom: calc(var(--s5) / 3);
  white-space: normal; word-break: keep-all; overflow-wrap: break-word;
}
.hero__line1,
.hero__line2,
.hero__line3 {
  display: block;
  white-space: nowrap;
}
.hero__line3 {
  color: var(--c-red);
}
.hero__red { color: var(--c-red); }

/* ポジショニング一文（Bバージョン追加） */
.hero__positioning {
  font-family: var(--f-sans);
  font-size: clamp(1.08rem, 1.55vw, 1.23rem);
  font-weight: 500; line-height: 1.9; letter-spacing: 0.05em;
  color: var(--c-charcoal);
  opacity: 0.85;
  text-shadow: 0 0 20px rgba(245,241,235,0.9);
  margin-bottom: var(--s3);
  padding: 0.5rem 1rem 0.5rem 0.9rem;
  border-left: 2px solid var(--c-red);
  word-break: keep-all; overflow-wrap: break-word;
}

.hero__sub {
  font-family: var(--f-mincho);
  font-size: clamp(0.88rem, 1.3vw, 1rem);
  font-weight: 500; line-height: 2.2; letter-spacing: 0.04em;
  /* 背景に同化しないよう濃い炭色 */
  color: var(--c-charcoal);
  opacity: 0.9;
  text-shadow: 0 0 20px rgba(245,241,235,0.6);
  max-width: 30em; margin-bottom: var(--s6);
  word-break: keep-all; overflow-wrap: break-word;
}

.hero__cta { display: flex; align-items: center; gap: var(--s4); flex-wrap: wrap; }

/* RED×GOLDグラデーションボタン（塗りつぶし版） */
.btn-dawn--fill {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--f-ui); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.1em;
  background: linear-gradient(105deg, #DE3F2C 0%, #E8701A 50%, #C8991A 100%);
  color: #fff;
  padding: 0.9rem 2rem;
  border-radius: 2px;
  position: relative;
  transition: opacity var(--t-base), gap var(--t-base), box-shadow var(--t-base);
  box-shadow: 0 4px 20px rgba(222,63,44,0.28);
}
.btn-dawn--fill i { color: rgba(255,255,255,0.85); }
.btn-dawn--fill:hover {
  opacity: 0.88; gap: 0.9rem;
  box-shadow: 0 6px 28px rgba(222,63,44,0.40);
}
/* アウトライン版（汎用） */
.btn-dawn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--f-ui); font-size: 0.78rem; font-weight: 500;
  letter-spacing: 0.08em;
  background: linear-gradient(105deg, #DE3F2C 0%, #E8701A 50%, #C8991A 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  border: 1px solid;
  border-image: linear-gradient(105deg, #DE3F2C, #C8991A) 1;
  padding: 0.85rem 1.8rem;
  position: relative;
  transition: opacity var(--t-base), gap var(--t-base);
}
.btn-dawn i {
  -webkit-text-fill-color: var(--dawn-mid);
  color: var(--dawn-mid);
}
.btn-dawn:hover { opacity: 0.78; gap: 0.9rem; }

.hero__scroll {
  position: absolute; bottom: 2.5rem; left: var(--wrap-px);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  z-index: 4;
}
.hero__scroll-track {
  display: block; width: 1px; height: 48px;
  background: linear-gradient(to bottom, transparent, var(--c-border));
  animation: trackDrop 2.4s ease-in-out infinite;
}
.hero__scroll-word {
  font-family: var(--f-ui); font-size: 0.52rem;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--c-ash-lt); writing-mode: vertical-rl;
}
@keyframes trackDrop {
  0%   { transform: scaleY(0); transform-origin: top;    opacity: 0; }
  45%  { transform: scaleY(1); transform-origin: top;    opacity: 1; }
  55%  { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ----------------------------------------------------------------
   §2  CONCEPT — 1カラム中央寄せ・タイプライター
---------------------------------------------------------------- */
.concept {
  padding-block: clamp(8rem, 16vw, 14rem);
  padding-bottom: clamp(2rem, 4vw, 3.5rem);
  background: var(--c-ivory);
  /* border-top は削除 → グレー線なし */
}

/* eyebrow + headline ブロック */
.concept__header {
  text-align: center;
  margin-bottom: clamp(3.5rem, 7vw, 6rem);
}
/* eyebrow はデフォルト 0.62rem のまま小さく */
.concept__header .eyebrow {
  font-size: 0.62rem;
}
/* 赤背景ハイライト共通 */
.hl-red-bg {
  background: var(--c-red);
  color: #fff;
  padding: 0.05em 0.25em;
  border-radius: 2px;
  display: inline;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.concept__headline {
  font-family: var(--f-display);
  /* 他セクション大見出しと統一 */
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 400; line-height: 1.5;
  color: var(--c-charcoal);
  margin-top: var(--s4);
  text-wrap: balance; word-break: keep-all;
}

/* 本文ブロック */
.concept__body {
  display: flex; flex-direction: column;
  align-items: center;
  text-align: center;
  /* gap は小さめに統一 — 段落ブレイクは margin-top で制御 */
  gap: clamp(1.2rem, 2vw, 1.6rem);
}

/* 各行 — 初期は不可視、フェードアップで表示 */
.concept__line {
  font-family: var(--f-mincho);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  font-weight: 500; line-height: 2.0;
  color: var(--c-charcoal);
  /* 長文対応: nowrap を废止し、読みやすい幅で折り返す */
  white-space: normal;
  max-width: 36em;
  text-align: center;
  word-break: keep-all;
  opacity: 0;
  min-height: 1.5em;
}
/* 段落の区切り: 3行目・4行目・5行目の前に空白 */
.concept__line:nth-child(3),
.concept__line:nth-child(5) {
  margin-top: clamp(1.8rem, 3vw, 2.5rem);
}
.concept__line--lead {
  /* leadも本文と同サイズで統一 */
  font-family: var(--f-mincho);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  font-weight: 500; line-height: 2.0;
  color: var(--c-charcoal);
}
.concept__line--accent {
  font-family: var(--f-display);
  /* アクセント行だけ少し大きく — ただし本文の1.4倍程度まで */
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 400; line-height: 1.3;
  color: var(--c-red);
  margin-top: clamp(1.8rem, 3vw, 2.5rem);
}

/* ふわっと出現（フェードアップ） */
.concept__line {
  transition: opacity 0.9s cubic-bezier(0.16,1,0.3,1),
              transform 0.9s cubic-bezier(0.16,1,0.3,1);
  transform: translateY(16px);
}
.concept__line.is-typed {
  opacity: 1;
  transform: translateY(0);
}

/* ----------------------------------------------------------------
   §1.5  LOGO SLIDER  (Partners & Clients)
---------------------------------------------------------------- */
.logo-slider {
  background: var(--c-red);
  padding-block: clamp(1.6rem, 3vw, 2.4rem);
  border-top: none;
  border-bottom: none;
  overflow: hidden;
}

.logo-slider__label {
  text-align: center;
  font-family: var(--f-sans);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  margin-bottom: clamp(0.8rem, 2vw, 1.4rem);
}

.logo-slider__outer {
  overflow: hidden;
  /* 両端フェード */
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%,
    #000 10%,
    #000 90%,
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0%,
    #000 10%,
    #000 90%,
    transparent 100%
  );
}

.logo-slider__track {
  display: flex;
  align-items: center;
  gap: clamp(2.5rem, 5vw, 5rem);
  width: max-content;
  animation: logoScroll 28s linear infinite;
  will-change: transform;
}

.logo-slider:hover .logo-slider__track {
  animation-play-state: paused;
}

@keyframes logoScroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.logo-slider__item {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 44px;
}

.logo-slider__item img {
  height: 100%;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  /* 赤背景上で白く統一 */
  filter: brightness(0) invert(1) opacity(0.85);
  transition: filter 0.3s ease;
}

.logo-slider__item:hover img {
  filter: brightness(0) invert(1) opacity(1);
}

/* ----------------------------------------------------------------
   HERO LOGO BAND — FVに食い込むパートナーロゴ帯（Bバージョン追加）
---------------------------------------------------------------- */
.hero__logo-band {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  z-index: 5;
  background: #fff;
  padding-block: clamp(0.9rem, 1.8vw, 1.4rem);
  overflow: hidden;
  border-top: 1px solid var(--c-border);
}

.hero__logo-band-label {
  text-align: center;
  font-family: var(--f-sans);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-ash);
  margin-bottom: clamp(0.5rem, 1.2vw, 0.9rem);
}

.hero__logo-band-outer {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%, #000 10%, #000 90%, transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0%, #000 10%, #000 90%, transparent 100%
  );
}

.hero__logo-band-track {
  display: flex;
  align-items: center;
  gap: clamp(2.5rem, 5vw, 5rem);
  width: max-content;
  animation: logoScroll 28s linear infinite;
  will-change: transform;
}

.hero__logo-band:hover .hero__logo-band-track {
  animation-play-state: paused;
}

.hero__logo-band-item {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  width: 140px;
}

.hero__logo-band-item img {
  max-height: 100%;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  mix-blend-mode: multiply;
}
.hero__logo-band-item img[alt="成美学園グループ"] {
  transform: scale(1.6);
}

/* ----------------------------------------------------------------
   §2.5  MEMBERS SLIDER
---------------------------------------------------------------- */
.members-slider {
  overflow: hidden;
  background: var(--c-ivory);
  padding-block: clamp(1.2rem, 2.5vw, 2rem);
  border-top: none;
}

.members-slider__track-wrap {
  overflow: hidden;
  /* 左右に向けてフェードアウト */
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%,
    #000 8%,
    #000 92%,
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0%,
    #000 8%,
    #000 92%,
    transparent 100%
  );
}

.members-slider__track {
  display: flex;
  gap: clamp(1rem, 2vw, 1.5rem);
  width: max-content;
  animation: membersSlide 28s linear infinite;
}

/* ホバーで一時停止 */
.members-slider:hover .members-slider__track {
  animation-play-state: paused;
}

@keyframes membersSlide {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.members-slider__card {
  flex-shrink: 0;
  width: clamp(220px, 22vw, 300px);
  aspect-ratio: 3 / 4;
  border-radius: 6px;
  perspective: 800px;
}

.members-slider__flip {
  position: relative;
  width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.members-slider__card:hover .members-slider__flip {
  transform: rotateY(180deg);
}

.members-slider__front,
.members-slider__back {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  backface-visibility: hidden;
  border-radius: 6px;
}

.members-slider__back {
  transform: rotateY(180deg);
}

/* ----------------------------------------------------------------
   §3  STRUCTURE
   ★ isolation:isolate で同心円の z-index がナビへ漏れない
---------------------------------------------------------------- */
.structure {
  padding-block: clamp(7rem, 14vw, 12rem);
  background: var(--c-ivory-d);
  border-top: 1px solid var(--c-border);
  isolation: isolate;
}
.structure__layout {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(4rem, 8vw, 8rem); align-items: center;
}
.structure__headline {
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 400; line-height: 1.2;
  color: var(--c-charcoal); margin-block: var(--s4) var(--s4);
  text-wrap: balance;
}
.structure__body {
  font-family: var(--f-mincho);
  font-size: clamp(0.9rem, 1.3vw, 1rem);
  font-weight: 500; line-height: 2.2; letter-spacing: 0.04em;
  color: var(--c-ash); word-break: keep-all; margin-bottom: var(--s3);
}
.structure__body strong { color: var(--c-charcoal); font-weight: 600; }

.structure__caption-block {
  margin-top: var(--s5); padding-top: var(--s4);
  border-top: 1px solid var(--c-border);
  display: flex; gap: var(--s5);
}
.structure__cap-label {
  font-family: var(--f-ui); font-size: 0.58rem; font-weight: 500;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--c-red); display: block; margin-bottom: 0.3rem;
}
.structure__cap-text {
  font-family: var(--f-sans); font-size: 0.82rem;
  color: var(--c-ash); letter-spacing: 0.03em;
}

/* ----------------------------------------------------------------
   同心円ダイアグラム
   ★ JS は opacity のみ操作。transform には触れない。
   ★ アニメーションは純粋 CSS のみで制御。
---------------------------------------------------------------- */
.structure__diagram-wrap {
  display: flex; align-items: center; justify-content: center;
}
.structure__diagram {
  position: relative;
  width: min(460px, 100%);
  aspect-ratio: 1;
}

/*
  リング共通
  ・position:absolute / top:50% / left:50%
  ・margin-left と margin-top で width/height の半分だけ戻す方式
    → JS の transform 上書きに依存しない安全な中央配置
  ・animation の keyframes にも translate を含めて完全自己完結
*/
.structure__ring {
  position: absolute;
  border-radius: 50%;
  /* 中央配置: JS が transform に触れても崩れない */
  left: 50%; top: 50%;
}

/* サイズと中央補正を個別指定 */
.structure__ring--4 {
  width: 100%; height: 100%;
  margin-left: -50%; margin-top: -50%;
  border: 1.5px dashed rgba(251,204,0,0.70);
  background: radial-gradient(circle, transparent 55%, rgba(251,204,0,0.10) 80%, rgba(251,204,0,0.18) 100%);
  animation: ripple4 5s cubic-bezier(0.25,0.46,0.45,0.94) infinite;
  animation-delay: 1.5s;
}
.structure__ring--3 {
  width: 76%; height: 76%;
  margin-left: -38%; margin-top: -38%;
  border: 1px solid rgba(251,204,0,0.60);
  background: radial-gradient(circle, rgba(251,204,0,0.18) 0%, rgba(251,204,0,0.28) 65%, rgba(251,204,0,0.08) 100%);
  animation: ripple3 5s cubic-bezier(0.25,0.46,0.45,0.94) infinite;
  animation-delay: 1.0s;
}
.structure__ring--2 {
  width: 52%; height: 52%;
  margin-left: -26%; margin-top: -26%;
  border: 1px solid rgba(240,138,20,0.65);
  background: radial-gradient(circle, rgba(240,138,20,0.18) 0%, rgba(251,204,0,0.22) 60%, rgba(251,204,0,0.10) 100%);
  animation: ripple2 5s cubic-bezier(0.25,0.46,0.45,0.94) infinite;
  animation-delay: 0.5s;
}
.structure__ring--1 {
  width: 30%; height: 30%;
  margin-left: -15%; margin-top: -15%;
  border: 1.5px solid rgba(222,63,44,0.55);
  background: radial-gradient(circle, rgba(222,63,44,0.22) 0%, rgba(240,138,20,0.18) 60%, rgba(251,204,0,0.08) 100%);
  animation: ripple1 5s cubic-bezier(0.25,0.46,0.45,0.94) infinite;
  animation-delay: 0s;
}

/*
  ripple keyframes — 全て scale(1) を中心に小さく揺れる
  translate はなし（margin による中央配置を使うため不要）
*/
@keyframes ripple1 {
  0%,100% { transform: scale(1.00); }
  20%     { transform: scale(1.10); }
  50%     { transform: scale(0.96); }
  75%     { transform: scale(1.03); }
}
@keyframes ripple2 {
  0%,100% { transform: scale(1.00); }
  20%     { transform: scale(1.07); }
  50%     { transform: scale(0.97); }
  75%     { transform: scale(1.02); }
}
@keyframes ripple3 {
  0%,100% { transform: scale(1.00); }
  20%     { transform: scale(1.05); }
  50%     { transform: scale(0.98); }
  75%     { transform: scale(1.01); }
}
@keyframes ripple4 {
  0%,100% { transform: scale(1.00); }
  20%     { transform: scale(1.03); }
  50%     { transform: scale(0.99); }
  75%     { transform: scale(1.01); }
}

/* コア（人）— margin で中央配置、アニメなし */
.structure__core {
  position: absolute;
  left: 50%; top: 50%;
  width: 13%; height: 13%;
  margin-left: -6.5%; margin-top: -6.5%;
  border-radius: 50%;
  background: radial-gradient(circle, #DE3F2C 0%, #E85A28 60%, #F08A14 100%);
  display: flex; align-items: center; justify-content: center;
  z-index: 2;
  box-shadow:
    0 0 16px  rgba(222,63,44,0.40),
    0 0 40px  rgba(222,63,44,0.18),
    0 0 72px  rgba(251,204,0,0.12),
    0 0 120px rgba(251,204,0,0.06);
}
.structure__core-kanji {
  font-family: var(--f-mincho); font-size: clamp(0.5rem, 1.2vw, 0.65rem);
  font-weight: 500; color: #fff;
  text-shadow: 0 1px 4px rgba(0,0,0,0.25);
}

/* キャプション */
.structure__caption {
  position: absolute; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center;
  line-height: 1.1; pointer-events: none; white-space: nowrap;
  z-index: 3;
  opacity: 0; transition: opacity 0.7s var(--ease-out);
}
.structure__caption.is-shown { opacity: 1; }
.structure__caption--4 { top: 2%;  color: rgba(184,148,8,0.90); }
.structure__caption--3 { top:13%;  color: rgba(184,148,8,0.95); }
.structure__caption--2 { top:25%;  color: rgba(222,63,44,0.85); }
.structure__caption--1 { top:35%;  color: var(--c-red); }
.structure__caption-jp {
  font-family: var(--f-mincho); font-size: clamp(0.55rem, 1.1vw, 0.62rem);
  font-weight: 500; letter-spacing: 0.06em;
}
.structure__caption-en {
  font-family: var(--f-ui); font-size: clamp(0.4rem, 0.8vw, 0.46rem);
  font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; opacity: 0.65;
}

/* ----------------------------------------------------------------
   §4  APPROACH
---------------------------------------------------------------- */
.approach {
  padding-block: clamp(7rem, 14vw, 12rem);
  background: var(--c-ivory);
  border-top: 1px solid var(--c-border-lt);
}
.approach__header { margin-bottom: clamp(1.5rem, 3vw, 2.5rem); }
.approach__headline {
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 400; line-height: 1.2;
  color: var(--c-charcoal); margin-block: var(--s2) var(--s2);
  text-wrap: balance;
}

.approach__sub {
  font-size: clamp(0.9rem, 1.2vw, 1rem);
  font-weight: 500; line-height: 2.0;
  color: var(--c-ash); max-width: 42em;
}
.approach__grid {
  display: grid; grid-template-columns: repeat(2,1fr);
  gap: 1px; background: var(--c-border);
  border: 1px solid var(--c-border);
}
.approach__card {
  padding: clamp(2.5rem, 5vw, 4rem);
  background: var(--c-ivory);
  position: relative;
  overflow: hidden;
  transition: background var(--t-slow);
  cursor: default;
}
/* ホバー時の写真背景 */
.approach__card::before {
  content: '';
  position: absolute; inset: 0;
  background-image: var(--card-img);
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity var(--t-slow);
  z-index: 0;
}
/* 写真上の暗幕オーバーレイ */
.approach__card::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(26,25,22,0.72) 0%, rgba(26,25,22,0.55) 100%);
  opacity: 0;
  transition: opacity var(--t-slow);
  z-index: 1;
}
.approach__card:hover::before { opacity: 1; }
.approach__card:hover::after  { opacity: 1; }
/* カード内コンテンツをオーバーレイの前面に */
.approach__card > * { position: relative; z-index: 2; }
/* ホバー時にテキスト色を白に */
.approach__card:hover .approach__card-id    { color: rgba(251,204,0,0.9); }
.approach__card:hover .approach__card-value { color: #fff; }
.approach__card:hover .approach__card-title { color: rgba(255,255,255,0.5); }
.approach__card:hover .approach__card-copy  { color: rgba(255,255,255,0.8); }
.approach__card:hover .approach__card-link  { color: #fff; }

.approach__card-id {
  font-family: var(--f-ui); font-size: 0.58rem; font-weight: 500;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--c-red); display: block; margin-bottom: var(--s2);
  transition: color var(--t-slow);
}

/* 価値ベースのタグライン（らしさを届ける。など） — メインコピーとして最大化 */
.approach__card-value {
  font-family: var(--f-mincho) !important;
  font-size: clamp(1.75rem, 3.2vw, 2.6rem) !important;
  font-weight: 700 !important;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--c-charcoal);
  margin-bottom: var(--s2);
  transition: color var(--t-slow);
}
.approach__card:hover .approach__card-value {
  color: #fff;
}
.approach__card-title {
  font-family: var(--f-display);
  font-size: clamp(0.85rem, 1.2vw, 1rem) !important;
  font-weight: 400; line-height: 1.2;
  color: var(--c-ash); margin-bottom: var(--s3);
  transition: color var(--t-slow);
}
.approach__card-copy {
  font-size: clamp(0.88rem, 1.2vw, 0.95rem);
  font-weight: 500; line-height: 2.0;
  color: var(--c-ash); max-width: 26em; margin-bottom: var(--s4);
  transition: color var(--t-slow);
}
.approach__card-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--f-ui); font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--c-charcoal);
  transition: color var(--t-base), gap var(--t-base);
}
.approach__card-link:hover { color: var(--c-red); gap: 0.8rem; }

/* ----------------------------------------------------------------
   §5  IMPACT
---------------------------------------------------------------- */
.impact {
  padding-block: clamp(7rem, 14vw, 12rem);
  background: var(--c-ivory-d);
  border-top: 1px solid var(--c-border);
}
/* --- Impact: 左右スプリットレイアウト --- */
.impact__split {
  display: grid;
  grid-template-columns: 5fr 8fr;
  gap: clamp(3rem, 5vw, 5rem);
  align-items: start;
}
.impact__left {
  position: sticky;
  top: 6rem;
}
.impact__right {
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 3vw, 2rem);
}

/* --- Impact Card --- */
.impact__card {
  background: var(--c-red);
  color: #fff;
  border-radius: 10px;
  padding: clamp(1.5rem, 3vw, 2.2rem);
}
.impact__card-inner {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: clamp(1.2rem, 2vw, 2rem);
  align-items: start;
}
.impact__card-content { min-width: 0; }
.impact__card-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border-radius: 8px;
  padding: 0.8rem;
  aspect-ratio: 1;
}
.impact__card-logo img {
  max-width: 100%;
  max-height: 80px;
  object-fit: contain;
}
.impact__card-logo--photo {
  border-radius: 50%;
  overflow: hidden;
  padding: 0;
}
.impact__card-logo--photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-height: none;
}
.impact__card-content {
  display: flex;
  flex-direction: column;
  gap: clamp(1rem, 2vw, 1.6rem);
}
.impact__card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.impact__card-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.impact__card-metric {
  font-family: var(--f-ui);
  font-size: clamp(0.85rem, 1.1vw, 0.95rem);
  color: rgba(255,255,255,0.8);
  line-height: 1.4;
}
.impact__card-metric strong {
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 400;
  color: #fff;
  letter-spacing: -0.02em;
  margin-left: 0.15em;
}
.impact__card-company {
  font-family: var(--f-mincho);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
}
.impact__card-desc {
  font-family: var(--f-sans);
  font-size: clamp(0.82rem, 1.1vw, 0.92rem);
  line-height: 1.8;
  color: rgba(255,255,255,0.88);
}
.impact__card-desc strong {
  color: #fff;
  font-weight: 700;
}

/* Badge overrides for card context */
.impact__card .impact__card-badge {
  background: rgba(255,255,255,0.2);
  color: #fff;
}

.impact__header { margin-bottom: clamp(1.5rem, 3vw, 2.5rem); }

/* 数字先出しKPIブロック */
.impact__kpi {
  margin-bottom: var(--s3);
}
.impact__kpi-num {
  font-family: var(--f-display);
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  font-weight: 400;
  color: var(--c-ash);
  letter-spacing: 0.02em;
}
.impact__kpi-num em {
  font-style: normal;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  color: var(--c-red);
  margin-inline: 0.12em;
  line-height: 1;
}

/* IMPACTステートメント内CTAボタン */
.impact__statement-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: var(--s2);
  font-family: var(--f-ui);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: #fff;
  background: linear-gradient(105deg, #DE3F2C 0%, #E8701A 50%, #C8991A 100%);
  -webkit-background-clip: unset;
  background-clip: unset;
  -webkit-text-fill-color: #fff;
  padding: 0.9rem 2.4rem;
  border-radius: 3px;
  box-shadow: 0 4px 24px rgba(222,63,44,0.38);
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, gap 0.25s ease;
}
.impact__statement-cta:hover {
  transform: translateY(-2px);
  gap: 0.9rem;
  box-shadow: 0 8px 32px rgba(222,63,44,0.50);
}
.impact__statement-cta i {
  color: rgba(255,255,255,0.9);
}

/* Impact カテゴリ見出し */
.impact__category {
  font-family: var(--f-mincho);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  font-weight: 600;
  color: var(--c-charcoal);
  padding-left: 1rem;
  border-left: 3px solid var(--c-red);
  margin-bottom: var(--s4);
  margin-top: clamp(2rem, 4vw, 3rem);
}

/* Impact 実績一覧（1カラム・2カラム内構成） */
.impact__cases {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.impact__case {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: start;
  padding: clamp(2rem, 4vw, 3rem) 0;
  border-bottom: 1px solid var(--c-border-lt);
}
.impact__case:first-child {
  padding-top: 0;
}
.impact__case:last-child {
  border-bottom: none;
}
.impact__case-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 0.5rem;
}
.impact__case-logo img {
  max-width: 160px;
  max-height: 80px;
  object-fit: contain;
}
.impact__case-body {
  display: flex;
  flex-direction: column;
}
.impact__case-company {
  font-family: var(--f-mincho);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  font-weight: 600;
  color: var(--c-charcoal);
  margin-top: 0.6rem;
  margin-bottom: 0.8rem;
}
.impact__case-metric {
  font-family: var(--f-ui);
  font-size: clamp(0.85rem, 1.2vw, 0.95rem);
  color: var(--c-ash);
  margin-bottom: 1rem;
}
.impact__case-metric strong {
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 400;
  color: var(--c-charcoal);
  letter-spacing: -0.02em;
  display: inline;
  margin: 0 0.15em;
}
.impact__case-quote {
  font-family: var(--f-mincho);
  font-size: clamp(0.95rem, 1.3vw, 1.1rem);
  font-weight: 500;
  line-height: 1.9;
  color: var(--c-charcoal);
  margin: 0 0 0.8rem;
  padding: 0;
  border: none;
  font-style: normal;
}
.impact__case-detail {
  font-family: var(--f-sans);
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--c-ash);
}
.impact__card-badge {
  display: inline-block;
  font-family: var(--f-ui);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.3rem 0.8rem;
  border-radius: 3px;
  width: fit-content;
}
.impact__card-badge--marketing {
  background: var(--c-red);
  color: #fff;
}
.impact__card-badge--content {
  background: #2563EB;
  color: #fff;
}
.impact__card-badge--finance {
  background: var(--c-red);
  color: #fff;
}

.impact__headline {
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 400; line-height: 1.2;
  color: var(--c-charcoal); margin-block: var(--s4) var(--s3);
  text-wrap: balance;
}
.impact__sub {
  font-size: clamp(0.9rem, 1.3vw, 1rem);
  font-weight: 500; line-height: 2.0;
  color: var(--c-ash); max-width: 36em;
}
.impact__item {
  display: grid; grid-template-columns: 1fr 2fr;
  gap: clamp(2.5rem, 5vw, 5rem); padding-block: clamp(3rem, 6vw, 5rem);
  border-bottom: 1px solid var(--c-border);
}
.impact__item--rev { direction: rtl; }
.impact__item--rev > * { direction: ltr; }
/* IMPACT 写真: 実写真を img で表示、サイズ統一 */
.impact__photo {
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 4/3;
  align-self: start;
}
.impact__photo img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center top;
  display: block;
  transition: transform 0.7s var(--ease-out);
}
.impact__item:hover .impact__photo img { transform: scale(1.04); }
.impact__tag {
  display: inline-block;
  font-family: var(--f-ui); font-size: 0.58rem; font-weight: 500;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--c-red); margin-bottom: var(--s3);
  padding: 0.25rem 0.6rem;
  border: 1px solid rgba(222,63,44,0.3); border-radius: 2px;
}
.impact__tag--gold { color: var(--c-gold); border-color: rgba(184,144,10,0.3); }
.impact__title {
  font-family: var(--f-mincho);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  font-weight: 600; line-height: 1.7;
  color: var(--c-charcoal); margin-bottom: var(--s4);
}
.impact__ba {
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: var(--s3); align-items: start;
  padding: var(--s4);
  background: var(--c-ivory); border-radius: 6px;
  margin-bottom: var(--s4);
}
.impact__ba-label {
  font-family: var(--f-ui); font-size: 0.58rem; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--c-ash-lt); margin-bottom: 0.4rem;
}
.impact__ba-label--after { color: var(--c-red); }
.impact__ba-text {
  font-size: 0.88rem; font-weight: 500;
  line-height: 1.9; color: var(--c-ash);
}
.impact__ba-num { color: var(--c-red); font-weight: 700; font-size: 1.1em; }
.impact__ba-arrow { display: flex; align-items: center; padding-top: 1.4rem; }
.impact__ba-line {
  display: block; width: 24px; height: 1px;
  background: linear-gradient(to right, var(--c-border), var(--c-red));
}
.impact__conviction {
  font-family: var(--f-display); font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  font-weight: 400; line-height: 1.7; font-style: italic;
  color: var(--c-charcoal); margin-bottom: var(--s2);
  padding-left: var(--s3); border-left: 2px solid var(--c-red);
}
.impact__meta {
  font-family: var(--f-ui); font-size: 0.72rem;
  letter-spacing: 0.08em; color: var(--c-ash-lt);
}
/* IMPACT ステートメント（「この変化は...」インパクト表示） */
.impact__statement {
  text-align: center;
  padding-block: clamp(4rem, 8vw, 7rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s5);
}
.impact__statement-text {
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 4vw, 3.6rem);
  font-weight: 400;
  line-height: 1.45;
  color: var(--c-charcoal);
  letter-spacing: -0.01em;
  text-wrap: balance;
}
.impact__statement-line {
  display: block;
  width: 1px;
  height: 4rem;
  background: linear-gradient(to bottom, var(--c-red), transparent);
}

.impact__sep {
  display: flex; align-items: center; gap: var(--s3);
  padding-block: clamp(1.5rem, 3vw, 2.5rem);
}
.impact__sep-dot {
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--c-gold-br); flex-shrink: 0;
}
.impact__sep-line { flex: 1; height: 1px; background: var(--c-border-lt); }
.impact__microcopy {
  font-family: var(--f-mincho); font-size: clamp(0.88rem, 1.2vw, 0.95rem);
  font-weight: 500; line-height: 2; color: var(--c-ash);
  text-align: center; padding-block: var(--s5);
}
.impact__numbers {
  display: flex; align-items: center; justify-content: center;
  gap: var(--s5); padding-block: clamp(3rem, 6vw, 5rem);
  border-top: 1px solid var(--c-border);
}
.impact__num-item { text-align: center; }
.impact__num-value {
  display: block; font-family: var(--f-display);
  font-size: clamp(2.4rem, 5vw, 4rem); font-weight: 400;
  line-height: 1; color: var(--c-charcoal); margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}
.impact__num-label {
  font-family: var(--f-ui); font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.14em; color: var(--c-ash);
}
.impact__num-sep { width: 1px; height: 48px; background: var(--c-border); }

/* ----------------------------------------------------------------
   §6  CEO
---------------------------------------------------------------- */
.ceo {
  padding-block: clamp(7rem, 14vw, 12rem);
  background: var(--c-ivory);
  border-top: 1px solid var(--c-border-lt);
}
.ceo__layout {
  display: grid; grid-template-columns: 1fr 2fr;
  gap: clamp(4rem, 8vw, 8rem); align-items: start;
}
.ceo__photo-wrap {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
}
.ceo__photo { aspect-ratio: 3/4; border-radius: 6px; overflow: hidden; }
.ceo__photo-img { width: 100%; height: 100%; object-fit: cover; }
.ceo__photo-inner { width:100%; height:100%; background: linear-gradient(135deg, #ddd9d4 0%, #c8c3bb 100%); }
.ceo__content { padding-top: var(--s3); }
.ceo__quote {
  font-family: var(--f-display);
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 700; line-height: 1.4;
  color: var(--c-charcoal); margin-block: var(--s4) var(--s5);
  padding-left: var(--s4); border-left: 2px solid var(--c-red);
  text-wrap: balance;
}
.ceo__body {
  font-family: var(--f-mincho);
  font-size: clamp(0.9rem, 1.3vw, 1rem);
  font-weight: 500; line-height: 2.2;
  color: var(--c-charcoal); max-width: 26em; margin-bottom: var(--s4);
}
.ceo__meta { margin-bottom: var(--s4); }
.ceo__name {
  font-family: var(--f-display); font-size: 1.2rem;
  font-weight: 400; color: var(--c-charcoal);
}
.ceo__title {
  font-family: var(--f-ui); font-size: 0.7rem;
  letter-spacing: 0.1em; color: var(--c-ash-lt);
}
.ceo__link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--f-ui); font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--c-red);
  transition: gap var(--t-base);
}
.ceo__link:hover { gap: 0.8rem; }

/* ----------------------------------------------------------------
   §7  CTA
---------------------------------------------------------------- */
.cta {
  padding-block: clamp(3.5rem, 7vw, 5.5rem);
  position: relative;
  border-top: none;
  text-align: center;
  overflow: hidden;
  isolation: isolate;
}
/* 背景写真 */
.cta::before {
  content: '';
  position: absolute; inset: 0;
  background: url('../images/contact.jpg') center center / cover no-repeat;
  z-index: -2;
}
/* 暗幕オーバーレイ — テキスト可読性確保 */
.cta::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(
    160deg,
    rgba(26,25,22,0.78) 0%,
    rgba(26,25,22,0.68) 50%,
    rgba(26,25,22,0.74) 100%
  );
  z-index: -1;
}
.cta__headline {
  font-family: var(--f-display);
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 400; line-height: 1.2;
  color: #fff; margin-block: var(--s4) var(--s4);
}
.cta__line {
  display: block;
  white-space: nowrap;
}
.cta__sub {
  font-size: clamp(0.9rem, 1.3vw, 1rem);
  font-weight: 500; line-height: 2.1;
  color: rgba(255,255,255,0.72); max-width: 30em;
  margin-inline: auto; margin-bottom: var(--s6);
}
/* eyebrow も白に */
.cta .eyebrow { color: rgba(255,255,255,0.55); }
.cta__btns { display: flex; justify-content: center; }
/* btn-text も白に */
.cta .btn-text { color: rgba(255,255,255,0.65); }
.cta .btn-text:hover { color: #fff; }

/* ----------------------------------------------------------------
   FOOTER
---------------------------------------------------------------- */
.foot {
  background: var(--c-ivory-dd);
  border-top: 1px solid var(--c-border);
  padding-block: clamp(4rem, 8vw, 7rem) clamp(2rem, 4vw, 3rem);
}
.foot__top {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem); margin-bottom: var(--s7);
}
.foot__logo-img {
  height: 28px; width: auto;
  /* カラーロゴのため filter 削除 */
  margin-bottom: var(--s3);
}
.foot__tagline {
  font-family: var(--f-ui); font-size: 0.7rem;
  letter-spacing: 0.18em; color: var(--c-red);
  margin-bottom: var(--s2);
}
.foot__desc {
  font-size: 0.85rem; font-weight: 500;
  line-height: 2.0; color: var(--c-ash); max-width: 26em;
}
.foot__nav ul { display: flex; flex-direction: column; gap: var(--s2); }
.foot__nav a {
  font-family: var(--f-ui); font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--c-ash); transition: color var(--t-base);
}
.foot__nav a:hover { color: var(--c-charcoal); }
.foot__social-label {
  font-family: var(--f-ui); font-size: 0.6rem; font-weight: 500;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--c-ash-lt); margin-bottom: var(--s3);
}
.foot__social-icons { display: flex; gap: var(--s3); }
.foot__social-icons a {
  font-size: 1rem; color: var(--c-ash);
  transition: color var(--t-base);
}
.foot__social-icons a:hover { color: var(--c-charcoal); }
.foot__bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: var(--s4); border-top: 1px solid var(--c-border-lt);
  flex-wrap: wrap; gap: var(--s3);
}
.foot__copy {
  font-family: var(--f-ui); font-size: 0.7rem;
  color: var(--c-ash-lt); letter-spacing: 0.05em;
}
.foot__legal { display: flex; gap: var(--s4); }
.foot__legal a {
  font-family: var(--f-ui); font-size: 0.68rem;
  color: var(--c-ash-lt); transition: color var(--t-base);
}
.foot__legal a:hover { color: var(--c-ash); }

/* Back to top */
.btt {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-ivory-dd); border: 1px solid var(--c-border);
  color: var(--c-ash); font-size: 0.8rem;
  display: flex; align-items: center; justify-content: center;
  z-index: 800;
  opacity: 0; pointer-events: none;
  transition: opacity var(--t-base), transform var(--t-base), background var(--t-base), bottom var(--t-base);
}

/* float-CTAが表示中はBTTを上にずらして重ならないようにする */
.float-cta.is-visible ~ button.btt,
body:has(.float-cta.is-visible) .btt {
  bottom: 8rem;
}
.btt.is-visible { opacity: 1; pointer-events: auto; }
.btt:hover { background: var(--c-ivory); transform: translateY(-3px); }

/* ----------------------------------------------------------------
   FLOAT CTA（右下追随ボタン）
---------------------------------------------------------------- */
.float-cta {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 900;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.5s cubic-bezier(0.16,1,0.3,1),
              transform 0.5s cubic-bezier(0.16,1,0.3,1);
}

.float-cta.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Contactセクション内では非表示（重複を避ける） */
.float-cta.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.float-cta__btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.2rem 0.85rem 1rem;
  background: var(--c-red);
  color: #fff;
  border-radius: 3rem;
  text-decoration: none;
  box-shadow: 0 8px 32px rgba(222,63,44,0.38), 0 2px 8px rgba(0,0,0,0.15);
  transition: transform 0.25s cubic-bezier(0.16,1,0.3,1),
              box-shadow 0.25s ease,
              background 0.25s ease;
}

.float-cta__btn:hover {
  background: #c43420;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 40px rgba(222,63,44,0.45), 0 4px 12px rgba(0,0,0,0.18);
}

.float-cta__icon {
  font-size: 1.15rem;
  line-height: 1;
  flex-shrink: 0;
}

.float-cta__text {
  font-family: var(--f-mincho);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.03em;
}

.float-cta__arrow {
  font-size: 0.7rem;
  flex-shrink: 0;
  opacity: 0.8;
  transition: transform 0.25s ease;
}

.float-cta__btn:hover .float-cta__arrow {
  transform: translateX(3px);
  opacity: 1;
}

/* スマホ：少しコンパクトに */
@media (max-width: 480px) {
  .float-cta {
    bottom: 1.2rem;
    right: 1rem;
    left: 1rem;
  }
  .float-cta__btn {
    width: 100%;
    justify-content: center;
    border-radius: 2rem;
    padding: 0.9rem 1.2rem;
  }
  .float-cta__text {
    font-size: 0.75rem;
  }
}

/* ----------------------------------------------------------------
   RESPONSIVE
---------------------------------------------------------------- */
@media (max-width: 1024px) {
  .concept__layout  { grid-template-columns: 1fr; gap: var(--s6); }
  .concept__left    { position: static; }
  .structure__layout{ grid-template-columns: 1fr; gap: var(--s6); }
  .ceo__layout      { grid-template-columns: 1fr; gap: var(--s5); }
  .ceo__photo-wrap  { position: static; }
  .foot__top        { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
  .approach__grid { grid-template-columns: 1fr; }
  .structure__headline { white-space: normal; }
  .structure__body { word-break: normal; overflow-wrap: break-word; }
  .structure__caption-block { flex-direction: column; gap: var(--s3); }
  .structure__diagram { width: min(320px, 90vw); margin-inline: auto; }
  .approach__headline { line-height: 1.6; }
  .structure__headline { line-height: 1.6; }
  .impact__headline { line-height: 1.6; }
  .hl-red-bg { padding: 0.1em 0.25em; }
  .impact__split      { grid-template-columns: 1fr; }
  .impact__left       { position: static; margin-bottom: var(--s3); }
  .impact__card-inner { grid-template-columns: 1fr; }
  .impact__card-logo  { aspect-ratio: 1; width: 80px; height: 80px; max-width: none; padding: 0.6rem; border-radius: 8px; }
  .impact__card-logo--photo { border-radius: 8px; overflow: hidden; padding: 0; }
  .impact__card-logo--photo img { object-fit: cover; max-height: none; }
  .impact__case       { grid-template-columns: 1fr; }
  .impact__case-logo  { justify-content: flex-start; margin-bottom: 0.5rem; }
  .impact__item       { grid-template-columns: 1fr; }
  .impact__item--rev  { direction: ltr; }
  .impact__ba         { grid-template-columns: 1fr; }
  .impact__ba-arrow   { display: none; }
  .impact__numbers    { flex-direction: column; gap: var(--s5); }
  .impact__num-sep    { width: 40px; height: 1px; }
  .foot__top          { grid-template-columns: 1fr; }
  .foot__bottom       { flex-direction: column; text-align: center; }
  .foot__legal        { justify-content: center; }
  .hero__headline     { font-size: clamp(2.8rem, 10vw, 4.5rem); }
  .cta__btns          { flex-direction: column; align-items: center; }
  .cta__line           { white-space: normal; }
  .concept   { padding-block: clamp(3.5rem, 8vw, 5rem); }
  .structure { padding-block: clamp(3.5rem, 8vw, 5rem); }
  .approach  { padding-block: clamp(3.5rem, 8vw, 5rem); }
  .impact    { padding-block: clamp(3.5rem, 8vw, 5rem); }
  .ceo       { padding-block: clamp(3.5rem, 8vw, 5rem); }
  .ceo__photo { aspect-ratio: 16/9; border-radius: 6px; width: 100%; }
  .cta       { padding-block: clamp(2.5rem, 6vw, 4rem); }
}

@media (max-width: 480px) {
  .hero__slide-card { width: 180px; }
  .hero__headline { font-size: clamp(1.8rem, 8vw, 2.8rem); }
  .hero__positioning { font-size: clamp(0.82rem, 3.5vw, 0.95rem); }
  .hero__label { font-size: clamp(0.5rem, 2vw, 0.6rem); }
  .structure__diagram { width: min(280px, 85vw); }
  .concept__headline,
  .structure__headline,
  .approach__headline,
  .impact__headline { font-size: clamp(1.4rem, 5.5vw, 1.8rem); }
  .structure__caption-jp { font-size: 0.7rem; }
  .structure__caption-en { font-size: 0.5rem; }
  .approach__card-title { font-size: clamp(1.2rem, 5vw, 1.5rem); }
  .ceo__quote p { font-size: clamp(1rem, 4.5vw, 1.3rem); }
  .cta__headline { font-size: clamp(1.4rem, 6vw, 2rem); }
  .btt { bottom: 1.2rem; right: 1.2rem; }
}