/* ============================================================
   Happiness Advantage var 1.7 — home page styles
   全て body.home スコープ。他ページには影響しない。
   px ベースで記述（既存 html font-size 62.5%→52.5%→…の段階リセットの影響を受けないため）。
   ============================================================ */

/* ---------- Base on home ---------- */
body.home {
  font-family: var(--font-sans-jp);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* Reset for existing aggressive base styles in style.css (h2/h3/h4 had
   background colors, large padding, flex centering, etc.).
   We neutralize them inside body.home so home sections render clean. */
body.home h1,
body.home h2,
body.home h3,
body.home h4,
body.home h5,
body.home h6 {
  display: block;
  background: none;
  background-color: transparent;
  color: inherit;
  margin: 0;
  padding: 0;
  width: auto;
  max-width: none;
  border: none;
  font-weight: inherit;
  font-size: inherit;
  font-family: inherit;
  text-align: inherit;  /* 親の text-align を継承 (.cta 等の中央寄せに対応) */
  position: static;
  justify-content: initial;
}
body.home h3::before,
body.home h3::after,
body.home h2::before,
body.home h2::after,
body.home h4::before,
body.home h4::after {
  content: none;
  display: none;
}

body.home,
body.home .content,
body.home .content > p {
  background-image: none;
}

body.home .content {
  background-color: transparent;
  padding-bottom: 0;
}

body.home .content > p,
body.home .content > .is-layout-flex {
  width: auto;
  margin: 0;
}

body.home a {
  color: inherit;
  text-decoration: none;
}

/* 既存 .flont-img を完全に無効化（front-page.php 側で新マークアップに置換するが念のため） */
body.home .flont-img { display: none; }

/* レスポンシブ br 制御 */
body.home .sp-only { display: none; }
body.home .sp-hidden { display: inline; }
@media (max-width: 640px) {
  body.home .sp-only   { display: inline; }
  body.home .sp-hidden { display: none; }
}

/* スクロール用の右下ボタンは新デザインでは非表示（フェーズ2で再検討） */
body.home #scroll { display: none !important; }

/* ============================================================
   Header — body.home スコープで上書き
   ============================================================ */
body.home header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height-pc);
  padding: 0 clamp(20px, 4vw, 40px);
  background-color: transparent;
  transition: background-color .25s ease, backdrop-filter .25s ease, border-color .25s ease;
  border-bottom: 1px solid transparent;
}

body.home header.is-scrolled {
  background-color: rgba(250, 250, 247, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom-color: var(--color-border);
}

body.home header .logo {
  width: 168px;
  aspect-ratio: 1 / 0.2954;
  background-image: url(../img/logo.png);
  background-repeat: no-repeat;
  background-size: contain;
  background-position: left center;
  color: transparent;
  overflow: hidden;
  /* ヒーロー上に乗っている時は明度を上げる（白背景にロゴが映える） */
  filter: brightness(0) invert(1);
  transition: filter .25s ease;
}

body.home header.is-scrolled .logo {
  filter: none;
}

body.home header .logo h1 {
  font-size: 0;
  margin: 0;
  padding: 0;
}

/* PC ナビ */
body.home header .pc_menu ul {
  display: flex;
  gap: 32px;
  margin: 0;
  padding: 0;
}
body.home header .pc_menu li {
  font-family: var(--font-sans-jp);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
}
body.home header .pc_menu li a {
  color: rgba(255, 255, 255, 0.9);
  padding: 6px 2px;
  border-radius: 0;
  background: transparent !important;
  transition: color .2s ease, border-color .2s ease;
  border-bottom: 1px solid transparent;
}
body.home header.is-scrolled .pc_menu li a {
  color: var(--color-primary-900);
}
body.home header .pc_menu li a:hover {
  color: var(--color-accent) !important;
  background: transparent !important;
  border-bottom-color: var(--color-accent);
}
body.home header .pc_menu li:last-child a {
  background: transparent !important;
  color: rgba(255,255,255,0.95);
  padding: 6px 2px;
  border-radius: 0;
}
body.home header.is-scrolled .pc_menu li:last-child a {
  color: var(--color-primary-900);
}
body.home header .pc_menu .current_page_item a {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* SP ナビボタン: 表示・配置は base.css 任せ。home では透過ヘッダー時のみ色を反転 (白) */
body.home header:not(.is-scrolled) .navBtn {
  border-color: rgba(255,255,255,0.6);
}
body.home header:not(.is-scrolled) .navBtn span {
  background-color: #fff;
}

/* SP メニュー (オーバーレイ) のスタイルは base.css の汎用版を使用 (重複削除) */

/* ============================================================
   Hero
   ============================================================ */
body.home .hero {
  position: relative;
  width: 100%;
  min-height: clamp(560px, 80vh, 760px);
  background-color: var(--color-primary-900);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
  display: flex;
  align-items: center;
}

/* 微細な装飾レイヤー（インライン SVG はマークアップ側） */
body.home .hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
body.home .hero__bg svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* 微妙なビネット */
body.home .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(38, 90, 140, 0.45) 0%, transparent 60%),
    linear-gradient(180deg, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.25) 100%);
  z-index: 1;
  pointer-events: none;
}

body.home .hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: calc(var(--header-height-pc) + 48px) clamp(20px, 4vw, 40px) clamp(80px, 12vh, 120px);
  box-sizing: border-box;
}

body.home .hero__content {
  max-width: 720px;
}

body.home .hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-display-en);
  font-style: normal;
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: rgba(255,255,255,0.85);
  margin: 0 0 28px;
  text-transform: uppercase;
}
body.home .hero__eyebrow::before {
  content: "";
  display: inline-block;
  width: 40px;
  height: 1px;
  background-color: var(--color-accent);
}

body.home .hero__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 56px);
  line-height: 1.45;
  letter-spacing: 0.04em;
  color: #FAFAF7;
  margin: 0 0 28px;
  word-break: keep-all;
  overflow-wrap: break-word;
}

body.home .hero__lead {
  font-family: var(--font-sans-jp);
  font-weight: 400;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: rgba(255,255,255,0.82);
  margin: 0 0 40px;
  max-width: 600px;
}

body.home .hero__ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

body.home .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 28px;
  font-family: var(--font-sans-jp);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
  white-space: nowrap;
}
body.home .btn--primary {
  background-color: var(--color-accent);
  color: var(--color-primary-900);
  border-color: var(--color-accent);
}
body.home .btn--primary:hover {
  background-color: #C9A572;
  border-color: #C9A572;
}
body.home .btn--secondary {
  background-color: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}
body.home .btn--secondary:hover {
  background-color: rgba(255,255,255,0.08);
  border-color: #fff;
}

/* "Est." 右下 */
body.home .hero__est {
  position: absolute;
  right: clamp(20px, 4vw, 40px);
  bottom: clamp(20px, 4vh, 40px);
  font-family: var(--font-display-en);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.55);
  z-index: 2;
  margin: 0;
}

@media (max-width: 640px) {
  body.home .hero {
    min-height: 92vh;
  }
  body.home .hero__inner {
    padding: calc(var(--header-height-sp) + 32px) 20px 96px;
  }
  body.home .hero__eyebrow {
    font-size: 11px;
    letter-spacing: 0.16em;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
  }
  body.home .hero__eyebrow::before { width: 28px; }
  body.home .hero__title {
    font-size: 26px;       /* min from clamp(28..56) を下げて「る」単独行を防止 */
    letter-spacing: 0.02em;
    margin-bottom: 24px;
  }
  body.home .hero__lead { max-width: 100%; font-size: 14px; }
  body.home .btn { width: 100%; height: 48px; padding: 0 20px; }
  body.home .hero__ctas { flex-direction: column; gap: 12px; }
  body.home .hero__est { font-size: 12px; }
}

/* ============================================================
   セクション間用ユーティリティ（フェーズ1骨格）
   ============================================================ */
body.home .home-section {
  padding: var(--section-gap) clamp(20px, 4vw, 40px);
}
body.home .home-section--alt {
  background-color: var(--color-bg-alt);
}
body.home .home-section--dark {
  background-color: var(--color-primary-900);
  color: #fff;
}
body.home .home-section__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}
body.home .home-section__inner--narrow {
  max-width: var(--container-narrow);
}
body.home .home-section__label {
  font-family: var(--font-display-en);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-primary-700);
  margin: 0 0 24px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
body.home .home-section__label::before {
  content: "";
  display: inline-block;
  width: 36px;
  height: 1px;
  background-color: var(--color-accent);
}
body.home .home-section--dark .home-section__label {
  color: rgba(255,255,255,0.7);
}

/* ============================================================
   Mission / Intro
   ============================================================ */
body.home .mission {
  padding: clamp(80px, 11vw, 140px) clamp(20px, 4vw, 40px);
  text-align: left;
}
body.home .mission__inner {
  max-width: var(--container-narrow);
  margin: 0 auto;
}
body.home .mission__statement {
  font-family: var(--font-serif-jp);
  font-weight: 600;
  font-size: clamp(22px, 2.6vw, 34px);
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: var(--color-primary-900);
  margin: 0 0 32px;
  word-break: keep-all;
}
body.home .mission__body {
  font-family: var(--font-sans-jp);
  font-size: 15px;
  line-height: 2.0;
  color: var(--color-text);
  margin: 0;
  max-width: 640px;
}

/* ============================================================
   Pillars (3つの柱)
   ============================================================ */
body.home .pillars {
  background-color: var(--color-bg-alt);
  padding: var(--section-gap) clamp(20px, 4vw, 40px);
}
body.home .pillars__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}
body.home .pillars__head {
  margin-bottom: clamp(40px, 5vw, 64px);
  max-width: 760px;
}
body.home .pillars__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(24px, 2.8vw, 36px);
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--color-primary-900);
  margin: 0;
}
body.home .pillars__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
body.home .pillar {
  padding: 8px clamp(20px, 3vw, 36px);
  border-left: 1px solid var(--color-border);
}
body.home .pillar:first-child { border-left: none; padding-left: 0; }
body.home .pillar:last-child { padding-right: 0; }
body.home .pillar__icon {
  width: 56px;
  height: 56px;
  margin-bottom: 24px;
  color: var(--color-primary-700);
}
body.home .pillar__icon svg {
  display: block;
  width: 100%;
  height: 100%;
}
body.home .pillar__number {
  font-family: var(--font-display-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--color-primary-500);
  margin: 0 0 12px;
}
body.home .pillar__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--color-primary-900);
  margin: 0 0 14px;
}
body.home .pillar__body {
  font-family: var(--font-sans-jp);
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-text);
  margin: 0;
}

@media (max-width: 960px) {
  body.home .pillars__grid { grid-template-columns: 1fr; }
  body.home .pillar {
    border-left: none;
    padding: 28px 0;
    border-top: 1px solid var(--color-border);
  }
  body.home .pillar:first-child { padding-top: 0; border-top: none; }
}

/* ============================================================
   Programs (研究プログラム)
   ============================================================ */
body.home .programs {
  padding: var(--section-gap) clamp(20px, 4vw, 40px);
}
body.home .programs__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}
body.home .programs__head {
  margin-bottom: clamp(40px, 5vw, 56px);
  max-width: 760px;
}
body.home .programs__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(24px, 2.8vw, 36px);
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--color-primary-900);
  margin: 0 0 12px;
}
body.home .programs__lead {
  font-family: var(--font-sans-jp);
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text-muted);
  margin: 0;
}
body.home .programs__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
body.home .program {
  display: grid;
  grid-template-columns: 40% 1fr;
  gap: 0;
  align-items: stretch;
  border-top: 1px solid var(--color-border);
}
body.home .program:last-child {
  border-bottom: 1px solid var(--color-border);
}
body.home .program__index {
  background-color: var(--color-primary-100);
  padding: clamp(36px, 4vw, 56px) clamp(28px, 3vw, 40px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
body.home .program__number {
  font-family: var(--font-display-en);
  font-weight: 600;
  font-size: clamp(48px, 6vw, 80px);
  line-height: 1;
  color: var(--color-primary-900);
  margin: 0 0 12px;
  letter-spacing: 0.02em;
}
body.home .program__label {
  font-family: var(--font-display-en);
  font-style: italic;
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--color-primary-700);
  margin: 0;
}
body.home .program__body {
  padding: clamp(32px, 4vw, 52px) 0 clamp(32px, 4vw, 52px) clamp(28px, 4vw, 56px);
}
body.home .program__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.55;
  letter-spacing: 0.04em;
  color: var(--color-primary-900);
  margin: 0 0 14px;
}
body.home .program__desc {
  font-family: var(--font-sans-jp);
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--color-text);
  margin: 0 0 22px;
  max-width: 560px;
}
body.home .program__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans-jp);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-primary-700);
  transition: color .2s ease, gap .2s ease;
}
body.home .program__link::after {
  content: "→";
  display: inline-block;
  transition: transform .2s ease;
}
body.home .program__link:hover {
  color: var(--color-accent);
  gap: 14px;
}

@media (max-width: 768px) {
  body.home .program {
    grid-template-columns: 1fr;
  }
  body.home .program__index {
    padding: 28px 24px 24px;
    flex-direction: row;
    align-items: baseline;
    gap: 18px;
  }
  body.home .program__number { font-size: 44px; }
  body.home .program__body { padding: 24px 24px 36px; }
}

/* ============================================================
   Purpose (社団設立の趣旨)
   ============================================================ */
body.home .purpose {
  padding: var(--section-gap) clamp(20px, 4vw, 40px);
  background-color: var(--color-bg-alt);
}
body.home .purpose__inner {
  max-width: var(--container-narrow);
  margin: 0 auto;
}
body.home .purpose__head {
  margin: 0 0 clamp(48px, 6vw, 72px);
}
body.home .purpose__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: var(--color-primary-900);
  margin: 0 0 20px;
}
body.home .purpose__lead {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.7;
  letter-spacing: 0.08em;
  color: var(--color-primary-700);
  margin: 0;
  padding: 4px 0 4px 16px;
  border-left: 2px solid var(--color-accent);
}
body.home .purpose__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 880px;
  position: relative;
}
body.home .purpose__step {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 24px;
  padding: 28px 0;
  align-items: flex-start;
  border-top: 1px solid var(--color-border);
  position: relative;
}
body.home .purpose__step:last-child {
  border-bottom: 1px solid var(--color-border);
}
/* 縦の連結線 */
body.home .purpose__step::before {
  content: "";
  position: absolute;
  left: 28px;
  top: 56px;
  bottom: -28px;
  width: 1px;
  background-color: var(--color-primary-500);
  opacity: 0.3;
}
body.home .purpose__step:last-child::before { display: none; }
body.home .purpose__no {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border: 1px solid var(--color-primary-500);
  border-radius: 50%;
  font-family: var(--font-display-en);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--color-primary-700);
  background-color: var(--color-bg-alt);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}
body.home .purpose__text {
  font-family: var(--font-serif-jp);
  font-weight: 600;
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.9;
  letter-spacing: 0.03em;
  color: var(--color-text);
  margin: 12px 0;
}

@media (max-width: 640px) {
  body.home .purpose__step { grid-template-columns: 56px 1fr; gap: 18px; padding: 24px 0; }
  body.home .purpose__no { width: 48px; height: 48px; font-size: 12px; }
  body.home .purpose__step::before { left: 24px; top: 48px; }
  body.home .purpose__text { margin: 8px 0; }
}

/* ============================================================
   Principle (私たちの理念)
   ============================================================ */
body.home .principle {
  padding: var(--section-gap) clamp(20px, 4vw, 40px);
  background-color: var(--color-bg);
}
body.home .principle__inner {
  max-width: var(--container-narrow);
  margin: 0 auto;
}
body.home .principle__head {
  margin-bottom: clamp(32px, 4vw, 48px);
}
body.home .principle__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: var(--color-primary-900);
  margin: 0;
}
body.home .principle__body {
  max-width: 100%;
}
body.home .principle__keyword {
  display: inline-block;
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.4em;
  color: var(--color-primary-700);
  padding-bottom: 8px;
  margin: 0 0 24px;
  border-bottom: 1px solid var(--color-accent);
}
body.home .principle__statement {
  font-family: var(--font-serif-jp);
  font-weight: 500;
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 2.0;
  letter-spacing: 0.05em;
  color: var(--color-primary-900);
  margin: 0;
}


/* ============================================================
   Vision (組織文化の変革を通じて日本を変える) — DARK
   ============================================================ */
body.home .vision {
  position: relative;
  padding: var(--section-gap) clamp(20px, 4vw, 40px);
  background-color: var(--color-primary-900);
  color: rgba(255,255,255,0.88);
  overflow: hidden;
  isolation: isolate;
}
/* 境界の意図的な区切り — 中央寄りの金線 */
body.home .vision::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: clamp(120px, 14vw, 200px);
  height: 1px;
  background-color: var(--color-accent);
  z-index: 2;
}
body.home .vision__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.6;
  pointer-events: none;
}
body.home .vision__bg svg { width: 100%; height: 100%; display: block; }
body.home .vision__inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-narrow);
  margin: 0 auto;
}
body.home .vision__head {
  margin-bottom: clamp(48px, 6vw, 72px);
}
body.home .vision__head .home-section__label {
  color: rgba(255,255,255,0.7);
}
body.home .vision__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.55;
  letter-spacing: 0.05em;
  color: #FAFAF7;
  margin: 0;
}
body.home .vision__body p {
  font-family: var(--font-sans-jp);
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 2.1;
  letter-spacing: 0.03em;
  color: rgba(255,255,255,0.85);
  margin: 0 0 28px;
}
body.home .vision__compare {
  margin: 28px 0;
  padding: 32px;
  border-left: 2px solid var(--color-accent);
  background-color: rgba(255,255,255,0.04);
}
body.home .vision__compare p {
  margin: 0 0 12px;
}
body.home .vision__compare ul {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}
body.home .vision__compare ul:last-child { margin-bottom: 0; }
body.home .vision__compare li {
  font-family: var(--font-serif-jp);
  font-weight: 500;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.85;
  letter-spacing: 0.04em;
  color: #FAFAF7;
  padding: 8px 0 8px 20px;
  position: relative;
}
body.home .vision__compare li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 10px;
  height: 1px;
  background-color: var(--color-accent);
}
body.home .vision__close {
  font-family: var(--font-serif-jp) !important;
  font-weight: 600 !important;
  font-size: clamp(17px, 1.5vw, 20px) !important;
  line-height: 1.9 !important;
  letter-spacing: 0.04em !important;
  color: #FAFAF7 !important;
  margin: 32px 0 0 !important;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.18);
}

@media (max-width: 640px) {
  body.home .vision__compare { padding: 20px 18px; }
}

/* ============================================================
   Concerns (お困りごと — 1.6 文言)
   ============================================================ */
body.home .concerns {
  padding: var(--section-gap) clamp(20px, 4vw, 40px);
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
body.home .concerns__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}
body.home .concerns__head {
  margin-bottom: clamp(40px, 5vw, 56px);
  max-width: 880px;
}
body.home .concerns__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.55;
  letter-spacing: 0.06em;
  color: var(--color-primary-900);
  margin: 0;
}
body.home .concerns__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}
body.home .concern {
  display: flex;
  align-items: flex-start;
  gap: clamp(20px, 2.5vw, 32px);
  padding: clamp(28px, 3vw, 40px);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
body.home .concern__no {
  font-family: var(--font-display-en);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--color-primary-500);
  margin: 4px 0 0;
  white-space: nowrap;
  flex-shrink: 0;
}
body.home .concern__text {
  font-family: var(--font-serif-jp);
  font-weight: 600;
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.75;
  letter-spacing: 0.03em;
  color: var(--color-primary-900);
  margin: 0;
}
body.home .concerns__foot {
  margin-top: clamp(40px, 5vw, 56px);
  text-align: center;
}
body.home .concerns__bridge {
  display: inline-block;
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--color-primary-900);
  margin: 0;
  padding: 0 24px 16px;
  border-bottom: 1px solid var(--color-accent);
}

@media (max-width: 768px) {
  body.home .concerns__grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Chairman Message
   ============================================================ */
body.home .chairman {
  background-color: var(--color-primary-900);
  color: #fff;
  padding: var(--section-gap) clamp(20px, 4vw, 40px);
  position: relative;
  overflow: hidden;
}
body.home .chairman::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(transparent calc(100% - 1px), rgba(255,255,255,0.04) 100%),
    linear-gradient(90deg, transparent calc(100% - 1px), rgba(255,255,255,0.04) 100%);
  background-size: 48px 48px;
  pointer-events: none;
}
body.home .chairman__inner {
  position: relative;
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 38% 1fr;
  gap: clamp(40px, 6vw, 88px);
  align-items: center;
}
body.home .chairman__photo {
  position: relative;
}
body.home .chairman__photo img {
  display: block;
  width: 100%;
  height: auto;
  filter: grayscale(100%) contrast(1.05) brightness(0.95);
  border: 4px solid var(--color-bg);
  box-sizing: border-box;
}
body.home .chairman__photo::after {
  content: "";
  position: absolute;
  inset: 16px -16px -16px 16px;
  border: 1px solid var(--color-accent);
  z-index: -1;
  pointer-events: none;
}
body.home .chairman__content { max-width: 580px; }
body.home .chairman__label {
  font-family: var(--font-display-en);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  margin: 0 0 24px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
body.home .chairman__label::before {
  content: "";
  display: inline-block;
  width: 36px;
  height: 1px;
  background-color: var(--color-accent);
}
body.home .chairman__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1.65;
  letter-spacing: 0.04em;
  color: #FAFAF7;
  margin: 0 0 28px;
}
body.home .chairman__quote {
  font-family: var(--font-serif-jp);
  font-weight: 400;
  font-size: 15px;
  line-height: 2.05;
  letter-spacing: 0.03em;
  color: rgba(255,255,255,0.85);
  margin: 0 0 32px;
}
body.home .chairman__sig {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin: 0 0 28px;
  font-family: var(--font-sans-jp);
}
body.home .chairman__name {
  font-family: var(--font-serif-jp);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: #fff;
}
body.home .chairman__role {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.6);
}
body.home .chairman__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans-jp);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  transition: gap .2s ease, color .2s ease;
}
body.home .chairman__link::after { content: "→"; }
body.home .chairman__link:hover { gap: 14px; color: #D8B57E; }

@media (max-width: 768px) {
  body.home .chairman__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  body.home .chairman__photo {
    max-width: 280px;
    margin: 0;
  }
}

/* ============================================================
   Voices (お客様の声 — Field notes treatment)
   ============================================================ */
body.home .voices {
  padding: var(--section-gap) clamp(20px, 4vw, 40px);
  background-color: var(--color-bg-alt);
}
body.home .voices__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}
body.home .voices__head {
  margin-bottom: clamp(40px, 5vw, 56px);
  max-width: 760px;
}
body.home .voices__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(24px, 2.8vw, 36px);
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--color-primary-900);
  margin: 0 0 16px;
}
body.home .voices__lead {
  font-family: var(--font-sans-jp);
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text-muted);
  margin: 0;
}
body.home .voices__subtitle {
  font-family: var(--font-serif-jp);
  font-weight: 600;
  font-size: clamp(16px, 1.7vw, 20px);
  line-height: 1.75;
  letter-spacing: 0.06em;
  color: var(--color-primary-700);
  margin: 0;
  padding-left: 16px;
  border-left: 2px solid var(--color-accent);
  word-break: keep-all;
}
body.home .voices__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-border);
}
body.home .voice {
  padding: clamp(28px, 3vw, 40px) clamp(20px, 2.5vw, 32px);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  margin: 0;
}
body.home .voice blockquote {
  margin: 0;
  padding: 0;
  quotes: none;
  border: none;
}
body.home .voice:nth-child(odd) {
  border-right: 1px solid var(--color-border);
}
body.home .voice__mark {
  font-family: var(--font-display-en);
  font-style: italic;
  font-weight: 600;
  font-size: 40px;
  line-height: 1;
  color: var(--color-accent);
  margin: 0 0 12px;
  display: block;
}
body.home .voice__quote {
  font-family: var(--font-serif-jp);
  font-weight: 400;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.95;
  letter-spacing: 0.03em;
  color: var(--color-primary-900);
  margin: 0 0 20px;
}
body.home .voice__attr {
  display: block;
  font-family: var(--font-sans-jp);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin: 0;
}

@media (max-width: 768px) {
  body.home .voices__grid { grid-template-columns: 1fr; }
  body.home .voice { border-right: none !important; }
}

/* ============================================================
   CTA / Membership
   ============================================================ */
body.home .cta {
  background-color: var(--color-bg-alt);
  padding: clamp(80px, 10vw, 140px) clamp(20px, 4vw, 40px);
  text-align: center;
}
body.home .cta__inner {
  max-width: var(--container-narrow);
  margin: 0 auto;
}
body.home .cta__label {
  font-family: var(--font-display-en);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-primary-700);
  margin: 0 0 24px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
body.home .cta__label::before,
body.home .cta__label::after {
  content: "";
  display: inline-block;
  width: 36px;
  height: 1px;
  background-color: var(--color-accent);
}
body.home .cta__title {
  font-family: var(--font-serif-jp);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: var(--color-primary-900);
  margin: 0 0 24px;
  word-break: keep-all;
}
body.home .cta__body {
  font-family: var(--font-sans-jp);
  font-size: 15px;
  line-height: 2.0;
  color: var(--color-text);
  margin: 0 auto 40px;
  max-width: 640px;
  word-break: keep-all;
  overflow-wrap: break-word;
}
body.home .cta__buttons {
  display: inline-flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}
body.home .cta .btn--primary {
  background-color: var(--color-primary-900);
  color: #FAFAF7;
  border-color: var(--color-primary-900);
}
body.home .cta .btn--primary:hover {
  background-color: var(--color-primary-700);
  border-color: var(--color-primary-700);
}
body.home .cta .btn--secondary {
  background-color: transparent;
  color: var(--color-primary-900);
  border-color: var(--color-primary-900);
}
body.home .cta .btn--secondary:hover {
  background-color: var(--color-primary-900);
  color: #fff;
}

@media (max-width: 640px) {
  body.home .cta__buttons { flex-direction: column; width: 100%; }
  body.home .cta .btn { width: 100%; }
}

/* ============================================================
   Footer — home 限定
   ============================================================ */
body.home .home-footer {
  background-color: var(--color-primary-900);
  color: rgba(255,255,255,0.7);
  padding: clamp(48px, 6vw, 72px) clamp(20px, 4vw, 40px) 32px;
}
body.home .home-footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}
body.home .home-footer__cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: clamp(24px, 4vw, 56px);
  margin-bottom: 48px;
}
body.home .home-footer__brand .logo-img {
  width: 180px;
  aspect-ratio: 1 / 0.2954;
  background-image: url(../img/logo.png);
  background-repeat: no-repeat;
  background-size: contain;
  background-position: left center;
  filter: brightness(0) invert(1);
  margin-bottom: 20px;
}
body.home .home-footer__brand .org-name {
  font-family: var(--font-serif-jp);
  color: rgba(255,255,255,0.92);
  font-size: 15px;
  letter-spacing: 0.05em;
  line-height: 1.8;
  margin: 0 0 12px;
}
body.home .home-footer__brand .org-desc {
  font-size: 13px;
  line-height: 1.9;
  color: rgba(255,255,255,0.55);
  margin: 0;
}
body.home .home-footer h4 {
  font-family: var(--font-display-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.9);
  margin: 0 0 18px;
  padding: 0;
  border: none;
  background: transparent;
  max-width: none;
  display: block;
  text-align: left;
}
body.home .home-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
body.home .home-footer li {
  font-size: 13px;
  line-height: 1.6;
}
body.home .home-footer a {
  color: rgba(255,255,255,0.7);
  transition: color .2s ease;
}
body.home .home-footer a:hover {
  color: #fff;
}
body.home .home-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.5);
}
body.home .home-footer__bottom p { margin: 0; }
body.home .home-footer__bottom .tagline {
  font-family: var(--font-serif-jp);
  letter-spacing: 0.18em;
}

@media (max-width: 1024px) {
  body.home .home-footer__cols {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 640px) {
  body.home .home-footer__cols {
    grid-template-columns: 1fr;
    margin-bottom: 32px;
  }
  body.home .home-footer__bottom { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   Fade-in on scroll — progressive enhancement
   JS が走らない／読み込み前 は常に表示。
   html.js-loaded が付いた時のみ初期非表示→reveal アニメーション。
   ============================================================ */
html.js-loaded body.home .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .8s ease, transform .8s ease;
  will-change: opacity, transform;
}
html.js-loaded body.home .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html.js-loaded body.home .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}