}

  /* INTRO 共通スタイルは common.css に移動済み */

  /* ==================================================
     BUSINESS SECTION (per-business detail)
     ================================================== */
  .business-section {
    padding: 160px 0 220px;
    background: #fff;
    position: relative;
  }
  .business-section.dark {
    background: var(--ink);
    color: #fff;
  }
  .business-section + .business-section { padding-top: 160px; }
  .business-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 60px;
  }

  /* Hero image of each business */
  .business-hero-img {
    aspect-ratio: 16 / 7;
    background: var(--fill-mid);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--note);
    font-size: 11px;
    letter-spacing: 0.05em;
    border-radius: 6px;
    margin-bottom: 80px;
    overflow: hidden;
  }
  .business-section.dark .business-hero-img {
    background: rgba(255,255,255,0.04);
    color: rgba(255,255,255,0.45);
    border: 1px solid rgba(255,255,255,0.08);
  }

  /* ==================================================
     BUSINESS TAGLINE — 事業名の下に左寄せで配置
     ================================================== */
  .business-tagline {
    margin-top: 12px;
    text-align: left;
    font-size: 14px;
    letter-spacing: 0.08em;
    line-height: 1.6;
    color: var(--accent);
    font-weight: 400;
  }
  .business-section.dark .business-tagline {
    color: rgba(255,255,255,0.85);
  }
  @media (max-width: 768px) {
    .business-tagline {
      font-size: 13px;
      letter-spacing: 0.05em;
    }
  }

  /* Business header (number + title + tagline + desc + CTA を縦積み) */
  .business-head {
    display: flex;
    flex-direction: column;
    gap: 40px;
    padding-bottom: 72px;
    margin-bottom: 96px;
    border-bottom: 1px solid var(--line-soft);
  }
  .business-section.dark .business-head {
    border-bottom-color: rgba(255,255,255,0.18);
  }
  .business-head-left { }
  .business-en {
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--note);
    margin-bottom: 24px;
    text-transform: uppercase;
    font-family: 'Helvetica Neue', sans-serif;
    display: inline-block;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line-soft);
  }
  .business-section.dark .business-en {
    color: rgba(255,255,255,0.55);
    border-bottom-color: rgba(255,255,255,0.18);
  }
  .business-title {
    font-size: 40px;
    font-weight: 400;
    line-height: 1.4;
    letter-spacing: 0.05em;
    margin-bottom: 18px;
  }
  .business-head-right {
    display: flex;
    flex-direction: column;
    gap: 28px;
  }
  .business-desc {
    font-size: 14px;
    line-height: 2.0;
    color: #444444;
  }
  .business-section.dark .business-desc {
    color: rgba(255,255,255,0.78);
  }
  .business-cta {
    align-self: flex-start;
    font-size: 12px;
    letter-spacing: 0.1em;
    color: #444444;
    cursor: pointer;
    position: relative;
    padding-bottom: 4px;
    display: inline-block;
  }
  .business-section.dark .business-cta { color: #fff; }
  .business-cta::after { content: ' →'; }
  .business-cta::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 1px;
    background: currentColor;
    transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .business-cta:hover::before { width: 100%; }

  /* Subsection label inside business sections */
  .business-sub-label {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 28px;
  }
  .business-sub-label-en {
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--note);
    text-transform: uppercase;
    font-family: 'Helvetica Neue', sans-serif;
  }
  .business-section.dark .business-sub-label-en {
    color: rgba(255,255,255,0.5);
  }
  .business-sub-label-ja {
    font-size: 14px;
    letter-spacing: 0.05em;
    color: #444444;
  }
  .business-section.dark .business-sub-label-ja {
    color: rgba(255,255,255,0.85);
  }
  .business-sub-label-count {
    margin-left: auto;
    font-size: 11px;
    letter-spacing: 0.05em;
    color: var(--note);
  }
  .business-section.dark .business-sub-label-count {
    color: rgba(255,255,255,0.5);
  }

  .business-companies {
    margin-bottom: 112px;
  }
  .business-brands {
    margin-bottom: 96px;
  }

  /* Companies grid (light bg) */
  .companies-grid-light {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }
  .company-card-light {
    background: #fff;
    border: 1px solid var(--line-soft);
    padding: 22px 20px;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    transition: box-shadow 0.25s, transform 0.25s;
    border-radius: 6px;
  }
  .company-card-light:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    transform: translateY(-2px);
  }
  .company-logo-light {
    height: 72px;
    border: 1px dashed var(--line-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    color: var(--note);
    margin-bottom: 14px;
    letter-spacing: 0.05em;
    border-radius: 3px;
  }
  .company-name-light {
    font-size: 12px;
    font-weight: 400;
    margin-bottom: 6px;
    letter-spacing: 0.05em;
    line-height: 1.5;
    color: #444444;
  }
  .company-summary-light {
    font-size: 10px;
    color: var(--note);
    line-height: 1.6;
    margin-bottom: 12px;
    flex: 1;
  }
  .company-tag-light {
    font-size: 9px;
    letter-spacing: 0.1em;
    border-top: 1px solid var(--line-soft);
    padding-top: 10px;
    text-transform: uppercase;
    color: var(--accent);
  }

  /* Companies grid (dark bg) — top.html と同等 */
  .companies-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }
  .company-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.12);
    padding: 22px 20px;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    transition: background 0.2s;
    border-radius: 6px;
  }
  .company-card:hover {
    background: rgba(255,255,255,0.08);
  }
  .company-logo {
    height: 72px;
    border: 1px dashed rgba(255,255,255,0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    color: rgba(255,255,255,0.45);
    margin-bottom: 14px;
    letter-spacing: 0.05em;
    border-radius: 3px;
  }
  .company-name {
    font-size: 12px;
    font-weight: 400;
    margin-bottom: 6px;
    letter-spacing: 0.05em;
    line-height: 1.5;
  }
  .company-summary {
    font-size: 10px;
    color: rgba(255,255,255,0.65);
    line-height: 1.6;
    margin-bottom: 12px;
    flex: 1;
  }
  .company-tag {
    font-size: 9px;
    letter-spacing: 0.05em;
    border-top: 1px solid rgba(255,255,255,0.12);
    padding-top: 10px;
    text-transform: uppercase;
  }
  .company-tag.lifestyle,
  .company-tag.entertainment,
  .company-tag.sustainable { color: #fff; }

  /* Brands grid */
  .brand-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
  }
  .brand-cell {
    border: 1px solid var(--line-soft);
    background: #fff;
    aspect-ratio: 3 / 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 12px;
    color: #444444;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, transform 0.25s;
    border-radius: 4px;
    padding: 12px;
    text-align: center;
  }
  .brand-cell:hover {
    border-color: var(--line-soft);
    color: #444444;
    transform: translateY(-2px);
  }
  .brand-cell-name {
    font-size: 13px;
    letter-spacing: 0.05em;
  }
  .brand-cell-cat {
    font-size: 10px;
    letter-spacing: 0.05em;
    color: var(--note);
  }
  /* dark variant for brands */
  .business-section.dark .brand-cell {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.12);
    color: #fff;
  }
  .business-section.dark .brand-cell:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.25);
  }
  .business-section.dark .brand-cell-cat {
    color: rgba(255,255,255,0.55);
  }