.hero-mbast {
      background-image: url('https://images.unsplash.com/photo-1551288049-bebda4e38f71?w=1400&q=80');
    }

    /* ─── M-BAST概要 ─── */
    .mbast-intro { padding: 72px 64px; background: var(--color-bg); }
    .mbast-intro-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }

    .mbast-about-box {
      background: var(--color-bg-light);
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      padding: 36px;
    }
    .mbast-about-box h3 {
      font-family: var(--font-serif);
      font-size: 16px;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 16px;
      padding-bottom: 12px;
      border-bottom: 2px solid var(--color-gold);
      letter-spacing: 0.04em;
    }
    .mbast-about-box p {
      font-size: 13.5px;
      color: var(--color-text-light);
      line-height: 1.95;
    }
    .mbast-use-items { display: flex; flex-direction: column; gap: 16px; margin-top: 24px; }
    .mbast-use-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      padding: 16px 20px;
      background: white;
      border-radius: var(--radius-sm);
      border-left: 4px solid var(--color-primary);
      box-shadow: var(--shadow-sm);
    }
    .mbast-use-item-icon { font-size: 24px; flex-shrink: 0; margin-top: 2px; }
    .mbast-use-item-title {
      font-family: var(--font-serif);
      font-size: 14px;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 4px;
    }
    .mbast-use-item-text { font-size: 12.5px; color: var(--color-text-light); line-height: 1.7; }

    /* ─── 分類セクション ─── */
    .classify-section { padding: 72px 64px; background: var(--color-bg-light); }
    .classify-inner { max-width: 1200px; margin: 0 auto; }
    .classify-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 40px; }
    .classify-block {
      background: white;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--color-border);
    }
    .classify-block-header {
      background: var(--color-primary);
      color: white;
      padding: 18px 24px;
      font-family: var(--font-serif);
      font-size: 15px;
      font-weight: 700;
      letter-spacing: 0.04em;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .classify-block-sub {
      background: rgba(255,255,255,0.1);
      padding: 10px 24px;
      font-size: 11px;
      color: rgba(255,255,255,0.7);
      letter-spacing: 0.05em;
      font-family: var(--font-en);
    }
    .classify-block-body { padding: 24px; }
    .classify-sub-title {
      font-family: var(--font-serif);
      font-size: 13px;
      font-weight: 700;
      color: var(--color-primary);
      margin: 20px 0 10px;
      padding-bottom: 6px;
      border-bottom: 1px solid var(--color-border-light);
    }
    .classify-sub-title:first-child { margin-top: 0; }
    .classify-list { display: flex; flex-direction: column; gap: 7px; }
    .classify-list li {
      font-size: 13px;
      color: var(--color-text-light);
      display: flex;
      align-items: flex-start;
      gap: 8px;
      line-height: 1.65;
    }
    .classify-list li::before {
      content: '─';
      color: var(--color-gold);
      font-weight: 700;
      flex-shrink: 0;
    }

    /* ─── 守秘義務 ─── */
    .caution-section { padding: 48px 64px; background: var(--color-bg); }
    .caution-inner { max-width: 1200px; margin: 0 auto; }
    .caution-box {
      background: #fff9f0;
      border: 2px solid var(--color-gold);
      border-radius: var(--radius-md);
      padding: 32px 36px;
    }
    .caution-box h3 {
      font-family: var(--font-serif);
      font-size: 15px;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .caution-box ul { display: flex; flex-direction: column; gap: 10px; }
    .caution-box li {
      font-size: 13.5px;
      color: var(--color-text);
      line-height: 1.8;
      display: flex;
      align-items: flex-start;
      gap: 8px;
    }
    .caution-box li::before { content: '※'; color: var(--color-gold); font-weight: 700; flex-shrink: 0; }

    /* ─── サンプルデータ ─── */
    .sample-section { padding: 72px 64px; background: var(--color-bg-light); }
    .sample-inner { max-width: 1200px; margin: 0 auto; }
    .sample-badge {
      display: inline-block;
      background: var(--color-accent);
      color: white;
      padding: 4px 14px;
      border-radius: 2px;
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.1em;
      margin-bottom: 20px;
    }
    .sample-table-wrap {
      background: white;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--color-border);
      overflow-x: auto;
    }
    .sample-table-title {
      background: var(--color-primary);
      color: white;
      padding: 16px 24px;
      font-family: var(--font-serif);
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.04em;
    }
    .sample-table { width: 100%; border-collapse: collapse; font-size: 13px; }
    .sample-table th {
      background: var(--color-bg-light);
      color: var(--color-primary);
      padding: 12px 16px;
      font-weight: 600;
      font-family: var(--font-serif);
      font-size: 12px;
      text-align: left;
      border-bottom: 1px solid var(--color-border);
      white-space: nowrap;
    }
    .sample-table td {
      padding: 11px 16px;
      border-bottom: 1px solid var(--color-border-light);
      color: var(--color-text-light);
      vertical-align: middle;
    }
    .sample-table td:first-child { font-weight: 600; color: var(--color-primary); }
    .sample-table td:last-child, .sample-table th:last-child { text-align: right; }
    .sample-table td.num { text-align: right; font-family: var(--font-en); font-weight: 600; color: var(--color-primary); }
    .sample-table td.sub { padding-left: 28px; color: var(--color-text-muted); font-size: 12px; }
    .sample-table tr:nth-child(even) td { background: #fafafa; }
    .sample-table tr:hover td { background: #f0f4f8; }
    .sample-table tfoot td { background: var(--color-primary); color: white; font-weight: 700; }
    .sample-table tfoot td.num { color: white; }

@media (max-width: 900px) {
  .mbast-intro { padding: 48px 24px; }
  .mbast-intro-inner { grid-template-columns: 1fr; gap: 36px; }
  .classify-tabs { grid-template-columns: 1fr; gap: 24px; }
  .sample-section { padding: 48px 24px; }
}

@media (max-width: 640px) {
  .sample-section { padding: 40px 16px; }
}