.product-hero {
      background: linear-gradient(rgba(44, 62, 80, 0.75), rgba(44, 62, 80, 0.75)),
                  url('images/adblue-hero.jpg') center/cover no-repeat;
      color: white;
      padding: 80px 0;
      position: relative;
      z-index: 1;
    }

    .product-hero h1 {
      font-size: 48px;
      font-weight: 700;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
      position: relative;
      z-index: 10;
    }

    .product-hero p {
      font-size: 20px;
      opacity: 0.95;
      font-weight: 300;
      position: relative;
      z-index: 10;
    }

    .product-hero .container {
      position: relative;
      z-index: 10;
    }

    .product-content {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }

    .product-image {
      width: 100%;
      border-radius: 8px;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    }

    .product-info h2 {
      font-size: 32px;
      margin-bottom: 20px;
      color: #2c3e50;
      font-weight: 700;
    }

    .product-info h3 {
      font-size: 24px;
      margin: 32px 0 16px;
      color: #2c3e50;
      font-weight: 600;
    }

    .product-info p {
      line-height: 1.8;
      margin-bottom: 16px;
      color: #555;
    }

    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 32px;
      margin-top: 48px;
    }

    .feature-card {
      background: white;
      padding: 40px 32px;
      border-radius: 8px;
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
      border: 1px solid #e8e8e8;
      transition: all 0.3s ease, opacity 0.8s ease, transform 0.8s ease;
      position: relative;
      opacity: 0;
      transform: translateY(40px);
    }

    .feature-card.animate-in {
      opacity: 1;
      transform: translateY(0);
    }

    .feature-card.animate-in:hover {
      transform: translateY(-4px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    }

    /* Section animations */
    .animate-section {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.8s ease, transform 0.8s ease;
    }

    .animate-section.animate-in {
      opacity: 1;
      transform: translateY(0);
    }

    .specs-table {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.8s ease, transform 0.8s ease;
    }

    .specs-table.animate-in {
      opacity: 1;
      transform: translateY(0);
    }

    .feature-number {
      font-size: 48px;
      font-weight: 800;
      color: #337ab7;
      margin-bottom: 16px;
      line-height: 1;
      opacity: 0.8;
    }

    .feature-card h3 {
      font-size: 22px;
      margin-bottom: 16px;
      color: #2c3e50;
      font-weight: 700;
      line-height: 1.4;
    }

    .feature-card p {
      color: #666;
      line-height: 1.7;
      font-size: 15px;
    }

    .quality-section {
      background: #f8f9fa;
      padding: 64px 0;
      margin: 64px 0;
    }

    .quality-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 32px;
      margin-top: 40px;
    }

    .quality-item {
      background: white;
      padding: 32px;
      border-radius: 8px;
      border-left: 4px solid #337ab7;
    }

    .quality-item h4 {
      font-size: 20px;
      margin-bottom: 12px;
      color: #2c3e50;
      font-weight: 700;
    }

    .quality-item p {
      color: #666;
      line-height: 1.7;
    }

    .specs-table {
      width: 100%;
      border-collapse: collapse;
      margin: 32px 0;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    }

    .specs-table th,
    .specs-table td {
      padding: 18px 20px;
      border: 1px solid #e0e0e0;
      text-align: left;
    }

    .specs-table th {
      background-color: #2c3e50;
      color: white;
      font-weight: 600;
      width: 200px;
      min-width: 120px;
    }

    .specs-table td {
      background-color: white;
    }

    .specs-table tr:hover td {
      background-color: #f8f9fa;
    }

    @media (max-width: 768px) {
      .product-hero h1 {
        font-size: 36px;
      }

      .product-content {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .features-grid {
        grid-template-columns: 1fr;
      }

      .quality-grid {
        grid-template-columns: 1fr;
      }

      /* スペックテーブルのモバイル対応 */
      .specs-table {
        width: 100%;
        border: none;
        box-shadow: none;
      }

      .specs-table tr {
        display: block;
        margin-bottom: 16px;
        border: 1px solid #ddd;
        border-radius: 6px;
        background: #fff;
      }

      .specs-table th {
        display: block;
        width: 100%;
        padding: 12px 16px;
        background: #f5f5f5;
        color: #2c3e50;
        font-size: 13px;
        font-weight: 700;
        border: none;
        border-bottom: 2px solid #337ab7;
        text-align: left;
      }

      .specs-table td {
        display: block;
        width: 100%;
        padding: 14px 16px;
        background: #fff;
        color: #333;
        font-size: 14px;
        line-height: 1.7;
        border: none;
        text-align: left;
      }

      /* Quality Section内のテーブル */
      [style*="background: #f4f5f7"] {
        padding: 24px !important;
      }

      table[style*="border-collapse: collapse"] td,
      table[style*="border-collapse: collapse"] tr {
        font-size: 14px !important;
      }

      /* SDSセクションのグリッド対応 */
      [style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
        gap: 24px !important;
      }

      /* セクションタイトル */
      h2[style*="font-size: 42px"] {
        font-size: 28px !important;
      }

      /* VDA/SDSカードのパディング */
      [style*="padding: 48px"] {
        padding: 24px !important;
      }

      [style*="padding: 40px"] {
        padding: 24px !important;
      }

      /* ボタンのパディング */
      a[style*="padding: 16px 48px"] {
        padding: 14px 32px !important;
        font-size: 14px !important;
      }

      /* 小見出し */
      h3[style*="font-size: 24px"] {
        font-size: 20px !important;
      }

      h4[style*="font-size: 20px"] {
        font-size: 18px !important;
      }

      /* 本文 */
      p[style*="font-size: 17px"] {
        font-size: 15px !important;
      }

      p[style*="font-size: 16px"] {
        font-size: 14px !important;
      }

      /* マージン調整 */
      [style*="margin-top: 96px"] {
        margin-top: 48px !important;
      }

      [style*="margin-top: 64px"] {
        margin-top: 40px !important;
      }

      /* 画像 */
      img[style*="max-width: 100%"] {
        border-radius: 4px !important;
      }
    }
    @media (max-width: 768px) {
      /* 容器ラインナップのレスポンシブ */
      div[style*="grid-template-columns: repeat(3, 1fr)"] {
        grid-template-columns: 1fr !important;
        gap: 24px !important;
      }

      div[style*="height: 280px"] {
        height: 240px !important;
      }

      /* Storage period modal responsive */
      #storage-period-modal .modal-content {
        margin: 10% auto !important;
        width: 95% !important;
      }

      #storage-period-modal .modal-inner {
        padding: 24px !important;
      }

      #storage-period-modal h2 {
        font-size: 20px !important;
        padding-bottom: 12px !important;
        margin-bottom: 20px !important;
      }

      #storage-period-modal table th,
      #storage-period-modal table td {
        padding: 12px 10px !important;
        font-size: 13px !important;
      }

      #storage-period-modal .note-box {
        padding: 16px !important;
        font-size: 13px !important;
      }

      #close-modal {
        top: 10px !important;
        right: 10px !important;
        font-size: 28px !important;
      }
    }