.product-content h2 {
      font-size: 1.9rem;
      font-weight: 700;
      color: #0b2b44;
      margin: 2.2rem 0 1.3rem;
      padding-bottom: 0.5rem;
      border-bottom: 3px solid #e6f0f9;
      letter-spacing: -0.2px;
    }
    .product-content h2:first-of-type {
      margin-top: 0.6rem;
    }
    .product-content h3 {
      font-size: 1.4rem;
      font-weight: 600;
      color: #1b405c;
      margin: 1.6rem 0 0.8rem;
    }
    .product-content p {
      font-size: 1.05rem;
      margin-bottom: 1.2rem;
      color: #2d3f50;
    }
    .product-content .intro-card {
      background: #f4faff;
      padding: 1.5rem 2rem;
      border-radius: 20px;
      margin: 1.8rem 0 2rem;
      border-left: 6px solid #1e6eb5;
      font-weight: 500;
      font-size: 1.15rem;
      color: #0a3146;
    }
    .video-wrap {
      border-radius: 22px;
      overflow: hidden;
      box-shadow: 0 12px 28px rgba(0,0,0,0.08);
      margin: 1.8rem 0 2.5rem;
      position: relative;
      padding-bottom: 56.25%;
      height: 0;
      background: #000;
    }
    .video-wrap iframe {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      border: 0;
    }
    .spec-table-wrapper {
      margin: 1.8rem 0 2.2rem;
    }
    .spec-table-wrapper h3 {
      font-size: 1.5rem;
      margin-bottom: 0.8rem;
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      background: white;
      border-radius: 18px;
      overflow: hidden;
      box-shadow: 0 8px 24px rgba(0,0,0,0.04);
      font-size: 1rem;
    }
    .spec-table th {
      background: #0f354f;
      color: white;
      font-weight: 600;
      padding: 15px 20px;
      text-align: left;
      font-size: 1.05rem;
    }
    .spec-table td {
      padding: 13px 20px;
      border-bottom: 1px solid #eef3f9;
      background: #ffffff;
    }
    .spec-table tr:last-child td {
      border-bottom: none;
    }
    .spec-table tr:nth-child(even) td {
      background: #f9fcff;
    }
    .feature-list {
      list-style: none;
      padding-left: 0;
      margin: 1.5rem 0;
    }
    .feature-list li {
      background: #f7faff;
      margin-bottom: 0.8rem;
      padding: 0.9rem 1.4rem;
      border-radius: 14px;
      font-size: 1.02rem;
      border-left: 5px solid #2f7bbf;
      color: #1e384d;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid #e2ebf3;
      border-radius: 18px;
      padding: 1.4rem 1.8rem;
      margin-bottom: 1.3rem;
      transition: all 0.15s;
      box-shadow: 0 4px 12px rgba(0,0,0,0.02);
    }
    .faq-item h3 {
      margin-top: 0;
      margin-bottom: 0.5rem;
      font-size: 1.25rem;
      color: #0c334c;
    }
    .faq-item p, .faq-item ul {
      margin-bottom: 0.5rem;
      color: #2c4053;
    }
    .inquiry-btn-zone {
      text-align: center;
      margin: 3rem 0 0.5rem;
    }
    .inquiry-btn {
      display: inline-block;
      background: linear-gradient(135deg, #d49f4c, #b57935);
      color: white;
      font-weight: 700;
      font-size: 1.3rem;
      padding: 16px 48px;
      border-radius: 60px;
      text-decoration: none;
      letter-spacing: 0.4px;
      box-shadow: 0 14px 28px rgba(180,120,50,0.35);
      transition: 0.25s ease;
      border: none;
      cursor: pointer;
      font-family: Arial, sans-serif;
    }
    .inquiry-btn:hover {
      background: #b88436;
      box-shadow: 0 18px 34px rgba(150,95,30,0.45);
      transform: translateY(-2px);
    }
    @media (max-width: 768px) {
      .product-content {
        padding: 1.8rem 1.2rem;
      }
    }