.heatsink-page {
      font-family: Arial, Helvetica, sans-serif;
      color: #333;
      line-height: 1.75;
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }

    .heatsink-page img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: 10px;
    }

    .hero-image {
      margin-bottom: 28px;
    }

    .content-block {
      margin-bottom: 38px;
    }

    .section-title {
      font-size: 24px;
      font-weight: 700;
      color: #1f3f66;
      margin: 0 0 14px;
      padding-bottom: 10px;
      border-bottom: 3px solid #1e88e5;
      text-transform: uppercase;
    }

    .content-block p {
      font-size: 16px;
      margin: 0 0 14px;
    }

    .highlight-box {
      background: #f5f9ff;
      border-left: 4px solid #1e88e5;
      padding: 18px 22px;
      margin: 20px 0;
      border-radius: 8px;
    }

    .two-column {
      display: grid;
      grid-template-columns: 1fr 1.35fr;
      gap: 28px;
      align-items: start;
      margin: 24px 0;
    }

    .two-column .image-wrap img {
      width: 100%;
      max-height: 260px;
      object-fit: contain;
      background: #f7f7f7;
    }

    .performance-list {
      list-style: none;
      padding: 0;
      margin: 14px 0 20px;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
    }

    .performance-list li {
      background: #f8f8f8;
      padding: 10px 14px;
      border-radius: 6px;
      border-left: 3px solid #1e88e5;
      font-size: 15px;
    }

    .image-center {
      margin: 24px auto;
      text-align: center;
    }

    .image-center img {
      margin: 0 auto;
    }

    .final-note {
      background: #eef6ff;
      padding: 22px 26px;
      border-radius: 10px;
      font-size: 17px;
      font-weight: 500;
      color: #1f3f66;
      margin-top: 30px;
    }

    @media (max-width: 768px) {
      .two-column {
        grid-template-columns: 1fr;
      }

      .performance-list {
        grid-template-columns: 1fr;
      }

      .section-title {
        font-size: 21px;
      }
    }