.heatsink-page {
    --rx-navy: #102a43;
    --rx-blue: #1e88e5;
    --rx-blue-dark: #0f5fa8;
    --rx-light: #f5f9ff;
    --rx-border: #d9e2ec;
    --rx-text: #334155;
    --rx-muted: #52616f;
    --rx-white: #ffffff;

    font-family: Calibri, Arial, Helvetica, sans-serif;
    color: var(--rx-text);
    line-height: 1.75;
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 22px 64px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  }

  .heatsink-page * {
    box-sizing: border-box;
  }

  .heatsink-page img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 18px;
    box-shadow: 0 12px 32px rgba(16, 42, 67, 0.12);
  }

  .hero-image {
    margin-bottom: 42px;
    padding: 18px;
    background: #ffffff;
    border: 1px solid var(--rx-border);
    border-radius: 24px;
    box-shadow: 0 18px 45px rgba(16, 42, 67, 0.08);
  }

  .hero-image img {
    width: 100%;
  }

  .content-block {
    margin-bottom: 46px;
    padding: 36px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--rx-border);
    border-radius: 24px;
    box-shadow: 0 10px 34px rgba(16, 42, 67, 0.06);
  }

  .section-title,
  .content-block h2 {
    font-size: 30px;
    line-height: 1.25;
    font-weight: 700;
    color: var(--rx-navy);
    margin: 0 0 20px;
    padding-left: 16px;
    border-left: 5px solid var(--rx-blue);
    border-bottom: none;
    text-transform: uppercase;
  }

  .content-block h3 {
    font-size: 21px;
    color: #1f3f66;
    margin: 24px 0 12px;
  }

  .content-block p {
    font-size: 16px;
    margin: 0 0 16px;
    color: var(--rx-muted);
  }

  .content-block a {
    color: var(--rx-blue-dark);
    text-decoration: none;
    font-weight: 600;
  }

  .content-block a:hover {
    text-decoration: underline;
  }

  .highlight-box {
    background: linear-gradient(135deg, #eef6ff, #ffffff);
    border-left: 5px solid var(--rx-blue);
    padding: 22px 26px;
    margin: 24px 0;
    border-radius: 16px;
    border-top: 1px solid #bfdbfe;
    border-right: 1px solid #bfdbfe;
    border-bottom: 1px solid #bfdbfe;
  }

  .performance-list {
    list-style: none;
    padding: 0;
    margin: 18px 0 24px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .performance-list li {
    background: var(--rx-light);
    padding: 14px 18px;
    border-radius: 14px;
    border: 1px solid var(--rx-border);
    border-left: 4px solid var(--rx-blue);
    font-size: 16px;
    color: var(--rx-text);
  }

  .image-center {
    margin: 28px auto;
    text-align: center;
  }

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

  .final-note {
    background: linear-gradient(135deg, #eef6ff, #ffffff);
    padding: 26px 30px;
    border-radius: 18px;
    font-size: 17px;
    font-weight: 500;
    color: #1f3f66;
    margin-top: 32px;
    border: 1px solid #bfdbfe;
  }

  .quote-section {
    text-align: center;
    padding: 56px 32px;
    border-radius: 30px;
    background: linear-gradient(135deg, #102a43, #1e88e5);
    color: #ffffff;
    box-shadow: 0 18px 45px rgba(16, 42, 67, 0.16);
  }

  .quote-section h2 {
    margin: 0 0 16px;
    color: #ffffff;
    font-size: 38px;
    line-height: 1.2;
  }

  .quote-section p {
    max-width: 760px;
    margin: 0 auto 30px;
    color: #eaf4ff;
    font-size: 17px;
  }

  .quote-button {
    display: inline-block;
    padding: 15px 36px;
    border-radius: 999px;
    background: #ffffff;
    color: #102a43;
    text-decoration: none;
    font-size: 17px;
    font-weight: 800;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.25s ease;
  }

  .quote-button:hover {
    transform: translateY(-2px);
    background: #eef6ff;
    color: #0f5fa8;
  }

  @media (max-width: 768px) {
    .heatsink-page {
      padding: 34px 16px 48px;
    }

    .content-block,
    .quote-section {
      padding: 28px 22px;
    }

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

    .section-title,
    .content-block h2 {
      font-size: 25px;
    }

    .quote-section h2 {
      font-size: 30px;
    }
  }