.product-hero {
      background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('images/oil-analysis.png') center/cover no-repeat;
      color: white;
      padding: 120px 0 100px;
      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;
    }

    .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);
    }

    .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;
      transform: translateY(40px);
    }

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

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

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

    @media (max-width: 768px) {
      .product-hero h1 {
        font-size: 36px;
      }
      .product-hero p {
        font-size: 18px;
      }
      div[style*="grid-template-columns: repeat(3, 1fr)"],
      div[style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
      }
    }