:root {
      --card-bg: #ffffff;
      --card-shadow: rgba(0, 0, 0, 0.1);
      --primary: #007bff;
      --gradient: linear-gradient(90deg, #007bff, #00c6ff);
    }

    body {
      background: #f8f9fa;
      font-family: 'Segoe UI', sans-serif;
      color: #333;
    }

    .box {
      background: var(--card-bg);
      border-radius: 16px;
      padding: 24px;
      margin: 28px 0;
      box-shadow: 0 4px 12px var(--card-shadow);
      opacity: 0;
      transform: translateY(30px);
      /* Separate scroll + hover transitions */
      transition: opacity 0.7s ease-in-out, transform 0.3s ease, box-shadow 0.3s ease;
    }

    .box.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* Instant hover effect */
    .box:hover {
      transform: translateY(-15px);
      box-shadow: 0 8px 20px rgba(0, 198, 255, 0.3);
    }

    h1, h2 {
      font-weight: 700;
      color: #222;
      margin-bottom: 16px;
    }

    ul li {
      margin-bottom: 6px;
    }

    button.cta {
      background: var(--gradient);
      border: none;
      padding: 10px 24px;
      border-radius: 50px;
      font-size: 17px;
      cursor: pointer;
      color: white;
      transition: 0.3s ease;
    }

    button.cta:hover {
      transform: scale(1.05);
      box-shadow: 0 4px 10px rgba(0, 198, 255, 0.5);
    }

    hr {
      border: 0;
      height: 1px;
      background: rgba(0,0,0,0.06);
      margin: 15px 0;
    }

    footer {
      text-align: center;
      padding: 12px;
      background: #111;
      color: white;
      font-size: 14px;
      margin-top: 20px;
      border-radius: 10px 10px 0 0;
    }

    /* Responsive design */
    @media (max-width: 576px) {
      h1 {
        font-size: 1.5rem;
      }
      h2 {
        font-size: 1.2rem;
      }
      .box {
        padding: 18px;
        margin: 20px 0;
      }
    }