body {
      background-color: #f0f2ff;
    }

    .layout4-section {
      background-color: #f0f2ff;
    }

    .layout4-section .text-center h1 {
      font-size: 2.8rem;
      font-weight: 800;
      margin-bottom: 0.5rem;
    }

    .layout4-section .text-center p {
      max-width: 720px;
      margin-left: auto;
      margin-right: auto;
      font-size: 1.1rem;
    }

    .card-grid {
      display: grid;
      gap: 2rem;
      grid-template-columns: 1fr;
      max-width: 1400px;
      margin-left: auto;
      margin-right: auto;
    }

    .feature-card {
      background-color: #ffffff;
      border-radius: 2rem;
      box-shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
      min-height: 320px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 2.5rem;
    }

    .num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #0d6efd;
      font-size: 3rem;
      font-weight: 900;
      margin-bottom: 1.2rem;
      line-height: 1;
    }

    .feature-card p {
      font-size: 1.05rem;
      font-weight: 500;
      color: #4b5563;
      line-height: 1.75;
    }

    .btn-read {
      background-color: #0d6efd;
      border: none;
      padding: 0.75rem 1.5rem;
      width: 100%;
      color: #fff;
      font-size: 1rem;
      font-weight: 600;
      border-radius: 999px;
      transition: background-color 0.2s ease;
      text-decoration: none;
      display: block;
      text-align: center;
      margin-top: 2rem;
    }

    .btn-read:hover {
      background-color: #0b5ed7;
      color: #fff;
    }

    @media screen and (min-width: 768px) {
      .card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media screen and (min-width: 1200px) {
      .card-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }
    }