:root {
      --primary: #00b4d8;
      --secondary: #0077b6;
      --accent: #90e0ef;
      --bg-light: #f1f9fb;
      --bg-dark: #023e8a;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: 'Inter', sans-serif;
      background: #f9fcfe;
      color: #212529;
    }

    /* HERO SECTION */
    .hero {
      position: relative;
      height: 100vh;
      background: url("https://livekerala.com/blog/wp-content/uploads/2021/05/purified-water.jpg") center/cover no-repeat;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
    }

    .overlay {
      background: rgba(0, 0, 0, 0.55);
      padding: 60px 20px;
      width: 100%;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
    }

    .hero-content {
      max-width: 800px;
    }

    .hero-content h1 {
      font-size: 3.5rem;
      margin-bottom: 20px;
      font-weight: 700;
    }
    .hero-content h1 strong{
        color: white;
    }

    .hero-content p {
      font-size: 1.2rem;
      line-height: 1.6;
      opacity: 0.95;
    }
    .hero-content p strong{
        color: white;
    }

    .section {
      max-width: 1200px;
      margin: auto;
      padding: 60px 20px;
    }

    .section:nth-child(even) {
      background: var(--bg-light);
    }

    .section h2 {
      font-size: 2.2rem;
      text-align: center;
      color: var(--secondary);
      position: relative;
      margin-bottom: 40px;
    }

    .section h2::after {
      content: '';
      width: 60px;
      height: 4px;
      background: var(--primary);
      display: block;
      margin: 12px auto 0;
      border-radius: 3px;
    }

    .text-center {
      text-align: center;
      margin-bottom: 40px;
    }

    .cards {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
    }

    .card {
      background: white;
      border-radius: 14px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
      padding: 30px 25px;
      transition: 0.3s ease;
      text-align: center;
      border-top: 4px solid var(--accent);
    }

    .card:hover {
      transform: translateY(-6px);
      box-shadow: 0 16px 28px rgba(0, 0, 0, 0.1);
      border-color: var(--primary);
    }

    .card-icon {
      font-size: 2.7rem;
      color: var(--primary);
      margin-bottom: 15px;
    }

    .card h3 {
      margin-bottom: 15px;
      color: var(--secondary);
    }

    .card p {
      font-size: 0.95rem;
      color: #495057;
    }

    footer {
      background: var(--bg-dark);
      color: white;
      padding: 40px 20px;
      text-align: center;
    }

    footer p {
      margin: 5px 0;
    }

    @media (max-width: 768px) {
      .hero-content h1 {
        font-size: 2.4rem;
      }

      .hero-content p {
        font-size: 1rem;
      }

      .section h2 {
        font-size: 1.7rem;
      }
    }