* { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: 'Segoe UI', sans-serif;
      background: linear-gradient(to right, #e0f7fa, #fff);
      padding-top: 80px;
    }

    /* Navigation Header */
    nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background-color: #004d40;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 14px 20px;
      z-index: 1000;
    }
    nav .logo {
      font-size: 1.5em;
      color: white;
      font-weight: bold;
    }
    nav ul {
      display: flex;
      gap: 20px;
    }
    nav ul li {
      list-style: none;
    }
    nav ul li a {
      text-decoration: none;
      color: white;
      font-size: 1em;
      transition: color 0.2s;
    }
    nav ul li a:hover {
      color: #ffccbc;
    }

    header {
      text-align: center;
      margin: 40px 0 20px;
    }
    header h1 {
      font-size: 2.2em;
      color: #00796b;
    }
    header p {
      font-size: 1.1em;
      color: #333;
      margin-top: 10px;
    }

    .grid {
      display: grid;
      gap: 20px;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      max-width: 960px;
      margin: auto;
      padding: 0 20px;
    }

    .card {
      background: #ffffff;
      padding: 20px;
      border-radius: 10px;
      border: 1px solid #ddd;
      box-shadow: 0 2px 6px rgba(0,0,0,0.06);
      transition: 0.3s;
    }
    .card:hover {
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
      transform: translateY(-3px);
    }
    .card h2 {
      color: #00796b;
      margin-bottom: 10px;
      font-size: 1.3em;
    }
    .card p {
      font-size: 0.95em;
      margin-bottom: 10px;
      color: #444;
    }
    .card a {
      display: inline-block;
      text-decoration: none;
      padding: 8px 16px;
      background-color: white;
      color: #00796b;
      border-radius: 6px;
    }
    .card a:hover {
      background-color: #004d40;
      color:white;
    }

    /* Enhanced Footer */
    footer {
      text-align: center;
      margin: 60px 0 20px;
      font-size: 14px;
      color: #666;
    }
    footer a {
      color: #00796b;
      text-decoration: none;
      margin: 0 8px;
    }
    footer a:hover {
      text-decoration: underline;
    }