body {
      margin: 0;
      font-family: 'Segoe UI', Arial, sans-serif;
      background: #f7f9fa;
      color: #222;
    }
    header {
      background: #007BFF;
      color: #fff;
      padding: 20px 0;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    }
    nav {
      background: #fff;
      box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    }
    nav ul {
      list-style: none;
      display: flex;
      justify-content: center;
      gap: 30px;
      margin: 0;
      padding: 15px 0;
    }
    nav ul li a {
      text-decoration: none;
      color: #007BFF;
      font-weight: 500;
      transition: color 0.2s;
    }
    nav ul li a:hover {
      color: #0056b3;
    }
    .hero {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(90deg, #007BFF 60%, #fff 100%);
      color: #fff;
      padding: 60px 5%;
      min-height: 350px;
    }
    .hero-content {
      flex: 1 1 350px;
      max-width: 600px;
    }
    .hero-content h1 {
      font-size: 2.8rem;
      margin-bottom: 20px;
    }
    .hero-content p {
      font-size: 1.2rem;
      margin-bottom: 30px;
    }
    .hero-img {
      flex: 1 1 250px;
      text-align: center;
    }
    .hero-img img {
      width: 250px;
      border-radius: 20px;
      box-shadow: 0 4px 24px rgba(0,0,0,0.12);
    }
    .btn {
      background: #fff;
      color: #007BFF;
      padding: 12px 28px;
      border: none;
      border-radius: 6px;
      font-size: 1.1rem;
      font-weight: bold;
      cursor: pointer;
      text-decoration: none;
      transition: background 0.2s, color 0.2s;
      box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    }
    .btn:hover {
      background: #007BFF;
      color: #fff;
    }
    .marketing {
      background: #fff;
      padding: 50px 5%;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0,0,0,0.05);
      margin-bottom: 40px;
    }
    .marketing h2 {
      font-size: 2.2rem;
      margin-bottom: 20px;
      color: #007BFF;
    }
    .features {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 40px;
      margin-top: 30px;
    }
    .feature-card {
      background: #f1f5fb;
      border-radius: 12px;
      padding: 30px 20px;
      width: 280px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.07);
      text-align: left;
      transition: transform 0.2s;
    }
    .feature-card:hover {
      transform: translateY(-5px) scale(1.03);
    }
    .feature-card i {
      font-size: 2.2rem;
      color: #007BFF;
      margin-bottom: 15px;
    }
    .feature-card h3 {
      font-size: 1.2rem;
      margin-bottom: 10px;
      color: #222;
    }
    .feature-card p {
      font-size: 1rem;
      color: #555;
    }
    .exam-section {
      background: #f7f9fa;
      padding: 40px 5%;
    }
    .exam-cards {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 30px;
    }
    .exam-card {
      background: #fff;
      padding: 25px;
      border-radius: 12px;
      text-align: center;
      width: 300px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.07);
      transition: transform 0.2s;
    }
    .exam-card:hover {
      transform: translateY(-5px) scale(1.03);
    }
    .exam-card img {
      width: 100%;
      border-radius: 10px;
      margin-bottom: 15px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    }
    .exam-card h3 {
      color: #007BFF;
      margin-bottom: 10px;
    }
    .exam-card p {
      color: #555;
      margin-bottom: 15px;
    }
    .exam-card .btn {
      width: 100%;
    }
    footer {
      background: #007BFF;
      color: #fff;
      text-align: center;
      padding: 30px 5%;
      margin-top: 40px;
    }
    footer ul {
      list-style: none;
      display: flex;
      justify-content: center;
      gap: 25px;
      padding: 0;
      margin: 20px 0 10px 0;
    }
    footer ul li a {
      text-decoration: none;
      color: #fff;
      font-weight: 500;
      transition: color 0.2s;
    }
    footer ul li a:hover {
      color: #f1f5fb;
    }
    .social-media a {
      margin: 0 10px;
      color: #fff;
      font-size: 1.7rem;
      transition: color 0.2s;
    }
    .social-media a:hover {
      color: #f1f5fb;
    }
    @media (max-width: 900px) {
      .hero { flex-direction: column; text-align: center; }
      .hero-img { margin-top: 30px; }
      .features { flex-direction: column; align-items: center; }
      .exam-cards { flex-direction: column; align-items: center; }
    }