* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
  }
  
  body {
    background: #f9f9f9;
    color: #333;
    line-height: 1.6;
  }
  
  .navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background: #0066ff;
    color: #fff;
  }
  
  .navbar .logo {
    font-size: 24px;
    font-weight: bold;
  }
  
  .navbar nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 12px;
    transition: 0.3s;
  }
  
  .navbar nav a:hover {
    text-decoration: underline;
  }
  
  .hero {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-around;
    padding: 60px 40px;
    background: linear-gradient(135deg, #0066ff, #00ccff);
    color: #fff;
  }
  
  .hero-text {
    flex: 1 1 400px;
    max-width: 500px;
  }
  
  .hero-text h1 {
    font-size: 42px;
    margin-bottom: 15px;
  }
  
  .hero-text p {
    font-size: 18px;
    margin-bottom: 25px;
  }
  
  .btn-group {
    display: flex;
    gap: 15px;
  }
  
  .btn.download {
    padding: 12px 20px;
    background: #fff;
    color: #0066ff;
    font-weight: bold;
    border-radius: 6px;
    text-decoration: none;
    transition: 0.3s;
  }
  
  .btn.download:hover {
    background: #eaeaea;
  }
  
  .hero-image img {
    max-width: 320px;
    border-radius: 20px;
  }
  
  .features {
    text-align: center;
    padding: 60px 20px;
    background: #fff;
  }
  
  .features h2 {
    font-size: 32px;
    margin-bottom: 40px;
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
  }
  
  .feature-card {
    background: #f1f1f1;
    padding: 20px;
    border-radius: 12px;
    transition: transform 0.3s;
  }
  
  .feature-card:hover {
    transform: translateY(-5px);
  }
  
  footer {
    text-align: center;
    padding: 20px;
    background: #0066ff;
    color: #fff;
    margin-top: 40px;
  }
  
  .btn-group {
    display: flex;
    justify-content: center; /* horizontal center */
    align-items: center;     /* vertical center (if needed) */
    margin-top: 20px;        /* thoda gap upar se */
  }