body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: #eef2f7;
    color: #1f1f1f;
  }
  
  .header {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 1.2rem 2rem;
    background-color: #ffffff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  }
  
  .logo {
    height: 50px;
  }
  
  .hero {
    background: linear-gradient(to right, #dfeffd, #f6fafd);
    text-align: center;
    padding: 4rem 2rem;
  }
  
  .hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
  }
  
  .hero p {
    font-size: 1.2rem;
    color: #3f3f3f;
    max-width: 600px;
    margin: 0 auto 2rem;
  }
  
  .cta-button {
    background-color: #007bff;
    color: #fff;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.2s;
  }
  
  .cta-button:hover {
    background-color: #005fd1;
  }
  
  .problem {
    padding: 4rem 2rem;
    background-color: #ffffff;
    text-align: center;
  }
  
  .problem.alt-bg {
    background-color: #eef2f7;
  }
  
  .problem .content {
    max-width: 800px;
    margin: auto;
  }
  
  .problem h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
  }
  
  .problem p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    color: #333;
  }
  
  .features {
    padding: 4rem 2rem;
    background-color: #ffffff;
    text-align: center;
  }
  
  .features h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
  }
  
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
  }
  
  .feature h3 {
    color: #007bff;
    margin-bottom: 0.5rem;
  }
  
  .feature p {
    color: #444;
    font-size: 1rem;
  }
  
  .join {
    padding: 4rem 2rem;
    background-color: #edf1f7;
    text-align: center;
  }
  
  .join h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
  }
  
  form input[type="email"] {
    padding: 0.8rem;
    font-size: 1rem;
    width: 250px;
    max-width: 90%;
    border: 1px solid #ccc;
    border-radius: 4px;
    margin-right: 1rem;
  }
  
  form button {
    padding: 0.8rem 1.2rem;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
  }
  
  .footer {
    background-color: #ffffff;
    text-align: center;
    padding: 1.5rem;
    font-size: 0.9rem;
    color: #777;
  }