* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  }

  body {
    line-height: 1.6;
    color: #111;
    background: #fff;
  }

  header {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #eee;
  }

  header h1 {
    font-size: 1.2rem;
    font-weight: 500;
  }

  nav a {
    color: #555;
    margin-left: 1.5rem;
    text-decoration: none;
    font-size: 0.9rem;
  }

  nav a:hover {
    color: #000;
  }

  .hero {
    min-height: 80vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
  }

  .hero h2 {
    font-size: 2.2rem;
    font-weight: 500;
    margin-bottom: 1rem;
  }

  .hero p {
    color: #666;
    margin-bottom: 2rem;
    font-size: 1rem;
  }

  .btn {
    background: #111;
    color: #fff;
    padding: 0.6rem 1.4rem;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    border-radius: 20px;
    transition: opacity 0.2s ease;
  }

  .btn:hover {
    opacity: 0.7;
  }

  .features {
    padding: 4rem 2rem;
    max-width: 900px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
  }

  .feature {
    text-align: left;
  }

  .feature h3 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
  }

  .feature p {
    font-size: 0.9rem;
    color: #666;
  }

  .feature ul {
    list-style: none;
    padding-left: 0;
    margin: 0.5rem 0 0 0;
  }

  .feature li {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.25rem;
  }

  footer {
    text-align: center;
    padding: 2rem 1rem;
    font-size: 0.8rem;
    color: #777;
    border-top: 1px solid #eee;
  }