* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
 
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      color: #1a1a2e;
      line-height: 1.6;
    }
 
    header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1.5rem 2rem;
      max-width: 1100px;
      margin: 0 auto;
    }
 
    .logo {
      font-weight: 700;
      font-size: 1.25rem;
    }
 
    nav a {
      margin-left: 1.5rem;
      text-decoration: none;
      color: #444;
      font-size: 0.95rem;
    }
 
    nav a:hover {
      color: #6c5ce7;
    }
 
    .hero {
      text-align: center;
      padding: 5rem 2rem;
      background: linear-gradient(135deg, #6c5ce7, #a29bfe);
      color: #fff;
    }
 
    .hero h1 {
      font-size: 2.75rem;
      margin-bottom: 1rem;
    }
 
    .hero p {
      font-size: 1.15rem;
      max-width: 500px;
      margin: 0 auto 2rem;
      opacity: 0.95;
    }
 
    .btn {
      display: inline-block;
      background: #fff;
      color: #6c5ce7;
      padding: 0.85rem 2rem;
      border-radius: 6px;
      text-decoration: none;
      font-weight: 600;
      transition: transform 0.15s;
    }
 
    .btn:hover {
      transform: translateY(-2px);
    }
 
    .features {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 2rem;
      max-width: 1100px;
      margin: 4rem auto;
      padding: 0 2rem;
    }
 
    .card {
      padding: 2rem;
      border: 1px solid #eee;
      border-radius: 10px;
      text-align: center;
    }
 
    .card h3 {
      margin-bottom: 0.5rem;
    }
 
    .card p {
      color: #666;
      font-size: 0.95rem;
    }
 
    footer {
      text-align: center;
      padding: 2rem;
      background: #1a1a2e;
      color: #aaa;
      font-size: 0.9rem;
    }