:root {
      --cyan: hsl(179, 62%, 43%);
      --bright-yellow: hsl(71, 73%, 54%);
      --light-gray: hsl(204, 43%, 93%);
      --grayish-blue: hsl(218, 22%, 67%);
      --white: hsl(0, 0%, 100%);
    }
    
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: 'Karla', sans-serif;
      font-size: 16px;
      background-color: var(--light-gray);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 70px 30px;
    }
    
    .container {
      max-width: 635px;
      margin: 0 auto;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    }
    
    .card {
      padding: 30px;
    }
    
    .community {
      background-color: var(--white);
    }
    
    .community h1 {
      color: var(--cyan);
      font-size: 1.5rem;
      margin-bottom: 25px;
    }
    
    .community h2 {
      color: var(--bright-yellow);
      font-size: 1.1rem;
      margin-bottom: 20px;
    }
    
    .community p {
      color: var(--grayish-blue);
      line-height: 1.6;
    }
    
    .subscription {
      background-color: var(--cyan);
      color: var(--white);
    }
    
    .subscription h2 {
      font-size: 1.2rem;
      margin-bottom: 20px;
    }
    
    .price {
      display: flex;
      align-items: center;
      margin-bottom: 10px;
    }
    
    .price-amount {
      font-size: 2rem;
      font-weight: 700;
      margin-right: 15px;
    }
    
    .price-frequency {
      opacity: 0.7;
    }
    
    .subscription p {
      margin-bottom: 30px;
    }
    
    .btn {
      display: block;
      width: 100%;
      padding: 15px;
      background-color: var(--bright-yellow);
      color: var(--white);
      font-weight: 700;
      border: none;
      border-radius: 5px;
      box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
      cursor: pointer;
      transition: opacity 0.3s;
    }
    
    .btn:hover {
      opacity: 0.9;
    }
    
    .why-us {
      background-color: hsl(179, 62%, 47%);
      color: var(--white);
    }
    
    .why-us h2 {
      font-size: 1.2rem;
      margin-bottom: 20px;
    }
    
    .why-us ul {
      list-style: none;
      opacity: 0.8;
      line-height: 1.4;
    }
    
    .why-us li {
      margin-bottom: 3px;
    }
    
    footer {
      margin-top: 30px;
    }
    
    .attribution {
      font-size: 11px;
      text-align: center;
    }
    
    .attribution a {
        font-weight: bold;
      background: linear-gradient(to right, black,hsl(179, 62%, 43%),hsl(218, 22%, 67%));
      -webkit-background-clip:text ;
      -webkit-text-fill-color: transparent;
    }
    
    @media (min-width: 640px) {
      body {
        padding: 100px 30px;
      }
      
      .grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
      }
      
      .community {
        grid-column: span 2;
        padding: 40px;
      }
      
      .subscription {
        padding: 40px;
      }
      
      .why-us {
        padding: 40px;
      }
    }