body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f0fdf4;
    margin: 0;
    padding: 40px 20px;
    color: #2c3e50;
  }
  
  .container {
    max-width: 850px;
    margin: auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    padding: 30px;
  }
  
  h1 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 10px;
  }
  
  p {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1rem;
  }
  
  .exercise {
    margin-bottom: 40px;
  }
  
  .exercise h2 {
    color: #1e8e54;
    margin-bottom: 10px;
  }
  
  ul {
    list-style: circle;
    padding-left: 20px;
  }
  
  blockquote {
    font-style: italic;
    background-color: #e1f7e9;
    padding: 10px 15px;
    border-left: 5px solid #2ecc71;
    margin-top: 10px;
  }
  
  /* Breathing Circle */
  .breathing-circle {
    width: 100px;
    height: 100px;
    background-color: #a3f7b5;
    border-radius: 50%;
    margin: 20px auto;
    animation: breathe 8s infinite;
  }
  
  @keyframes breathe {
    0% { transform: scale(1); }
    50% { transform: scale(1.5); }
    100% { transform: scale(1); }
  }
  
  #breath-text {
    text-align: center;
    font-size: 1.2rem;
    color: #2d6a4f;
    font-weight: bold;
  }