body {
    margin: 0;
    padding: 0;
    font-family: 'Noto Sans SC', sans-serif;
    background-color: #c3f2d3;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: #333;
  }
  
  .container {
    background-color: #ffffff;
    border-radius: 15px;
    overflow: hidden;
      padding: 20px 30px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      width: 375px;
      
  }
  
  .header {
      display: flex;
      align-items: center;
  
      margin-bottom: 20px;
  
  }
  
  .logo {
      height: 50px;
      margin-right: 10px;
  }
  
  .title-main {
      font-size: 1.8rem;
      font-weight: bold;
      margin: 0;
      white-space: nowrap;
  }
  
  .title-sub {
      font-size: 1.2rem;
      margin-top: 5px;
      white-space: nowrap;
  
  }
  
  .content {
      display: flex;
      flex-direction: column;
       align-items: center;
  }
  
  
  
  .price-section {
      display: flex;
      flex-direction: column;
      align-items: center;
      margin-bottom: 15px;
  
  }
  
  .price {
      font-size: 3.5rem;
      font-weight: bold;
       margin: 0;
  
  }
  
  .price span {
      font-size: 2rem;
      font-weight: normal;
  }
  
  .discount {
      font-size: 1.2rem;
      background-color: #f2f2f2;
     padding: 5px 10px;
      margin:5px 0;
      border-radius: 5px;
  }
  
  .lessons {
      font-size: 1.1rem;
      margin-top: 5px;
      font-weight: bold;
  }
  
  .image-section {
      margin-bottom: 20px;
  }
  
  .character-image {
       max-width: 200px;
      height: auto;
       display: block;
  }
  
  .time-section{
      display: flex;
      flex-direction: column;
      align-items: center;
      margin-bottom: 15px;
  
  }
  
  .limited-time {
      font-size: 1rem;
  
  }
  
  .discount-time {
      font-size: 1.2rem;
      font-weight: bold;
      display: flex;
      align-items: center;
  
  }
  
  .arrow {
      font-size: 1.5rem;
       margin-left: 5px;
      line-height: 0.8;
  }
  
  .join-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 10px;
  }
  
  .invite{
      font-size: 1rem;
      margin-bottom: 5px;
  }
  .long-press{
     font-size: 0.8rem;
      margin-bottom: 5px;
      text-align: center;
  }
  
  .qr-code-container{
      display: flex;
      flex-direction: column;
      align-items: center;
      margin-bottom: 10px;
       border: 1px solid #f2f2f2;
      padding: 5px;
      border-radius: 5px;
  
  }
  
  .qr-code {
      max-width: 80px;
      height: auto;
      display: block;
  
  }
  
  .action-btn {
    background-color: #ff6347;
    color: white;
    border: none;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 1.2rem;
    border-radius: 8px;
    cursor: pointer;
     font-weight: bold;
      margin-top: 5px;
  }
  
  @media (max-width: 480px) {
      .container {
           width: 90%;
          padding: 15px;
      }
       .title-main {
          font-size: 1.5rem;
       }
  
       .title-sub {
           font-size: 1rem;
       }
       .price {
          font-size: 3rem;
       }
       .price span {
           font-size: 1.8rem;
       }
  
      .discount {
          font-size: 1rem;
      }
  
      .character-image{
          max-width: 150px;
      }
  
      .lessons, .limited-time{
          font-size: 1rem;
      }
  
      .discount-time {
           font-size: 1.1rem;
      }
     .arrow {
         font-size: 1.3rem;
      }
  
      .invite, .long-press {
            font-size: 0.9rem;
      }
      .action-btn {
           font-size: 1.1rem;
      }
  }