html{background-color: transparent;}

.card {
  color: #fff;
  background-color: rgba(0, 0, 0, 0.15); /* 半透明黑色 */
  box-shadow: 0 2px 2px rgba(0,0,0,0.15);
  }
.card strong{color: #fff;}


.textarea:not([rows]) {
    min-height: 4em;
}

    .qrcode-box {
      text-align: center;
      margin: 1rem 0;
    }
    .qrcode-img {
      width: 240px;
      height: auto;
      background: #f5f5f5;
      display: inline-block;
      border-radius: 8px;
      border: 1px solid #eee;
      object-fit: contain;
      cursor: pointer;
    }
    
    
    
    
    .section {
      margin-top: 1rem;
    }
    .domain-title {
      font-size: 2.5rem;
      color: #fff;
      font-weight: bold;
      margin-bottom: 1rem;
      text-align: center;
    }
    .subtitle {
      text-align: center;
      margin-bottom: 2rem;
      color: #fff;
    }
    

    body {
        background-image: url(bg.png);
        background-repeat: no-repeat;
        background-size: cover;

        min-height: 100vh;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    } 
    
    @media (max-width: 600px) {
      .qrcode-img {
        width: 180px;
        height: auto;
      }
      .modal-card {
        width: 96vw;
        min-width: unset;
        max-width: 99vw;
      }
      .section {
        margin-top: 2rem;
        padding: 1.2rem 0.2rem;
        border-radius: 8px;
      }
      .domain-title {
        font-size: 1.3rem;
      }
      .modal-card-head, .modal-card-body {
        padding-left: 0.7rem;
        padding-right: 0.7rem;
      }
    }