:root {
    --primary-color: #0084FF;
    --primary-gradient: linear-gradient(90deg, #00A3FF 0%, #0066FF 100%);
    --primary-hover-gradient: linear-gradient(90deg, #52C0FF 0%, #5297FF 100%);
    --secondary-color: #F6F8FF;
    --text-color: #151515;
    --light-text: #686F7E;
    --border-radius: 10px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--secondary-color);
  }
  
  .container {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }
  
  .main-content {
    flex: 1;
    background-color: var(--secondary-color);
    background-image: url("https://static.yximgs.com/udata/pkg/559f6c913534458e87ab238c222550c8.png");
    background-size: 100% auto;
    background-position: top center;
    background-repeat: no-repeat;
    padding: 0 20px 60px;
  }
  
  @media (min-width: 1200px) {
    .main-content {
      padding: 0 360px 60px;
    }
  }
  
  header {
    padding-top: 20px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }
  
  .logo-text {
    display: flex;
    align-items: center;
    font-size: 38px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 38px;
    gap: 20px;
  }
  
  .logo-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
  }
  
  .hero-section {
    position: relative;
    z-index: 1;
  }
  
  .hero-title {
    font-size: 44px;
    font-weight: 500;
    line-height: 52px;
    color: var(--text-color);
    margin-bottom: 7px;
  }
  
  .hero-subtitle {
    font-size: 22px;
    letter-spacing: 7px;
    color: rgba(21, 21, 21, 0.6);
    line-height: 24px;
    margin-bottom: 20px;
  }
  
  .save-button {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 64px;
    min-width: 290px;
    padding: 0 40px;
    background: var(--primary-gradient);
    color: white;
    font-size: 24px;
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.3s ease;
    border: none;
    margin-bottom: 78px;
  }
  
  .save-button:hover {
    background: var(--primary-hover-gradient);
  }
  
  .section-title {
    font-size: 20px;
    font-weight: 500;
    line-height: 28px;
    color: var(--text-color);
    margin-bottom: 24px;
    padding-bottom: 8px;
    background-image: url("https://static.yximgs.com/udata/pkg/f5c2f2432bdb48bc9ebcd15721e052be.png");
    background-size: 60px 12px;
    background-position: left bottom;
    background-repeat: no-repeat;
  }
  
  .download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
  }
  
  .download-card {
    display: flex;
    align-items: center;
    background-color: white;
    border-radius: var(--border-radius);
    padding: 20px 32px;
    box-shadow: var(--box-shadow);
  }
  
  .app-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
  }
  
  .app-info {
    flex: 1;
    margin-left: 16px;
  }
  
  .app-name {
    font-weight: 500;
    font-size: 16px;
    margin-bottom: 8px;
  }
  
  .app-description {
    font-size: 14px;
    color: var(--light-text);
  }
  
  .download-button {
    background-color: rgba(50, 156, 255, 0.16);
    color: var(--primary-color);
    font-size: 16px;
    font-weight: 500;
    padding: 0 20px;
    height: 40px;
    line-height: 40px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
  }
  
  .download-button:hover {
    background-color: var(--primary-color);
    color: white;
  }
  
  .alert {
    background-color: white;
    color: var(--primary-color);
    padding: 15px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 30px;
    box-shadow: var(--box-shadow);
    line-height: 1.6;
    border: 1px solid rgba(0, 132, 255, 0.2);
  }
  
  .highlight {
    background-color: rgba(0, 132, 255, 0.1);
    color: var(--primary-color);
    padding: 0 4px;
    font-weight: bold;
  }
  
  .installation-guide {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 25px;
    margin-bottom: 40px;
    box-shadow: var(--box-shadow);
  }
  
  .guide-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
  }
  
  .guide-tab {
    padding: 8px 15px;
    background-color: rgba(50, 156, 255, 0.16);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--primary-color);
  }
  
  .guide-tab.active {
    background-color: var(--primary-color);
    color: white;
  }
  
  .guide-content {
    display: none;
  }
  
  .guide-content.active {
    display: block;
  }
  
  footer {
    background-color: white;
    padding: 20px;
    text-align: center;
    color: rgba(0, 0, 0, 0.4);
    font-size: 12px;
    line-height: 1.6;
  }
  
  @media (max-width: 768px) {
    header {
      display: flex;
      justify-content: center;
      align-items: center;
      width: 100%;
      margin-top: 20px;
    }
    
    .logo-text {
      font-size: 24px;
      text-align: center;
      margin-bottom: 24px;
    }
    
    .hero-title {
      font-size: 22px;
      line-height: 26px;
      text-align: center;
      width: 100%;
    }
    
    .hero-subtitle {
      font-size: 12px;
      letter-spacing: 3px;
      text-align: center;
      width: 100%;
    }
    
    .hero-section {
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    
    .save-button {
      height: 50px;
      font-size: 20px;
      min-width: 234px;
      padding: 0 20px;
      margin-bottom: 40px;
    }
    
    .download-grid {
      grid-template-columns: 1fr;
    }
    
    .download-card {
      padding: 16px;
    }
  }
  
  .modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.8);
  }
  
  .modal-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    padding: 20px;
    box-sizing: border-box;
    overflow-y: auto;
  }
  
  .modal img.preview-image {
    max-height: 60vh;
    max-width: 90%;
    border-radius: 20px;
    pointer-events: auto;
    user-select: auto;
    object-fit: contain;
  }
  
  .close-modal {
    position: absolute;
    top: 20px;
    right: 20px;
    color: white;
    font-size: 30px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
  }
  
  .custom-icon {
    width: 50px;
    height: 50px;
    background-color: #999;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: bold;
    padding: 10px;
    box-sizing: border-box;
  }

  @media (max-width: 768px) {
    .custom-icon {
      width: 38px;
      height: 38px;
      font-size: 18px;
      padding: 8px;
    }
  }

  .custom-icon svg {
    width: 100%;
    height: 100%;
    fill: white;
  }
  
  
  
  
  
  
  
  
  .modal {
display: none;
position: fixed;
z-index: 1000;
left: 0;
top: 0;
width: 100%;
height: 100%;
overflow: auto;
background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
background-color: #fefefe;
margin: 15% auto;
padding: 20px;
border: 1px solid #888;
width: 80%;
max-width: 300px;
text-align: center;
}

.close-modal {
color: #aaa;
float: right;
font-size: 28px;
font-weight: bold;
cursor: pointer;
}

.close-modal:hover,
.close-modal:focus {
color: black;
text-decoration: none;
cursor: pointer;
}

.download-option {
margin: 10px;
padding: 10px 20px;
background-color: #4CAF50;
color: white;
border: none;
cursor: pointer;
}

.download-option:hover {
background-color: #45a049;
}