.doc-back {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
      text-decoration: none;
      margin-bottom: 20px;
      font-weight: 500;
      transition: var(--transition);
      font-size: 1rem;
    }
    
    .doc-back:hover {
      text-decoration: underline;
      color: var(--secondary);
    }
    
    .doc-back i {
      font-size: 0.9rem;
    }
    
    .hero-container {
      display: flex;
      justify-content: center;
      align-items: flex-end;
      gap: 15px;
      margin: 30px 0;
      flex-wrap: wrap;
    }
     
     .hero-card {
       background: var(--card-bg);
       border-radius: var(--radius);
       overflow: hidden;
       box-shadow: var(--shadow);
       transition: var(--transition);
       text-align: center;
       padding: 15px;
       border: 1px solid var(--border-color);
       position: relative;
       cursor: pointer;
     }
     
     .hero-card:hover {
       transform: translateY(-5px);
     }
     
     .hero-card.first {
       order: 2;
       width: 160px;
       z-index: 3;
     }
     
     .hero-card.second {
       order: 1;
       width: 140px;
       z-index: 2;
     }
     
     .hero-card.third {
       order: 3;
       width: 130px;
       z-index: 1;
     }
     
     .hero-avatar-container {
       position: relative;
       display: inline-block;
       margin-bottom: 15px;
     }
     
     .hero-avatar {
       border-radius: 50%;
       object-fit: cover;
       border: 3px solid var(--primary);
       display: block;
     }
     
     .hero-card.first .hero-avatar {
       width: 80px;
       height: 80px;
     }
     
     .hero-card.second .hero-avatar {
       width: 75px;
       height: 75px;
     }
     
     .hero-card.third .hero-avatar {
       width: 70px;
       height: 70px;
     }
     
     .hero-name {
       font-size: 1.1rem;
       font-weight: bold;
       margin-bottom: 5px;
       color: var(--text-color);
     }
     
     .hero-amount {
       color: var(--primary);
       font-weight: bold;
     }
     
     .hero-medal {
       position: absolute;
       bottom: -5px;
       right: -5px;
       z-index: 10;
     }
     
     .hero-card.first .hero-medal {
       width: 46px;
       height: 46px;
     }
     
     .hero-card.second .hero-medal {
       width: 36px;
       height: 36px;
     }
     
     .hero-card.third .hero-medal {
       width: 32px;
       height: 32px;
     }
    
    .donor-container {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      gap: 20px;
      margin: 30px 0;
    }
    
    .donor-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: var(--transition);
      text-align: center;
      padding: 20px;
      border: 1px solid var(--border-color);
      position: relative;
      cursor: pointer;
    }
    
    .donor-card:hover {
      transform: translateY(-5px);
    }
    
    .donor-avatar {
      width: 80px;
      height: 80px;
      border-radius: 50%;
      margin: 0 auto 15px;
      object-fit: cover;
      border: 3px solid var(--primary);
    }
    
    .donor-name {
      font-size: 1.1rem;
      font-weight: bold;
      margin-bottom: 5px;
      color: var(--text-color);
    }
    
    .donor-amount {
      color: var(--primary);
      font-weight: bold;
    }
    
    .qrcode-container {
      display: flex;
      justify-content: center;
      align-items: center;
      margin: 30px auto;
      width: 100%;
      max-width: 30%;
    }
    
    .qrcode-item {
      text-align: center;
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 10px;
      box-shadow: var(--shadow);
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }
     
    .qrcode-item:hover {
      transform: translateY(-5px);
    }
     
    .qrcode-img {
      width: 100%;
      height: auto;
      margin-bottom: 10px;
      border-radius: 8px;
    }
    
    .qrcode-title {
      font-size: 1rem;
      font-weight: bold;
      color: var(--primary);
      margin-top: 5px;
    }
    
    .header-box {
      background-color: var(--card-bg);
      border-radius: 8px;
      box-shadow: var(--shadow);
      margin-bottom: 30px;
      overflow: hidden;
      border: 1px solid var(--border-color);
    }
    
    .main-title {
      font-size: 2.2rem;
      color: var(--primary);
      text-align: center;
      padding: 25px 0;
      margin: 0;
    }
    
    .notice-banner {
      padding: 5px 20px 15px;
      background-color: var(--card-bg);
    }
    
    .notice-banner p {
      margin: 0;
      color: var(--gray);
      font-size: 1rem;
      line-height: 1.6;
      text-align: center;
    }
    
    .donate-title-container {
      text-align: center;
      margin: 30px 0;
    }
    
    .donate-title {
      font-size: 1.8rem;
      color: var(--primary);
      margin-bottom: 10px;
    }
    
    .donate-subtitle {
      color: var(--gray);
      font-size: 1rem;
      max-width: 600px;
      margin: 0 auto;
    }
    
    .section-title {
      font-size: 1.5rem;
      color: var(--primary);
      margin: 40px 0 20px;
      text-align: center;
      position: relative;
    }
    
    .section-title::after {
      content: '';
      display: block;
      width: 50px;
      height: 3px;
      background-color: var(--primary);
      margin: 10px auto 0;
    }

    .tip-box {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 20px;
      margin: 30px 0;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow);
    }

    .tip-title {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 15px;
    }

    .tip-title i {
      color: var(--primary);
      font-size: 1.4rem;
    }

    .tip-title h3 {
      margin: 0;
      font-size: 1.2rem;
      color: var(--text-color);
    }