/* 全局背景：微灰 */
   body {
       background-color: #f4f7f9;
       margin: 0;
       padding: 0;
       overflow-y: scroll !important; /* 强制显示滚动条，防止页面因内容跳动 */
   }

       body.modal-open {
           padding-right: 0 !important;
       }
   /* 顶部 100px 区域 */
   .top-banner-container {
       width: 100%;
       height: 40px;
       background-color: #fff;
       display: flex;
       justify-content: center;
       align-items: center;
       box-shadow: 0 2px 10px rgba(0,0,0,0.05);
       margin-bottom: 20px;
       margin-top: 80px;
   }

   .top-banner-img {
       width: 1200px;
       height: 40px;
       object-fit: cover;
   }

   /* Iframe 设置 */
   #main-detail-iframe {
       width: 100%; /* 填满父级 1120px */
       border: none;
       display: block;
       overflow: hidden;
   }

/* 确保按钮在任何背景下都可见 */
.btn-close-custom {
    background-color: #f8f9fa !important;
    color: #333 !important;
    border: 1px solid #ddd !important;
}