/* case/pages/scan/scan.wxss */
.page {
    position: relative;
    height: 100vh;
}
.btn {
    position: absolute;
    bottom: 100rpx;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1; /* 确保按钮在最上层 */
}
/* 新增四个角的拖拽手柄样式 */
.resize-handle {
    position: absolute;
    width: 20px;
    height: 20px;
    background: #fff;
    border: 2px solid #333;
    z-index: 10;
}
/* 左上角 */
.resize-handle.tl { top: -10px; left: -10px; cursor: nw-resize; }
/* 右上角 */
.resize-handle.tr { top: -10px; right: -10px; cursor: ne-resize; }
/* 左下角 */
.resize-handle.bl { bottom: -10px; left: -10px; cursor: sw-resize; }
/* 右下角 */
.resize-handle.br { bottom: -10px; right: -10px; cursor: se-resize; }