/* 底部弹出DIV弹窗 */
     
     /* * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            height: 1500px;
            font-family: system-ui, sans-serif;
        } */

        /* 遮罩层 */
        .mask-layer {
            position: fixed;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.4);
            z-index: 9998;
            display: none;
        }

        /* 底部弹窗容器 */
        .bottom-popup {
            position: fixed;
            left: 50%;
            bottom: 0;
            transform: translate(-50%, 100%);
            width: 90%;
            max-width: 680px;
            background: #ffffff;
            border-radius: 16px 16px 0 0;
            z-index: 9999;
            transition: transform 0.4s ease-out;
            padding: 24px;
        }
        /* 弹出激活状态 */
        .bottom-popup.show {
            transform: translate(-50%, 0);
        }

        /* 标题栏 */
        .popup-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 18px;
        }
        .popup-title {
            font-size: 22px;
            font-weight: bold;
            color: #333;
        }
        .close-btn {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            border: 1px solid #ddd;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 20px;
            color: #666;
        }
        .close-btn:hover {
            background-color: #f2f2f2;
        }

        /* 内容区域：左图右文字 */
        .popup-content-wrap {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .popup-img {
            width: 140px;
            height: 140px;
            object-fit: cover;
            border-radius: 8px;
            flex-shrink: 0;
        }
        .popup-text {
            flex: 1;
            font-size: 22px;
            line-height: 1.8;
            color: #444;
        }

        /* 平板适配 */
        @media (min-width: 521px) and (max-width: 1024px), (min-width: 521px) and (pointer: coarse) {
            .bottom-popup {
                box-sizing: border-box;
                width: calc(100% - 32px);
                max-width: 728px;
                max-height: calc(100vh - 32px);
                max-height: calc(100dvh - env(safe-area-inset-top, 0px) - 16px);
                bottom: env(safe-area-inset-bottom, 0px);
                overflow-y: auto;
                -webkit-overflow-scrolling: touch;
            }
            .close-btn {
                width: 44px;
                height: 44px;
                flex-shrink: 0;
            }
        }

        /* 移动端适配 */
        @media(max-width: 520px){
            .popup-content-wrap {
                flex-direction: column;
            }
            .popup-img {
                width: 100%;
                height: auto;
            }
        }