#popup-layer {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    transition: all 0.3s ease-in-out;
    font-family: sans-serif;
}

.popup-content {
    background: white;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.2);
    padding: 10px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

    .popup-content img {
        max-width: 200px;
        height: auto;
        display: block;
    }

.popup-toggle {
    cursor: pointer;
    font-size: 18px;
    color: #666;
    margin-top: 5px;
}

.popup-collapsed {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    border: 1px solid #ccc;
    border-radius: 8px;
    padding: 5px 6px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    cursor: pointer;
}

.vertical-text {
    writing-mode: vertical-rl; /* 从右往左垂直书写 */
    text-orientation: upright; /* 每个字保持正立 */
    font-size: 16px;
    color: #333;
    line-height: 1.2;
    text-align: center;
    letter-spacing: 2px;
    white-space: nowrap;
}

.popup-expand {
    font-size: 14px;
    color: #888;
}

/* 控制展开/缩起 */
#popup-layer.popup-collapsed-mode .popup-content {
    display: none;
}

#popup-layer.popup-collapsed-mode .popup-collapsed {
    display: flex;
}

#popup-layer.popup-expanded .popup-content {
    display: flex;
}

#popup-layer.popup-expanded .popup-collapsed {
    display: none;
}