.sms-box {
    padding: 20px;
}

.sms-form {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.sms_input {
    flex: 1;
    min-width: 0;
    height: 50px;
    border: solid 1px #dddddd;
    font-size: 16px;
    padding-left: 12px;
    box-sizing: border-box;
}

.sms-send-btn {
    font-size: 16px;
    color: #FFFFFF;
    background-color: #c40000;
    width: 110px;
    text-align: center;
    height: 50px;
    line-height: 50px;
    cursor: pointer;
    flex-shrink: 0;
}

.sms-send-btn.disabled {
    background-color: #CCC;
    cursor: not-allowed;
}

.submit-btn {
    width: 100%;
    max-width: 236px;
    font-size: 16px;
    color: #FFFFFF;
    background-color: #3eda87;
    text-align: center;
    height: 50px;
    line-height: 50px;
    cursor: pointer;
}

.sms_submit_box {
    display: flex;
    justify-content: center;
    padding: 10px 20px;
}

/* ✅ 移动端优化：小于 480px 屏幕时 */
@media screen and (max-width: 480px) {
    .layui-layer.layui-layer-page {
        width: 100% !important;
        left: 0 !important;
    }
}