/* PC */
.problem-section {
    padding-top: 47px;
    padding-bottom: 58px;
}

.problem-section .problem-content {
    margin-top: 25px;
    height: 301.15px;

    background-image: url('/images/problem/problem-human.png');
    background-size: auto 100%;
    background-position: left center;
    background-repeat: no-repeat;
}

.problem-section ul.problem-list {
    display: grid;
    grid-template-columns: repeat(2, auto);
    column-gap: 10px;
    row-gap: 18px; 

    justify-content: end;
    align-content: start;
    
    list-style: none;
}

.problem-section li.problem-item {
    background-image: url('/images/problem/problem-union.png');
    background-size: 100% 100%;
    background-position: left center;
    background-repeat: no-repeat;
    position: relative;

    height: 100px;
    width: 368px;
    font-size: 22px;
    line-height: 30px;
    font-weight: bold;

    /* box-shadow: 3px 3px 12px rgba(0, 0, 0, 0.1); */
}

.problem-section .problem-item-image {
    position: absolute;
    height: 100%;
    top: 0;
    right: 0;
}

.problem-section .problem-item-content {
    width: 100%;
    text-align: center;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(calc(-50% + 19px), -50%);
}

.problem-section .arrow-container {
    width: 100%;
    text-align: center;
}

.problem-section .arrow-down {
    margin-top: 16px;
    width: 267px;
    height: 75px;
}

.problem-section .real-case {
    margin-top: 37px;
    background-color: #F2F2F2;
    border-radius: 5px;
    box-shadow: 0px 3px 12px rgba(0, 0, 0, 0.1);

    padding-top: 50px;
    padding-bottom: 20px;
    padding-left: 90.5px;
    padding-right: 90.5px;
    position: relative;
}

.problem-section .case-title {
    font-size: 32px;
    line-height: 43px;
    font-weight: bold;

    white-space: nowrap;
    position: absolute;
    left: 50%;
    top: 0;
    transform: translate(-50%, -18px);
}

.problem-section ul.case-list {
    text-align: center;
    list-style: none;
}

.problem-section ul.case-list li {
    font-size: 16px;
    line-height: 21px;
}

.problem-section .highlight {
    font-weight: bold;
    font-size: 18px;
    line-height: 24px;
}

.problem-section .separator {
    margin-top: 14px;
    margin-bottom: 14px;
    border-top: 1px dashed var(--text-color);
}

/* Mobile */
@media only screen and (max-width: 991px) { 
    .problem-section {
        padding-top: 38px;
        padding-bottom: 40px;
    }
    
    .problem-section .problem-content {
        margin-top: 35px;
        height: 301.15px;
    }
    
    .problem-section ul.problem-list {
        display: grid;
        grid-template-columns: repeat(1, auto);
        row-gap: 12.57px; 
    }
    
    .problem-section li.problem-item {
        height: 62px;
        width: 227.38px;
        font-size: 16px;
        line-height: 22px;
    }
    
    .problem-section .problem-item-content {
        width: 100%;
        text-align: center;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(calc(-50% + 12px), -50%);
    }
    
    .problem-section .arrow-down {
        margin-top: 30.42px;
        width: 171.16px;
        height: 48.08px;
    }
    
    .problem-section .real-case {
        margin-top: 26px;
        border-radius: 3px;
    
        padding-top: 28px;
        padding-bottom: 19px;
        padding-left: 10px;
        padding-right: 10px;
        position: relative;
    }
    
    .problem-section .case-title {
        font-size: 24px;
        line-height: 32px;
        transform: translate(-50%, -15px);
    }
}

@media only screen and (min-width: 768px) and (max-width: 991px) {
    .problem-section ul.problem-list {
        /* display: grid; */
        grid-template-columns: repeat(2, auto);
        /* row-gap: 12.57px;  */
    }
}