.problem-container {
    background: #ffffff;
    border-radius: 24px;
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    gap: 0;
    box-shadow: 0 4px 4px rgba(0, 0, 0, 0.25);
    height: 352px;
    overflow: hidden;
    width: 100%;
}

.problem-content {
    flex: 1;
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.problem-badge {
    background: #FF5714;
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    width: fit-content;
}

.problem-title {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 16px;
    line-height: 1.3;
}

.problem-text {
    font-size: 16px;
    color: #4a4a4a;
    line-height: 1.6;
    margin: 0;
}

.problem-image {
    flex: 1;
    min-width: 40%;
    background-image: url('../imgs/problem-section/ghost-shop.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 352px;
}

.problem-image img {
    display: none;
}

.problem-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.problem-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 40px 24px 32px;
    box-shadow: 0 4px 4px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-height: 300px;
}

.problem-card-icon {
    font-size: 48px;
    color: #FF5714;
    margin-bottom: 24px;
}

.problem-card-title {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 12px;
    line-height: 1.4;
}

.problem-card-description {
    font-size: 13px;
    color: #666666;
    line-height: 1.5;
    margin-bottom: auto;
    flex: 1;
}

.problem-card-source {
    font-size: 11px;
    font-weight: 700;
    color: #1a1a1a;
    margin-top: 20px;
}

@media (max-width: 992px) {
    .problem-container {
        flex-direction: column;
        height: auto;
        min-height: 500px;
    }

    .problem-content {
        padding: 40px;
        text-align: center;
        align-items: center;
    }

    .problem-title {
        font-size: 24px;
    }

    .problem-image {
        min-height: 300px;
    }

    .problem-cards {
        grid-template-columns: repeat(2, 1fr);
        margin-top: 0;
    }

    .problem-card {
        min-height: 300px;
    }
}

@media (max-width: 1300px) {
    .problem-section {
        padding: 60px 8%;
    }

    .problem-container {
        min-height: 450px;
    }

    .problem-content {
        padding: 30px 24px;
    }

    .problem-title {
        font-size: 22px;
    }

    .problem-text {
        font-size: 14px;
    }

    .problem-badge {
        font-size: 11px;
        padding: 6px 16px;
    }

    .problem-image {
        min-height: 250px;
    }

    .problem-cards {
        grid-template-columns: 1fr 1fr;
        margin-top: 40px;
        gap: 20px;
    }

    .problem-card {
        min-height: auto;
        padding: 32px 20px 24px;
    }

    .problem-card-icon {
        font-size: 40px;
        margin-bottom: 20px;
    }

    .problem-card-title {
        font-size: 16px;
        margin-bottom: 10px;
    }

    .problem-card-description {
        font-size: 13px;
        margin-bottom: 12px;
    }

    .problem-card-source {
        font-size: 11px;
    }
}

@media (max-width: 550px) {
    .problem-cards {
        grid-template-columns: 1fr;
        margin-top: 0;
        gap: 20px;
    }
}