/* 問題セクション */
#problem {
    background-color: #f9f9f9;
    padding: 80px 0;
    text-align: center;
}

#problem .container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 15px;
}

#problem .section-title {
    font-size: 28px;
    color: #333;
    margin: 0 auto 30px;
    position: relative;
    padding-bottom: 15px;
    text-align: center;
    width: 100%;
    max-width: 800px;
}

#problem .section-title:after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: #ff4d4f;
    margin: 15px auto 0;
}

/* 問題パネル */
#problem .problem-panel {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
}

/* 問題リスト */
#problem .problem-list {
    list-style: none;
    padding: 0;
    margin: 0 0 40px;
    text-align: left;
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

#problem .problem-item {
    padding: 15px 20px;
    background: #fdfdfd;
    border-radius: 8px;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    border: 1px solid #eee;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: all 0.2s ease;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}



/* CTAテキスト */
#problem .problem-cta {
    font-size: 20px;
    font-weight: 700;
    color: #333;
    margin: 40px 0 30px;
    text-align: center;
}

/* ボタン */
#problem .problem-actions {
    margin-top: 30px;
    text-align: center;
}

#problem .btn-trial {
    display: inline-block;
    background: #ff4d4f;
    color: white;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 16px;
    transition: all 0.3s;
}

#problem .btn-trial:hover {
    background: #ff6b6b;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 77, 79, 0.3);
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    #problem {
        padding: 60px 0;
    }
    
    #problem .problem-panel {
        padding: 25px 20px;
    }
    
    #problem .problem-list {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    #problem .problem-cta {
        font-size: 18px;
        margin: 30px 0 25px;
    }
}