.flow-section {
    padding: 80px 0;
}

.flow-intro {
    text-align: center;
    margin-bottom: 60px;
    line-height: 1.8;
}

.flow-timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.flow-timeline::before {
    content: '';
    position: absolute;
    width: 6px;
    background-color: #0056b3;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
    border-radius: 3px;
}

.flow-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
    margin-bottom: 30px;
}

.flow-item::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 25px;
    background-color: white;
    border: 4px solid #0056b3;
    top: 15px;
    border-radius: 50%;
    z-index: 1;
}

.flow-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.flow-item:nth-child(even) {
    left: 50%;
    text-align: left;
}

.flow-item:nth-child(odd)::after {
    right: -16px;
}

.flow-item:nth-child(even)::after {
    left: -16px;
}

.flow-content {
    padding: 20px 30px;
    background-color: white;
    position: relative;
    border-radius: 6px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.flow-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background-color: #0056b3;
    color: white;
    border-radius: 50%;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
}

.flow-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #0056b3;
}

.flow-description {
    line-height: 1.8;
    margin-bottom: 15px;
}

.flow-point {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    margin-top: 15px;
}

.flow-point h4 {
    font-size: 16px;
    margin-bottom: 10px;
    color: #0056b3;
}

.flow-point ul {
    margin: 0;
    padding-left: 20px;
}

.flow-point li {
    margin-bottom: 5px;
}

.flow-image {
    margin-top: 15px;
    text-align: center;
}

.flow-image img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .flow-timeline::before {
        left: 31px;
    }
    
    .flow-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
        text-align: left;
    }
    
    .flow-item:nth-child(odd) {
        left: 0;
        text-align: left;
    }
    
    .flow-item:nth-child(even) {
        left: 0;
    }
    
    .flow-item:nth-child(odd)::after {
        left: 15px;
        right: auto;
    }
    
    .flow-item:nth-child(even)::after {
        left: 15px;
    }
}