/* ポータルサイトセクション - portal-sites.css */

.portal-sites-section {
    background-color: #ffffff;
    padding: 40px 0;
    text-align: center;
}

.portal-sites-header {
    margin-bottom: 30px;
}

.portal-sites-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #2C3E50;
    margin-bottom: 10px;
}

.portal-sites-subtitle {
    font-size: 1rem;
    color: #666;
    margin: 0 auto;
}

/* ロゴコンテナ - 3つ横並び */
.portal-logos-container {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: nowrap;
    max-width: 800px;
    margin: 0 auto;
}

/* ロゴボックス - シンプル化 */
.portal-logo-box {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    flex: 1;
    max-width: 220px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.portal-logo-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}

.portal-logo-box img {
    max-width: 90%;
    max-height: 50px;
    object-fit: contain;
}

/* レスポンシブ対応 - モバイルでも横並び */
@media (max-width: 768px) {
    .portal-sites-section {
        padding: 30px 0;
    }
    
    .portal-sites-title {
        font-size: 1.5rem;
    }
    
    .portal-sites-subtitle {
        font-size: 0.9rem;
    }
    
    .portal-logos-container {
        gap: 15px;
        max-width: 100%;
    }
    
    .portal-logo-box {
        max-width: 180px;
        height: 70px;
        padding: 15px;
    }
    
    .portal-logo-box img {
        max-height: 40px;
    }
}

@media (max-width: 480px) {
    .portal-logos-container {
        gap: 10px;
    }
    
    .portal-logo-box {
        max-width: 150px;
        height: 60px;
        padding: 10px;
    }
    
    .portal-logo-box img {
        max-height: 35px;
    }
}