.header {
    background-color: #ffffff;
    border-bottom: 2px solid #e1f0fa;
    padding: 20px;
    text-align: center;
}

.header-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #1a65a4;
    text-decoration: none;
    letter-spacing: 1px;
}

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #f4f9fc;
            color: #2c3e50;
            padding: 40px 20px;
            margin: 0;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        h2, h3 {
            text-align: center;
            color: #1a65a4;
            margin-bottom: 30px;
        }

        .materials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
        }

.store-introduction-text {
    max-width: 768px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    line-height: 1.6;
    text-align: justify;
}

.breadcrumbs {
    text-align: center;
    font-size: 0.85rem;
    color: #7f8c8d;
    margin-bottom: 25px;
}

.breadcrumbs a {
    color: #3a7cb5;
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumbs a:hover {
    color: #0f4c81;
    text-decoration: underline;
}

        .material-card {
            background: #ffffff;
            border: 2px solid #e1f0fa;
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 4px 6px rgba(26, 101, 164, 0.05);
        }

        .material-link {
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 25px 15px;
            min-height: 70px;
            text-decoration: none;
            color: #3a7cb5;
            font-weight: 600;
            font-size: 1.1rem;
            transition: color 0.3s ease;
        }

        .material-card:hover {
            transform: translateY(-5px);
            border-color: #a4d3f5;
            box-shadow: 0 8px 15px rgba(26, 101, 164, 0.15);
            background-color: #f0f7fd;
        }

        .material-card:hover .material-link {
            color: #0f4c81;
        }

.footer {
    background-color: #ffffff;
    border-top: 2px solid #e1f0fa;
    padding: 15px;
    text-align: center;
    font-size: 0.8rem;
    color: #95a5a6;
    margin-top: 40px;
}