* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.header {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.site-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.nav {
    text-align: center;
}

.nav-list {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #3498db;
}

.main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

.app-card {
    background-color: white;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.app-card:hover {
    transform: translateY(-5px);
}

.app-icon img {
    width: 120px;
    height: 120px;
    border-radius: 20px;
    margin-bottom: 1rem;
}

.app-title {
    font-size: 1.5rem;
    color: #2c3e50;
}

.privacy-section {
    background-color: white;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.section-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.policy-date {
    color: #7f8c8d;
    margin-bottom: 2rem;
}

.policy-content h3 {
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem 0;
    color: #2c3e50;
}

.policy-content p {
    margin-bottom: 1rem;
    color: #555;
}

.footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
}

.copyright {
    margin-bottom: 0.5rem;
}

.icp-info {
    font-size: 0.9rem;
    color: #bdc3c7;
}

@media (max-width: 768px) {
    .site-title {
        font-size: 2rem;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 1rem;
    }
    
    .app-grid {
        grid-template-columns: 1fr;
    }
    
    .main {
        padding: 1rem;
    }
}