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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 16px;
    color: #001090;
    text-align: center;
    background: #ffffff;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    padding: 40px 20px 30px;
}

.logo {
    height: 80px;
    width: auto;
    max-width: 100%;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.navigation {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 15px;
    padding: 20px 0 40px;
    margin-bottom: 20px;
}

.nav-link {
    color: #001090;
    text-decoration: none;
    font-weight: 500;
    font-size: 18px;
    padding: 8px 5px;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.nav-link:hover {
    color: #d50900;
    text-decoration: none;
}

.nav-separator {
    color: #001090;
    font-weight: 400;
    opacity: 0.6;
}

.network-map {
    width: 100%;
    padding: 0 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
}

.network-map img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

@media (max-width: 1024px) {
    .container {
        padding: 15px;
    }
    
    header {
        padding: 30px 15px 20px;
    }
    
    .logo {
        height: 70px;
    }
    
    .navigation {
        gap: 12px;
        padding: 15px 0 30px;
    }
    
    .nav-link {
        font-size: 17px;
        padding: 6px 4px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header {
        padding: 25px 10px 15px;
    }
    
    .logo {
        height: 60px;
    }
    
    .navigation {
        flex-direction: column;
        gap: 8px;
        padding: 10px 0 25px;
    }
    
    .nav-separator {
        display: none;
    }
    
    .nav-link {
        font-size: 16px;
        padding: 10px 15px;
        background: #f5f7fa;
        border-radius: 8px;
        width: 280px;
        max-width: 90%;
        text-align: center;
    }
    
    .network-map {
        padding: 0 5px;
    }
    
    .network-map img {
        max-height: 75vh;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 8px;
    }
    
    header {
        padding: 20px 5px 10px;
    }
    
    .logo {
        height: 50px;
    }
    
    .nav-link {
        font-size: 15px;
        padding: 8px 12px;
        width: 250px;
    }
    
    .network-map img {
        max-height: 65vh;
    }
}

@media (min-width: 1920px) {
    .container {
        max-width: 1800px;
    }
    
    .logo {
        height: 100px;
    }
    
    .nav-link {
        font-size: 20px;
    }
}