body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background: #1e88e5;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin: 0;
}

header nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 1rem;
    font-weight: bold;
}

main {
    padding: 2rem;
    max-width: 900px;
    margin: auto;
}

section {
    background: #fff;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

h2 {
    color: #1e88e5;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

li:last-child {
    border-bottom: none;
}

.btn-viber {
    display: inline-block;
    background: #7360f2;
    color: #fff;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
}

.btn-viber:hover {
    background: #5a4bcf;
}

footer {
    text-align: center;
    padding: 1rem;
    background: #333;
    color: #fff;
}