body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background-color: #fff;
    padding: 30px 40px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 100%;
    text-align: center;
}

h1 {
    color: #2c3e50;
    margin-bottom: 20px;
}

p {
    font-size: 1.1em;
    line-height: 1.6;
    color: #555;
}

ul {
    list-style-type: none;
    padding: 0;
    margin-top: 20px;
}

li {
    margin: 15px 0;
}

a {
    text-decoration: none;
    color: #3498db;
    font-weight: bold;
    font-size: 1.2em;
    transition: color 0.3s ease;
}

a:hover {
    color: #2980b9;
}

.back-link {
    display: inline-block;
    margin-top: 25px;
    font-size: 1em;
    color: #7f8c8d;
}

.back-link:hover {
    color: #34495e;
}