body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f8f8f8;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 60px auto;
    background: #ffffff;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.05);
}

h1 {
    margin-top: 0;
    font-size: 28px;
}

h2 {
    margin-top: 30px;
    font-size: 20px;
}

h3 {
    margin-top: 20px;
    font-size: 16px;
}

p {
    margin: 12px 0;
}

ul {
    margin: 10px 0 10px 20px;
}

.footer {
    margin-top: 40px;
    font-size: 14px;
    color: #777;
}

a {
    color: #007aff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}