/* Global layout */
body {
    margin: 0;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    background-color: #ffffff;
    color: #000000;
}

/* Main content */
main {
    flex: 1;
    max-width: 800px;
    margin: 0 auto;
}

/* Headings */
h1 {
    margin-top: 0;
}

h2, h3 {
    margin-top: 1.5rem;
}

/* Links */
a {
    color: #0066cc;
    text-decoration: none;
}

a:hover,
a:focus {
    text-decoration: underline;
}

/* Footer */
footer {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #ccc;
    text-align: center;
    font-size: 14px;
    color: #666;
}