body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: rgb(243, 244, 246);
    color: #333;
    line-height: 1.6;
    margin-top: 2rem;
}

main {
    max-width: 1150px;
    margin: 0 auto;
    position: relative;
}

h1,
h2 {
    color: #111;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

h1 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.1rem;
}

ul {
    padding-left: 1.2rem;
    margin: 0.5rem 0;
}

p {
    margin: 0.4rem 0;
}

a {
    text-decoration: none;
    color: #333;
}

footer {
    padding: 0 0 2rem;
    font-size: 0.9rem;
    color: #666;
    float: right;
}

.lang-switch {
    position: absolute;
    top: 0;
    right: 0;
    font-size: 0.9rem;
}

.lang-switch button {
    background: none;
    border: none;
    color: #007aff;
    cursor: pointer;
    margin-left: 0.5rem;
}

[data-lang] {
    display: none;
}

[data-lang].active {
    display: block;
}