.title {
    text-align: center;
    margin-bottom: 0.2em;
}

.subtitle {
    text-align: center;
    font-size: medium;
    font-weight: bold;
    margin-top: 0;
}

body {
    line-height: 1.6;
    font-size: 18px;
    padding: 0 10px;
    margin: 60px auto;
    max-width: 700px;
    background-color: black;
    color: white;
}

h2,
h2,
h3 {
    line-height: 1.2;
}

h2 {
    font-style: italic;
    font-size: 18px;
}

a:link,
a:visited {
    color: green;
}

code,
.code {
    font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
    font-size: 1.125rem;
    line-height: 1.6;
    padding: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin: 0;
    font-size: 85%;
    background-color: rgba(0, 0, 0, 0.04);
    border-radius: 3px;
}

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 30px;
    background: #222;
    color: #fff;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
    font-size: 1.5rem;
    transition: background 0.2s, color 0.2s;
}

.theme-toggle.light {
    background: #eee;
    color: #222;
}