/* Layout */
body {
    margin: 0;
    padding: 3rem 1rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #fdfdfb;
    color: #1e1e1e;
    line-height: 1.75;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

/* Headings */
h1 {
    font-size: 2.65rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    line-height: 1.2;
}

h2 {
    font-size: 1.7rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
    font-weight: 500;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 0.4rem;
}

h3 {
    font-size: 1.3rem;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

/* Text */
p {
    font-size: 1.2rem;
    margin-bottom: 1.6rem;
}

strong {
    font-weight: 600;
}

em {
    font-style: italic;
}

/* Links */
a {
    color: #0067b8;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Lists */
ul {
    padding-left: 1.4rem;
    margin-bottom: 1.5rem;
}

li {
    margin-bottom: 0.6rem;
}

/* Navigation */
nav {
    margin-bottom: 2.5rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 0.8rem;
}

nav a {
    color: #005577;
    text-decoration: none;
    margin-right: 1.25rem;
    font-weight: 500;
}

nav a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    margin-top: 4rem;
    font-size: 0.85rem;
    color: #888;
    border-top: 1px solid #eee;
    padding-top: 2rem;
}

/* Article / Sections */
section,
article {
    margin-bottom: 2.5rem;
}


@media (prefers-color-scheme: dark) {
    body {
        background-color: #111111;
        color: #dddddd;
    }

    a {
        color: #4faaff;
    }

    nav a {
        color: #4faaff;
    }

    nav {
        border-bottom: 1px solid #333;
    }

    footer {
        color: #aaa;
        border-top: 1px solid #333;
    }

    h2 {
        border-bottom: 1px solid #333;
    }
}