:root {
    --container: 72rem;
    --space: 1rem;
    --text: #222;
    --muted: #666;
    --border: #ddd;
    --bg: #fff;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

.container {
    width: min(100% - 2rem, var(--container));
    margin-inline: auto;
}

.site-header,
.site-footer {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.site-footer {
    border-top: 1px solid var(--border);
    border-bottom: 0;
    margin-top: 3rem;
}

.site-title {
    display: inline-block;
    font-size: 1.25rem;
    font-weight: bold;
    color: inherit;
    text-decoration: none;
    margin-bottom: 0.75rem;
}

.site-nav,
.site-footer nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.site-nav a,
.site-footer a {
    text-decoration: none;
    color: inherit;
}

main {
    padding: 2rem 0;
}

.page-header {
    margin-bottom: 1.5rem;
}

img {
    max-width: 100%;
    height: auto;
}