:root {
    --bg: #121212;
    --accent: #4a90e2;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #f6f7f9;
        --accent: #2f6fc4;
    }
}

body {
    margin: 0;
    background: var(--bg);
    font-family: system-ui, 'Segoe UI', sans-serif;
}

nav { padding: 1.25rem 16px; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }