:root {
    --bg: #fdfdfd;
    --fg: #222;
    --muted: #666;
    --accent: #0055aa;
    --max-width: 640px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--fg);
    background: var(--bg);
    line-height: 1.7;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1rem;
}

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

header nav {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

main { min-height: 60vh; }

h1 { font-size: 1.5rem; margin-bottom: 1rem; }
h2 { font-size: 1.2rem; margin: 1.5rem 0 0.5rem; }

article.list-item {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0.4rem 0;
}

article.list-item time {
    color: var(--muted);
    font-size: 0.85rem;
    white-space: nowrap;
    margin-left: 1rem;
}

article.page time {
    color: var(--muted);
    font-size: 0.85rem;
    display: block;
    margin-bottom: 1rem;
}

ul { margin-left: 1.5rem; }

footer {
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
    color: var(--muted);
    font-size: 0.85rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1a1a1a;
        --fg: #ddd;
        --muted: #999;
        --accent: #6cacff;
    }
    header nav, footer { border-color: #333; }
}