:root {
    color-scheme: light dark;
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #1f2933;
    --muted: #6b7683;
    --accent: #0a84ff;
    --border: #e2e6ea;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f1418;
        --card: #171d22;
        --text: #e7ecf0;
        --muted: #9aa5b1;
        --accent: #4aa8ff;
        --border: #262e35;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 32px 16px 64px;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

main {
    max-width: 760px;
    margin: 0 auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 40px 32px;
}

h1 { font-size: 28px; margin: 0 0 4px; line-height: 1.25; }
h2 { font-size: 19px; margin: 36px 0 10px; }
h3 { font-size: 16px; margin: 22px 0 6px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }
a { color: var(--accent); }

.lead { font-size: 17px; color: var(--muted); margin: 0 0 8px; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 8px; }

/* Barra di navigazione fra le tre pagine del sito. */
.sitenav {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding-bottom: 14px;
    margin-bottom: 22px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    font-weight: 600;
}

.sitenav a { text-decoration: none; }
.sitenav a[aria-current="page"] { color: var(--muted); }

.langbar { display: flex; gap: 8px; margin: 20px 0 4px; }

.langbar button {
    font: inherit;
    font-size: 14px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--muted);
    cursor: pointer;
}

.langbar button[aria-pressed="true"] {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 15px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }

.cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin: 16px 0 4px; }

.cards div {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 16px;
}

.cards strong { display: block; margin-bottom: 4px; }
.cards p { margin: 0; font-size: 15px; color: var(--muted); }

footer {
    max-width: 760px;
    margin: 20px auto 0;
    color: var(--muted);
    font-size: 13px;
    text-align: center;
}