/* La guida sul guscio del redesign (prefisso `gu-`). La carica solo guida/layout. */
.gu-search { display: flex; gap: 8px; }
.gu-search .mt-input { flex: 1; }
.gu-h2 { font-family: var(--font-display); font-weight: 600; font-size: 26px; letter-spacing: -0.02em; line-height: 1.15; }

/* Le domande: una scheda ciascuna, il segno + / – a destra (prototipo «Guida»). */
.gu-faq { display: flex; flex-direction: column; gap: 8px; }
.gu-faq .gu-h2 { margin-bottom: 8px; }
.gu-q { background: var(--mt-n-0); border: 1px solid var(--border-subtle); border-radius: 12px; box-shadow: var(--shadow-1); }
.gu-q summary { list-style: none; cursor: pointer; padding: 20px 24px; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.gu-q summary::-webkit-details-marker { display: none; }
.gu-q summary span { font-family: var(--font-display); font-weight: 600; font-size: 18px; letter-spacing: -0.01em; }
.gu-q summary i { width: 28px; height: 28px; flex: none; border-radius: 4px; background: var(--mt-n-100); color: var(--fg-2); display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-style: normal; font-size: 16px; transition: all 180ms; }
.gu-q summary i::before { content: '+'; }
.gu-q[open] summary i { background: var(--accent); color: var(--on-accent); }
.gu-q[open] summary i::before { content: '–'; }
.gu-q summary:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: -2px; border-radius: 12px; }
.gu-a { padding: 0 24px 22px; font-size: 16px; line-height: 1.6; color: var(--fg-2); max-width: 720px; text-wrap: pretty; }

/* Le guide per argomento. */
.gu-cats { margin-top: 32px; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 16px; }
.gu-cat { padding: 22px; display: flex; flex-direction: column; gap: 6px; min-height: 140px; }
.mt .gu-item { padding: 20px 24px; display: flex; flex-direction: column; gap: 6px; }
.gu-item h3 { font-family: var(--font-display); font-weight: 600; font-size: 19px; letter-spacing: -0.01em; }
.gu-item p { font-size: 15px; line-height: 1.55; color: var(--fg-2); }
.gu-meta { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; font-size: 13px; color: var(--fg-3); }

/* Colonne: contenuto e barra laterale. */
.gu-cols { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; align-items: start; }
@media (max-width: 960px) { .gu-cols { grid-template-columns: 1fr; } }
.gu-aside { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 96px; }
.gu-menu { padding: 20px; display: flex; flex-direction: column; gap: 2px; }
.gu-menu-t { font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 8px; }
.mt .gu-menu a { padding: 8px 10px; border-radius: 8px; color: var(--fg-2); font-size: 15px; }
.mt .gu-menu a:hover { background: var(--mt-n-100); color: var(--fg-1); }
.mt .gu-menu a.is-on { background: var(--accent-tint); color: var(--fg-1); font-weight: 600; }
.gu-cta { background: var(--surface-inverse); color: var(--fg-inverse); border-radius: 12px; padding: 24px; display: flex; flex-direction: column; gap: 10px; }
.gu-cta-e { font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.gu-cta-h { font-family: var(--font-display); font-weight: 600; font-size: 20px; line-height: 1.25; }
.gu-cta-p { font-size: 15px; line-height: 1.55; color: var(--mt-n-200); }
.gu-cta-a { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.gu-disc { margin-top: 32px; font-size: 13px; line-height: 1.6; color: var(--fg-3); }

/* La guida. */
.gu-art-head { display: flex; flex-direction: column; gap: 14px; margin-bottom: 28px; }
.mt .gu-art-h1 { font-size: clamp(32px, 4.4vw, 52px); }
.gu-toc { background: var(--accent-tint); border-radius: 12px; padding: 20px 24px; margin-bottom: 32px; }
.gu-toc-t { font-size: 13px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--accent-deep); margin-bottom: 8px; }
.gu-toc ul { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 4px; font-size: 15px; }
.gu-toc-l3 { margin-left: 16px; }
.gu-prose { font-size: 17px; line-height: 1.7; color: var(--fg-1); }
.gu-prose > * + * { margin-top: 1em; }
.gu-prose h2 { font-family: var(--font-display); font-weight: 600; font-size: 26px; line-height: 1.2; letter-spacing: -0.02em; margin-top: 1.6em; }
.gu-prose h3 { font-family: var(--font-display); font-weight: 600; font-size: 20px; margin-top: 1.4em; }
.gu-prose ul, .gu-prose ol { padding-left: 1.4em; }
.mt .gu-prose a { text-decoration: underline; }
.gu-correlate { margin-top: 48px; }
.gu-correlate ul { margin-top: 12px; padding-left: 1.2em; display: flex; flex-direction: column; gap: 6px; }
.gu-art-head + .gu-toc, .gu-prose + .gu-faq { margin-top: 32px; }
/* Argomenti a pastiglie (prototipo «Guida»): attiva piena d'accento, le altre bianche con ombra. */
.gu-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.gu-chips button { all: unset; box-sizing: border-box; cursor: pointer; height: 36px; padding: 0 14px; border-radius: 4px; display: inline-flex; align-items: center; white-space: nowrap; font-size: 14px; font-weight: 600; background: var(--mt-n-0); color: var(--fg-2); box-shadow: var(--shadow-1); transition: background 180ms var(--ease-out), color 180ms; }
.gu-chips button:hover { filter: brightness(.97); }
.gu-chips button:focus-visible { outline: 2px solid var(--focus-ring); }
.gu-chips button.is-on { background: var(--accent); color: var(--mt-ink); box-shadow: none; }