/* File: assets/css/style.css | Artifact v1.0 */

:root {
    --nero: #0d0f12;
    --nero-2: #171a20;
    --bianco: #fff;
    --grigio-50: #fafafa;
    --grigio-100: #f2f4f7;
    --grigio-200: #e2e6ec;
    --grigio-500: #667085;
    --testo: #12141a;
    --blu: #2c5bff;
    --blu-testo: #2c5bff;
    --blu-scuro: #143dcc;
    --lime: #c6f24e;
    --magenta: #ff3d8b;
    --ciano: #70dcff;
    --ambra: #ffd166;
    --verde: #147d4f;
    --superficie: #fff;
    --superficie-2: #f2f4f7;
    --bordo: #d8dde6;
    --muted: #596273;
    --ombra: 0 22px 60px rgb(13 15 18 / .12);
    --radius: 24px;
    --radius-sm: 14px;
    --wrap: 1180px;
    --font-display: "Arial Rounded MT Bold", "Trebuchet MS", system-ui, sans-serif;
    --font-body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

[data-theme="dark"] {
    --testo: #f5f7fb;
    --superficie: #101319;
    --superficie-2: #191e27;
    --bordo: #303744;
    --muted: #aab3c3;
    --blu-testo: #8ea6ff;
    --ombra: 0 22px 60px rgb(0 0 0 / .32);
    color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
    [data-theme="system"] {
        --testo: #f5f7fb;
        --superficie: #101319;
        --superficie-2: #191e27;
        --bordo: #303744;
        --muted: #aab3c3;
        --blu-testo: #8ea6ff;
        --ombra: 0 22px 60px rgb(0 0 0 / .32);
        color-scheme: dark;
    }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 108px; }
body { margin: 0; background: var(--superficie); color: var(--testo); font-family: var(--font-body); font-size: 1rem; line-height: 1.65; text-rendering: optimizeLegibility; }
body.is-locked { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: .08em; text-underline-offset: .18em; }
button, input, textarea, select { font: inherit; }
button, summary { cursor: pointer; }
:focus-visible { outline: 3px solid var(--magenta); outline-offset: 4px; }
::selection { background: var(--lime); color: var(--nero); }

h1, h2, h3, h4 { margin: 0 0 .65em; font-family: var(--font-display); line-height: 1.06; letter-spacing: -.035em; text-wrap: balance; }
h1 { font-size: clamp(2.7rem, 7vw, 6.8rem); }
h2 { font-size: clamp(2rem, 4.2vw, 4rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.7rem); }
p { margin: 0 0 1.15em; }
.wrap { width: min(calc(100% - 32px), var(--wrap)); margin-inline: auto; }
.narrow { width: min(calc(100% - 32px), 760px); margin-inline: auto; }
.sr-only { position: absolute!important; width: 1px!important; height: 1px!important; padding: 0!important; margin: -1px!important; overflow: hidden!important; clip: rect(0,0,0,0)!important; white-space: nowrap!important; border: 0!important; }
.skip-link { position: fixed; z-index: 9999; left: 16px; top: -80px; padding: 12px 18px; border-radius: 10px; background: var(--lime); color: var(--nero); font-weight: 800; transition: top .2s; }
.skip-link:focus { top: 16px; }

.topbar { background: var(--nero); color: #fff; font-size: .73rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.topbar__inner { min-height: 34px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.topbar a { color: var(--lime); text-decoration: none; }
.site-header { position: sticky; z-index: 100; top: 0; background: color-mix(in srgb, var(--superficie) 92%, transparent); border-bottom: 1px solid var(--bordo); backdrop-filter: blur(16px); }
.nav-wrap { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--testo); text-decoration: none; }
.brand__mark { flex: 0 0 38px; color: var(--blu); }
.brand__text { font-family: var(--font-display); font-size: 1.02rem; font-weight: 900; letter-spacing: -.035em; line-height: .82; }
.brand__text span { display: block; color: var(--blu); font-size: .72em; letter-spacing: .095em; }
.desktop-nav { display: none; gap: 24px; align-items: center; }
.desktop-nav a { position: relative; font-size: .88rem; font-weight: 750; text-decoration: none; }
.desktop-nav a::after { position: absolute; right: 0; bottom: -10px; left: 0; height: 3px; background: var(--blu); content: ""; transform: scaleX(0); transition: transform .2s; }
.desktop-nav a:hover::after, .desktop-nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav-actions { display: flex; align-items: center; gap: 7px; }
.icon-button { display: grid; width: 43px; height: 43px; place-items: center; border: 1px solid var(--bordo); border-radius: 50%; background: var(--superficie); color: var(--testo); }
.icon-button:hover { background: var(--superficie-2); }
.theme-toggle__moon { display: none; }
[data-theme="dark"] .theme-toggle__sun { display: none; }
[data-theme="dark"] .theme-toggle__moon { display: block; }
.menu-toggle { display: grid; width: 54px; height: 43px; padding: 8px 10px; align-content: center; gap: 5px; border: 0; border-radius: 20px; background: var(--nero); color: white; }
.menu-toggle span { position: absolute; clip: rect(0,0,0,0); }
.menu-toggle i { display: block; width: 24px; height: 2px; margin-inline: auto; background: currentColor; transition: transform .2s; }
.menu-toggle[aria-expanded="true"] i:first-of-type { transform: translateY(3.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] i:last-of-type { transform: translateY(-3.5px) rotate(-45deg); }
.mobile-menu { position: fixed; z-index: 99; inset: 110px 0 0; overflow-y: auto; padding: 30px 24px 60px; background: var(--nero); color: #fff; }
.mobile-menu[hidden] { display: none; }
.mobile-menu > a { display: flex; padding: 16px 0; justify-content: space-between; border-bottom: 1px solid #343840; font-family: var(--font-display); font-size: clamp(1.7rem, 8vw, 3rem); font-weight: 800; text-decoration: none; }
.mobile-menu > a span { color: var(--lime); font-size: .45em; }
.mobile-menu > div { display: flex; margin-top: 26px; flex-wrap: wrap; gap: 10px 18px; }
.mobile-menu > div a { color: #d1d5dc; }

.search-dialog { width: min(calc(100% - 28px), 780px); max-height: min(760px, calc(100vh - 40px)); padding: clamp(22px, 5vw, 48px); border: 1px solid var(--bordo); border-radius: 28px; background: var(--superficie); color: var(--testo); box-shadow: var(--ombra); }
.search-dialog::backdrop { background: rgb(5 7 10 / .72); backdrop-filter: blur(6px); }
.search-dialog__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.search-dialog h2 { font-size: clamp(1.8rem, 5vw, 3.4rem); }
.search-field { display: block; margin-top: 18px; }
.search-field input { width: 100%; padding: 17px 20px; border: 2px solid var(--testo); border-radius: 16px; background: var(--superficie); color: var(--testo); font-size: 1.08rem; }
.search-hint { margin: 9px 0 20px; color: var(--muted); font-size: .86rem; }
.search-results { display: grid; gap: 9px; }
.search-result { display: grid; padding: 13px 15px; border: 1px solid var(--bordo); border-radius: 12px; text-decoration: none; }
.search-result:hover { border-color: var(--blu); background: var(--superficie-2); }
.search-result small { color: var(--blu-testo); font-weight: 800; }

.eyebrow { margin: 0 0 13px; color: var(--blu-testo); font-size: .76rem; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.lead { max-width: 780px; color: var(--muted); font-size: clamp(1.1rem, 2vw, 1.4rem); line-height: 1.55; }
.btn { display: inline-flex; min-height: 49px; padding: 12px 22px; align-items: center; justify-content: center; gap: 10px; border: 2px solid var(--nero); border-radius: 999px; background: var(--nero); color: #fff; font-weight: 820; text-decoration: none; transition: transform .18s, box-shadow .18s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 0 var(--lime); }
.btn--blue { border-color: var(--blu); background: var(--blu); }
.btn--light { border-color: #fff; background: #fff; color: var(--nero); }
.btn--outline { border-color: currentColor; background: transparent; color: var(--testo); }
.btn--on-dark { color: #fff; }
.eyebrow--light { color: #fff; }
.text-link { color: var(--blu-testo); font-weight: 800; }
.badge { display: inline-flex; padding: 5px 10px; border-radius: 999px; background: var(--nero); color: #fff; font-size: .69rem; font-weight: 850; letter-spacing: .08em; line-height: 1.2; text-transform: uppercase; }
.badge--seo { background: #173fc6; }
.badge--sem { background: #a01955; }
.badge--analytics { background: #006a7d; }
.badge--ai { background: #477000; color: #fff; }

.hero { position: relative; overflow: hidden; padding: clamp(62px, 9vw, 112px) 0 55px; background: var(--nero); color: #fff; }
.hero::before { position: absolute; width: 46vw; height: 46vw; min-width: 400px; min-height: 400px; right: -14vw; top: -21vw; border: clamp(50px, 8vw, 120px) solid var(--blu); border-radius: 50%; content: ""; opacity: .9; }
.hero::after { position: absolute; width: 250px; height: 250px; right: 18%; bottom: -175px; border: 55px solid var(--magenta); border-radius: 50%; content: ""; }
.hero__content { position: relative; z-index: 1; }
.hero .eyebrow { color: var(--lime); }
.hero h1 { max-width: 1000px; font-size: clamp(3.35rem, 9.6vw, 8.7rem); text-transform: uppercase; }
.hero h1 span { display: block; color: var(--lime); }
.hero__lead { max-width: 720px; color: #d9dde6; font-size: clamp(1.1rem, 2.1vw, 1.45rem); }
.hero__actions { display: flex; margin-top: 30px; flex-wrap: wrap; gap: 12px; }
.hero__note { display: flex; margin-top: 58px; align-items: center; gap: 13px; color: #b7bdc8; font-size: .82rem; }
.hero__note i { display: block; width: 42px; height: 1px; background: var(--lime); }

.pillar-strip { display: grid; }
.pillar-tile { position: relative; min-height: 300px; padding: 32px; overflow: hidden; color: var(--nero); text-decoration: none; }
.pillar-tile:nth-child(1) { background: var(--lime); }
.pillar-tile:nth-child(2) { background: var(--magenta); }
.pillar-tile:nth-child(3) { background: var(--ciano); }
.pillar-tile:nth-child(4) { background: var(--ambra); }
.pillar-tile__number { display: block; margin-bottom: 80px; font-size: .78rem; font-weight: 900; }
.pillar-tile h2 { max-width: 290px; margin-bottom: 8px; font-size: clamp(2rem, 4vw, 3rem); text-transform: uppercase; }
.pillar-tile p { max-width: 300px; margin: 0; line-height: 1.45; }
.pillar-tile__arrow { position: absolute; right: 25px; top: 25px; display: grid; width: 47px; height: 47px; place-items: center; border: 2px solid var(--nero); border-radius: 50%; font-size: 1.4rem; transition: transform .2s, background .2s; }
.pillar-tile:hover .pillar-tile__arrow { background: var(--nero); color: #fff; transform: rotate(45deg); }

.section { padding: clamp(70px, 10vw, 120px) 0; }
.section--soft { background: var(--superficie-2); }
.section--dark { background: var(--nero); color: #fff; }
.section--lime { background: var(--lime); color: var(--nero); }
.section-head { display: flex; margin-bottom: 38px; align-items: end; justify-content: space-between; gap: 24px; }
.section-head h2 { max-width: 760px; margin: 0; }
.section-head .eyebrow { color: var(--blu-testo); }
.section--dark .eyebrow { color: var(--lime); }
.card-grid { display: grid; gap: 22px; }
.article-card { overflow: hidden; border: 1px solid var(--bordo); border-radius: var(--radius); background: var(--superficie); box-shadow: 0 1px 0 rgb(0 0 0 / .03); }
.article-card__visual { position: relative; display: flex; min-height: 215px; padding: 22px; align-items: end; justify-content: space-between; overflow: hidden; background: var(--lime); color: var(--nero); text-decoration: none; }
.article-card__visual::after { position: absolute; width: 140px; height: 140px; right: -30px; top: -42px; border: 30px solid currentColor; border-radius: 50%; content: ""; opacity: .24; }
.article-card__visual span { font-family: var(--font-display); font-size: 1.5rem; font-weight: 900; text-transform: uppercase; }
.article-card__visual b { font-family: var(--font-display); font-size: 4rem; line-height: .8; opacity: .65; }
.category-sem { background: var(--magenta); }
.category-analytics { background: var(--ciano); }
.category-ai-search { background: var(--ambra); }
.article-card__body { padding: 24px; }
.article-card h3 { margin: 14px 0 10px; }
.article-card h3 a { text-decoration: none; }
.article-card h3 a:hover { color: var(--blu-testo); }
.article-card p { color: var(--muted); font-size: .95rem; }
.meta-row { display: flex; margin-top: 20px; justify-content: space-between; gap: 14px; color: var(--muted); font-size: .78rem; font-weight: 700; }

.manifesto-grid, .split-grid { display: grid; gap: 34px; }
.statement { max-width: 860px; }
.statement strong { color: var(--lime); }
.proof-list { display: grid; gap: 12px; }
.proof-item { display: grid; padding: 20px; grid-template-columns: 42px 1fr; gap: 13px; border: 1px solid #343943; border-radius: 15px; }
.proof-item b { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 50%; background: var(--lime); color: var(--nero); }
.proof-item p { margin: 3px 0 0; color: #c8cdd7; }
.resource-callout { display: grid; padding: clamp(30px, 6vw, 64px); gap: 30px; border-radius: 30px; background: var(--blu); color: #fff; }
.resource-callout h2 { margin-bottom: 8px; }
.resource-callout__actions { display: grid; align-content: end; justify-items: start; gap: 10px; }

.page-hero { padding: clamp(68px, 10vw, 125px) 0 clamp(55px, 8vw, 95px); border-bottom: 1px solid var(--bordo); background: var(--superficie-2); }
.page-hero h1 { max-width: 1000px; font-size: clamp(3rem, 8vw, 7.2rem); text-transform: uppercase; }
.page-hero--blue { background: var(--blu); color: #fff; }
.page-hero--blue .eyebrow, .page-hero--blue .lead { color: #fff; }
.page-hero--lime { background: var(--lime); color: var(--nero); }
.page-hero--lime .eyebrow, .page-hero--lime .lead { color: var(--nero); }
.page-hero--dark { background: var(--nero); color: #fff; }
.page-hero--dark .eyebrow { color: var(--lime); }
.page-hero--dark .lead { color: #ccd1dc; }

.content-layout { display: grid; padding-block: 60px 100px; gap: 44px; }
.prose { min-width: 0; max-width: 760px; font-size: 1.05rem; }
.prose > :first-child { margin-top: 0; }
.prose h2 { margin-top: 2em; padding-top: .2em; font-size: clamp(1.85rem, 4vw, 3.2rem); }
.prose h3 { margin-top: 1.7em; font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
.prose p, .prose li { max-width: 72ch; }
.prose a { color: var(--blu-testo); font-weight: 680; }
.prose li + li { margin-top: .55em; }
.prose blockquote { margin: 2em 0; padding: 22px 25px; border-left: 6px solid var(--blu); border-radius: 0 14px 14px 0; background: var(--superficie-2); font-size: 1.12rem; }
.prose blockquote p { margin: 0; }
.prose code { padding: .16em .4em; border-radius: 5px; background: var(--superficie-2); font-size: .88em; }
.prose pre { overflow: auto; padding: 22px; border-radius: 14px; background: var(--nero); color: #f2f4f7; }
.prose pre code { padding: 0; background: transparent; }
.prose h2 .anchor-link, .prose h3 .anchor-link { margin-left: .35em; color: var(--muted); font: inherit; font-size: .52em; opacity: 0; text-decoration: none; }
.prose h2:hover .anchor-link, .prose h3:hover .anchor-link, .anchor-link:focus { opacity: 1; }
.table-scroll { margin: 1.5em 0; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { padding: 13px 15px; border: 1px solid var(--bordo); text-align: left; vertical-align: top; }
th { background: var(--superficie-2); }
.summary-box { margin: 0 0 34px; padding: 24px; border: 2px solid var(--testo); border-radius: 18px; box-shadow: 7px 7px 0 var(--lime); }
.summary-box h2 { margin: 0 0 10px; font-size: 1.28rem; }
.summary-box p:last-child { margin-bottom: 0; }
.source-box { margin-top: 45px; padding: 22px; border-radius: 15px; background: var(--superficie-2); font-size: .9rem; }
.source-box h2 { margin: 0 0 10px; font-size: 1.2rem; }

.toc { display: none; align-self: start; }
.toc__box { padding: 20px; border: 1px solid var(--bordo); border-radius: 16px; background: var(--superficie); }
.toc h2 { margin: 0 0 13px; font-family: var(--font-body); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }
.toc ol { display: grid; margin: 0; padding: 0; gap: 8px; list-style: none; }
.toc a { display: block; color: var(--muted); font-size: .82rem; line-height: 1.35; text-decoration: none; }
.toc a[data-level="3"] { padding-left: 12px; }
.toc a:hover, .toc a.is-active { color: var(--blu-testo); }

.breadcrumb { padding: 18px 0; border-bottom: 1px solid var(--bordo); color: var(--muted); font-size: .82rem; }
.breadcrumb ol { display: flex; margin: 0; padding: 0; flex-wrap: wrap; gap: 7px; list-style: none; }
.breadcrumb li:not(:last-child)::after { margin-left: 7px; content: "/"; }
.article-header { padding: clamp(55px, 9vw, 100px) 0 48px; }
.article-header h1 { max-width: 980px; font-size: clamp(2.7rem, 7vw, 6.4rem); }
.article-header .lead { max-width: 820px; }
.article-header__meta { display: flex; margin-top: 28px; flex-wrap: wrap; gap: 10px 22px; color: var(--muted); font-size: .88rem; }
.article-body { display: grid; padding-bottom: 95px; gap: 50px; }
.article-body .prose { margin: 0; }
.author-box { display: grid; margin-top: 52px; padding: 24px; grid-template-columns: 58px 1fr; gap: 17px; border: 1px solid var(--bordo); border-radius: 18px; }
.author-box__avatar { display: grid; width: 58px; height: 58px; place-items: center; border-radius: 50%; background: var(--blu); color: #fff; font-family: var(--font-display); font-weight: 900; }
.author-box h2 { margin: 0 0 4px; font-size: 1.2rem; }
.author-box p { margin: 0; color: var(--muted); font-size: .9rem; }
.faq { margin-top: 65px; }
.faq details { border-top: 1px solid var(--bordo); }
.faq details:last-child { border-bottom: 1px solid var(--bordo); }
.faq summary { position: relative; padding: 20px 45px 20px 0; font-weight: 820; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { position: absolute; right: 4px; content: "+"; font-size: 1.5rem; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details div { padding: 0 30px 18px 0; color: var(--muted); }
.related { padding: 70px 0 95px; background: var(--superficie-2); }

.filter-bar { display: flex; margin-bottom: 32px; flex-wrap: wrap; gap: 9px; }
.filter-chip { padding: 8px 14px; border: 1px solid var(--bordo); border-radius: 999px; background: var(--superficie); color: var(--testo); font-weight: 750; text-decoration: none; }
.filter-chip:hover, .filter-chip[aria-current="true"] { border-color: var(--blu); background: var(--blu); color: #fff; }
.empty-state { padding: 44px; border: 1px dashed var(--bordo); border-radius: 20px; text-align: center; }
.pagination { display: flex; margin-top: 36px; justify-content: center; gap: 8px; }
.pagination a, .pagination span { display: grid; min-width: 42px; height: 42px; padding: 0 11px; place-items: center; border: 1px solid var(--bordo); border-radius: 50%; text-decoration: none; }
.pagination [aria-current="page"] { border-color: var(--blu); background: var(--blu); color: white; }

.topic-grid, .glossary-grid, .case-grid, .resource-grid { display: grid; gap: 20px; }
.topic-card, .glossary-item, .case-card, .resource-card { padding: clamp(22px, 4vw, 34px); border: 1px solid var(--bordo); border-radius: 20px; background: var(--superficie); }
.topic-card__number { display: inline-grid; width: 38px; height: 38px; margin-bottom: 35px; place-items: center; border-radius: 50%; background: var(--lime); color: var(--nero); font-weight: 900; }
.topic-card p, .glossary-item p, .case-card p, .resource-card p { color: var(--muted); }
.glossary-nav { display: flex; margin: 30px 0 45px; flex-wrap: wrap; gap: 7px; }
.glossary-nav a { display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid var(--bordo); border-radius: 50%; font-weight: 800; text-decoration: none; }
.glossary-item h2 { margin: 0 0 8px; font-size: 1.4rem; letter-spacing: -.01em; }
.case-card { display: flex; min-height: 340px; flex-direction: column; }
.case-grid--spaced { margin-top: 28px; }
.case-card__result { margin-top: auto; padding-top: 25px; border-top: 1px solid var(--bordo); }
.case-card__result strong { display: block; color: var(--blu-testo); font-family: var(--font-display); font-size: 2.5rem; }
.resource-card { position: relative; overflow: hidden; }
.resource-card::after { position: absolute; right: -30px; top: -30px; width: 100px; height: 100px; border: 20px solid var(--lime); border-radius: 50%; content: ""; opacity: .65; }
.resource-card h2 { padding-right: 50px; font-size: 1.5rem; }
.resource-card .btn { margin-top: 15px; }
.note { padding: 18px 20px; border-left: 5px solid var(--ambra); border-radius: 0 12px 12px 0; background: var(--superficie-2); }

.contact-grid { display: grid; gap: 38px; }
.contact-form { display: grid; gap: 17px; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 780; }
.field input, .field textarea, .field select { width: 100%; padding: 13px 15px; border: 1px solid var(--bordo); border-radius: 11px; background: var(--superficie); color: var(--testo); }
.field textarea { min-height: 160px; resize: vertical; }
.check-field { display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; }
.check-field input { width: 19px; height: 19px; margin-top: 3px; accent-color: var(--blu); }
.form-status { padding: 15px 17px; border-radius: 11px; background: var(--superficie-2); }
.form-status--success { border-left: 5px solid var(--verde); }
.form-status--error { border-left: 5px solid #c73636; }
.hp-field { position: absolute; left: -9999px; }

.site-footer { padding: 68px 0 25px; background: var(--nero); color: #fff; }
.footer-grid { display: grid; gap: 38px; }
.footer-brand p { max-width: 330px; margin-top: 18px; color: #afb6c3; }
.brand--footer { color: #fff; }
.brand--footer .brand__text span { color: var(--lime); }
.footer-grid nav { display: grid; align-content: start; gap: 8px; }
.footer-grid nav h2 { margin-bottom: 8px; color: var(--lime); font-family: var(--font-body); font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; }
.footer-grid nav a { color: #d2d6de; text-decoration: none; }
.footer-grid nav a:hover { color: #fff; text-decoration: underline; }
.footer-bottom { display: flex; margin-top: 55px; padding-top: 22px; flex-wrap: wrap; justify-content: space-between; gap: 8px 25px; border-top: 1px solid #343840; color: #939ba9; font-size: .76rem; }
.footer-bottom p { margin: 0; }
.back-to-top { position: fixed; z-index: 80; right: 20px; bottom: 20px; display: grid; width: 46px; height: 46px; place-items: center; border: 0; border-radius: 50%; background: var(--blu); color: #fff; box-shadow: var(--ombra); font-size: 1.2rem; opacity: 0; pointer-events: none; transform: translateY(12px); transition: .2s; }
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: none; }

@media (min-width: 640px) {
    .wrap, .narrow { width: min(calc(100% - 56px), var(--wrap)); }
    .pillar-strip { grid-template-columns: repeat(2, 1fr); }
    .card-grid, .topic-grid, .glossary-grid, .resource-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-grid { grid-template-columns: 1.6fr repeat(3, 1fr); }
    .resource-callout { grid-template-columns: 1.6fr .6fr; align-items: end; }
}

@media (min-width: 860px) {
    .desktop-nav { display: flex; }
    .menu-toggle { display: none; }
    .pillar-strip { grid-template-columns: repeat(4, 1fr); }
    .pillar-tile { min-height: 410px; }
    .card-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .card-grid--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .manifesto-grid { grid-template-columns: 1.25fr .75fr; align-items: start; }
    .split-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .case-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .contact-grid { grid-template-columns: .75fr 1.25fr; }
}

@media (min-width: 1024px) {
    .content-layout, .article-body { grid-template-columns: minmax(0, 760px) 270px; justify-content: space-between; }
    .toc { position: sticky; top: 118px; display: block; }
    .topic-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .glossary-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 520px) {
    .topbar__inner { justify-content: center; }
    .topbar a { display: none; }
    .theme-toggle { display: none; }
    .section-head { display: block; }
    .section-head .text-link { display: inline-block; margin-top: 14px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto!important; transition-duration: .01ms!important; animation-duration: .01ms!important; animation-iteration-count: 1!important; }
}

@media print {
    .topbar, .site-header, .site-footer, .toc, .back-to-top, .hero__actions, .filter-bar { display: none!important; }
    body { color: #000; background: #fff; font-size: 11pt; }
    .page-hero, .section { padding: 24px 0; background: #fff!important; color: #000!important; }
    .wrap, .narrow { width: 100%; }
    a { color: #000; }
}