/* ============================================================================
   EDGY NOTEBOOK — platform.css
   Stesso sistema del portfolio di Mattia Falco. Fondo quasi nero, un solo
   giallo, Inter Tight, righe sottili, liste numerate. Il foglio a quadretti
   della pagina Progettazione è la superficie di lavoro di lezioni e laboratorio.
   Il motore di animazione sta in motion.css/js e non si tocca.
   ============================================================================ */

/* ---------------------------------------------------------------- 1. FONT */
@font-face {
  font-family: "InterTight";
  src: url("../fonts/InterTight-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

/* -------------------------------------------------------------- 2. TOKENS */
:root {
  --bg: #111111; --bg-2: #171717; --bg-3: #1f1f1f;
  --ink: #ffffff;
  --ink-75: rgba(255,255,255,.75); --ink-55: rgba(255,255,255,.55);
  --ink-35: rgba(255,255,255,.35); --ink-20: rgba(255,255,255,.2);
  --line: rgba(255,255,255,.14); --line-2: rgba(255,255,255,.3);
  --accent: #FFD11A; --accent-2: #FFEFA3; --accent-ink: #14120a;
  --bad: #d2603a;

  /* carta della pagina Progettazione */
  --cv-paper: #f2ecdc; --cv-grid: rgba(38,38,38,.07); --cv-ink: #262626;
  --cv-ink-70: rgba(38,38,38,.72); --cv-ink-50: rgba(38,38,38,.5); --cv-ink-25: rgba(38,38,38,.25); --cv-ink-12: rgba(38,38,38,.12);

  --font: "InterTight", "Inter", "Helvetica Neue", Arial, sans-serif;
  --t-display: 6.2rem; --t-h2: 4.4rem; --t-h3: 1.6rem; --t-statement: 2.9rem;
  --t-body: max(.92rem, 14px); --t-small: max(.78rem, 12px); --t-meta: max(.62rem, 10px);
  --gutter: var(--c3o);
  --radius: 1.1rem;
  --rail: 3.2rem;
}

html { font-family: var(--font); background: var(--bg); color: var(--ink); }
body { background: var(--bg); color: var(--ink); font-size: var(--t-body); line-height: 1.4; font-weight: 450; }
::selection { color: var(--bg); background: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ------------------------------------------------------------ 3. TIPOGRAFIA */
h1, h2, h3, h4 { margin: 0; font-weight: 500; letter-spacing: -.04em; }
.display { font-size: var(--t-display); line-height: .92; letter-spacing: -.05em; text-wrap: balance; }
.h2 { font-size: var(--t-h2); line-height: .94; letter-spacing: -.045em; text-wrap: balance; }
.h3 { font-size: var(--t-h3); line-height: 1.05; letter-spacing: -.03em; }
.statement { font-size: var(--t-statement); line-height: 1.02; letter-spacing: -.04em; font-weight: 500; }
p { margin: 0; }
.lead { font-size: 1.2rem; line-height: 1.3; letter-spacing: -.02em; max-width: 34em; }
.copy { max-width: 36em; color: var(--ink-75); }
.copy + .copy { margin-top: 1em; }
.meta { font-size: var(--t-meta); line-height: 1.3; color: var(--ink-55); letter-spacing: 0; font-weight: 500; }
.label { font-size: var(--t-meta); letter-spacing: .18em; text-transform: uppercase; font-weight: 600; line-height: 1.3; }
.label--dim { color: var(--ink-55); }
.split-char, .split-word { display: inline-block; }
.split-line { display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }

/* --------------------------------------------------------------- 4. LAYOUT */
.wrap { padding-inline: var(--gutter); }
.section { position: relative; padding-block: var(--c10v); }
.section--tight { position: relative; padding-block: var(--c5v); }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }
.rule--thick { height: .25rem; background: var(--ink-35); border-radius: 2px; margin: var(--c2v) 0 var(--c3v); }
.head-row { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--c2o); }
.head-row .h2 { max-width: 13em; }
.head-row .meta { white-space: nowrap; }
.sec-head { display: flex; flex-direction: column; gap: 1rem; }
.sec-head .h2 { max-width: 14em; }

/* pulsanti pillola */
.pill {
  display: inline-flex; align-items: center; gap: .7em;
  padding: .85em 1.4em; border: 1px solid var(--line-2); border-radius: 999px;
  font-size: max(.68rem, 11px); font-weight: 600; letter-spacing: .04em; line-height: 1; text-transform: uppercase;
  position: relative; overflow: hidden; white-space: nowrap; color: var(--ink);
}
.pill [hover="bg"] { background: var(--ink); }
.pill [hover="text"] { color: var(--ink); position: relative; z-index: 1; }
@media (min-width: 992px) { .pill:hover [hover="text"] { color: var(--bg); } }
.pill--accent { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.pill--accent [hover="text"] { color: var(--accent-ink); }
.pill--accent [hover="bg"] { background: var(--ink); }
.pill--dark { background: var(--accent-ink); border-color: var(--accent-ink); }
.pill--dark [hover="text"] { color: var(--accent); }
.pill--dark [hover="bg"] { background: var(--bg-3); }
@media (min-width: 992px) { .pill--dark:hover [hover="text"] { color: var(--accent); } }
.pill[disabled], .pill.is-disabled { opacity: .4; pointer-events: none; }

.u-link { position: relative; display: inline-block; padding-bottom: .12em; }
.u-link::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: currentColor; transform: scaleX(1); transform-origin: left center; transition: transform .6s cubic-bezier(.52,0,0,1); }
@media (min-width: 992px) { .u-link:hover::after { transform: scaleX(0); transform-origin: right center; } }

.status { display: inline-flex; align-items: center; gap: .45em; font-size: var(--t-meta); color: var(--ink-55); font-weight: 500; }
.status::before { content: ""; width: .45em; height: .45em; border-radius: 50%; background: var(--ink-35); }
.status--live::before { background: var(--accent); }

/* ------------------------------------------------------ 5. TOPBAR + RAIL */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 80;
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: var(--c1v) var(--gutter) var(--c1v) calc(var(--rail) + var(--gutter));
  background: linear-gradient(to bottom, rgba(17,17,17,.9), rgba(17,17,17,0));
  transition: transform var(--dur-m) var(--ease-out);
}
.brand { display: flex; flex-direction: column; gap: .15rem; }
.brand__name { font-size: .9rem; font-weight: 600; letter-spacing: -.03em; display: inline-flex; align-items: center; gap: .45em; }
/* il marchio, il quaderno con l'elastico giallo (brand/edgy-notebook) */
.brand__mark { width: .82em; height: 1.2em; flex: none; color: var(--cv-paper); }
.brand__band { fill: var(--accent); }
.brand__role { font-size: var(--t-meta); color: var(--ink-55); padding-left: 1.15rem; }
.header-right { display: flex; align-items: center; gap: 1.6rem; }
.topnav { display: flex; gap: 1.3rem; }
.topnav__a { font-size: max(.66rem, 11px); font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--ink-55); transition: color var(--dur-s) var(--ease-out); position: relative; }
.topnav__a:hover, .topnav__a.is-active { color: var(--ink); }
.topnav__a.is-active::after { content: ""; position: absolute; left: 50%; bottom: -.6em; width: .3em; height: .3em; border-radius: 50%; background: var(--accent); transform: translateX(-50%); }

.rail {
  position: fixed; left: 0; top: 0; bottom: 0; width: var(--rail); z-index: 90;
  display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 2.2rem;
  border-right: 1px solid var(--line); background: var(--bg);
}
.rail a { writing-mode: vertical-rl; text-orientation: upright; font-size: .5rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 600; color: var(--ink-35); transition: color var(--dur-s) var(--ease-out); }
.rail a:hover, .rail a.is-active { color: var(--ink); }
.rail__mark { position: absolute; top: var(--c2v); left: 50%; transform: translateX(-50%); width: .5rem; height: .5rem; border-radius: 50%; background: var(--accent); }
.rail__bottom { position: absolute; bottom: var(--c2v); font-size: .5rem; color: var(--ink-35); writing-mode: vertical-rl; letter-spacing: .12em; }
main, .site-footer { padding-left: var(--rail); }

.burger { display: none; width: 2.4rem; height: 2.4rem; position: relative; }
.burger span { position: absolute; left: 20%; width: 60%; height: 1px; background: currentColor; transition: transform var(--dur-m) var(--ease-in-out), top var(--dur-m) var(--ease-in-out); }
.burger span:first-child { top: 42%; } .burger span:last-child { top: 58%; }
.menu-open .burger span:first-child { top: 50%; transform: rotate(45deg); }
.menu-open .burger span:last-child { top: 50%; transform: rotate(-45deg); }
.mobile-menu { position: fixed; inset: 0; z-index: 75; background: var(--accent); color: var(--accent-ink); display: none; flex-direction: column; justify-content: center; padding: var(--gutter); gap: 1rem; font-size: 2.6rem; font-weight: 500; letter-spacing: -.04em; }
.menu-open .mobile-menu { display: flex; }
.menu-open .site-header { background: none; color: var(--accent-ink); }
.menu-open .brand__mark { color: var(--accent-ink); }
.menu-open .brand__band { fill: var(--accent-ink); }
.menu-open .brand__role { color: var(--accent-ink); opacity: .7; }
.mobile-menu .meta { margin-bottom: 1rem; color: var(--accent-ink); opacity: .7; }
.mobile-menu__resume { margin-top: 1.4rem; font-size: 1.1rem; font-weight: 600; letter-spacing: 0; border-top: 1px solid rgba(20,18,10,.25); padding-top: 1.2rem; }

html.js [data-hero] { visibility: hidden; }

/* --------------------------------------------------------------- 6. HOME */
.hero-c {
  min-height: var(--_100svh, 100svh);
  display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); align-items: end;
  padding-top: 8rem; padding-bottom: var(--c3v);
}
.hero-c__text { grid-column: 1 / span 7; padding-bottom: 1rem; }
.hero-c__text > .meta { display: block; margin-bottom: 1.6rem; }
.hero-c__title { max-width: 9.5em; }
.hero-c__lead { margin-top: 1.8rem; color: var(--ink-75); max-width: 30em; }
.hero-c__actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.4rem; }
.hero-c__paper {
  grid-column: 8 / span 5; align-self: stretch; margin-top: 2rem;
  display: flex; flex-direction: column; min-height: 26rem;
  border-radius: var(--radius); padding: .8rem; position: relative;
  background-color: var(--cv-paper); color: var(--cv-ink);
  background-image: linear-gradient(var(--cv-grid) 1px, transparent 1px), linear-gradient(90deg, var(--cv-grid) 1px, transparent 1px);
  background-size: 1.6rem 1.6rem; background-position: -1px -1px;
}
.hero-c__window { flex: 1; position: relative; display: block; border: 1.5px solid var(--cv-ink); border-radius: .7rem; overflow: hidden; background: #cdbf9b; }
.hero-c__window canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero-c__cap { display: flex; gap: .8rem; align-items: baseline; padding: .8rem .3rem .1rem; font-size: 1rem; font-weight: 500; letter-spacing: -.02em; }
.hero-c__cap .meta { color: var(--cv-ink-50); }
.hero-c__cap span:nth-child(2) { flex: 1; }
.hero-c__cap span:last-child { transition: transform var(--dur-m) var(--ease-out); }
@media (min-width: 992px) { .hero-c__paper:hover .hero-c__cap span:last-child { transform: translateX(.4rem); } }

.numbers { padding-block: var(--c3v); }
.numbers__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); column-gap: var(--c1o); border-top: 1px solid var(--line); }
.numbers__list li { display: flex; flex-direction: column; gap: .5rem; padding-top: 1.2rem; }
.numbers__list b { font-size: 3.6rem; font-weight: 500; letter-spacing: -.05em; line-height: .9; }
.numbers__list li:first-child b { color: var(--accent); }
.numbers__list span { font-size: var(--t-small); color: var(--ink-55); max-width: 14em; }

/* la mappa dei modelli, sul foglio a quadretti */
.map__intro { max-width: 40rem; margin-bottom: var(--c3v); }
.map__intro .lead { color: var(--ink-75); }
.map__paper {
  border-radius: var(--radius); padding: 1.2rem; overflow-x: auto; -webkit-overflow-scrolling: touch;
  background-color: var(--cv-paper); color: var(--cv-ink);
  background-image: linear-gradient(var(--cv-grid) 1px, transparent 1px), linear-gradient(90deg, var(--cv-grid) 1px, transparent 1px);
  background-size: 1.6rem 1.6rem; background-position: -1px -1px;
}
.map__table { width: 100%; min-width: 56rem; border-collapse: separate; border-spacing: .35rem; table-layout: fixed; }
.map__table thead th { text-align: left; font-size: max(.68rem, 11px); letter-spacing: .12em; text-transform: uppercase; font-weight: 700; padding: .3rem .5rem .6rem; color: var(--cv-ink); }
.map__table thead th:first-child { width: 11rem; }
.map__table thead .meta { color: var(--cv-ink-50); text-transform: none; letter-spacing: 0; font-weight: 500; }
.map__table tbody th { text-align: left; vertical-align: top; padding: .7rem .5rem; border-top: 1.5px solid var(--cv-ink); }
.map__row { display: block; font-size: 1.25rem; font-weight: 500; letter-spacing: -.03em; }
.map__sensor { display: block; font-size: var(--t-meta); color: var(--cv-ink-50); margin-top: .3rem; font-weight: 500; }
.map__table td { vertical-align: top; padding: 0; }
.map__cell {
  display: flex; flex-direction: column; gap: .35rem; height: 100%; min-height: 6.2rem;
  padding: .7rem .75rem; border: 1.5px solid var(--cv-ink); border-radius: .5rem; background: rgba(242,236,220,.85);
  transition: background-color var(--dur-s) var(--ease-out), transform var(--dur-s) var(--ease-out);
}
.map__task { display: none; }
.map__ex { font-size: max(.82rem, 12.5px); line-height: 1.25; font-weight: 500; letter-spacing: -.01em; }
.map__to { margin-top: auto; font-size: var(--t-meta); font-weight: 700; color: var(--cv-ink-50); font-variant-numeric: tabular-nums; }
a.map__cell .map__to::after { content: " →"; }
a.map__cell { background: var(--accent); }
@media (min-width: 992px) { a.map__cell:hover { background: #fff3b8; transform: translateY(-2px); } }
.map__empty { text-align: center; color: var(--cv-ink-25); font-size: 1.4rem; vertical-align: middle !important; }

/* elenchi numerati, come i progetti del portfolio */
.works__body { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); }
.works__aside { grid-column: 1 / span 4; }
.works__aside .copy { max-width: 22em; }
.works__list { grid-column: 5 / span 8; border-top: 1px solid var(--line); list-style: none; margin: 0; padding: 0; }
.wrow {
  display: grid; grid-template-columns: 3.2rem 1fr auto auto; column-gap: var(--c1o); align-items: baseline;
  padding: 1rem 0; border-bottom: 1px solid var(--line); position: relative;
  transition: padding-left var(--dur-m) var(--ease-out);
}
.wrow .n { font-size: var(--t-meta); color: var(--ink-55); font-variant-numeric: tabular-nums; }
.wrow .t { font-size: 1.25rem; letter-spacing: -.025em; font-weight: 500; }
.wrow .t a::before { content: ""; position: absolute; inset: 0; }
.wrow .a { font-size: var(--t-meta); color: var(--ink-55); white-space: nowrap; }
.wrow .y { font-size: var(--t-meta); color: var(--ink-55); font-variant-numeric: tabular-nums; white-space: nowrap; }
.wrow .d { grid-column: 2 / span 3; font-size: var(--t-small); color: var(--ink-55); max-width: 42em; margin-top: .35rem; }
.wrow .d .status { margin-left: .4em; }
@media (min-width: 992px) { .wrow:has(.t a):hover { padding-left: .8rem; } .wrow:has(.t a):hover .t { color: var(--accent); } }
.lrow.is-soon .t { color: var(--ink-55); }
.lrow__tool { display: inline-block; margin-left: .3em; padding: .05em .55em; border: 1px solid var(--line-2); border-radius: 999px; font-size: var(--t-meta); color: var(--ink-75); }
.lrow__done { width: 1.1rem; height: 1.1rem; border-radius: 50%; border: 1px solid var(--line-2); align-self: center; }
.lrow.is-done .lrow__done { background: var(--accent); border-color: var(--accent); }
.lrow.is-done .lrow__done::after { content: ""; display: block; width: 100%; height: 100%; background: no-repeat center / 60% url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2 6.2 4.8 9 10 3' fill='none' stroke='%2314120a' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); }
.crow .t { font-size: 1.6rem; }
.crow.is-started .n { color: var(--accent); }

/* pannello giallo del laboratorio */
.labhome__panel { background: var(--accent); color: var(--accent-ink); border-radius: var(--radius); padding: var(--c5v) var(--c3o); }
.labhome__panel > .meta { color: var(--accent-ink); opacity: .7; }
.labhome__panel .h2 { margin: 1rem 0 1.4rem; max-width: 11em; }
.labhome__panel .lead { max-width: 32em; }
.labhome__steps { list-style: none; margin: var(--c3v) 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 var(--c1o); }
.labhome__steps li { display: grid; grid-template-columns: 2.4rem 1fr; row-gap: .3rem; padding: 1rem 0; border-top: 1px solid rgba(20,18,10,.25); }
.labhome__steps .meta { color: var(--accent-ink); opacity: .6; grid-row: span 2; }
.labhome__steps b { font-size: 1.3rem; font-weight: 500; letter-spacing: -.03em; }
.labhome__steps span:last-child { font-size: var(--t-small); opacity: .8; max-width: 22em; }
.labhome__inputs { list-style: none; margin: var(--c3v) 0 var(--c3v); padding: 0; border-top: 1.5px solid var(--accent-ink); }
.inrow { display: grid; grid-template-columns: 8rem 1fr 1.3fr auto; gap: var(--c1o); padding: .75rem 0; border-bottom: 1px solid rgba(20,18,10,.25); align-items: baseline; font-size: var(--t-small); }
.inrow b { font-size: 1.1rem; font-weight: 600; letter-spacing: -.02em; }
.inrow .meta { color: var(--accent-ink); opacity: .65; text-align: right; }

.anatomy__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--c1o); }
.anatomy__list li { display: flex; flex-direction: column; gap: .6rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.anatomy__list b { font-size: 1.3rem; font-weight: 500; letter-spacing: -.03em; }
.anatomy__list span:last-child { font-size: var(--t-small); color: var(--ink-55); }

.mapx__first { margin-top: .7rem; font-size: max(.85rem, 13px); line-height: 1.45; color: var(--cv-ink-70); }
.mapx__first .u-link { color: var(--cv-ink); font-weight: 600; }

/* la lezione zero (inizia/): l'apertura è bassa, così la prova arriva subito sotto il titolo */
.hero-c.zero { min-height: 0; padding-top: 9rem; padding-bottom: 1rem; }
.hero-c.zero .hero-c__text { grid-column: 1 / span 9; }
@media (max-width: 991px) { .hero-c.zero { padding-top: 6.5rem; } }
/* la lezione zero (inizia/): liste di voci con titolo e due righe, su due o tre colonne */
.zero__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem var(--c1o); }
.zero__list--3 { grid-template-columns: repeat(3, 1fr); }
.zero__list li { display: flex; flex-direction: column; gap: .6rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.zero__list b { font-size: 1.3rem; font-weight: 500; letter-spacing: -.03em; }
.zero__list li > span:last-child { font-size: var(--t-small); color: var(--ink-55); line-height: 1.5; }
.zero__more { margin-top: 2.4rem; max-width: 40em; }
/* le sfide del laboratorio, sulla pagina del laboratorio e dentro un ingresso */
.sfide__intro { max-width: 44em; margin-bottom: 2rem; }
.sfide__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.sfida { display: flex; flex-direction: column; align-items: flex-start; gap: .6rem; padding: 1.2rem; border: 1px solid var(--line-2); border-radius: var(--radius); }
.sfida b { font-size: 1.25rem; font-weight: 500; letter-spacing: -.02em; }
.sfida__d { font-size: var(--t-small); color: var(--ink-55); line-height: 1.5; flex: 1; }
.sfida.is-fatta { border-color: var(--accent); }
.sfida.is-fatta .sfida__esito { color: var(--accent); }
.lab__sfida { border: 1.5px solid var(--cv-ink); }
.lab__sfida.is-ok { background: rgba(255,209,26,.18); }
.lab__consigli { margin: .4rem 0 0; padding-left: 1.2rem; display: grid; gap: .3rem; font-size: var(--t-small); }
.lab__esiti { list-style: none; margin: .4rem 0 0; padding: 0; display: grid; gap: .35rem; }
.lab__esiti li { display: flex; gap: .6rem; align-items: baseline; }
.lab__esiti i { font-style: normal; font-weight: 700; width: 1.1rem; }
.lab__esiti .is-no i { color: var(--bad); }
@media (max-width: 991px) { .sfide__list { grid-template-columns: 1fr; } }

/* il ripasso di un corso (corsi/<corso>/ripasso/) */
.ripasso__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.4rem var(--c1o); }
.ripasso__list li { display: grid; gap: .45rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.ripasso__a { display: flex; flex-wrap: wrap; align-items: baseline; gap: .3rem .8rem; }
.ripasso__a b { font-size: 1.2rem; font-weight: 500; letter-spacing: -.02em; }
.ripasso__list p { font-size: var(--t-small); color: var(--ink-55); line-height: 1.5; }
.quiz__dove { white-space: nowrap; }
.cblock__ripasso { margin-top: 2rem; }
@media (max-width: 991px) { .ripasso__list { grid-template-columns: 1fr; } }

/* Problemi comuni (problemi/) */
.aiuto__indice { margin: 2rem 0 0; padding-left: 1.2rem; display: grid; gap: .45rem; max-width: 40em; }
.aiuto__list { display: grid; gap: 3.2rem; margin-top: 2.4rem; }
.aiuto__item { display: grid; grid-template-columns: 4rem minmax(0, 1fr); column-gap: var(--c1o); scroll-margin-top: 6rem; }
.aiuto__body { max-width: 46rem; display: grid; gap: .9rem; }
.aiuto__body .steps { margin: .2rem 0 .4rem; }
.aiuto__sub { font-size: 1.05rem; font-weight: 600; letter-spacing: -.01em; margin-top: .6rem; }
.aiuto__pesi { list-style: none; margin: 0; padding: 0; display: grid; gap: .35rem; }
.aiuto__pesi li { display: flex; justify-content: space-between; gap: 1rem; padding: .45rem 0; border-bottom: 1px solid var(--line); font-size: var(--t-small); }
.aiuto__pesi span { color: var(--ink-55); text-align: right; }
.aiuto__cancella { display: flex; flex-wrap: wrap; gap: .7rem; align-items: center; padding: 1.2rem; border: 1px solid var(--line-2); border-radius: var(--radius); }
.aiuto__cancella .meta { flex-basis: 100%; }
.aiuto__fine { margin-top: 3.2rem; max-width: 40em; }
@media (max-width: 991px) { .aiuto__item { grid-template-columns: 1fr; row-gap: .4rem; } }

/* l'attestato (attestato/): il canvas si vede intero, e la stampa mostra solo lui */
.att__vuoto, .att__pieno { display: grid; gap: 1.2rem; max-width: 64rem; }
.att__vuoto[hidden], .att__pieno[hidden] { display: none; }
.att__campi { display: grid; gap: .5rem; max-width: 30rem; }
.att__label { font-size: var(--t-meta); letter-spacing: .18em; text-transform: uppercase; font-weight: 600; color: var(--ink-75); }
.att__input { width: 100%; padding: .75em .9em; border: 1px solid var(--line-2); border-radius: .6rem; background: var(--bg-2); color: var(--ink); font: inherit; font-size: max(1.1rem, 16px); }
.att__input:focus { outline: none; box-shadow: 0 0 0 3px var(--accent); }
.att__anteprima { margin: .6rem 0 0; }
.att__tela { display: block; width: 100%; height: auto; aspect-ratio: 2000 / 1414; border-radius: .6rem; box-shadow: 0 1.2rem 3rem rgba(0,0,0,.45); }
.att__azioni { display: flex; flex-wrap: wrap; gap: .7rem; }
.att__nota { max-width: 44em; font-size: var(--t-small); }
.u-sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.att-stampa { display: none; }

/* le esercitazioni (esercitazioni/ e esercitazioni/<slug>/) */
.eser__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; }
.eser__item { display: grid; gap: .7rem; align-content: start; padding: 1.4rem; border: 1px solid var(--line-2); border-radius: var(--radius); }
.eser__item.is-pronta { border-color: var(--accent); }
.eser__item h2 a { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .18em; }
.eser__dl { display: grid; grid-template-columns: 6.5em minmax(0, 1fr); gap: .4rem 1rem; margin: 0; font-size: var(--t-small); }
.eser__dl dt { color: var(--ink-55); font-weight: 600; }
.eser__dl dd { margin: 0; color: var(--ink-75); }
.eser__stato { margin-top: .3rem; }
.eser__azioni { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.6rem; }
.eser__serve { display: grid; gap: .6rem; max-width: 46rem; }
.eser__passi { list-style: none; margin: 2.8rem 0 0; padding: 0; display: grid; gap: 3rem; }
.eser__passo { display: grid; grid-template-columns: 4rem minmax(0, 1fr); column-gap: var(--c1o); scroll-margin-top: 6rem; }
.eser__body { display: grid; gap: .9rem; min-width: 0; max-width: 52rem; }
.eser__code { margin: .3rem 0 0; display: grid; gap: .35rem; min-width: 0; }
.eser__code .code { margin: 0; max-height: 34rem; overflow: auto; }
.eser__problemi { display: grid; gap: .6rem; max-width: 46rem; margin-top: 3.4rem; }
.eser__fine { margin-top: 2.4rem; max-width: 44em; }
@media (max-width: 991px) { .eser__list { grid-template-columns: 1fr; } .eser__passo { grid-template-columns: 1fr; row-gap: .4rem; } }
@media print {
  @page { size: A4 landscape; margin: 0; }
  html, body { background: #fff !important; }
  body.att-pronto > :not(.att-stampa) { display: none !important; }
  .att-pronto .att-stampa { display: block; }
  .att-stampa img { display: block; width: 100%; height: auto; }
}

/* in Come funziona, il rimando alla lezione zero al posto del percorso */
.zero__ponte { padding-block: 1rem 3.5rem; }
.zero__ponte-box { display: grid; gap: 1.1rem; justify-items: start; max-width: 56rem; padding: 2rem 2.2rem; border: 1px solid var(--line-2); border-radius: var(--radius); }
.zero__ponte-box .lead { color: var(--ink-75); }
@media (max-width: 991px) { .zero__list, .zero__list--3 { grid-template-columns: 1fr; gap: 1.4rem; } }

.about__grid { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); }
.about__grid > .meta { grid-column: 1 / span 3; }
.about__text { grid-column: 4 / span 8; display: flex; flex-direction: column; gap: 1.6rem; }
.about__text .statement { max-width: 20em; }
.about__text .copy a { color: var(--ink); }

.faq__list { border-top: 1px solid var(--line); max-width: 60rem; margin-left: auto; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary { list-style: none; display: grid; grid-template-columns: 3.2rem 1fr 1.2rem; align-items: baseline; gap: var(--c1o); padding: 1.1rem 0; cursor: pointer; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__q { font-size: 1.25rem; font-weight: 500; letter-spacing: -.025em; }
.faq__item summary i { width: .8rem; height: .8rem; position: relative; align-self: center; }
.faq__item summary i::before, .faq__item summary i::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1.5px; background: currentColor; transition: transform var(--dur-s) var(--ease-out); }
.faq__item summary i::after { transform: rotate(90deg); }
.faq__item[open] summary i::after { transform: rotate(0); }
.faq__item[open] summary .faq__q { color: var(--accent); }
.faq__item .copy { padding: 0 0 1.4rem calc(3.2rem + var(--c1o)); }

.closing__t { max-width: 13em; margin: 1.2rem 0 2.2rem; }
.closing__actions { display: flex; gap: .8rem; flex-wrap: wrap; }

/* --------------------------------------------------------- 7. PAGINE INTERNE */
.page-hero { padding-top: 9rem; padding-bottom: var(--c3v); }
.breadcrumb { display: inline-block; }
.page-hero__meta { display: block; margin: 2.2rem 0 1.2rem; }
.page-hero__title { max-width: 12em; }
.page-hero__lead { margin-top: 1.8rem; color: var(--ink-75); max-width: 36em; }
.page-hero__prog { margin-top: 1.6rem; }
.nf { min-height: 80svh; }

.cblock { border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); }
.cblock__head { grid-column: 1 / span 4; display: flex; gap: 1.2rem; align-items: flex-start; }
.cblock__head > div { display: flex; flex-direction: column; gap: 1rem; }
.cblock__n { font-size: 5.4rem; line-height: .8; letter-spacing: -.06em; font-weight: 500; color: var(--accent); }
.cblock__t { font-size: 2.6rem; }
.cblock__t a:hover { color: var(--accent); }
.cblock .copy { max-width: 24em; font-size: var(--t-small); }
.cblock .lessons { grid-column: 5 / span 8; }
.page-hero + .cblock { border-top: 0; }
.page-hero + .cblock .lessons { grid-column: 1 / span 12; }

/* glossario */
.gl__letters { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 2rem; }
.gl__letters a { width: 2.2rem; height: 2.2rem; display: grid; place-items: center; border: 1px solid var(--line-2); border-radius: 50%; font-size: var(--t-small); font-weight: 600; transition: background-color var(--dur-s), color var(--dur-s); }
.gl__letters a:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.gl__group { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); border-top: 1px solid var(--line); padding: 1.4rem 0; scroll-margin-top: 6rem; }
.gl__letter { grid-column: 1 / span 2; font-size: 3rem; line-height: .9; font-weight: 500; letter-spacing: -.05em; color: var(--ink-35); }
.gl__list { grid-column: 3 / span 10; margin: 0; }
.gl__item { display: grid; grid-template-columns: 14rem 1fr; gap: var(--c1o); padding: .9rem 0; border-bottom: 1px solid var(--line); scroll-margin-top: 7rem; }
.gl__item:last-child { border-bottom: 0; }
.gl__item dt { font-size: 1.15rem; font-weight: 500; letter-spacing: -.02em; }
.gl__item dd { margin: 0; color: var(--ink-75); max-width: 40em; }
.gl__item:target dt { color: var(--accent); }
.gl__used { margin-top: .5rem; display: flex; gap: .7em; flex-wrap: wrap; }
.gl__used a { color: var(--ink); }

/* tabelle */
.tbl-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin-top: 1.4rem; }
.tbl { width: 100%; border-collapse: collapse; font-size: var(--t-small); min-width: 40rem; }
.tbl th, .tbl td { text-align: left; vertical-align: top; padding: .7rem .8rem .7rem 0; border-bottom: 1px solid var(--line); }
.tbl thead th { font-size: var(--t-meta); letter-spacing: .14em; text-transform: uppercase; font-weight: 600; color: var(--ink-55); border-bottom: 1px solid var(--line-2); }
.tbl tbody th { font-weight: 600; color: var(--ink); }
.tbl td { color: var(--ink-75); }
.lab__note { margin-top: 2rem; }

/* ------------------------------------------------------------- 8. LEZIONE */
.les-hero { padding-top: 9rem; padding-bottom: 4rem; }
.les-hero__meta { display: block; margin: 2.2rem 0 1.2rem; }
.les-hero__title { max-width: 12em; }
.les-hero__lead { margin-top: 1.8rem; max-width: 36em; color: var(--ink-75); }
.les-hero__learn { margin-top: 2.6rem; max-width: 44rem; }
.les-hero__learn ol { list-style: none; margin: .9rem 0 0; padding: 0; border-top: 1px solid var(--line); counter-reset: l; }
.les-hero__learn li { counter-increment: l; display: grid; grid-template-columns: 3.2rem 1fr; padding: .7rem 0; border-bottom: 1px solid var(--line); font-size: 1.05rem; letter-spacing: -.015em; }
.les-hero__learn li::before { content: "(" counter(l, decimal-leading-zero) ")"; font-size: var(--t-meta); color: var(--ink-55); padding-top: .25em; }
.les-hero__cue { margin-top: 2.6rem; display: inline-flex; gap: .6em; align-items: center; }
.les-hero__arrow { display: inline-block; color: var(--accent); animation: cvs-bob 1.4s var(--ease-in-out) infinite; }
@keyframes cvs-bob { 50% { transform: translateY(.35em); } }

/* il racconto sul foglio a quadretti, come nella pagina Progettazione */
.cvs__track { height: calc(var(--chapters, 7) * 110vh + 60vh); }
.cvs__stage { position: sticky; top: 0; height: 100vh; height: 100svh; padding: 4.6rem var(--gutter) 1.2rem var(--gutter); }
.cvs__paper {
  position: relative; height: 100%; overflow: hidden; border-radius: var(--radius);
  background-color: var(--cv-paper); color: var(--cv-ink);
  background-image: linear-gradient(var(--cv-grid) 1px, transparent 1px), linear-gradient(90deg, var(--cv-grid) 1px, transparent 1px);
  background-size: 1.6rem 1.6rem; background-position: -1px -1px;
}
.cvs__window {
  position: absolute; top: 1rem; bottom: 4.4rem; left: calc(38% + .2rem); right: 1rem;
  border: 1.5px solid var(--cv-ink); border-radius: .7rem; overflow: hidden; background: #cdbf9b;
  transition: left 1s var(--ease-in-out), right 1s var(--ease-in-out);
}
.cvs__stage[data-side="left"] .cvs__window { left: 1rem; right: calc(38% + .2rem); }
.cvs__window canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.cvs__loading { position: absolute; left: 1rem; bottom: .8rem; color: var(--cv-ink-50); transition: opacity .6s; }
[data-ready="true"] .cvs__loading, .cvs__window[data-ready="true"] .cvs__loading { opacity: 0; }
.cvs__steps { list-style: none; margin: 0; padding: 0; }
.cvs__step {
  position: absolute; top: 50%; left: 2.2rem; width: calc(38% - 4rem);
  transform: translateY(calc(-50% + 1.4rem)); opacity: 0; pointer-events: none;
  transition: opacity .5s var(--ease-out), transform .8s var(--ease-out);
}
.cvs__stage[data-side="left"] .cvs__step { left: auto; right: 2.2rem; }
.cvs__step.is-active { opacity: 1; transform: translateY(-52%); pointer-events: auto; transition-delay: .25s; }
.cvs__kicker { display: flex; gap: .6em; align-items: baseline; font-size: max(.72rem, 11px); letter-spacing: .14em; text-transform: uppercase; font-weight: 600; color: rgba(38,38,38,.6); }
.cvs__kicker b { color: var(--cv-ink); }
.cvs__title { font-size: 2.3rem; line-height: 1; letter-spacing: -.04em; font-weight: 500; margin: .9rem 0 1.1rem; text-wrap: balance; }
.cvs__text { font-size: max(.95rem, 14px); line-height: 1.5; color: rgba(38,38,38,.82); margin: 0; }
.cvs__tip { font-size: max(.85rem, 13px); line-height: 1.5; color: rgba(38,38,38,.72); margin: 1.2rem 0 0; padding-top: 1rem; border-top: 1px dashed rgba(38,38,38,.25); }
.cvs__tip mark, .try mark { background: linear-gradient(transparent 52%, rgba(255,209,26,.75) 52%); color: var(--cv-ink); font-weight: 700; padding: 0 .1em; }
.cvs__bar { position: absolute; left: 1rem; right: 1rem; bottom: 1rem; height: 2.6rem; display: flex; align-items: center; gap: 1.2rem; }
.cvs__count { font-size: max(.8rem, 12px); font-variant-numeric: tabular-nums; color: rgba(38,38,38,.55); white-space: nowrap; }
.cvs__count b { color: var(--cv-ink); }
.cvs__ticks { display: flex; gap: .35rem; }
.cvs__tick { position: relative; width: 2.1rem; height: 2.1rem; border: 1.5px solid rgba(38,38,38,.3); border-radius: 50%; font-size: max(.62rem, 10px); font-weight: 700; color: rgba(38,38,38,.5); display: grid; place-items: center; transition: background-color .4s, border-color .4s, color .4s; }
.cvs__tick.is-done { background: var(--cv-ink); border-color: var(--cv-ink); color: var(--cv-paper); }
.cvs__tick:last-child.is-done, .cvs__tick.is-done:has(+ .cvs__tick:not(.is-done)) { background: var(--accent); border-color: var(--cv-ink); color: var(--cv-ink); }
.cvs__line { flex: 1; height: 2px; background: rgba(38,38,38,.12); position: relative; overflow: hidden; }
.cvs__line i { position: absolute; inset: 0; background: var(--cv-ink); transform-origin: left; transform: scaleX(0); }

/* senza WebGL o con il movimento ridotto: capitoli uno sotto l'altro */
.cvs.no-gl .cvs__track { height: auto; }
.cvs.no-gl .cvs__stage { position: static; height: auto; }
.cvs.no-gl .cvs__window, .cvs.no-gl .cvs__bar { display: none; }
.cvs.no-gl .cvs__paper { padding: 2rem; }
.cvs.no-gl .cvs__steps { display: grid; gap: 2.4rem; }
.cvs.no-gl .cvs__step { position: static; width: auto; max-width: 40rem; opacity: 1; transform: none; pointer-events: auto; }

/* approfondisci */
.deep__list { display: flex; flex-direction: column; }
.deep__item { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); padding: 2rem 0; border-bottom: 1px solid var(--line); }
.deep__item:first-child { padding-top: 0; }
.deep__n { grid-column: 1 / span 2; padding-top: .5em; }
.deep__body { grid-column: 3 / span 9; display: flex; flex-direction: column; gap: 1rem; }
.deep__body .h3 { margin-bottom: .3rem; }
.facts { list-style: none; margin: .8rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--c1o); }
.facts li { display: flex; flex-direction: column; gap: .35rem; border-top: 1px solid var(--line-2); padding-top: .8rem; }
.facts b { font-size: 2rem; font-weight: 500; letter-spacing: -.04em; line-height: 1; color: var(--accent); }
.facts span { font-size: var(--t-small); color: var(--ink-55); }
.code { margin: .6rem 0 0; padding: 1rem 1.2rem; background: var(--bg-2); border: 1px solid var(--line); border-radius: .6rem; overflow-x: auto; font: 500 max(.78rem, 12.5px)/1.55 ui-monospace, "SF Mono", Menlo, monospace; color: var(--ink-75); }

/* prova sul telefono, sul foglio a quadretti */
.try__body {
  border-radius: var(--radius); padding: var(--c3v) var(--c3o);
  background-color: var(--cv-paper); color: var(--cv-ink);
  background-image: linear-gradient(var(--cv-grid) 1px, transparent 1px), linear-gradient(90deg, var(--cv-grid) 1px, transparent 1px);
  background-size: 1.6rem 1.6rem; background-position: -1px -1px;
}
.try__lead { color: var(--cv-ink); max-width: 34em; }
.try__after { color: var(--cv-ink-70); margin-top: 1.6rem; }
.check { list-style: none; margin: 1.8rem 0 0; padding: 0; border-top: 1.5px solid var(--cv-ink); }
.check__row { display: grid; grid-template-columns: 3rem 1fr auto; gap: var(--c1o); align-items: center; padding: .8rem 0; border-bottom: 1px solid var(--cv-ink-25); }
.check__n { color: var(--cv-ink-50); }
.check__t { font-size: 1.05rem; font-weight: 500; letter-spacing: -.015em; }
.check__opts { display: inline-flex; border: 1.5px solid var(--cv-ink); border-radius: 999px; overflow: hidden; }
.check__opts button { padding: .55em 1em; font-size: max(.66rem, 11px); font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--cv-ink-70); transition: background-color .3s, color .3s; }
.check__opts button + button { border-left: 1.5px solid var(--cv-ink); }
.check__opts button.is-on[data-v="si"] { background: var(--accent); color: var(--cv-ink); }
.check__opts button.is-on[data-v="no"] { background: var(--cv-ink); color: var(--cv-paper); }
.check__sum { margin-top: 1rem; color: var(--cv-ink-70); min-height: 1.3em; }
.pcard { margin-top: 1.8rem; border-top: 1.5px solid var(--cv-ink); }
.pcard__row { display: grid; grid-template-columns: 3rem 14rem 1fr; gap: var(--c1o); align-items: start; padding: .9rem 0; border-bottom: 1px solid var(--cv-ink-25); }
.pcard__n { color: var(--cv-ink-50); padding-top: .3rem; }
.pcard__t { font-weight: 600; padding-top: .15rem; }
.pcard textarea { width: 100%; resize: vertical; font: inherit; font-size: 1rem; line-height: 1.4; color: var(--cv-ink); background: transparent; border: 0; border-bottom: 1.5px dashed var(--cv-ink-25); padding: .1rem 0 .4rem; min-height: 2.6rem; }
.pcard textarea:focus { outline: none; border-bottom-color: var(--cv-ink); }
.pcard textarea::placeholder { color: var(--cv-ink-50); }
.pcard__saved { margin-top: 1rem; color: var(--cv-ink-50); }
.steps { margin: 1.6rem 0 1.8rem; padding-left: 1.2rem; display: grid; gap: .5rem; }

/* verifica */
.quiz__list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.quiz__q { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); padding: 1.8rem 0; border-bottom: 1px solid var(--line); }
.quiz__n { grid-column: 1 / span 2; padding-top: .45em; }
.quiz__body { grid-column: 3 / span 9; }
.quiz__text { font-size: 1.5rem; line-height: 1.15; letter-spacing: -.03em; font-weight: 500; max-width: 26em; }
.quiz__opts { display: flex; flex-direction: column; gap: .5rem; margin-top: 1.3rem; max-width: 40rem; }
.quiz__opt { display: grid; grid-template-columns: 2rem 1fr; align-items: center; gap: .8rem; text-align: left; padding: .75rem 1rem; border: 1px solid var(--line-2); border-radius: .7rem; transition: border-color .3s, background-color .3s, color .3s; }
.quiz__opt i { font-style: normal; width: 2rem; height: 2rem; border-radius: 50%; border: 1px solid var(--line-2); display: grid; place-items: center; font-size: var(--t-meta); font-weight: 700; color: var(--ink-55); }
@media (hover: hover) { .quiz__opt:hover { border-color: var(--ink); } }
.quiz__q.is-answered .quiz__opt { pointer-events: none; }
.quiz__q.is-answered .quiz__opt:not(.is-right):not(.is-wrong) { opacity: .45; }
.quiz__opt.is-right { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.quiz__opt.is-right i { border-color: var(--accent-ink); color: var(--accent-ink); }
.quiz__opt.is-wrong { border-color: var(--bad); color: var(--ink); }
.quiz__opt.is-wrong i { background: var(--bad); border-color: var(--bad); color: var(--bg); }
.quiz__why { margin-top: 1.1rem; max-width: 38em; color: var(--ink-75); padding-left: 1rem; border-left: 2px solid var(--accent); }
.quiz__why b { color: var(--ink); }
.quiz__score { margin-top: 1.6rem; font-size: var(--t-small); }
.quiz__reset { margin-left: .8em; }

/* parole nuove e fonti */
.words__grid { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); row-gap: 2.4rem; border-top: 1px solid var(--line); padding-top: 2rem; }
.words__col { grid-column: span 6; display: flex; flex-direction: column; gap: 1rem; }
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .45rem; }
.chip { display: inline-flex; padding: .5em 1em; border: 1px solid var(--line-2); border-radius: 999px; font-size: var(--t-small); font-weight: 500; transition: background-color .3s, color .3s, border-color .3s; }
.chip:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.sources { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .6rem; font-size: var(--t-small); color: var(--ink-75); }

/* avanti */
.next { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); row-gap: 2rem; align-items: end; border-top: 1px solid var(--line); }
.next__done { grid-column: 1 / span 4; display: flex; flex-direction: column; align-items: flex-start; gap: 1.2rem; }
.done-btn.is-done { background: var(--accent); border-color: var(--accent); }
.done-btn.is-done [hover="text"] { color: var(--accent-ink); }
.next__link { grid-column: 5 / span 8; display: grid; grid-template-columns: 1fr auto; row-gap: .6rem; align-items: end; }
.next__link .meta { grid-column: 1 / -1; }
.next__t { font-size: var(--t-h2); line-height: .94; letter-spacing: -.045em; font-weight: 500; text-wrap: balance; transition: color var(--dur-s) var(--ease-out); }
.next__arrow { font-size: var(--t-h2); line-height: .94; color: var(--accent); transition: transform var(--dur-m) var(--ease-out); }
@media (min-width: 992px) { .next__link:hover .next__t { color: var(--accent); } .next__link:hover .next__arrow { transform: translateX(.8rem); } }

/* ------------------------------------------------------------- 9. FOOTER */
.site-footer { position: relative; overflow: hidden; background: var(--bg); border-top: 1px solid var(--line); }
.footer__grid { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); row-gap: var(--c3v); padding: var(--c5v) var(--gutter) var(--c3v); }
.footer__grid .col { display: flex; flex-direction: column; gap: .35rem; font-size: var(--t-meta); color: var(--ink-55); }
.footer__grid .col b { color: var(--ink); font-weight: 600; letter-spacing: .1em; text-transform: uppercase; font-size: var(--t-meta); }
.footer__grid .col a { color: var(--ink); align-self: flex-start; }
.footer__grid .c1 { grid-column: 1 / span 3; } .footer__grid .c2 { grid-column: 4 / span 3; } .footer__grid .c3 { grid-column: 7 / span 3; } .footer__grid .c4 { grid-column: 10 / span 3; align-items: flex-end; text-align: right; }
.footer__grid .c4 a { align-self: flex-end; }
.footer__name { font-size: 13vw; line-height: .8; letter-spacing: -.06em; font-weight: 500; white-space: nowrap; padding: var(--c3v) var(--gutter) 0; color: var(--ink); }
.footer__name span { color: var(--accent); margin-left: .12em; }

#cursor > div { background: var(--accent); }
#cursor span { color: var(--accent-ink); font-weight: 600; }

/* ------------------------------------------------------------- 10. MOBILE */
@media (max-width: 991px) {
  :root {
    --t-display: 3.1rem; --t-h2: 2.4rem; --t-h3: 1.35rem; --t-statement: 1.7rem;
    --t-body: 1rem; --t-small: max(.85rem, 12.5px); --t-meta: max(.68rem, 10.5px); --gutter: 16px; --rail: 0px; --radius: .8rem;
  }
  body { font-size: 16px; }
  .lead { font-size: 1.1rem; }
  .section { padding-block: 4.5rem; }
  .section--tight { padding-block: 2.5rem; }
  .rail, .topnav { display: none; }
  .header-right .resume-link { display: none; }
  .burger { display: block; }
  .site-header { padding: 14px var(--gutter); align-items: center; }
  .brand__role { display: none; }
  .head-row { flex-direction: column; align-items: flex-start; gap: .8rem; }
  .head-row .meta { order: -1; }

  .hero-c { display: block; min-height: 0; padding-top: 6.5rem; padding-bottom: 2rem; }
  .hero-c__paper { min-height: 0; height: 62vw; max-height: 26rem; margin-top: 2.2rem; }
  .hero-c__cap { font-size: .95rem; }
  .numbers__list { grid-template-columns: repeat(2, 1fr); row-gap: 1.6rem; }
  .numbers__list b { font-size: 2.6rem; }

  .map__paper { padding: .6rem; margin-inline: calc(var(--gutter) * -1); border-radius: 0; }
  .map__table { min-width: 0; border-spacing: 0; }
  .map__table thead { display: none; }
  .map__table, .map__table tbody, .map__table tr, .map__table th, .map__table td { display: block; width: 100%; }
  .map__table tr { padding: .9rem .4rem 1rem; border-top: 1.5px solid var(--cv-ink); }
  .map__table tbody th { border: 0; padding: 0 0 .7rem; }
  .map__table tr { display: grid; grid-template-columns: 1fr 1fr; gap: .4rem; }
  .map__table tbody th { grid-column: 1 / -1; }
  .map__cell { min-height: 5.4rem; }
  .map__task { display: block; font-size: var(--t-meta); letter-spacing: .1em; text-transform: uppercase; font-weight: 700; color: var(--cv-ink-50); }
  a.map__cell .map__task { color: rgba(20,18,10,.6); }
  .map__empty { display: none !important; }

  .works__body { display: block; }
  .works__aside { margin-bottom: 1.6rem; }
  .wrow { grid-template-columns: 2.6rem 1fr auto; row-gap: .3rem; }
  .wrow .a { grid-column: 2; }
  .wrow .y { grid-column: 3; grid-row: 1; }
  .wrow .d { grid-column: 2 / span 2; }
  .crow .t { font-size: 1.35rem; }
  .crow .y { grid-row: 2; }

  .labhome__panel { padding: 2.4rem 1.1rem 1.4rem; }
  .labhome__steps { grid-template-columns: 1fr; }
  .inrow { grid-template-columns: 5.5rem 1fr; row-gap: .2rem; }
  .inrow span:nth-child(3) { grid-column: 2; }
  .inrow .meta { grid-column: 2; text-align: left; }
  .anatomy__list { grid-template-columns: 1fr; gap: 0; }
  .anatomy__list li { padding: 1rem 0; }
  .about__grid { display: block; }
  .about__text { margin-top: 1.2rem; }
  .faq__item summary { grid-template-columns: 2.4rem 1fr 1rem; }
  .faq__q { font-size: 1.1rem; }
  .faq__item .copy { padding-left: 0; }

  .page-hero, .les-hero { padding-top: 6.5rem; }
  .cblock { display: block; }
  .cblock__head { margin-bottom: 1.6rem; }
  .cblock__n { font-size: 3.6rem; }
  .cblock__t { font-size: 2rem; }
  .gl__group { display: block; }
  .gl__letter { display: block; margin-bottom: .6rem; font-size: 2.2rem; }
  .gl__item { grid-template-columns: 1fr; gap: .4rem; }

  .les-hero__learn li { grid-template-columns: 2.6rem 1fr; font-size: 1rem; }
  .cvs__track { height: calc(var(--chapters, 7) * 105vh + 60vh); }
  .cvs__stage { padding: 4.4rem .6rem .6rem; }
  .cvs__window, .cvs__stage[data-side="left"] .cvs__window { left: .6rem; right: .6rem; top: .6rem; bottom: auto; height: 46%; }
  .cvs__step, .cvs__stage[data-side="left"] .cvs__step { left: 1.1rem; right: 1.1rem; width: auto; top: calc(46% + 1.6rem); transform: translateY(1rem); }
  .cvs__step.is-active { transform: none; }
  .cvs__title { font-size: 1.5rem; margin: .5rem 0 .6rem; }
  .cvs__text { font-size: 14px; line-height: 1.45; }
  .cvs__tip { font-size: 12.5px; margin-top: .7rem; padding-top: .6rem; }
  .cvs__bar { left: .9rem; right: .9rem; bottom: .5rem; height: 2rem; gap: .7rem; }
  .cvs__tick { width: 1.6rem; height: 1.6rem; }
  .cvs__count { display: none; }

  .deep__item { display: block; padding: 1.6rem 0; }
  .deep__n { display: block; margin-bottom: .8rem; }
  .facts { grid-template-columns: 1fr; gap: .8rem; }
  .facts li { flex-direction: row; align-items: baseline; gap: 1rem; }
  .facts b { font-size: 1.6rem; min-width: 6.5rem; }
  .try__body { padding: 1.6rem 1rem; margin-inline: -6px; }
  .check__row { grid-template-columns: 2.2rem 1fr; row-gap: .6rem; }
  .check__opts { grid-column: 2; justify-self: start; }
  .pcard__row { grid-template-columns: 2.2rem 1fr; row-gap: .4rem; }
  .pcard textarea { grid-column: 1 / -1; }
  /* 16 pixel almeno, altrimenti Safari su iPhone ingrandisce la pagina quando si tocca il campo */
  .pcard textarea { font-size: max(1rem, 16px); }
  /* pulsanti della lista alti abbastanza per il dito */
  .check__opts button { min-height: 40px; }
  .quiz__q { display: block; padding: 1.4rem 0; }
  .quiz__n { display: block; margin-bottom: .6rem; }
  .quiz__text { font-size: 1.25rem; }
  .words__col { grid-column: 1 / -1; }
  .next { display: block; }
  .next__done { margin-bottom: 2.4rem; }

  .footer__grid { grid-template-columns: 1fr 1fr; padding: 3rem var(--gutter) 2rem; }
  .footer__grid .c1, .footer__grid .c2, .footer__grid .c3, .footer__grid .c4 { grid-column: auto; }
  .footer__grid .c3 { grid-column: 1 / -1; }
  .footer__grid .c4 { align-items: flex-start; text-align: left; }
  .footer__grid .c4 a { align-self: flex-start; }
  .footer__name { font-size: 16vw; }
}
@media (max-width: 600px) {
  .numbers__list span { font-size: 12.5px; }
  .map__table tr { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .cvs__window { transition: none; }
  .les-hero__arrow { animation: none; }
}

/* ============================================================================
   11. LA MAPPA (home)
   ============================================================================ */
body.is-map { overflow: hidden; overscroll-behavior: none; }
body.is-map main { padding-left: 0; }
.mapx { position: fixed; inset: 0; padding: 4.6rem var(--gutter) 1rem calc(var(--rail) + var(--gutter)); }
.mapx__paper { position: relative; height: 100%; border-radius: var(--radius); overflow: hidden; background: #cdbf9b; color: var(--cv-ink); }
.mapx__stage { position: absolute; inset: 0; touch-action: none; cursor: grab; outline: none; }
.mapx__stage:focus-visible { box-shadow: inset 0 0 0 3px var(--accent); }
.mapx__stage.is-dragging { cursor: grabbing; }
.mapx__stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.mapx__loading { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); color: var(--cv-ink-50); transition: opacity .6s; }
.mapx.is-ready .mapx__loading { opacity: 0; }
.mapx__labels { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }

/* etichette sopra gli oggetti */
.mlabel { position: absolute; left: 0; top: 0; pointer-events: auto; white-space: nowrap; font: inherit; color: var(--cv-ink); will-change: transform; }
.mlabel--course {
  display: inline-flex; align-items: center; gap: .55em; margin: 0; padding: .45em .8em .45em .45em;
  background: var(--cv-paper); border: 1.5px solid var(--cv-ink); border-radius: 999px; cursor: pointer;
  translate: -50% -100%; font-size: max(.78rem, 12.5px); font-weight: 600; letter-spacing: -.01em;
  transition: background-color .3s, color .3s;
}
.mlabel__n { display: grid; place-items: center; width: 1.9em; height: 1.9em; border-radius: 50%; background: var(--cv-ink); color: var(--cv-paper); font-size: .82em; font-weight: 700; }
.mlabel__t { font-size: 1.05em; }
.mlabel__s { display: inline-flex; align-items: center; gap: .35em; color: var(--cv-ink-50); font-weight: 600; font-size: .86em; }
.mlabel__lock { width: .8em; height: .8em; display: inline-block; background: no-repeat center / contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 14'%3E%3Crect x='1' y='6' width='10' height='7.5' rx='1.5' fill='%23262626'/%3E%3Cpath d='M3.3 6V4.2a2.7 2.7 0 0 1 5.4 0V6' fill='none' stroke='%23262626' stroke-width='1.6'/%3E%3C/svg%3E"); }
.mlabel--course.is-locked { background: rgba(242,236,220,.78); border-style: dashed; }
.is-far .mlabel--course { font-size: max(.68rem, 11px); padding: .3em .65em .3em .3em; gap: .4em; }
.is-far .mlabel__s { display: none; }
.mlabel--course.is-locked .mlabel__n { background: var(--cv-ink-50); }
.mlabel--course.is-done .mlabel__n { background: var(--accent); color: var(--cv-ink); }
@media (hover: hover) { .mlabel--course:hover { background: var(--accent); } }
.mlabel--here { translate: -50% -100%; background: var(--cv-ink); color: var(--accent); padding: .35em .7em; border-radius: 999px; font-size: max(.72rem, 11.5px); font-weight: 700; letter-spacing: .06em; text-transform: uppercase; pointer-events: none; }
.mlabel--here::after { content: ""; position: absolute; left: 50%; bottom: -5px; width: 10px; height: 10px; background: var(--cv-ink); transform: translateX(-50%) rotate(45deg); z-index: -1; }
.mlabel--start { translate: -50% 0; font-size: max(.72rem, 11.5px); font-weight: 600; color: var(--cv-ink-70); pointer-events: none; }
.mlabel--lesson { translate: 0 -50%; margin: 0; padding: .25em .55em; border: 0; background: rgba(242,236,220,.92); border-radius: .35em; font-size: max(.7rem, 11px); font-weight: 600; cursor: pointer; max-width: 16em; overflow: hidden; text-overflow: ellipsis; }
.mlabel--lesson span { color: var(--cv-ink-50); margin-right: .2em; }
.mlabel--lesson.is-locked, .mlabel--lesson.is-soon { color: var(--cv-ink-50); background: rgba(242,236,220,.7); }
.mlabel--lesson.is-done { background: var(--accent); }

/* riquadro di presentazione */
.mapx__intro {
  position: absolute; left: 1rem; top: 1rem; width: min(25rem, 38%); z-index: 3;
  background: var(--cv-paper); border: 1.5px solid var(--cv-ink); border-radius: .9rem; padding: 1.3rem 1.4rem 1.2rem;
  background-image: linear-gradient(var(--cv-grid) 1px, transparent 1px), linear-gradient(90deg, var(--cv-grid) 1px, transparent 1px);
  background-size: 1.6rem 1.6rem; background-position: -1px -1px;
}
.mapx__intro .meta { color: var(--cv-ink-50); }
.mapx__title { font-size: 2.3rem; line-height: .98; letter-spacing: -.045em; font-weight: 500; margin: .8rem 0 .9rem; text-wrap: balance; }
.mapx__lead { font-size: max(.9rem, 13.5px); line-height: 1.45; color: var(--cv-ink-70); }
.mapx__progress { margin-top: .9rem; font-size: max(.82rem, 12.5px); line-height: 1.4; color: var(--cv-ink-70); padding-top: .8rem; border-top: 1px dashed var(--cv-ink-25); min-height: 1.4em; }
.mapx__progress b { color: var(--cv-ink); }
.mapx__actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.pill--ink { border-color: var(--cv-ink); }
.pill--ink [hover="text"] { color: var(--cv-ink); }
.pill--ink [hover="bg"] { background: var(--cv-ink); }
@media (min-width: 992px) { .pill--ink:hover [hover="text"] { color: var(--cv-paper); } }
.mapx__fold { display: none; }

/* pannello della pietra o del corso scelto */
.mapx__panel {
  position: absolute; right: 1rem; top: 1rem; width: min(24rem, 34%); max-height: calc(100% - 5.6rem); overflow: auto; z-index: 4;
  background: var(--cv-paper); border: 1.5px solid var(--cv-ink); border-radius: .9rem; padding: 1.3rem 1.4rem 1.3rem;
  display: flex; flex-direction: column; gap: .8rem; overscroll-behavior: contain;
}
.mapx__panel[hidden] { display: none; }
.mapx__panel .meta { color: var(--cv-ink-50); }
.mpanel__x { position: absolute; right: .7rem; top: .6rem; width: 2rem; height: 2rem; border-radius: 50%; font-size: 1.3rem; line-height: 1; color: var(--cv-ink-70); }
.mpanel__x:hover { background: var(--cv-ink-12); color: var(--cv-ink); }
.mpanel__t { font-size: 1.9rem; line-height: 1; letter-spacing: -.04em; font-weight: 500; padding-right: 1.6rem; text-wrap: balance; }
.mpanel__lead { font-size: max(.9rem, 13.5px); line-height: 1.45; color: var(--cv-ink-70); }
.mpanel__tool { font-size: max(.82rem, 12.5px); }
.mpanel__state { display: inline-flex; align-items: center; gap: .5em; font-size: max(.72rem, 11px); font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.mpanel__state i { width: .8em; height: .8em; border-radius: 50%; border: 1.5px solid var(--cv-ink); }
.mpanel__state--done i { background: var(--accent); }
.mpanel__state--locked, .mpanel__state--soon { color: var(--cv-ink-50); }
.mpanel__state--soon i { border-style: dashed; }
.mpanel__lock, .locknote { display: flex; gap: .7rem; align-items: flex-start; font-size: max(.85rem, 13px); line-height: 1.45; padding: .8rem .9rem; border-radius: .6rem; background: rgba(38,38,38,.07); }
.mpanel__lock i, .locknote__ico, .lockscreen__ico { flex: none; width: 1.1rem; height: 1.25rem; margin-top: .1rem; background: no-repeat center / contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 14'%3E%3Crect x='1' y='6' width='10' height='7.5' rx='1.5' fill='%23262626'/%3E%3Cpath d='M3.3 6V4.2a2.7 2.7 0 0 1 5.4 0V6' fill='none' stroke='%23262626' stroke-width='1.6'/%3E%3C/svg%3E"); }
.mpanel__soon { font-size: max(.85rem, 13px); color: var(--cv-ink-70); }
.mpanel__actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.mpanel__course { align-self: flex-start; color: var(--cv-ink-70); }
.mpanel__list { list-style: none; margin: 0; padding: 0; border-top: 1.5px solid var(--cv-ink); }
.mpanel__list button { width: 100%; display: grid; grid-template-columns: 3rem 1fr 1rem; gap: .5rem; align-items: center; text-align: left; padding: .6rem 0; border-bottom: 1px solid var(--cv-ink-25); font-size: max(.88rem, 13px); font-weight: 500; }
.mpanel__list button:hover span:nth-child(2) { text-decoration: underline; }
.mpanel__list i { width: .8rem; height: .8rem; border-radius: 50%; border: 1.5px solid var(--cv-ink); }
.mpanel__list .is-done i { background: var(--accent); }
.mpanel__list .is-soon i { border-style: dashed; opacity: .6; }
.mpanel__list .is-locked, .mpanel__list .is-soon { color: var(--cv-ink-50); }

/* comandi, legenda, suggerimento */
.mapx__tools { position: absolute; right: 1rem; bottom: 1rem; display: flex; gap: .35rem; z-index: 3; }
.mapx__tools button { height: 2.4rem; min-width: 2.4rem; padding: 0 .8rem; border-radius: 999px; background: var(--cv-paper); border: 1.5px solid var(--cv-ink); font-size: 1rem; font-weight: 600; color: var(--cv-ink); }
.mapx__tools .mapx__txt { font-size: max(.68rem, 11px); letter-spacing: .06em; text-transform: uppercase; font-weight: 700; }
.mapx__tools button:hover { background: var(--accent); }
.mapx__txt { display: inline-flex; align-items: center; gap: .45em; }
.mapx__ico { display: none; position: relative; width: 14px; height: 14px; }
.mapx__ico--here { border-radius: 50%; border: 2px solid var(--cv-ink); }
.mapx__ico--here::after { content: ""; position: absolute; inset: 3px; border-radius: 50%; background: var(--cv-ink); }
.mapx__ico--all { border: 2px solid var(--cv-ink); border-radius: 3px; }
.mapx__ico--all::after { content: ""; position: absolute; inset: 2px; border: 1.5px dashed var(--cv-ink); border-radius: 1px; }
.mapx__legend { position: absolute; left: 1rem; bottom: 1rem; list-style: none; margin: 0; padding: .55rem .8rem; display: flex; gap: 1rem; z-index: 2; background: rgba(242,236,220,.9); border-radius: 999px; font-size: max(.68rem, 11px); font-weight: 600; }
.mapx__legend li { display: inline-flex; align-items: center; gap: .4em; }
.lg { width: .9rem; height: .9rem; border-radius: .2rem; border: 1.5px solid var(--cv-ink); display: inline-block; }
.lg--done { background: var(--accent); }
.lg--todo { background: var(--cv-paper); }
.lg--lock { border-color: #8a8373; }
.lg--soon { border-style: dashed; border-color: #8a8373; }
.mapx__hint { position: absolute; left: 50%; bottom: 1.4rem; transform: translateX(-50%); z-index: 2; color: var(--cv-ink-70); background: rgba(242,236,220,.9); padding: .45rem .8rem; border-radius: 999px; transition: opacity .6s; pointer-events: none; white-space: nowrap; }
.mapx__hint.is-gone { opacity: 0; }

/* elenco: per chi non vede la mappa e per chi usa un lettore di schermo */
.mapx__list { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.mapx:not(.no-gl) .mapx__nogl, .mapx.no-gl .mapx__sigl { display: none; }
.mapx.no-gl .mapx__list { position: absolute; inset: 0; width: auto; height: auto; clip-path: none; white-space: normal; overflow: auto; padding: 1.4rem 1.4rem 1.4rem calc(min(25rem, 38%) + 2.4rem); background: var(--cv-paper); }
.mapx.no-gl .mapx__stage, .mapx.no-gl .mapx__tools, .mapx.no-gl .mapx__legend, .mapx.no-gl .mapx__hint { display: none; }
.mapx__list > ol { list-style: none; margin: 1rem 0 0; padding: 0; display: grid; gap: 1.2rem; }
.mapx__list > ol > li > a { font-size: 1.4rem; font-weight: 500; letter-spacing: -.03em; }
.mapx__list ol ol { list-style: none; margin: .4rem 0 0; padding: 0; font-size: max(.88rem, 13px); display: grid; gap: .2rem; }
.mapx__list li.is-done > a::after { content: " ✓"; }
.mapx__list li.is-locked > a { color: var(--cv-ink-50); }

@media (max-width: 991px) {
  .mapx { padding: 60px 6px 6px; }
  .mapx__paper { border-radius: .8rem; }
  .mapx__intro { left: .5rem; right: .5rem; top: auto; bottom: .5rem; width: auto; padding: 1rem 1rem .9rem; transition: transform .5s var(--ease-out); }
  .mapx__title { font-size: 1.55rem; margin: .5rem 0 .5rem; }
  .mapx__lead { font-size: 13.5px; }
  .mapx__fold { display: block; position: absolute; right: .8rem; top: .7rem; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--cv-ink-70); }
  .mapx__intro.is-folded { transform: translateY(calc(100% - 3.1rem)); }
  .mapx__intro.is-folded .mapx__fold { top: .8rem; }
  .has-panel .mapx__intro { transform: translateY(calc(100% + 1rem)); }
  .mapx__panel { left: .5rem; right: .5rem; top: auto; bottom: .5rem; width: auto; max-height: 62%; padding: 1.1rem 1rem 1rem; }
  .mpanel__t { font-size: 1.5rem; }
  .mapx__tools { top: .5rem; right: .5rem; bottom: auto; flex-direction: column; }
  .mapx__tools button { height: 38px; width: 38px; min-width: 0; padding: 0; display: grid; place-items: center; font-size: 18px; }
  .mapx__txt span:last-child { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .mapx__ico { display: block; }
  .mapx__legend { display: none; }
  .mapx__hint { top: .6rem; left: .6rem; transform: none; bottom: auto; font-size: 11px; white-space: normal; text-align: left; max-width: calc(100% - 64px); border-radius: .6rem; }
  .mlabel--course { font-size: 12px; }
  .mapx.no-gl .mapx__list { padding: 1rem 1rem 14rem; }
}
@media (max-width: 991px) and (max-height: 560px) {
  .mapx__tools { flex-direction: row; }
  .mapx__tools .mapx__txt { display: none; }
  .mapx__legend { display: none; }
  .mapx__title { font-size: 1.3rem; }
  .mapx__intro { max-width: 30rem; }
  .mapx__panel { max-height: 78%; max-width: 30rem; left: auto; }
}

/* ============================================================================
   12. SBLOCCHI, RIMANDI, RICERCA
   ============================================================================ */

/* pagina chiusa */
.lockscreen { position: fixed; inset: 0; z-index: 70; display: grid; grid-template-columns: minmax(0, 1fr); place-items: center; padding: 5rem var(--gutter) 2rem calc(var(--rail) + var(--gutter)); background: rgba(17,17,17,.82); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.lockscreen__card {
  width: min(38rem, 100%); background: var(--cv-paper); color: var(--cv-ink); border-radius: var(--radius); padding: 2.2rem 2.2rem 2rem; display: flex; flex-direction: column; gap: 1rem;
  background-image: linear-gradient(var(--cv-grid) 1px, transparent 1px), linear-gradient(90deg, var(--cv-grid) 1px, transparent 1px); background-size: 1.6rem 1.6rem;
}
.lockscreen__card .meta { color: var(--cv-ink-50); }
.lockscreen__card .h2 { font-size: 2.6rem; max-width: 12em; }
.lockscreen__card .copy { color: var(--cv-ink-70); }
.lockscreen__ico { width: 1.8rem; height: 2rem; }
.lockscreen__actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: .4rem; }
/* sul telefono il pulsante con il nome lungo della lezione va a capo invece di allargare la scheda */
.lockscreen__actions .pill { max-width: 100%; white-space: normal; text-align: center; }
.lockscreen .pill:not(.pill--accent) { border-color: var(--cv-ink); }
.lockscreen .pill:not(.pill--accent) [hover="text"] { color: var(--cv-ink); }
body.is-locked-page { overflow: hidden; }

/* corsi e lezioni chiusi negli elenchi */
.locknote { margin-top: .4rem; background: rgba(255,255,255,.06); color: var(--ink-75); max-width: 30rem; }
.locknote[hidden] { display: none; }
.locknote__ico { filter: invert(1); }
.locknote b { color: var(--ink); }
.cblock.is-locked .lessons { opacity: .55; }
.lrow.is-locked .t a { pointer-events: none; color: var(--ink-55); }
.lrow.is-locked .lrow__done { border-style: dashed; }
.lrow.is-locked .a .status::after { content: " · chiusa"; }

/* stato della lezione in fondo alla pagina */
.done-state { display: inline-flex; align-items: center; gap: .7em; font-size: var(--t-small); color: var(--ink-75); max-width: 22em; }
.done-state__dot { flex: none; width: 1.1rem; height: 1.1rem; border-radius: 50%; border: 1.5px dashed var(--ink-35); }
.done-state.is-done { color: var(--ink); }
.done-state.is-done .done-state__dot { background: var(--accent); border: 0; }

/* avviso a comparsa */
.toast {
  position: fixed; right: 1.2rem; bottom: 1.2rem; z-index: 95; width: min(24rem, calc(100vw - 2rem));
  display: flex; flex-direction: column; gap: .6rem; padding: 1.2rem 1.3rem 1.2rem; border-radius: .9rem;
  background: var(--cv-paper); color: var(--cv-ink); transform: translateY(1rem); opacity: 0; transition: transform .6s var(--ease-out), opacity .6s var(--ease-out);
}
.toast.is-in { transform: none; opacity: 1; }
.toast b { font-size: 1.35rem; font-weight: 500; letter-spacing: -.03em; line-height: 1.05; padding-right: 1.5rem; }
.toast span { font-size: max(.88rem, 13px); color: var(--cv-ink-70); line-height: 1.4; }
.toast .pill { align-self: flex-start; }
.toast__x { position: absolute; right: .7rem; top: .6rem; width: 1.8rem; height: 1.8rem; font-size: 1.2rem; color: var(--cv-ink-70); }
.toast--big { background: var(--accent); }
.toast--big span { color: rgba(20,18,10,.8); }

/* richiami nel testo: link al capitolo che spiega il concetto */
.ref { text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: .18em; text-decoration-color: rgba(255,209,26,.9); color: inherit; font-weight: 600; }
.ref sup { font-size: .62em; font-weight: 700; margin-left: .15em; padding: .05em .35em; border-radius: 999px; background: rgba(255,209,26,.35); vertical-align: .55em; letter-spacing: 0; white-space: nowrap; }
.ref--gloss { text-decoration-style: dashed; }
.ref:hover { background: rgba(255,209,26,.25); }
.refpop {
  position: fixed; z-index: 96; width: min(20rem, calc(100vw - 24px)); padding: 1rem 1.1rem .9rem; border-radius: .8rem;
  background: var(--bg-3); color: var(--ink); border: 1px solid var(--line-2); box-sizing: border-box;
  display: flex; flex-direction: column; gap: .5rem; font-size: max(.85rem, 13px); line-height: 1.45;
}
.refpop b { font-size: 1.05rem; font-weight: 600; letter-spacing: -.02em; color: var(--accent); }
.refpop p { color: var(--ink-75); }
.refpop__go { display: flex; flex-direction: column; gap: .15rem; margin-top: .3rem; padding-top: .6rem; border-top: 1px solid var(--line); font-weight: 600; }
.refpop__go:hover span:last-child { color: var(--accent); }

/* "Ti serve sapere" e "Parole nuove" */
.les-hero__cols { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--c1o); row-gap: 2rem; margin-top: 2.6rem; }
.les-hero__cols .les-hero__learn { grid-column: 1 / span 7; margin-top: 0; }
.les-hero__need, .les-hero__first { grid-column: 9 / span 4; }
.les-hero__first { align-self: start; padding-top: .2rem; }
.need { list-style: none; margin: .9rem 0 0; padding: 0; border-top: 1px solid var(--line); }
.need__a { display: grid; grid-template-columns: 1fr auto 1rem; gap: .8rem; align-items: baseline; padding: .7rem 0; border-bottom: 1px solid var(--line); }
.need__a b { font-weight: 500; font-size: 1.05rem; letter-spacing: -.015em; }
.need__a span { font-size: var(--t-meta); color: var(--ink-55); white-space: nowrap; }
.need__a i { font-style: normal; color: var(--accent); transition: transform var(--dur-s) var(--ease-out); }
.need__a:hover b { color: var(--accent); }
.need__a:hover i { transform: translateX(.3rem); }
.need__hint { margin-top: .8rem; }
.terms { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .45rem; }
.terms__a { display: inline-flex; align-items: baseline; gap: .6em; padding: .55em 1em; border: 1px solid var(--line-2); border-radius: 999px; font-size: var(--t-small); transition: background-color .3s, color .3s, border-color .3s; }
.terms__a b { font-weight: 600; }
.terms__a span { font-size: .85em; color: var(--ink-55); }
.terms__a:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.terms__a:hover span { color: rgba(20,18,10,.7); }

/* punto d'arrivo di un rimando */
.is-target { animation: target-flash 2.4s var(--ease-out); }
.cvs__step.is-target .cvs__title { animation: target-mark 2.4s var(--ease-out); }
@keyframes target-flash { 0%, 30% { background: rgba(255,209,26,.18); } 100% { background: transparent; } }
@keyframes target-mark { 0%, 40% { background: linear-gradient(transparent 55%, rgba(255,209,26,.8) 55%); } 100% { background: linear-gradient(transparent 55%, rgba(255,209,26,0) 55%); } }

/* glossario: dove è spiegata ogni parola */
.gl__home { display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: .4em; margin-top: .6rem; padding: .45em .8em; border: 1px solid var(--line-2); border-radius: .5rem; font-size: var(--t-small); color: var(--ink-75); }
.gl__home b { color: var(--accent); font-variant-numeric: tabular-nums; }
.gl__home i { font-style: normal; color: var(--accent); }
a.gl__home:hover { border-color: var(--accent); color: var(--ink); }
.gl__home--soon { border-style: dashed; }

/* il percorso in Come funziona */
.path__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--c1o); }
.path__list li { display: flex; flex-direction: column; gap: .6rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.path__n { font-size: 2.6rem; font-weight: 500; letter-spacing: -.05em; line-height: .9; color: var(--accent); }
.path__list b { font-size: 1.3rem; font-weight: 500; letter-spacing: -.03em; }
.path__list span:last-child { font-size: var(--t-small); color: var(--ink-55); max-width: 26em; }
.path__note { margin-top: 2rem; }

/* ricerca */
.search-btn { display: inline-flex; align-items: center; gap: .55em; height: 2.3rem; padding: 0 .55em 0 .8em; border: 1px solid var(--line-2); border-radius: 999px; font-size: max(.66rem, 11px); font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--ink-75); transition: border-color .3s, color .3s; }
.search-btn:hover { color: var(--ink); border-color: var(--ink); }
/* il selettore della lingua, IT · EN. Sul telefono stretto sta nel menu */
.lang-switch { display: inline-flex; align-items: stretch; height: 2.3rem; padding: .22rem; border: 1px solid var(--line-2); border-radius: 999px; }
.lang-switch a { display: inline-flex; align-items: center; justify-content: center; min-width: 2.15rem; padding: 0 .5em; border-radius: 999px; font-size: max(.66rem, 11px); font-weight: 600; letter-spacing: .06em; color: var(--ink-55); transition: color .3s, background-color .3s; }
@media (hover: hover) { .lang-switch a:hover { color: var(--ink); } }
.lang-switch a.is-on { background: var(--accent); color: var(--accent-ink); }
.mobile-menu .lang-switch { display: none; align-self: flex-start; height: 2.7rem; margin-top: .4rem; border-color: rgba(20,18,10,.3); }
.mobile-menu .lang-switch a { min-width: 2.8rem; font-size: .95rem; letter-spacing: .06em; color: var(--accent-ink); opacity: .7; }
.mobile-menu .lang-switch a.is-on { background: var(--accent-ink); color: var(--accent); opacity: 1; }
@media (max-width: 600px) {
  .header-right > .lang-switch { display: none; }
  .mobile-menu .lang-switch { display: inline-flex; }
}
.search-btn__ico, .search__ico { width: .95em; height: .95em; border: 1.6px solid currentColor; border-radius: 50%; position: relative; display: inline-block; }
.search-btn__ico::after, .search__ico::after { content: ""; position: absolute; width: .45em; height: 1.6px; background: currentColor; right: -.38em; bottom: -.12em; transform: rotate(45deg); }
.search-btn kbd { font: inherit; font-size: .9em; padding: .15em .45em; border-radius: .3em; background: rgba(255,255,255,.1); color: var(--ink-55); }
.search { position: fixed; inset: 0; z-index: 120; background: rgba(17,17,17,.78); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); display: flex; justify-content: center; align-items: flex-start; padding: 12vh 16px 16px; }
.search[hidden] { display: none; }
.search__box { width: min(40rem, 100%); max-height: 76vh; display: flex; flex-direction: column; background: var(--cv-paper); color: var(--cv-ink); border-radius: var(--radius); overflow: hidden; }
.search__head { display: flex; align-items: center; gap: .8rem; padding: 1rem 1.1rem; border-bottom: 1.5px solid var(--cv-ink); }
.search__ico { font-size: 1.2rem; color: var(--cv-ink-70); }
.search__input { flex: 1; min-width: 0; font: inherit; font-size: max(1.2rem, 17px); font-weight: 500; letter-spacing: -.02em; border: 0; background: transparent; color: var(--cv-ink); outline: none; }
.search__input::placeholder { color: var(--cv-ink-50); }
.search__close { font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--cv-ink-70); padding: .4em .7em; border: 1px solid var(--cv-ink-25); border-radius: .4em; }
.search__help { padding: .6rem 1.1rem 0; color: var(--cv-ink-50); }
.search__list { list-style: none; margin: 0; padding: .4rem .6rem .8rem; overflow: auto; }
.search__label { padding: .6rem .5rem .2rem; color: var(--cv-ink-50); }
.search__item a { display: grid; grid-template-columns: 6.2rem 1fr; column-gap: .8rem; row-gap: .15rem; padding: .75rem .6rem; border-radius: .6rem; }
.search__item.is-sel a, .search__item a:hover { background: rgba(255,209,26,.45); }
.search__kind { grid-row: span 3; font-size: 10.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--cv-ink-50); padding-top: .25rem; }
.search__item b { font-size: 1.08rem; font-weight: 600; letter-spacing: -.02em; }
.search__where { font-size: max(.78rem, 12px); font-weight: 600; color: var(--cv-ink-70); }
.search__d { font-size: max(.8rem, 12.5px); color: var(--cv-ink-50); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.search__empty { padding: 1rem .6rem; font-size: max(.9rem, 13.5px); color: var(--cv-ink-70); }
.search__empty .u-link { color: var(--cv-ink); font-weight: 600; }
html.search-open { overflow: hidden; }

@media (max-width: 991px) {
  .search-btn { height: 2.2rem; padding: 0 .7em; }
  .search-btn__t, .search-btn kbd { display: none; }
  .header-right { gap: .6rem; }
  .les-hero__cols { display: block; }
  .les-hero__need, .les-hero__first { margin-top: 2rem; }
  .path__list { grid-template-columns: 1fr; gap: 0; }
  .path__list li { padding: 1rem 0; }
  .lockscreen { padding: 4.5rem 12px 12px; align-items: end; }
  .lockscreen__card { padding: 1.6rem 1.3rem 1.4rem; }
  .lockscreen__card .h2 { font-size: 1.9rem; }
  .search { padding: 10px; }
  .search__box { max-height: calc(100svh - 20px); }
  .search__item a { grid-template-columns: 1fr; }
  .search__kind { grid-row: auto; padding: 0; }
  .toast { right: .6rem; left: .6rem; bottom: .6rem; width: auto; }
}

/* anteprima della sola scena (?scena=0.4), per chi scrive le lezioni */
html.scene-only body > *:not(main), html.scene-only main > *:not(.cvs), html.scene-only #cursor { display: none !important; }
html.scene-only main { padding: 0; }
html.scene-only .cvs__track { height: 100vh; }
html.scene-only .cvs__stage { position: fixed; inset: 0; padding: 12px; }
html.scene-only .cvs__step { transition: none; }

/* ============================================================================
   13. STRUMENTI DENTRO LE LEZIONI (assets/js/tools/*)
   Stanno sul foglio a quadretti di "Prova sul telefono": inchiostro su carta.
   ============================================================================ */
.tool { margin-top: 1.8rem; color: var(--cv-ink); }
.tool__wait { color: var(--cv-ink-50); }
.tool .label { color: var(--cv-ink-70); }
.tool__head { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.4rem; }
.tool__status { color: var(--cv-ink-70); max-width: 34em; }
.tool .pill.is-disabled { opacity: .45; pointer-events: none; }
.try__links { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.2rem; }
.try__sub { margin-top: 2.4rem; }
.tool [hidden] { display: none !important; }

/* pulsanti a scelta */
.segs { display: flex; flex-wrap: wrap; gap: .35rem; }
.seg { display: inline-flex; align-items: center; gap: .45em; padding: .55em .9em; border: 1.5px solid var(--cv-ink); border-radius: 999px; font-size: max(.8rem, 12.5px); font-weight: 600; color: var(--cv-ink); background: rgba(242,236,220,.6); transition: background-color .25s, color .25s; }
@media (hover: hover) { .seg:hover:not(:disabled) { background: rgba(255,209,26,.35); } }
.seg.is-on { background: var(--cv-ink); color: var(--cv-paper); }
.seg.is-right { background: var(--accent); color: var(--cv-ink); }
.seg.is-wrong { background: transparent; color: var(--bad); border-color: var(--bad); text-decoration: line-through; }
.seg:disabled { cursor: default; }
.seg:disabled:not(.is-right):not(.is-wrong) { opacity: .45; }
.dot { width: .8em; height: .8em; border-radius: 50%; display: inline-block; border: 1.5px solid var(--cv-ink); }
.dot--y { background: var(--accent); }
.dot--k { background: var(--cv-ink); }
.seg.is-on .dot--k { border-color: var(--cv-paper); }

/* misura il tuo telefono */
.mrows { list-style: none; margin: 1.6rem 0 0; padding: 0; border-top: 1.5px solid var(--cv-ink); }
.mrows[hidden] { display: none; }
.mrow { display: grid; grid-template-columns: 11rem 1fr; column-gap: var(--c1o); row-gap: .15rem; padding: .7rem 0; border-bottom: 1px solid var(--cv-ink-25); animation: mrow-in .5s var(--ease-out) both; }
.mrow__k { font-size: max(.72rem, 11px); letter-spacing: .1em; text-transform: uppercase; font-weight: 700; color: var(--cv-ink-70); padding-top: .2em; }
.mrow__v { font-size: 1.1rem; font-weight: 600; letter-spacing: -.015em; }
.mrow__h { grid-column: 2; color: var(--cv-ink-50); }
@keyframes mrow-in { from { opacity: 0; transform: translateY(.4rem); } }
.mbench { margin-top: 2rem; display: flex; flex-direction: column; gap: .8rem; }
.mbench[hidden] { display: none; }
.mbar { display: grid; grid-template-columns: 3.4rem 1fr 7rem; gap: 1rem; align-items: center; }
.mbar__k { font-weight: 700; font-size: 1rem; }
.mbar__track { height: 1.6rem; border: 1.5px solid var(--cv-ink); border-radius: .4rem; overflow: hidden; background: rgba(38,38,38,.04); }
.mbar__track i { display: block; height: 100%; background: var(--accent); transform-origin: left; transform: scaleX(0); transition: transform 1.2s var(--ease-out); }
.mbar[data-bar="cpu"] .mbar__track i { background: var(--cv-ink); }
.mbar b { font-size: 1.25rem; font-weight: 600; letter-spacing: -.02em; font-variant-numeric: tabular-nums; text-align: right; }
.mbar.is-nd { grid-template-columns: 3.4rem 1fr auto; }
.mbar.is-nd b { font-size: max(.82rem, 13px); font-weight: 500; letter-spacing: 0; color: var(--cv-ink-70); white-space: nowrap; }
.mbench__note { font-size: max(.92rem, 14px); line-height: 1.5; color: var(--cv-ink-70); max-width: 42em; margin-top: .4rem; }
.mbench__note b { color: var(--cv-ink); }

/* insegna a una rete piccola */
.nn { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 1.6rem; align-items: start; }
.nn__board { display: flex; flex-direction: column; gap: .7rem; }
.nn__canvas { width: 100%; display: block; border: 1.5px solid var(--cv-ink); border-radius: .6rem; touch-action: manipulation; cursor: crosshair; background: var(--cv-paper); }
.nn__pen { display: flex; gap: .35rem; }
.nn__side { display: flex; flex-direction: column; gap: 1.1rem; }
.nn__group { display: flex; flex-direction: column; gap: .5rem; }
.nn__run { display: flex; flex-wrap: wrap; gap: .45rem; }
.nn__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; border-top: 1.5px solid var(--cv-ink); padding-top: .8rem; }
.nn__stats p { display: flex; flex-direction: column; gap: .2rem; }
.nn__stats .meta { color: var(--cv-ink-50); }
.nn__stats b { font-size: 1.3rem; font-weight: 600; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.nn__chart { width: 100%; display: block; }

/* in quale casella sta */
.cas { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 2rem; align-items: start; }
.cas__card { display: flex; flex-direction: column; gap: 1rem; }
.cas__card > .meta { color: var(--cv-ink-50); }
.cas__q { font-size: 1.55rem; line-height: 1.15; letter-spacing: -.03em; font-weight: 500; max-width: 22em; text-wrap: balance; }
.cas__pick { display: flex; flex-direction: column; gap: .55rem; }
.cas__pick .label { margin-top: .4rem; }
.cas__foot { display: flex; gap: .5rem; }
.cas__foot [hidden] { display: none; }
.cas__fb { padding: 1rem 1.1rem; border-radius: .6rem; background: rgba(38,38,38,.06); font-size: max(.92rem, 14px); line-height: 1.5; display: flex; flex-direction: column; gap: .5rem; }
.cas__fb[hidden] { display: none; }
.cas__fb b { font-size: 1.05rem; }
.cas__lesson { color: var(--cv-ink-70); }
.cas__lesson .u-link { color: var(--cv-ink); font-weight: 600; }
.cas__map .label { display: block; margin-bottom: .7rem; }
.cas__grid { border-collapse: separate; border-spacing: 3px; width: 100%; table-layout: fixed; }
.cas__grid thead th { height: 6.5rem; vertical-align: bottom; padding: 0; }
.cas__grid thead th span { display: inline-block; writing-mode: vertical-rl; transform: rotate(180deg); font-size: 11px; font-weight: 700; letter-spacing: .04em; color: var(--cv-ink-70); white-space: nowrap; }
.cas__grid tbody th { font-size: 11.5px; font-weight: 600; text-align: right; padding-right: .5rem; width: 6.2rem; color: var(--cv-ink-70); }
/* con table-layout fixed le colonne prendono la larghezza dalla prima riga, quindi la colonna dei nomi la dà la cella d'angolo */
.cas__grid thead th:first-child { width: 6.2rem; }
.cas__grid td { height: 1.9rem; border: 1.5px solid var(--cv-ink-25); border-radius: .3rem; text-align: center; font-size: 11px; font-weight: 700; }
.cas__grid td.is-right { background: var(--accent); border-color: var(--cv-ink); }
.cas__grid td.is-seen { background: rgba(38,38,38,.12); border-color: var(--cv-ink-50); }
.cas__score { margin-top: .8rem; color: var(--cv-ink-70); }

/* fotocamera dal vivo: rilevatore e segmentazione */
.cam__stage { position: relative; margin-top: 1.4rem; max-width: 44rem; border: 1.5px solid var(--cv-ink); border-radius: .8rem; overflow: hidden; background: var(--cv-ink); }
.cam__stage[hidden], .cam__ctl[hidden], .cam [hidden] { display: none; }
.cam__view { display: block; width: 100%; height: auto; max-height: 72vh; object-fit: contain; }
.cam__hud { position: absolute; left: .6rem; right: .6rem; top: .6rem; display: flex; align-items: center; gap: .4rem; }
.cam__ms { margin-right: auto; padding: .35em .75em; border-radius: 999px; background: rgba(38,38,38,.78); color: var(--cv-paper); font-size: 12px; font-weight: 700; font-variant-numeric: tabular-nums; }
.cam__btn { padding: .4em .85em; border: 1.5px solid var(--cv-ink); border-radius: 999px; background: var(--cv-paper); color: var(--cv-ink); font-size: 12px; font-weight: 700; }
@media (hover: hover) { .cam__btn:hover { background: var(--accent); } }
.cam__ctl { display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: flex-start; margin-top: 1.1rem; max-width: 44rem; }
.cam__range { display: flex; flex-direction: column; gap: .45rem; flex: 1 1 14rem; }
.cam__range input[type="range"] { width: 100%; margin: 0; accent-color: var(--cv-ink); }
.cam__range .label b { color: var(--cv-ink); font-variant-numeric: tabular-nums; margin-left: .3em; }
.cam__out { margin-top: .9rem; max-width: 44rem; min-height: 1.5em; font-size: 1.1rem; font-weight: 600; letter-spacing: -.015em; line-height: 1.35; }

/* spettrogramma dal vivo */
.spt__board { display: flex; flex-direction: column; gap: 1.1rem; margin-top: 1.4rem; max-width: 52rem; }
.spt__board[hidden] { display: none; }
.spt__row { display: flex; flex-direction: column; gap: .45rem; }
.spt__wave, .spt__spec canvas { display: block; width: 100%; border: 1.5px solid var(--cv-ink); border-radius: .6rem; background: var(--cv-paper); }
.spt__wave { height: 80px; }
.spt__spec { position: relative; }
.spt__spec canvas { height: 220px; image-rendering: pixelated; }
.spt__axis { position: absolute; inset: 0; pointer-events: none; }
.spt__axis span { position: absolute; left: .5rem; transform: translateY(-50%); padding: .05em .4em; border-radius: .3em; background: rgba(242,236,220,.85); font-size: 10.5px; font-weight: 700; color: var(--cv-ink-70); font-variant-numeric: tabular-nums; }
.spt__axis span:first-child { transform: translateY(-80%); }
.spt__axis span:last-child { transform: translateY(0); top: .3rem !important; }
.spt__ctl { display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: center; }
.spt__out { font-size: 1.1rem; font-weight: 600; letter-spacing: -.015em; min-height: 1.5em; }

/* tracce dal vivo */
.trc__board { display: flex; flex-direction: column; gap: 1rem; margin-top: 1.4rem; max-width: 52rem; }
.trc__legend { display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; font-size: 12px; font-weight: 700; color: var(--cv-ink-70); }
.trc__legend span { display: inline-flex; align-items: center; gap: .4em; }
.trc__legend i { width: 1.1em; height: .3em; border-radius: 2px; display: inline-block; }
.trc__legend i.trc__win { height: .9em; background: rgba(255,209,26,.45); border: 1px solid var(--cv-ink-25); }
.trc__row { display: flex; flex-direction: column; gap: .45rem; }
.trc__row canvas { display: block; width: 100%; height: 130px; border: 1.5px solid var(--cv-ink); border-radius: .6rem; background: var(--cv-paper); }
.trc__ctl { display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: center; }
.trc__feat { list-style: none; margin: 0; padding: .9rem 0 0; border-top: 1.5px solid var(--cv-ink); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .9rem 1rem; }
.trc__feat li { display: flex; flex-direction: column; gap: .2rem; }
.trc__feat .meta { color: var(--cv-ink-50); }
.trc__feat b { font-size: 1.25rem; font-weight: 600; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }

/* ci sta nel mio telefono */
.cs { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 2rem; align-items: start; }
.cs__pick { display: flex; flex-direction: column; gap: 1rem; }
.cs__g { display: flex; flex-direction: column; gap: .45rem; }
.cs__hint { color: var(--cv-ink-50); max-width: 34em; }
.cs__res { display: flex; flex-direction: column; gap: 1.2rem; padding: 1.2rem 1.3rem; border: 1.5px solid var(--cv-ink); border-radius: .8rem; background: rgba(242,236,220,.7); }
.cs__verdict { font-size: 1.45rem; line-height: 1.2; letter-spacing: -.025em; font-weight: 500; }
.cs__verdict b { font-weight: 700; padding: 0 .15em; background: var(--accent); }
.cs__verdict[data-v="no"] b { background: var(--bad); color: var(--cv-paper); }
.cs__bar { display: flex; flex-direction: column; gap: .4rem; }
.cs__bar p { font-size: max(.9rem, 13.5px); line-height: 1.45; color: var(--cv-ink-70); }
.cs__track { position: relative; height: 1.4rem; border: 1.5px solid var(--cv-ink); border-radius: .4rem; overflow: hidden; background: rgba(38,38,38,.04); }
.cs__track i { position: absolute; inset: 0; background: var(--accent); transform-origin: left; transform: scaleX(0); transition: transform .6s var(--ease-out), background-color .3s; }
.cs__track i[data-v="no"] { background: var(--bad); }
.cs__track b { position: absolute; top: -2px; bottom: -2px; width: 2px; background: var(--cv-ink); }
.cs__calc { list-style: none; margin: 0; padding: .8rem 0 0; border-top: 1px dashed var(--cv-ink-25); display: flex; flex-direction: column; gap: .3rem; font-size: 12.5px; color: var(--cv-ink-70); font-variant-numeric: tabular-nums; }

/* la soglia e i due errori */
.sg { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 2rem; align-items: start; }
.sg__left { display: flex; flex-direction: column; gap: .8rem; }
.sg__left .cam__range { flex: none; }
.sg__hist { display: block; width: 100%; height: 180px; border: 1.5px solid var(--cv-ink); border-radius: .6rem; background: var(--cv-paper); }
.sg__legend { display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; font-size: 12px; font-weight: 700; color: var(--cv-ink-70); }
.sg__legend span { display: inline-flex; align-items: center; gap: .4em; }
.sg__legend i { width: .9em; height: .9em; border-radius: 2px; display: inline-block; }
.sg__legend i.is-sick { background: rgba(255,209,26,.9); }
.sg__legend i.is-ok { background: rgba(38,38,38,.28); }
.sg__legend i.is-line { width: .25em; background: var(--bad); }
.sg__right { display: flex; flex-direction: column; gap: 1rem; }
.sg__cm { border-collapse: separate; border-spacing: 4px; width: 100%; table-layout: fixed; }
.sg__cm th { font-size: 11.5px; font-weight: 700; color: var(--cv-ink-70); text-align: center; padding: .2rem; }
.sg__cm tbody th { text-align: right; }
.sg__cm td { height: 3.2rem; text-align: center; font-size: 1.5rem; font-weight: 600; letter-spacing: -.02em; border: 1.5px solid var(--cv-ink); border-radius: .5rem; font-variant-numeric: tabular-nums; }
.sg__cm td.is-good { background: var(--accent); }
.sg__cm td.is-bad { background: rgba(210,96,58,.12); color: var(--bad); border-color: var(--bad); }
.sg__m { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; }
.sg__m li { display: flex; flex-direction: column; gap: .2rem; }
.sg__m .meta { color: var(--cv-ink-50); }
.sg__m b { font-size: 1.35rem; font-weight: 600; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.sg__say { font-size: max(.95rem, 14px); line-height: 1.45; }

/* quanti bit servono */
.bq { display: flex; flex-direction: column; gap: 1.1rem; max-width: 56rem; }
.bq__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 1.2rem; align-items: start; }
.bq__fig { margin: 0; display: flex; flex-direction: column; gap: .45rem; }
.bq__fig canvas { display: block; width: 100%; border: 1.5px solid var(--cv-ink); border-radius: .6rem; background: var(--cv-paper); }
.bq__fig [data-w] { height: 200px; }
.bq__fig figcaption { color: var(--cv-ink-50); }
.bq__m { list-style: none; margin: 0; padding: .9rem 0 0; border-top: 1.5px solid var(--cv-ink); display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; }
.bq__m li { display: flex; flex-direction: column; justify-content: space-between; gap: .2rem; }
.bq__m .meta { color: var(--cv-ink-50); }
.bq__m b { font-size: 1.35rem; font-weight: 600; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
@media (max-width: 991px) {
  .mrow { grid-template-columns: 1fr; }
  .mrow__h { grid-column: 1; }
  .mbar { grid-template-columns: 3rem 1fr 5.5rem; gap: .6rem; }
  .nn { grid-template-columns: 1fr; }
  .nn__stats b { font-size: 1.1rem; }
  .cas { grid-template-columns: 1fr; }
  .cas__q { font-size: 1.3rem; }
  .cas__grid tbody th { width: 4.6rem; font-size: 10.5px; }
  .cas__grid thead th:first-child { width: 4.6rem; }
  .trc__feat { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cs { grid-template-columns: 1fr; }
  .sg { grid-template-columns: 1fr; }
  .bq__grid { grid-template-columns: 1fr; }
}

/* ============================================================================
   14. SCROLL & READ, LISTEN (assets/js/listen.js)
   ============================================================================ */

/* la scelta nell'apertura della lezione */
.modes { margin-top: 2.6rem; max-width: 54rem; }
.modes__opts { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; margin-top: .9rem; }
.mode { display: grid; grid-template-columns: 2.6rem 1fr; column-gap: 1rem; row-gap: .25rem; align-items: center; text-align: left; padding: 1rem 1.2rem 1.05rem; border: 1px solid var(--line-2); border-radius: .9rem; transition: border-color .3s, background-color .3s; }
.mode b { font-size: 1.35rem; font-weight: 500; letter-spacing: -.03em; line-height: 1.05; }
.mode span { grid-column: 2; font-size: var(--t-small); color: var(--ink-55); line-height: 1.35; }
.mode__ico { grid-row: span 2; align-self: start; width: 2.6rem; height: 2.6rem; border-radius: 50%; border: 1px solid var(--line-2); position: relative; transition: background-color .3s, border-color .3s; }
.mode__ico--read::before { content: ""; position: absolute; left: 50%; top: 32%; width: 1px; height: 36%; background: currentColor; transform: translateX(-50%); }
.mode__ico--read::after { content: ""; position: absolute; left: 50%; top: 52%; width: .45rem; height: .45rem; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: translateX(-50%) rotate(45deg); }
.mode__ico--listen::before { content: ""; position: absolute; left: 54%; top: 50%; transform: translate(-50%, -50%); border-left: .6rem solid currentColor; border-top: .38rem solid transparent; border-bottom: .38rem solid transparent; }
@media (hover: hover) { .mode:hover { border-color: var(--ink); } }
.mode.is-on { border-color: var(--accent); background: rgba(255,209,26,.07); }
.mode.is-on .mode__ico { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

/* il pulsante Listen nella barra del racconto */
.cvs__listen { margin-left: auto; flex: none; display: inline-flex; align-items: center; gap: .55em; padding: .6em 1em; border-radius: 999px; background: var(--cv-ink); color: var(--cv-paper); font-size: max(.7rem, 11px); font-weight: 700; letter-spacing: .05em; text-transform: uppercase; white-space: nowrap; transition: background-color .3s, color .3s; }
.cvs__listen i { width: 0; height: 0; border-left: .5em solid var(--accent); border-top: .32em solid transparent; border-bottom: .32em solid transparent; }
@media (hover: hover) { .cvs__listen:hover { background: var(--accent); color: var(--cv-ink); } .cvs__listen:hover i { border-left-color: var(--cv-ink); } }
.cvs__bar .cvs__line { min-width: 2rem; }

/* la modalità ascolto: il foglio a tutto schermo */
html.is-listening, html.is-listening body { overflow: hidden; }
html.is-listening .site-header, html.is-listening .rail, html.is-listening #cursor, html.is-listening .toast { display: none; }
html.is-listening .cvs__stage { position: fixed; inset: 0; z-index: 60; height: 100vh; height: 100svh; padding: 12px; background: var(--bg); }
[data-mode="listen"] .cvs__steps, [data-mode="listen"] .cvs__bar { display: none; }
/* .cvs__stage nel selettore: deve vincere sulle regole del racconto per i due lati */
[data-mode="listen"] .cvs__stage .cvs__window { top: 3.6rem; bottom: 5.4rem; }
.lsn[hidden] { display: none; }
.lsn { position: absolute; inset: 0; pointer-events: none; color: var(--cv-ink); }
.lsn > * { pointer-events: auto; }

.lsn__top { position: absolute; left: 1rem; right: 1rem; top: .8rem; height: 2.2rem; display: flex; align-items: center; gap: 1rem; }
.lsn__badge { display: inline-flex; align-items: center; gap: .5em; padding: .45em .85em; border-radius: 999px; background: var(--accent); font-size: max(.72rem, 11px); font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.lsn__badge i { width: .5em; height: .5em; border-radius: 50%; background: var(--cv-ink); }
.is-playing .lsn__badge i { animation: lsn-pulse 1.2s ease-in-out infinite; }
@keyframes lsn-pulse { 50% { transform: scale(.55); opacity: .5; } }
.lsn__meta { font-size: max(.72rem, 11px); color: var(--cv-ink-50); font-weight: 500; }
.lsn__exit { margin-left: auto; display: inline-flex; align-items: center; gap: .6em; padding: .45em .5em .45em .9em; border: 1.5px solid var(--cv-ink); border-radius: 999px; font-size: max(.72rem, 11px); font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.lsn__exit kbd { font: inherit; font-size: .85em; padding: .15em .45em; border-radius: .35em; background: var(--cv-ink-12); }
@media (hover: hover) { .lsn__exit:hover { background: var(--cv-ink); color: var(--cv-paper); } }

/* sottotitoli nel lato libero, come il testo dei capitoli */
.lsn__panel { position: absolute; top: calc(50% - .9rem); left: 2.2rem; width: calc(38% - 4rem); transform: translateY(-50%); }
.cvs__stage[data-side="left"] .lsn__panel, .cvs__stage[data-side="left"] .lsn__end { left: auto; right: 2.2rem; }
.lsn__panel.is-in { animation: lsn-in .7s var(--ease-out) both; }
@keyframes lsn-in { from { opacity: 0; transform: translateY(calc(-50% + 1rem)); } }
.is-reduced .lsn__panel.is-in { animation: none; }
.lsn__title { margin-bottom: 1.6rem; }
.lsn__mark { margin: 0 0 .6rem; font-size: max(.8rem, 12.5px); }
.lsn__mark mark { background: linear-gradient(transparent 52%, rgba(255,209,26,.75) 52%); color: var(--cv-ink); font-weight: 700; padding: 0 .1em; }
.lsn__sub { font-size: 1.55rem; line-height: 1.3; letter-spacing: -.02em; font-weight: 500; color: rgba(38,38,38,.3); min-height: 2.6em; transition: opacity .4s; text-wrap: pretty; }
.lsn__sub span { transition: color .12s linear, background-color .12s linear; border-radius: .15em; }
.lsn__sub span.is-said { color: var(--cv-ink); }
.lsn__sub span.is-now { color: var(--cv-ink); background: rgba(255,209,26,.8); box-shadow: 0 0 0 .08em rgba(255,209,26,.8); }
.lsn__sub.is-rest { opacity: .8; }
.lsn__sub.is-tip { border-left: 4px solid var(--accent); padding-left: .8rem; margin-left: -1.05rem; }
.lsn__it.is-tip { padding-left: 0; }
.lsn__it { margin-top: 1rem; padding-top: .9rem; border-top: 1px dashed var(--cv-ink-25); font-size: max(.92rem, 14px); line-height: 1.45; color: var(--cv-ink-70); }
[data-cc="en"] .lsn__it, [data-cc="off"] .lsn__it, [data-cc="off"] .lsn__sub, [data-cc="off"] .lsn__mark { display: none; }

/* fine dell'ascolto */
.lsn__end { position: absolute; top: 50%; left: 2.2rem; width: calc(38% - 4rem); transform: translateY(-50%); display: flex; flex-direction: column; gap: 1rem; }
.lsn__end[hidden] { display: none; }
.lsn__end .meta { color: var(--cv-ink-50); }
.lsn__end-t { font-size: 2.3rem; line-height: 1; letter-spacing: -.04em; font-weight: 500; }
.lsn__end-a { display: flex; flex-wrap: wrap; gap: .5rem; }
.is-ended .lsn__panel { display: none; }

/* comandi */
.lsn__bar { position: absolute; left: 1rem; right: 1rem; bottom: 1rem; height: 3.4rem; display: flex; align-items: center; gap: 1rem; }
.lsn__play { flex: none; width: 3.2rem; height: 3.2rem; border-radius: 50%; background: var(--cv-ink); position: relative; transition: background-color .3s; }
.lsn__play i { position: absolute; left: 54%; top: 50%; transform: translate(-50%, -50%); border-left: .8rem solid var(--accent); border-top: .5rem solid transparent; border-bottom: .5rem solid transparent; }
.is-playing .lsn__play i { left: 50%; width: .75rem; height: 1rem; border: 0; border-left: .26rem solid var(--accent); border-right: .26rem solid var(--accent); }
.is-loading .lsn__play::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 2px solid transparent; border-top-color: var(--accent); animation: lsn-spin .9s linear infinite; }
@keyframes lsn-spin { to { transform: rotate(360deg); } }
.lsn__seek { flex: 1; position: relative; height: 3.4rem; cursor: pointer; touch-action: none; outline: none; }
.lsn__seek:focus-visible .lsn__track { box-shadow: 0 0 0 3px var(--accent); }
.lsn__track { position: absolute; left: 0; right: 0; top: 50%; height: 4px; margin-top: -2px; background: rgba(38,38,38,.14); border-radius: 2px; overflow: hidden; }
.lsn__track i { position: absolute; inset: 0; background: var(--cv-ink); transform-origin: left; transform: scaleX(0); }
.lsn__marks { position: absolute; inset: 0; pointer-events: none; }
.lsn__mark-ch { pointer-events: auto; position: absolute; top: 50%; transform: translate(-50%, -50%); width: 1.75rem; height: 1.75rem; border-radius: 50%; border: 1.5px solid var(--cv-ink); background: var(--cv-paper); font-size: max(.58rem, 9.5px); font-weight: 700; display: grid; place-items: center; transition: background-color .3s, color .3s; }
.lsn__mark-ch.is-done { background: var(--cv-ink); color: var(--cv-paper); }
.lsn__mark-ch.is-now { background: var(--accent); color: var(--cv-ink); }
.lsn__time { flex: none; min-width: 6.4em; font-size: max(.78rem, 12px); font-variant-numeric: tabular-nums; color: var(--cv-ink-70); text-align: right; }
.lsn__btn { flex: none; min-width: 3.2rem; padding: .5em .8em; border: 1.5px solid var(--cv-ink); border-radius: 999px; font-size: max(.7rem, 11px); font-weight: 700; letter-spacing: .03em; }
@media (hover: hover) { .lsn__btn:hover { background: var(--accent); } }
[data-cc="off"] [data-lsn-cc] { opacity: .5; text-decoration: line-through; }

@media (max-width: 991px) {
  .modes__opts { grid-template-columns: 1fr; }
  .mode b { font-size: 1.2rem; }
  .cvs__listen { padding: .5em .8em; }
  html.is-listening .cvs__stage { padding: 6px; }
  [data-mode="listen"] .cvs__stage { --lw: 44%; }
  [data-mode="listen"] .cvs__stage .cvs__window, [data-mode="listen"] .cvs__stage[data-side="left"] .cvs__window { left: .6rem; right: .6rem; top: 3.3rem; bottom: auto; height: var(--lw); }
  .cvs__stage[data-side="left"] .lsn__panel, .cvs__stage[data-side="left"] .lsn__end { right: 1.1rem; }
  .lsn__top { left: .7rem; right: .7rem; top: .55rem; }
  .lsn__meta { display: none; }
  .lsn__exit kbd { display: none; }
  .lsn__panel, .lsn__end, .cvs__stage[data-side="left"] .lsn__panel, .cvs__stage[data-side="left"] .lsn__end { left: 1.1rem; right: 1.1rem; width: auto; top: calc(var(--lw) + 4.3rem); transform: none; }
  .lsn__panel.is-in { animation-name: lsn-in-m; }
  @keyframes lsn-in-m { from { opacity: 0; transform: translateY(.8rem); } }
  .lsn__title { font-size: 1.35rem; margin: .45rem 0 .9rem; }
  .lsn__sub { font-size: 1.22rem; }
  .lsn__it { font-size: 13.5px; margin-top: .7rem; padding-top: .6rem; }
  .lsn__end-t { font-size: 1.7rem; }
  .lsn__bar { left: .6rem; right: .6rem; bottom: .6rem; height: auto; flex-wrap: wrap; gap: .5rem .7rem; }
  .lsn__play { width: 2.9rem; height: 2.9rem; }
  .lsn__seek { order: -1; flex-basis: 100%; height: 2.4rem; }
  .lsn__mark-ch { width: 1.45rem; height: 1.45rem; }
  .lsn__time { margin-right: auto; text-align: left; }
}
/* telefoni bassi: la scena si stringe perché sottotitoli e comandi ci stiano */
@media (max-width: 991px) and (max-height: 740px) {
  [data-mode="listen"] .cvs__stage { --lw: 36%; }
  .lsn__title { font-size: 1.2rem; margin: .3rem 0 .6rem; }
  .lsn__sub { font-size: 1.1rem; }
  .lsn__it { font-size: 13px; }
}
html.lsn-probe .cvs__window, html.lsn-probe .lsn__panel { transition: none !important; animation: none !important; }

/* ============================================================================
   15. IL LABORATORIO (assets/js/lab/*)
   Schede di carta sul fondo scuro, come il foglio delle lezioni.
   ============================================================================ */
.page-hero__lez { margin-top: 1.2rem; color: var(--ink-55); max-width: 46em; }
.page-hero__lez .u-link { color: var(--ink-75); }
.lab-wrap { padding-bottom: var(--c5v); }
.lab { display: flex; flex-direction: column; gap: 1rem; color: var(--cv-ink); scroll-margin-top: 5.5rem; }
.lab__card .meta { color: var(--cv-ink-50); }
.lab > .meta { color: var(--ink-55); }
.lab__passi { position: relative; display: flex; gap: .35rem; overflow-x: auto; padding: .35rem; border-radius: 999px; background: var(--bg-3); scrollbar-width: none; }
.lab__passi::-webkit-scrollbar { display: none; }
.lab__passo { flex: 1 0 auto; display: inline-flex; align-items: center; justify-content: center; gap: .5em; padding: .65em 1em; border-radius: 999px; color: var(--ink-75); font-weight: 600; font-size: max(.82rem, 13px); white-space: nowrap; transition: background-color .25s, color .25s; }
.lab__passo .meta { color: var(--ink-35); }
.lab__passo:disabled { opacity: .35; cursor: default; }
.lab__passo.is-fatto { color: var(--ink); }
.lab__passo.is-fatto .meta { color: var(--accent); }
.lab__passo.is-on { background: var(--accent); color: var(--accent-ink); }
.lab__passo.is-on .meta { color: var(--accent-ink); opacity: .6; }
@media (hover: hover) { .lab__passo:not(:disabled):not(.is-on):hover { background: var(--bg-2); color: var(--ink); } }
.lab__stato { min-height: 1.4em; color: var(--accent); font-size: max(.88rem, 13.5px); font-weight: 600; }
.lab__corpo { display: flex; flex-direction: column; gap: 1rem; }
.lab__due { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1rem; align-items: start; }
.lab__due--raccogli { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); }
.lab__card {
  padding: 1.3rem 1.4rem 1.4rem; border-radius: var(--radius); display: flex; flex-direction: column; gap: 1rem;
  background-color: var(--cv-paper); color: var(--cv-ink);
  background-image: linear-gradient(var(--cv-grid) 1px, transparent 1px), linear-gradient(90deg, var(--cv-grid) 1px, transparent 1px);
  background-size: 22px 22px;
}
.lab__card .pill { align-self: flex-start; }
.lab__h { font-size: 1.35rem; line-height: 1.1; letter-spacing: -.03em; font-weight: 500; }
.lab__h3 { font-size: 1.05rem; font-weight: 600; letter-spacing: -.02em; margin-top: .4rem; }
.lab__campo { display: flex; flex-direction: column; gap: .45rem; }
.lab__campo .label, .lab .label { color: var(--cv-ink-70); }
.lab__campo input, .lab__campo textarea, .lab__molte textarea {
  width: 100%; padding: .75em .9em; border: 1.5px solid var(--cv-ink); border-radius: .6rem; background: rgba(255,255,255,.55);
  color: var(--cv-ink); font: inherit; font-size: max(.95rem, 16px); line-height: 1.4; resize: vertical;
}
.lab__campo input:focus, .lab__campo textarea:focus, .lab__molte textarea:focus { outline: none; box-shadow: 0 0 0 3px var(--accent); }
.lab__campo--grande input { font-size: 1.2rem; }
.lab__campo .meta { color: var(--cv-ink-50); }
.lab__nota { font-size: max(.9rem, 14px); line-height: 1.5; color: var(--cv-ink-70); max-width: 40em; }
.lab__vuoto { color: var(--cv-ink-50); font-size: max(.9rem, 14px); }
.lab__avviso { padding: .7rem .9rem; border-left: 4px solid var(--bad); background: rgba(210,96,58,.08); font-size: max(.9rem, 14px); line-height: 1.45; border-radius: 0 .4rem .4rem 0; }
.lab__avvisi { display: flex; flex-direction: column; gap: .4rem; }
.lab__avvisi p { padding: .55rem .8rem; border-left: 4px solid var(--accent); background: rgba(255,209,26,.14); font-size: max(.86rem, 13.5px); line-height: 1.4; border-radius: 0 .4rem .4rem 0; }
.lab__lista { list-style: none; margin: 0; padding: 0; border-top: 1.5px solid var(--cv-ink); }
.lab__lista li { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .75rem 0; border-bottom: 1px solid var(--cv-ink-25); }
.lab__lista li > div { display: flex; flex-direction: column; gap: .2rem; min-width: 0; }
.lab__lista b { font-weight: 600; }
.lab__lista .meta { color: var(--cv-ink-50); }
.lab__lista-a { display: flex; gap: .35rem; flex: none; }
.lab__avanti { display: flex; justify-content: flex-end; }

/* il sensore */
.lab__card--stage { gap: .7rem; }
.lab__stage { position: relative; min-height: 14rem; border: 1.5px solid var(--cv-ink); border-radius: .7rem; overflow: hidden; background: var(--cv-ink); display: flex; align-items: center; justify-content: center; }
.lab__stage .pill { align-self: center; }
.lab__stage:has(.lab__campo) { background: transparent; border: 0; flex-direction: column; align-items: stretch; gap: .8rem; min-height: 0; }
.lab__view { display: block; width: 100%; height: auto; max-height: 62vh; object-fit: contain; }
.lab__view--suono, .lab__view--tracce { image-rendering: pixelated; background: var(--cv-paper); }
.lab__testo-ok { padding: 1.4rem; color: var(--cv-paper); font-size: max(.95rem, 14px); line-height: 1.5; }
.lab__stage-a { display: flex; flex-wrap: wrap; gap: .4rem; }
.lab__stage-a:empty { display: none; }
.lab__file { cursor: pointer; }
.lab__classi .seg b { font-variant-numeric: tabular-nums; opacity: .65; margin-left: .15em; }

/* registrare */
.lab__rec { display: flex; flex-direction: column; gap: .6rem; align-items: flex-start; }
.lab__rec-btn { display: inline-flex; align-items: center; gap: .9rem; padding: .9rem 1.4rem .9rem 1rem; border-radius: 999px; background: var(--cv-ink); color: var(--cv-paper); font-weight: 700; font-size: 1rem; touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; transition: background-color .2s, transform .15s; }
.lab__rec-btn i { width: 2.4rem; height: 2.4rem; border-radius: 50%; background: var(--accent); flex: none; position: relative; }
.lab__rec-btn.is-rec { background: var(--bad); transform: scale(.98); }
.lab__rec-btn.is-rec i { animation: lab-rec 1s ease-in-out infinite; }
@keyframes lab-rec { 50% { transform: scale(.72); } }
.lab__rec-btn.is-disabled { opacity: .4; pointer-events: none; }
.lab__rec-a { display: flex; gap: .4rem; }
.lab__rec-n { color: var(--cv-ink-50); min-height: 1.3em; }
.lab__molte summary { cursor: pointer; font-weight: 600; font-size: max(.86rem, 13.5px); }
.lab__molte { display: flex; flex-direction: column; gap: .5rem; }
.lab__molte[open] { gap: .6rem; }

/* gli esempi */
.lab__galleria { display: flex; flex-direction: column; gap: 1rem; }
.lab__gruppo { display: flex; flex-direction: column; gap: .5rem; }
.lab__gruppo-h { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; border-bottom: 1px solid var(--cv-ink-25); padding-bottom: .35rem; }
.lab__gruppo-h .meta { color: var(--cv-ink-50); }
.lab__thumbs { display: flex; flex-wrap: wrap; gap: .35rem; align-items: center; }
.lab__thumb { width: 3.6rem; height: 3.6rem; border-radius: .4rem; overflow: hidden; border: 1.5px solid var(--cv-ink); padding: 0; background: var(--cv-paper); }
.lab__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lab__frase { padding: .4em .7em; border: 1.5px solid var(--cv-ink); border-radius: .5rem; background: rgba(255,255,255,.5); font-size: max(.82rem, 13px); text-align: left; max-width: 22rem; overflow-wrap: anywhere; }
@media (hover: hover) { .lab__thumb:hover, button.lab__frase:hover { border-color: var(--bad); box-shadow: 0 0 0 2px var(--bad); } }

/* misure e grafici */
.lab__fatti { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); gap: .8rem 1.2rem; }
.lab__fatti li { display: flex; flex-direction: column; gap: .25rem; padding-top: .7rem; border-top: 1.5px solid var(--cv-ink); }
.lab__fatti b { font-size: 1.5rem; font-weight: 600; letter-spacing: -.03em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.lab__fatti span { font-size: max(.84rem, 13px); line-height: 1.4; color: var(--cv-ink-70); }
.lab__grafico { display: block; width: 100%; height: 180px; border: 1.5px solid var(--cv-ink); border-radius: .6rem; background: var(--cv-paper); }
.lab__leg { color: var(--cv-ink-70); display: flex; flex-wrap: wrap; gap: .3rem 1rem; align-items: center; }
.lab__k { display: inline-block; width: 1.2em; height: .3em; border-radius: 2px; margin-right: .35em; vertical-align: middle; }
.lab__k--ink { background: var(--cv-ink); } .lab__k--yel { background: #b58f0a; }
.lab__k--dot { width: .75em; height: .75em; border-radius: 50%; background: var(--accent); border: 1.5px solid var(--cv-ink); }
.lab-cm { border-collapse: separate; border-spacing: 3px; font-variant-numeric: tabular-nums; }
.lab-cm th { font-size: 12px; font-weight: 700; color: var(--cv-ink-70); padding: .2rem .4rem; text-align: right; max-width: 8rem; overflow-wrap: anywhere; }
.lab-cm thead th { text-align: center; vertical-align: bottom; }
.lab-cm thead th span { display: inline-block; max-width: 6rem; overflow-wrap: anywhere; }
.lab-cm td { min-width: 2.8rem; height: 2.4rem; text-align: center; font-weight: 700; border: 1.5px solid var(--cv-ink-25); border-radius: .35rem; }
.lab-cm td.is-ok { background: rgba(255,209,26, var(--a)); border-color: var(--cv-ink); }
.lab-cm td.is-bad { background: rgba(210,96,58, calc(var(--a) * .6)); border-color: var(--bad); color: var(--cv-ink); }
.lab-cm__leg { color: var(--cv-ink-50); margin-top: .4rem; }
.lab__err { margin: 0; width: 7.5rem; display: flex; flex-direction: column; gap: .3rem; }
.lab__err img { width: 7.5rem; height: 7.5rem; object-fit: cover; border: 1.5px solid var(--bad); border-radius: .4rem; }
.lab__err figcaption { font-size: 11.5px; line-height: 1.3; color: var(--cv-ink-70); }
.lab__tab { border-collapse: collapse; width: 100%; max-width: 34rem; font-variant-numeric: tabular-nums; }
.lab__tab th, .lab__tab td { text-align: left; padding: .6rem .5rem; border-bottom: 1px solid var(--cv-ink-25); }
.lab__tab thead th { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--cv-ink-70); border-bottom: 1.5px solid var(--cv-ink); }
.lab__tab td { font-weight: 600; }
.lab__check { display: flex; gap: .6rem; align-items: center; font-weight: 600; }
.lab__check input { width: 1.2rem; height: 1.2rem; accent-color: var(--cv-ink); }

/* l'uso dal vivo */
.lab__uscita { display: flex; flex-direction: column; gap: .45rem; min-height: 6rem; }
.lab-bar { display: grid; grid-template-columns: minmax(5rem, 9rem) 1fr minmax(3.6rem, auto); gap: .6rem; align-items: center; font-weight: 600; }
.lab-bar span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lab-bar i { position: relative; height: 1.4rem; border: 1.5px solid var(--cv-ink); border-radius: .35rem; overflow: hidden; background: rgba(38,38,38,.04); }
.lab-bar i b { position: absolute; inset: 0; background: var(--cv-ink-25); transform-origin: left; transition: transform .12s linear; }
.lab-bar i u { position: absolute; top: -2px; bottom: -2px; width: 2px; background: var(--cv-ink); }
.lab-bar.is-on i b { background: var(--accent); }
.lab-bar.is-bad i b { background: var(--bad); }
.lab-bar em { font-style: normal; text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.lab__num { font-size: 2.6rem; font-weight: 500; letter-spacing: -.04em; line-height: 1; }
.lab__num span { font-size: 1.1rem; letter-spacing: -.01em; color: var(--cv-ink-70); }
.lab__num--piccolo { font-size: 1.3rem; }
.lab__num .is-bad { color: var(--bad); }
.lab__vicina { margin-top: .6rem; padding: .7rem .9rem; border-radius: .5rem; background: rgba(38,38,38,.06); font-size: max(.86rem, 13.5px); line-height: 1.45; }
.lab__cnt { list-style: none; margin: .4rem 0 .6rem; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr)); gap: .4rem; }
.lab__cnt li { display: flex; justify-content: space-between; gap: .5rem; padding: .45rem .7rem; border: 1.5px solid var(--cv-ink); border-radius: .5rem; font-weight: 600; }
.lab__cnt b { font-variant-numeric: tabular-nums; }
.lab__cnt li span { min-width: 0; overflow-wrap: anywhere; }

/* i progetti nella pagina del laboratorio */
.lab-miei { margin-bottom: var(--c3v); }
.lab-miei:empty { display: none; }
.lab-miei__h { margin-bottom: .8rem; }
.lab-miei__lista { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line-2); }
.lab-miei__lista li { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .3rem 1rem; padding: .8rem 0; border-bottom: 1px solid var(--line); }
.lab-miei__lista a { color: var(--ink); text-decoration: underline; text-underline-offset: .2em; }
.lab-miei__lista .meta { color: var(--ink-55); }

@media (max-width: 991px) {
  .lab__due, .lab__due--raccogli { grid-template-columns: 1fr; }
  .lab__card { padding: 1.1rem 1rem 1.2rem; }
  .lab__passi { border-radius: 1rem; }
  .lab__passo { padding: .6em .8em; }
  .lab__view { max-height: 52vh; }
  .lab-bar { grid-template-columns: minmax(4rem, 7rem) 1fr minmax(3.2rem, auto); }
  .lab__num { font-size: 2.1rem; }
}

/* telefono in orizzontale o finestra bassa. Il foglio di impara e la foto di bit non superano l'altezza dello schermo */
@media (orientation: landscape) and (max-height: 600px) {
  .nn__canvas { width: min(100%, 72vh); margin-inline: auto; }
  .bq__fig canvas:not([data-w]) { width: min(100%, 64vh); margin-inline: auto; }
  /* foglio e comandi, foto e grafico affiancati, così si vedono insieme */
  .nn { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .bq__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); }
  /* la scheda della lezione chiusa può essere più alta dello schermo, allora si scorre */
  .lockscreen { align-items: start; overflow-y: auto; padding-top: 4rem; }
  .lockscreen__card { gap: .7rem; padding: 1.2rem 1.3rem; }
  .lockscreen__card .h2 { font-size: 1.6rem; }
}