/* formazione-lavagna · Doposcuola e ripetizioni
   Archetipo H11 (griglia svizzera minimale con numeri) su una lavagna d'ardesia · Host Grotesk + Caveat (il gesso) ·
   scuro ardesia, gesso bianco, gesso giallo, gesso azzurro.
   Forme: spigoli quasi vivi (6 px), righe di gesso sottili tra le celle. */

@font-face { font-family: 'Host Grotesk'; src: url('../_font/host-grotesk/host-grotesk-normal.woff2') format('woff2'); font-weight: 300 800; font-display: swap; }
@font-face { font-family: 'Caveat'; src: url('../_font/caveat/caveat-var.woff2') format('woff2'); font-weight: 400 700; font-display: swap; }

:root {
  --p: #f3d35b;
  --s: #1b2129;
  --t: #eeede4;
  --a: #86c5ec;
  --f-titoli: 'Host Grotesk', 'Helvetica Neue', system-ui, sans-serif;
  --f-testo: 'Host Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --f-gesso: 'Caveat', 'Segoe Print', 'Bradley Hand', cursive;

  --su-p: var(--s);
  --linea: color-mix(in oklab, var(--t) 16%, var(--s));
  --tenue: color-mix(in oklab, var(--t) 72%, var(--s));
  --scheda: color-mix(in oklab, var(--s) 90%, var(--t));
  --r: 6px;
  --molla: cubic-bezier(.22, 1, .36, 1);
  --pad: clamp(16px, 4vw, 48px);
  --testata-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--testata-h) + 12px); }
body { margin: 0; background: var(--s); color: var(--t); font-family: var(--f-testo); font-size: 17px; line-height: 1.55; overflow-x: clip; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--f-titoli); margin: 0; font-weight: 700; letter-spacing: -.035em; line-height: 1; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
figure { margin: 0; }
svg { width: 1em; height: 1em; }
.contenitore { width: 100%; max-width: 1360px; margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }
.salta { position: absolute; left: -9999px; top: 8px; background: var(--p); color: var(--su-p); padding: 10px 14px; z-index: 100; }
.salta:focus { left: 8px; }
:focus-visible { outline: 2px dashed var(--p); outline-offset: 4px; }

.titolo-sezione { font-size: clamp(2.2rem, 1.1rem + 3.4vw, 4.6rem); line-height: .98; letter-spacing: -.045em; max-width: 17ch; text-wrap: balance; }
html.js .riempi { background-image: linear-gradient(90deg, var(--t) 0 44%, var(--p) 48% 52%, color-mix(in oklab, var(--t) 34%, var(--s)) 56% 100%); background-size: 260% 100%; background-position: 100% 0; -webkit-background-clip: text; background-clip: text; color: transparent; }
.scritta { font-family: var(--f-gesso); font-weight: 600; font-size: 26px; line-height: 1.05; color: var(--p); letter-spacing: 0; }

/* ---------- bottoni ---------- */
.tasto { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 0 22px; border-radius: var(--r); border: 1.5px solid transparent; font: 650 17px/1 var(--f-titoli); letter-spacing: -.01em; text-decoration: none; white-space: nowrap; cursor: pointer; transition: transform .4s var(--molla), background-color .25s, color .25s; }
.tasto svg { width: 20px; height: 20px; transition: transform .4s var(--molla); }
.tasto:hover svg { transform: translateX(4px); }
.tasto:active { transform: scale(.98); }
.tasto--p { background: var(--p); color: var(--su-p); }
.tasto--p:hover { background: color-mix(in oklab, var(--p) 85%, var(--t)); }
.tasto--vuoto { border-color: color-mix(in oklab, var(--t) 45%, var(--s)); color: var(--t); }
.tasto--vuoto:hover { border-color: var(--t); background: color-mix(in oklab, var(--t) 8%, transparent); }
.tasto--piccolo { min-height: 44px; padding: 0 16px; font-size: 16px; }

/* ---------- testata ---------- */
.testata { position: sticky; top: 0; z-index: 50; background: color-mix(in oklab, var(--s) 92%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--linea); }
.gessetto { height: 3px; }
.gessetto span { display: block; height: 100%; background: var(--p); transform: scaleX(0); transform-origin: 0 50%;
  -webkit-mask-image: repeating-linear-gradient(90deg, #000 0 7px, rgba(0,0,0,.55) 7px 9px, #000 9px 15px, rgba(0,0,0,.75) 15px 16px); mask-image: repeating-linear-gradient(90deg, #000 0 7px, rgba(0,0,0,.55) 7px 9px, #000 9px 15px, rgba(0,0,0,.75) 15px 16px); }
.testata__riga { display: flex; align-items: center; gap: 22px; height: calc(var(--testata-h) - 3px); }
.marchio { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; margin-right: auto; min-width: 0; }
.marchio__segno { display: grid; place-items: center; width: 40px; height: 40px; flex: none; border: 1.5px solid var(--t); border-radius: var(--r); font: 600 30px/1 var(--f-gesso); color: var(--p); padding-top: 3px; }
.marchio__nome { font: 700 19px/1.1 var(--f-titoli); letter-spacing: -.02em; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; max-width: 22ch; }
.nav ul { display: flex; }
.nav a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 13px; text-decoration: none; font-weight: 550; font-size: 16px; color: var(--tenue); transition: color .2s; position: relative; }
.nav a:hover { color: var(--t); }
.nav a::after { content: ''; position: absolute; left: 13px; right: 13px; bottom: 9px; height: 2px; background: var(--p); transform: scaleX(0); transform-origin: 0 50%; transition: transform .35s var(--molla); }
.nav a:hover::after { transform: scaleX(1); }
.testata__azioni { display: flex; align-items: center; gap: 6px; }
.icona-tasto { position: relative; display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: var(--r); color: var(--t); }
.icona-tasto:hover { background: color-mix(in oklab, var(--t) 8%, transparent); }
.icona-tasto svg { width: 22px; height: 22px; }
.carrello__conta { position: absolute; top: 3px; right: 1px; min-width: 20px; height: 20px; padding: 0 5px; border-radius: 10px; background: var(--p); color: var(--su-p); font: 700 12px/20px var(--f-testo); text-align: center; }
.menu-tasto { display: none; min-height: 44px; padding: 0 16px; border-radius: var(--r); border: 1.5px solid var(--t); background: transparent; color: var(--t); font: 650 16px var(--f-titoli); cursor: pointer; }
.menu-tasto__testo { display: grid; height: 20px; overflow: hidden; line-height: 20px; }
.menu-tasto__testo span { grid-area: 1 / 1; transition: transform .45s var(--molla); }
.menu-tasto__testo span + span { transform: translateY(110%); }
.menu-tasto[aria-expanded="true"] .menu-tasto__testo span:first-child { transform: translateY(-110%); }
.menu-tasto[aria-expanded="true"] .menu-tasto__testo span + span { transform: none; }

.menu { position: fixed; inset: 0; z-index: 45; visibility: hidden; pointer-events: none; }
.menu.aperto { visibility: visible; pointer-events: auto; }
.menu__strato, .menu__pannello { position: absolute; top: 0; bottom: 0; left: 0; width: min(100%, 480px); transform: translateX(-102%); }
.menu.aperto .menu__strato, .menu.aperto .menu__pannello { transform: none; }
.menu__strato--1 { background: var(--p); }
.menu__strato--2 { background: var(--a); }
.menu__pannello { background: var(--scheda); padding: calc(var(--testata-h) + 24px) var(--pad) 32px; display: flex; flex-direction: column; justify-content: space-between; border-right: 1px solid var(--linea); overflow-y: auto; }
.menu__voci li { overflow: hidden; border-bottom: 1px solid var(--linea); }
.menu__voci a { display: flex; align-items: baseline; gap: 16px; padding: 12px 0; text-decoration: none; font: 700 clamp(2rem, 8vw, 2.7rem)/1.05 var(--f-titoli); letter-spacing: -.04em; }
.menu__voci a span { font: 600 22px var(--f-gesso); color: var(--p); }
.menu__nota { font: 600 26px/1.15 var(--f-gesso); color: var(--tenue); padding-top: 24px; }
.menu__nota a { color: var(--p); }

/* ---------- hero H11 ---------- */
.eroe { padding: clamp(14px, 2vw, 28px) 0 clamp(14px, 2vw, 36px); background-image: linear-gradient(color-mix(in oklab, var(--t) 5%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in oklab, var(--t) 5%, transparent) 1px, transparent 1px); background-size: 36px 36px; background-position: -1px -1px; }
.eroe__griglia { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); grid-template-rows: minmax(0, 1fr) auto; height: min(calc(100svh - var(--testata-h) - clamp(28px, 4vw, 64px)), 880px); min-height: 520px; gap: 1px; background: var(--linea); border: 1px solid var(--linea); padding: 0; max-width: calc(1360px - 2 * var(--pad)); width: calc(100% - 2 * var(--pad)); }
.cella { background: var(--s); padding: clamp(18px, 2.2vw, 32px); position: relative; }
.cella--titolo { grid-column: 1 / span 8; grid-row: 1; display: flex; flex-direction: column; justify-content: space-between; gap: 28px; }
.indice { font: 600 15px var(--f-testo); letter-spacing: .02em; color: var(--tenue); display: flex; gap: 12px; align-items: center; }
.indice::before { content: ''; width: 34px; height: 2px; background: var(--p); }
.eroe__titolo { padding-right: .3em; font-size: clamp(2.8rem, .8rem + 5.9vw, 7.2rem); line-height: .92; letter-spacing: -.042em; font-weight: 750; text-wrap: balance; }
.segnato { position: relative; white-space: nowrap; color: var(--p); }
.segnato__gesso { position: absolute; left: -8%; top: -16%; width: 116%; height: 138%; overflow: visible; pointer-events: none; }
.traccia { fill: none; stroke: var(--p); stroke-width: 3.2; stroke-linecap: round; stroke-linejoin: round; vector-effect: non-scaling-stroke; opacity: .9; }
.traccia--giallo { stroke: var(--p); }
.traccia--azzurro { stroke: var(--a); }
.cella--testo { grid-column: 1 / span 4; grid-row: 2; display: flex; flex-direction: column; gap: 22px; justify-content: space-between; }
.eroe__sotto { font-size: clamp(1.05rem, 1rem + .3vw, 1.22rem); color: var(--tenue); max-width: 36ch; }
.eroe__tasti { display: flex; flex-wrap: wrap; gap: 10px; }
.cella--num { grid-row: 2; display: flex; flex-direction: column; justify-content: flex-end; gap: 8px; }
.cella--num:nth-of-type(3) { grid-column: 5 / span 2; }
.cella--num:nth-of-type(4) { grid-column: 7 / span 2; }
.cella--num b { font: 700 clamp(3.4rem, 2rem + 3.6vw, 6.2rem)/.85 var(--f-titoli); letter-spacing: -.05em; font-variant-numeric: tabular-nums; }
.cella__cosa { color: var(--tenue); font-size: 15.5px; line-height: 1.35; max-width: 20ch; }
.cella--foto { grid-column: 9 / span 4; grid-row: 1 / span 2; padding: 0; overflow: hidden; min-height: 360px; }
.cella--foto img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 45%; filter: saturate(.9); }
.cella--foto .scritta { position: absolute; left: 20px; bottom: 18px; font-size: 28px; color: var(--t); text-shadow: 0 2px 12px color-mix(in oklab, var(--s) 70%, transparent); }

/* ---------- materie ---------- */
.materie { padding: clamp(80px, 11vw, 160px) 0 clamp(64px, 8vw, 120px); }
.materie__griglia { margin-top: clamp(36px, 5vw, 64px); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--linea); border: 1px solid var(--linea); }
.materia { background: var(--s); padding: clamp(20px, 2.4vw, 34px); min-height: clamp(170px, 16vw, 230px); display: flex; flex-direction: column; gap: 8px; transition: background-color .35s; }
.materia:hover { background: color-mix(in oklab, var(--p) 9%, var(--s)); }
.materia__n { font: 600 28px/1 var(--f-gesso); color: var(--p); margin-bottom: auto; }
.materia h3 { font-size: clamp(1.5rem, 1.1rem + 1vw, 2.2rem); letter-spacing: -.035em; margin-top: 18px; }
.materia p { color: var(--tenue); font-size: 15.5px; }

/* ---------- metodo: la lavagna che si scrive ---------- */
.metodo { padding: clamp(64px, 9vw, 128px) 0; border-top: 1px solid var(--linea); }
.metodo__corpo { margin-top: clamp(36px, 5vw, 64px); display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(28px, 5vw, 80px); align-items: start; }
.lavagna { position: sticky; top: calc(var(--testata-h) + 28px); background: color-mix(in oklab, var(--s) 82%, #2c3e36); border: 10px solid color-mix(in oklab, var(--s) 55%, #8a6a45); border-radius: 10px; box-shadow: inset 0 0 60px color-mix(in oklab, #000 40%, transparent), 0 30px 60px -30px #000; aspect-ratio: 560 / 420; }
.lavagna__svg { width: 100%; height: 100%; display: block; }
.gesso-testo { font-family: var(--f-gesso); font-weight: 600; font-size: 44px; fill: var(--t); opacity: .92; }
.gesso-testo--piccolo { font-size: 34px; }
.gesso-testo--giallo { fill: var(--p); }
.gesso-testo--azzurro { fill: var(--a); font-size: 38px; }
.lavagna .traccia { stroke: var(--t); stroke-width: 3; }
.lavagna .traccia--giallo { stroke: var(--p); }
.lavagna .traccia--azzurro { stroke: var(--a); stroke-width: 4; }
.passi { display: grid; gap: clamp(60px, 14vh, 160px); padding: 4vh 0 22vh; }
.passo { border-top: 1px solid var(--linea); padding-top: 22px; transition: opacity .4s; }
html.js .passo { opacity: .38; }
html.js .passo.attivo { opacity: 1; }
.passo__n { font: 600 34px/1 var(--f-gesso); color: var(--p); }
.passo h3 { font-size: clamp(1.6rem, 1.2rem + 1.2vw, 2.5rem); letter-spacing: -.035em; margin: 10px 0 12px; }
.passo p { color: var(--tenue); max-width: 42ch; }
.passo__gesso { display: none; }

/* ---------- risultati ---------- */
.risultati { border-top: 1px solid var(--linea); border-bottom: 1px solid var(--linea); }
.risultati__griglia { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--linea); padding: 0; max-width: none; }
.risultato { background: var(--s); padding: clamp(28px, 3.4vw, 52px) clamp(18px, 2.4vw, 40px); display: flex; flex-direction: column; justify-content: space-between; gap: 18px; min-height: clamp(220px, 20vw, 300px); }
.risultato b { font: 700 clamp(3.4rem, 1.8rem + 4vw, 7rem)/.85 var(--f-titoli); letter-spacing: -.055em; color: var(--p); font-variant-numeric: tabular-nums; }
.risultato__cosa { color: var(--tenue); max-width: 22ch; }
.risultato--foto { padding: 0; overflow: hidden; position: relative; }
.risultato--foto img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

/* ---------- piani: schede che si impilano ---------- */
.piani { padding: clamp(80px, 11vw, 160px) 0 clamp(40px, 5vw, 80px); }
.pila { margin-top: clamp(36px, 5vw, 64px); display: grid; gap: clamp(20px, 3vh, 36px); }
.scheda { position: sticky; top: calc(var(--testata-h) + 20px); display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); min-height: clamp(360px, 52vh, 480px); background: var(--scheda); border: 1px solid var(--linea); border-radius: 10px; overflow: hidden; transform-origin: 50% 0; box-shadow: 0 -20px 50px -30px #000; }
.scheda:nth-child(2) { top: calc(var(--testata-h) + 36px); }
.scheda:nth-child(3) { top: calc(var(--testata-h) + 52px); }
.scheda:nth-child(4) { top: calc(var(--testata-h) + 68px); }
.scheda__testo { padding: clamp(24px, 3.4vw, 52px); display: flex; flex-direction: column; gap: 14px; }
.scheda__n { font: 600 34px/1 var(--f-gesso); color: var(--p); }
.scheda h3 { font-size: clamp(2rem, 1.3rem + 2.2vw, 3.6rem); letter-spacing: -.045em; }
.scheda p { color: var(--tenue); max-width: 44ch; }
.scheda__prezzo { margin-top: auto; padding-top: 20px; border-top: 1px dashed var(--linea); color: var(--t) !important; }
.scheda__prezzo b { font: 700 clamp(2rem, 1.5rem + 1.4vw, 3rem)/1 var(--f-titoli); color: var(--p); letter-spacing: -.04em; margin-right: 6px; }
.scheda__prezzo small { color: var(--tenue); font-size: 15px; }
.scheda img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- negozio ---------- */
.negozio { padding: clamp(56px, 8vw, 112px) 0; border-top: 1px solid var(--linea); }
.negozio__griglia { margin-top: clamp(32px, 4vw, 56px); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--linea); border: 1px solid var(--linea); }
.prodotto { background: var(--s); display: flex; flex-direction: column; }
.prodotto img { aspect-ratio: 16 / 10; object-fit: cover; width: 100%; }
.prodotto__corpo { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.prodotto h3 { font-size: 22px; letter-spacing: -.03em; }
.prodotto p { color: var(--tenue); font-size: 15.5px; }
.prodotto__riga { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-top: 16px; margin-top: auto; }
.prodotto__riga b { font: 700 26px var(--f-titoli); color: var(--p); letter-spacing: -.03em; }
.aggiungi { min-height: 44px; padding: 0 18px; border-radius: var(--r); border: 1.5px solid var(--p); background: transparent; color: var(--p); font: 650 16px var(--f-titoli); cursor: pointer; transition: background-color .2s, color .2s; }
.aggiungi:hover, .aggiungi.fatto { background: var(--p); color: var(--su-p); }

/* ---------- tutor ---------- */
.tutor { padding: clamp(80px, 11vw, 160px) 0; }
.tutor__griglia { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(28px, 5vw, 80px); align-items: start; }
.tutor__intro { margin-top: 20px; color: var(--tenue); max-width: 42ch; }
.tutor__foto { margin-top: 32px; border-radius: 8px; aspect-ratio: 3 / 2; object-fit: cover; width: 100%; filter: saturate(.85); }
.tutor__lista li { display: grid; grid-template-columns: 52px minmax(0, 1.2fr) minmax(0, 1fr); gap: 4px 16px; align-items: baseline; padding: 22px 0; border-top: 1px solid var(--linea); }
.tutor__lista li:last-child { border-bottom: 1px solid var(--linea); }
.tutor__n { font: 600 26px/1 var(--f-gesso); color: var(--p); grid-row: span 2; }
.tutor__lista b { font: 700 clamp(1.3rem, 1rem + .9vw, 1.9rem)/1.1 var(--f-titoli); letter-spacing: -.03em; }
.tutor__lista span:not(.tutor__n) { color: var(--t); text-align: right; }
.tutor__lista em { grid-column: 2 / -1; font-style: normal; color: var(--tenue); font-size: 15.5px; }

/* ---------- pareri ---------- */
.pareri { padding: clamp(64px, 9vw, 128px) 0; border-top: 1px solid var(--linea); }
.pareri__testa { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 16px 32px; }
.pareri__voto { color: var(--tenue); }
.pareri__voto b { font: 700 44px/1 var(--f-titoli); color: var(--t); margin-right: 6px; letter-spacing: -.04em; }
.pareri__griglia { margin-top: clamp(32px, 4vw, 56px); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--linea); border: 1px solid var(--linea); }
.parere { margin: 0; background: var(--s); padding: clamp(24px, 3vw, 40px); display: flex; flex-direction: column; gap: 16px; }
.parere p:not(.scritta) { font-size: clamp(1.15rem, 1rem + .4vw, 1.35rem); line-height: 1.4; letter-spacing: -.01em; }
.scritta--voto { font-size: 30px; transform: rotate(-3deg); transform-origin: 0 50%; }
.parere footer { margin-top: auto; color: var(--tenue); font-size: 15px; }

/* ---------- contatti ---------- */
.contatti { padding: clamp(64px, 9vw, 128px) 0; border-top: 1px solid var(--linea); }
.contatti__griglia { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(28px, 5vw, 80px); align-items: start; }
.contatti__intro { margin-top: 18px; color: var(--tenue); font-size: 18px; }
.contatti__dati { margin-top: 32px; display: grid; gap: 16px; }
.contatti__dati li { display: flex; gap: 14px; align-items: flex-start; font-size: 18px; }
.contatti__dati svg { width: 24px; height: 24px; color: var(--p); flex: none; margin-top: 2px; }
.contatti__dati a { font-weight: 700; text-decoration: none; }
.contatti__dati small { color: var(--tenue); font-size: 15px; }
.modulo { border: 1px solid var(--linea); background: var(--scheda); border-radius: 10px; padding: clamp(22px, 3vw, 40px); display: grid; gap: 18px; }
.modulo__riga { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.modulo label { display: grid; gap: 6px; font-size: 15px; font-weight: 600; color: var(--tenue); }
.modulo input, .modulo select { font: 400 17px var(--f-testo); color: var(--t); background: var(--s); border: 1px solid color-mix(in oklab, var(--t) 30%, var(--s)); border-radius: var(--r); padding: 12px 14px; min-height: 50px; width: 100%; }
.modulo input:focus, .modulo select:focus { outline: none; border-color: var(--p); box-shadow: 0 0 0 3px color-mix(in oklab, var(--p) 25%, transparent); }
.modulo .tasto { justify-self: start; }
.modulo__nota { font-size: 15px; color: var(--tenue); }

/* ---------- piede ---------- */
.piede { border-top: 1px solid var(--linea); padding: clamp(56px, 8vw, 104px) 0 calc(clamp(28px, 4vw, 44px) + 60px); }
.piede__nome { font: 750 clamp(2.6rem, 1rem + 6vw, 8rem)/.88 var(--f-titoli); letter-spacing: -.06em; overflow-wrap: anywhere; margin-bottom: clamp(28px, 4vw, 56px); }
.piede__righe { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--linea); border: 1px solid var(--linea); }
.piede__righe p { background: var(--s); padding: 20px; font-size: 15px; color: var(--tenue); }
.piede a { text-decoration: none; }
.piede a:hover { color: var(--p); }

/* ---------- whatsapp e avvisi ---------- */
.whatsapp { position: fixed; right: 18px; bottom: 18px; z-index: 40; width: 56px; height: 56px; border-radius: 8px; display: grid; place-items: center; background: var(--p); color: var(--su-p); box-shadow: 0 14px 30px -12px #000; transition: transform .45s var(--molla), opacity .3s, visibility .3s; }
.whatsapp svg { width: 28px; height: 28px; }
html.js .whatsapp { opacity: 0; visibility: hidden; transform: translateY(16px); }
html.js .whatsapp.su { opacity: 1; visibility: visible; transform: none; }
.avviso-carrello { position: fixed; left: 50%; top: calc(var(--testata-h) + 12px); transform: translate(-50%, -12px); z-index: 60; background: var(--p); color: var(--su-p); padding: 12px 18px; border-radius: var(--r); font-weight: 650; opacity: 0; pointer-events: none; transition: opacity .25s, transform .35s var(--molla); max-width: calc(100% - 32px); text-align: center; }
.avviso-carrello.visibile { opacity: 1; transform: translate(-50%, 0); }

/* ---------- apertura: gesso e cancellino ---------- */
.apertura { background: var(--s); background-image: radial-gradient(ellipse at 30% 40%, color-mix(in oklab, var(--t) 6%, transparent), transparent 60%), radial-gradient(ellipse at 75% 70%, color-mix(in oklab, var(--t) 4%, transparent), transparent 55%); display: grid; place-items: center; }
.apertura__lavagna { width: min(92vw, 1000px); height: auto; overflow: visible; }
.ap-scritta { font-family: var(--f-gesso); font-weight: 600; fill: var(--t); opacity: .94; }
.ap-traccia { fill: none; stroke: var(--t); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; opacity: .85; }
.ap-traccia--gialla { stroke: var(--p); stroke-width: 6; opacity: 1; }
.cancellino { position: absolute; left: 0; top: 50%; width: clamp(60px, 6vw, 90px); height: clamp(200px, 36vh, 320px); margin-top: calc(clamp(200px, 36vh, 320px) / -2); border-radius: 8px; background: var(--a); box-shadow: 0 20px 40px -18px #000; transform: translateX(-160px); margin-left: -40px; }
.cancellino span { position: absolute; left: 0; right: 0; bottom: 0; height: 38%; border-radius: 0 0 8px 8px; background: color-mix(in oklab, var(--t) 78%, var(--s)); }

/* superficie chiara (palette del configuratore) */
html.sfondo-chiaro .lavagna { background: color-mix(in oklab, var(--s) 90%, var(--t)); box-shadow: inset 0 0 40px color-mix(in oklab, var(--t) 10%, transparent), 0 30px 60px -30px color-mix(in oklab, var(--t) 40%, transparent); border-color: color-mix(in oklab, var(--s) 70%, var(--t)); }
html.sfondo-chiaro .scheda, html.sfondo-chiaro .whatsapp { box-shadow: 0 -20px 50px -34px color-mix(in oklab, var(--t) 40%, transparent); }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .nav, .nascondi-mobile { display: none; }
  .menu-tasto { display: inline-flex; align-items: center; }
  .materie__griglia { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .negozio__griglia { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  :root { --testata-h: 66px; }
  .eroe__griglia { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: none; height: auto; min-height: 0; }
  .cella--titolo { grid-column: 1 / -1; min-height: 0; gap: 18px; }
  .cella--testo { grid-column: 1 / -1; grid-row: auto; }
  .cella--num:nth-of-type(3), .cella--num:nth-of-type(4) { grid-column: auto; grid-row: auto; }
  .cella--foto { grid-column: 1 / -1; grid-row: auto; min-height: 0; aspect-ratio: 4 / 3; }
  .metodo__corpo { grid-template-columns: 1fr; }
  .lavagna { display: none; }
  .passi { padding: 0; gap: 44px; }
  html.js .passo { opacity: 1; }
  .passo__gesso { display: block; margin-top: 18px; padding: 16px 20px; background: color-mix(in oklab, var(--s) 82%, #2c3e36); border: 6px solid color-mix(in oklab, var(--s) 55%, #8a6a45); border-radius: 8px; font: 600 28px/1.1 var(--f-gesso); color: var(--t); }
  .passo__gesso--giallo { color: var(--p); }
  .passo__gesso--azzurro { color: var(--a); }
  .risultati__griglia { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scheda { grid-template-columns: 1fr; min-height: 0; }
  .scheda img { aspect-ratio: 16 / 9; height: auto; order: -1; }
  .scheda, .scheda:nth-child(n) { position: relative; top: auto; }
  .tutor__griglia, .contatti__griglia { grid-template-columns: 1fr; }
  .pareri__griglia { grid-template-columns: 1fr; }
  .piede__righe { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .marchio__nome { font-size: 17px; max-width: 13ch; }
  .marchio__segno { width: 36px; height: 36px; font-size: 26px; }
  .testata__riga { gap: 8px; }
  .cella { padding: 18px 16px; }

  .materie__griglia { grid-template-columns: 1fr; }
  .materia { min-height: 0; flex-direction: row; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; }
  .materia__n { margin: 0; }
  .materia h3 { margin: 0; }
  .materia p { flex-basis: 100%; }
  .risultato { min-height: 170px; }
  .negozio__griglia { grid-template-columns: 1fr; }
  .tutor__lista li { grid-template-columns: 40px 1fr; }
  .tutor__lista span:not(.tutor__n) { grid-column: 2; text-align: left; }
  .tutor__lista em { grid-column: 2; }
  .modulo__riga { grid-template-columns: 1fr; }
  .eroe__tasti .tasto { flex: 1 1 auto; }
  .whatsapp { width: 52px; height: 52px; right: 14px; bottom: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: .001ms !important; }
  html.js .passo { opacity: 1; }
  html.js .riempi { background: none; color: var(--t); }
}