/* NEON — 02 Impalcatura. Carta, serif, colonne asimmetriche. Tutto CSS, quasi. */
:root{
  --carta:#f2eee3;
  --carta-2:#f8f4ea;
  --carta-3:#e9e2d2;
  --inchiostro:#16120e;
  --prosa:#332d25;
  --tenue:#6f6757;
  --filo:rgba(22,18,14,.18);
  --filo-2:rgba(22,18,14,.09);
  --rosso:#d8482a;
  --oliva:#3f4a34;
  --blu:#26456b;
  --serif:"Plex Serif",Georgia,serif;
  --sans:"Plex Sans",system-ui,sans-serif;
  --mono:"Plex Mono",ui-monospace,monospace;
  --margine:clamp(18px,4vw,52px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--carta);color:var(--inchiostro);font-family:var(--sans);
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:radial-gradient(120% 60% at 80% -10%,#fbf8f1 0%,transparent 60%);
}
h1,h2,h3,p,ul,ol,dl,dd,dt,figure,pre{margin:0}
ul,ol{list-style:none;padding:0}
a{color:inherit}
code{font-family:var(--mono);font-size:.86em;background:rgba(22,18,14,.06);padding:.08em .3em}
pre code{background:none;padding:0;font-size:inherit}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.mono{font-family:var(--mono)}
:focus-visible{outline:2px solid var(--rosso);outline-offset:3px}

/* ---------- progresso di scorrimento ---------- */
.progresso{
  position:fixed;left:0;top:0;height:2px;width:100%;background:var(--rosso);z-index:60;
  transform:scaleX(0);transform-origin:0 50%;
  animation:cresce linear;animation-timeline:scroll(root block);
}
@keyframes cresce{to{transform:scaleX(1)}}

/* ---------- testata ---------- */
.testata{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:24px;
  height:62px;padding:0 var(--margine);border-bottom:1px solid var(--filo);
  background:rgba(242,238,227,.9);backdrop-filter:blur(10px);
}
.marchio{display:flex;align-items:center;gap:10px;text-decoration:none}
.marchio-n{
  display:grid;place-items:center;width:26px;height:26px;border:1px solid var(--inchiostro);
  font-family:var(--serif);font-weight:600;font-size:14px;
}
.marchio-parola{font-family:var(--mono);font-size:12px;letter-spacing:.26em}
.testata-voce{margin-left:auto;font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--tenue)}
.testata-num{color:var(--rosso);margin-right:7px}
.testata-nav{display:flex;gap:18px;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--tenue);white-space:nowrap}
.testata-nav a{text-decoration:none;border-bottom:1px solid transparent;padding-bottom:2px}
.testata-nav a:hover{color:var(--rosso);border-bottom-color:var(--rosso)}

main{position:relative}

/* ---------- apertura ---------- */
.apertura{
  position:relative;max-width:1320px;margin:0 auto;padding:clamp(52px,9vh,108px) var(--margine) clamp(30px,6vh,64px);
  overflow:hidden;
}
.occhiello{font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--tenue);display:flex;align-items:center;gap:10px}
.occhiello::before{content:"";width:26px;height:1px;background:var(--rosso)}
.apertura h1{
  position:relative;z-index:1;font-family:var(--serif);font-weight:300;
  font-size:clamp(54px,10.4vw,142px);line-height:.9;letter-spacing:-.035em;
  margin:clamp(18px,3vh,30px) 0 0;max-width:12ch;
}
.apertura h1 em{font-style:italic;color:var(--rosso)}
.apertura-piede{
  position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);
  gap:clamp(24px,5vw,64px);align-items:end;margin-top:clamp(28px,5vh,48px);
  border-top:1px solid var(--filo);padding-top:24px;
}
.lead{font-family:var(--serif);font-size:clamp(17px,1.6vw,20px);line-height:1.55;color:var(--prosa);
  max-width:56ch}
.scheda-tecnica{display:flex;flex-direction:column;border-top:1px solid var(--filo-2)}
.scheda-tecnica div{display:flex;justify-content:space-between;gap:12px;padding:6px 0;
  border-bottom:1px solid var(--filo-2);font-family:var(--mono);font-size:10.5px;
  letter-spacing:.08em;text-transform:uppercase}
.scheda-tecnica dt{color:var(--tenue)}
.scheda-tecnica dd{color:var(--inchiostro)}
.numero-gigante{
  position:absolute;right:-.04em;top:.18em;z-index:0;font-family:var(--serif);font-weight:300;
  font-size:clamp(160px,30vw,430px);line-height:.8;color:transparent;
  -webkit-text-stroke:1px rgba(22,18,14,.09);letter-spacing:-.05em;pointer-events:none;user-select:none;
}

/* ---------- corpo documento ---------- */
.corpo{
  display:grid;grid-template-columns:206px minmax(0,1fr);gap:clamp(28px,4vw,56px);
  max-width:1320px;margin:0 auto;padding:0 var(--margine) clamp(60px,10vh,110px);
  align-items:start;
}
.indice{position:sticky;top:86px}
.indice-etichetta{font-family:var(--mono);font-size:9.5px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--tenue);padding-bottom:8px;border-bottom:1px solid var(--filo)}
.indice ol{margin-top:10px}
.indice li{border-bottom:1px solid var(--filo-2)}
.indice a{display:flex;gap:10px;padding:7px 0;text-decoration:none;font-family:var(--mono);
  font-size:11px;line-height:1.4;color:var(--prosa);transition:color .15s}
.indice a span{color:var(--tenue);flex:none}
.indice a:hover{color:var(--rosso)}
.indice a:hover span{color:var(--rosso)}
.indice-nota{margin-top:16px;font-size:11.5px;line-height:1.55;color:var(--tenue)}

.documento{min-width:0}
.dimostrazione{
  padding:clamp(34px,6vh,64px) 0 clamp(30px,5vh,56px);
  border-top:1px solid var(--filo);scroll-margin-top:84px;
}
.dimostrazione:first-child{border-top:1px solid var(--inchiostro)}
.dim-testa{display:grid;grid-template-columns:58px minmax(0,1fr);gap:16px;align-items:start}
.dim-num{font-family:var(--serif);font-weight:300;font-size:34px;line-height:1;color:var(--rosso)}
.dim-occhiello{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--tenue)}
.dim-testa h2{font-family:var(--serif);font-weight:300;font-size:clamp(26px,3.2vw,40px);
  line-height:1.12;letter-spacing:-.02em;margin-top:4px}
.dim-testa h2 code{font-size:.82em;background:none;padding:0;color:var(--rosso)}
.dim-griglia{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:clamp(24px,4vw,48px);margin-top:clamp(18px,3vh,30px);
}
.dim-testo{font-size:15.5px;line-height:1.7;color:var(--prosa)}
.dim-testo p{margin-bottom:1em}
.dim-testo p:last-child{margin-bottom:0}
.dim-testo code{color:var(--inchiostro)}
.dim-demo{min-width:0}
.codice{
  margin-top:clamp(18px,3vh,28px);padding:14px 16px;background:var(--carta-3);
  border-left:2px solid var(--rosso);font-family:var(--mono);font-size:11.5px;line-height:1.7;
  color:#2b251d;overflow-x:auto;
}
.codice code{background:none;padding:0;font-size:inherit;white-space:pre}

/* ---------- 01 :has() ---------- */
.modulo{
  border:1px solid var(--inchiostro);background:var(--carta-2);padding:18px;
  display:flex;flex-direction:column;gap:11px;transition:box-shadow .2s,transform .2s;
}
.modulo:has(input:focus){box-shadow:6px 6px 0 rgba(216,72,42,.16);transform:translate(-1px,-1px)}
.modulo-titolo{font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--tenue)}
.campo{display:grid;gap:3px;border:1px solid var(--filo);background:#fbf8f1;padding:7px 10px 8px;
  transition:border-color .15s,background .15s}
.campo-nome{font-family:var(--mono);font-size:9px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--tenue)}
.campo input{border:0;background:none;font-family:var(--sans);font-size:15px;color:var(--inchiostro);
  padding:0;outline:none;min-width:0;width:100%}
.campo input::placeholder{color:#a49a88}
.campo-errore{display:none;font-family:var(--mono);font-size:9.5px;color:var(--rosso);letter-spacing:.04em}
.campo:has(input:invalid:not(:placeholder-shown)){border-color:var(--rosso);background:#fdf1ec}
.campo:has(input:invalid:not(:placeholder-shown)) .campo-nome{color:var(--rosso)}
.campo:has(input:invalid:not(:placeholder-shown)) .campo-errore{display:block}
.campo:has(input:focus-visible){border-color:var(--inchiostro)}
.consenso{display:flex;align-items:flex-start;gap:8px;font-size:12.5px;line-height:1.5;color:var(--prosa);
  cursor:pointer;padding-top:3px}
.consenso input{width:14px;height:14px;accent-color:var(--rosso);margin:2px 0 0;flex:none}
.modulo-invia{
  align-self:flex-start;background:var(--inchiostro);color:var(--carta);border:0;cursor:pointer;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  padding:9px 16px;transition:background .15s,opacity .15s,transform .15s;
}
.modulo-invia:hover{background:var(--rosso)}
.modulo:not(:has(.consenso input:checked)) .modulo-invia{opacity:.32;pointer-events:none}
.modulo:has(.consenso input:checked) .modulo-invia{background:var(--rosso)}
.modulo-esito{margin-top:2px;font-family:var(--mono);font-size:10.5px;color:var(--oliva)}

.scelte{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:12px}
.scheda-colore{--c:#a33;border:1px solid var(--filo);background:transparent;padding:11px;
  transition:transform .18s,border-color .18s,background .18s}
.sc-rosso{--c:var(--rosso)}
.sc-verde{--c:var(--oliva)}
.sc-blu{--c:var(--blu)}
.scheda-colore h3{font-family:var(--serif);font-weight:400;font-size:19px;line-height:1.1}
.scheda-colore p{font-size:11.5px;color:var(--tenue);line-height:1.45;margin:4px 0 8px}
.scheda-colore label{display:flex;align-items:center;gap:6px;font-family:var(--mono);font-size:9.5px;
  letter-spacing:.1em;text-transform:uppercase;color:var(--prosa);cursor:pointer}
.scheda-colore input{accent-color:var(--c);margin:0}
.scheda-colore:has(input:checked){border-color:var(--c);background:color-mix(in srgb,var(--c) 7%,transparent);
  transform:translateY(-4px)}
.scheda-colore:has(input:checked) h3{color:var(--c)}

/* ---------- 02 container query ---------- */
.ridimensionabile{
  resize:horizontal;overflow:hidden;width:620px;max-width:100%;min-width:230px;
  border:1px solid var(--inchiostro);background:var(--carta-2);padding:14px 14px 22px;
  box-shadow:6px 6px 0 rgba(22,18,14,.07);
}
.cq{container-type:inline-size}
.cq-stato{font-family:var(--mono);font-size:9px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--tenue);padding-bottom:8px;border-bottom:1px dashed var(--filo)}
.cq-s{color:var(--rosso)}
.cq-m,.cq-l{display:none;color:var(--oliva)}
.cq-griglia{display:grid;grid-template-columns:minmax(0,1fr);gap:9px;margin-top:10px}
.cq-griglia article{border:1px solid var(--filo);background:#fbf8f1;padding:10px;
  display:grid;grid-template-columns:26px minmax(0,1fr);gap:2px 8px;align-items:start}
.cq-mini{grid-row:span 2;font-family:var(--serif);font-size:24px;line-height:1;color:var(--rosso)}
.cq-griglia h3{font-family:var(--serif);font-weight:400;font-size:16px;line-height:1.1}
.cq-griglia p{font-size:11.5px;color:var(--tenue);line-height:1.4;grid-column:2}
@container (min-width:420px){
  .cq-s{display:none}
  .cq-m{display:inline}
  .cq-griglia{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@container (min-width:620px){
  .cq-m{display:none}
  .cq-l{display:inline}
  .cq-griglia{grid-template-columns:repeat(3,minmax(0,1fr))}
  .cq-griglia article{grid-template-columns:1fr}
  .cq-mini{grid-row:auto;font-size:20px}
  .cq-griglia p{grid-column:auto}
}
.maniglia-nota{margin-top:10px;font-family:var(--mono);font-size:9px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--tenue)}

/* ---------- 03 subgrid ---------- */
.interruttore{display:inline-flex;align-items:center;gap:8px;cursor:pointer;font-size:13px;
  color:var(--prosa);margin-bottom:12px;user-select:none}
.interruttore input{position:absolute;opacity:0;width:1px;height:1px}
.leva{position:relative;width:30px;height:15px;border:1px solid var(--inchiostro);background:transparent;
  flex:none;transition:background .2s}
.leva::after{content:"";position:absolute;left:1px;top:1px;width:11px;height:11px;background:var(--inchiostro);
  transition:transform .2s,background .2s}
.interruttore input:checked + .leva{background:var(--rosso);border-color:var(--rosso)}
.interruttore input:checked + .leva::after{transform:translateX(15px);background:var(--carta-2)}
.interruttore input:focus-visible + .leva{outline:2px solid var(--rosso);outline-offset:2px}
.sg-griglia{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  grid-template-rows:auto auto auto;column-gap:14px;align-items:start;
}
.sg-scheda{
  display:grid;grid-row:span 3;grid-template-rows:subgrid;row-gap:6px;
  border-top:1px solid var(--inchiostro);padding-top:10px;min-width:0;
}
.sg-scheda h3{font-family:var(--serif);font-weight:400;font-size:20px;line-height:1.1}
.sg-scheda p{font-size:12.5px;line-height:1.5;color:var(--prosa)}
.sg-piede{display:flex;justify-content:space-between;gap:8px;border-top:1px solid var(--filo-2);
  padding-top:5px;font-family:var(--mono);font-size:9.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--tenue);align-self:end}
.prova-subgrid:has(#sg:not(:checked)) .sg-griglia{grid-template-rows:none}
.prova-subgrid:has(#sg:not(:checked)) .sg-scheda{grid-row:auto;grid-template-rows:auto auto auto}
.prova-subgrid:has(#sg:not(:checked)) .sg-piede{margin-top:8px}

/* ---------- 04 3D ---------- */
.prospettiva{
  perspective:900px;display:grid;place-items:center;min-height:300px;padding:26px;
  background:var(--carta-3);border:1px solid var(--filo);overflow:hidden;
}
.mazzo{
  position:relative;width:172px;height:230px;transform-style:preserve-3d;
  transform:rotateY(calc(var(--giro,22) * 1deg)) rotateX(-7deg);transition:transform .1s linear;
}
.carta3d{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .25s ease}
.carta3d:nth-child(1){transform:translateZ(30px) translateX(-22px) translateY(4px)}
.carta3d:nth-child(2){transform:translateZ(0) translateX(0) translateY(0)}
.carta3d:nth-child(3){transform:translateZ(-30px) translateX(22px) translateY(-4px)}
.carta3d:nth-child(1):hover{transform:translateZ(66px) translateX(-22px) translateY(-2px)}
.carta3d:nth-child(2):hover{transform:translateZ(72px) translateX(0) translateY(-8px)}
.carta3d:nth-child(3):hover{transform:translateZ(66px) translateX(22px) translateY(-10px)}
.faccia{
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  transform:rotateY(0deg);border:1px solid var(--inchiostro);
  padding:14px;display:flex;flex-direction:column;justify-content:space-between;
}
.fronte{background:var(--carta-2);opacity:1;transition:opacity .18s ease}
.retro{opacity:0;transition:opacity .18s ease}
.mazzo.girato .fronte{opacity:0}
.mazzo.girato .retro{opacity:1}
.fronte span{font-family:var(--mono);font-size:11px;color:var(--rosso)}
.fronte strong{font-family:var(--serif);font-weight:300;font-size:30px;line-height:1}
.retro{transform:rotateY(180deg);background:var(--inchiostro);color:var(--carta);
  font-family:var(--serif);font-size:26px;font-style:italic}
.retro-num{font-family:var(--mono);font-size:10px;font-style:normal;letter-spacing:.16em;opacity:.7}
.retro-parola{font-style:italic}
.f2 .retro{background:var(--rosso)}
.f3 .retro{background:var(--oliva)}
.comandi3d{display:flex;align-items:center;gap:16px;margin-top:12px}
.cursore3d{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:9.5px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--tenue);flex:1}
.cursore3d input[type="range"]{-webkit-appearance:none;appearance:none;flex:1;height:18px;
  background:transparent;cursor:pointer}
.cursore3d input[type="range"]::-webkit-slider-runnable-track{height:2px;background:var(--inchiostro)}
.cursore3d input[type="range"]::-moz-range-track{height:2px;background:var(--inchiostro)}
.cursore3d input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;width:12px;height:12px;
  background:var(--carta-2);border:1px solid var(--inchiostro);margin-top:-5px}
.cursore3d input[type="range"]::-moz-range-thumb{width:12px;height:12px;background:var(--carta-2);
  border:1px solid var(--inchiostro);border-radius:0}
.bottone3d{border:1px solid var(--inchiostro);background:transparent;color:var(--inchiostro);
  font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;padding:6px 12px;
  cursor:pointer;transition:background .15s,color .15s}
.bottone3d:hover,.bottone3d[aria-pressed="true"]{background:var(--inchiostro);color:var(--carta)}

/* ---------- 05 scroll-driven ---------- */
.passi{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.passo{
  border:1px solid var(--filo);background:var(--carta-2);padding:14px;
  animation:appari linear both;animation-timeline:view();
  animation-range:entry 6% cover 38%;
}
.passo-num{font-family:var(--mono);font-size:9.5px;color:var(--rosso);letter-spacing:.16em}
.passo h3{font-family:var(--serif);font-weight:400;font-size:22px;line-height:1.1;margin-top:6px}
.passo p{font-size:11.5px;color:var(--tenue);line-height:1.45;margin-top:4px}
@keyframes appari{from{opacity:.18;transform:translateY(22px)}to{opacity:1;transform:none}}
@supports not (animation-timeline: view()){
  .passo{opacity:1;animation:none}
}

/* ---------- 06 colore ---------- */
.mood{--a:#dfe7d4;--b:#3f4a34;--tinta:var(--b)}
.mood:has(input[value="teso"]:checked){--a:#ffe0cf;--b:#8f2f18;--tinta:#8f2f18}
.mood:has(input[value="notturno"]:checked){--a:#9fb4d0;--b:#111a26;--tinta:#22344d}
.mood-scelte{display:flex;gap:0;border:1px solid var(--inchiostro);padding:0;margin:0 0 10px}
.mood-scelte label{flex:1;cursor:pointer}
.mood-scelte input{position:absolute;opacity:0;width:1px;height:1px}
.mood-scelte span{display:block;text-align:center;padding:7px 6px;font-family:var(--mono);font-size:9.5px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--tenue);border-right:1px solid var(--filo);
  transition:background .2s,color .2s}
.mood-scelte label:last-child span{border-right:0}
.mood-scelte input:checked + span{background:var(--inchiostro);color:var(--carta)}
.mood-scelte input:focus-visible + span{outline:2px solid var(--rosso);outline-offset:-2px}
.mood-vista{
  background:linear-gradient(135deg,var(--a),var(--b));padding:20px;min-height:186px;
  display:flex;flex-direction:column;justify-content:flex-end;gap:6px;
  color:color-mix(in oklab,var(--b) 82%,black);transition:background .4s,color .4s;
}
.mood-titolo{font-family:var(--serif);font-size:30px;line-height:1;font-weight:300}
.mood-testo{font-size:12px;font-family:var(--mono)}
.mood-campioni{display:flex;gap:6px;margin-top:8px}
.mc{width:34px;height:18px;border:1px solid rgba(0,0,0,.18)}
.mc1{background:color-mix(in oklab,var(--a) 75%,var(--b))}
.mc2{background:color-mix(in oklab,var(--a) 45%,var(--b))}
.mc3{background:color-mix(in oklab,var(--a) 20%,var(--b))}
.mc4{background:color-mix(in oklab,var(--b) 60%,black)}

/* ---------- chiusura e piede ---------- */
.chiusura{border-top:1px solid var(--inchiostro);margin-top:20px;padding-top:34px}
.chiusura-occhiello{font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--tenue)}
.chiusura-testo{font-family:var(--serif);font-weight:300;font-size:clamp(24px,2.8vw,34px);line-height:1.3;
  letter-spacing:-.01em;max-width:46ch;margin-top:10px}
.chiusura-link{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:26px}
.chiusura-link a{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  text-decoration:none;border-bottom:1px solid var(--filo);padding-bottom:4px;transition:color .15s}
.chiusura-link a span{color:var(--rosso);margin-left:6px}
.chiusura-link a:hover{color:var(--rosso);border-bottom-color:var(--rosso)}

.piede{
  display:grid;grid-template-columns:minmax(0,1.7fr) auto auto;gap:26px;align-items:end;
  max-width:1320px;margin:0 auto;padding:30px var(--margine) 40px;
  border-top:1px solid var(--filo);font-size:12px;color:var(--tenue);
}
.piede-marchio{font-family:var(--mono);color:var(--inchiostro);letter-spacing:.22em}
.piede-meta{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase}
.piede a{color:var(--inchiostro);text-decoration:none;border-bottom:1px solid var(--filo)}
.piede a:hover{color:var(--rosso);border-color:var(--rosso)}

/* ---------- adattamenti ---------- */
@media (max-width:1080px){
  .corpo{grid-template-columns:minmax(0,1fr)}
  .indice{position:static;order:2;margin-top:30px}
  .indice ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
  .indice li{border-bottom:1px solid var(--filo-2)}
  .indice a{padding:6px 0}
  .indice-nota{max-width:60ch}
  .documento{order:1}
  .dim-griglia{grid-template-columns:minmax(0,1fr);gap:26px}
  .apertura-piede{grid-template-columns:minmax(0,1fr);gap:24px}
  .scheda-tecnica{max-width:340px}
}
@media (max-width:820px){
  .testata{flex-wrap:wrap;height:auto;padding:10px var(--margine);gap:8px 18px}
  .testata-voce{margin-left:auto}
  .testata-nav{width:100%;gap:14px;font-size:9.5px}
  .apertura{padding-top:44px}
  .numero-gigante{font-size:180px;right:-8px;top:8px}
  .sg-griglia{grid-template-columns:minmax(0,1fr);grid-template-rows:none;gap:16px}
  .sg-scheda{grid-row:auto;grid-template-rows:auto auto auto}
  .sg-piede{margin-top:6px}
  .scelte{grid-template-columns:minmax(0,1fr)}
  .passi{grid-template-columns:minmax(0,1fr)}
  .piede{grid-template-columns:minmax(0,1fr);gap:12px}
  .dim-testa{grid-template-columns:40px minmax(0,1fr);gap:10px}
  .dim-num{font-size:26px}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .testata-nav{gap:10px;font-size:9px;letter-spacing:.04em}
  .apertura h1{font-size:clamp(44px,14vw,64px)}
  .modulo{padding:14px}
  .ridimensionabile{width:100%;padding:10px 10px 20px}
  .prospettiva{min-height:250px;padding:16px}
  .mazzo{width:150px;height:200px}
  .comandi3d{flex-direction:column;align-items:stretch;gap:10px}
  .cursore3d{width:100%}
  .codice{font-size:10.5px;padding:12px}
  .indice ol{grid-template-columns:minmax(0,1fr)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important}
  .passo{opacity:1}
}