/* L'Etichetta sas — home v1.0 · il nastro in rotativa */

@font-face{font-family:"Archivo";src:url("assets/fonts/Archivo-latin.woff2") format("woff2");font-weight:100 900;font-stretch:62% 125%;font-display:swap}
@font-face{font-family:"Red Hat Mono";src:url("assets/fonts/RedHatMono-latin.woff2") format("woff2");font-weight:300 700;font-display:swap}

:root{
  --carta:#F6F8FA;
  --bianco:#fff;
  --liner:#EEF1F4;
  --inchiostro:#12151A;
  --inchiostro-2:#3B434E;
  --filetto:#C3CBD4;
  --ciano:#00ABE4;
  --magenta:#E5007D;
  --giallo:#FFD60A;
  --oro:#C79A2B;

  --rail:72px;
  --pad:clamp(1.25rem,4vw,3.5rem);
  --max:80rem;
  --uscita:cubic-bezier(.16,1,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:5rem;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--carta);color:var(--inchiostro);
  font:400 1.0625rem/1.55 "Archivo",system-ui,sans-serif;font-stretch:100%;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-underline-offset:.2em;text-decoration-thickness:1px}
::selection{background:var(--giallo);color:var(--inchiostro)}
:focus-visible{outline:3px solid var(--inchiostro);outline-offset:3px;border-radius:2px}
.sez--magenta :focus-visible,.sez--ciano :focus-visible{outline-color:var(--inchiostro)}
html{scrollbar-color:var(--inchiostro) var(--liner)}
::-webkit-scrollbar{width:12px}
::-webkit-scrollbar-track{background:var(--liner)}
::-webkit-scrollbar-thumb{background:var(--inchiostro);border:3px solid var(--liner);border-radius:8px}

h1,h2,h3{font-family:"Archivo",sans-serif;font-stretch:72%;font-weight:800;letter-spacing:-.01em;line-height:.95;margin:0;text-wrap:balance}
h1{font-size:clamp(2.9rem,5.4vw,4.75rem)}
h2{font-size:clamp(2.3rem,5vw,4.25rem)}
h3{font-size:clamp(1.5rem,2.4vw,2rem);font-stretch:78%}
p{margin:0;max-width:62ch;text-wrap:pretty}

.salta{position:fixed;left:1rem;top:-4rem;z-index:100;background:var(--inchiostro);color:#fff;padding:.7rem 1rem;border-radius:4px;transition:top .2s}
.salta:focus{top:1rem}

/* ---------- nastro laterale ---------- */
.rail{display:none}
.barra{position:fixed;inset:0 0 auto 0;height:6px;z-index:60;display:flex;pointer-events:none}
.barra i{flex:1;transform:scaleX(0);transform-origin:left;background:var(--ciano)}
.barra i:nth-child(2){background:var(--magenta)}
.barra i:nth-child(3){background:var(--giallo)}
.barra i:nth-child(4){background:var(--inchiostro)}
.barra i:nth-child(5){background:var(--oro)}

@media (min-width:1100px){
  .barra{display:none}
  .rail{display:block;position:fixed;inset:0 auto 0 0;width:var(--rail);z-index:40;background:var(--liner);border-right:1px solid var(--filetto)}
  .rail svg{position:absolute;left:4px;top:0}
  .mul{mix-blend-mode:multiply}
  .rail__sigle{list-style:none;margin:0;padding:0}
  .rail__sigle li{position:absolute;left:68px;transform:translateY(-50%);font:600 .7rem/1 "Red Hat Mono",monospace;letter-spacing:.04em;color:var(--inchiostro-2);background:var(--carta);padding:.2rem .35rem;border-radius:3px;opacity:0;transition:opacity .4s}
  .rail__sigle li.on{opacity:1}
  body{padding-left:var(--rail)}
}
.mul{mix-blend-mode:multiply}

/* ---------- testata ---------- */
.testata{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:1.25rem;
  padding:.65rem var(--pad);background:rgb(246 248 250 / .94);backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;transition:border-color .25s;
}
.testata.scrolled{border-color:var(--filetto)}
.testata__logo{display:block;margin-right:auto}
.testata__logo img{height:44px;width:auto;mix-blend-mode:multiply}
.testata__nav{display:none;gap:1.5rem;font-stretch:80%;font-weight:600;font-size:.98rem}
.testata__nav a{position:relative;text-decoration:none;padding:.4rem 0}
.testata__nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--inchiostro);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--uscita)}
.testata__nav a:hover::after{transform:none}
.testata__tel{display:none;font:500 .9rem "Red Hat Mono",monospace;text-decoration:none;white-space:nowrap}
@media (min-width:1000px){.testata__nav{display:flex}.testata__logo{margin-right:0}.testata__nav{margin-right:auto;margin-left:2.5rem}}
@media (min-width:640px){.testata__tel{display:inline}}

/* ---------- pulsanti ---------- */
.btn{
  --base:var(--inchiostro);--hov:var(--magenta);--fg:#fff;--fgh:#fff;
  display:inline-flex;align-items:center;gap:.6rem;
  font:700 1.02rem/1 "Archivo",sans-serif;font-stretch:90%;
  padding:1rem 1.5rem;border:2px solid var(--inchiostro);border-radius:6px;
  text-decoration:none;cursor:pointer;
  color:var(--fg);background-color:var(--base);
  background-image:linear-gradient(var(--hov),var(--hov));background-repeat:no-repeat;background-size:0% 100%;
  transition:background-size .45s var(--uscita),color .3s var(--uscita);
}
.btn:hover,.btn:focus-visible{background-size:100% 100%;color:var(--fgh)}
.btn--linea{--base:transparent;--hov:var(--giallo);--fg:var(--inchiostro);--fgh:var(--inchiostro)}
.btn--sm{padding:.7rem 1rem;font-size:.92rem}
.sez--magenta .btn--nero{--hov:var(--giallo);--fgh:var(--inchiostro)}

/* ---------- apertura ---------- */
.apertura{
  max-width:var(--max);margin:0 auto;padding:clamp(1.25rem,2.4vw,2.25rem) var(--pad) clamp(3rem,6vw,5rem);
  display:grid;gap:1.5rem 3rem;grid-template-columns:minmax(0,1fr);
}
@media (min-width:900px){
  .apertura{grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);align-items:center}
  .apertura__foto,.spec{grid-column:1 / -1}
}
.apertura__sotto{margin-top:1.1rem;font-size:clamp(1.05rem,1.4vw,1.2rem);color:var(--inchiostro-2);max-width:56ch}
.apertura__azioni{display:flex;flex-wrap:wrap;align-items:center;gap:.8rem 1.5rem;margin-top:1.4rem}
.chiama{font:500 .92rem "Red Hat Mono",monospace;text-decoration-thickness:1px}

.flap{--bg:var(--inchiostro);--fg:var(--carta);position:relative;display:inline-block;padding:0 .14em;min-width:.62em;text-align:center;line-height:.96;font-feature-settings:"tnum";perspective:420px}
.flap>span{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:var(--bg);color:var(--fg);border-radius:.1em;backface-visibility:hidden}
.flap>.f-size{position:static;display:block;visibility:hidden;background:none;padding:0}
.flap .f-bt{clip-path:inset(0 0 50% 0)}
.flap .f-bb{clip-path:inset(50% 0 0 0)}
.flap .f-ft{clip-path:inset(0 0 50% 0);transform-origin:50% 50%;z-index:2}
.flap .f-fb{clip-path:inset(50% 0 0 0);transform-origin:50% 50%;z-index:2;transform:rotateX(90deg);visibility:hidden}
.flap::after{content:"";position:absolute;left:0;right:0;top:50%;height:2px;background:var(--carta);opacity:.35;z-index:5}
.flap.anima .f-ft{animation:cadeSu .26s ease-in forwards}
.flap.anima .f-fb{visibility:visible;animation:cadeGiu .26s .26s ease-out forwards}
@keyframes cadeSu{to{transform:rotateX(-90deg)}}
@keyframes cadeGiu{from{transform:rotateX(90deg)}to{transform:rotateX(0)}}

.apertura__etichetta{justify-self:center;margin-top:1.25rem;width:min(100%,24rem);position:relative}
.et-strati{width:100%;height:auto;overflow:visible}
.strato{transform-box:fill-box;transform-origin:center}
.strato--c,.strato--m,.strato--y{mix-blend-mode:multiply}
.didascalia{display:block;margin-top:1rem;font:500 .8rem/1.3 "Red Hat Mono",monospace;color:var(--inchiostro-2);text-align:center}
@media (max-width:899px){.apertura__etichetta{width:100%;justify-self:stretch;margin-top:.5rem}.apertura__etichetta .et-strati--v{display:none}.apertura__etichetta .et-strati--h{display:block}.didascalia{text-align:left}}
.et-strati--h{display:block;width:100%;height:auto;overflow:visible}
.apertura__etichetta .et-strati--v{display:none}
.peel--h{transform-origin:414px 244px}

.apertura__foto{margin:0;position:relative;border-radius:10px;overflow:hidden;background:var(--liner);aspect-ratio:3/1}
.apertura__foto>img{width:100%;height:100%;object-fit:cover}
@media (max-width:640px){.apertura__foto{aspect-ratio:4/3}.apertura__foto>img{object-position:55% 50%}}

.web{position:absolute;left:0;right:0;bottom:0;height:34%;min-height:76px;background:rgb(238 241 244 / .92);border-top:1px solid var(--filetto);overflow:hidden}
.web__pista{position:absolute;left:0;top:0;bottom:0;display:flex;align-items:center;gap:14px;padding:0 7px;will-change:transform}
.web__et{flex:none;position:relative;height:72%;aspect-ratio:1.5/1;background:#fff;border:1px solid var(--filetto);border-radius:7px;overflow:hidden}
.web__et i{position:absolute;display:block}
.web__reg{flex:none;width:12px;height:12px;position:relative}
.web__reg::before,.web__reg::after{content:"";position:absolute;background:var(--inchiostro)}
.web__reg::before{left:5.5px;top:0;width:1px;height:12px}
.web__reg::after{top:5.5px;left:0;height:1px;width:12px}

.spec{display:flex;flex-wrap:wrap;gap:0;margin:0;max-width:none;font:500 .82rem/1 "Red Hat Mono",monospace;text-transform:uppercase;letter-spacing:.04em;border-top:1px solid var(--inchiostro);border-bottom:1px solid var(--inchiostro)}
.spec span{padding:.9rem 1.1rem;border-right:1px solid var(--filetto)}
.spec span:last-child{border-right:0}
@media (max-width:899px){
  .spec{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--filetto)}
  .spec span{background:var(--carta);border:0;padding:.85rem .4rem;text-align:center;font-size:.76rem;display:flex;align-items:center;justify-content:center}
}
@media (max-width:560px){.spec{grid-template-columns:repeat(2,1fr)}.spec span{font-size:.8rem;padding:.8rem .5rem}}

/* ---------- sezioni ---------- */
.sez{padding:clamp(4rem,9vw,8rem) var(--pad)}
.sez>*{max-width:var(--max);margin-left:auto;margin-right:auto}
.sez__testa{display:grid;gap:1.25rem;margin-bottom:clamp(2rem,5vw,4rem)}
.sez__testa p{font-size:1.15rem;color:inherit}
@media (min-width:900px){.sez__testa{grid-template-columns:1.1fr .9fr;align-items:end;gap:3rem}}
.sez--bianca{background:var(--bianco)}
.sez--giallo{background:var(--giallo)}
.sez--ciano{background:var(--ciano)}
.sez--magenta{background:var(--magenta);color:#fff}
.sez--magenta .sez__testa p,.sez--magenta p{color:#fff}

/* supporti */
.supporti{display:grid;gap:1.5rem}
@media (min-width:800px){.supporti{grid-template-columns:1fr 1fr}}
.supporto{position:relative;isolation:isolate;background:var(--carta);border:2px dashed var(--inchiostro);border-radius:22px;padding:2rem;padding-top:7rem;overflow:hidden}
.supporto ul{list-style:none;margin:1rem 0 0;padding:0}
.supporto li{padding:.6rem 0;border-top:1px solid var(--filetto)}
.pila{position:absolute;left:2rem;top:1.75rem;width:6.5rem;height:4.25rem}
.pila i{position:absolute;inset:0;border-radius:8px;border:1px solid var(--filetto);background:#fff;transition:transform .5s var(--uscita)}
.pila i:nth-child(1){transform:translate(0,0)}
.pila i:nth-child(2){transform:translate(.5rem,.45rem);background:var(--liner);z-index:-1}
.pila i:nth-child(3){transform:translate(1rem,.9rem);background:var(--filetto);z-index:-2}
.supporto--carta .pila i:nth-child(1){background:#fff}
.supporto--plastica .pila i:nth-child(1){background:rgb(0 171 228 / .16);border-color:var(--ciano)}
.supporto:hover .pila i:nth-child(2){transform:translate(.9rem,.8rem)}
.supporto:hover .pila i:nth-child(3){transform:translate(1.8rem,1.6rem)}

/* colori */
.macchina svg{width:100%;height:auto;border-radius:6px}
.nota{margin-top:.8rem;font:500 .8rem/1.3 "Red Hat Mono",monospace}
.cil-num{font:600 13px "Red Hat Mono",monospace;fill:var(--inchiostro)}

/* finiture */
.finiture{display:grid;gap:1.5rem}
@media (min-width:800px){.finiture{grid-template-columns:1fr 1fr;gap:2.5rem}}
.fin h3{margin:1.25rem 0 .5rem}
.fin__etichetta{position:relative;aspect-ratio:3/2;border-radius:12px;overflow:hidden;background:var(--ciano)}
.fin__etichetta::before{content:"";position:absolute;inset:14% 22%;border-radius:12px;background:#fff}
.fin__etichetta::after{content:"";position:absolute;left:50%;top:50%;width:30%;aspect-ratio:1;transform:translate(-30%,-50%);border-radius:50%;background:var(--magenta);mix-blend-mode:multiply}
.fin__etichetta>.foglio::before,.fin__etichetta>.lucido::before{content:none}
.fin__etichetta--oro,.fin__etichetta--uv{isolation:isolate}
.fin__etichetta--uv{background:var(--magenta)}
.fin__etichetta--oro{background:var(--ciano)}
.foglio{position:absolute;inset:14% 22%;border-radius:12px;border:6px solid transparent;z-index:2;
  --a:calc(var(--foil,0)*150% - 25%);
  background:linear-gradient(115deg,var(--oro) 0 var(--a),#E8C766 var(--a) calc(var(--a) + 9%),var(--oro) calc(var(--a) + 9%) 100%) border-box;
  -webkit-mask:linear-gradient(#000 0 0) padding-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;
  mask:linear-gradient(#000 0 0) padding-box exclude,linear-gradient(#000 0 0)}
.lucido{position:absolute;inset:0;z-index:2;--a:calc(var(--uv,0)*150% - 25%);background:linear-gradient(115deg,transparent 0 var(--a),rgb(255 255 255 / .8) var(--a) calc(var(--a) + 10%),transparent calc(var(--a) + 10%) 100%)}

/* tirature */
.tirature{display:grid;gap:2rem;align-items:stretch}
@media (min-width:800px){.tirature{grid-template-columns:1fr 1.25fr;gap:2rem}}
.tir{display:flex;flex-direction:column;justify-content:flex-end}
.tir{border:2px dashed var(--inchiostro);border-radius:22px;padding:clamp(1.25rem,3vw,2rem);position:relative}
.tir::before{content:"";position:absolute;left:-9px;top:50%;width:16px;height:16px;background:linear-gradient(var(--inchiostro),var(--inchiostro)) 7px 0/1px 16px no-repeat,linear-gradient(var(--inchiostro),var(--inchiostro)) 0 7px/16px 1px no-repeat}
.tir h3{margin:1.25rem 0 .6rem}
.tir p{color:var(--inchiostro)}
.bobina{overflow:visible}
.bobina--s{width:min(56%,11rem)}
.bobina--l{width:min(78%,19rem)}
.gira{transform-origin:100px 100px;transform-box:view-box;transition:transform 1.4s var(--uscita)}

/* progettazione */
.sez--duecol{display:grid;gap:2rem}
@media (min-width:900px){.sez--duecol{grid-template-columns:1fr 1fr;align-items:center;gap:4rem;max-width:none}.sez--duecol>*{margin:0}.sez--duecol .sez__testa{grid-template-columns:1fr;margin:0;max-width:34rem;justify-self:end}.sez--duecol .tavola{max-width:34rem}}
.tavola{position:relative}
.tavola .didascalia{position:absolute;right:.8rem;bottom:.6rem;margin:0}
.tavola svg{width:100%;height:auto;border-radius:10px}
.quota{font:500 11px "Red Hat Mono",monospace;fill:var(--inchiostro)}

/* chi siamo */
.sez--chi{display:grid;gap:2rem}
@media (min-width:900px){.sez--chi{grid-template-columns:1fr 1fr;align-items:center;gap:4.5rem}.sez--chi>*{margin:0}.chi__foto{justify-self:end;max-width:36rem;width:100%}}
.chi__foto{aspect-ratio:6/5;border-radius:12px;overflow:hidden;background:var(--liner)}
.chi__foto img{width:100%;height:100%;object-fit:cover;object-position:100% 60%}
.chi__testo{display:grid;gap:1.25rem;max-width:40rem}
.chi__testo h2{margin-bottom:.5rem}
.chi__testo p{font-size:1.15rem}

/* preventivo */
.prev{display:grid;gap:2.5rem}
@media (min-width:960px){.prev{grid-template-columns:.9fr 1.1fr;gap:4rem;align-items:start}}
.prev__testo{display:grid;gap:1.25rem;align-content:start}
.prev__testo p{font-size:1.15rem}
address{font-style:normal;font-size:1.1rem;line-height:1.7;margin-top:1rem}
address a{text-decoration-color:rgb(255 255 255 / .6)}
.modulo{background:#fff;color:var(--inchiostro);border-radius:14px;padding:clamp(1.25rem,3vw,2.25rem);display:grid;gap:1.1rem}
.modulo__riga{display:grid;gap:1.1rem}
@media (min-width:600px){.modulo__riga{grid-template-columns:1fr 1fr}}
.modulo label{display:grid;gap:.4rem;font-weight:600;font-stretch:90%;font-size:.92rem}
.modulo input:not([type=checkbox]),.modulo select,.modulo textarea{
  font:400 1rem/1.3 "Archivo",sans-serif;color:var(--inchiostro);background:var(--carta);
  border:1.5px solid var(--filetto);border-radius:6px;padding:.8rem .85rem;width:100%;caret-color:var(--magenta);
  transition:border-color .2s,background .2s;
}
.modulo input:hover,.modulo select:hover,.modulo textarea:hover{border-color:var(--inchiostro-2)}
.modulo input:focus,.modulo select:focus,.modulo textarea:focus{outline:none;border-color:var(--inchiostro);background:#fff;box-shadow:0 0 0 3px var(--giallo)}
.modulo input.errore{border-color:#B3002F;background:#FFF4F6}
.modulo .spunta{display:flex;gap:.7rem;align-items:flex-start;font-weight:400;font-size:.9rem;font-stretch:100%}
.modulo .spunta input{width:1.15rem;height:1.15rem;margin-top:.15rem;accent-color:var(--inchiostro)}
.modulo .btn{justify-self:start}
.modulo__esito{min-height:1.4em;font-size:.95rem;color:var(--inchiostro)}
.modulo__esito.errore{color:#B3002F}

/* piede */
.piede{display:flex;flex-wrap:wrap;gap:.5rem 2rem;padding:1.75rem var(--pad);background:var(--liner);font:500 .8rem/1.4 "Red Hat Mono",monospace;color:var(--inchiostro-2);border-top:1px solid var(--filetto)}

/* ---------- ingresso ---------- */
@media (prefers-reduced-motion:no-preference){
  .strato{animation:registro 1.6s var(--uscita) backwards}
  .strato--c{--x:-26px;--y:-18px}
  .strato--m{--x:30px;--y:-22px;animation-delay:.12s}
  .strato--y{--x:-12px;--y:30px;animation-delay:.24s}
  .strato--k{--x:20px;--y:24px;animation-delay:.36s}
  .strato--au{--x:-18px;--y:14px;animation-delay:.5s}
  .brillo{animation:brillo 2.4s 1.3s var(--uscita) both}
}
@keyframes registro{from{transform:translate(var(--x),var(--y)) rotate(2deg);opacity:0}to{transform:translate(0,0);opacity:1}}
@keyframes brillo{0%{opacity:0;transform:translateX(-60px)}40%{opacity:.7}100%{opacity:0;transform:translateX(120px)}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn{transition:none}
  .web__pista{transform:none!important}
}

@media (max-width:760px){
  .macchina{overflow:hidden}
  .macchina svg{width:800px;max-width:none;will-change:transform}
  .cil-num{font-size:26px}
}

.testata .corto{display:none}
@media (max-width:520px){.testata .lungo{display:none}.testata .corto{display:inline}.testata{gap:.75rem}.testata__logo img{height:38px}}
.segn{font-style:normal;font-size:.85em;opacity:.8;font-weight:500}
.piede .segn{font:500 .85rem/1.4 "Archivo",sans-serif;opacity:1;color:var(--inchiostro)}
.scorri{display:none}
@media (max-width:760px){.scorri{display:inline;font-weight:700}}

/* ---------- etichetta in apertura: si stampa di nuovo al passaggio ---------- */
.peel{transform-box:view-box;transform-origin:294px 374px;transform:scale(0);transition:transform .45s var(--uscita)}
.apertura__etichetta:hover .peel,.apertura__etichetta.tocco .peel{transform:scale(1)}
.apertura__etichetta{cursor:pointer}

/* ---------- mappa ---------- */
.mappa{display:block;position:relative;aspect-ratio:4/3;margin-top:1.5rem;border:2px solid var(--inchiostro);border-radius:14px;overflow:hidden;background:var(--liner);max-width:30rem}
.mappa__tessere{position:absolute;inset:0;display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(3,1fr)}
.mappa__tessere img{width:100%;height:100%;display:block;filter:saturate(.55)}
.mappa__segno{position:absolute;left:64.8%;top:47.1%;width:0;height:0}
.mappa__segno svg{position:absolute;left:-32px;top:-62px;overflow:visible;max-width:none}
.mappa__et{transform-box:fill-box;transform-origin:50% 100%}
.mappa__punto{position:absolute;left:-5px;top:-5px;width:10px;height:10px;border-radius:50%;background:var(--inchiostro);border:2px solid #fff}
.mappa__fonte{position:absolute;left:.5rem;bottom:.4rem;font:500 .7rem/1 "Red Hat Mono",monospace;background:rgb(255 255 255 / .85);padding:.25rem .4rem;border-radius:3px;color:var(--inchiostro)}
.mappa:hover .mappa__et,.mappa:focus-visible .mappa__et{animation:dondola .9s var(--uscita)}
@keyframes dondola{0%{transform:rotate(0)}25%{transform:rotate(-9deg)}55%{transform:rotate(6deg)}80%{transform:rotate(-3deg)}100%{transform:rotate(0)}}
@media (prefers-reduced-motion:reduce){.mappa:hover .mappa__et{animation:none}.peel{transition:none}}

/* ---------- rotoli che si srotolano al passaggio ---------- */
.tir{overflow:hidden;outline-offset:-6px}
.rotolo{display:flex;align-items:center;gap:0;min-width:0}
.rotolo .bobina{flex:none;transition:transform 1.4s var(--uscita);transform-origin:50% 50%}
.nastro{display:flex;align-items:center;gap:.5rem;flex:1;min-width:0;height:3.6rem;margin-left:-.4rem;padding-left:.4rem;
  background:linear-gradient(#EEF1F4,#EEF1F4) 0 50%/100% 100% no-repeat;border-top:1px solid var(--filetto);border-bottom:1px solid var(--filetto);
  clip-path:inset(0 100% 0 0);transition:clip-path 1.4s var(--uscita)}
.n-et{flex:none;position:relative;width:3.4rem;height:2.5rem;background:#fff;border:1px solid var(--filetto);border-radius:6px;overflow:hidden}
.n-et::before,.n-et::after{content:"";position:absolute;mix-blend-mode:multiply}
.n-et--1::before{left:.3rem;top:.3rem;width:1.5rem;height:1.5rem;border-radius:50%;background:var(--ciano)}
.n-et--1::after{left:1.1rem;top:.5rem;width:1.5rem;height:1.5rem;border-radius:50%;background:var(--magenta)}
.n-et--2{background:var(--giallo)}
.n-et--2::before{left:.4rem;bottom:.4rem;width:2.4rem;height:.3rem;background:var(--inchiostro);mix-blend-mode:normal}
.n-et--2::after{right:.4rem;top:.4rem;width:1rem;height:1rem;border-radius:50%;background:var(--magenta)}
.n-et--3::before{left:0;top:0;width:1.3rem;height:100%;background:var(--magenta)}
.n-et--3::after{right:.4rem;top:.5rem;width:1.5rem;height:1.5rem;border-radius:4px;background:var(--ciano)}
.n-et--4{background:var(--ciano)}
.n-et--4::before{left:.9rem;top:.35rem;width:1.7rem;height:1.7rem;border-radius:50%;background:var(--giallo)}
.n-et--4::after{left:1.5rem;top:.95rem;width:.6rem;height:.6rem;border-radius:50%;background:var(--inchiostro);mix-blend-mode:normal}
.nastro--l{--n:9}
.tir:hover .nastro,.tir:focus-visible .nastro,.tir.aperto .nastro{clip-path:inset(0 0 0 0)}
.tir:hover .gira,.tir:focus-visible .gira,.tir.aperto .gira{transform:rotate(-720deg)}
.tir:hover .bobina,.tir:focus-visible .bobina,.tir.aperto .bobina{transform:scale(.9)}
@media (prefers-reduced-motion:reduce){.nastro,.gira,.rotolo .bobina{transition:none}}

/* ---------- tasto «torna su» a forma di etichetta ---------- */
.su{position:fixed;right:max(1rem,env(safe-area-inset-right));bottom:max(1rem,env(safe-area-inset-bottom));z-index:55;
  width:52px;height:44px;padding:0;border:2px solid var(--inchiostro);border-radius:12px;background:#fff;color:var(--inchiostro);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .3s var(--uscita),transform .3s var(--uscita)}
.su.vista{opacity:1;transform:none;pointer-events:auto}
.su__giro{position:absolute;left:-2px;top:-2px;pointer-events:none;overflow:visible;max-width:none}
.su__freccia{position:relative;flex:none;transition:transform .25s var(--uscita)}
.su:focus-visible .su__freccia{transform:translateY(-3px)}
@media (hover:hover){.su:hover .su__freccia{transform:translateY(-3px)}.su:hover{background:var(--giallo)}}
@media (prefers-reduced-motion:reduce){.su,.su__freccia{transition:none}}

.su::after{content:attr(data-nome);position:absolute;right:calc(100% + .6rem);top:50%;transform:translate(8px,-50%);white-space:nowrap;
  font:600 .78rem/1 "Red Hat Mono",monospace;background:var(--inchiostro);color:#fff;padding:.5rem .65rem;border-radius:6px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s var(--uscita)}
@media (hover:hover){.su:hover::after{opacity:1;transform:translate(0,-50%)}}
.su:focus-visible::after{opacity:1;transform:translate(0,-50%)}
@media (prefers-reduced-motion:reduce){.su::after{transition:none}}