:root{
    --blu:#14243B; --antracite:#1F2328; --acciaio:#5B6670; --chiaro:#E9ECEF;
    --testo:#1F2328; --arancio:#E8601C; --arancio-scuro:#C94F12; --bianco:#F7F6F3;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  body{font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;color:var(--testo);background:var(--chiaro);line-height:1.6}
  a{color:inherit}
  .contenitore{max-width:1120px;margin:0 auto;padding:0 20px}

  /* Menu */
  header{position:sticky;top:0;z-index:10;background:rgba(20,36,59,.96);color:var(--bianco);backdrop-filter:blur(6px)}
  header .contenitore{display:flex;align-items:center;justify-content:space-between;height:88px;gap:16px}
  .marchio{display:flex;align-items:center;gap:14px;text-decoration:none;font-weight:800;letter-spacing:.4px;font-size:1.2rem}
  .marchio img{width:68px;height:68px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.45))}
  /* Scritta artistica "MetalPro Service": acciaio lucido + firma incandescente */
  .logotipo{display:inline-flex;align-items:baseline;gap:.35em;margin-bottom:14px;line-height:1}
  .logotipo .metal{font-family:"Segoe UI Black","Arial Black",system-ui,sans-serif;font-weight:900;font-size:clamp(1.6rem,3.2vw,2.4rem);
    letter-spacing:.06em;text-transform:uppercase;
    background:linear-gradient(180deg,#FFFFFF 0%,#C9D2DB 38%,#7D8A96 52%,#E9ECEF 70%,#9AA6B2 100%);
    -webkit-background-clip:text;background-clip:text;color:transparent;
    filter:drop-shadow(0 2px 3px rgba(0,0,0,.55))}
  .logotipo .service{font-family:"Segoe Script","Brush Script MT","Lucida Handwriting",cursive;font-size:clamp(1.8rem,3.6vw,2.7rem);
    color:var(--arancio);text-shadow:0 0 14px rgba(232,96,28,.55),0 0 2px rgba(255,180,120,.9);transform:rotate(-4deg);display:inline-block}
  nav ul{display:flex;gap:22px;list-style:none;align-items:center}
  nav a{text-decoration:none;font-size:.95rem;opacity:.9}
  nav a:hover{opacity:1;color:#fff}
  .tendina{position:relative}
  .tendina ul{display:none;position:absolute;top:28px;left:-12px;background:var(--antracite);padding:10px 0;min-width:300px;flex-direction:column;gap:0;border-radius:6px;box-shadow:0 10px 30px rgba(0,0,0,.3)}
  .tendina:hover ul,.tendina:focus-within ul{display:flex}
  .tendina ul a{display:block;padding:8px 18px}
  .tendina ul a:hover{background:var(--blu)}
  .bottone{display:inline-block;background:var(--arancio);color:#fff;text-decoration:none;font-weight:700;padding:12px 22px;border-radius:6px;transition:background .2s,transform .2s;border:0}
  .bottone:hover{background:var(--arancio-scuro);transform:translateY(-1px)}
  .menu-mobile{display:none}

  /* Apertura */
  .apertura{position:relative;min-height:88vh;display:flex;align-items:center;color:var(--bianco);overflow:hidden;background:var(--blu)}
  .apertura>.contenitore{position:relative;z-index:2;width:100%}
  /* Prisma a tre facce: ruota di 120 gradi per mostrare una foto alla volta */
  .scena{position:absolute;inset:0;perspective:2400px;z-index:0}
  .prisma{position:absolute;inset:0;transform-style:preserve-3d;transition:transform 1.6s cubic-bezier(.65,0,.35,1)}
  .faccia{position:absolute;inset:0;background-size:cover;background-position:center;backface-visibility:hidden}
  .velo{position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(20,36,59,.92) 0%,rgba(20,36,59,.70) 45%,rgba(20,36,59,.10) 100%)}
  @media (prefers-reduced-motion:reduce){.prisma{transition:none}}
  .apertura h1{font-size:clamp(2.2rem,5vw,3.8rem);line-height:1.1;max-width:640px}
  .apertura p.sotto{font-size:clamp(1.05rem,2vw,1.35rem);max-width:560px;margin:18px 0 30px;color:#DCE2E8}
  .apertura .campione{display:block;margin-top:14px;font-size:.95rem;color:#C9D2DB}
  .apertura .campione a{color:#fff}

  section{padding:80px 0}
  h2{font-size:clamp(1.6rem,3vw,2.3rem);line-height:1.2;margin-bottom:14px;color:var(--blu)}
  .occhiello{text-transform:uppercase;letter-spacing:2px;font-size:.8rem;color:var(--arancio);font-weight:700;margin-bottom:8px}

  .fatto{background:var(--antracite);color:var(--bianco);padding:56px 0}
  .fatto p{font-size:1.25rem;max-width:820px}

  /* Come funziona */
  .passi{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
  .passo{background:#fff;border-radius:8px;padding:28px;border-top:4px solid var(--blu)}
  .passo .num{font-size:2.4rem;font-weight:800;color:var(--arancio);line-height:1}
  .passo h3{margin:10px 0 6px;color:var(--blu)}

  /* Perché */
  .perche{background:var(--blu);color:var(--bianco)}
  .perche h2{color:#fff}
  .perche-griglia{display:grid;grid-template-columns:5fr 6fr;gap:44px;align-items:center}
  .perche figure{margin:0;border-radius:10px;overflow:hidden;box-shadow:0 18px 40px rgba(0,0,0,.4);border:3px solid rgba(232,96,28,.85)}
  .perche figure img{display:block;width:100%;height:auto}
  .perche figcaption{background:var(--antracite);color:#C9D2DB;font-size:.9rem;padding:10px 14px}
  .perche .tre{grid-template-columns:1fr;gap:18px}
  .tre{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:30px}
  .tre h3{color:#fff;margin-bottom:6px}
  .tre p{color:#C9D2DB}

  /* Servizi */
  .servizi-griglia{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:34px}
  .scheda{display:block;text-decoration:none;background:#fff;border-radius:8px;padding:26px;border:1px solid #D5DBE1;transition:transform .2s,box-shadow .2s,border-color .2s}
  .scheda:hover{transform:translateY(-5px);box-shadow:0 14px 30px rgba(20,36,59,.15);border-color:var(--blu)}
  .scheda .icona{width:44px;height:44px;border-radius:8px;background:var(--blu);display:grid;place-items:center;color:#fff;font-size:1.3rem;margin-bottom:14px}
  .scheda h3{color:var(--blu);margin-bottom:6px}
  .scheda .vai{display:inline-block;margin-top:10px;font-weight:700;color:var(--blu)}
  .scheda:hover .vai{color:var(--arancio)}

  /* Rete */
  .rete{background:var(--antracite);color:var(--bianco)}
  .rete h2{color:#fff}
  .due{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:26px}
  .due div{border:1px solid #3A4048;border-radius:8px;padding:26px}
  .due h3{color:#fff;margin-bottom:6px}
  .due p{color:#C9D2DB;margin-bottom:14px}
  .bottone-chiaro{display:inline-block;border:2px solid #fff;color:#fff;text-decoration:none;padding:9px 18px;border-radius:6px;font-weight:700}
  .bottone-chiaro:hover{background:#fff;color:var(--antracite)}

  /* Moduli "Entra nella squadra" */
  .intro-rete{color:#C9D2DB;max-width:720px;margin-bottom:22px}
  .schede-rete{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:0}
  .scheda-rete{background:transparent;color:#C9D2DB;border:1px solid #3A4048;border-bottom:none;border-radius:8px 8px 0 0;padding:12px 20px;font-size:1rem;font-weight:700;cursor:pointer}
  .scheda-rete.attiva{background:#2A3038;color:#fff;border-color:var(--arancio)}
  .modulo{display:none;background:#2A3038;border:1px solid #3A4048;border-radius:0 8px 8px 8px;padding:28px}
  .modulo.attivo{display:block}
  .vantaggio{color:#fff;font-size:1.1rem;margin-bottom:18px}
  .campi{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px;margin-bottom:16px}
  .campi label{display:flex;flex-direction:column;gap:6px;font-size:.9rem;color:#C9D2DB}
  .campi .largo{grid-column:1/-1}
  .campi input,.campi textarea{background:#1F2328;border:1px solid #4A525C;border-radius:6px;color:#fff;padding:10px 12px;font:inherit}
  .campi input:focus,.campi textarea:focus{outline:2px solid var(--arancio);border-color:transparent}
  .consenso{display:flex;gap:10px;align-items:flex-start;color:#C9D2DB;font-size:.9rem;margin-bottom:18px}
  /* Chiusura */
  .chiusura{text-align:center}
  .chiusura h2{font-size:clamp(1.8rem,3.5vw,2.6rem)}
  .chiusura p{margin:10px 0 26px;color:var(--acciaio)}

  footer{background:var(--blu);color:#AEB8C2;font-size:.85rem;padding:30px 0}
  footer .contenitore{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

  @media (max-width:860px){
    nav ul{display:none}
    .menu-mobile{display:inline-block}
    .passi,.tre,.servizi-griglia,.due,.perche-griglia,.campi{grid-template-columns:1fr}
    .velo{background:linear-gradient(180deg,rgba(20,36,59,.85),rgba(20,36,59,.75))}
    section{padding:56px 0}
  }

  /* Pagine dei servizi */
  .testata-servizio{position:relative;min-height:46vh;display:flex;align-items:flex-end;color:#fff;background-size:cover;background-position:center}
  .testata-servizio::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,36,59,.94),rgba(20,36,59,.55))}
  .testata-servizio .contenitore{position:relative;padding:60px 20px}
  .testata-servizio h1{font-size:clamp(2rem,4.5vw,3.2rem);line-height:1.1}
  .testata-servizio p{font-size:1.2rem;color:#DCE2E8;max-width:640px;margin-top:12px}
  .briciole{font-size:.85rem;color:#C9D2DB;margin-bottom:12px}
  .briciole a{color:#fff}
  .serve{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:20px;list-style:none}
  .serve li{background:#fff;border-left:4px solid var(--arancio);border-radius:6px;padding:14px 18px}
  details{background:#fff;border:1px solid #D5DBE1;border-radius:8px;margin-top:12px}
  summary{cursor:pointer;padding:16px 20px;font-weight:700;color:var(--blu);list-style:none}
  summary::after{content:"+";float:right;color:var(--arancio);font-size:1.3rem;line-height:1}
  details[open] summary::after{content:"–"}
  details p{padding:0 20px 18px}
  .altri{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
  .altri a{background:#fff;border:1px solid #D5DBE1;border-radius:20px;padding:8px 16px;text-decoration:none;color:var(--blu);font-weight:600}
  .altri a:hover{border-color:var(--arancio)}
  @media (max-width:860px){.serve{grid-template-columns:1fr}}

  /* Pulsante musica: sempre visibile in basso a destra */
  .tasto-musica{position:fixed;right:18px;bottom:18px;z-index:50;display:flex;align-items:center;gap:8px;
    background:var(--arancio);color:#fff;border:2px solid #fff;border-radius:30px;padding:12px 18px;
    font:700 .95rem "Segoe UI",system-ui,sans-serif;cursor:pointer;box-shadow:0 8px 24px rgba(0,0,0,.35)}
  .tasto-musica:hover{background:var(--arancio-scuro)}
  .tasto-musica .icona{font-size:1.25rem}
  .tasto-musica .corto{display:none}

  /* Menu per telefono */
  .apri-menu{display:none;flex-direction:column;justify-content:center;gap:5px;width:46px;height:46px;background:transparent;border:2px solid rgba(255,255,255,.5);border-radius:8px;cursor:pointer;padding:0 10px}
  .apri-menu span{display:block;height:3px;background:#fff;border-radius:2px}
  @media (max-width:860px){
    header .contenitore{height:72px}
    .marchio img{width:48px;height:48px}
    .marchio{font-size:1rem}
    header .bottone{display:none}
    .tasto-musica .lungo{display:none}
    .tasto-musica .corto{display:inline}
    .apri-menu{display:flex;order:3}
    nav{position:absolute;top:72px;left:0;right:0;background:var(--blu);display:none;border-top:1px solid #2E3A4D}
    nav.aperto{display:block}
    nav.aperto ul{display:flex;flex-direction:column;align-items:stretch;gap:0;padding:8px 0}
    nav.aperto ul a{display:block;padding:14px 20px;font-size:1.05rem}
    nav.aperto .tendina ul{display:flex;position:static;box-shadow:none;background:#0F1C2E;min-width:0;padding:0}
    nav.aperto .tendina ul a{padding:10px 36px;font-size:.95rem}
    .tasto-musica{right:10px;bottom:10px;padding:9px 13px;font-size:.8rem}
  }

  /* Selettore della lingua */
  .lingue{display:flex;gap:2px;border:1px solid rgba(255,255,255,.35);border-radius:6px;overflow:hidden;margin-left:auto;margin-right:14px}
  .lingue a{padding:6px 10px;font-size:.85rem;font-weight:700;text-decoration:none;color:#C9D2DB}
  .lingue a[aria-current]{background:var(--arancio);color:#fff}
  @media (max-width:860px){.lingue{margin-right:8px}}

  /* Per chi lavoriamo */
  .per-chi{background:#fff}
  .tre-clienti{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:26px}
  .tre-clienti div{border:1px solid #D5DBE1;border-top:4px solid var(--arancio);border-radius:8px;padding:24px}
  .tre-clienti h3{color:var(--blu);margin-bottom:6px}
  .nota-clienti{margin-top:22px;color:var(--acciaio)}
  .campi select{background:#1F2328;border:1px solid #4A525C;border-radius:6px;color:#fff;padding:10px 12px;font:inherit}
  @media (max-width:860px){.tre-clienti{grid-template-columns:1fr}}

/* Nuova home "costruiamo qualsiasi cosa" (11/11/2026) */
.video-apertura{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
/* Vetrina interattiva materiali e tecniche (titolare 11/11/2026: "il sito deve essere interattivo") */
.cosa .guida-vetrina{color:var(--acciaio);margin-bottom:22px}
.vetrina-griglia{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:34px;align-items:start}
.cosa .etichetta{text-transform:uppercase;letter-spacing:2px;font-size:.75rem;font-weight:700;color:var(--acciaio);margin:0 0 10px}
.cosa .materiali{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 26px}
.cosa .materiali button{padding:8px 16px;border-radius:999px;background:var(--blu);color:#fff;font:inherit;font-weight:600;font-size:.95rem;border:2px solid var(--blu);cursor:pointer;transition:background .2s,border-color .2s,transform .2s}
.cosa .materiali button:hover,.cosa .materiali button.attiva{background:var(--arancio);border-color:var(--arancio);transform:translateY(-2px)}
.cosa .tecniche{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.cosa .tecniche button{text-align:left;font:inherit;background:#fff;border:1px solid #D5DBE1;border-left:4px solid var(--blu);border-radius:8px;padding:14px 16px;cursor:pointer;color:var(--testo);transition:border-color .2s,box-shadow .2s,transform .2s}
.cosa .tecniche button strong{display:block;color:var(--blu);margin-bottom:2px}
.cosa .tecniche button span{font-size:.9rem;color:var(--acciaio)}
.cosa .tecniche button:hover,.cosa .tecniche button.attiva{border-left-color:var(--arancio);box-shadow:0 10px 24px rgba(20,36,59,.12);transform:translateY(-2px)}
.cosa button:focus-visible{outline:3px solid var(--arancio);outline-offset:2px}
.vetrina{position:sticky;top:96px;margin:0;border-radius:10px;overflow:hidden;aspect-ratio:4/3;background:var(--blu);box-shadow:0 18px 40px rgba(20,36,59,.25)}
.vetrina .strato{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transform:scale(1.04);transition:opacity .5s ease,transform 4s ease}
.vetrina .strato.visibile{opacity:1;transform:scale(1)}
.vetrina figcaption{position:absolute;left:0;right:0;bottom:0;padding:40px 22px 18px;color:#fff;background:linear-gradient(180deg,rgba(20,36,59,0),rgba(20,36,59,.92))}
.vetrina figcaption strong{display:block;font-size:1.3rem;color:#fff}
.vetrina figcaption span{color:#DCE2E8}
@media (max-width:860px){
  .vetrina-griglia{grid-template-columns:1fr;gap:20px}
  .vetrina{position:relative;top:auto;order:-1}
  .cosa .tecniche{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){.vetrina .strato{transition:opacity .2s}}
/* Schede dei servizi: al passaggio del cursore compare la foto del servizio */
.scheda.con-foto{position:relative;overflow:hidden}
.scheda.con-foto>*{position:relative;z-index:1}
.scheda.con-foto>.foto{position:absolute;inset:0;z-index:0;background-size:cover;background-position:center;opacity:0;transform:scale(1.08);transition:opacity .35s ease,transform .6s ease}
.scheda.con-foto>.foto::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,36,59,.30) 0%,rgba(20,36,59,.62) 45%,rgba(20,36,59,.9) 100%)}
.scheda.con-foto:hover>.foto,.scheda.con-foto:focus-visible>.foto{opacity:1;transform:scale(1)}
.scheda.con-foto h3,.scheda.con-foto p{transition:color .3s}
.scheda.con-foto:hover h3,.scheda.con-foto:hover p,.scheda.con-foto:focus-visible h3,.scheda.con-foto:focus-visible p{color:#fff}
.scheda.con-foto:hover .icona{background:var(--arancio)}
.scheda.con-foto:hover h3,.scheda.con-foto:hover p,.scheda.con-foto:focus-visible h3,.scheda.con-foto:focus-visible p{text-shadow:0 1px 6px rgba(0,0,0,.7)}
.idea{background:#EEF2F6}
.idea .modulo{display:block}
.idea .intro-rete{color:#33414F;max-width:720px}

/* Modelli 3D in movimento (titolare 11/11/2026) */
.progetto-3d{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:34px;align-items:center;margin-top:40px;background:var(--blu);color:#fff;border-radius:12px;padding:30px;box-shadow:0 18px 40px rgba(20,36,59,.25)}
.progetto-3d .etichetta{text-transform:uppercase;letter-spacing:2px;font-size:.75rem;font-weight:700;color:var(--arancio);margin-bottom:8px}
.progetto-3d h3{color:#fff;font-size:1.5rem;line-height:1.25;margin-bottom:10px}
.progetto-3d .testo-3d>p{color:#C9D2DB}
.scelta-3d,.vista-3d{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.scelta-3d button,.vista-3d button{font:inherit;font-weight:600;font-size:.9rem;padding:7px 14px;border-radius:999px;border:2px solid #3A5373;background:transparent;color:#fff;cursor:pointer;transition:background .2s,border-color .2s}
.scelta-3d button:hover,.scelta-3d button.attiva,.vista-3d button:hover,.vista-3d button.attiva{background:var(--arancio);border-color:var(--arancio)}
.progetto-3d button:focus-visible{outline:3px solid #fff;outline-offset:2px}
.didascalia-3d{margin-top:14px;color:#C9D2DB;font-size:.95rem;min-height:1.5em}
.tela-3d{position:relative;aspect-ratio:4/3;border-radius:10px;overflow:hidden;background:radial-gradient(circle at 50% 40%,#24406a,#0d1828);cursor:grab}
.tela-3d.preso{cursor:grabbing}
.tela-3d canvas{width:100%;height:100%;display:block}
.tela-3d .suggerimento{position:absolute;right:12px;bottom:10px;font-size:.8rem;color:#AEB8C2;pointer-events:none}
.tela-3d .senza-3d{position:absolute;inset:0;display:grid;place-items:center;color:#C9D2DB;padding:20px;text-align:center}
.tela-3d .senza-3d[hidden]{display:none}
@media (max-width:860px){.progetto-3d{grid-template-columns:1fr;padding:20px}}

/* Esito dell invio dei moduli */
.modulo .esito{margin:14px 0 0;font-weight:600}
.modulo .esito.ok{color:#2E9E5B}

/* Frase del marchio sotto il logo (titolare, 12/11/2026) */
.apertura .payoff{margin:-2px 0 20px;font-size:clamp(.95rem,1.7vw,1.2rem);font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:#C9D2DB}
.apertura .payoff::before{content:"";display:inline-block;width:30px;height:2px;margin-right:12px;vertical-align:middle;background:var(--arancio)}