/* D-PIPING SRL — dpiping.com
   Direzione visiva: "scheda tecnica". Alluminio chiaro, inchiostro, blu oltremare. */

@font-face{font-family:"IDisplay";src:url("../fonts/InterDisplay-ExtraBold.woff") format("woff");font-weight:800;font-style:normal;font-display:swap}
@font-face{font-family:"IDisplay";src:url("../fonts/InterDisplay-Medium.woff") format("woff");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"IText";src:url("../fonts/Inter-Regular.woff") format("woff");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"IText";src:url("../fonts/Inter-SemiBold.woff") format("woff");font-weight:600;font-style:normal;font-display:swap}

:root{
  --ink:#0b1020;
  --ink-2:#1b2236;
  --paper:#eceff4;
  --white:#ffffff;
  --blue:#2332ff;
  --blue-deep:#1620b8;
  --mist:#d9dffb;
  --amber:#ffb020;
  --muted:#4d556b;
  --line:rgba(11,16,32,.14);
  --display:"IDisplay","Inter Display","Helvetica Neue",Arial,sans-serif;
  --text:"IText","Inter","Helvetica Neue",Arial,sans-serif;
  --wrap:1240px;
  --gutter:clamp(1.1rem,4vw,2.5rem);
  --header-h:72px;
  color-scheme:light;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--text);font-size:1.0625rem;line-height:1.62;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
a{color:inherit}
p{margin:0 0 1em}
h1,h2,h3,h4{font-family:var(--display);font-weight:800;line-height:1.02;letter-spacing:-.03em;margin:0 0 .5em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:.7rem 1rem;z-index:100}
.skip:focus{left:0}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.lead{font-size:clamp(1.12rem,1.6vw,1.3rem);line-height:1.55;color:var(--ink-2);max-width:36rem}
.prose p{max-width:62ch}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(236,239,244,.86);-webkit-backdrop-filter:saturate(1.4) blur(14px);backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid transparent;transition:border-color .2s}
.site-header.is-stuck{border-bottom-color:var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:1.5rem}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;font-family:var(--display);font-weight:800;font-size:1.25rem;letter-spacing:.01em}
.brand img{height:54px;width:auto}
.site-footer .brand img{height:66px}
.nav{display:flex;align-items:center;gap:.4rem}
.nav a{position:relative;text-decoration:none;font-weight:600;font-size:.97rem;padding:.55rem .85rem}
.nav a:not(.btn)::after{content:"";position:absolute;left:.85rem;right:.85rem;bottom:.2rem;height:2px;background:var(--blue);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.nav a:not(.btn):hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
.nav .btn{margin-left:.6rem;padding:.65rem 1.1rem;font-size:.95rem}
.menu-btn{display:none;width:46px;height:46px;border:1.5px solid var(--ink);background:transparent;border-radius:50%;cursor:pointer;align-items:center;justify-content:center;padding:0}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:transform .25s,background .2s}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0}
.menu-btn span::before{top:-6px}.menu-btn span::after{top:6px}
.menu-btn[aria-expanded="true"] span{background:transparent}
.menu-btn[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.6rem;font:600 1rem/1 var(--text);padding:1.05rem 1.6rem;border-radius:999px;border:1.5px solid transparent;text-decoration:none;cursor:pointer;transition:background .2s,color .2s,border-color .2s,transform .2s}
.btn-ghost,.btn-light{color:var(--ink)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--ink)}
.btn-ghost{border-color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--ink);color:#fff}
.btn:active{transform:translateY(1px)}

/* ---------- Hero ---------- */
.hero{padding-block:clamp(2.5rem,7vw,5.5rem) clamp(2rem,5vw,3.5rem)}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(1.5rem,4vw,4rem);align-items:center}
.hero h1{font-size:clamp(2.7rem,7.2vw,6.1rem);line-height:.94;letter-spacing:-.045em;margin-bottom:.4em}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero .lead{margin-bottom:2rem}
.actions{display:flex;flex-wrap:wrap;gap:.8rem}
.pcb{background:var(--ink);border-radius:28px;padding:clamp(.5rem,1.5vw,1rem);position:relative;overflow:hidden;aspect-ratio:8/7}
.pcb svg{width:100%;height:100%}
.pcb .grid-line{stroke:rgba(217,223,251,.07);stroke-width:1}
.pcb .trace{fill:none;stroke:#6f7cff;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1;animation:draw 1.6s cubic-bezier(.6,.05,.2,1) forwards;animation-delay:var(--d,0s)}
.pcb .trace.alt{stroke:var(--mist);stroke-width:1.6}
.pcb .via{fill:var(--ink);stroke:#6f7cff;stroke-width:2}
.pcb .chip-body{fill:#151c33;stroke:#3a47c9;stroke-width:1.5}
.pcb .chip-text{fill:var(--mist);font-family:var(--display);font-weight:800}
.pcb .pulse{fill:var(--amber)}
.pcb .pulse.b{fill:#fff}
@keyframes draw{to{stroke-dashoffset:0}}
.hero-note{position:absolute;left:clamp(.9rem,2.4vw,1.6rem);bottom:clamp(.8rem,2vw,1.3rem);right:1rem;display:flex;align-items:center;gap:.6rem;color:var(--mist);font-size:.82rem}
.led{width:9px;height:9px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 4px rgba(255,176,32,.2)}

.facts{display:grid;grid-template-columns:repeat(4,1fr);margin-top:clamp(2rem,5vw,3.5rem);border-top:1.5px solid var(--ink)}
.facts li{padding:1.2rem 1.2rem 0 0}
.facts li+li{padding-left:1.2rem;border-left:1px solid var(--line)}
.facts strong{display:block;font-family:var(--display);font-size:clamp(1.25rem,2.2vw,1.75rem);letter-spacing:-.02em;line-height:1.1}
.facts span{display:block;color:var(--muted);font-size:.95rem;margin-top:.3rem}

/* ---------- Sections ---------- */
.section{padding-block:clamp(3.5rem,8vw,6.5rem)}
.section.tight{padding-block:clamp(2.5rem,5vw,4rem)}
.sec-head{display:grid;grid-template-columns:1.1fr .9fr;gap:2rem;align-items:end;margin-bottom:clamp(2rem,4vw,3.2rem)}
.sec-head h2{font-size:clamp(2.1rem,4.8vw,3.9rem);margin:0}
.sec-head p{margin:0;color:var(--ink-2);max-width:34rem}

/* bento */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.tile{position:relative;background:var(--white);border:1px solid var(--line);border-radius:6px;padding:1.5rem;min-height:210px;display:flex;flex-direction:column;justify-content:space-between;text-decoration:none;transition:border-color .2s,transform .25s}
.tile:hover{border-color:var(--blue);transform:translateY(-3px)}
.tile .ico{width:46px;height:46px;stroke:var(--blue);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tile h3{font-size:1.35rem;margin:1.6rem 0 .35rem;letter-spacing:-.02em}
.tile p{margin:0;color:var(--muted);font-size:.97rem}
.tile.feature{grid-column:span 3;grid-row:span 2;background:var(--blue);color:#fff;border-color:var(--blue);border-radius:28px;padding:2rem}
.tile.feature .ico{stroke:#fff;width:64px;height:64px}
.tile.feature h3{font-size:clamp(1.9rem,3.2vw,2.8rem);line-height:1}
.tile.feature p{color:#dfe3ff;font-size:1.05rem;max-width:26rem}
.tile.feature:hover{background:var(--blue-deep);border-color:var(--blue-deep)}
.tile.s3{grid-column:span 3}
.tile.s2{grid-column:span 2}
.tile.dark{background:var(--ink);color:#fff;border-color:var(--ink)}
.tile.dark p{color:#b9c0d8}.tile.dark .ico{stroke:#8f99ff}

/* why */
.why{display:grid;grid-template-columns:repeat(3,1fr);border-top:1.5px solid var(--ink)}
.why article{padding:1.8rem 1.8rem 0 0}
.why article+article{padding-left:1.8rem;border-left:1px solid var(--line)}
.why h3{font-size:clamp(1.5rem,2.4vw,2rem);letter-spacing:-.03em}
.why p{color:var(--ink-2);max-width:30rem}

/* process (sequenza reale → numeri) */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:st}
.steps li{counter-increment:st;position:relative;background:var(--ink);color:#fff;border-radius:6px;padding:1.5rem 1.4rem 1.7rem;min-height:230px}
.steps li::before{content:counter(st);display:block;font-family:var(--display);font-weight:800;font-size:3.6rem;line-height:1;color:#6f7cff;margin-bottom:2.2rem;letter-spacing:-.05em}
.steps h3{font-size:1.25rem;margin-bottom:.4rem;letter-spacing:-.02em}
.steps p{margin:0;color:#b9c0d8;font-size:.97rem}

/* CTA band */
.cta-band{background:var(--blue);color:#fff;border-radius:28px;padding:clamp(2rem,6vw,4.5rem);display:grid;grid-template-columns:1.3fr .7fr;gap:2rem;align-items:center;position:relative;overflow:hidden}
.cta-band h2{font-size:clamp(2.1rem,5vw,4.2rem);margin:0;letter-spacing:-.04em}
.cta-band p{margin:0 0 1.4rem;color:#e0e4ff}
.cta-band::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border:2px solid rgba(255,255,255,.25);border-radius:50%;box-shadow:0 0 0 38px rgba(255,255,255,.06),0 0 0 76px rgba(255,255,255,.04);pointer-events:none}
.cta-band>*{position:relative;z-index:1}

/* ---------- Inner page hero ---------- */
.page-hero{padding-block:clamp(2.5rem,7vw,5rem) clamp(1.5rem,4vw,2.5rem);border-bottom:1.5px solid var(--ink)}
.page-hero h1{font-size:clamp(2.5rem,6.6vw,5.4rem);letter-spacing:-.045em;line-height:.96;max-width:15ch;margin-bottom:.45em}
.page-hero .lead{margin:0}
.crumbs{font-size:.92rem;color:var(--muted);margin-bottom:1.4rem}
.crumbs a{text-decoration:none;border-bottom:1px solid var(--line)}

/* ---------- Products ---------- */
.chips{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:2rem}
.chip{font:600 .95rem/1 var(--text);color:var(--ink);padding:.8rem 1.1rem;border-radius:999px;border:1.5px solid var(--ink);background:transparent;cursor:pointer;transition:background .2s,color .2s}
.chip:hover{background:var(--mist)}
.chip[aria-pressed="true"]{background:var(--ink);color:#fff}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(285px,1fr));gap:14px}
.card{background:var(--white);border:1px solid var(--line);border-radius:6px;padding:1.6rem;display:flex;flex-direction:column}
.card[hidden]{display:none}
.card .ico{width:44px;height:44px;stroke:var(--blue);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:1.4rem;margin:1.3rem 0 .6rem;letter-spacing:-.025em}
.card ul{margin:0 0 1.4rem;color:var(--muted);font-size:.97rem}
.card li{padding:.38rem 0;border-top:1px solid var(--line)}
.card .more{margin-top:auto;font-weight:600;text-decoration:none;border-bottom:2px solid var(--blue);align-self:flex-start;padding-bottom:2px}
.card .more:hover{color:var(--blue)}
.note-strip{margin-top:2rem;background:var(--mist);border-radius:6px;padding:1.2rem 1.4rem;display:flex;gap:1rem;align-items:center;justify-content:space-between;flex-wrap:wrap}
.note-strip p{margin:0;font-weight:600}

/* ---------- Services ---------- */
.svc{border-top:1px solid var(--line)}
.svc:last-child{border-bottom:1px solid var(--line)}
.svc-row{display:grid;grid-template-columns:.9fr 1.1fr;gap:2rem;padding-block:2rem}
.svc-row h3{font-size:clamp(1.5rem,2.6vw,2.2rem);margin:0;letter-spacing:-.03em}
.svc-row p{margin:0;color:var(--ink-2);max-width:52ch}
.who{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.who div{background:var(--ink);color:#fff;border-radius:6px;padding:1.6rem;min-height:170px;display:flex;flex-direction:column;justify-content:flex-end}
.who div:nth-child(2){background:var(--blue)}
.who div:nth-child(3){background:var(--white);color:var(--ink);border:1px solid var(--line)}
.who h3{font-size:1.5rem;margin:0 0 .3rem;letter-spacing:-.025em}
.who p{margin:0;font-size:.97rem;opacity:.85}
.faq details{border-top:1px solid var(--line);padding:1.2rem 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-family:var(--display);font-weight:800;font-size:1.2rem;letter-spacing:-.02em;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.7rem;line-height:1;color:var(--blue);transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:.8rem 0 0;color:var(--ink-2);max-width:62ch}

/* ---------- Company ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.5rem,4vw,4rem);align-items:start}
.timeline{border-left:2px solid var(--ink);margin-left:.4rem}
.timeline li{position:relative;padding:0 0 1.9rem 1.8rem}
.timeline li::before{content:"";position:absolute;left:-7px;top:.5em;width:12px;height:12px;border-radius:50%;background:var(--paper);border:2px solid var(--blue)}
.timeline time{display:block;font-family:var(--display);font-weight:800;font-size:1.35rem;letter-spacing:-.02em}
.timeline p{margin:.15rem 0 0;color:var(--ink-2)}
.dl{background:var(--white);border:1px solid var(--line);border-radius:6px;padding:1.6rem}
.dl h3{font-size:1.4rem;margin-bottom:1rem}
.dl dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:.55rem 1.4rem;font-size:.97rem}
.dl dt{color:var(--muted)}
.dl dd{margin:0;font-weight:600;overflow-wrap:anywhere}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:clamp(1.5rem,4vw,4rem);align-items:start}
.form{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{display:flex;flex-direction:column;gap:.4rem}
.field.full{grid-column:1/-1}
.field label{font-weight:600;font-size:.95rem}
.field input,.field select,.field textarea{font:inherit;color:var(--ink);background:var(--white);border:1.5px solid var(--line);border-radius:6px;padding:.85rem 1rem;width:100%;transition:border-color .2s}
.field textarea{min-height:140px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(35,50,255,.15)}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
.check{display:flex;gap:.7rem;align-items:flex-start;font-size:.92rem;color:var(--ink-2)}
.check input{width:20px;height:20px;margin-top:.15rem;accent-color:var(--blue);flex:none}
.form-status{grid-column:1/-1;margin:0;padding:.9rem 1rem;border-radius:6px;font-weight:600;display:none}
.form-status.ok{display:block;background:#dcf5e5;color:#0d5b2b}
.form-status.err{display:block;background:#fde3e0;color:#8a1c12}
.side-card{background:var(--ink);color:#fff;border-radius:28px;padding:1.8rem}
.side-card h3{font-size:1.3rem;margin-bottom:.6rem}
.side-card p{color:#c4cae0;margin-bottom:1.2rem;font-size:.97rem}
.side-card a{color:#fff;overflow-wrap:anywhere}
.side-card hr{border:0;border-top:1px solid rgba(255,255,255,.14);margin:1.3rem 0}
.privacy h3{font-size:1.15rem;margin:1.6rem 0 .4rem;letter-spacing:-.02em}
.privacy p,.privacy li{max-width:70ch;color:var(--ink-2);font-size:.97rem}
.privacy li{list-style:disc;margin-left:1.2rem}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#b9c0d8;margin-top:clamp(3.5rem,8vw,6rem);padding-block:clamp(2.5rem,6vw,4rem) 1.5rem;font-size:.96rem}
.foot-grid{display:grid;grid-template-columns:1.4fr .8fr 1fr;gap:2rem;padding-bottom:2rem;border-bottom:1px solid rgba(255,255,255,.12)}
.site-footer .brand{color:#fff;margin-bottom:1rem}
.site-footer h4{color:#fff;font-size:1rem;letter-spacing:-.01em;margin-bottom:.8rem}
.site-footer a{text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer li{padding:.2rem 0}
.legal{padding-top:1.3rem;font-size:.86rem;line-height:1.6;color:#8b93ad}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .hero-grid,.sec-head,.split,.contact-grid,.cta-band{grid-template-columns:1fr}
  .pcb{max-width:640px;aspect-ratio:8/6.4}
  .facts{grid-template-columns:repeat(2,1fr)}
  .facts li:nth-child(3){padding-left:0;border-left:0}
  .facts li:nth-child(n+3){margin-top:1.2rem}
  .bento{grid-template-columns:repeat(2,1fr)}
  .tile.feature,.tile.s3{grid-column:1/-1}
  .tile.feature{grid-row:auto;min-height:300px}
  .tile.s2{grid-column:span 1}
  .why{grid-template-columns:1fr}
  .why article,.why article+article{padding:1.6rem 0;border-left:0;border-bottom:1px solid var(--line)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .svc-row{grid-template-columns:1fr;gap:.8rem}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-grid>div:first-child{grid-column:1/-1}
}
@media (max-width:900px){
  .menu-btn{display:inline-flex}
  .nav{position:fixed;inset:var(--header-h) 0 auto 0;background:var(--paper);flex-direction:column;align-items:stretch;gap:0;padding:.5rem var(--gutter) 1.5rem;border-bottom:1.5px solid var(--ink);transform:translateY(-8px);opacity:0;visibility:hidden;transition:opacity .2s,transform .2s,visibility .2s}
  .nav.open{opacity:1;transform:none;visibility:visible}
  .nav a{padding:1rem 0;font-size:1.15rem;border-bottom:1px solid var(--line)}
  .nav a:not(.btn)::after{display:none}
  .nav .btn{margin:1rem 0 0;padding:1rem;font-size:1.05rem;border-bottom:0}
}
@media (max-width:620px){
  .form{grid-template-columns:1fr}
  .who{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .steps li{min-height:0}
  .steps li::before{margin-bottom:1rem}
  .bento{grid-template-columns:1fr}
  .tile.s2{grid-column:1/-1}
  .tile{min-height:180px}
  .foot-grid{grid-template-columns:1fr}
  .actions .btn{flex:1 1 100%}
  .facts li{padding-right:.8rem}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important}
  .pcb .trace{animation:none;stroke-dashoffset:0}
  .pcb .pulse{display:none}
}
@media print{.site-header,.site-footer .foot-grid,.cta-band{display:none}}