:root{
  --ink:#122130; --ink-2:#3b4b5c; --muted:#66768a;
  --bg:#ffffff; --bg-alt:#f2f4f7; --line:#dde3ea;
  --navy:#0f2437; --navy-2:#16324b;
  --accent:#e46c0b; --accent-ink:#a34b05;
  --radius:10px; --wrap:1120px;
  --font:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.2;margin:0;font-weight:650;letter-spacing:-.01em}
h2{font-size:clamp(28px,3.4vw,38px)}
h3{font-size:20px}
.kicker{font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
.lead{color:var(--muted);font-size:18px;max-width:640px;margin:14px 0 0}
section{padding:96px 0}
.alt{background:var(--bg-alt)}

/* header */
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:32px;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;font-size:20px;letter-spacing:-.02em}
.brand img{height:34px;width:auto}
.brand .mark{width:30px;height:30px;border-radius:7px;background:var(--navy);display:grid;place-items:center}
.brand .mark svg{width:18px;height:18px}
.nav{display:flex;gap:28px;margin-left:auto}
.nav a{text-decoration:none;font-size:15px;color:var(--ink-2)}
.nav a:hover{color:var(--ink)}
.langs{display:flex;gap:2px;border:1px solid var(--line);border-radius:999px;padding:3px}
.langs a{text-decoration:none;font-size:12px;font-weight:600;padding:4px 9px;border-radius:999px;color:var(--muted)}
.langs a[aria-current]{background:var(--navy);color:#fff}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:8px;padding:7px 10px;font:inherit;font-size:14px;cursor:pointer;color:var(--ink)}

/* hero */
.hero{position:relative;background:var(--navy);color:#fff;padding:120px 0 110px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px),
  linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:96px 96px,96px 96px,24px 24px,24px 24px}
.hero.has-img::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,36,55,.95) 0%,rgba(15,36,55,.8) 50%,rgba(15,36,55,.45) 100%)}
.hero .bgimg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero .wrap{position:relative;z-index:1}
.hero h1{font-size:clamp(36px,5.4vw,60px);max-width:820px;margin-top:18px}
.hero p{font-size:clamp(17px,1.6vw,20px);color:#c5d1dd;max-width:640px;margin:22px 0 0}
.ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.btn{display:inline-block;text-decoration:none;font-weight:600;font-size:16px;padding:14px 24px;border-radius:8px;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#f07a1a}
.btn-ghost{border-color:rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{border-color:#fff}

/* services */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:52px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.card .ico{width:48px;height:48px;border-radius:10px;background:#fdebdc;display:grid;place-items:center;margin-bottom:22px}
.card .ico svg{width:26px;height:26px;stroke:var(--accent-ink)}
.card p{color:var(--ink-2);margin:12px 0 18px;font-size:16px}
.card ul{list-style:none;margin:0;padding:18px 0 0;border-top:1px solid var(--line)}
.card li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-2);margin:8px 0}
.card li::before{content:"";position:absolute;left:0;top:.65em;width:8px;height:2px;background:var(--accent)}

/* about */
.about{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:center}
.about .photo{aspect-ratio:4/5;border-radius:var(--radius);overflow:hidden}
.about .photo img{width:100%;height:100%;object-fit:cover}
.about p{color:var(--ink-2);margin:18px 0 0}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:36px;border-top:1px solid var(--line)}
.facts div{padding:18px 16px 0 0}
.facts dt{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.facts dd{margin:6px 0 0;font-size:15px;font-weight:550}

/* projects */
.projects{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:52px}
.proj{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.proj .pimg{aspect-ratio:4/3;overflow:hidden}
.proj .pimg img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.proj:hover .pimg img{transform:scale(1.03)}
.proj .pbody{padding:20px 22px 24px}
.proj .cat{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-ink)}
.proj h3{font-size:18px;margin-top:8px}
.proj .loc{color:var(--muted);font-size:14px;margin-top:6px}

/* placeholders */
.ph{width:100%;height:100%;min-height:100%;display:grid;place-items:center;color:#8a99a8;font-size:13px;letter-spacing:.08em;text-transform:uppercase;
  background:#e7ecf1;background-image:linear-gradient(rgba(15,36,55,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(15,36,55,.06) 1px,transparent 1px);background-size:24px 24px}

/* contact */
.contact{display:grid;grid-template-columns:5fr 7fr;gap:64px}
.cinfo{margin-top:32px;display:grid;gap:22px}
.cinfo dt{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.cinfo dd{margin:4px 0 0;font-size:17px}
.cinfo a{text-decoration:none;border-bottom:1px solid var(--line)}
.cinfo a:hover{border-color:var(--accent)}
form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;display:grid;gap:18px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
label{display:grid;gap:6px;font-size:14px;font-weight:550;color:var(--ink-2)}
input,textarea{font:inherit;font-size:16px;padding:12px 14px;border:1px solid #c9d2dc;border-radius:8px;color:var(--ink);background:#fff}
input:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
textarea{min-height:140px;resize:vertical}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:14px;color:var(--muted)}
.check input{margin-top:3px;width:18px;height:18px;flex:none}
.hp{position:absolute;left:-9999px}
form .btn{justify-self:start;background:var(--navy);color:#fff}
form .btn:hover{background:var(--navy-2)}

/* footer */
footer{background:var(--navy);color:#9fb0c1;font-size:14px;padding:40px 0}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between}
footer a{color:#c5d1dd}
footer strong{color:#fff}

@media (max-width:900px){
  section{padding:72px 0}
  .grid3,.projects{grid-template-columns:1fr}
  .projects{grid-template-columns:1fr 1fr}
  .about,.contact{grid-template-columns:1fr;gap:40px}
  .about .photo{max-width:360px}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;gap:0;border-bottom:1px solid var(--line);padding:8px 24px 16px}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav.open{display:flex}
  .burger{display:block}
  .langs{margin-left:0}
  .top .wrap{gap:14px}
}
@media (max-width:600px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .projects,.row2,.facts{grid-template-columns:1fr}
  .hero{padding:80px 0 76px}
  .card,form{padding:24px}
}

/* pagina informativa */
.legal{padding:72px 0 96px}
.legal .wrap{max-width:780px}
.legal h1{font-size:clamp(30px,4vw,42px)}
.legal h2{font-size:20px;margin-top:36px}
.legal p{color:var(--ink-2);margin:10px 0 0}
.legal .lead{margin-top:16px}
.legal .upd{margin-top:40px;font-size:14px;color:var(--muted)}
.check a{color:var(--ink-2)}
.facts{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.facts div{padding-right:20px}
.contact.solo{grid-template-columns:1fr;gap:0}
.contact.solo .cinfo{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-top:36px}

/* hero con immagine laterale */
.hero{padding:88px 0}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-img{border-radius:14px;overflow:hidden;aspect-ratio:4/5;max-height:520px;box-shadow:0 20px 50px rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.12)}
.hero-img img{width:100%;height:100%;object-fit:cover}
.kicker{color:#f28a3c}
/* chi sono: foto piccola tonda */
.about{grid-template-columns:200px 1fr;gap:48px;align-items:start}
.about .photo{width:200px;height:200px;aspect-ratio:auto;border-radius:50%;box-shadow:0 0 0 6px #fff,0 6px 20px rgba(15,36,55,.15)}
.about .photo .ph{border-radius:50%}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-img{aspect-ratio:16/9;max-height:none}
  .about{grid-template-columns:1fr;gap:28px}
  .about .photo{width:150px;height:150px}
}
/* allinea titolo, descrizione ed elenco tra i riquadri dei servizi */
.grid3{grid-template-rows:auto auto auto auto}
.card{display:grid;grid-template-rows:subgrid;grid-row:span 4;row-gap:0;align-content:start}
.card p{align-self:start}
@media (max-width:900px){.grid3{grid-template-rows:none}.card{grid-template-rows:none;grid-row:auto}}

/* banner cookie */
.cc{position:fixed;left:16px;right:16px;bottom:16px;z-index:50;max-width:760px;margin:0 auto;background:#fff;color:var(--ink);
  border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 40px rgba(15,36,55,.22);padding:22px 56px 22px 24px;
  display:flex;gap:20px;align-items:center}
.cc[hidden]{display:none}
.cc p{margin:0;font-size:14px;line-height:1.55;color:var(--ink-2)}
.cc p a{color:var(--ink)}
.cc-btns{display:flex;gap:10px;flex:none}
.cc-btn{padding:10px 20px;font-size:15px;background:var(--navy);color:#fff;border:1px solid var(--navy)}
.cc-btn:hover{background:var(--navy-2)}
.cc-x{position:absolute;top:8px;right:10px;background:none;border:0;font-size:24px;line-height:1;color:var(--muted);cursor:pointer;padding:4px 8px}
.cc-x:hover{color:var(--ink)}
@media (max-width:640px){.cc{flex-direction:column;align-items:stretch;padding:20px}.cc p{padding-right:24px}.cc-btns .cc-btn{flex:1}}

/* fascia video BIM */
.bim{background:var(--navy);color:#fff;padding:88px 0}
.bim-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.bim-video{border-radius:14px;overflow:hidden;aspect-ratio:876/720;box-shadow:0 20px 50px rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.12);background:#fff}
.bim-video video{width:100%;height:100%;object-fit:cover;display:block}
.bim h2{margin-top:14px}
.bim p{color:#c5d1dd;font-size:18px;margin:18px 0 0}
@media (max-width:900px){.bim{padding:64px 0}.bim-grid{grid-template-columns:1fr;gap:32px}}

/* 4 servizi + anteprima video */
#servizi .wrap{max-width:1280px}
.grid3{grid-template-columns:repeat(4,1fr);gap:20px;grid-template-rows:none}
.grid3 .card{padding:28px 26px}
.vwrap{border-top:1px solid var(--line);padding-top:22px;align-self:start}
.vthumb{position:relative;display:block;width:100%;padding:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;cursor:pointer;background:#fff;aspect-ratio:876/720;align-self:start}
.vthumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.vthumb:hover img{transform:scale(1.03)}
.vthumb .play{position:absolute;inset:0;margin:auto;width:58px;height:58px;border-radius:50%;background:var(--accent);display:grid;place-items:center;box-shadow:0 6px 20px rgba(0,0,0,.25);transition:transform .2s}
.vthumb:hover .play{transform:scale(1.08)}
.vthumb .play svg{width:26px;height:26px;fill:#fff;margin-left:3px}
.vdlg{padding:0;border:0;border-radius:12px;background:#000;max-width:min(92vw,105vh,1000px);width:100%;overflow:visible}
.vdlg::backdrop{background:rgba(10,20,30,.8)}
.vdlg video{width:100%;aspect-ratio:876/720;display:block;border-radius:12px;background:#000}
.vdlg-x{position:absolute;top:-44px;right:0;background:none;border:0;color:#fff;font-size:34px;line-height:1;cursor:pointer}
@media (max-width:1200px){.grid3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:700px){.grid3{grid-template-columns:1fr}}

/* sfondi disegnati a mano */
.hero{background:var(--navy) url(img/sfondo-hero.png) no-repeat center / auto 100%}
.hero::before{display:none}
#servizi{background:#fff url(img/sfondo-servizi.png) no-repeat center / cover}