:root{
  --bg:#f4f4f4;
  --ink:#111;
  --muted:#5a5f66;
  --line:#d3d5d8;
  --blue:#195ab4;
  --blue-d:#134a96;
  --blue-s:#dfe8f6;
  --cell:106px;
  --nav:56px;
  --sans:"Hanken Grotesk","Helvetica Neue",Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav)}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);line-height:1.55;padding-top:var(--nav);-webkit-font-smoothing:antialiased;overflow-x:hidden}
svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;z-index:100}
.skip:focus{left:8px}

h1,h2,h3{font-weight:400;letter-spacing:-.02em;line-height:1.12}
h2{font-size:clamp(2rem,4.2vw,3.5rem);margin-bottom:20px}
h3{font-size:clamp(1.4rem,2vw,1.75rem)}
p{color:var(--muted)}
.slash{font-size:.95rem;color:var(--blue)}

/* bottoni: spigoli quasi vivi come il riferimento */
.btn{display:inline-block;background:var(--blue);color:rgba(255,255,255,.96);padding:9px 14px;border-radius:4px;font-size:.9rem;border:1px solid var(--blue);transition:background .2s}
.btn:hover{background:var(--blue-d);border-color:var(--blue-d)}
.btn--lg{padding:13px 22px;font-size:.95rem}
.btn--white{background:#fff;color:var(--blue);border-color:#fff}
.btn--white:hover{background:var(--blue-s);border-color:var(--blue-s)}

/* nav */
.nav{position:fixed;inset:0 0 auto 0;height:var(--nav);z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.nav__in{height:100%;display:flex;align-items:center;gap:40px;padding:0 clamp(16px,4vw,47px)}
.logo{font-weight:600;font-size:1.3rem;letter-spacing:-.04em}
.nav__links{display:none;gap:24px;font-size:.95rem}
.nav__links a:hover{color:var(--blue)}
.nav__right{margin-left:auto;display:flex;align-items:center;gap:10px}
.lang{display:flex;border:1px solid var(--line);border-radius:4px;overflow:hidden}
.lang button{padding:7px 11px;font-size:.82rem;font-weight:500;color:var(--muted);line-height:1}
.lang button+button{border-left:1px solid var(--line)}
.lang button:hover{color:var(--blue)}
.lang button[aria-pressed="true"]{background:var(--blue);color:#fff}
@media(max-width:480px){.btn--nav{display:none}}
.burger{width:40px;height:40px;display:grid;place-content:center;gap:6px}
.burger span{display:block;width:22px;height:2px;background:var(--ink);transition:transform .3s}
.burger[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}
@media(min-width:700px){.nav__links{display:flex}.burger{display:none}}
.menu{position:fixed;inset:var(--nav) 0 0 0;background:#fff;z-index:49;padding:12px clamp(16px,4vw,47px);opacity:0;visibility:hidden;transition:.25s}
.menu.open{opacity:1;visibility:visible}
.menu a{display:flex;gap:16px;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--line);font-size:clamp(1.5rem,6vw,2.2rem);letter-spacing:-.02em}
.menu small{font-size:.8rem;color:var(--blue);letter-spacing:0}
@media(min-width:700px){.menu{display:none}}

/* hero: la rete */
.hero{position:relative;padding-top:var(--cell);padding-bottom:calc(var(--cell)*.9);text-align:center}
.hero__grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:var(--cell) var(--cell);background-position:50% 0;
  -webkit-mask-image:linear-gradient(#000 0,#000 calc(var(--cell)*3),transparent 100%);mask-image:linear-gradient(#000 0,#000 calc(var(--cell)*3),transparent 100%)}
.hero__cell{position:absolute;left:0;top:0;width:var(--cell);height:var(--cell);background:rgba(25,90,180,.07);border:1px solid rgba(25,90,180,.35);opacity:0;transition:transform .18s ease-out,opacity .3s}
.hero__box{position:relative;width:calc(var(--cell)*5);height:calc(var(--cell)*2);margin:0 auto;background:var(--bg);border:1px solid var(--line);display:grid;place-items:center;padding:0 12px}
.hero h1{font-size:calc(var(--cell)*.4);line-height:1.15;letter-spacing:-.025em}
.hero h1 span,.hero h1 em{display:block}
.hero h1 em{font-style:normal;color:var(--blue)}

/* layout a riquadri */
.frame{width:min(100% - clamp(32px,5vw,70px),1200px);margin-inline:auto}
main .frame>*{margin-bottom:20px}
.box{border:1px solid var(--line);background:var(--bg);padding:clamp(24px,4vw,56px)}

.intro{display:grid;gap:32px;align-items:start}
.intro__brand{display:flex;align-items:center;gap:10px}
.intro__brand svg{width:44px;fill:none;stroke:var(--blue);stroke-width:2}
.intro__brand b{font-weight:600;letter-spacing:-.04em;font-size:1.3rem}
.intro__txt p{font-size:clamp(1.3rem,2.6vw,2.1rem);line-height:1.25;letter-spacing:-.02em;color:var(--ink);max-width:26em;margin-bottom:32px}
@media(min-width:800px){.intro{grid-template-columns:minmax(150px,1fr) 5fr}}

/* colonne servizi */
.cols{display:grid;gap:20px}
@media(min-width:900px){.cols{grid-template-columns:repeat(3,1fr)}}
.col{display:flex;flex-direction:column;border:1px solid var(--line);background:var(--bg);transition:border-color .3s}
.col:hover{border-color:var(--blue)}
.col__img,.assist__img{position:relative;overflow:hidden;border-bottom:1px solid var(--line);aspect-ratio:10/7;background:var(--blue-s)}
.col__img>svg,.col__img>img,.assist__img img{width:100%;height:100%;display:block;transition:transform .6s ease}
.col__img>img,.assist__img img{object-fit:cover}
.col:hover .col__img>img{transform:scale(1.03)}

/* lavagna di pianificazione in 3D */
.plan3d{--p3ink:#0f2a4f;--rx:10deg;--ry:-8deg;container-type:inline-size;
  background:radial-gradient(circle at 85% 8%,rgba(207,228,255,.9),transparent 45%),linear-gradient(135deg,#16345c,#3f6ea6 55%,#9dbbe0)}
.plan3d::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,transparent 0 17%,rgba(8,26,52,.35) 17% 19%);filter:blur(6px)}
.p3-scene{position:absolute;inset:0;perspective:1100px}
.p3-board{position:absolute;inset:7% 5%;transform-style:preserve-3d;transform:rotateX(var(--rx)) rotateY(var(--ry));
  border-radius:1.2cqw;border:2px solid rgba(255,255,255,.95);
  background:linear-gradient(135deg,rgba(255,255,255,.84),rgba(222,235,251,.66));
  box-shadow:0 2.5cqw 5cqw -1.5cqw rgba(5,20,45,.65),inset 0 0 0 1px rgba(127,178,238,.35)}
/* riflessi sul vetro */
.p3-board::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(105deg,transparent 52%,rgba(255,255,255,.55) 53% 60%,transparent 61% 66%,rgba(255,255,255,.4) 67% 69%,transparent 70%)}
.p3-lines{position:absolute;inset:0;width:100%;height:100%;overflow:visible;transform:translateZ(1px)}
.p3-lines path{fill:none;stroke:var(--p3ink);stroke-width:7;stroke-linecap:round}
.p3-lines marker path{stroke-width:2;stroke-linejoin:round}
.p3-arrow{marker-end:url(#p3-ar)}

.p3-step,.p3-node{position:absolute;transform:translateZ(16px)}
.p3-step{left:calc(var(--x)/10*1%);top:calc(var(--y)/7*1%);width:calc(var(--w)/10*1%);height:calc(var(--h)/7*1%);
  display:grid;place-items:center;border:2px solid var(--p3ink);border-radius:.8cqw;color:var(--p3ink);
  font-size:2.7cqw;font-weight:600;letter-spacing:.04em;white-space:nowrap;
  background:linear-gradient(180deg,#eaf2fc,#c3d8f3);
  box-shadow:0 1px 0 var(--p3ink),0 2px 0 var(--p3ink),0 3px 0 var(--p3ink),0 4px 0 var(--p3ink),0 5px 0 var(--p3ink),0 1.6cqw 2cqw -.6cqw rgba(8,25,55,.5)}

.p3-node{left:calc((var(--cx) - var(--r))/10*1%);top:calc((var(--cy) - var(--r))/7*1%);width:calc(var(--r)/5*1%);aspect-ratio:1;
  display:grid;place-items:center;border-radius:50%;border:2px solid var(--p3ink);color:var(--p3ink);
  background:linear-gradient(180deg,#eaf2fc,#bcd4f2);
  box-shadow:0 1px 0 var(--p3ink),0 2px 0 var(--p3ink),0 3px 0 var(--p3ink),0 4px 0 var(--p3ink),0 1.4cqw 1.6cqw -.6cqw rgba(8,25,55,.5)}
.p3-node svg{width:54%;height:54%;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.p3-diamond{border-radius:.5cqw;transform:translateZ(16px) rotate(45deg)}
.p3-diamond svg{transform:rotate(-45deg)}
.p3-goal{color:#fff;background:linear-gradient(180deg,#245aa3,var(--p3ink))}
.p3-goal::after{content:"";position:absolute;inset:-14%;border-radius:50%;border:2px solid #4f8fe0;opacity:.6}

.p3-chip,.p3-goal-t{position:absolute;transform:translate(-50%,-50%) translateZ(10px);color:var(--p3ink);font-weight:600;letter-spacing:.08em;white-space:nowrap}
.p3-chip{left:79%;top:10%;font-size:1.9cqw}
.p3-goal-t{left:79%;top:92%;font-size:1.8cqw}

/* pennarello appoggiato in basso a sinistra, dove la lavagna è libera */
.p3-pen{position:absolute;left:10%;bottom:14%;width:22%;height:3.4%;border-radius:99px;
  background:linear-gradient(90deg,var(--p3ink) 0 7%,#e9eff7 7% 78%,var(--p3ink) 78%);
  box-shadow:0 .8cqw 1.4cqw rgba(5,20,45,.5),inset 0 -2px 0 rgba(0,0,0,.15);transform:rotate(-12deg)}
.col:hover .col__img>svg{transform:scale(1.03)}
.col__body{padding:28px;display:flex;flex-direction:column;gap:14px}

/* assistenza */
.assist{display:grid;gap:32px;align-items:center;padding:0}
.assist__img{border-bottom:0}
.assist__copy{padding:0 clamp(24px,4vw,56px) clamp(24px,4vw,40px);display:grid;gap:14px;align-content:center}
.assist__copy h2{margin-bottom:0}
.assist__copy p{font-size:1.15rem;max-width:34ch}
@media(min-width:900px){.assist{grid-template-columns:1fr 1fr;gap:0}.assist__img{border-right:1px solid var(--line);aspect-ratio:auto;min-height:380px}.assist__copy{padding:clamp(24px,4vw,56px)}}

/* cta */
.cta{background:var(--blue);color:#fff;padding:clamp(28px,5vw,64px);display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;
  background-image:linear-gradient(rgba(255,255,255,.13) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.13) 1px,transparent 1px);background-size:80px 80px;background-position:right top}
.cta span{font-size:.9rem;opacity:.8}
.cta h2{margin:8px 0 0;max-width:18ch;color:#fff}

/* contatti */
.contacts{display:grid;gap:32px;align-items:start}
.contacts h2{margin-bottom:0}
@media(min-width:900px){.contacts{grid-template-columns:1fr 2fr;gap:56px}}
.contact{display:grid;border-top:1px solid var(--line)}
.contact li{border-bottom:1px solid var(--line);padding:18px 0}
.contact small{display:block;font-size:.78rem;color:var(--muted)}
.contact a{font-size:clamp(1.1rem,2vw,1.4rem);letter-spacing:-.01em}
.contact a:hover{color:var(--blue)}

/* footer */
.foot{background:#fff;border-top:1px solid var(--line);padding-top:48px;margin-top:20px}
.foot__in{display:grid;gap:32px;padding-bottom:40px}
@media(min-width:800px){.foot__in{grid-template-columns:1fr 1fr;gap:64px}}
.foot__desc{margin-top:14px;max-width:44ch;font-size:.92rem}
.foot address{font-style:normal;font-size:.92rem;line-height:1.8;color:var(--muted)}
.foot address b{color:var(--ink)}
.foot__bar{border-top:1px solid var(--line);padding:20px 0;font-size:.82rem;color:var(--muted)}

/* comparsa allo scroll */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.cols .reveal:nth-child(2){transition-delay:.08s}.cols .reveal:nth-child(3){transition-delay:.16s}

@media(max-width:700px){:root{--cell:64px}.hero__box{padding:0 8px}}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* finestra "Contattaci" */
.cdlg{border:1px solid var(--line);border-radius:4px;padding:0;margin:auto;width:min(100% - 32px,460px);max-height:calc(100% - 32px);background:#fff;color:var(--ink);box-shadow:0 30px 60px -20px rgba(11,27,51,.45)}
.cdlg::backdrop{background:rgba(11,27,51,.55);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.cdlg__in{padding:clamp(20px,5vw,28px)}
.cdlg__head{display:flex;justify-content:space-between;align-items:center;gap:16px}
.cdlg h2{font-size:1.6rem;margin:0}
.cdlg__in>p{margin:8px 0 20px}
.cdlg__x{flex:none;width:38px;height:38px;border:1px solid var(--line);border-radius:4px;font-size:1.5rem;line-height:1;display:grid;place-items:center}
.cdlg__x:hover{border-color:var(--blue);color:var(--blue)}
.cdlg__list{display:grid;border:1px solid var(--line)}
.cdlg__opt{display:flex;align-items:center;gap:14px;width:100%;padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);transition:background .2s}
.cdlg__opt:last-child{border-bottom:0}
.cdlg__opt:hover{background:var(--blue-s)}
.cdlg__opt svg{flex:none;width:42px;height:42px;padding:10px;border-radius:4px;background:var(--blue);fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.cdlg__opt b{display:block;font-weight:600}
.cdlg__opt small{display:block;font-size:.85rem;color:var(--muted);word-break:break-word}

/* avviso "numero copiato" (computer) */
.toast{position:fixed;left:50%;bottom:24px;z-index:200;transform:translate(-50%,20px);opacity:0;visibility:hidden;transition:.3s;
  background:var(--ink);color:#fff;border-radius:4px;padding:14px 20px;display:grid;gap:2px;text-align:center;box-shadow:0 20px 40px -12px rgba(0,0,0,.45);width:max-content;max-width:calc(100% - 32px)}
.toast.show{opacity:1;visibility:visible;transform:translate(-50%,0)}
.toast b{font-size:1.4rem;font-weight:600;letter-spacing:.01em}
.toast span{font-size:.88rem;opacity:.8}