:root{--ink:#171719;--paper:#fff;--red:#d51f26;--line:#dedede;--soft:#f5f4f3;--max:1240px;--phi:1.618}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:300;line-height:1.55}a{color:inherit;text-decoration:none}img,svg{display:block;max-width:100%}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);border-bottom:1px solid var(--ink);backdrop-filter:blur(12px)}.nav{max-width:var(--max);margin:auto;height:82px;padding:10px 24px;display:flex;align-items:center;justify-content:space-between}.brand{width:220px}.brand img{width:100%}.nav-links{display:flex;align-items:center;gap:28px;font-size:.82rem;text-transform:uppercase;letter-spacing:.12em}.nav-links a{padding:10px 0;border-bottom:2px solid transparent}.nav-links a:hover,.nav-links a[aria-current="page"]{border-color:var(--red)}.menu-button{display:none;background:none;border:0;font:inherit;font-size:1.3rem}
.hero{min-height:calc(100vh - 82px);display:grid;grid-template-columns:1fr 1fr;position:relative;overflow:hidden;border-bottom:1px solid var(--ink)}.hero-copy{padding:clamp(64px,9vw,140px) max(24px,calc((100vw - var(--max))/2));padding-right:8vw;display:flex;flex-direction:column;justify-content:center;z-index:2}.eyebrow{color:var(--red);font-size:.76rem;text-transform:uppercase;letter-spacing:.18em;font-weight:600}.hero h1{font-size:clamp(3.2rem,7vw,7.4rem);line-height:.88;letter-spacing:-.06em;font-weight:300;margin:.28em 0}.hero h1 strong{font-weight:500}.hero p{font-size:clamp(1.05rem,1.5vw,1.32rem);max-width:620px}.hero-art{position:relative;background:#fff;border-left:1px solid var(--line);min-height:590px;display:grid;place-items:center;padding:clamp(18px,3vw,48px)}.hero-logo{width:min(94%,900px);height:auto;filter:drop-shadow(0 14px 28px rgba(23,23,25,.08))}.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}.button{display:inline-flex;align-items:center;gap:12px;border:1px solid var(--ink);padding:14px 19px;font-size:.76rem;text-transform:uppercase;letter-spacing:.12em;font-weight:600}.button.primary{background:var(--ink);color:#fff}.button:hover{background:var(--red);color:#fff;border-color:var(--red)}
.section{max-width:var(--max);margin:auto;padding:clamp(72px,10vw,150px) 24px}.section-head{display:grid;grid-template-columns:1fr 2fr;gap:40px;margin-bottom:65px}.section-number{font-size:.78rem;color:var(--red);font-weight:700;letter-spacing:.14em}.section h2{font-size:clamp(2.4rem,5vw,5.4rem);line-height:.95;font-weight:300;letter-spacing:-.045em;margin:0}.lead{font-size:clamp(1.12rem,1.6vw,1.4rem);max-width:780px}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink);border-left:1px solid var(--ink)}.service-card{min-height:300px;padding:32px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);display:flex;flex-direction:column;transition:.25s}.service-card:hover{background:var(--ink);color:#fff}.service-card .n{color:var(--red);font-weight:700}.service-card h3{font-size:1.65rem;line-height:1.1;font-weight:400;margin:auto 0 18px}.service-card p{font-size:.95rem}.service-card .arrow{font-size:1.4rem;color:var(--red);margin-top:18px}
.split{display:grid;grid-template-columns:1.618fr 1fr;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}.split-main{padding:clamp(48px,7vw,96px);background:var(--soft)}.split-aside{padding:clamp(48px,6vw,80px);background:var(--red);color:#fff}.split h2{font-size:clamp(2.5rem,5vw,5rem);font-weight:300;line-height:.95;margin:0 0 30px}.fact{border-top:1px solid currentColor;padding:20px 0}.fact b{display:block;font-size:.73rem;text-transform:uppercase;letter-spacing:.14em;margin-bottom:6px}.people{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--ink);border:1px solid var(--ink)}.person{background:#fff;padding:clamp(35px,5vw,65px)}.person .role{color:var(--red);text-transform:uppercase;letter-spacing:.13em;font-size:.75rem;font-weight:700}.person h3{font-size:clamp(2rem,4vw,4rem);font-weight:300;line-height:.98;margin:14px 0 24px}.person ul{padding-left:18px}.quote{font-size:clamp(1.8rem,4vw,4rem);line-height:1.12;letter-spacing:-.035em;max-width:950px}.quote em{color:var(--red);font-style:normal}
.page-hero{max-width:var(--max);margin:auto;padding:110px 24px 70px;border-bottom:1px solid var(--ink)}.page-hero h1{font-size:clamp(3.2rem,8vw,7rem);font-weight:300;line-height:.9;letter-spacing:-.055em;margin:20px 0}.content-grid{max-width:var(--max);margin:auto;padding:80px 24px 130px;display:grid;grid-template-columns:1fr 2fr;gap:70px}.toc{position:sticky;top:120px;align-self:start;border-top:1px solid var(--ink)}.toc a{display:block;padding:14px 0;border-bottom:1px solid var(--line);font-size:.85rem}.article-section{padding:0 0 65px;margin-bottom:65px;border-bottom:1px solid var(--line)}.article-section h2{font-size:clamp(2rem,4vw,4rem);font-weight:300;line-height:1;margin-top:0}.article-section h3{font-size:1.35rem}.process{counter-reset:steps}.process li{counter-increment:steps;list-style:none;padding:25px 0 25px 55px;border-top:1px solid var(--line);position:relative}.process li:before{content:"0" counter(steps);position:absolute;left:0;color:var(--red);font-weight:700}
.contact-band{background:var(--ink);color:#fff}.contact-band .section{padding-top:90px;padding-bottom:90px}.contact-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:70px}.contact-band h2{font-size:clamp(2.7rem,6vw,6.2rem);font-weight:300;line-height:.9;margin:0}.contact-list{border-top:1px solid #777}.contact-list a,.contact-list span{display:block;padding:13px 0;border-bottom:1px solid #555}.contact-list b{color:var(--red)}
footer{background:var(--ink);color:#fff;border-top:1px solid #555;padding:28px 24px}.footer-inner{max-width:var(--max);margin:auto;display:flex;justify-content:space-between;gap:25px;font-size:.75rem}.red{color:var(--red)}
@media(max-width:850px){.nav{height:68px}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;padding:24px;flex-direction:column;align-items:flex-start;border-bottom:1px solid var(--ink)}.nav-links.open{display:flex}.menu-button{display:block}.hero{grid-template-columns:1fr}.hero-copy{padding:75px 24px 50px}.hero-art{min-height:360px;border-left:0;border-top:1px solid var(--line)}.section-head,.content-grid,.contact-grid{grid-template-columns:1fr}.service-grid{grid-template-columns:1fr}.service-card{min-height:240px}.split,.people{grid-template-columns:1fr}.toc{position:static}.footer-inner{flex-direction:column}.brand{width:180px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Variante grafica: segni architettonici, linee a tutta pagina e accenti rossi */
body{overflow-x:clip}
.hero:after{content:"";position:absolute;z-index:4;left:50%;bottom:0;width:clamp(72px,10vw,150px);height:13px;background:var(--red);transform:translateX(-50%)}
main>.section,.page-hero,.content-grid{position:relative}
main>.section:before,.content-grid:before{content:"";position:absolute;z-index:1;top:0;left:50%;width:100vw;height:1px;background:var(--ink);transform:translateX(-50%)}
.section-head{position:relative;padding-top:34px}
.section-head:before{content:"";position:absolute;top:0;left:calc(33.333% + 14px);width:clamp(54px,6vw,88px);height:10px;background:var(--red)}
.service-card{position:relative}
.service-card .arrow{position:relative;display:block;width:18px;height:18px;font-size:0}
.service-card .arrow:before{content:"";position:absolute;left:1px;top:9px;width:15px;height:1px;background:var(--red);transform:rotate(-45deg);transform-origin:center}
.service-card .arrow:after{content:"";position:absolute;right:0;top:0;width:8px;height:8px;border-top:1px solid var(--red);border-right:1px solid var(--red)}
.service-card:nth-child(2):before,.service-card:nth-child(5):before{content:"";position:absolute;top:-1px;right:28px;width:44px;height:8px;background:var(--red)}
.split-main{position:relative}
.split-main:after{content:"";position:absolute;right:0;bottom:0;width:clamp(74px,9vw,132px);height:16px;background:var(--red)}
.person{position:relative}
.person:before{content:"";position:absolute;top:-1px;left:clamp(35px,5vw,65px);width:52px;height:9px;background:var(--red)}
.person-primary{background:var(--soft)}
.person-primary:before{width:clamp(92px,10vw,145px)}
.profile-primary{background:linear-gradient(90deg,var(--soft),#fff);padding:42px 38px 65px;margin-left:-38px;margin-right:-38px}
.profile-primary h2:before{width:110px}
.quote{position:relative;padding-top:38px}
.quote:before{content:"";position:absolute;top:0;left:0;width:clamp(95px,15vw,190px);height:2px;background:var(--ink)}
.page-hero{border-bottom:0}
.page-hero:before{content:"";position:absolute;left:50%;bottom:0;width:100vw;height:1px;background:var(--ink);transform:translateX(-50%)}
.page-hero:after{content:"";position:absolute;left:24px;bottom:-7px;width:clamp(74px,9vw,124px);height:14px;background:var(--red)}
.article-section h2:before{content:"";display:block;width:46px;height:7px;margin:0 0 24px;background:var(--red)}
.profile-lead{font-size:clamp(1.12rem,1.7vw,1.35rem);line-height:1.55;max-width:780px;margin-bottom:34px}
.profile-facts{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ink);border-left:1px solid var(--ink);margin:34px 0 48px}
.profile-facts>div{min-height:150px;padding:25px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.profile-facts b{display:block;color:var(--red);font-size:.76rem;letter-spacing:.13em;text-transform:uppercase;margin-bottom:13px}
.profile-facts span{display:block;line-height:1.45}
.profile-detail{max-width:790px}
.profile-detail h3{margin:36px 0 9px;font-size:.79rem;text-transform:uppercase;letter-spacing:.13em;color:var(--red)}
.profile-detail p{margin-top:0}
.profile-contact{border-top:1px solid var(--ink);padding-top:22px;margin-top:42px;font-weight:400}
.process li:nth-child(2):after,.process li:nth-child(5):after{content:"";position:absolute;top:-1px;right:0;width:50px;height:7px;background:var(--red)}
.contact-band{position:relative}
.contact-band:before{content:"";position:absolute;top:0;left:0;width:clamp(90px,14vw,210px);height:12px;background:var(--red)}

@media(max-width:850px){.hero:after{left:24px;transform:none}.section-head{padding-top:30px}.section-head:before{left:0}.page-hero:after{left:24px}.service-card:nth-child(2):before,.service-card:nth-child(5):before{right:24px}.split-main:after{right:auto;left:0}.person:before{left:35px}}
@media(max-width:560px){.nav{padding:8px 18px}.brand{width:158px}.hero-copy{padding:62px 18px 42px}.hero h1{font-size:clamp(3rem,17vw,4.8rem)}.hero-art{min-height:310px}.actions{display:grid;grid-template-columns:1fr}.button{justify-content:center;text-align:center}.section{padding-left:18px;padding-right:18px}.section-head{gap:24px;margin-bottom:42px}.service-card{min-height:220px;padding:27px 24px}.split-main,.split-aside{padding:48px 24px}.person{padding:42px 24px}.person:before{left:24px}.page-hero{padding:82px 18px 58px}.page-hero:after{left:18px}.content-grid{padding:66px 18px 90px;gap:48px}.contact-band .section{padding-top:72px;padding-bottom:72px}.contact-grid{gap:44px}.footer-inner{gap:8px}.nav-links{padding-left:18px;padding-right:18px}}
@media(max-width:560px){.profile-facts{grid-template-columns:1fr}.profile-facts>div{min-height:auto}.profile-lead{font-size:1.08rem}}
@media(max-width:560px){.profile-primary{margin-left:0;margin-right:0;padding:32px 24px 50px}}

/* Percorso orientato al problema e segnali immediati di affidabilità */
.credibility-strip{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--ink);background:var(--ink);color:#fff;padding:0 max(24px,calc((100vw - var(--max))/2));font-size:.7rem;text-transform:uppercase;letter-spacing:.12em;font-weight:600}
.credibility-strip span{padding:17px 22px;border-right:1px solid #555}
.credibility-strip span:first-child{border-left:1px solid #555}
.credibility-strip span:nth-child(3){color:#fff;background:var(--red)}
.problem-finder{max-width:var(--max);margin:auto;padding:clamp(72px,9vw,126px) 24px;display:grid;grid-template-columns:1fr 2fr;gap:70px;position:relative}
.problem-finder:before{content:"";position:absolute;top:0;left:50%;width:100vw;height:1px;background:var(--ink);transform:translateX(-50%)}
.problem-intro{position:sticky;top:120px;align-self:start}
.problem-intro h2{font-size:clamp(2.5rem,5vw,5rem);font-weight:300;line-height:.92;letter-spacing:-.045em;margin:20px 0 26px}
.problem-intro p{font-size:1.08rem;max-width:390px}
.problem-links{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ink);border-left:1px solid var(--ink)}
.problem-links a{position:relative;min-height:172px;padding:26px 52px 26px 26px;border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);display:flex;flex-direction:column;justify-content:space-between;transition:.2s}
.problem-links a:after{content:"→";position:absolute;right:24px;top:23px;color:var(--red);font-size:1.35rem}
.problem-links a:hover{background:var(--ink);color:#fff}
.problem-links b{font-size:1.17rem;line-height:1.2;font-weight:500}
.problem-links span{font-size:.88rem;line-height:1.45;color:#555}
.problem-links a:hover span{color:#ddd}
.problem-links a:nth-child(2):before,.problem-links a:nth-child(5):before{content:"";position:absolute;left:26px;bottom:-1px;width:48px;height:7px;background:var(--red);z-index:2}
@media(max-width:850px){.credibility-strip{grid-template-columns:1fr 1fr;padding:0}.credibility-strip span{border-bottom:1px solid #555}.problem-finder{grid-template-columns:1fr;gap:42px}.problem-intro{position:static}.problem-intro p{max-width:650px}}
@media(max-width:560px){.credibility-strip{grid-template-columns:1fr}.credibility-strip span,.credibility-strip span:first-child{padding:14px 18px;border-left:0;border-right:0}.problem-finder{padding:66px 18px 84px}.problem-links{grid-template-columns:1fr}.problem-links a{min-height:154px;padding:24px 48px 24px 24px}}
.article-section{scroll-margin-top:118px}

/* Collage a inchiostro: il velo bianco mantiene il testo in primo piano. */
.hero-copy,.problem-finder,main>.section,.page-hero,.content-grid{
  background-image:linear-gradient(rgba(255,255,255,.88),rgba(255,255,255,.88)),url("technical-collage-v2.webp");
  background-size:cover;
  background-position:center;
}
@media(max-width:560px){
  .hero-copy,.problem-finder,main>.section,.page-hero,.content-grid{
    background-image:linear-gradient(rgba(255,255,255,.91),rgba(255,255,255,.91)),url("technical-collage-v2.webp");
  }
}

/* Profili in home: struttura e tipografia identiche per entrambi. */
.people .person{display:flex;flex-direction:column;background:#fff}
.people .person:before{width:52px}
.person-details{font-size:1rem;line-height:1.55;flex:1}
.person-details p{margin:0 0 22px}
.person-label{display:block;color:var(--red);font-size:.72rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;margin-bottom:7px}
.people .person .button{align-self:flex-start;margin-top:10px}