/* Option 2 · Corporate — Montserrat + Source Sans 3 */
:root{--bg:#fff;--soft:#f4f5f8;--ink:#13203a;--text:#3d4757;--muted:#6b7483;--line:#e2e5eb;--brand:#5a4fa0;--brand-dark:#463d86;--navy:#0f1a30;
  --head:'Montserrat',Arial,sans-serif;--sans:'Source Sans 3',Arial,sans-serif;--pad:clamp(18px,4vw,56px);--gap:clamp(56px,7vw,96px);--r:8px}
body.archvi-concept--corporate{background:var(--bg);color:var(--text);font:400 17px/1.65 var(--sans)}
.c4 h1,.c4 h2,.c4 h3{font-family:var(--head);color:var(--ink);font-weight:600;letter-spacing:-.02em;line-height:1.12}
.c4 h2{font-size:clamp(32px,3.4vw,50px)}
.c4-wrap{padding-inline:var(--pad);max-width:1360px;margin-inline:auto;box-sizing:content-box}
.c4-label{display:inline-flex;align-items:center;gap:10px;font:600 13px/1.2 var(--head);letter-spacing:.12em;text-transform:uppercase;color:var(--brand)}
.c4-label::before{content:"";width:24px;height:2px;background:currentColor}
.c4-label--light{color:#d8d3ff}
.c4-btn{display:inline-flex;align-items:center;gap:10px;padding:15px 26px;border-radius:var(--r);background:var(--brand);color:#fff;font:600 15px/1 var(--head);transition:background .25s,color .25s,border-color .25s,box-shadow .25s}
.c4-btn:hover{background:var(--brand-dark);box-shadow:0 10px 24px rgba(90,79,160,.25)}
.c4-btn--outline{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.c4-btn--outline:hover{background:transparent;border-color:var(--brand);color:var(--brand);box-shadow:none}
.c4-btn--outline-light{background:transparent;border:1.5px solid rgba(255,255,255,.6);color:#fff}
.c4-btn--outline-light:hover{background:#fff;color:var(--ink);box-shadow:none}
.c4-btn--white{background:#fff;color:var(--ink)}
.c4-btn--white:hover{background:#eceaff;color:var(--brand-dark);box-shadow:none}
.c4-actions{display:flex;flex-wrap:wrap;gap:12px}
.c4-link{display:inline-flex;align-items:center;gap:8px;font:600 15px/1 var(--head);color:var(--brand);transition:gap .25s}
.c4-link:hover{gap:12px}
.c4-center{display:flex;justify-content:center;margin-top:clamp(28px,3vw,40px)}

/* Header */
.cx-header{position:fixed;inset:0 0 auto;z-index:100;display:flex;align-items:center;gap:32px;height:80px;padding-inline:var(--pad);color:#fff;transition:background .3s,color .3s,box-shadow .3s,height .3s}
.cx-header.is-scrolled{height:70px;background:#fff;color:var(--ink);box-shadow:0 2px 18px rgba(15,26,48,.08)}
.cx-header__brand{display:inline-flex;align-items:center;gap:10px;font:700 21px/1 var(--head);letter-spacing:-.02em}
.cx-header__brand img{width:30px;height:30px;transition:filter .3s}
.cx-header.is-scrolled .cx-header__brand img{filter:invert(1)}
.cx-header__nav{display:flex;gap:30px;margin-left:auto;font:500 15px/1 var(--head)}
.cx-header__nav a{padding:8px 0;border-bottom:2px solid transparent;transition:border-color .25s,color .25s}
.cx-header__nav a:hover{border-color:var(--brand)}
.cx-header__cta{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:var(--r);background:var(--brand);color:#fff;font:600 14px/1 var(--head)}
.cx-header__cta:hover{background:var(--brand-dark)}
.cx-header__toggle{display:none;flex-direction:column;justify-content:center;gap:6px;width:44px;height:44px;margin-left:auto}
.cx-header__toggle span:not(.cx-sr){display:block;width:24px;height:2px;background:currentColor;transition:transform .3s}
.cx-menu{display:none}

/* Hero */
.c4-hero{position:relative;min-height:min(100svh,880px);display:flex;align-items:center;overflow:hidden;color:#fff;background:var(--navy)}
.c4-hero__shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,26,48,.85) 0%,rgba(15,26,48,.55) 45%,rgba(15,26,48,.15) 100%)}
.c4-hero__inner{position:relative;display:grid;gap:22px;justify-items:start;width:100%;padding-top:100px;padding-bottom:140px}
.c4-hero h1{color:#fff;font-size:clamp(44px,5.8vw,86px);font-weight:700;line-height:1.04;max-width:760px}
.c4-hero__lede{max-width:520px;font-size:clamp(18px,1.4vw,21px);color:rgba(255,255,255,.88)}

/* Service quick links overlapping the hero */
.c4-quick{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:-64px;border-radius:var(--r);background:#fff;box-shadow:0 20px 50px rgba(15,26,48,.12);padding-inline:0;max-width:1360px}
.c4-quick a{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;padding:28px 26px;border-left:1px solid var(--line);color:var(--ink);transition:background .25s,color .25s}
.c4-quick a:first-child{border-left:0;border-radius:var(--r) 0 0 var(--r)}
.c4-quick a:last-child{border-radius:0 var(--r) var(--r) 0}
.c4-quick a:hover{background:var(--soft);color:var(--brand)}
.c4-quick__num{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:#eeecfb;color:var(--brand);font:700 13px/1 var(--head)}
.c4-quick__title{font:600 16px/1.25 var(--head)}

/* Logos */
.c4-logos{display:grid;justify-items:center;gap:22px;padding-block:clamp(44px,5vw,64px) clamp(20px,3vw,32px)}
.c4-logos ul{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));width:100%;border:1px solid var(--line);border-radius:var(--r)}
.c4-logos li{display:grid;place-items:center;min-height:76px;padding:0 8px;border-left:1px solid var(--line);font:600 clamp(13px,1.1vw,17px)/1.2 var(--head);letter-spacing:.08em;text-transform:uppercase;color:#8b93a1;text-align:center;transition:color .25s}
.c4-logos li:first-child{border-left:0}
.c4-logos li:hover{color:var(--ink)}

/* Section heads */
.c4-head{display:grid;gap:14px;margin-bottom:clamp(28px,3.4vw,48px)}
.c4-head>p:last-child:not(.c4-label){max-width:640px;color:var(--muted)}
.c4-head--center{justify-items:center;text-align:center}
.c4-head--row{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:20px}
.c4-head--row>div{display:grid;gap:14px}

/* Services */
.c4-services{padding-block:var(--gap) calc(var(--gap) * .5)}
.c4-services__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.c4-svc{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1fr);overflow:hidden;border:1px solid var(--line);border-radius:var(--r);background:#fff;transition:box-shadow .3s,border-color .3s,transform .3s}
.c4-svc:hover{box-shadow:0 18px 40px rgba(15,26,48,.1);border-color:transparent;transform:translateY(-3px)}
.c4-svc__media{position:relative;display:block;min-height:300px;overflow:hidden;background:var(--soft)}
.c4-svc__media :is(img,video){transition:transform .8s ease}
.c4-svc:hover .c4-svc__media :is(img,video){transform:scale(1.04)}
.c4-svc__body{display:grid;align-content:start;gap:12px;padding:clamp(22px,2.4vw,32px)}
.c4-svc__num{font:700 13px/1 var(--head);color:var(--brand);letter-spacing:.1em}
.c4-svc h3{font-size:clamp(21px,1.7vw,25px)}
.c4-svc h3 a:hover{color:var(--brand)}
.c4-svc p{font-size:15.5px;color:var(--muted)}
.c4-tags{display:flex;flex-wrap:wrap;gap:6px}
.c4-tags li{padding:4px 10px;border-radius:4px;background:var(--soft);font-size:13px;color:var(--text)}
.c4-svc .c4-link{margin-top:6px}

/* Portfolio */
.c4-work{padding-block:calc(var(--gap) * .5)}
.c4-work__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.c4-tile{display:block;overflow:hidden;border:1px solid var(--line);border-radius:var(--r);background:#fff;transition:box-shadow .3s}
.c4-tile:hover{box-shadow:0 18px 40px rgba(15,26,48,.1)}
.c4-tile__media{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:var(--soft)}
.c4-tile__media img{transition:transform .8s ease}
.c4-tile:hover .c4-tile__media img{transform:scale(1.04)}
.c4-tile__badge{position:absolute;left:14px;top:14px;display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:4px;background:rgba(15,26,48,.75);color:#fff;font:600 12px/1 var(--head)}
.c4-tile__meta{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;color:var(--ink)}
.c4-tile__meta>span{display:grid;gap:2px}
.c4-tile__meta strong{font:600 18px/1.25 var(--head)}
.c4-tile__meta small{font-size:14px;color:var(--muted)}
.c4-tile__meta .cx-arrow{color:var(--brand);transition:transform .25s}
.c4-tile:hover .c4-tile__meta .cx-arrow{transform:translateX(4px)}

/* Showreel */
.c4-reel{padding-block:calc(var(--gap) * .5)}
.c4-reel__frame{position:relative;aspect-ratio:16/9;max-height:84svh;width:100%;overflow:hidden;border-radius:var(--r) var(--r) 0 0;background:#000;color:#fff}
.c4-reel__shade{position:absolute;inset:0;background:linear-gradient(0deg,rgba(15,26,48,.85) 0%,rgba(15,26,48,.2) 50%,rgba(15,26,48,.1) 100%)}
.c4-reel__copy{position:absolute;left:clamp(22px,3.4vw,52px);bottom:clamp(22px,3.4vw,48px);display:grid;gap:12px;max-width:640px}
.c4-reel__copy h2{color:#fff;font-size:clamp(30px,3.6vw,54px)}
.c4-reel__play{position:absolute;inset:0;margin:auto;display:grid;place-items:center;width:clamp(84px,7vw,104px);height:clamp(84px,7vw,104px);border-radius:50%;background:#fff;color:var(--brand);box-shadow:0 12px 34px rgba(0,0,0,.3);transition:transform .3s,background .3s,color .3s}
.c4-reel__play:hover{transform:scale(1.06);background:var(--brand);color:#fff}
.c4-reel__chapters{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-top:0;border-radius:0 0 var(--r) var(--r);overflow:hidden}
.c4-reel__chapters button{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding:20px 22px;border-left:1px solid var(--line);text-align:left;color:var(--ink);transition:background .25s}
.c4-reel__chapters button:first-child{border-left:0}
.c4-reel__chapters button:hover{background:var(--soft)}
.c4-reel__chapters span{font:700 13px/1 var(--head);color:var(--brand)}
.c4-reel__chapters strong{font:600 15px/1.3 var(--head)}
.c4-reel__chapters small{font-size:13px;color:var(--muted)}

/* Case study: one large image, three text buttons */
.c4-case{padding-block:calc(var(--gap) * .5)}
.c4-case__frame{position:relative;min-height:min(84svh,780px);display:flex;flex-direction:column;justify-content:flex-end;overflow:hidden;border-radius:var(--r);color:#fff;background:var(--navy)}
.c4-case__image{position:absolute;inset:0}
.c4-case__shade{position:absolute;inset:0;background:linear-gradient(0deg,rgba(15,26,48,.92) 0%,rgba(15,26,48,.55) 40%,rgba(15,26,48,.05) 75%)}
.c4-case__copy{position:relative;display:grid;gap:14px;max-width:680px;padding:0 clamp(22px,3.4vw,52px)}
.c4-case__copy h2{color:#fff}
.c4-case__copy>p:last-child{color:rgba(255,255,255,.85)}
.c4-case__buttons{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:clamp(24px,3vw,40px);border-top:1px solid rgba(255,255,255,.2)}
.c4-case__buttons a{display:grid;gap:6px;padding:22px clamp(22px,3vw,40px);border-left:1px solid rgba(255,255,255,.2);border-top:3px solid transparent;margin-top:-1px;transition:background .25s,border-color .25s}
.c4-case__buttons a:first-child{border-left:0}
.c4-case__buttons small{font-size:13px;color:rgba(255,255,255,.7)}
.c4-case__buttons span{display:flex;justify-content:space-between;align-items:center;gap:12px;font:600 clamp(17px,1.4vw,21px)/1.25 var(--head)}
.c4-case__buttons a.is-active{border-top-color:#a99ff0;background:rgba(255,255,255,.06)}
.c4-case__buttons a:hover{background:rgba(255,255,255,.1)}

/* Testimonials: three cards */
.c4-quotes{padding-block:calc(var(--gap) * .7) calc(var(--gap) * .5)}
.c4-quotes__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.c4-quote{display:flex;flex-direction:column;gap:18px;padding:clamp(24px,2.6vw,36px);border:1px solid var(--line);border-radius:var(--r);background:#fff}
.c4-quote__mark{color:var(--brand)}
.c4-quote blockquote{flex:1;font-size:17.5px;line-height:1.65;color:var(--ink)}
.c4-quote figcaption{display:grid;gap:2px;padding-top:18px;border-top:1px solid var(--line)}
.c4-quote figcaption strong{font:600 16px/1.3 var(--head);color:var(--ink)}
.c4-quote figcaption span{font-size:14px;color:var(--muted)}

/* FAQ */
.c4-faq{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(28px,5vw,72px);padding-block:calc(var(--gap) * .5)}
.c4-faq__aside{display:grid;gap:16px;align-content:start;position:sticky;top:100px;align-self:start}
.c4-faq__card{display:grid;gap:12px;justify-items:start;margin-top:16px;padding:clamp(24px,2.4vw,32px);border-radius:var(--r);background:var(--brand);color:#e8e5ff}
.c4-faq__card h3{color:#fff;font-size:22px}
.c4-faq__card .c4-btn{margin-top:6px}
.c4-faq__list{border-top:1px solid var(--line)}
.c4-faq details{border-bottom:1px solid var(--line)}
.c4-faq summary{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 0;font:600 clamp(16px,1.3vw,19px)/1.4 var(--head);color:var(--ink);transition:color .25s}
.c4-faq summary:hover{color:var(--brand)}
.c4-faq summary i{position:relative;flex:none;width:28px;height:28px;border-radius:50%;border:1.5px solid var(--line);transition:background .25s,border-color .25s,color .25s}
.c4-faq summary i::before,.c4-faq summary i::after{content:"";position:absolute;left:8px;top:12px;width:9px;height:1.5px;background:currentColor;transition:transform .3s}
.c4-faq summary i::after{transform:rotate(90deg)}
.c4-faq details[open] summary i{background:var(--brand);border-color:var(--brand);color:#fff}
.c4-faq details[open] summary i::after{transform:rotate(0)}
.c4-faq details>div p{padding:0 48px 22px 0;color:var(--muted)}

/* CTA */
.c4-cta{padding-block:calc(var(--gap) * .5) var(--gap)}
.c4-cta__panel{position:relative;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:28px;min-height:420px;overflow:hidden;padding:clamp(32px,5vw,72px);border-radius:var(--r);background:var(--navy);color:#fff}
.c4-cta__shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(70,61,134,.95) 0%,rgba(15,26,48,.75) 55%,rgba(15,26,48,.4) 100%)}
.c4-cta__copy{position:relative;display:grid;gap:16px;max-width:640px}
.c4-cta__copy h2{color:#fff;font-size:clamp(32px,3.8vw,56px)}
.c4-cta__copy>p:last-child{color:rgba(255,255,255,.85)}
.c4-cta__actions{position:relative}

/* Footer */
.cx-footer{padding:clamp(52px,6vw,80px) var(--pad) 84px;background:var(--navy);color:#c3c8d2}
.cx-footer__top{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:48px;max-width:1360px;margin-inline:auto}
.cx-footer__intro{display:grid;gap:16px;justify-items:start}
.cx-footer .cx-header__brand{color:#fff}
.cx-footer__intro p{max-width:380px;font-size:17px}
.cx-footer__mail{color:#fff;font-weight:600;border-bottom:1.5px solid var(--brand)}
.cx-footer__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cx-footer__cols div{display:grid;gap:10px;align-content:start;font-size:15px}
.cx-footer__cols h3{font:600 14px/1 var(--head);color:#fff;margin-bottom:8px}
.cx-footer__cols a:hover{color:#fff}
.cx-footer__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;max-width:1360px;margin:48px auto 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#8e96a5}
.cx-footer__bottom span:last-child{display:flex;gap:20px}
.cx-footer__word{display:none}

/* Responsive */
@media(max-width:1100px){
  .cx-header__nav,.cx-header__cta{display:none}
  .cx-header__toggle{display:flex}
  .cx-menu{position:fixed;inset:0;z-index:-1;display:flex;flex-direction:column;justify-content:center;gap:2px;padding:100px var(--pad) 40px;background:#fff;color:var(--ink);opacity:0;visibility:hidden;transition:opacity .3s,visibility 0s linear .3s}
  .cx-menu a{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--line);font:600 24px/1.2 var(--head)}
  .cx-menu small{font:700 12px/1 var(--head);color:var(--brand)}
  .cx-menu .cx-menu__cta{margin-top:20px;justify-content:center;border:0;border-radius:var(--r);background:var(--brand);color:#fff;font-size:16px}
  .cx-menu-open .cx-header{color:var(--ink)}
  .cx-menu-open .cx-header__brand img{filter:invert(1)}
  .cx-menu-open .cx-menu{opacity:1;visibility:visible;transition:opacity .3s}
  .cx-menu-open .cx-header__toggle span:first-child{transform:translateY(4px) rotate(45deg)}
  .cx-menu-open .cx-header__toggle span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}
  .c4-quick{grid-template-columns:repeat(2,minmax(0,1fr))}
  .c4-quick a:nth-child(3){border-left:0}
  .c4-quick a:nth-child(n+3){border-top:1px solid var(--line)}
  .c4-logos ul{grid-template-columns:repeat(4,minmax(0,1fr))}
  .c4-logos li:nth-child(5){border-left:0}
  .c4-logos li:nth-child(n+5){border-top:1px solid var(--line)}
  .c4-services__grid{grid-template-columns:1fr}
  .c4-quotes__grid{grid-template-columns:1fr}
  .c4-faq{grid-template-columns:1fr}
  .c4-faq__aside{position:static}
  .c4-reel__chapters{grid-template-columns:1fr 1fr}
  .c4-reel__chapters button:nth-child(3){border-left:0}
  .c4-reel__chapters button:nth-child(n+3){border-top:1px solid var(--line)}
  .cx-footer__top{grid-template-columns:1fr}
}
@media(max-width:700px){
  .c4-hero__inner{padding-bottom:120px}
  .c4-quick{grid-template-columns:1fr;margin-inline:var(--pad)}
  .c4-quick a{border-left:0;border-top:1px solid var(--line);padding:18px 20px}
  .c4-quick a:first-child{border-top:0}
  .c4-logos ul{grid-template-columns:repeat(2,minmax(0,1fr))}
  .c4-logos li:nth-child(odd){border-left:0}
  .c4-logos li:nth-child(n+3){border-top:1px solid var(--line)}
  .c4-svc{grid-template-columns:1fr}
  .c4-svc__media{min-height:0;aspect-ratio:16/10}
  .c4-work__grid{grid-template-columns:1fr}
  .c4-reel__frame{aspect-ratio:4/5;max-height:none}
  .c4-reel__chapters{grid-template-columns:1fr}
  .c4-reel__chapters button{border-left:0;border-top:1px solid var(--line)}
  .c4-reel__chapters button:first-child{border-top:0}
  .c4-case__frame{min-height:780px}
  .c4-case__buttons{grid-template-columns:1fr}
  .c4-case__buttons a{border-left:0;border-top:1px solid rgba(255,255,255,.2)}
  .cx-footer__cols{grid-template-columns:1fr 1fr}
}