*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--iit-paper);color:var(--iit-ink);font-family:var(--iit-font-text);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--iit-navy);text-decoration:none}
a:hover{color:var(--iit-amber)}
img{display:block;max-width:100%}
.wrap{max-width:1160px;margin:0 auto;padding:0 32px}
.kick{font-family:var(--iit-font-mono);font-size:12px;letter-spacing:.09em;text-transform:uppercase;color:var(--iit-steel)}
.kick.amber{color:var(--iit-amber)}
.rule{height:5px;width:64px;background:var(--iit-amber)}
.rule.sm{height:4px;width:54px}
h1,h2,h3{font-family:var(--iit-font-display);letter-spacing:-.015em;color:var(--iit-navy)}
h2{font-weight:800;font-size:clamp(28px,4vw,42px);line-height:1.06}
h3{font-weight:700;font-size:20px}
p{max-width:64ch}
section{padding:clamp(56px,8vw,92px) 0}

.hdr{position:sticky;top:0;z-index:50;background:var(--iit-deep);border-bottom:1px solid var(--iit-line-navy)}
.hdr .in{display:flex;align-items:center;justify-content:space-between;height:72px}
.hdr img{width:140px;height:auto}
.nav{display:flex;align-items:center;gap:28px}
.nav a{font-size:14px;font-weight:500;color:var(--iit-on-navy-3)}
.nav a:hover{color:#fff}
.nav a.active{color:#fff;border-bottom:2px solid var(--iit-amber);padding-bottom:4px}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--iit-font-display);font-weight:600;font-size:14px;padding:11px 20px;border:1px solid transparent;cursor:pointer;transition:background var(--iit-dur) var(--iit-ease),color var(--iit-dur) var(--iit-ease)}
.btn-amber{background:var(--iit-amber);color:var(--iit-deep)}
.btn-amber:hover{background:#d9820b;color:var(--iit-deep)}
.btn-ghost{background:transparent;color:#fff;border-color:var(--iit-stroke-navy-soft)}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff}
.btn-navy{background:var(--iit-navy);color:#fff}
.btn-navy:hover{background:var(--iit-deep);color:#fff}

.hero{position:relative;background:var(--iit-navy);overflow:hidden}
.hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero .tint{position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,24,47,.96) 0%,rgba(4,24,47,.90) 45%,rgba(4,24,47,.72) 100%)}
.hero .in{position:relative;padding:clamp(64px,10vw,116px) 32px}
.hero h1{color:#fff;font-weight:800;font-size:clamp(34px,5.5vw,60px);line-height:1.03;letter-spacing:-.02em;max-width:17ch;margin-top:18px}
.hero p{color:var(--iit-on-navy-2);font-size:clamp(16px,2vw,19px);max-width:54ch;margin-top:6px}
.hero .cta{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}

.page-head{position:relative;padding:0;background:var(--iit-navy);overflow:hidden}
.page-head img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.page-head .tint{position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,24,47,.96) 0%,rgba(4,24,47,.90) 45%,rgba(4,24,47,.72) 100%)}
.page-head .in{position:relative;padding:clamp(48px,7vw,84px) 32px}
.page-head h1{color:#fff;font-weight:800;font-size:clamp(30px,4.6vw,50px);line-height:1.04;letter-spacing:-.02em;max-width:20ch;margin-top:16px}
.page-head p{color:var(--iit-on-navy-2);font-size:17px;max-width:56ch;margin-top:18px}

.strip{background:var(--iit-deep);border-top:1px solid var(--iit-line-dark)}
.strip .in{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--iit-line-dark)}
.strip .cell{background:var(--iit-deep);padding:26px 24px}
.strip .n{font-family:var(--iit-font-logo);font-size:26px;color:var(--iit-amber);line-height:1}
.strip .l{color:var(--iit-on-navy-2);font-size:14px;margin-top:12px;font-weight:500;font-family:var(--iit-font-display)}

.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:36px}
.card{background:#fff;border:1px solid var(--iit-line);padding:30px;display:flex;flex-direction:column}
.card.acc{border-top:5px solid var(--iit-amber)}
.card .tag{font-family:var(--iit-font-mono);font-size:11px;letter-spacing:.08em;color:var(--iit-steel);text-transform:uppercase}
.card h3{margin:10px 0 8px;font-size:21px}
.card p{font-size:15.5px;color:var(--iit-ink-body);flex:1}

.split{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:start}
.split.rev{grid-template-columns:.85fr 1.15fr}
.split .media{align-self:stretch;min-height:340px;border:1px solid var(--iit-line);border-top:5px solid var(--iit-amber);overflow:hidden}
.split .media img{display:block;width:100%;height:100%;object-fit:cover}
.caps{list-style:none;margin-top:24px;display:grid;gap:2px}
.caps li{position:relative;padding:14px 0 14px 26px;border-bottom:1px solid var(--iit-line-3);font-size:15.5px;color:var(--iit-ink-body);line-height:1.5}
.caps li:before{content:"";position:absolute;left:0;top:19px;width:9px;height:9px;background:var(--iit-amber)}
.caps li b{font-family:var(--iit-font-display);font-weight:700;color:var(--iit-navy);display:block;font-size:15px;margin-bottom:2px}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--iit-line);margin-top:36px;border:1px solid var(--iit-line)}
.step{background:#fff;padding:26px 22px}
.step .n{font-family:var(--iit-font-logo);font-size:22px;color:var(--iit-amber)}
.step h3{font-size:17px;margin:14px 0 8px}
.step p{font-size:14px;color:var(--iit-steel)}

.customs{background:var(--iit-navy)}
.customs h2,.customs .kick{color:#fff}
.customs .kick{color:var(--iit-amber)}
.customs p{color:var(--iit-on-navy-2)}
.spec{width:100%;border-collapse:collapse;margin-top:34px}
.spec th{background:var(--iit-amber);color:var(--iit-deep);text-align:left;padding:13px 16px;font-family:var(--iit-font-display);font-weight:600;font-size:13px}
.spec td{padding:15px 16px;border-bottom:1px solid var(--iit-line-navy);vertical-align:top;color:var(--iit-on-navy-1);font-size:15px}
.spec td.code{font-family:var(--iit-font-mono);white-space:nowrap;color:#fff;font-weight:500}
.spec tr:hover td{background:rgba(255,255,255,.03)}

.why{background:#fff;border-top:1px solid var(--iit-line);border-bottom:1px solid var(--iit-line)}
.cols3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:36px}
.cols3>div{display:grid;grid-template-rows:subgrid;grid-row:span 3;row-gap:0}
.cols3 .q{background:var(--iit-paper);border-left:4px solid var(--iit-amber);padding:16px 18px;font-family:var(--iit-font-mono);font-size:13.5px;line-height:1.6;color:var(--iit-navy);margin-top:14px}
.cols3 p{font-size:15px;color:var(--iit-steel)}

/* two dark sections running together need less air than a colour change does */
.tight-top{padding-top:clamp(20px,3vw,36px)}
.showcase.tight-top .in{padding-top:clamp(20px,3vw,36px)}
.slab{background:var(--iit-deep);color:#fff;border-left:8px solid var(--iit-amber);padding:clamp(30px,5vw,52px);max-width:none}
.slab .big{font-family:var(--iit-font-display);font-weight:800;font-size:clamp(24px,3.4vw,36px);line-height:1.15;letter-spacing:-.015em;max-width:26ch}
.slab .note{color:var(--iit-on-navy-3);font-size:16px;margin-top:20px;max-width:60ch}

.imgband{display:block;width:100%;height:clamp(280px,38vw,460px);object-fit:cover;border-top:1px solid var(--iit-line-dark);border-bottom:1px solid var(--iit-line-dark)}

.band{position:relative;padding:0;background:var(--iit-navy);overflow:hidden;border-top:1px solid var(--iit-line-dark);border-bottom:1px solid var(--iit-line-dark)}
.band img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.band .tint{position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,24,47,.96) 0%,rgba(4,24,47,.90) 45%,rgba(4,24,47,.72) 100%)}
.band .in{position:relative;padding:clamp(56px,8vw,92px) 32px}
.band h2{color:#fff}
.band p{color:var(--iit-on-navy-2);font-size:17px;max-width:52ch;margin-top:2px}

.showcase{padding:0;background:var(--iit-navy);border-top:1px solid var(--iit-line-dark);border-bottom:1px solid var(--iit-line-dark)}
.showcase .in{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:clamp(44px,6vw,72px) 32px}
.showcase.rev .in{grid-template-columns:.95fr 1.05fr}
.showcase.rev .fig{order:-1}
.showcase .fig{background:var(--iit-deep);border:1px solid var(--iit-line-navy);border-top:5px solid var(--iit-amber);overflow:hidden}
.showcase .fig img{display:block;width:100%;height:clamp(320px,34vw,440px);object-fit:cover}
.showcase h2{color:#fff}
.showcase p{color:var(--iit-on-navy-2);font-size:16px;margin-top:16px}
.showcase .cap{font-family:var(--iit-font-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--iit-on-navy-5);margin-top:18px}
.showcase.light{background:#fff;border-top:1px solid var(--iit-line);border-bottom:1px solid var(--iit-line)}
.showcase.light h2{color:var(--iit-navy)}
.showcase.light p{color:var(--iit-ink-body)}
.showcase.light .cap{color:var(--iit-steel)}
.showcase.light .fig{background:var(--iit-paper);border-color:var(--iit-line);border-top-color:var(--iit-amber)}
@media(max-width:900px){.showcase .in,.showcase.rev .in{grid-template-columns:1fr;gap:26px}.showcase.rev .fig{order:0}}

.contact .in{display:grid;grid-template-columns:1fr 1.15fr;gap:52px;align-items:start}
.form{background:#fff;border:1px solid var(--iit-line);padding:32px;display:grid;gap:18px}
.field label{display:block;font-family:var(--iit-font-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--iit-steel);margin-bottom:7px}
.field input,.field textarea,.field select{width:100%;padding:12px 14px;border:1px solid var(--iit-line);background:#fff;font-family:var(--iit-font-text);font-size:15px;color:var(--iit-navy);outline:none}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--iit-navy)}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form .foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.form .note{font-family:var(--iit-font-mono);font-size:11px;letter-spacing:.04em;color:var(--iit-steel);max-width:30ch;line-height:1.5}
.who b{display:block;font-family:var(--iit-font-display);font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--iit-navy)}
.who span{display:block;font-family:var(--iit-font-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--iit-steel);margin-top:5px}
.reach{font-family:var(--iit-font-mono);font-size:15px;line-height:2.2;color:var(--iit-navy);margin-top:18px}
.reach .lbl{color:var(--iit-steel);display:inline-block;width:22px}
.reach a{color:var(--iit-navy);font-weight:500}
.formerr{font-size:13.5px;line-height:1.5;color:var(--iit-fail);max-width:none;margin-top:2px}
.formerr a{color:var(--iit-fail);text-decoration:underline}
.sent{background:var(--iit-deep);color:#fff;border-left:6px solid var(--iit-amber);padding:34px;display:none}
.sent.on{display:block}
.sent .big{font-family:var(--iit-font-display);font-weight:700;font-size:24px}
.sent p{color:var(--iit-on-navy-3);margin-top:12px}
.tbd{font-family:var(--iit-font-mono);font-size:11px;color:var(--iit-fail);letter-spacing:.03em;text-transform:uppercase}

.catalogue{background:#fff;border-top:1px solid var(--iit-line)}
.cat-top{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:end}
.cat-search label{display:block;font-family:var(--iit-font-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--iit-steel);margin-bottom:8px}
.cat-search input{width:100%;padding:14px 16px;border:1px solid var(--iit-line);border-top:3px solid var(--iit-amber);background:#fff;font-family:var(--iit-font-text);font-size:16px;color:var(--iit-navy);outline:none}
.cat-search input:focus{border-color:var(--iit-navy);border-top-color:var(--iit-amber)}
.cat-count{font-family:var(--iit-font-mono);font-size:12px;letter-spacing:.04em;color:var(--iit-steel);margin-top:10px;min-height:1em}
.cat-index{display:flex;flex-wrap:wrap;gap:2px;margin-top:44px;border-top:1px solid var(--iit-line);border-bottom:1px solid var(--iit-line);padding:10px 0}
.cat-index a{font-family:var(--iit-font-mono);font-size:13px;font-weight:500;color:var(--iit-steel);padding:6px 11px;transition:color var(--iit-dur) var(--iit-ease),background var(--iit-dur) var(--iit-ease)}
.cat-index a:hover{color:var(--iit-navy);background:var(--iit-paper)}
.cat-group{padding-top:34px;margin-top:34px;border-top:1px solid var(--iit-line-3);scroll-margin-top:96px}
.cat-group:first-child{border-top:0;margin-top:0}
.cat-letter{font-family:var(--iit-font-logo);font-size:22px;color:var(--iit-amber);letter-spacing:0;margin-bottom:16px}
.cat-list{list-style:none;columns:3;column-gap:40px}
.cat-list li{break-inside:avoid;font-size:15px;line-height:1.45;color:var(--iit-ink-body);padding:8px 0 8px 16px;border-bottom:1px solid var(--iit-line-3);position:relative}
.cat-list li:before{content:"";position:absolute;left:0;top:15px;width:6px;height:6px;background:var(--iit-amber)}
.cat-none{margin-top:40px;padding:22px 24px;background:var(--iit-paper);border-left:4px solid var(--iit-amber);font-size:15.5px;color:var(--iit-ink-body);max-width:68ch}
@media(max-width:1000px){.cat-list{columns:2}}
@media(max-width:900px){.cat-top{grid-template-columns:1fr;gap:28px;align-items:start}}
@media(max-width:640px){.cat-list{columns:1}}

.ftr{background:var(--iit-deep);color:var(--iit-on-navy-3)}
.ftr .top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:52px 32px 34px}
.ftr img{width:200px}
.ftr p{font-size:13.5px;color:var(--iit-on-navy-4);margin-top:26px;max-width:32ch;line-height:1.6}
.ftr .statement{padding:4px 32px 30px}
.ftr .statement p{margin-top:0;max-width:none;font-size:14px}
.ftr .statement b{font-weight:600;color:var(--iit-on-navy-1)}
.ftr .col .kick{margin-bottom:14px}
.ftr .list{list-style:none;display:grid;gap:9px;margin-top:0}
.ftr .list li{font-family:var(--iit-font-mono);font-size:13px;line-height:1.5;color:var(--iit-on-navy-2)}
.ftr .list a{color:var(--iit-on-navy-2);transition:color var(--iit-dur) var(--iit-ease)}
.ftr .list a:hover{color:var(--iit-amber)}
.ftr .bar{border-top:1px solid var(--iit-line-dark);padding:14px 0}
.ftr .bar .in{display:flex;justify-content:space-between;font-family:var(--iit-font-mono);font-size:11px;letter-spacing:.06em;color:var(--iit-on-navy-6)}

@media(max-width:900px){
  .split,.split.rev,.contact .in{grid-template-columns:1fr;gap:32px}
  .split .media{min-height:260px;order:-1}
  .ftr .top{grid-template-columns:1fr 1fr}
  .strip .in,.steps{grid-template-columns:1fr 1fr}
  .cols3,.grid3{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav a:not(.btn){display:none}
  .f2{grid-template-columns:1fr}
  .ftr .top{grid-template-columns:1fr}
  .strip .in{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  .ftr .bar .in{flex-direction:column;gap:6px}
}