/* ---------- Tokens ---------- */
:root{
  --graphite:#262B30;
  --ink:#1A1E22;
  --slate:#5F6B74;
  --steel:#D9DEE2;
  --paper:#F3F4F5;
  --white:#FFFFFF;
  --orange:#E6701B;
  --orange-deep:#C85E12;
  --duct:#8A949B;
  --bg:var(--paper);
  --surface:var(--white);
  --text:var(--ink);
  --muted:var(--slate);
  --rule:var(--steel);
  --max:1200px;
  --gut:clamp(16px,4vw,48px);
  --fh:'Archivo',system-ui,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#1B1F23; --surface:#24292E; --text:#EEF0F2; --muted:#A4ADB4; --rule:#353C43;
    --graphite:#111417; --steel:#353C43; --duct:#5F6B74;
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--fh);font-size:17px;line-height:1.55;font-variation-settings:"wdth" 100;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{margin:0;line-height:1.05;letter-spacing:-.01em;font-variation-settings:"wdth" 118;font-weight:800}
h1{font-size:clamp(40px,6vw,76px)}
h2{font-size:clamp(28px,3.6vw,44px)}
h3{font-size:clamp(20px,2vw,24px)}
h4{font-size:17px;font-variation-settings:"wdth" 112}
p{margin:0 0 1em;max-width:62ch}
a{color:inherit}
img,svg{display:block;max-width:100%}
button{font:inherit;cursor:pointer}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gut)}
.skip{position:absolute;left:-999px;top:8px;background:var(--orange);color:#fff;padding:8px 12px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---------- Header ---------- */
.topbar{background:var(--graphite);color:#C9D0D6;font-size:14px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;min-height:36px;gap:16px}
.topbar a{text-decoration:none;color:#fff}
.topbar a:hover{text-decoration:underline}
.topbar .kt{display:flex;align-items:center;gap:8px}
.topbar .kt b{color:var(--orange);font-weight:700}
header.site{background:var(--surface);border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:50}
header.site .wrap{display:flex;align-items:center;gap:24px;min-height:76px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:800;font-variation-settings:"wdth" 118;font-size:22px;letter-spacing:-.02em}
.logo .mark{width:44px;height:44px;background:var(--graphite);display:grid;place-items:center}
.logo .mark span{display:block;width:26px;height:5px;background:var(--orange);box-shadow:0 -9px 0 #fff,0 9px 0 #fff}
.logo small{display:block;font-size:11px;font-weight:500;letter-spacing:.04em;color:var(--muted);font-variation-settings:"wdth" 100;margin-top:2px}
nav#nav{display:flex;gap:4px;margin-left:auto;align-items:center}
nav#nav a{text-decoration:none;padding:10px 10px;font-weight:500;font-size:15px;white-space:nowrap;border-bottom:3px solid transparent;position:relative}
nav#nav a[aria-current="page"]{border-bottom-color:var(--orange)}
nav#nav a:hover{color:var(--orange-deep)}
.basket{display:inline-flex;align-items:center;gap:8px;background:var(--graphite);color:#fff;text-decoration:none;padding:10px 14px;font-weight:600;font-size:15px;margin-left:8px}
.basket .n{background:var(--orange);color:#fff;min-width:22px;height:22px;border-radius:11px;display:grid;place-items:center;font-size:13px;padding:0 6px}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--rule);padding:8px 12px;font-weight:600}
@media (max-width:900px){
  nav#nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--surface);flex-direction:column;align-items:stretch;padding:8px var(--gut) 16px;border-bottom:1px solid var(--rule);box-shadow:0 20px 30px -20px rgba(0,0,0,.3)}
  nav#nav.open{display:flex}
  nav#nav a{border-bottom:1px solid var(--rule);padding:14px 0}
  nav#nav a[aria-current="page"]{border-left:4px solid var(--orange);padding-left:12px}
  .basket{margin:12px 0 0}
  .menu-btn{display:block}
  .topbar .hide-m{display:none}
}

/* ---------- Pages ---------- */
.section{padding:clamp(48px,7vw,96px) 0}
.section.tight{padding:clamp(32px,5vw,56px) 0}
.section + .section{border-top:1px solid var(--rule)}
.lede{font-size:clamp(18px,1.6vw,21px);color:var(--muted);max-width:56ch}
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--orange);color:#fff;text-decoration:none;padding:14px 22px;font-weight:700;border:0;letter-spacing:.01em}
.btn:hover{background:var(--orange-deep)}
.btn.ghost{background:transparent;color:var(--text);border:2px solid var(--text);padding:12px 20px}
.btn.ghost:hover{border-color:var(--orange);color:var(--orange-deep);background:transparent}
.btn.dark{background:var(--graphite)}
.btn.dark:hover{background:#000}
.btns{display:flex;flex-wrap:wrap;gap:12px}
.page-head{padding:clamp(40px,6vw,72px) 0 clamp(28px,4vw,48px)}
.page-head .crumb{color:var(--muted);font-size:14px;margin-bottom:14px}
.page-head .crumb a{text-decoration:none}
.page-head .crumb a:hover{text-decoration:underline}
.page-head h1{font-size:clamp(36px,5vw,60px);margin-bottom:16px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--surface);border-bottom:1px solid var(--rule)}
.hero .wrap{display:grid;grid-template-columns:1.15fr 1fr;gap:clamp(32px,5vw,72px);padding-top:clamp(48px,7vw,96px);padding-bottom:140px;align-items:start}
.hero h1{margin-bottom:22px}
.hero .lede{margin-bottom:30px}
.feature{border:1px solid var(--rule);background:var(--bg);padding:28px;position:relative}
.feature .tag{display:inline-block;background:var(--orange);color:#fff;font-weight:700;font-size:13px;padding:4px 10px;margin-bottom:18px}
.feature h2{font-size:clamp(34px,4vw,56px);line-height:.95;margin-bottom:10px}
.feature p{color:var(--muted);margin-bottom:22px}
.feature .mini{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--rule);border:1px solid var(--rule);margin-bottom:22px}
.feature .mini div{background:var(--surface);padding:12px 12px 10px}
.feature .mini b{display:block;font-size:22px;font-variation-settings:"wdth" 112;font-weight:800;line-height:1}
.feature .mini span{font-size:12px;color:var(--muted)}
.feature .art{position:absolute;right:20px;top:18px;width:96px;opacity:.9}
/* Duct + fibre: the one piece of motion */
.duct{position:absolute;left:0;right:0;bottom:48px;height:40px;pointer-events:none}
.duct svg{width:100%;height:100%;overflow:visible}
.duct .tube{stroke:var(--duct);stroke-width:34;fill:none;opacity:.45}
.duct .tube-edge{stroke:var(--duct);stroke-width:1.5;fill:none;opacity:.6}
.duct .fibre{stroke:var(--orange);stroke-width:5;fill:none;stroke-linecap:round;stroke-dasharray:var(--len,2000);stroke-dashoffset:var(--len,2000)}
.duct.draw .fibre{animation:blow 2.4s cubic-bezier(.3,.7,.3,1) forwards}
@keyframes blow{to{stroke-dashoffset:0}}
.duct .head{fill:var(--orange);offset-path:path(var(--p));offset-distance:0%;opacity:0}
.duct.draw .head{animation:head 2.4s cubic-bezier(.3,.7,.3,1) forwards}
@keyframes head{0%{offset-distance:0%;opacity:1}99%{opacity:1}100%{offset-distance:100%;opacity:0}}
.speed{position:absolute;right:var(--gut);bottom:14px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.speed b{font-size:20px;font-variation-settings:"wdth" 112;color:var(--text);font-weight:800}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr;padding-bottom:120px}.feature .art{width:70px}}

/* ---------- Ranges ---------- */
.ranges{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--rule);border:1px solid var(--rule)}
.range{background:var(--surface);padding:28px 24px 24px;text-decoration:none;display:flex;flex-direction:column;gap:14px;min-height:260px;position:relative}
.range:hover{background:var(--bg)}
.range:hover h3{color:var(--orange-deep)}
.range svg{width:56px;height:56px;stroke:var(--text);stroke-width:2.2;fill:none;stroke-linejoin:round;stroke-linecap:round}
.range svg .o{stroke:var(--orange)}
.range p{color:var(--muted);font-size:15px;margin:0;flex:1}
.range .go{font-weight:700;font-size:14px}
@media (max-width:900px){.ranges{grid-template-columns:1fr 1fr}}
@media (max-width:540px){.ranges{grid-template-columns:1fr}.range{min-height:0}}

/* ---------- Facts band ---------- */
.band{background:var(--graphite);color:#fff}
.band .wrap{display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(32px,5vw,80px);padding-top:clamp(48px,7vw,88px);padding-bottom:clamp(48px,7vw,88px)}
.band h2{margin-bottom:18px}
.band p{color:#C9D0D6}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#3A4148;border:1px solid #3A4148;align-self:start}
.facts div{background:var(--graphite);padding:22px 20px}
.facts b{display:block;white-space:nowrap;font-size:clamp(30px,3vw,42px);font-variation-settings:"wdth" 118;font-weight:800;line-height:1;color:var(--orange);margin-bottom:6px}
.facts span{font-size:14px;color:#C9D0D6}
@media (max-width:900px){.band .wrap{grid-template-columns:1fr}}

/* ---------- Catalogue list / product listing ---------- */
.list{border-top:2px solid var(--text)}
.row{display:grid;grid-template-columns:120px 1.1fr 2fr auto;gap:20px;align-items:center;padding:18px 0;border-bottom:1px solid var(--rule)}
.row .code{font-variation-settings:"wdth" 112;font-weight:700;color:var(--muted);font-size:14px;letter-spacing:.02em}
.row h3{font-size:19px}
.row h3 a{text-decoration:none}
.row h3 a:hover{color:var(--orange-deep)}
.row p{margin:0;color:var(--muted);font-size:15px;max-width:none}
.add{background:none;border:2px solid var(--text);padding:8px 14px;font-weight:700;font-size:14px;white-space:nowrap}
.add:hover{border-color:var(--orange);color:var(--orange-deep)}
.add.in{background:var(--graphite);color:#fff;border-color:var(--graphite)}
.cat-row{grid-template-columns:1fr auto}
@media (max-width:900px){.row{grid-template-columns:1fr auto;gap:8px 16px}.row .code{grid-column:1/-1}.row p{grid-column:1/-1}.cat-row .code{grid-column:auto}}
.side{display:grid;grid-template-columns:260px 1fr;gap:clamp(32px,5vw,72px)}
.side nav{position:sticky;top:96px;align-self:start}
.side nav a{display:block;text-decoration:none;padding:10px 0 10px 14px;border-left:3px solid var(--rule);font-size:15px;color:var(--muted)}
.side nav a[aria-current]{border-left-color:var(--orange);color:var(--text);font-weight:600}
.side nav a:hover{color:var(--text)}
.side h2{margin:0 0 6px;scroll-margin-top:100px}
.group + .group{margin-top:48px}
@media (max-width:900px){.side{grid-template-columns:1fr}.side nav{position:static;display:flex;flex-wrap:wrap;gap:8px}.side nav a{border:1px solid var(--rule);padding:8px 12px}.side nav a[aria-current]{border-color:var(--orange)}}

/* ---------- Product page ---------- */
.product{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,72px);align-items:start}
.gallery{background:var(--surface);border:1px solid var(--rule);aspect-ratio:1;display:grid;place-items:center;position:relative}
.gallery svg{width:60%;stroke:var(--text);stroke-width:2;fill:none;stroke-linejoin:round;stroke-linecap:round}
.gallery svg .o{stroke:var(--orange)}
.gallery .note{position:absolute;left:14px;bottom:12px;font-size:12px;color:var(--muted)}
.thumbs{display:flex;gap:8px;margin-top:8px}
.thumbs span{width:64px;height:64px;border:1px solid var(--rule);background:var(--surface)}
.thumbs span:first-child{border-color:var(--orange)}
.plate{border:2px solid var(--text);background:var(--surface);margin:28px 0}
.plate .ph{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:2px solid var(--text);font-weight:800;font-variation-settings:"wdth" 118;font-size:15px}
.plate .ph span{font-weight:500;font-variation-settings:"wdth" 100;color:var(--muted);font-size:13px}
.plate dl{margin:0;display:grid;grid-template-columns:1fr 1.5fr}
.plate dt,.plate dd{margin:0;padding:10px 16px;border-bottom:1px solid var(--rule);font-size:15px}
.plate dt{color:var(--muted);border-right:1px solid var(--rule)}
.plate dd{font-weight:600}
.plate dt:nth-last-of-type(1),.plate dd:last-child{border-bottom:0}
.qty{display:inline-flex;align-items:center;border:2px solid var(--text)}
.qty button{background:none;border:0;width:40px;height:46px;font-size:20px;font-weight:600}
.qty input[type=text]{width:52px;text-align:center;border:0;border-left:2px solid var(--text);border-right:2px solid var(--text);height:46px;font:inherit;font-weight:700;font-size:17px;background:var(--surface);color:var(--text)}
.warn{border-left:4px solid var(--orange);padding:12px 16px;background:var(--surface);font-size:15px;margin-top:28px}
.links{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:15px;margin-top:20px}
.links a{color:var(--text)}
@media (max-width:900px){.product{grid-template-columns:1fr}}

/* ---------- About / history ---------- */
.timeline{border-left:2px solid var(--text);margin-left:60px;padding-left:36px;position:relative}
.timeline > div{position:relative;padding-bottom:36px}
.timeline > div:last-child{padding-bottom:0}
.timeline b{position:absolute;left:-98px;top:2px;width:52px;text-align:right;font-variation-settings:"wdth" 118;font-weight:800;font-size:19px;color:var(--orange)}
.timeline b::after{content:"";position:absolute;right:-43px;top:7px;width:10px;height:10px;background:var(--text)}
.timeline h3{margin-bottom:6px}
.timeline p{color:var(--muted);margin:0}
.two{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,80px)}
@media (max-width:900px){.two{grid-template-columns:1fr}.timeline{margin-left:0;padding-left:0;border-left:0}.timeline b{position:static;display:block;text-align:left;width:auto;margin-bottom:4px}.timeline b::after{display:none}}
.cert{display:flex;gap:18px;align-items:center;border:1px solid var(--rule);background:var(--surface);padding:20px}
.cert .badge{width:64px;height:64px;border:3px solid var(--text);display:grid;place-items:center;font-weight:800;font-variation-settings:"wdth" 118;font-size:13px;text-align:center;line-height:1;flex:none}
.cert p{margin:0;font-size:15px;color:var(--muted)}
.cert b{display:block;color:var(--text);margin-bottom:2px}

/* ---------- How to buy ---------- */
.finder{background:var(--surface);border:1px solid var(--rule);padding:28px;display:grid;grid-template-columns:1fr auto;gap:16px;align-items:end}
.finder label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
select,input[type=text],input[type=email],input[type=tel],textarea{width:100%;font:inherit;padding:12px 14px;border:2px solid var(--rule);background:var(--surface);color:var(--text)}
select:focus,input:focus,textarea:focus{border-color:var(--text);outline:0}
#buy-out{margin-top:20px;padding:20px 24px;border-left:4px solid var(--orange);background:var(--surface);display:none}
#buy-out.show{display:block}
#buy-out h3{margin-bottom:6px}
#buy-out p{margin:0;color:var(--muted)}
.regions{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--rule);border:1px solid var(--rule);margin-top:48px}
.regions div{background:var(--surface);padding:22px}
.regions h4{margin-bottom:10px}
.regions ul{margin:0;padding:0;list-style:none;font-size:15px;color:var(--muted)}
.regions li{padding:4px 0;border-bottom:1px solid var(--rule)}
.regions li:last-child{border-bottom:0}
@media (max-width:900px){.regions{grid-template-columns:1fr 1fr}.finder{grid-template-columns:1fr}}
@media (max-width:540px){.regions{grid-template-columns:1fr}}

/* ---------- Catalogues ---------- */
.cats{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.cat{text-decoration:none;display:flex;flex-direction:column}
.cat .cover{aspect-ratio:3/4;background:var(--graphite);color:#fff;padding:18px;display:flex;flex-direction:column;justify-content:flex-end;position:relative;border-top:6px solid var(--orange)}
.cat .cover b{font-variation-settings:"wdth" 118;font-size:22px;line-height:1;font-weight:800}
.cat .cover small{color:#C9D0D6;font-size:12px;margin-top:6px}
.cat .cover::before{content:"";position:absolute;left:18px;top:18px;width:28px;height:5px;background:var(--orange);box-shadow:0 9px 0 #fff,0 18px 0 #fff}
.cat span{margin-top:10px;font-size:14px;font-weight:600}
.cat:hover .cover{background:#000}
@media (max-width:900px){.cats{grid-template-columns:repeat(3,1fr)}}
@media (max-width:540px){.cats{grid-template-columns:1fr 1fr}}

/* ---------- Contact / enquiry ---------- */
.contact{display:grid;grid-template-columns:1fr 1.3fr;gap:clamp(32px,5vw,80px);align-items:start}
.card{background:var(--surface);border:1px solid var(--rule);padding:24px}
.card + .card{margin-top:16px}
.card h3{margin-bottom:12px}
.card p{margin:0;color:var(--muted);font-size:15px}
.card p + p{margin-top:8px}
.card a{color:var(--text);text-decoration:none;font-weight:600}
.card a:hover{text-decoration:underline}
.basket-list{list-style:none;margin:0;padding:0}
.basket-list li{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--rule);font-size:15px}
.basket-list li:last-child{border-bottom:0}
.basket-list .rm{background:none;border:0;color:var(--muted);text-decoration:underline;font-size:13px;padding:0}
.basket-list .empty{color:var(--muted);justify-content:flex-start}
form.enq{display:grid;grid-template-columns:1fr 1fr;gap:16px}
form.enq .full{grid-column:1/-1}
form.enq label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
form.enq .err{display:none;color:var(--orange-deep);font-size:13px;margin-top:4px}
form.enq .bad .err{display:block}
form.enq .bad input,form.enq .bad textarea{border-color:var(--orange)}
.seg{display:flex;border:2px solid var(--text);width:max-content;max-width:100%}
.seg label{margin:0;position:relative}
.seg input{position:absolute;opacity:0;inset:0}
.seg span{display:block;padding:10px 16px;font-weight:600;font-size:14px;cursor:pointer}
.seg input:checked + span{background:var(--graphite);color:#fff}
.seg input:focus-visible + span{outline:3px solid var(--orange);outline-offset:-3px}
#sent{display:none;background:var(--surface);border-left:4px solid var(--orange);padding:20px 24px}
#sent.show{display:block}
@media (max-width:900px){.contact{grid-template-columns:1fr}form.enq{grid-template-columns:1fr}}

/* ---------- CTA band + footer ---------- */
.cta{border-top:1px solid var(--rule);background:var(--surface)}
.cta .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;padding-top:40px;padding-bottom:40px}
.cta h2{font-size:clamp(24px,3vw,34px)}
.cta p{margin:6px 0 0;color:var(--muted)}
footer{background:var(--graphite);color:#C9D0D6;font-size:15px}
footer .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-top:56px;padding-bottom:28px}
footer h4{color:#fff;margin-bottom:12px}
footer a{color:#fff;text-decoration:none}
footer a:hover{text-decoration:underline}
footer ul{list-style:none;margin:0;padding:0}
footer li{padding:3px 0}
footer .logo{color:#fff;margin-bottom:14px}
footer .logo .mark{background:#fff}
footer .logo .mark span{box-shadow:0 -9px 0 var(--graphite),0 9px 0 var(--graphite)}
footer .logo small{color:#C9D0D6}
footer .legal{border-top:1px solid #3A4148}
footer .legal .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:18px var(--gut);font-size:13px}
@media (max-width:900px){footer .wrap{grid-template-columns:1fr 1fr}}
@media (max-width:540px){footer .wrap{grid-template-columns:1fr}}