/* Alnaka Consultancy — engineering consultancy, London. Charcoal + Alnaka blue, generous whitespace. */
:root{
  color-scheme:light;
  --bg:#FFFFFF; --soft:#F3F5F7; --ink:#1C2228; --muted:#59636D; --line:#DEE3E8;
  --dark:#1E252C; --dark-2:#2A333C; --blue:#1F9BD7; --blue-dk:#137DB2; --white:#FFFFFF;
  --head:"Archivo", "Helvetica Neue", Arial, sans-serif;
  --body:"Public Sans", "Segoe UI", Helvetica, Arial, sans-serif;
  --gl:max(20px, env(safe-area-inset-left, 0px)); --gr:max(20px, env(safe-area-inset-right, 0px));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.65}
a{color:inherit}
p{margin:0}
img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px}
.wrap{max-width:1200px;margin:0 auto;padding-left:var(--gl);padding-right:var(--gr)}
h1,h2,h3{font-family:var(--head);margin:0;line-height:1.1;text-wrap:balance;letter-spacing:-.01em}
h2{font-size:clamp(28px,3.4vw,40px);font-weight:700;font-stretch:105%}
h3{font-size:20px;font-weight:700}
.kicker{display:inline-flex;align-items:center;gap:10px;font-family:var(--head);font-weight:600;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--blue-dk)}
.kicker::before{content:"";width:28px;height:2px;background:var(--blue)}
.lede{font-size:19px;color:var(--muted);max-width:62ch}
section{padding-block:clamp(64px,8vw,104px)}
.head{display:grid;gap:14px;margin-bottom:44px;max-width:760px}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--head);font-weight:600;font-size:15px;letter-spacing:.02em;text-decoration:none;padding:13px 22px;border-radius:2px;background:var(--blue);color:var(--white);border:2px solid var(--blue);transition:background .15s,border-color .15s,color .15s}
.btn:hover{background:var(--blue-dk);border-color:var(--blue-dk)}
.btn.ghost{background:transparent;color:var(--white);border-color:rgba(255,255,255,.6)}
.btn.ghost:hover{background:var(--white);color:var(--dark)}
.btn.dark{background:var(--dark);border-color:var(--dark)}
.btn.dark:hover{background:var(--dark-2);border-color:var(--dark-2)}
.link{font-family:var(--head);font-weight:600;color:var(--blue-dk);text-decoration:none}
.link:hover{text-decoration:underline}

/* top + header */
.top{background:var(--dark);color:#B9C3CC;font-size:14px}
.top .wrap{display:flex;flex-wrap:wrap;gap:6px 26px;justify-content:space-between;padding-block:8px}
.top a{text-decoration:none}.top a:hover{color:var(--white)}
.top .l{display:flex;flex-wrap:wrap;gap:6px 22px}
.hdr{position:sticky;top:0;z-index:20;background:var(--white);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;gap:24px;height:84px}
.logo img{height:58px;width:auto}
.menu{display:flex;list-style:none;margin:0 0 0 auto;padding:0;gap:6px}
.menu a{display:block;font-family:var(--head);font-weight:600;font-size:15px;text-decoration:none;color:var(--ink);padding:10px 12px;border-bottom:2px solid transparent}
.menu a:hover{color:var(--blue-dk)}
.menu a[aria-current="page"]{color:var(--blue-dk);border-bottom-color:var(--blue)}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);width:44px;height:44px;cursor:pointer}
.burger span{display:block;width:20px;height:2px;background:var(--ink);margin:4px auto}
@media (max-width:900px){
  .burger{display:block}
  .menu{display:none;position:absolute;top:84px;left:0;right:0;flex-direction:column;background:var(--white);border-bottom:1px solid var(--line);padding:8px var(--gr) 16px var(--gl)}
  .menu.open{display:flex}
}

/* hero */
.hero{background:var(--dark);color:var(--white);padding:0}
.hero .grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);min-height:clamp(460px,52vw,620px)}
.hero .copy{display:flex;flex-direction:column;justify-content:center;gap:22px;padding-block:56px;padding-right:48px;padding-left:max(var(--gl),calc((100vw - 1200px)/2 + 20px))}
.hero .kicker{color:#7FCBEF}.hero .kicker::before{background:#7FCBEF}
.hero h1{font-size:clamp(36px,4.4vw,60px);font-weight:700;font-stretch:108%;line-height:1.04}
.hero h1 em{font-style:normal;color:#5DBCEB}
.hero .sub{font-size:18px;color:#C9D2DA;max-width:50ch}
.hero .btns{display:flex;gap:12px;flex-wrap:wrap}
.hero .ph{position:relative;min-height:320px}
.hero .ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero .badge{position:absolute;left:24px;bottom:24px;background:rgba(30,37,44,.88);color:var(--white);padding:14px 18px;font-size:14px;max-width:300px;border-left:3px solid var(--blue)}
@media (max-width:900px){.hero .grid{grid-template-columns:1fr}.hero .copy{padding:48px var(--gr) 40px var(--gl)}}

/* page head */
.pagehead{background:var(--dark);color:var(--white);padding-block:60px 54px}
.pagehead .crumb{font-size:14px;color:#9AA6B1}.pagehead .crumb a{color:#C9D2DA;text-decoration:none}
.pagehead h1{font-size:clamp(34px,4.6vw,54px);font-weight:700;font-stretch:108%;margin-top:12px}
.pagehead p{color:#C9D2DA;font-size:18px;margin-top:14px;max-width:62ch}

/* cards & grids */
.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.card{border:1px solid var(--line);padding:28px 24px;display:flex;flex-direction:column;gap:12px;background:var(--white);transition:border-color .2s,box-shadow .2s}
.card:hover{border-color:var(--blue);box-shadow:0 12px 30px -20px rgba(20,40,60,.45)}
.card .n{font-family:var(--head);font-weight:700;color:var(--blue);font-size:14px;letter-spacing:.08em}
.card p{color:var(--muted);font-size:16px}
.card .link{margin-top:auto}
.cards.five{grid-template-columns:repeat(5,minmax(0,1fr))}
@media (max-width:1100px){.cards.five{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:700px){.cards.five{grid-template-columns:1fr}}
.punch{margin-top:20px;padding-left:16px;border-left:3px solid var(--blue);font-family:var(--head);font-weight:600;font-size:19px;color:var(--ink)}
@media (max-width:1000px){.cards{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.cards{grid-template-columns:1fr}}
.soft{background:var(--soft)}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;counter-reset:s}
.steps li{counter-increment:s;padding:20px 20px 0 0;border-top:2px solid var(--ink);position:relative;display:grid;gap:8px;align-content:start}
.steps li::before{content:counter(s,decimal-leading-zero);font-family:var(--head);font-weight:700;font-size:13px;color:var(--blue-dk)}
.steps b{font-family:var(--head);font-size:18px}
.steps span{color:var(--muted);font-size:15px;line-height:1.5}
@media (max-width:960px){.steps{grid-template-columns:1fr 1fr;row-gap:30px}}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,64px);align-items:center}
.split img{width:100%;aspect-ratio:4/3;object-fit:cover}
@media (max-width:900px){.split{grid-template-columns:1fr}}
.ticks{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:8px}
.ticks li{position:relative;padding-left:22px}
.ticks li::before{content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;background:var(--blue)}
.cols2{columns:2;column-gap:32px}.cols2 li{break-inside:avoid}
@media (max-width:600px){.cols2{columns:1}}
.logos{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:22px 36px;align-items:center}
.logos img{width:100%;max-width:140px;height:54px;object-fit:contain;margin:auto}
@media (max-width:800px){.logos{grid-template-columns:repeat(3,minmax(0,1fr))}}
.note{font-size:14px;color:var(--muted);margin-top:22px}
.band{background:var(--dark);color:var(--white)}
.band .wrap{display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;align-items:center;padding-block:52px}
.band h2{color:var(--white)}.band p{color:#C9D2DA;margin-top:8px}
.oem{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:40px;align-items:center}
.oem .pics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.oem .pics img{aspect-ratio:1/1;object-fit:contain;background:var(--white);border:1px solid var(--line);width:100%}
@media (max-width:900px){.oem{grid-template-columns:1fr}}

.divgrid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.div{display:flex;flex-direction:column;text-decoration:none;color:inherit;border:1px solid var(--line);transition:border-color .2s,box-shadow .2s}
.div:hover{border-color:var(--blue);box-shadow:0 14px 34px -22px rgba(20,40,60,.5)}
.div img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line)}
.div .t{padding:26px 28px 30px;display:grid;gap:10px}
.div .n{font-family:var(--head);font-weight:700;color:var(--blue);letter-spacing:.08em;font-size:14px}
.div h3{font-size:24px}.div p{color:var(--muted)}
@media (max-width:800px){.divgrid{grid-template-columns:1fr}}
.menu a{white-space:nowrap}
@media (max-width:1100px){.menu a{font-size:14px;padding:10px 8px}}

.exp{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:48px;align-items:center}
.facts2{display:grid;gap:0;border-left:3px solid var(--blue);background:var(--white)}
.facts2 div{padding:20px 26px;border-bottom:1px solid var(--line)}.facts2 div:last-child{border-bottom:0}
.facts2 b{display:block;font-family:var(--head);font-size:36px;line-height:1;color:var(--ink)}
.facts2 span{color:var(--muted);font-size:15px}
.refs-t{font-family:var(--head);font-weight:600;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:48px 0 22px;text-align:center}
@media (max-width:900px){.exp{grid-template-columns:1fr}}

/* services detail */
.sv{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(28px,4vw,56px);align-items:start;padding-block:56px;border-top:1px solid var(--line)}
.sv:first-of-type{border-top:0}
.sv img{width:100%;aspect-ratio:4/3;object-fit:cover;position:sticky;top:110px}
.sv h2{font-size:clamp(24px,2.6vw,32px)}
.sv p{color:var(--muted);margin-top:14px;max-width:66ch}
@media (max-width:900px){.sv{grid-template-columns:1fr}.sv img{position:static}}

/* products */
.prods{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.prod{border:1px solid var(--line);display:flex;flex-direction:column}
.prod img{aspect-ratio:4/3;object-fit:contain;background:var(--white);padding:14px;border-bottom:1px solid var(--line);width:100%}
.prod.photo img{object-fit:cover;padding:0}
.prod .t{padding:22px;display:grid;gap:8px}.prod p{color:var(--muted);font-size:16px}
@media (max-width:900px){.prods{grid-template-columns:1fr 1fr}}@media (max-width:560px){.prods{grid-template-columns:1fr}}
.inds{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.ind{background:var(--white);padding:24px;border-top:3px solid var(--blue)}
.ind ul{margin:10px 0 0;padding-left:18px;color:var(--muted)}
@media (max-width:900px){.inds{grid-template-columns:1fr 1fr}}

/* contact */
.offices{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.office{background:var(--soft);padding:32px;display:grid;gap:14px;align-content:start}
.office dt{font-family:var(--head);font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--blue-dk)}
.office dd{margin:2px 0 0;font-size:17px;user-select:all}
.office dl{margin:0;display:grid;gap:14px}
@media (max-width:800px){.offices{grid-template-columns:1fr}}

footer{background:#151A1F;color:#9AA6B1;font-size:15px}
footer .wrap{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:32px;padding-block:52px}
footer h4{font-family:var(--head);color:var(--white);font-size:16px;margin:0 0 12px}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
footer a{text-decoration:none}footer a:hover{color:var(--white)}
footer .copy{border-top:1px solid #262E36;font-size:13.5px}
footer .copy .wrap{display:block;padding-block:16px}
@media (max-width:800px){footer .wrap{grid-template-columns:1fr}}

@view-transition{navigation:auto}
.top{view-transition-name:top}.hdr{view-transition-name:hdr}
::view-transition-old(root){animation:vo .2s ease both}
::view-transition-new(root){animation:vi .4s cubic-bezier(.2,.7,.2,1) both}
@keyframes vo{to{opacity:0}}@keyframes vi{from{opacity:0;transform:translateY(12px)}}
@media (prefers-reduced-motion: reduce){::view-transition-old(root),::view-transition-new(root){animation:none}html{scroll-behavior:auto}}