/* ============================================================
   TRUSSMITH — Design System
   Industrial catalog aesthetic: paper, ink, brass, hairlines.
   ============================================================ */

:root{
  --ink:#14161A;
  --ink-2:#2B3038;
  --ink-3:#4A5058;
  --muted:#767C83;
  --paper:#F7F5F1;
  --paper-2:#EFEBE4;
  --paper-3:#E6E0D6;
  --white:#FFFFFF;
  --line:#DCD5C9;
  --line-2:#C9C1B2;
  --brass:#A9713F;
  --brass-lt:#C68A52;
  --brass-pale:#F0E4D6;
  --dark:#111317;
  --dark-2:#191C21;
  --dark-line:#2A2E35;

  --ff: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --fm: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --wrap:1240px;
  --gut:32px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper); color:var(--ink);
  font-family:var(--ff); font-size:16px; line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
::selection{background:var(--brass);color:#fff}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.narrow{max-width:900px;margin:0 auto}

/* ---------- type ---------- */
.eyebrow{
  font-family:var(--fm); font-size:11px; letter-spacing:.18em; text-transform:uppercase;
  color:var(--brass); font-weight:500;
}
.eyebrow.on-dark{color:var(--brass-lt)}
h1,h2,h3,h4{font-weight:600;letter-spacing:-.025em;line-height:1.12}
h1{font-size:clamp(38px,5.2vw,64px)}
h2{font-size:clamp(26px,3.2vw,38px)}
h3{font-size:20px;letter-spacing:-.015em;line-height:1.3}
h4{font-size:16px;letter-spacing:-.01em}
.lede{font-size:18px;line-height:1.62;color:var(--ink-3);max-width:62ch}
.small{font-size:13.5px;color:var(--muted);line-height:1.7}
.mono{font-family:var(--fm);font-size:12px;letter-spacing:.04em}

/* ---------- header ---------- */
.site-head{
  position:sticky; top:0; z-index:60;
  background:rgba(247,245,241,.86); backdrop-filter:blur(16px) saturate(1.25);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s;
}
.site-head::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent 6%,rgba(169,113,63,.5) 50%,transparent 94%);
  opacity:0;transition:opacity .35s;
}
.site-head.is-stuck::after{opacity:1}
.head-in{display:flex;align-items:center;gap:40px;height:88px;transition:height .3s cubic-bezier(.2,.7,.3,1)}
.site-head.is-stuck .head-in{height:70px}
.logo{display:flex;align-items:center;gap:11px;flex:none}
.logo svg{width:31px;height:31px;display:block;flex:none;transition:width .3s,height .3s}
.logo .wm{font-size:19px;font-weight:600;letter-spacing:.075em;line-height:1;margin-right:-.075em;transition:font-size .3s}
.site-head.is-stuck .logo svg{width:27px;height:27px}
.site-head.is-stuck .logo .wm{font-size:17.5px}
.logo .wm em{font-style:normal;color:var(--brass);font-weight:700}
.site-foot .logo .wm em{color:var(--brass-lt)}
.nav{display:flex;gap:30px;margin-left:auto}
.nav a{
  font-size:14px;color:var(--ink-2);position:relative;padding:6px 0;white-space:nowrap;
  transition:color .18s;
}
.nav a:hover{color:var(--ink)}
.nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--brass);transform:scaleX(0);transform-origin:left;transition:transform .22s;
}
.nav a:hover::after{transform:scaleX(1)}
.nav a.active{color:var(--ink)}
.nav a.active::after{transform:scaleX(1)}
.head-cta{display:flex;align-items:center;gap:16px;flex:none;position:relative;padding-left:24px}
.head-cta::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:26px;background:var(--line-2);
}
.head-tel{font-family:var(--fm);font-size:12px;color:var(--muted);letter-spacing:.02em}
.head-wa{display:inline-flex;align-items:center;gap:7px;font-family:var(--fm);font-size:12px;color:var(--muted);letter-spacing:.02em;transition:.18s}
.head-wa:hover{color:var(--ink)}
.wa-ico{position:relative;display:inline-flex;align-items:center;justify-content:center;flex:none;width:22px;height:22px;border-radius:50%}
.wa-ico svg{width:18px;height:18px;fill:#25D366;position:relative;z-index:1;transition:transform .2s;animation:waGlow 2.6s ease-in-out infinite}
.wa-ico::after{content:"";position:absolute;inset:0;border-radius:50%;pointer-events:none;animation:waPulse 2.6s cubic-bezier(.4,0,.6,1) infinite}
.head-wa:hover .wa-ico svg,.wa-foot:hover .wa-ico svg,.wa-inline:hover .wa-ico svg{transform:scale(1.12)}
@keyframes waPulse{0%{box-shadow:0 0 0 0 rgba(37,211,102,.45)}70%{box-shadow:0 0 0 9px rgba(37,211,102,0)}100%{box-shadow:0 0 0 0 rgba(37,211,102,0)}}
@keyframes waGlow{0%,100%{filter:drop-shadow(0 0 0 rgba(37,211,102,0))}50%{filter:drop-shadow(0 0 3px rgba(37,211,102,.65))}}
.foot-col .wa-foot{display:flex;align-items:center;gap:7px}
.wa-foot .wa-ico{width:18px;height:18px}
.wa-foot .wa-ico svg{width:15px;height:15px}
.wa-inline{display:inline-flex;align-items:center;gap:8px}
@media(prefers-reduced-motion:reduce){.wa-ico svg,.wa-ico::after{animation:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:46px;padding:0 22px;border-radius:2px;
  font-size:14px;font-weight:500;letter-spacing:.01em;
  transition:all .2s;white-space:nowrap;
}
.btn svg{width:14px;height:14px}
.btn-solid{background:var(--ink);color:#fff}
.btn-solid:hover{background:var(--brass)}
.btn-ghost{border:1px solid var(--line-2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:rgba(20,22,26,.03)}
.btn-brass{background:var(--brass);color:#fff}
.btn-brass:hover{background:#8E5C31}
.btn-sm{height:38px;padding:0 16px;font-size:13px}
.btn-on-dark{border:1px solid #3A4048;color:#fff}
.btn-on-dark:hover{border-color:var(--brass-lt);color:var(--brass-lt)}

.link-arrow{
  display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:500;
  color:var(--ink);border-bottom:1px solid var(--line-2);padding-bottom:3px;transition:.2s;
}
.link-arrow:hover{border-color:var(--brass);color:var(--brass);gap:11px}
.link-arrow svg{width:13px;height:13px}

/* ---------- section ---------- */
.sec{padding:96px 0}
.sec-sm{padding:64px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:44px}
.sec-head .l{max-width:640px}
.sec-head h2{margin-top:14px}
.sec-head p{margin-top:14px;color:var(--ink-3);font-size:16px;max-width:56ch}

/* ---------- hero ---------- */
.hero{position:relative;border-bottom:1px solid var(--line);background:var(--paper);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(58% 72% at 76% 34%,rgba(169,113,63,.09),rgba(169,113,63,0) 68%);pointer-events:none}
.hero-in{position:relative;display:grid;grid-template-columns:1.02fr .98fr;min-height:660px}
.hero-txt{padding:88px 56px 88px 0;display:flex;flex-direction:column;justify-content:center}
.hero-txt .eyebrow{display:inline-flex;align-items:center;gap:11px}
.hero-txt .eyebrow::before{content:"";width:26px;height:1px;background:var(--brass);flex:none}
.hero-txt h1{margin-top:22px;max-width:15ch;letter-spacing:-.035em}
.hero-txt h1 .hl{position:relative;display:inline-block}
.hero-txt h1 .hl::after{content:"";position:absolute;left:.02em;right:.02em;bottom:-.04em;height:.055em;background:var(--brass);opacity:.5;border-radius:2px}
.hero-txt .lede{margin-top:26px;max-width:46ch}
.hero-acts{display:flex;gap:12px;margin-top:36px;flex-wrap:wrap}
.hero-facts{display:flex;gap:30px;margin-top:56px;padding-top:28px;border-top:1px solid var(--line)}
.hero-facts .f .n{font-size:26px;font-weight:600;letter-spacing:-.03em;line-height:1}
.hero-facts .f .n em{font-style:normal;font-size:14px;color:var(--brass);margin-left:2px}
.hero-facts .f .k{font-family:var(--fm);font-size:9.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-top:8px;white-space:nowrap}
.hero-vis{
  position:relative;border-left:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  padding:66px 66px 66px 48px;
  background-image:linear-gradient(rgba(20,22,26,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(20,22,26,.045) 1px,transparent 1px);
  background-size:42px 42px;background-position:0 0;
  animation:heroIn .9s cubic-bezier(.2,.7,.3,1) .18s both;
}
.hero-vlabel{
  position:absolute;right:16px;top:50%;transform:translateY(-50%);writing-mode:vertical-rl;
  font-family:var(--fm);font-size:9px;letter-spacing:.3em;text-transform:uppercase;color:var(--muted);opacity:.7;
}
.hero-vis .frame{position:relative;width:100%;max-width:470px;animation:heroFloat 9s ease-in-out infinite}
.hero-vis img{width:100%;border:1px solid var(--line);background:#fff;box-shadow:0 30px 70px -34px rgba(20,22,26,.35)}
.hero-vis .tagline{
  position:absolute;left:-1px;bottom:-1px;background:var(--ink);color:#fff;
  padding:11px 18px;font-family:var(--fm);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
}
.hero-vis .tick{position:absolute;width:15px;height:15px;border:0 solid var(--brass);opacity:.85}
.hero-vis .tick.tl{left:-8px;top:-8px;border-left-width:2px;border-top-width:2px}
.hero-vis .tick.tr{right:-8px;top:-8px;border-right-width:2px;border-top-width:2px}
.hero-vis .tick.bl{left:-8px;bottom:-8px;border-left-width:2px;border-bottom-width:2px}
.hero-vis .tick.br{right:-8px;bottom:-8px;border-right-width:2px;border-bottom-width:2px}
@keyframes heroFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
@keyframes heroIn{from{opacity:0;transform:translateY(22px) scale(.99)}to{opacity:1;transform:none}}
@keyframes heroUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.hero-txt .eyebrow{animation:heroUp .65s cubic-bezier(.2,.7,.3,1) .05s both}
.hero-txt h1{animation:heroUp .7s cubic-bezier(.2,.7,.3,1) .13s both}
.hero-txt .lede{animation:heroUp .7s cubic-bezier(.2,.7,.3,1) .22s both}
.hero-txt .hero-acts{animation:heroUp .7s cubic-bezier(.2,.7,.3,1) .3s both}
.hero-txt .hero-facts{animation:heroUp .7s cubic-bezier(.2,.7,.3,1) .38s both}
@media(prefers-reduced-motion:reduce){
  .hero-txt>*,.hero-vis,.hero-vis .frame{animation:none!important}
}

/* ---------- trust strip ---------- */
.strip{border-bottom:1px solid var(--line);background:var(--paper-2)}
.strip-in{display:grid;grid-template-columns:repeat(5,1fr)}
.strip-in .it{padding:22px 26px;border-right:1px solid var(--line)}
.strip-in .it:first-child{padding-left:0}
.strip-in .it:last-child{border-right:0}
.strip-in .k{font-family:var(--fm);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.strip-in .v{font-size:14px;font-weight:500;margin-top:6px}

/* ---------- category grid ---------- */
.cats{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cat{
  background:var(--white);padding:0;display:flex;flex-direction:column;
  transition:background .2s;position:relative;
}
.cat:hover{background:#FCFBF9}
.cat-img{aspect-ratio:4/3;overflow:hidden;border-bottom:1px solid var(--line);background:#fff;display:flex;align-items:center;justify-content:center}
.cat-img img{width:100%;height:100%;object-fit:contain;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.cat:hover .cat-img img{transform:scale(1.045)}
.cat-b{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1}
.cat-b .idx{font-family:var(--fm);font-size:10.5px;letter-spacing:.14em;color:var(--brass)}
.cat-b h3{margin-top:9px}
.cat-b p{font-size:13.5px;color:var(--muted);margin-top:9px;line-height:1.6;flex:1}
.cat-b .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}
.tag{
  font-family:var(--fm);font-size:10px;letter-spacing:.06em;color:var(--ink-3);
  border:1px solid var(--line);padding:3px 7px;border-radius:2px;background:var(--paper);
}
.cat-b .go{margin-top:18px;display:flex;align-items:center;gap:6px;font-size:12.5px;font-weight:500;color:var(--ink)}
.cat-b .go svg{width:12px;height:12px;transition:transform .2s}
.cat:hover .cat-b .go svg{transform:translateX(4px)}

/* ---------- dark band ---------- */
.band{background:var(--dark);color:#E8E4DC;position:relative}
.band .eyebrow{color:var(--brass-lt)}
.band h2{color:#fff}
.band p{color:#A8A49C}
.band-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:72px;align-items:center}
.steps{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--dark-line);border:1px solid var(--dark-line)}
.step{background:var(--dark-2);padding:24px 22px}
.step .n{font-family:var(--fm);font-size:10.5px;letter-spacing:.14em;color:var(--brass-lt)}
.step h4{color:#fff;margin-top:10px;font-size:15px}
.step p{font-size:12.5px;color:#8F8B84;margin-top:7px;line-height:1.6}

/* ---------- capability list ---------- */
.caps{border-top:1px solid var(--line)}
.cap{
  display:grid;grid-template-columns:64px 1.1fr 1.5fr 1fr;gap:28px;align-items:baseline;
  padding:26px 0;border-bottom:1px solid var(--line);
}
.cap .n{font-family:var(--fm);font-size:11px;letter-spacing:.1em;color:var(--brass)}
.cap h4{font-size:16px}
.cap p{font-size:13.5px;color:var(--muted);line-height:1.6}
.cap .spec{font-family:var(--fm);font-size:11.5px;color:var(--ink-3);text-align:right;letter-spacing:.02em}

/* ---------- spec table ---------- */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{
  text-align:left;font-family:var(--fm);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:500;padding:0 0 12px;border-bottom:1px solid var(--ink);
}
.tbl td{padding:14px 0;border-bottom:1px solid var(--line);vertical-align:top}
.tbl td:first-child{width:34%;color:var(--muted);font-size:13px}
.tbl td:last-child{font-weight:500}
.tbl tr:hover td{background:rgba(169,113,63,.04)}
.tbl-idx th{padding-right:16px;white-space:nowrap}
.tbl-idx td:first-child{width:24%;white-space:nowrap}
.tbl-idx td:last-child{font-weight:400;color:var(--ink-2)}
.tbl-idx td:nth-child(2){white-space:nowrap;padding-right:16px}
.tblwrap{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}
.tblwrap>.tbl{min-width:0}

/* ---------- product cards ---------- */
.prods{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.prod{border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;transition:.22s}
.prod:hover{border-color:var(--line-2);box-shadow:0 10px 30px -18px rgba(20,22,26,.35)}
.prod-img{aspect-ratio:1/1;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden;background:#fff}
.prod-img img{width:100%;height:100%;object-fit:contain;padding:18px}
.prod-b{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
.prod-b .sku{font-family:var(--fm);font-size:10.5px;letter-spacing:.1em;color:var(--brass)}
.prod-b h4{margin-top:8px;font-size:15px;line-height:1.35}
.prod-b .meta{font-size:12.5px;color:var(--muted);margin-top:8px;flex:1}
.prod-b .row{display:flex;justify-content:space-between;align-items:center;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.prod-b .row .fob{font-family:var(--fm);font-size:12px;color:var(--ink)}
.prod-b .row .fob span{color:var(--muted)}

/* ---------- form ---------- */
.form{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-family:var(--fm);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.field input,.field select,.field textarea{
  font-family:var(--ff);font-size:14px;color:var(--ink);
  background:#fff;border:1px solid var(--line-2);border-radius:2px;
  padding:12px 14px;outline:none;transition:.18s;width:100%;
}
.field textarea{resize:vertical;min-height:110px}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brass);box-shadow:0 0 0 3px rgba(169,113,63,.12)}

/* file drop */
.fdrop{position:relative;display:block;border:1px dashed var(--line-2);background:var(--paper);padding:20px 18px;text-align:center;cursor:pointer;transition:.18s}
.fdrop:hover,.fdrop.is-drag{border-color:var(--brass);background:#FBF7F2}
.fdrop:focus-within{border-color:var(--brass);box-shadow:0 0 0 3px rgba(169,113,63,.12)}
.fdrop input[type=file]{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.fdrop svg{width:20px;height:20px;stroke:var(--brass);fill:none;stroke-width:1.4;margin:0 auto 8px;display:block}
.fdrop .fd-t{display:block;font-size:13px;color:var(--ink-2);line-height:1.5;text-transform:none;letter-spacing:0}
.fdrop .fd-t b{color:var(--ink);font-weight:600}
.fdrop .fd-h{display:block;font-family:var(--fm);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:8px}
.fpick{display:none;align-items:center;gap:10px;border:1px solid var(--line-2);background:#fff;padding:10px 12px;font-size:12.5px}
.fpick.on{display:flex}
.fpick .fname{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink)}
.fpick .fsize{font-family:var(--fm);font-size:10px;letter-spacing:.08em;color:var(--muted);white-space:nowrap}
.fpick .fx{background:none;border:0;color:var(--muted);cursor:pointer;font-size:15px;line-height:1;padding:2px 4px}
.fpick .fx:hover{color:#B3261E}
.fnote{font-size:11.5px;line-height:1.5;color:var(--muted);margin:0}
.fnote.bad{color:#B3261E}

/* ---------- footer ---------- */
.site-foot{background:var(--dark);color:#8F8B84;padding:64px 0 28px;border-top:1px solid var(--dark-line)}
.foot-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid var(--dark-line)}
.site-foot .logo .wm{color:#fff}
.site-foot .logo .wm span{color:#8F8B84}
.foot-top .about{font-size:13px;line-height:1.75;margin-top:16px;max-width:34ch}
.foot-col h5{font-family:var(--fm);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:#5E5A54;font-weight:500;margin-bottom:14px}
.foot-col a{display:block;font-size:13px;color:#A8A49C;padding:5px 0;transition:.18s}
.foot-col a:hover{color:var(--brass-lt)}
.foot-bot{display:flex;justify-content:space-between;gap:24px;padding-top:24px;font-size:11.5px;color:#5E5A54;flex-wrap:wrap}
.foot-bot .mono{color:#5E5A54;font-size:11px}

/* ---------- page hero (inner) ---------- */
.phero{border-bottom:1px solid var(--line);padding:64px 0 56px;background:var(--paper-2)}
.phero .crumb{font-family:var(--fm);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:18px}
.phero .crumb a:hover{color:var(--brass)}
.phero h1{font-size:clamp(32px,4vw,48px);max-width:20ch}
.phero p{margin-top:18px;font-size:16.5px;color:var(--ink-3);max-width:60ch}

/* ---------- misc ---------- */
.hr{height:1px;background:var(--line);border:0}
.two{display:grid;grid-template-columns:1fr 1fr;gap:64px}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.note-box{border-left:2px solid var(--brass);padding:2px 0 2px 20px;font-size:13.5px;color:var(--ink-3);line-height:1.7}
.badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--fm);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--brass);border:1px solid var(--brass);padding:4px 9px;border-radius:2px}

@media(max-width:1080px){
  .hero-in{grid-template-columns:1fr}
  .hero-txt{padding:56px 0}
  .hero-vis{border-left:0;border-top:1px solid var(--line);padding:40px 0}
  .hero-vlabel{display:none}
  .cats,.prods{grid-template-columns:repeat(2,1fr)}
  .band-grid,.two{grid-template-columns:1fr;gap:40px}
  .band .wrap[style*="grid-template-columns"]{grid-template-columns:minmax(0,1fr)!important;gap:40px}
  .foot-top{grid-template-columns:1fr 1fr}
  .strip-in{grid-template-columns:repeat(2,1fr)}
  .strip-in .it{border-right:0;border-bottom:1px solid var(--line);padding-left:0}
}
@media(max-width:720px){
  :root{--gut:20px}
  .nav{display:none}
  .cats,.prods,.three,.form,.steps{grid-template-columns:1fr}
  .steps[style*="repeat"]{grid-template-columns:1fr!important}
  .cap{grid-template-columns:40px 1fr;gap:12px}
  .cap .spec{grid-column:2;text-align:left}
  .sec{padding:64px 0}
  .hero-facts{gap:22px;flex-wrap:wrap}
  .foot-top{grid-template-columns:1fr}
}

/* ---------- additions: sticky shadow, mobile menu, reveal ---------- */
.site-head.is-stuck{box-shadow:0 1px 0 var(--line), 0 8px 28px -22px rgba(20,22,26,.55)}
.menu-btn{display:none;align-items:center;gap:8px;font-family:var(--fm);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink);border:1px solid var(--line-2);height:36px;padding:0 12px;border-radius:2px}
.menu-btn svg{width:14px;height:14px}
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .65s cubic-bezier(.2,.7,.3,1),transform .65s cubic-bezier(.2,.7,.3,1)}
[data-reveal].in{opacity:1;transform:none}

@media(max-width:980px){
  .head-tel{display:none}
  .head-wa .wa-txt{display:none}
  .head-wa .wa-ico{width:24px;height:24px}
  .head-wa .wa-ico svg{width:20px;height:20px}
}
@media(max-width:1240px){
  .head-in{gap:26px}
  .nav{gap:20px}
  .nav a{font-size:13.5px}
  .head-cta{padding-left:18px;gap:12px}
}
@media(max-width:1200px){
  .menu-btn{display:inline-flex}
  .head-cta{margin-left:auto}
  .nav{
    display:none;position:absolute;left:0;right:0;top:100%;background:var(--paper);
    border-bottom:1px solid var(--line);padding:10px var(--gut) 18px;
    flex-direction:column;gap:0;box-shadow:0 18px 30px -24px rgba(0,0,0,.5);
  }
  .nav.is-open{display:flex}
  .nav a{padding:13px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav a::after{display:none}
}
@media(max-width:720px){
  .head-in{height:68px;gap:16px}
  .site-head.is-stuck .head-in{height:62px}
  .logo svg{width:26px;height:26px}
  .logo .wm{font-size:17px}
  .head-cta{padding-left:0;gap:10px}
  .head-cta::before{display:none}
  .head-cta .btn{height:36px;padding:0 12px;font-size:12px}
}
@media(max-width:430px){
  .head-cta .btn{display:none}
  .head-cta{gap:8px}
  .head-in{gap:10px}
  .logo .wm{font-size:16px}
  .menu-btn{padding:0 10px;font-size:10px;letter-spacing:.06em}
}

/* ---------- responsive hardening ---------- */
.hero-in>*,.strip-in>*,.cats>*,.prods>*,.three>*,.two>*,.form>*,.sec-head>*,.band-grid>*,.cap>*,.steps>*,.catsec>*,.chapter>*{min-width:0}
.sec-head{flex-wrap:wrap}
@media(max-width:1080px){
  .wrap[style*="grid-template-columns"]{grid-template-columns:minmax(0,1fr)!important;gap:40px!important}
  .strip-in{grid-template-columns:1fr 1fr}
  .strip-in .it{padding:18px 20px 18px 0;border-right:0;border-bottom:1px solid var(--line)}
}
@media(max-width:720px){
  .hero-facts{display:grid;grid-template-columns:1fr 1fr;gap:20px 14px;margin-top:38px}
  .hero-facts .f .n{font-size:23px}
  .hero-facts .f .k{font-size:9.5px;letter-spacing:.1em}
  .head-in{gap:10px;height:64px}
  .logo svg{width:22px;height:22px}
  .logo .wm{font-size:15px;letter-spacing:.01em}
  .head-cta{gap:7px}
  .head-cta .btn{height:34px;padding:0 10px;font-size:11.5px}
  .menu-btn{height:34px;padding:0 9px;font-size:10px;letter-spacing:.08em;gap:5px}
  .nav{top:64px}
  .hero-txt h1{font-size:34px}
  .hero-txt .lede{font-size:16px}
  .pdp-facts{grid-template-columns:1fr 1fr}
  .subnav{top:64px}
  .catsec .keys{gap:18px;flex-wrap:wrap}
  .tbl td:first-child{width:44%}
  .stats{grid-template-columns:1fr 1fr}
}

/* ---------- article ---------- */
.art-hero{padding:52px 0 44px;border-bottom:1px solid var(--line)}
.art-hero .cat{font-family:var(--fm);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--brass);background:none;border:0;padding:0;display:inline-block;position:static;transition:none}
.art-hero h1{font-size:clamp(30px,4vw,46px);max-width:24ch;margin-top:14px;line-height:1.14}
.art-hero .dek{margin-top:20px;font-size:18px;line-height:1.6;color:var(--ink-3);max-width:58ch}
.art-meta{display:flex;gap:22px;flex-wrap:wrap;margin-top:24px;font-family:var(--fm);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.art-wrap{display:grid;grid-template-columns:minmax(0,720px) 1fr;gap:72px;padding:56px var(--gut) 80px}
.art p{font-size:17px;line-height:1.78;color:var(--ink-2);margin:0 0 22px}
.art h2{font-size:26px;margin:46px 0 16px;padding:0;border:0;letter-spacing:-.02em}
.art h3{font-size:19px;margin:34px 0 12px}
.art ul,.art ol{margin:0 0 22px;padding-left:22px;font-size:16.5px;color:var(--ink-2);line-height:1.75}
.art li{margin-bottom:10px}
.art strong{font-weight:600;color:var(--ink)}
.art blockquote{border-left:2px solid var(--brass);padding-left:22px;margin:34px 0;font-size:21px;line-height:1.5;color:var(--ink);letter-spacing:-.015em}
.art blockquote p{font-size:21px;color:var(--ink);margin:0}
.art table{width:100%;border-collapse:collapse;font-size:14px;margin:26px 0}
.art th{text-align:left;font-family:var(--fm);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:500;padding:0 12px 10px 0;border-bottom:1px solid var(--ink)}
.art td{padding:11px 12px 11px 0;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}
.art figure{margin:32px 0}
.art figure img{border:1px solid var(--line);background:#fff}
.art figcaption{font-size:12.5px;color:var(--muted);margin-top:10px;font-family:var(--fm);letter-spacing:.02em}
.art-side{position:sticky;top:110px;align-self:start}
.art-side .box{border:1px solid var(--line);background:#fff;padding:24px}
.art-side h4{font-size:15px}
.art-side p{font-size:13px;color:var(--muted);margin-top:8px;line-height:1.65}
.art-cta{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-2);padding:40px 0;margin:0 0 64px}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post{border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;transition:.2s}
.post:hover{border-color:var(--line-2);box-shadow:0 10px 30px -20px rgba(20,22,26,.4)}
.post .ph{aspect-ratio:16/10;border-bottom:1px solid var(--line);overflow:hidden;display:flex;align-items:center;justify-content:center;background:#fff}
.post .ph img{width:100%;height:100%;object-fit:cover}
.post .pb{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column}
.post .pc{font-family:var(--fm);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--brass)}
.post h3{font-size:16px;margin-top:10px;line-height:1.35}
.post p{font-size:13px;color:var(--muted);margin-top:9px;line-height:1.6;flex:1}
.post .pm{font-family:var(--fm);font-size:10px;letter-spacing:.08em;color:var(--muted);margin-top:16px;padding-top:12px;border-top:1px solid var(--line)}
@media(max-width:1000px){.art-wrap{grid-template-columns:1fr;gap:40px}.post-grid{grid-template-columns:1fr 1fr}.art-side{position:static}}
@media(max-width:680px){.post-grid{grid-template-columns:1fr}}

/* nav with 7 items */
@media(max-width:1180px){.head-tel{display:none}}
@media(max-width:1080px){.nav{gap:16px}.nav a{font-size:12.5px}}

.range-strip{display:flex;gap:12px;margin-top:26px}
.range-strip .rp{flex:1;border:1px solid var(--line);background:#fff;padding:8px;min-width:0}
.range-strip .rp .im{aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;overflow:hidden}
.range-strip .rp img{width:100%;height:100%;object-fit:contain;transition:transform .4s cubic-bezier(.2,.7,.3,1)}
.range-strip .rp:hover img{transform:scale(1.05)}
.range-strip .rp .lb{font-family:var(--fm);font-size:9.5px;letter-spacing:.08em;color:var(--muted);margin-top:8px;display:flex;justify-content:space-between;gap:8px}
.range-strip .rp .lb span{color:var(--brass)}

/* ---------- reveal + stagger ---------- */
@media (prefers-reduced-motion: reduce){
  [data-reveal]{opacity:1!important;transform:none!important;transition:none!important}
}

/* ---------- industrial photo & engineering visuals ---------- */
.fac-hero{margin:36px 0 0;border:1px solid var(--line);background:#10141A;position:relative;overflow:hidden;border-radius:4px}
.fac-hero img{width:100%;height:440px;object-fit:cover;display:block;filter:contrast(1.05) brightness(.92)}
.fac-hero .overlay{position:absolute;inset:0;background:linear-gradient(to top, rgba(14,17,22,.85) 0%, rgba(14,17,22,.2) 60%, transparent 100%);display:flex;align-items:flex-end;padding:32px 36px}
.fac-hero .meta-strip{display:flex;gap:36px;flex-wrap:wrap;color:#fff;font-family:var(--fm);font-size:11px;letter-spacing:.1em;text-transform:uppercase}
.fac-hero .meta-strip b{color:var(--brass-lt);font-weight:600}

.proc-bento{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;margin-top:36px}
.pcard{border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;overflow:hidden;transition:border-color .3s,box-shadow .3s}
.pcard:hover{border-color:var(--brass);box-shadow:0 8px 24px rgba(20,22,26,.06)}
.pcard .pimg{aspect-ratio:16/10;overflow:hidden;background:#141820;position:relative}
.pcard .pimg img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.pcard:hover .pimg img{transform:scale(1.04)}
.pcard .pimg .pbadge{position:absolute;top:14px;left:14px;font-family:var(--fm);font-size:10px;letter-spacing:.12em;padding:4px 9px;background:rgba(14,17,22,.85);color:#fff;border:1px solid rgba(255,255,255,.15);border-radius:2px}
.pcard .pbody{padding:26px 28px;display:flex;flex-direction:column;flex:1}
.pcard h3{font-size:20px;font-weight:500;margin-bottom:10px}
.pcard .pdesc{font-size:14px;color:var(--ink-3);line-height:1.65;margin-bottom:20px;flex:1}
.pcard .pspecs{display:grid;grid-template-columns:1fr 1fr;gap:12px 18px;padding-top:18px;border-top:1px solid var(--line);background:var(--paper);margin:-4px -28px -26px;padding:18px 28px}
.pcard .pspecs .k{font-family:var(--fm);font-size:9.5px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}
.pcard .pspecs .v{font-size:13px;font-weight:500;color:var(--ink);margin-top:3px}

.cad-panel{border:1px solid var(--line);background:#0E1116;margin-top:32px;overflow:hidden;border-radius:4px}
.cad-panel .cad-top{padding:14px 20px;background:#141820;border-bottom:1px solid #232A36;display:flex;justify-content:space-between;align-items:center;font-family:var(--fm);font-size:11px;letter-spacing:.1em;color:#9BA3B2}
.cad-panel .cad-top span{color:var(--brass-lt)}
.cad-panel .cad-body{padding:24px;display:flex;align-items:center;justify-content:center}
.cad-panel svg{max-width:100%;height:auto;display:block}

.gate-split{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:center;margin-top:28px}
.gate-img{border:1px solid var(--dark-line);overflow:hidden;border-radius:3px;position:relative}
.gate-img img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:4/3}
.gate-img .cap{position:absolute;bottom:0;left:0;right:0;padding:12px 16px;background:rgba(14,17,22,.85);font-family:var(--fm);font-size:10px;letter-spacing:.1em;color:#A8A49C}
.gate-img .cap span{color:var(--brass-lt)}

.tl-visual{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;padding:48px 0;border-bottom:1px solid var(--line)}
.tl-visual:nth-child(even){direction:rtl}
.tl-visual:nth-child(even)>*{direction:ltr}
.tl-visual .v-img{border:1px solid var(--line);overflow:hidden;border-radius:3px;background:#12161E}
.tl-visual .v-img img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block}
.tl-visual .v-txt .year{font-family:var(--fm);font-size:13px;letter-spacing:.14em;color:var(--brass);font-weight:600}
.tl-visual .v-txt h3{font-size:24px;margin:10px 0 14px}
.tl-visual .v-txt p{font-size:15px;color:var(--ink-3);line-height:1.7}

@media(max-width:980px){
  .proc-bento{grid-template-columns:1fr}
  .gate-split{grid-template-columns:1fr}
  .tl-visual,.tl-visual:nth-child(even){direction:ltr;grid-template-columns:1fr;gap:22px;padding:36px 0}
  .fac-hero img{height:280px}
  .fac-hero .meta-strip{gap:16px}
}


/* ---------- article: citability + E-E-A-T blocks ---------- */
.tldr{border:1px solid var(--line);border-left:2px solid var(--brass);background:#fff;padding:22px 26px 24px;margin:0 0 36px}
.tldr h2{font-size:11px;font-family:var(--fm);letter-spacing:.14em;text-transform:uppercase;color:var(--brass);margin:0 0 12px;padding:0;border:0}
.tldr ul{margin:0;padding-left:18px}
.tldr li{font-size:15px;line-height:1.62;margin-bottom:8px;color:var(--ink-2)}
.tldr li:last-child{margin-bottom:0}
.tldr li b{color:var(--ink);font-weight:600}
.author-box{display:flex;gap:16px;border-top:1px solid var(--line);margin-top:46px;padding-top:24px}
.author-box .ab-av{width:46px;height:46px;flex:0 0 46px;border:1px solid var(--line);background:var(--paper-2);display:grid;place-items:center;font-family:var(--fm);font-size:11px;letter-spacing:.06em;color:var(--brass)}
.author-box b{display:block;font-size:14.5px;color:var(--ink)}
.author-box p{font-size:13.5px;line-height:1.65;color:var(--muted);margin:6px 0 0}
.author-box .ab-meta{font-family:var(--fm);font-size:10px;letter-spacing:.1em;text-transform:uppercase;margin-top:10px;color:var(--muted)}
.art .src{font-size:12.5px;color:var(--muted);margin-top:-10px;margin-bottom:24px}
.art .src a{color:var(--muted);border-bottom:1px solid var(--line)}
.art .src-list{margin:12px 0 0;padding-left:20px;font-size:13.5px;line-height:1.7;color:var(--muted)}
.art .src-list li{margin-bottom:9px}
.art .src-list a{color:var(--ink-2);border-bottom:1px solid var(--line)}
.art .src-list a:hover{color:var(--brass);border-color:var(--brass)}
@media(max-width:760px){
  .art table{font-size:12.5px}
  .art th,.art td{padding-right:8px}
  .art h2{font-size:22px}
  .art p,.art ul,.art ol{font-size:16px}
}

/* ---------- blog index ---------- */
.blog-hero{padding:64px 0 40px;border-bottom:1px solid var(--line)}
.blog-hero h1{font-size:clamp(30px,4.2vw,50px);letter-spacing:-.025em;max-width:24ch;margin-top:14px}
.blog-hero p{margin-top:18px;font-size:17px;line-height:1.65;color:var(--ink-3);max-width:60ch}
.blog-filter{display:flex;gap:10px;flex-wrap:wrap;margin:28px 0 0}
.blog-filter a,.blog-filter button{font-family:var(--fm);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;padding:7px 13px;border:1px solid var(--line);color:var(--ink-3);background:#fff;cursor:pointer;line-height:1.4}
.blog-filter a.on,.blog-filter button.on{background:var(--ink);border-color:var(--ink);color:#fff}
.blog-filter button:hover{color:var(--ink);border-color:var(--line-2)}
.feat{display:grid;grid-template-columns:1.15fr .85fr;gap:0;border:1px solid var(--line);background:#fff;margin:44px 0 10px}
.feat .fimg{overflow:hidden;min-height:300px}
.feat .fimg img{width:100%;height:100%;object-fit:cover;display:block}
.feat .fbody{padding:34px 34px 30px;display:flex;flex-direction:column;justify-content:center}
.feat .pc{font-family:var(--fm);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--brass)}
.feat h2{font-size:26px;line-height:1.25;margin-top:12px;letter-spacing:-.02em}
.feat p{font-size:14.5px;line-height:1.65;color:var(--muted);margin-top:12px}
.feat .pm{font-family:var(--fm);font-size:10px;letter-spacing:.08em;color:var(--muted);margin-top:20px;text-transform:uppercase}
@media(max-width:900px){.feat{grid-template-columns:1fr}.feat .fimg{min-height:220px}}
/* ---------- publishing calendar ---------- */
.cal{width:100%;border-collapse:collapse;font-size:13.5px;margin:26px 0}
.cal th{text-align:left;font-family:var(--fm);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:500;padding:0 12px 10px 0;border-bottom:1px solid var(--ink)}
.cal td{padding:12px 12px 12px 0;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}
.cal td.d{font-family:var(--fm);font-size:11.5px;color:var(--brass);white-space:nowrap}
.cal td b{color:var(--ink);font-weight:600}
.cal .st{font-family:var(--fm);font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;padding:3px 8px;border:1px solid var(--line);white-space:nowrap}
.cal .st.live{color:#2E7D52;border-color:#BFD9C9;background:#F1F8F3}
.cal .st.next{color:#8A6A2F;border-color:#E4D3B4;background:#FBF6EC}

/* ---------- print: spec sheet ---------- */
@media print{
  .site-head,.site-foot,.head-cta,.menu-btn,.pdp-acts,.art-side,.art-cta,.catfoot,.range-strip,.gal .thumbs,.link-arrow,.subnav{display:none!important}
  body{background:#fff;font-size:12px}
  .wrap{max-width:100%;padding:0}
  .pdp,.blocks{grid-template-columns:1fr;gap:24px;padding:16px 0}
  .gal .main{border:0}
  .pdp-info h1{font-size:26px}
  .tbl th{border-bottom:2px solid #000}
  .tbl td{padding:8px 0;border-bottom:1px solid #ccc}
  a{color:#000;text-decoration:none}
  .phero{padding:24px 0}
}