/* =========================================================
   INTERLOCK — Liquid Glass Design System
   Industrial firefighting brand rebuilt as flowing water /
   foam glass over a molten graphite-and-steel gradient.

   Single source of truth. All pages (home, products, blog,
   cooperation) share this file via relative paths.
   ========================================================= */

:root{
  /* --- brand core --- */
  --graphite:#12151a;
  --graphite-2:#1b1f26;
  --steel-white:#eef1ee;
  --paper:#ffffff;
  --red:#e6392a;
  --red-dark:#a91f16;
  --red-glow:rgba(230,57,42,.45);
  /* accessible red for small text on light backgrounds (AA ≥4.5) */
  --red-text:#c22818;
  --steel:#8b9096;
  /* readable steel for small text on light glass */
  --steel-text:#5c6064;
  --steel-line:#333a44;
  --green:#2e9d6f;
  --green-glow:rgba(46,157,111,.35);
  --ink:#161a1e;
  --ring-teeth: 8;

  /* --- liquid glass tokens --- */
  --glass-light-bg: rgba(255,255,255,.42);
  --glass-light-bg-strong: rgba(255,255,255,.62);
  --glass-light-border: rgba(255,255,255,.65);
  --glass-dark-bg: rgba(18,21,26,.55);
  --glass-dark-bg-strong: rgba(18,21,26,.78);
  --glass-dark-border: rgba(255,255,255,.14);
  --glass-blur: 22px;
  --glass-blur-strong: 34px;
  --glass-sat: 1.6;
  --ease-liquid: cubic-bezier(.22,1,.36,1);
  --ease-jelly: cubic-bezier(.34,1.56,.64,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Vazirmatn',sans-serif;
  background:var(--steel-white);
  color:var(--ink);
  line-height:1.7;
  overflow-x:hidden;
  position:relative;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.mono{font-family:'JetBrains Mono',monospace;direction:ltr;display:inline-block}
.disp{font-family:'Oswald',sans-serif}

/* =========================================================
   LIQUID BACKDROP — one fixed canvas of flowing color that
   the whole site floats above. Glass panels refract it.
   ========================================================= */
.liquid-backdrop{
  position:fixed;
  inset:0;
  z-index:-2;
  overflow:hidden;
  background:
    radial-gradient(ellipse 80% 60% at 15% 0%, #dff0e8 0%, transparent 55%),
    radial-gradient(ellipse 70% 60% at 100% 20%, #ffe2dd 0%, transparent 50%),
    radial-gradient(ellipse 90% 70% at 50% 100%, #e3ecf4 0%, transparent 55%),
    linear-gradient(160deg, #f4f6f2 0%, #e9efe9 45%, #e2ece7 100%);
}
.liquid-backdrop canvas{
  position:absolute; inset:0; width:100%; height:100%;
  mix-blend-mode:multiply;
  opacity:.85;
}
.liquid-noise{
  position:fixed; inset:0; z-index:-1; pointer-events:none;
  opacity:.035;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* SVG filter defs host (invisible) */
#liquid-filters{position:absolute;width:0;height:0;overflow:hidden}

/* ---------- coupling ring signature element ---------- */
.ring{
  --size:64px;
  width:var(--size);height:var(--size);
  border-radius:50%;
  position:relative;
  flex:none;
}
.ring svg{width:100%;height:100%;display:block}

/* ---------- layout helpers ---------- */
.wrap{max-width:1240px;margin:0 auto;padding:0 28px}
.section{padding:110px 0}
.section-tight{padding:70px 0}
@media(max-width:768px){
  .section{padding:70px 0}
  .section-tight{padding:48px 0}
  .wrap{padding:0 20px}
}
.eyebrow{
  font-family:'JetBrains Mono',monospace;
  direction:ltr;
  font-size:12.5px;
  letter-spacing:.14em;
  color:var(--red-text);
  font-weight:600;
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:26px;height:2px;background:var(--red);
  display:inline-block;
}
h1,h2,h3{font-weight:800;letter-spacing:-0.01em}
.h2{font-size:clamp(28px,4vw,44px);line-height:1.2;margin-bottom:18px}
.lede{font-size:17px;color:#43474c;max-width:620px}
.on-dark .lede{color:#b9bcbf}

/* =========================================================
   LIQUID GLASS BUTTONS
   ========================================================= */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 30px;
  font-weight:700;font-size:15px;
  border-radius:14px;
  border:1px solid transparent;
  cursor:pointer;
  position:relative;
  overflow:hidden;
  isolation:isolate;
  transition:transform .45s var(--ease-liquid), box-shadow .45s var(--ease-liquid), background .3s ease, border-color .3s ease, color .3s ease;
}
.btn::before{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(120deg, rgba(255,255,255,0) 30%, rgba(255,255,255,.55) 48%, rgba(255,255,255,0) 66%);
  transform:translateX(-140%) skewX(-12deg);
  transition:transform .75s var(--ease-liquid);
  pointer-events:none;
  z-index:2;
}
.btn:hover::before{transform:translateX(140%) skewX(-12deg)}
.btn:active{transform:scale(.96) translateY(1px)}

.btn-primary{
  background:linear-gradient(155deg, #ef4c3b, var(--red) 55%, var(--red-dark));
  color:#fff;
  box-shadow:0 6px 20px -4px var(--red-glow), inset 0 1px 0 rgba(255,255,255,.35), inset 0 -6px 14px -6px rgba(0,0,0,.35);
}
.btn-primary:hover{
  transform:translateY(-3px) scale(1.015);
  box-shadow:0 16px 34px -8px var(--red-glow), inset 0 1px 0 rgba(255,255,255,.45), inset 0 -6px 14px -6px rgba(0,0,0,.3);
}
.btn-ghost{
  border:1.5px solid rgba(255,255,255,.4);
  color:#fff;
  background:rgba(255,255,255,.08);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.25), 0 6px 18px -6px rgba(0,0,0,.25);
}
.btn-ghost:hover{
  border-color:#fff;
  background:rgba(255,255,255,.16);
  transform:translateY(-3px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35), 0 14px 28px -8px rgba(0,0,0,.3);
}
/* ghost variant for light backgrounds — dark glass instead of white */
.pd-cta .btn-ghost,.on-light .btn-ghost{
  border:1.5px solid rgba(18,21,26,.45);
  color:var(--graphite);
  background:rgba(255,255,255,.5);
  backdrop-filter:blur(12px) saturate(1.5);
  -webkit-backdrop-filter:blur(12px) saturate(1.5);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.6), 0 6px 18px -8px rgba(18,21,26,.25);
}
.pd-cta .btn-ghost:hover,.on-light .btn-ghost:hover{
  background:var(--graphite);color:#fff;border-color:var(--graphite);
  box-shadow:0 14px 28px -8px rgba(18,21,26,.4);
}
.btn-dark{
  border:1.5px solid rgba(18,21,26,.7);
  color:var(--graphite);
  background:rgba(255,255,255,.5);
  backdrop-filter:blur(12px) saturate(1.5);
  -webkit-backdrop-filter:blur(12px) saturate(1.5);
}
.btn-dark:hover{
  background:var(--graphite);color:#fff;
  transform:translateY(-3px);
  box-shadow:0 14px 28px -8px rgba(18,21,26,.4);
}
.btn-white{
  background:rgba(255,255,255,.92);
  color:var(--red-dark);
  backdrop-filter:blur(10px);
  box-shadow:inset 0 1px 0 #fff, 0 8px 20px -6px rgba(0,0,0,.25);
}
.btn-white:hover{background:#fff;transform:translateY(-3px)}

/* liquid ripple splash — JS injects a single .liquid-ripple span */
.btn .liquid-ripple,
.tab-btn .liquid-ripple,
.coop-tab-btn .liquid-ripple,
.float-contact a .liquid-ripple,
.footer-social a .liquid-ripple,
.lang-switch-btn .liquid-ripple{
  position:absolute;
  border-radius:50%;
  background:radial-gradient(circle, rgba(255,255,255,.85) 0%, rgba(255,255,255,.25) 55%, transparent 75%);
  transform:scale(0);
  animation:liquidRipple .75s var(--ease-liquid) forwards;
  pointer-events:none;
  z-index:1;
  mix-blend-mode:overlay;
}
@keyframes liquidRipple{
  0%{transform:scale(0);opacity:1}
  70%{opacity:.5}
  100%{transform:scale(3.2);opacity:0}
}

/* ---------- nav ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(18,21,26,0);
  /* only cheap paints animate here — backdrop-filter/padding snap,
     animating them thrashes layout+filters every frame on scroll */
  transition:background .45s var(--ease-liquid), box-shadow .45s var(--ease-liquid);
  padding:22px 0;
}
header.scrolled{
  /* near-opaque dark glass — the bar must stay readable over ANY page
     region (light sections included); pure alpha .78 washed out to
     near-white over light backdrops on some GPUs */
  background:linear-gradient(180deg, rgba(18,21,26,.96), rgba(18,21,26,.92));
  backdrop-filter:blur(var(--glass-blur-strong)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur-strong)) saturate(var(--glass-sat));
  box-shadow:0 1px 0 rgba(255,255,255,.08), 0 20px 40px -20px rgba(0,0,0,.5);
  padding:12px 0;
  border-bottom:1px solid var(--glass-dark-border);
}
/* fallback for browsers without backdrop-filter support: fully opaque */
@supports not ((backdrop-filter: blur(4px)) or (-webkit-backdrop-filter: blur(4px))){
  header.scrolled{background:#12151a}
}
/* pages WITHOUT the dark hero under the bar (products, blog, cooperation)
   get a permanently-solid header: no transparent state exists to flash
   through, and JS never toggles it */
header.solid{
  background:#12151a !important;
  transition:none;
}
header.solid.scrolled{
  background:#12151a !important;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:44px;height:auto;border-radius:50%}
.brand-name{font-family:'Oswald',sans-serif;color:#fff;font-size:19px;font-weight:600;letter-spacing:.02em}
.brand-name span{color:var(--red)}
nav.links{display:flex;gap:34px}
nav.links a{
  color:#d7d8d9;font-size:14.5px;font-weight:500;position:relative;padding:6px 0;
  transition:color .25s ease;
}
nav.links a::after{
  content:"";position:absolute;bottom:0;right:0;left:auto;width:0;height:2px;
  background:linear-gradient(90deg, var(--red), #ff8a72);
  border-radius:2px;
  box-shadow:0 0 10px var(--red-glow);
  transition:width .35s var(--ease-liquid);
}
nav.links a:hover::after{width:100%}
nav.links a:hover{color:#fff}
.nav-cta{display:flex;align-items:center;gap:16px}
.nav-phone{color:#fff;font-size:14px;display:flex;align-items:center;gap:8px}
.nav-phone .mono{color:#fff;font-weight:600;font-size:14.5px}
.burger{display:none;width:26px;height:20px;position:relative;cursor:pointer;flex:none;background:none;border:none}
.burger span{position:absolute;right:0;width:100%;height:2px;background:#fff;transition:all .3s var(--ease-liquid);border-radius:2px}
.burger span:nth-child(1){top:0}
.burger span:nth-child(2){top:9px}
.burger span:nth-child(3){top:18px}
.burger.open span:nth-child(1){top:9px;transform:rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){top:9px;transform:rotate(-45deg)}
@media(max-width:960px){
  nav.links{display:none}
  .nav-phone{display:none}
  .burger{display:block}
}
.mobile-menu{
  position:fixed;inset:0;background:var(--glass-dark-bg-strong);
  backdrop-filter:blur(30px) saturate(1.6);
  -webkit-backdrop-filter:blur(30px) saturate(1.6);
  z-index:99;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;
  transform:translateY(-100%);transition:transform .5s var(--ease-liquid);
}
.mobile-menu.open{transform:translateY(0)}
.mobile-menu a{color:#fff;font-family:'Oswald',sans-serif;font-size:26px}

/* ---------- hero ---------- */
.hero{
  position:relative;
  background:transparent;
  padding-top:170px;
  padding-bottom:0;
  min-height:92vh;
  display:flex;
  align-items:center;
  isolation:isolate;
}
.hero::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:100%;
  background:
    radial-gradient(circle at 85% 15%, rgba(230,57,42,.30), transparent 45%),
    radial-gradient(circle at 5% 90%, rgba(46,157,111,.18), transparent 50%);
  pointer-events:none;
  z-index:-1;
}
/* dark glass slab behind hero content so glass cards have something to refract */
.hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(165deg, rgba(18,21,26,.94) 0%, rgba(18,21,26,.86) 55%, rgba(24,30,38,.92) 100%);
  z-index:-2;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:40px;
  align-items:center;
  position:relative;
  z-index:2;
}
.hero-kicker{
  font-family:'JetBrains Mono',monospace;direction:ltr;
  color:var(--red);font-size:13px;letter-spacing:.15em;font-weight:600;
  display:flex;align-items:center;gap:10px;margin-bottom:22px;
}
.hero-kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(46,157,111,.25), 0 0 14px var(--green-glow);animation:dotPulse 2.4s ease-in-out infinite}
@keyframes dotPulse{0%,100%{box-shadow:0 0 0 4px rgba(46,157,111,.25), 0 0 14px var(--green-glow)}50%{box-shadow:0 0 0 7px rgba(46,157,111,.12), 0 0 20px var(--green-glow)}}
.hero h1{
  font-family:'Oswald',sans-serif;
  color:#fff;
  font-size:clamp(38px,5.2vw,66px);
  line-height:1.12;
  font-weight:700;
  margin-bottom:24px;
}
.hero h1 em{
  font-style:normal;color:var(--red);
  position:relative;
  text-shadow:0 0 24px var(--red-glow);
}
.hero p.lede{color:#d0d2d4;font-size:18px;margin-bottom:36px;max-width:540px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--glass-dark-border);
  border:1px solid var(--glass-dark-border);
  border-radius:16px;
  overflow:hidden;
  backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  box-shadow:0 24px 48px -24px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.08);
}
.hero-stats .stat{
  background:rgba(255,255,255,.03);
  padding:18px 16px;
  transition:background .3s ease, transform .3s var(--ease-liquid);
}
.hero-stats .stat:hover{background:rgba(230,57,42,.12);transform:translateY(-3px)}
.hero-stats .num{font-family:'Oswald',sans-serif;color:#fff;font-size:30px;font-weight:600;line-height:1}
.hero-stats .num span{color:var(--red)}
.hero-stats .lbl{color:#b6b9bc;font-size:12px;margin-top:6px}

.hero-visual{position:relative}
.hero-photo-frame{
  position:relative;
  border-radius:26px;
  overflow:hidden;
  box-shadow:0 40px 90px -20px rgba(0,0,0,.65), inset 0 0 0 1px rgba(255,255,255,.12);
  background:var(--red);
}
.hero-photo-frame::after{
  content:"";
  position:absolute; inset:0;
  background:linear-gradient(135deg, rgba(255,255,255,.28) 0%, transparent 30%, transparent 70%, rgba(0,0,0,.18) 100%);
  pointer-events:none;
}
.hero-photo-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:6/5;object-position:50% 30%}
.hero-badge{
  position:absolute;
  bottom:-26px;right:-18px;
  background:linear-gradient(155deg, #ef4c3b, var(--red) 60%, var(--red-dark));
  color:#fff;
  padding:18px 22px;
  border-radius:20px;
  box-shadow:0 24px 50px -12px var(--red-glow), inset 0 1px 0 rgba(255,255,255,.35);
  display:flex;align-items:center;gap:14px;
  z-index:3;
  border:1px solid rgba(255,255,255,.25);
  backdrop-filter:blur(10px);
}
.hero-badge .ring{--size:46px}
.hero-badge .txt{font-family:'Oswald',sans-serif;font-size:15px;line-height:1.3}
.hero-badge .txt b{display:block;font-size:19px}
@media(max-width:960px){
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{order:-1}
  .hero{padding-top:120px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
}

/* ---------- product ticker (3D flip) ---------- */
.strip{
  background:linear-gradient(120deg, var(--red-dark), var(--red) 50%, #ef4c3b);
  overflow:hidden;
  padding:16px 0;
  position:relative;
  box-shadow:inset 0 2px 8px rgba(0,0,0,.15), inset 0 -2px 8px rgba(0,0,0,.15);
}
.ticker{
  display:flex;align-items:center;justify-content:center;gap:22px;flex-wrap:wrap;
  max-width:1240px;margin:0 auto;padding:0 28px;
}
.ticker-label{
  color:rgba(255,255,255,.85);font-size:11.5px;font-weight:600;letter-spacing:.18em;
  display:inline-flex;align-items:center;gap:10px;flex:none;
}
.ticker-label::before{content:"";width:7px;height:7px;border-radius:50%;background:#fff;box-shadow:0 0 10px rgba(255,255,255,.8);animation:dotPulse 1.6s ease-in-out infinite}
.ticker-flip{
  position:relative;height:34px;width:190px;
  perspective:420px;
  transform-style:preserve-3d;
}
.ticker-word{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  font-family:'Oswald',sans-serif;font-size:21px;font-weight:600;color:#fff;letter-spacing:.03em;
  text-shadow:0 2px 12px rgba(120,20,10,.45);
  backface-visibility:hidden;
  opacity:0;pointer-events:none;
}
/* incoming word: flips down into place like a water-slick page turn */
.ticker-word.is-active{
  animation:tickerFlipIn .62s var(--ease-liquid) forwards;
  z-index:2;
}
/* outgoing word: lifts up and away */
.ticker-word.is-leaving{
  animation:tickerFlipOut .5s ease forwards;
  z-index:1;
}
@keyframes tickerFlipIn{
  0%{opacity:0;transform:rotateX(-88deg) translateY(14px);filter:drop-shadow(0 10px 8px rgba(90,10,0,.35))}
  60%{opacity:1}
  100%{opacity:1;transform:rotateX(0deg) translateY(0)}
}
@keyframes tickerFlipOut{
  0%{opacity:1;transform:rotateX(0deg)}
  100%{opacity:0;transform:rotateX(70deg) translateY(-16px)}
}
.ticker-progress{
  width:110px;height:3px;border-radius:99px;flex:none;
  background:rgba(255,255,255,.28);overflow:hidden;
}
.ticker-progress i{
  display:block;width:100%;height:100%;
  background:#fff;border-radius:99px;
  transform-origin:right center;   /* RTL: fills right → left */
  transform:scaleX(0);
}
.ticker-progress i.run{animation:tickerBar 2.4s linear forwards}
@keyframes tickerBar{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@media(max-width:600px){
  .ticker{gap:14px}
  .ticker-flip{width:150px}
  .ticker-progress{width:70px}
  .ticker-label{font-size:10.5px}
}

/* ---------- trust / certs ---------- */
.trust{background:transparent}
.trust-grid{
  display:grid;grid-template-columns:1fr 1.15fr;gap:70px;align-items:center;
}
.cert-gallery{
  display:grid;grid-template-columns:1fr 1fr;gap:18px;
}
.cert-thumb{
  position:relative;border-radius:18px;overflow:hidden;
  box-shadow:0 24px 48px -22px rgba(20,25,20,.35), inset 0 0 0 1px rgba(255,255,255,.5);
  border:1px solid rgba(255,255,255,.5);
  cursor:pointer;
  background:var(--glass-light-bg-strong);
  backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  transition:transform .4s var(--ease-liquid), box-shadow .4s ease;
}
.cert-thumb:hover{transform:translateY(-6px) scale(1.015);box-shadow:0 34px 60px -20px rgba(20,25,20,.4)}
.cert-thumb img{width:100%;display:block;aspect-ratio:3/4;object-fit:cover;object-position:top}
.cert-thumb .cert-label{
  position:absolute;bottom:0;left:0;right:0;
  background:linear-gradient(to top, rgba(18,21,26,.92), transparent);
  color:#fff;
  padding:20px 12px 10px;
  font-family:'JetBrains Mono',monospace;direction:ltr;
  font-size:12px;font-weight:600;letter-spacing:.03em;
  text-align:center;
  text-shadow:0 1px 4px rgba(0,0,0,.5);
}
.cert-thumb .zoom-hint{
  position:absolute;top:10px;left:10px;
  width:30px;height:30px;border-radius:50%;
  background:rgba(18,21,26,.55);
  backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;
  opacity:0;transition:opacity .25s ease;
}
.cert-thumb:hover .zoom-hint{opacity:1}
.iso-badges{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
.iso-chips{
  display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;
}
.iso-chip{
  border:1px solid rgba(255,255,255,.55);
  border-radius:14px;
  padding:10px 16px;
  font-family:'JetBrains Mono',monospace;direction:ltr;
  font-size:13px;font-weight:600;color:#2f3439;
  display:flex;align-items:center;gap:8px;
  background:var(--glass-light-bg);
  backdrop-filter:blur(16px) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(16px) saturate(var(--glass-sat));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.7), 0 8px 18px -10px rgba(20,25,20,.15);
  transition:transform .3s var(--ease-liquid);
}
.iso-chip:hover{transform:translateY(-2px)}
.iso-chip .ring{--size:16px}
/* IMS chip text is Persian — keep it readable inside the ltr mono row */
.iso-chip .fa-label{font-family:'Vazirmatn',sans-serif;direction:rtl}
.trust-list{margin-top:34px;display:flex;flex-direction:column;gap:20px}
.trust-item{display:flex;gap:16px;align-items:flex-start}
.trust-item .ring{--size:38px}
.trust-item b{display:block;font-size:15.5px;margin-bottom:3px}
.trust-item p{color:#565a5e;font-size:14.5px}

/* lightbox */
.lightbox{
  position:fixed;inset:0;z-index:200;
  background:rgba(10,12,14,.82);
  backdrop-filter:blur(6px);
  display:none;
  align-items:center;justify-content:center;
  padding:40px 20px;
}
.lightbox.open{display:flex}
.lightbox img{max-width:min(560px,90vw);max-height:88vh;border-radius:14px;box-shadow:0 40px 90px rgba(0,0,0,.6)}
.lightbox-close{
  position:absolute;top:24px;left:24px;
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);
  backdrop-filter:blur(10px);
  color:#fff;font-size:20px;display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:transform .25s var(--ease-liquid), background .25s ease;
}
.lightbox-close:hover{background:rgba(255,255,255,.22);transform:rotate(90deg)}
@media(max-width:760px){
  .cert-gallery{gap:12px}
}

/* ---------- why us ---------- */
.why{
  background:linear-gradient(180deg, var(--graphite) 0%, #171b21 100%);
  color:#fff;
  position:relative;
  isolation:isolate;
}
.why::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 10% 90%, rgba(230,57,42,.18), transparent 42%),
    radial-gradient(circle at 90% 10%, rgba(46,157,111,.14), transparent 45%);
  pointer-events:none;
}
.why-header{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:56px;flex-wrap:wrap;position:relative;z-index:1}
/* white heading only inside the dark .why section — the same
   layout is reused on light sections (blog teaser) where the
   text must stay dark */
.why .why-header .h2{color:#fff}
.why .why-header .lede{color:#c3c5c7}
.why-header .h2{color:var(--ink)}
.why-header .lede{color:#43474c}
.why-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  position:relative;z-index:1;
}
.why-card{
  background:var(--glass-dark-bg);
  backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  border:1px solid var(--glass-dark-border);
  border-radius:20px;
  padding:38px 32px;
  transition:transform .4s var(--ease-liquid), background .3s ease, box-shadow .4s ease, border-color .3s ease;
  position:relative;
  overflow:hidden;
}
.why-card::before{
  content:"";
  position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.4), transparent);
}
.why-card:hover{
  background:rgba(230,57,42,.1);
  border-color:rgba(230,57,42,.35);
  transform:translateY(-6px);
  box-shadow:0 24px 50px -20px rgba(0,0,0,.5);
}
.why-card .ring{--size:52px;margin-bottom:22px}
.why-card h3{font-family:'Oswald',sans-serif;font-size:19px;font-weight:600;margin-bottom:10px;color:#fff}
.why-card p{color:#bfc2c5;font-size:14.5px}
@media(max-width:860px){
  .why-grid{grid-template-columns:1fr}
}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:70px;align-items:center}
.about-photo{position:relative}
.about-photo-frame{
  border-radius:22px;overflow:hidden;position:relative;
  box-shadow:0 34px 80px -25px rgba(20,25,20,.4), inset 0 0 0 1px rgba(255,255,255,.4);
}
.about-photo-frame img{aspect-ratio:4/5;object-fit:cover;width:100%}
.about-num{
  position:absolute;top:-22px;right:-22px;
  background:var(--glass-dark-bg-strong);
  backdrop-filter:blur(16px) saturate(1.5);
  -webkit-backdrop-filter:blur(16px) saturate(1.5);
  color:#fff;
  width:96px;height:96px;border-radius:50%;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-family:'Oswald',sans-serif;
  box-shadow:0 18px 36px -10px rgba(0,0,0,.45);
  border:3px solid var(--red);
}
.about-num b{font-size:26px;line-height:1}
.about-num span{font-size:10px;color:#d0d2d4;margin-top:3px}
.about-body p{color:#43474c;margin-bottom:16px;font-size:15.5px}
.about-body p:first-of-type{font-size:18px;color:var(--ink);font-weight:600;line-height:1.6}
.timeline{margin-top:34px;display:flex;flex-direction:column}
.timeline-item{
  display:flex;gap:20px;padding:18px 22px;border-radius:14px;
  background:var(--glass-light-bg);
  backdrop-filter:blur(14px) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(14px) saturate(var(--glass-sat));
  border:1px solid rgba(255,255,255,.55);
  margin-bottom:10px;
  transition:transform .3s var(--ease-liquid);
}
.timeline-item:hover{transform:translateX(-4px)}
[dir="ltr"] .timeline-item:hover{transform:translateX(4px)}
.timeline-item .yr{font-family:'JetBrains Mono',monospace;direction:ltr;color:var(--red-text);font-weight:700;font-size:14.5px;flex:none;width:90px}
.timeline-item p{color:#43474c;font-size:14.5px;margin:0}
@media(max-width:860px){
  .about-grid{grid-template-columns:1fr}
  .about-num{width:76px;height:76px;top:-16px;right:-16px}
  .about-num b{font-size:20px}
}

/* ---------- products ---------- */
.products{background:transparent}
.tabs{
  display:flex;gap:10px;flex-wrap:wrap;
  margin-bottom:46px;
  padding:8px;
  border-radius:18px;
  background:var(--glass-light-bg);
  backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  border:1px solid rgba(255,255,255,.55);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.7), 0 10px 24px -14px rgba(20,25,20,.15);
}
.tab-btn{
  font-family:'Oswald',sans-serif;
  font-size:15px;font-weight:500;
  padding:12px 20px;
  color:#5a5e63;
  border-radius:12px;
  cursor:pointer;
  background:none;border:none;
  position:relative;overflow:hidden;
  transition:color .3s ease, background .3s var(--ease-liquid), transform .3s var(--ease-liquid);
}
.tab-btn{color:#4a4e53}
.tab-btn.active,.tab-btn:hover{color:var(--ink)}
.tab-btn.active{
  background:linear-gradient(155deg, rgba(255,255,255,.9), rgba(255,255,255,.6));
  box-shadow:0 8px 18px -8px rgba(230,57,42,.3), inset 0 0 0 1px rgba(230,57,42,.25);
  color:var(--red-dark);
}
.tab-btn:hover{transform:translateY(-1px)}

.prod-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
@media(max-width:1080px){.prod-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.prod-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.prod-grid{grid-template-columns:1fr}}

.prod-panel{display:none}
.prod-panel.active{display:block;animation:fadein .5s var(--ease-liquid)}
@keyframes fadein{from{opacity:0;transform:translateY(10px) scale(.99)}to{opacity:1;transform:translateY(0) scale(1)}}

.pcard{
  background:var(--glass-light-bg-strong);
  backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  border-radius:18px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.6);
  transition:box-shadow .4s var(--ease-liquid), transform .4s var(--ease-liquid), border-color .3s ease;
  position:relative;
}
.pcard::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.9), transparent);
  z-index:2;
}
.pcard:hover{
  box-shadow:0 28px 56px -22px rgba(20,25,20,.3), 0 0 0 1px rgba(230,57,42,.15);
  transform:translateY(-6px);
  border-color:rgba(230,57,42,.3);
}
.pcard-img{
  aspect-ratio:1/1;
  background:#fff;
  position:relative;
  overflow:hidden;
}
.pcard-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease-liquid)}
.pcard:hover .pcard-img img{transform:scale(1.08)}
.pcard-ring{
  position:absolute;top:12px;left:12px;--size:30px;opacity:.85;
}
.pcard-body{padding:18px 18px 20px}
.pcard-body .cat{font-family:'JetBrains Mono',monospace;direction:ltr;font-size:11px;color:var(--red-text);letter-spacing:.06em;font-weight:600;margin-bottom:6px;display:block}
.pcard-body h4{font-size:15.5px;font-weight:700;line-height:1.4;margin-bottom:8px}
.pcard-body .size{
  display:inline-block;
  font-family:'JetBrains Mono',monospace;direction:ltr;
  font-size:12px;font-weight:600;
  background:rgba(255,255,255,.75);
  border:1px solid rgba(255,255,255,.8);
  padding:4px 10px;border-radius:8px;color:#3d4145;
  backdrop-filter:blur(6px);
}

/* Product card links */
a.pcard-link{text-decoration:none;color:inherit;display:block}
a.pcard-link .pcard{height:100%;transition:transform .4s var(--ease-liquid), box-shadow .4s var(--ease-liquid), border-color .3s ease}
a.pcard-link:hover .pcard{
  transform:translateY(-6px);
  box-shadow:0 28px 56px -22px rgba(20,25,20,.3), 0 0 0 1px rgba(230,57,42,.15);
  border-color:rgba(230,57,42,.3);
}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--red),var(--red-dark));
  color:#fff;
  position:relative;overflow:hidden;
  isolation:isolate;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(-45deg, rgba(255,255,255,.08) 0 2px, transparent 2px 26px);
  pointer-events:none;
}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap;position:relative;z-index:1;text-align:right}
.cta-inner h2{font-family:'Oswald',sans-serif;font-size:clamp(24px,3vw,34px);font-weight:600;max-width:560px}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap;flex:none}
@media(max-width:760px){
  .cta-inner{text-align:center;justify-content:center}
  .cta-actions{justify-content:center;width:100%}
}

/* ---------- footer ---------- */
footer{
  background:linear-gradient(180deg, var(--graphite) 0%, #0e1114 100%);
  color:#c3c5c7;padding-top:80px;
  position:relative;isolation:isolate;
}
footer::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 80% 0%, rgba(230,57,42,.14), transparent 45%);
  pointer-events:none;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:50px;position:relative;z-index:1}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{color:#a8abae;font-size:14px;max-width:280px;margin-bottom:20px}
.footer-social{display:flex;gap:12px}
.footer-social a{
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--glass-dark-border);
  background:var(--glass-dark-bg);
  backdrop-filter:blur(10px);
  display:flex;align-items:center;justify-content:center;
  transition:all .35s var(--ease-liquid);
  position:relative;overflow:hidden;
}
.footer-social a:hover{background:var(--red);border-color:var(--red);transform:translateY(-3px) scale(1.08);box-shadow:0 10px 22px -6px var(--red-glow)}
footer h5{font-family:'Oswald',sans-serif;color:#fff;font-size:14.5px;letter-spacing:.05em;margin-bottom:22px;position:relative;z-index:1}
footer ul{position:relative;z-index:1}
footer ul li{margin-bottom:13px}
footer ul li a{color:#b6b9bc;font-size:14.5px;transition:color .2s ease}
footer ul li a:hover{color:#fff}
.foot-contact li{display:flex;gap:10px;color:#b6b9bc;font-size:14px;align-items:flex-start;margin-bottom:16px}
.foot-contact .mono{color:#d7d8d9}
.foot-bottom{
  border-top:1px solid var(--glass-dark-border);
  margin-top:60px;padding:26px 0;
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  font-size:13px;color:#9a9ea3;
  position:relative;z-index:1;
}
@media(max-width:860px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media(max-width:560px){
  .footer-grid{grid-template-columns:1fr}
}

/* reveal on scroll — compositor-only (opacity+transform, NO filter:
   blur() forces full repaints on large grids and stutters scrolling).
   Stagger comes from --reveal-i set per sibling by script.js. */
.reveal{
  opacity:0;
  transform:translateY(26px);
  transition:opacity .7s var(--ease-liquid), transform .7s var(--ease-liquid);
  transition-delay:calc(var(--reveal-i, 0) * 70ms);
  will-change:opacity, transform;
}
.reveal.in{opacity:1;transform:translateY(0)}
.no-js .reveal{opacity:1;transform:none}
.reveal.in{will-change:auto}

/* keep the reveal transition authoritative when a revealed element
   (blog-card, pcard-link…) defines its own hover transition later
   in the cascade — otherwise those cards snap in with no animation */
.blog-card.reveal,
a.pcard-link.reveal{
  transition:opacity .7s var(--ease-liquid), transform .7s var(--ease-liquid);
}
.blog-card.reveal.in,
a.pcard-link.reveal.in{
  transition:transform .4s var(--ease-liquid), box-shadow .4s ease;
}

/* focus visibility */
a:focus-visible,button:focus-visible{outline:2px solid var(--red);outline-offset:3px}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; transition-delay:0ms !important}
  .reveal{opacity:1;transform:none;transition:none}
  .liquid-backdrop canvas{display:none !important}
  html{scroll-behavior:auto}
}

/* ---------- blog teaser (home) ---------- */
.blog-teaser{background:transparent}
.blog-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.blog-card{
  display:block;
  background:var(--glass-light-bg-strong);
  backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  border-radius:20px;overflow:hidden;
  border:1px solid rgba(255,255,255,.6);
  transition:transform .4s var(--ease-liquid), box-shadow .4s ease;
}
.blog-card:hover{transform:translateY(-6px);box-shadow:0 26px 50px -22px rgba(20,25,20,.3)}
.blog-card-img{aspect-ratio:4/3;overflow:hidden;background:#e6e3dc}
.blog-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease-liquid)}
.blog-card:hover .blog-card-img img{transform:scale(1.06)}
.blog-card-body{padding:20px}
.blog-card-body .cat{
  font-family:'JetBrains Mono',monospace;direction:ltr;display:inline-block;
  font-size:11.5px;font-weight:700;color:var(--red-text);letter-spacing:.06em;margin-bottom:10px;
}
.blog-card-body h4{font-size:16.5px;font-weight:700;margin-bottom:8px;line-height:1.5}
.blog-card-body p{font-size:13.5px;color:#565a5e;line-height:1.7}
@media(max-width:1080px){.blog-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.blog-grid{grid-template-columns:1fr}}

/* ---------- inner-page hero (blog index / articles / cooperation) ---------- */
.page-hero{
  background:transparent;
  position:relative;overflow:hidden;
  padding:170px 0 60px;
  isolation:isolate;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(165deg, rgba(18,21,26,.95) 0%, rgba(18,21,26,.87) 60%, rgba(24,30,38,.93) 100%);
  z-index:-2;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 85% 20%, rgba(230,57,42,.24), transparent 45%);
  pointer-events:none;
  z-index:-1;
}
.page-hero .wrap{position:relative;z-index:1}
.breadcrumb{
  font-family:'JetBrains Mono',monospace;direction:ltr;font-size:12.5px;color:var(--steel-text);
  display:flex;align-items:center;gap:8px;margin-bottom:18px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--steel-text);transition:color .2s ease}
.breadcrumb a:hover{color:var(--red-text)}
/* breadcrumb inside the dark page-hero slab */
.page-hero .breadcrumb,.page-hero .breadcrumb a{color:#b6b9bc}
.page-hero .breadcrumb a:hover{color:#fff}
.page-hero h1{
  font-family:'Oswald',sans-serif;color:#fff;font-weight:700;
  font-size:clamp(28px,4.4vw,46px);line-height:1.25;
}
.page-hero p.lede{margin-top:16px;color:#cfcfd1}

/* ---------- blog index ---------- */
.blog-index-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
@media(max-width:760px){.blog-index-grid{grid-template-columns:1fr}}

/* ---------- article ---------- */
.article-wrap{max-width:760px;margin:0 auto;padding:0 28px}
.article-meta{
  display:flex;gap:18px;align-items:center;flex-wrap:wrap;
  font-family:'JetBrains Mono',monospace;direction:ltr;font-size:12.5px;color:var(--steel-text);
  margin-bottom:18px;
}
.article-hero-img{border-radius:20px;overflow:hidden;margin:34px 0;box-shadow:0 34px 70px -30px rgba(20,25,20,.4)}
.article-hero-img img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-body h2{font-size:23px;margin:42px 0 16px}
.article-body h3{font-size:18.5px;margin:30px 0 12px}
.article-body p{color:#3d4145;font-size:16px;margin-bottom:18px}
.article-body ul{margin:0 0 22px;padding-right:22px;list-style:disc}
[dir="ltr"] .article-body ul{padding-right:0;padding-left:22px}
.article-body ul li{color:#3d4145;font-size:16px;margin-bottom:10px;line-height:1.8}
.article-body strong{color:var(--ink)}
.article-callout{
  background:var(--glass-light-bg);
  backdrop-filter:blur(16px) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(16px) saturate(var(--glass-sat));
  border-radius:14px;
  padding:20px 24px;margin:30px 0;
  border:1px solid rgba(255,255,255,.55);
  border-right:4px solid var(--red);
}
[dir="ltr"] .article-callout{border-right:1px solid rgba(255,255,255,.55);border-left:4px solid var(--red)}
.article-callout p{margin:0;font-size:15px;color:#43474c}
.article-divider{border-top:1px solid rgba(0,0,0,.08);margin:50px 0}
.related-heading{font-family:'Oswald',sans-serif;font-size:19px;font-weight:600;margin-bottom:22px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:760px){.related-grid{grid-template-columns:1fr}}

/* ---------- cooperation page ---------- */
/* story body copy must read as plain black on the light pane */
.coop-story p{color:var(--ink);margin-bottom:16px;font-size:15.5px}
/* ">": the CEO quote's <p> must NOT match — its parent is the blockquote */
.coop-story > p:first-of-type{font-size:18px;color:var(--ink);font-weight:600;line-height:1.6}
.ceo-quote{
  /* liquid glass card on the light page: translucent white pane,
     red aura drifting behind it, glossy top edge */
  background:linear-gradient(150deg, rgba(255,255,255,.66), rgba(255,255,255,.38) 55%, rgba(255,236,232,.42));
  backdrop-filter:blur(var(--glass-blur-strong)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur-strong)) saturate(var(--glass-sat));
  color:var(--ink);border-radius:24px;
  padding:44px 40px 36px;margin-top:40px;position:relative;
  overflow:hidden;isolation:isolate;
  border:1px solid rgba(255,255,255,.7);
  box-shadow:
    0 30px 70px -32px rgba(160,30,20,.28),
    0 12px 34px -18px rgba(20,25,35,.22),
    inset 0 1px 0 rgba(255,255,255,.85);
}
/* red glow orb bleeding through the glass */
.ceo-quote::after{
  content:"";position:absolute;z-index:-1;
  width:280px;height:280px;border-radius:50%;
  left:-90px;bottom:-120px;
  background:radial-gradient(circle, var(--red-glow), transparent 70%);
  filter:blur(18px);
  animation:quoteGlow 9s ease-in-out infinite alternate;
}
@keyframes quoteGlow{
  from{transform:translate(0,0) scale(1);opacity:.55}
  to{transform:translate(46px,-26px) scale(1.15);opacity:.9}
}
/* glossy top highlight like .why-card::before */
.ceo-quote::before{
  content:"\201C";
  position:absolute;top:2px;right:26px;
  font-family:Georgia,serif;font-size:88px;line-height:1;
  background:linear-gradient(160deg, var(--red), #ff8a72);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  z-index:1;
}
/* NOTE: never bundle .coop-story p into these rules — the quote sits
   inside .coop-story, so a shared selector bleaches the story text */
.ceo-quote p{
  color:var(--ink);font-size:16.5px;line-height:1.95;font-weight:500;
  position:relative;z-index:1;margin-bottom:0;
}
/* <footer class="who"> inherits the site-footer dark slab (footer{} rule);
   strip it back so only the glass pill stays */
.ceo-quote .who{
  margin-top:22px;position:relative;z-index:1;
  display:flex;align-items:center;gap:12px;
  background:none;padding:0;isolation:auto;color:inherit;
}
.ceo-quote .who::before{content:none}
.ceo-quote .who b{
  font-family:'Oswald',sans-serif;font-weight:600;font-size:14.5px;color:var(--red-dark);
  background:rgba(230,57,42,.09);border:1px solid rgba(230,57,42,.22);
  border-radius:999px;padding:7px 16px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.7);
}
.ceo-quote .who span{font-size:12.5px;font-weight:400;color:#5a5f66}

.coop-tabs{
  display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px;padding:8px;border-radius:16px;
  background:var(--glass-light-bg);
  backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  border:1px solid rgba(255,255,255,.55);
}
.coop-tab-btn{
  font-family:'Oswald',sans-serif;font-size:15px;font-weight:500;padding:11px 18px;
  color:#4a4e53;border-radius:10px;cursor:pointer;
  background:none;border:none;
  position:relative;overflow:hidden;
  transition:color .25s ease, background .3s var(--ease-liquid), transform .3s var(--ease-liquid);
}
.coop-tab-btn.active,.coop-tab-btn:hover{color:var(--red-dark)}
.coop-tab-btn.active{background:rgba(255,255,255,.75);box-shadow:inset 0 0 0 1px rgba(230,57,42,.25)}
.coop-tab-btn:hover{transform:translateY(-1px)}
.coop-panel{display:none}
.coop-panel.active{display:block;animation:fadein .5s var(--ease-liquid)}

.form-card{
  background:var(--glass-light-bg-strong);
  backdrop-filter:blur(var(--glass-blur-strong)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur-strong)) saturate(var(--glass-sat));
  border-radius:24px;padding:38px;
  border:1px solid rgba(255,255,255,.65);
  box-shadow:0 30px 60px -30px rgba(20,25,20,.3), inset 0 1px 0 rgba(255,255,255,.8);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600;color:var(--ink)}
.field input,.field select,.field textarea{
  border:1.5px solid rgba(255,255,255,.7);border-radius:12px;padding:12px 14px;font-family:'Vazirmatn',sans-serif;
  font-size:14.5px;color:var(--ink);
  background:rgba(255,255,255,.55);
  backdrop-filter:blur(8px);
  transition:border-color .25s ease, background .25s ease, box-shadow .25s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--red);background:rgba(255,255,255,.8);box-shadow:0 0 0 4px rgba(230,57,42,.12)}
.field textarea{resize:vertical;min-height:110px}
.form-note{font-size:13px;color:var(--steel-text);margin-bottom:26px;line-height:1.8}
.form-submit{margin-top:8px}
.form-success{
  display:none;background:rgba(46,157,111,.16);border:1.5px solid var(--green);color:#144d36;
  font-weight:600;
  backdrop-filter:blur(10px);
  padding:16px 20px;border-radius:14px;font-size:14.5px;margin-top:20px;
}
.form-success.show{display:block;animation:fadein .5s var(--ease-liquid)}

/* ---------- language switcher ---------- */
.lang-switch{position:relative;flex:none}
.lang-switch-btn{
  display:flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);
  backdrop-filter:blur(12px) saturate(1.4);
  -webkit-backdrop-filter:blur(12px) saturate(1.4);
  color:#fff;font-family:'JetBrains Mono',monospace;direction:ltr;
  font-size:13px;font-weight:600;letter-spacing:.03em;
  padding:8px 12px;border-radius:10px;cursor:pointer;
  transition:background .25s ease,border-color .25s ease, transform .3s var(--ease-liquid);
  position:relative;overflow:hidden;
}
.lang-switch-btn:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.4);transform:translateY(-1px)}
.lang-switch-btn svg{flex:none}
.lang-switch-list{
  position:absolute;top:calc(100% + 8px);left:0;right:auto;min-width:150px;
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(24px) saturate(1.6);
  -webkit-backdrop-filter:blur(24px) saturate(1.6);
  border-radius:14px;overflow:hidden;
  box-shadow:0 20px 44px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.8);
  border:1px solid rgba(255,255,255,.7);
  opacity:0;visibility:hidden;transform:translateY(-8px) scale(.96);
  transition:opacity .25s ease,transform .35s var(--ease-liquid),visibility .25s ease;
  z-index:200;
}
[dir="rtl"] .lang-switch-list{left:auto;right:0}
.lang-switch.open .lang-switch-list{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.lang-switch-list button{
  display:flex;width:100%;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 16px;font-size:14px;font-weight:500;color:var(--ink);
  background:none;border:none;cursor:pointer;text-align:inherit;
  font-family:'Vazirmatn',sans-serif;
  transition:background .2s ease;
}
.lang-switch-list button:hover{background:rgba(230,57,42,.08)}
.lang-switch-list button.active{color:var(--red);font-weight:700}
.lang-switch-list button .code{font-family:'JetBrains Mono',monospace;direction:ltr;font-size:11px;color:var(--steel-text)}
.mobile-lang-switch{display:flex;gap:10px;margin-top:6px}
.mobile-lang-switch button{
  padding:9px 18px;border-radius:20px;border:1.5px solid rgba(255,255,255,.3);
  background:rgba(255,255,255,.06);backdrop-filter:blur(8px);
  color:#fff;font-size:14px;font-family:'Vazirmatn',sans-serif;cursor:pointer;
  transition:background .25s ease, border-color .25s ease;
}
.mobile-lang-switch button.active{background:var(--red);border-color:var(--red)}
html[dir="ltr"] body{direction:ltr}

/* Floating contact buttons */
.float-contact{
  position:fixed;
  bottom:24px;
  left:24px;
  z-index:90;
  display:flex;flex-direction:column;gap:12px;
}
[dir="rtl"] .float-contact{left:auto;right:24px}
.float-contact a{
  width:54px;height:54px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(0,0,0,.3), inset 0 1px 0 rgba(255,255,255,.35);
  border:1px solid rgba(255,255,255,.3);
  backdrop-filter:blur(10px);
  transition:transform .4s var(--ease-jelly), box-shadow .35s ease;
  position:relative;overflow:hidden;
}
.float-contact a:hover{
  transform:scale(1.12) translateY(-4px);
  box-shadow:0 16px 34px rgba(0,0,0,.35), 0 0 26px rgba(255,255,255,.2);
}
.float-contact .fc-wa{background:linear-gradient(145deg,#34e37f,#25D366,#128C7E)}
.float-contact .fc-tg{background:linear-gradient(145deg,#4fc3f7,#2AABEE,#0088cc)}
.float-contact a svg{width:26px;height:26px;fill:#fff;position:relative;z-index:1}
@media(max-width:600px){
  .float-contact{bottom:16px;left:16px}
  [dir="rtl"] .float-contact{right:16px;left:auto}
  .float-contact a{width:50px;height:50px}
}

/* Product detail pages compatibility */
.product-detail .pd-img{
  border-radius:20px;
  overflow:hidden;
  box-shadow:0 24px 60px -18px rgba(20,25,20,.3);
  border:1px solid rgba(255,255,255,.5);
  background:var(--glass-light-bg-strong);
  backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  -webkit-backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
}
.pd-cta .btn{margin-bottom:8px}

/* =========================================================
   MOBILE LAYOUT REFINEMENTS
   Desktop layout is final; these rules only tighten the
   phone experience (≤560px) without touching it above.
   ========================================================= */
@media(max-width:600px){
  /* --- header: slimmer bar, no wrapping CTA --- */
  header{padding:12px 0}
  header.scrolled{padding:8px 0}
  .nav-inner{gap:12px}
  .brand{gap:8px}
  .brand img{width:36px}
  .brand-name{font-size:17px}
  .nav-cta{gap:8px}
  /* keep استعلام قیمت on ONE line — shrink instead of wrap */
  .nav-cta .btn{
    padding:9px 14px;font-size:13px;
    white-space:nowrap;flex:none;
  }
  #langSwitchMount .lang-switch-btn{display:none}   /* menu has its own switcher */
  .burger{width:24px}

  /* --- hero: photo first, compact actions side by side --- */
  .hero{padding-top:96px;min-height:0}
  .hero-actions{gap:10px;margin-bottom:32px}
  .hero-actions .btn{
    flex:1 1 0;
    padding:13px 18px;font-size:14px;
    justify-content:center;
  }
  .hero p.lede{font-size:16px;margin-bottom:26px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-stats > *{padding:14px 16px}

  /* --- trust / certificates: stack, gallery full width --- */
  .trust-grid{grid-template-columns:1fr;gap:34px}
  .cert-gallery{grid-template-columns:1fr 1fr;gap:12px}
  .iso-chips{flex-wrap:wrap;gap:8px}
  .iso-chip{padding:8px 12px;font-size:12px}

  /* --- about: badge inside the frame edge --- */
  .about-grid{gap:44px}
  .about-num{top:-14px;right:-6px;width:68px;height:68px;border-width:2.5px}
  .about-num b{font-size:17px}
  .timeline-item{padding:14px 16px;gap:14px}
  .timeline-item .yr{width:auto;font-size:13px}

  /* --- products: roomier single cards --- */
  .prod-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .pcard-body{padding:13px 13px 15px}
  .pcard-body h4{font-size:13.5px}
  .tabs{padding:6px;margin-bottom:30px;gap:6px}
  .tab-btn{padding:9px 13px;font-size:13.5px;flex:1 1 auto}

  /* --- why / blog teaser headers --- */
  .why-header{margin-bottom:34px}
  .why-card{padding:26px 22px}

  /* --- cta band + contact form --- */
  .cta-inner{text-align:center}
  .cta-inner h2{font-size:21px}
  .form-card{padding:24px 18px}

  /* --- footer: single column, centered brand block --- */
  footer{padding-top:56px}
  .footer-brand p{max-width:none}
  .foot-bottom{justify-content:center;text-align:center}
}
/* very small phones: product cards stay 2-up but tighter */
@media(max-width:380px){
  .prod-grid{gap:9px}
  .pcard-body{padding:11px 11px 13px}
  .hero-actions .btn{padding:12px 10px;font-size:13.5px}
}

/* =========================================================
   WORDPRESS THEME ADDITIONS — article pages, archive, pager
   ========================================================= */
.single-article{max-width:800px;margin:0 auto}
.article-content{
  font-size:16px;line-height:2;color:#43474c;
  background:var(--glass-light-bg-strong);
  backdrop-filter:blur(var(--glass-blur)) saturate(var(--glass-sat));
  border-radius:22px;padding:38px;
  border:1px solid rgba(255,255,255,.6);
  box-shadow:0 30px 60px -30px rgba(20,25,20,.25), inset 0 1px 0 rgba(255,255,255,.7);
}
.article-content h2,.article-content h3{color:var(--ink);margin:28px 0 12px}
.article-content h3{font-size:19px}
.article-content p{margin-bottom:14px}
.article-content ul{list-style:none;padding:0;margin-bottom:14px}
.article-content li{position:relative;padding-right:24px;margin-bottom:8px}
.article-content li::before{
  content:"";position:absolute;right:0;top:.72em;
  width:8px;height:8px;border-radius:50%;
  background:linear-gradient(145deg,#ef4c3b,var(--red-dark));
}
.article-content a{color:var(--red-dark);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.article-content img{border-radius:14px;margin:10px 0}
.single-thumb{border-radius:22px;overflow:hidden;margin-bottom:34px;box-shadow:0 34px 80px -25px rgba(20,25,20,.35)}
.single-thumb img{width:100%;display:block}
.pager{margin-top:44px;display:flex;justify-content:center}
.pager .page-numbers{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:42px;height:42px;padding:0 12px;margin:0 4px;
  border-radius:12px;background:rgba(255,255,255,.55);
  backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.65);
  color:var(--ink);font-weight:600;
}
.pager .page-numbers.current{background:var(--red);color:#fff;border-color:var(--red)}
.form-error{
  display:block;background:rgba(230,57,42,.12);border:1.5px solid var(--red);color:#7a1409;
  font-weight:600;padding:14px 18px;border-radius:14px;font-size:14.5px;margin-bottom:20px;
}
.custom-logo{max-height:44px;width:auto;border-radius:50%}
.related-products{margin-top:60px}
.related-products h3{font-family:'Oswald',sans-serif;font-size:22px;margin-bottom:22px;color:var(--ink)}

/* =========================================================
   PRODUCT DETAIL LAYOUT (was inline in static pages)
   ========================================================= */
.product-detail{max-width:1000px;margin:0 auto;padding:40px 20px}
.product-detail .breadcrumb{font-size:14px;color:var(--steel-text);margin-bottom:24px}
.product-detail .breadcrumb a{color:var(--steel-text);text-decoration:none}
.product-detail .breadcrumb a:hover{color:var(--red)}
.pd-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
@media(max-width:768px){.pd-grid{grid-template-columns:1fr}}
.pd-img{background:#fff;border-radius:20px;overflow:hidden;display:block}
.pd-img img{width:100%;height:auto;display:block}
.pd-info h1{font-size:28px;margin:0 0 12px;color:var(--ink)}
.pd-info .cat{display:inline-block;background:var(--red);color:#fff;padding:4px 12px;border-radius:6px;font-size:12px;font-weight:700;margin-bottom:16px}
.pd-info .size{font-family:'JetBrains Mono',monospace;font-size:18px;color:var(--steel-text)}
.pd-desc{margin-top:24px;line-height:2;color:#43474c}
.pd-desc h3{margin:24px 0 12px;font-size:18px;color:var(--ink)}
.pd-desc ul{padding-right:22px;margin-bottom:14px}
.pd-desc li{position:relative;padding-right:18px;margin-bottom:8px;list-style:none}
.pd-desc li::before{
  content:"";position:absolute;right:-8px;top:.75em;
  width:7px;height:7px;border-radius:50%;
  background:linear-gradient(145deg,#ef4c3b,var(--red-dark));
}
.pd-cta{margin-top:32px;display:flex;gap:12px;flex-wrap:wrap}
.pd-cta .btn{margin-bottom:8px}

/* blog index grid (home.php) */
.blog-index-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:1080px){.blog-index-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.blog-index-grid{grid-template-columns:1fr}}
.related-title{font-family:'Oswald',sans-serif;font-size:22px;margin-bottom:22px;color:var(--ink)}