:root {
  --blue-900:#001A33; --blue-800:#002952; --blue-700:#003366; --blue-600:#00478F;
  --blue-500:#0055A4; --blue-400:#1A75D0; --blue-300:#4D9FE8; --blue-100:#E8F1F8;
  --blue-50:#F4F8FC;
  --neutral-900:#0A1929; --neutral-700:#1E293B; --neutral-500:#475569;
  --neutral-400:#64748B; --neutral-300:#94A3B8; --neutral-200:#CBD5E1;
  --neutral-100:#E2E8F0; --neutral-50:#F8FAFC; --white:#FFFFFF;
  --accent:#00A6FB; --wp-green:#25D366; --wp-green-dark:#1DA851;
  --font-display:'Archivo',sans-serif; --font-body:'Manrope',sans-serif; --font-mono:'JetBrains Mono',monospace;
  --container:1320px; --header-h:88px; --topbar-h:38px;
  --radius-sm:4px; --radius-md:8px;
  --shadow-sm:0 1px 2px rgba(0,26,51,.06);
  --shadow-md:0 4px 16px rgba(0,26,51,.08);
  --shadow-lg:0 20px 60px rgba(0,26,51,.12);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);color:var(--neutral-900);background:var(--white);line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* TOPBAR */
.topbar{background:var(--blue-900);color:var(--blue-100);font-size:13px;height:var(--topbar-h);display:flex;align-items:center}
.topbar .container{display:flex;justify-content:space-between;align-items:center}
.topbar-left{display:flex;gap:28px}
.topbar-left a{display:flex;align-items:center;gap:8px;opacity:.85;transition:opacity .2s}
.topbar-left a:hover{opacity:1;color:var(--white)}
.topbar-left svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2}
.lang-switch{display:flex;gap:4px;align-items:center;margin-left:40px;margin-right:16px;flex-shrink:0}
.lang-btn{color:var(--blue-100);font-family:var(--font-display);font-weight:600;font-size:12px;letter-spacing:.08em;padding:4px 10px;border-radius:var(--radius-sm);transition:all .2s}
.lang-btn.active{background:var(--blue-500);color:var(--white)}
.lang-btn:not(.active):hover{color:var(--white)}
.lang-divider{color:var(--blue-500);opacity:.5}

/* HEADER */
.header{position:sticky;top:0;z-index:100;background:var(--white);border-bottom:1px solid var(--neutral-100);height:var(--header-h);transition:all .3s var(--ease)}
.header.scrolled{box-shadow:var(--shadow-md);height:72px}
.header .container{height:100%;display:flex;align-items:center;justify-content:space-between;position:relative;}
.logo{display:flex;align-items:center;gap:12px}
.logo-img{height:44px;width:auto;object-fit:contain}
.logo-text{display:flex;flex-direction:column}
.logo-name{font-family:var(--font-display);font-weight:800;font-size:20px;color:var(--blue-900);letter-spacing:-.02em;line-height:1}
.logo-tag{font-family:var(--font-mono);font-size:9px;color:var(--neutral-500);letter-spacing:.15em;text-transform:uppercase;margin-top:3px}

.nav{display:flex;gap:4px;align-items:center;position:absolute;left:50%;transform:translateX(-50%);}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:6px;padding:12px 18px;font-weight:600;font-size:14.5px;color:var(--neutral-700);position:relative;transition:color .2s}
.nav-link::after{content:'';position:absolute;left:18px;right:18px;bottom:6px;height:2px;background:var(--blue-700);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav-link:hover{color:var(--blue-700)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--blue-700)}
.nav-link.active::after{transform:scaleX(1)}
.nav-link .caret{width:10px;height:10px;opacity:.5;transition:transform .2s}
.nav-item:hover .caret{transform:rotate(180deg)}

/* MEGAMENU FIX */
.megamenu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--white);
  min-width: 780px; 
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--neutral-100);
  padding: 28px;
  opacity: 0;
  visibility: hidden;
  transition: all .25s var(--ease);
  z-index: 200;
}
.nav-item:hover .megamenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.megamenu::before {
  content: '';
  position: absolute;
  top: -8px; left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 16px; height: 16px;
  background: var(--white);
  border-top: 1px solid var(--neutral-100);
  border-left: 1px solid var(--neutral-100);
}
.megamenu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}
.megamenu-section-title{grid-column:1/-1;font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--neutral-400);padding:10px 14px 4px;margin-top:4px}
.megamenu-section-title:first-child{margin-top:0}
.megamenu-item{padding:9px 14px;border-radius:var(--radius-sm);display:flex;align-items:center;gap:10px;transition:all .2s;font-size:14px;font-weight:500;color:var(--neutral-700);border:1px solid transparent;}
.megamenu-item:hover{background:var(--blue-50);color:var(--blue-700);border-color:var(--blue-100);transform:translateX(3px)}
.megamenu-item .dot{width:4px;height:4px;background:var(--neutral-300);border-radius:50%;flex-shrink:0;transition:background .2s}
.megamenu-item:hover .dot{background:var(--blue-700)}

.megamenu-item.with-icon { padding: 12px 14px; gap: 12px; align-items: flex-start; }
.megamenu-item.with-icon:hover { transform: translateX(4px); }
.megamenu-icon { width: 36px; height: 36px; background: var(--blue-50); border-radius: 6px; display: flex; align-items: center; justify-content: center; color: var(--blue-700); flex-shrink: 0; transition: all .2s; }
.megamenu-icon svg { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.megamenu-item:hover .megamenu-icon { background: var(--blue-700); color: var(--white); }
.megamenu-text { display: flex; flex-direction: column; margin-top: -1px; }
.megamenu-title { font-family: var(--font-display); font-weight: 600; font-size: 14px; color: var(--neutral-900); line-height: 1.2; }
.megamenu-desc { font-size: 11.5px; color: var(--neutral-500); margin-top: 4px; font-weight: 400; line-height: 1.3; }

.header-cta{display:flex;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;font-family:var(--font-display);font-weight:600;font-size:13.5px;letter-spacing:.02em;border-radius:var(--radius-sm);transition:all .25s var(--ease);position:relative;overflow:hidden}
.btn-primary{background:var(--blue-700);color:var(--white)}
.btn-primary:hover{background:var(--blue-900);transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,51,102,.3)}
.btn-outline{border:1.5px solid var(--neutral-200);color:var(--neutral-700)}
.btn-outline:hover{border-color:var(--blue-700);color:var(--blue-700)}
.btn-arrow{transition:transform .25s var(--ease)}
.btn:hover .btn-arrow{transform:translateX(4px)}
.wp-contact-only{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--wp-green);color:var(--white);transition:all .3s var(--ease)}
.wp-contact-only:hover{background:var(--wp-green-dark);transform:translateY(-2px);box-shadow:0 4px 12px rgba(37,211,102,.3)}
.wp-contact-only svg{width:20px;height:20px;fill:currentColor}

/* PRODUCT HERO BREADCRUMB */
.breadcrumb-section{background:linear-gradient(135deg,var(--blue-900) 0%,var(--blue-700) 100%);color:var(--white);padding:60px 0;position:relative;overflow:hidden}
.breadcrumb-section::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:60px 60px;mask-image:radial-gradient(ellipse at center,black 30%,transparent 80%)}
.breadcrumb{display:flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--blue-300);position:relative;z-index:2;margin-bottom:20px}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--white)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:var(--white)}
.page-title{font-family:var(--font-display);font-weight:800;font-size:clamp(36px,5vw,64px);line-height:1.05;letter-spacing:-.025em;color:var(--white);position:relative;z-index:2}
.page-subtitle{font-size:17px;line-height:1.65;color:rgba(255,255,255,.7);margin-top:16px;max-width:680px;position:relative;z-index:2}

/* PRODUCT DETAIL HERO */
.product-hero{padding:80px 0;background:var(--white)}
.product-hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.product-hero-img{aspect-ratio:4/3;border-radius:var(--radius-md);overflow:hidden;position:relative;box-shadow:var(--shadow-lg);background:var(--neutral-100)}
.product-hero-img img{width:100%;height:100%;object-fit:cover}
.product-hero-img::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,transparent 0%,rgba(0,26,51,.1) 100%);pointer-events:none}
.product-hero-content .section-eyebrow{display:inline-flex;align-items:center;gap:12px;font-family:var(--font-mono);font-size:12px;letter-spacing:.25em;text-transform:uppercase;color:var(--blue-700);margin-bottom:16px}
.product-hero-content .section-eyebrow::before{content:'';width:24px;height:1px;background:var(--blue-700)}
.product-hero-content h1{font-family:var(--font-display);font-weight:800;font-size:clamp(32px,4vw,48px);line-height:1.08;letter-spacing:-.025em;color:var(--neutral-900);margin-bottom:24px}
.product-hero-content .intro{font-size:16px;line-height:1.7;color:var(--neutral-500);margin-bottom:28px}
.spec-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:32px}
.spec-pill{padding:18px;background:var(--blue-50);border:1px solid var(--blue-100);border-radius:var(--radius-md);text-align:left}
.spec-pill-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--blue-700);margin-bottom:6px}
.spec-pill-value{font-family:var(--font-display);font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--neutral-900);line-height:1.2}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

/* CONTENT SECTIONS */
.content-section{padding:80px 0;background:var(--white)}
.content-section.alt{background:var(--neutral-50)}
.content-section h2{font-family:var(--font-display);font-weight:800;font-size:clamp(28px,3.5vw,40px);line-height:1.1;letter-spacing:-.02em;color:var(--neutral-900);margin-bottom:16px}
.content-section .eyebrow{display:inline-flex;align-items:center;gap:12px;font-family:var(--font-mono);font-size:11px;letter-spacing:.25em;text-transform:uppercase;color:var(--blue-700);margin-bottom:16px}
.content-section .eyebrow::before{content:'';width:24px;height:1px;background:var(--blue-700)}
.section-head-block{max-width:780px;margin-bottom:48px}

/* PROS-CONS GRID */
.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.proscons-card{padding:36px;background:var(--white);border-radius:var(--radius-md);border:1px solid var(--neutral-100);box-shadow:var(--shadow-sm)}
.proscons-card.pros{border-top:4px solid var(--blue-500)}
.proscons-card.cons{border-top:4px solid var(--neutral-400)}
.proscons-card h3{font-family:var(--font-display);font-weight:700;font-size:20px;margin-bottom:24px;display:flex;align-items:center;gap:12px}
.proscons-card h3 svg{width:24px;height:24px}
.proscons-card.pros h3 svg{color:var(--blue-500)}
.proscons-card.cons h3 svg{color:var(--neutral-400)}
.proscons-card ul{list-style:none;display:flex;flex-direction:column;gap:14px}
.proscons-card li{display:flex;gap:12px;font-size:14.5px;line-height:1.6;color:var(--neutral-700)}
.proscons-card li::before{content:'';width:6px;height:6px;border-radius:50%;flex-shrink:0;margin-top:9px}
.proscons-card.pros li::before{background:var(--blue-500)}
.proscons-card.cons li::before{background:var(--neutral-400)}

/* METHODS GRID */
.methods-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.method-card{padding:28px;background:var(--white);border:1px solid var(--neutral-100);border-radius:var(--radius-md);transition:all .3s var(--ease)}
.method-card:hover{border-color:var(--blue-200);box-shadow:var(--shadow-md);transform:translateY(-3px)}
.method-num{font-family:var(--font-mono);font-size:12px;color:var(--blue-700);letter-spacing:.15em;margin-bottom:12px;font-weight:600}
.method-card h4{font-family:var(--font-display);font-weight:700;font-size:18px;margin-bottom:10px;color:var(--neutral-900)}
.method-card p{font-size:14px;line-height:1.6;color:var(--neutral-500)}

/* FORMULAS TABLE */
.formulas-table{width:100%;background:var(--white);border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--neutral-100);font-family:var(--font-mono);font-size:13px}
.formulas-table thead{background:var(--blue-700);color:var(--white)}
.formulas-table th{padding:16px 20px;text-align:left;font-weight:600;letter-spacing:.08em;font-size:11px;text-transform:uppercase}
.formulas-table td{padding:16px 20px;border-bottom:1px solid var(--neutral-100);color:var(--neutral-700);vertical-align:top}
.formulas-table tr:last-child td{border-bottom:none}
.formulas-table tr:hover{background:var(--blue-50)}
.formulas-table .sym{font-weight:700;color:var(--blue-700);font-size:14px;width:60px}
.formulas-table .formula{color:var(--neutral-900);font-weight:600}

/* USE AREAS */
.use-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.use-pill{padding:16px 20px;background:var(--white);border:1px solid var(--neutral-100);border-radius:var(--radius-md);display:flex;align-items:center;gap:10px;font-size:14px;font-weight:500;color:var(--neutral-700);transition:all .25s var(--ease)}
.use-pill:hover{border-color:var(--blue-700);background:var(--blue-50);color:var(--blue-900);transform:translateY(-2px)}
.use-pill::before{content:'';width:6px;height:6px;background:var(--blue-300);border-radius:50%;flex-shrink:0;transition:background .25s}
.use-pill:hover::before{background:var(--blue-700)}

/* GALLERY */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.gallery-item{aspect-ratio:1;border-radius:var(--radius-md);overflow:hidden;cursor:pointer;position:relative;background:var(--neutral-100)}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.gallery-item:hover img{transform:scale(1.1)}
.gallery-item::after{content:'⤢';position:absolute;top:12px;right:12px;width:32px;height:32px;background:rgba(0,26,51,.8);color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;font-size:14px}
.gallery-item:hover::after{opacity:1}

/* RELATED PRODUCTS */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.related-card{background:var(--white);border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--neutral-100);transition:all .35s var(--ease)}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--blue-200)}
.related-card .img{aspect-ratio:4/3;overflow:hidden;background:var(--neutral-100)}
.related-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.related-card:hover img{transform:scale(1.06)}
.related-card .body{padding:18px}
.related-card .name{font-family:var(--font-display);font-weight:700;font-size:15px;color:var(--neutral-900)}

/* CTA INLINE */
.cta-inline{background:linear-gradient(135deg,var(--blue-900) 0%,var(--blue-700) 100%);color:var(--white);padding:80px 0;position:relative;overflow:hidden}
.cta-inline::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 80% 50%,rgba(0,166,251,.15) 0%,transparent 60%)}
.cta-inline-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:center;position:relative;z-index:2}
.cta-inline h2{font-family:var(--font-display);font-weight:800;font-size:clamp(28px,3.5vw,42px);line-height:1.1;letter-spacing:-.02em;margin-bottom:16px}
.cta-inline h2 em{font-style:normal;color:var(--blue-300);font-weight:500}
.cta-inline p{font-size:16px;color:rgba(255,255,255,.7);line-height:1.65;margin-bottom:24px;max-width:520px}
.cta-mini-form{background:var(--white);padding:28px;border-radius:var(--radius-md);box-shadow:0 30px 80px rgba(0,0,0,.3)}
.cta-mini-form h3{font-family:var(--font-display);font-weight:700;font-size:18px;margin-bottom:16px;color:var(--neutral-900)}
.cta-mini-form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
.cta-mini-form input,.cta-mini-form textarea{font-family:var(--font-body);font-size:14px;padding:11px 13px;border:1px solid var(--neutral-200);border-radius:var(--radius-sm);background:var(--neutral-50);color:var(--neutral-900);width:100%}
.cta-mini-form input:focus,.cta-mini-form textarea:focus{outline:none;border-color:var(--blue-700);background:var(--white);box-shadow:0 0 0 3px rgba(0,51,102,.08)}
.cta-mini-form textarea{min-height:80px;resize:vertical;margin-bottom:12px}
.cta-mini-form button{width:100%;justify-content:center}

/* FOOTER */
.footer{background:#000B1A;color:rgba(255,255,255,.6);padding:80px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;margin-bottom:64px}
.footer-brand-text{font-size:14px;line-height:1.7;margin:20px 0 28px;max-width:360px}
.footer .logo-name{color:var(--white)}
.footer .logo-tag{color:rgba(255,255,255,.4)}
.footer-social{display:flex;gap:10px}
.social-btn{width:38px;height:38px;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.6);transition:all .25s}
.social-btn:hover{background:var(--blue-700);border-color:var(--blue-700);color:var(--white)}
.social-btn svg{width:16px;height:16px;fill:currentColor}
.footer-col h4{font-family:var(--font-display);font-weight:700;font-size:14px;color:var(--white);letter-spacing:.04em;text-transform:uppercase;margin-bottom:20px}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;transition:color .2s,padding-left .2s;position:relative;padding-left:0}
.footer-links a:hover{color:var(--white);padding-left:8px}
.footer-links a::before{content:'→';position:absolute;left:-10px;opacity:0;transition:opacity .2s;color:var(--blue-300)}
.footer-links a:hover::before{opacity:1}
.footer-contact-item{display:flex;gap:12px;align-items:flex-start;margin-bottom:18px;font-size:14px}
.footer-contact-item svg{width:18px;height:18px;color:var(--blue-300);flex-shrink:0;margin-top:2px;stroke:currentColor;fill:none;stroke-width:1.8}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:28px 0;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:rgba(255,255,255,.4)}

/* PRODUCTS LISTING PAGE */
.products-listing{padding:60px 0 100px;background:var(--neutral-50)}
.products-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px;gap:24px;flex-wrap:wrap}
.products-count{font-family:var(--font-mono);font-size:13px;color:var(--neutral-500);letter-spacing:.05em}
.products-count strong{color:var(--blue-700);font-weight:700}
.cat-filters{display:flex;gap:8px;flex-wrap:wrap}
.cat-pill{padding:10px 18px;background:var(--white);border:1px solid var(--neutral-200);border-radius:100px;font-family:var(--font-display);font-weight:600;font-size:13px;color:var(--neutral-700);cursor:pointer;transition:all .25s var(--ease)}
.cat-pill:hover{border-color:var(--blue-700);color:var(--blue-700)}
.cat-pill.active{background:var(--blue-700);border-color:var(--blue-700);color:var(--white)}
.products-listing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-list-card{background:var(--white);border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--neutral-100);transition:all .35s var(--ease);display:flex;flex-direction:column}
.product-list-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--blue-200)}
.product-list-img{aspect-ratio:4/3;overflow:hidden;position:relative;background:var(--neutral-100)}
.product-list-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.product-list-card:hover .product-list-img img{transform:scale(1.08)}
.product-list-cat{position:absolute;top:14px;left:14px;font-family:var(--font-mono);font-size:11px;color:var(--white);background:rgba(0,26,51,.7);backdrop-filter:blur(8px);padding:4px 10px;border-radius:var(--radius-sm);letter-spacing:.1em}
.product-list-body{padding:24px;flex:1;display:flex;flex-direction:column}
.product-list-name{font-family:var(--font-display);font-weight:700;font-size:18px;color:var(--neutral-900);letter-spacing:-.01em;margin-bottom:8px;line-height:1.3}
.product-list-desc{font-size:14px;line-height:1.55;color:var(--neutral-500);margin-bottom:20px;flex:1}
.product-list-cta{display:flex;align-items:center;justify-content:space-between;padding-top:16px;border-top:1px solid var(--neutral-100);font-family:var(--font-display);font-weight:600;font-size:13px;color:var(--blue-700)}
.product-list-cta svg{width:14px;height:14px;transition:transform .25s var(--ease)}
.product-list-card:hover .product-list-cta svg{transform:translateX(4px)}

/* RESPONSIVE */
@media (max-width:1024px){
  .nav{display:none}
  .product-hero-grid{grid-template-columns:1fr;gap:40px}
  .spec-row{grid-template-columns:repeat(3,1fr);gap:8px}
  .pros-cons{grid-template-columns:1fr;gap:20px}
  .methods-grid{grid-template-columns:1fr}
  .use-grid{grid-template-columns:repeat(2,1fr)}
  .gallery-grid{grid-template-columns:repeat(3,1fr)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inline-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .products-listing-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
  .topbar-left{gap:14px}
  .topbar-left a span{display:none}
  .lang-switch{margin-left:auto}
  .use-grid{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .spec-row{grid-template-columns:1fr}
  .content-section{padding:60px 0}
  .product-hero{padding:60px 0}
  .breadcrumb-section{padding:48px 0}
  .formulas-table{font-size:11px}
  .formulas-table th,.formulas-table td{padding:12px 10px}
  .products-listing-grid{grid-template-columns:1fr}
  .products-toolbar{flex-direction:column;align-items:flex-start}
}