:root{--navy:#082a52;--navy2:#0a376f;--blue:#0b75ff;--blue2:#0aa6ff;--ink:#10234a;--muted:#63708a;--bg:#f5f9fd;--card:#ffffff;--line:#d9e5f1;--soft:#eaf4ff;--radius:26px;--shadow:0 16px 40px rgba(16,50,90,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;background:radial-gradient(circle at 12% 12%,rgba(11,117,255,.07),transparent 28%),linear-gradient(180deg,#fbfdff,#f3f8fd);color:var(--ink);line-height:1.45}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(210,225,240,.8)}.header-inner{height:82px;display:flex;align-items:center;gap:34px}.brand{display:flex;align-items:center;gap:12px;min-width:255px}.brand-mark{width:46px;height:46px;border-radius:12px;background:linear-gradient(145deg,var(--navy),#0c4b8c);display:grid;place-items:center;box-shadow:0 10px 28px rgba(8,42,82,.18)}.brand-mark svg{width:30px;height:30px;stroke:#fff;fill:none;stroke-width:1.35}.brand-text strong{display:block;font-size:20px;line-height:1;text-transform:uppercase;letter-spacing:-.035em}.brand-text small{display:block;font-size:9px;font-weight:700;margin-top:5px;letter-spacing:.02em}.nav{display:flex;align-items:center;justify-content:center;gap:34px;flex:1}.nav a{font-size:14px;font-weight:600;position:relative;padding:30px 0}.nav a.active::after,.nav a:hover::after{content:"";position:absolute;left:0;right:0;bottom:20px;height:2px;background:var(--blue)}.header-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;padding:13px 22px;font-weight:700;border:1px solid var(--navy);transition:.2s ease}.header-cta{background:var(--navy);color:#fff;white-space:nowrap}.btn-primary{background:linear-gradient(90deg,var(--blue),#0aa7ff);border-color:transparent;color:#fff}.btn-outline{background:#fff;border-color:#bfd2e7;color:var(--ink)}.btn:hover,.header-cta:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(11,117,255,.14)}.menu-toggle{display:none;margin-left:auto;border:0;background:transparent;font-size:26px;color:var(--navy)}
.hero-card,.dark-strip,.cta-band,.contact-hero{border-radius:28px;overflow:hidden}.hero-card{position:relative;min-height:465px;background:#0a2c56;color:#fff;margin-top:18px;box-shadow:var(--shadow)}.hero-bg{position:absolute;inset:0;background:url('../img/home-hero.webp') center/cover no-repeat}.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,37,72,.98) 0%,rgba(5,37,72,.9) 46%,rgba(5,37,72,.18) 72%,rgba(5,37,72,.15) 100%)}.hero-content{position:relative;z-index:2;width:min(620px,70%);padding:54px 44px}.eyebrow{display:inline-flex;align-items:center;border:1px solid rgba(255,255,255,.5);border-radius:999px;padding:7px 14px;font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase}.hero h1,.hero-card h1{font-size:clamp(46px,5.6vw,78px);line-height:.93;letter-spacing:-.05em;margin:24px 0 18px}.blue{color:var(--blue)}.hero-copy{font-size:20px;max-width:490px;margin:0}.hero-motto{position:absolute;right:42px;top:46px;z-index:2;font-size:13px;font-weight:800;letter-spacing:.08em;line-height:1.15;text-transform:uppercase}.hero-motto::after{content:"";display:block;width:48px;height:2px;background:var(--blue2);margin-top:14px}.search-band{margin-top:12px;background:#fff;border-radius:22px;padding:18px;box-shadow:var(--shadow);display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:12px;align-items:center}.search-box{height:56px;border:1px solid #d9e5f1;border-radius:999px;display:flex;align-items:center;gap:12px;padding:0 18px}.search-box input{border:0;outline:0;width:100%;font-size:14px;color:var(--ink)}.search-box svg{width:22px;height:22px;stroke:var(--navy);fill:none;stroke-width:1.8}.trust-strip{margin-top:10px;background:#fff;border-radius:20px;padding:18px 24px;display:grid;grid-template-columns:repeat(3,1fr);box-shadow:var(--shadow)}.trust-stat{display:flex;align-items:center;gap:15px;padding:2px 28px;border-left:1px solid var(--line)}.trust-stat:first-child{border-left:0;padding-left:0}.trust-stat strong{display:block;font-size:20px}.trust-stat small{display:block;color:var(--muted);font-size:12px}.icon-box{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;background:#edf6ff;color:var(--blue)}.icon-box svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7}.section{padding:54px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.kicker{display:inline-flex;border:1px solid #b9cadc;border-radius:999px;padding:5px 11px;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}.section h2,.section-head h2{font-size:clamp(34px,4vw,52px);letter-spacing:-.045em;line-height:1.03;margin:10px 0 0}.section p.lead{color:var(--muted);max-width:700px;font-size:17px}.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.category-card{min-height:176px;background:#fff;border-radius:18px;padding:22px;border:1px solid #e4edf7;box-shadow:0 10px 30px rgba(21,55,95,.04);position:relative;overflow:hidden;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease,background .25s ease}.category-card:hover{transform:translateY(-4px);border-color:#b8d9ff;box-shadow:0 18px 42px rgba(21,82,155,.12);background:linear-gradient(145deg,#fff,#f2f8ff)}.category-card .num{font-size:12px;font-weight:800;color:var(--blue);position:relative;z-index:2}.category-card h3{font-size:21px;line-height:1.05;margin:20px 0 7px;letter-spacing:-.03em;max-width:72%;position:relative;z-index:2}.category-card p{font-size:13px;color:var(--muted);margin:0;max-width:72%;position:relative;z-index:2}.category-illustration{position:absolute;right:14px;top:36px;width:86px;height:86px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,#eef7ff 0%,rgba(238,247,255,.82) 60%,rgba(238,247,255,0) 72%);opacity:.18;transform:translate(20px,-8px) scale(.82);transition:opacity .28s ease,transform .35s cubic-bezier(.2,.8,.2,1)}.category-illustration svg{width:68px;height:68px;fill:none;stroke:var(--blue);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.category-card:hover .category-illustration{opacity:1;transform:translate(0,0) scale(1)}.round-arrow{position:absolute;right:16px;bottom:14px;width:26px;height:26px;border-radius:50%;border:1px solid var(--navy);display:grid;place-items:center;color:var(--navy);transition:.25s ease;z-index:3}.category-card:hover .round-arrow{background:var(--blue);border-color:var(--blue);color:#fff;transform:translateX(2px)}.product-tools{display:flex;gap:10px;align-items:center}.product-tools .search-box{min-width:300px;background:#fff}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.product-card{background:#fff;border:1px solid #e6eef6;border-radius:18px;padding:20px;display:flex;flex-direction:column;min-height:250px}.tag{align-self:flex-start;background:#e7f3ff;color:var(--blue);border-radius:999px;padding:5px 10px;font-size:10px;font-weight:800;text-transform:uppercase}.product-card h3{font-size:20px;line-height:1.05;margin:13px 0 4px;letter-spacing:-.03em}.product-card .chem{font-size:12px;color:var(--muted)}.product-card p{font-size:13px;color:var(--muted);margin:10px 0}.product-meta{display:grid;grid-template-columns:1fr 1fr;gap:10px;border-top:1px solid var(--line);padding-top:11px;margin-top:auto}.product-meta small{color:var(--muted)}.card-actions{display:flex;justify-content:space-between;gap:10px;margin-top:14px;border-top:1px solid var(--line);padding-top:12px}.card-actions a{font-size:12px;font-weight:800;color:var(--blue)}.dark-strip{background:linear-gradient(90deg,#082a52,#0a3f78);color:#fff;padding:34px 38px;display:grid;grid-template-columns:1.4fr 1fr;align-items:center;gap:34px}.dark-strip h2{margin:0;font-size:38px}.doc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.doc-card{border:1px solid rgba(89,173,255,.7);border-radius:14px;padding:17px;text-align:center}.doc-card strong{display:block;font-size:19px}.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:24px}.flow-step{padding:0 24px;border-left:1px solid #c9d9e8}.flow-step:first-child{border-left:0;padding-left:0}.flow-step strong{font-size:30px;color:var(--blue)}.flow-step h3{margin:4px 0 5px;font-size:17px}.flow-step p{margin:0;font-size:12px;color:var(--muted)}.about-teaser{background:#fff;border-radius:22px;padding:28px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:30px}.about-art{height:240px;border-radius:18px;background:linear-gradient(135deg,rgba(255,255,255,.12),rgba(11,117,255,.06)),url('../img/home-about.webp') center/cover no-repeat;position:relative}.about-art::after{content:"SK";position:absolute;inset:auto 20px 4px auto;font-size:110px;font-weight:900;letter-spacing:-.09em;color:rgba(255,255,255,.85);text-shadow:0 10px 30px rgba(8,42,82,.2)}.cta-band{background:linear-gradient(90deg,#07264b,#0a376f);color:#fff;padding:26px 30px;display:flex;align-items:center;justify-content:space-between;gap:24px}.cta-band h2{font-size:33px;margin:0}.site-footer{padding:26px 0 38px}.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;align-items:start;font-size:13px}.footer-title{font-weight:800;margin-bottom:10px}.footer-muted{color:var(--muted)}.footer-bottom{border-top:1px solid var(--line);margin-top:20px;padding-top:16px;display:flex;justify-content:space-between;color:var(--muted);font-size:11px}
.page-hero{margin-top:18px;border-radius:28px;min-height:320px;color:#fff;position:relative;overflow:hidden;background:linear-gradient(90deg,rgba(7,35,68,.96),rgba(7,35,68,.18)),url('../img/product-hero.webp') center/cover no-repeat}.page-hero .inner{position:relative;z-index:2;padding:38px 40px;max-width:750px}.breadcrumbs{font-size:12px;margin-bottom:26px;color:#dce9f6}.page-hero h1{font-size:clamp(42px,5vw,66px);line-height:.96;letter-spacing:-.045em;margin:0 0 14px}.page-hero p{font-size:18px;max-width:650px}.catalog-search{background:#fff;border-radius:22px;padding:24px;margin-top:12px}.catalog-search h2{font-size:30px;margin:0 0 16px}.catalog-row{display:grid;grid-template-columns:1fr 220px 58px;gap:10px}.catalog-row input,.catalog-row select,.contact-form input,.contact-form textarea{width:100%;border:1px solid #d2deeb;background:#fff;border-radius:12px;padding:15px 16px;outline:0}.catalog-row button{border:0;border-radius:14px;background:var(--blue);color:#fff;font-size:24px}.catalog-count{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin:18px 0 12px}.directory{display:grid;grid-template-columns:1fr 1fr;gap:12px}.directory details{background:#fff;border:1px solid #e6eef6;border-radius:15px;padding:17px}.directory summary{font-weight:800;cursor:pointer}.directory-links{display:flex;flex-wrap:wrap;gap:8px 14px;margin-top:14px}.directory-links a{font-size:12px;color:var(--blue)}
.about-hero{min-height:350px;background:linear-gradient(90deg,rgba(5,34,67,.92),rgba(5,34,67,.28)),url('../img/about-hero.webp?v=2a4') center/cover no-repeat}.about-layout{display:grid;grid-template-columns:1fr 1fr 1fr;gap:32px;align-items:center}.about-collage{min-height:390px;border-radius:22px;background:url('../img/about-collage.webp?v=2a4') center/cover no-repeat;position:relative;box-shadow:var(--shadow)}.precision-badge{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:linear-gradient(145deg,var(--navy),#0b3f76);color:#fff;border:4px solid #fff;border-radius:18px;padding:30px 24px;font-size:24px;font-weight:800;line-height:1.05}.check-list{display:grid;gap:16px}.check-item{display:flex;gap:12px}.check-item .icon-box{flex:0 0 46px;height:46px}.feature-band{min-height:340px;border-radius:26px;padding:42px;color:#fff;background:linear-gradient(90deg,rgba(5,34,67,.95),rgba(5,34,67,.55)),url('../img/about-feature.webp?v=2a4') center/cover no-repeat;display:flex;align-items:center}.feature-band>div{max-width:620px}.feature-band h2{font-size:44px;margin:0 0 12px}.support-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}.support-art{height:380px;border-radius:24px;background:url('../img/about-support.webp?v=2a4') center/cover no-repeat;box-shadow:var(--shadow)}
.article-section{padding-top:34px}.article-info-box{margin-top:22px;background:#fff;border:1px solid #e4edf7;border-radius:20px;padding:28px 30px;display:flex;align-items:center;justify-content:space-between;gap:24px;box-shadow:0 10px 30px rgba(21,55,95,.05)}.article-info-box p{margin:0;max-width:760px;color:var(--muted);font-size:17px;line-height:1.65}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.article-card{background:#fff;border:1px solid #e4edf7;border-radius:18px;overflow:hidden;box-shadow:0 10px 30px rgba(21,55,95,.05);transition:transform .25s ease,box-shadow .25s ease}.article-card:hover{transform:translateY(-4px);box-shadow:0 18px 42px rgba(21,82,155,.12)}.article-image{display:block;height:170px;background-position:center;background-size:cover}.article-body{padding:18px}.article-card h3{font-size:19px;line-height:1.15;margin:12px 0 8px;letter-spacing:-.025em}.article-card p{font-size:13px;color:var(--muted);margin:0 0 14px}.article-link{font-size:12px;font-weight:800;color:var(--blue)}.contact-hero{margin-top:18px;min-height:310px;background:radial-gradient(circle at 30% 20%,rgba(36,132,255,.8),transparent 34%),radial-gradient(circle at 65% 70%,rgba(8,46,92,.4),transparent 38%),linear-gradient(135deg,#051d3d,#0c3972 55%,#03152d);color:#fff;position:relative}.contact-hero::after{content:"KONTAK";position:absolute;right:20px;top:22px;font-size:68px;font-weight:800;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.45);writing-mode:vertical-rl;letter-spacing:.03em}.contact-hero .inner{padding:70px 44px}.contact-hero h1{font-size:58px;margin:10px 0}.contact-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px}.contact-copy h2{font-size:50px;line-height:1.02;letter-spacing:-.045em}.contact-list{display:grid;gap:20px;margin:28px 0}.contact-item{display:flex;gap:14px;align-items:flex-start}.contact-form{background:#f2f6fa;border-radius:24px;padding:28px}.contact-form h2{font-size:30px;margin:0}.contact-form label{display:block;font-size:12px;font-weight:700;margin:14px 0 7px}.contact-form textarea{min-height:100px;resize:vertical}.contact-form .btn{width:100%;border:0;border-radius:12px;margin-top:14px}.map-card{height:320px;border-radius:24px;background:linear-gradient(rgba(255,255,255,.2),rgba(255,255,255,.2)),repeating-linear-gradient(35deg,#dfeaf5 0 3px,#eff5fb 3px 28px);position:relative;overflow:hidden}.map-card::before,.map-card::after{content:"";position:absolute;background:#b7d9ff}.map-card::before{height:16px;left:-5%;right:-5%;top:54%;transform:rotate(-8deg)}.map-card::after{width:14px;top:-5%;bottom:-5%;left:57%;transform:rotate(18deg)}.map-info{position:absolute;z-index:2;left:28px;top:34px;background:#fff;border-radius:18px;padding:22px;width:270px;box-shadow:var(--shadow)}.map-pin{position:absolute;z-index:3;left:56%;top:54%;width:34px;height:34px;border-radius:50% 50% 50% 0;background:var(--blue);transform:rotate(-45deg);box-shadow:0 10px 20px rgba(11,117,255,.3)}
.rfq-page{max-width:860px;margin:34px auto;background:#fff;border-radius:26px;padding:32px;box-shadow:var(--shadow)}
@media(max-width:980px){.nav{gap:20px}.brand{min-width:auto}.header-cta{display:none}.category-grid{grid-template-columns:repeat(2,1fr)}.article-grid{grid-template-columns:repeat(2,1fr)}.article-info-box{flex-direction:column;align-items:flex-start}.product-grid{grid-template-columns:repeat(2,1fr)}.about-layout{grid-template-columns:1fr 1fr}.about-layout>div:last-child{grid-column:1/-1}.footer-inner{grid-template-columns:1fr 1fr}.search-band{grid-template-columns:1fr 1fr}.search-box{grid-column:1/-1}.contact-layout{grid-template-columns:1fr}.support-grid{grid-template-columns:1fr}.flow-grid{grid-template-columns:repeat(2,1fr);gap:22px}.flow-step:nth-child(3){border-left:0;padding-left:0}.catalog-row{grid-template-columns:1fr 180px 58px}}
@media(max-width:760px){.container{width:min(100% - 26px,680px)}.article-info-box{padding:22px;gap:18px}.article-info-box p{font-size:15px}.header-inner{height:70px}.brand-text strong{font-size:17px}.brand-text small{font-size:8px}.nav{display:none;position:absolute;left:13px;right:13px;top:70px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow);flex-direction:column;gap:0}.nav.open{display:flex}.nav a{width:100%;padding:14px}.nav a.active::after,.nav a:hover::after{display:none}.menu-toggle{display:block}.hero-card{min-height:520px}.hero-content{padding:40px 26px;width:100%;max-width:500px}.hero-bg{background-position:68% center}.hero-bg::after{background:linear-gradient(90deg,rgba(5,37,72,.96),rgba(5,37,72,.80) 60%,rgba(5,37,72,.38))}.hero h1,.hero-card h1{font-size:50px}.hero-copy{font-size:16px}.hero-motto{display:none}.search-band{grid-template-columns:1fr}.search-band .btn{width:100%}.trust-strip{grid-template-columns:1fr}.trust-stat{border-left:0;border-top:1px solid var(--line);padding:13px 0}.trust-stat:first-child{border-top:0}.section{padding:40px 0}.section-head{align-items:flex-start;flex-direction:column}.category-grid,.article-grid,.product-grid,.directory{grid-template-columns:1fr}.category-card h3,.category-card p{max-width:76%}.product-tools{width:100%;flex-direction:column;align-items:stretch}.product-tools .search-box{min-width:0}.dark-strip{grid-template-columns:1fr;padding:28px}.doc-grid{grid-template-columns:repeat(3,1fr)}.dark-strip h2{font-size:31px}.flow-grid{grid-template-columns:1fr}.flow-step,.flow-step:nth-child(3){border-left:0;border-top:1px solid var(--line);padding:16px 0}.flow-step:first-child{border-top:0}.about-teaser{grid-template-columns:1fr}.cta-band{align-items:flex-start;flex-direction:column}.footer-inner{grid-template-columns:1fr}.footer-bottom{flex-direction:column;gap:8px}.page-hero .inner{padding:34px 24px}.page-hero h1{font-size:43px}.catalog-row{grid-template-columns:1fr}.catalog-row button{height:52px}.about-layout{grid-template-columns:1fr}.about-layout>div:last-child{grid-column:auto}.feature-band{padding:30px}.feature-band h2{font-size:36px}.contact-hero .inner{padding:52px 26px}.contact-hero h1{font-size:48px}.contact-copy h2{font-size:40px}.map-info{width:230px;left:16px;top:20px}.contact-form{padding:22px}}

/* V2A.3: gentle feedback for product cards, including keyboard navigation. */
.product-card{transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
@media(hover:hover) and (pointer:fine){
  .product-card:hover{transform:translateY(-4px);border-color:#b8d9ff;box-shadow:0 14px 30px rgba(21,82,155,.12)}
}
.product-card:focus-within{border-color:#b8d9ff;box-shadow:0 14px 30px rgba(21,82,155,.12)}
@media(prefers-reduced-motion:reduce){
  .product-card{transition:none}
  .product-card:hover{transform:none}
}

/* Official supplied SKN mark, displayed without changing the artwork. */
.brand-mark{background:transparent;box-shadow:none;border-radius:0;flex:0 0 46px}
.brand-mark img{width:46px;height:46px;object-fit:contain}

/* Article index shares the site's navy, blue, rounded cards and spacing. */
.articles-page .article-hero{width:min(1180px,calc(100% - 40px));margin:18px auto 0;background:radial-gradient(ellipse at 90% 15%,rgba(10,166,255,.32),transparent 50%),linear-gradient(120deg,var(--navy),var(--navy2));box-shadow:var(--shadow)}
.article-hero .container{width:100%}
.article-hero .inner{max-width:920px;padding:42px}
.article-hero h1{font-size:clamp(36px,4.6vw,60px);line-height:1.06;margin-top:20px}
.articles-page .article-grid{align-items:stretch}
.articles-page .article-card{display:flex;flex-direction:column}
.articles-page .article-image{height:210px;flex-shrink:0}
.articles-page .article-body{padding:24px}
.articles-page .article-card h3{font-size:23px;line-height:1.2}
.articles-page .article-card p{font-size:14px;line-height:1.65;margin-bottom:0}
@media(max-width:760px){.articles-page .article-hero{width:calc(100% - 26px)}.article-hero .inner{padding:30px 24px}.articles-page .article-image{height:190px}}
@media(prefers-reduced-motion:reduce){.articles-page .article-card{transition:none}.articles-page .article-card:hover{transform:none}}

/* Filtered products must remain hidden despite flex display. */
.product-card[hidden],.directory details[hidden],.directory-links a[hidden],[data-search-empty][hidden]{display:none!important}

/* V2A15: shared outline icons inherit the surrounding brand colors. */
.skn-icon{display:inline-block;width:1em;height:1em;flex-shrink:0;vertical-align:-.15em;pointer-events:none}.icon-box .skn-icon{width:22px;height:22px}.menu-toggle .skn-icon{width:26px;height:26px;vertical-align:middle}.round-arrow .skn-icon{width:15px;height:15px}.category-illustration .skn-icon{width:60px;height:60px;stroke-width:1.6}.search-box .skn-icon{width:22px;height:22px}.header-cta .skn-icon,.btn .skn-icon{width:18px;height:18px}.catalog-row button .skn-icon{width:22px;height:22px;vertical-align:middle}

.about-support .check-list{margin-top:28px;gap:24px}.about-support .check-item>div:last-child{line-height:1.6}.about-support .check-item strong{display:inline-block;margin-bottom:4px}