:root{
  --sk-blue:#1565D8;
  --sk-blue-2:#2878E6;
  --sk-dark:#123A73;
  --sk-soft:#F5F9FF;
  --sk-border:#DCE8F8;
  --sk-text:#1E293B;
  --sk-muted:#64748B;
  --sk-shadow:0 10px 30px rgba(18,58,115,.08);
  --sk-max:1180px;
  --sk-radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:#fff;color:var(--sk-text);line-height:1.5}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto}
.wrap{width:min(calc(100% - 32px),var(--sk-max));margin:auto}
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--sk-border);z-index:99}
.header-top{display:grid;grid-template-columns:auto 1fr auto auto;gap:14px;align-items:center;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;min-width:260px}
.brand img{width:48px;height:48px;object-fit:contain}
.brand-copy{display:flex;flex-direction:column;line-height:.95}
.brand-title{font-weight:900;color:var(--sk-dark);font-size:28px;letter-spacing:-1.4px}
.brand small{font-size:11px;margin-top:5px;color:var(--sk-dark)}
.searchbar{border:1px solid var(--sk-border);border-radius:14px;background:#fff;padding:10px 14px}
.searchline{display:flex;gap:8px;align-items:center}
.searchline input{border:0;outline:0;flex:1;font-size:14px;background:transparent}
.searchhint{font-size:11px;color:var(--sk-muted);margin-top:3px}
.header-btn{height:48px;border-radius:12px;color:#fff;padding:0 14px;display:flex;align-items:center;gap:9px;font-weight:800;transition:.18s}
.header-btn:hover{transform:translateY(-1px);box-shadow:var(--sk-shadow)}
.header-btn svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8}
.header-btn .sub{display:block;font-size:10px;font-weight:600;opacity:.92}
.wa{background:var(--sk-blue)}
.shop{background:var(--sk-dark)}
.nav{border-top:1px solid #edf3fb}
.nav .wrap{display:flex;gap:26px;overflow:auto}
.nav a{padding:11px 0;font-size:14px;font-weight:700;color:var(--sk-dark);white-space:nowrap}
.nav a:hover,.nav .current-menu-item>a{color:var(--sk-blue)}
.hero{background:linear-gradient(90deg,#F5F9FF 0%,#fff 54%,#EEF5FF 100%);padding:54px 0}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.12em;font-weight:800;color:var(--sk-blue);margin-bottom:8px}
h1,h2,h3{margin:0;color:var(--sk-dark);line-height:1.1}
h1{font-size:clamp(42px,5vw,66px);letter-spacing:-2.6px}
h1 span{color:var(--sk-blue)}
h2{font-size:32px;letter-spacing:-1px}
.lead{font-size:18px;color:#40536b;max-width:620px}
.hero-search{margin-top:22px;background:#fff;border:1px solid var(--sk-border);border-radius:14px;padding:13px 14px;box-shadow:var(--sk-shadow)}
.hero-search input{border:0;outline:0;width:100%;font-size:16px;background:transparent}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.chip{border:1px solid var(--sk-border);border-radius:999px;padding:7px 11px;background:#fff;font-size:12px;font-weight:700;color:var(--sk-dark);transition:.16s}
.chip:hover{border-color:#AFCBF0;color:var(--sk-blue);transform:translateY(-1px)}
.hero-visual{background:#fff;border:1px solid var(--sk-border);border-radius:24px;min-height:330px;display:flex;align-items:end;justify-content:center;gap:18px;padding:28px;box-shadow:var(--sk-shadow)}
.demo-pack{border-radius:16px;display:grid;place-items:center;text-align:center;font-weight:800;color:var(--sk-dark);border:1px solid #BFD3EC}
.demo-drum{width:115px;height:250px;background:linear-gradient(90deg,#1565D8,#2B7CE8);color:#fff}
.demo-pail{width:145px;height:195px;background:#fff}
.demo-sack{width:115px;height:220px;background:#dbc7a8}
.section{padding:48px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:20px}
.more{font-size:13px;color:var(--sk-blue);font-weight:800}
.grid5{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.grid6{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.card{border:1px solid var(--sk-border);background:#fff;border-radius:var(--sk-radius);box-shadow:0 3px 14px rgba(18,58,115,.04);transition:.18s}
.card:hover{transform:translateY(-3px);box-shadow:var(--sk-shadow);border-color:#BBD3F2}
.cat-card{padding:18px}
.iconbox{width:42px;height:42px;border-radius:12px;background:var(--sk-soft);display:grid;place-items:center;color:var(--sk-blue);font-weight:900;margin-bottom:14px}
.cat-card p,.product-card p,.need-card p{font-size:12px;color:var(--sk-muted)}
.product-card{overflow:hidden}
.product-img{height:165px;background:var(--sk-soft);display:grid;place-items:center;overflow:hidden}
.product-img img{width:100%;height:100%;object-fit:contain;padding:12px}
.product-body{padding:14px}
.meta{font-size:12px;color:var(--sk-muted);margin-top:5px}
.product-link{margin-top:12px;padding:9px 10px;border:1px solid #AFCBF0;border-radius:10px;color:var(--sk-blue);font-weight:800;font-size:12px;text-align:center}
.action-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.action-card{padding:22px;min-height:190px;display:flex;flex-direction:column;justify-content:space-between}
.action-card.primary{background:linear-gradient(135deg,var(--sk-blue),var(--sk-blue-2));color:#fff;border-color:transparent}
.action-card.dark{background:linear-gradient(135deg,var(--sk-dark),#214E8E);color:#fff;border-color:transparent}
.action-card.primary h3,.action-card.dark h3{color:#fff}
.action-card.primary p,.action-card.dark p{color:#DCEAFF}
.action-icon{width:42px;height:42px;border-radius:12px;background:var(--sk-soft);display:grid;place-items:center;color:var(--sk-blue);font-weight:900}
.action-card.primary .action-icon,.action-card.dark .action-icon{background:rgba(255,255,255,.14);color:#fff}
.page-hero{background:var(--sk-soft);padding:42px 0;border-bottom:1px solid var(--sk-border)}
.breadcrumb{font-size:12px;color:var(--sk-muted);margin-bottom:10px}
.archive-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:start}
.product-photo{min-height:430px;border:1px solid var(--sk-border);border-radius:20px;background:#fff;display:grid;place-items:center;box-shadow:var(--sk-shadow);overflow:hidden}
.product-photo img{max-height:390px;object-fit:contain}
.specs{width:100%;border-collapse:collapse;margin:18px 0}
.specs td{padding:9px 0;border-bottom:1px solid var(--sk-border);font-size:14px}
.specs td:first-child{color:var(--sk-muted);width:42%}
.notice{background:var(--sk-soft);border:1px solid var(--sk-border);padding:13px;border-radius:12px;color:var(--sk-muted);font-size:13px}
.article{max-width:820px}
.article p{font-size:17px;color:#40536b}
.footer{background:#0E2E5A;color:#fff;margin-top:24px}
.footer .wrap{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:28px;padding:36px 0}
.footer h4{margin:0 0 10px}
.footer a{display:block;color:#D9E6F7;font-size:13px;margin:6px 0}
.legal{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;font-size:12px;color:#C5D6EC}
@media(max-width:980px){
  .header-top{grid-template-columns:1fr 1fr}
  .searchbar{grid-column:1/-1;order:3}
  .hero-grid,.product-detail{grid-template-columns:1fr}
  .grid5{grid-template-columns:repeat(2,1fr)}
  .grid6{grid-template-columns:repeat(3,1fr)}
  .grid4,.archive-grid{grid-template-columns:repeat(2,1fr)}
  .action-grid,.grid3{grid-template-columns:1fr}
  .footer .wrap{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:620px){
  .wrap{width:min(calc(100% - 24px),var(--sk-max))}
  .brand{min-width:auto}
  .brand-title{font-size:24px}
  .header-btn{padding:0 10px}
  .nav .wrap{gap:18px}
  .hero{padding:36px 0}
  .hero-visual{min-height:260px}
  .grid5,.grid4,.archive-grid,.footer .wrap{grid-template-columns:1fr}
  .grid6{grid-template-columns:repeat(2,1fr)}
}

/* v0.3 Catalog */
.catalog-layout{display:grid;grid-template-columns:245px 1fr;gap:28px;align-items:start}
.catalog-sidebar{position:sticky;top:132px;border:1px solid var(--sk-border);border-radius:16px;padding:18px;background:#fff}
.catalog-sidebar h3{font-size:16px;margin-bottom:14px}
.filter-group{margin-bottom:16px}
.filter-label{display:block;font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--sk-muted);margin-bottom:6px}
.filter-input,.filter-select{width:100%;height:42px;border:1px solid var(--sk-border);border-radius:10px;padding:0 11px;background:#fff;color:var(--sk-text);outline:none}
.filter-input:focus,.filter-select:focus{border-color:#9DBFEC;box-shadow:0 0 0 3px rgba(21,101,216,.08)}
.filter-submit{width:100%;height:42px;border:0;border-radius:10px;background:var(--sk-blue);color:#fff;font-weight:800;cursor:pointer}
.filter-reset{display:block;text-align:center;font-size:12px;color:var(--sk-muted);margin-top:10px}
.catalog-toolbar{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:16px}
.result-count{font-size:13px;color:var(--sk-muted)}
.mobile-filter-btn{display:none;border:1px solid var(--sk-border);border-radius:10px;background:#fff;padding:9px 12px;font-weight:800;color:var(--sk-dark)}
.product-card .product-body h3{font-size:17px;letter-spacing:-.3px}
.product-chemical{font-size:12px;color:#40536b;margin-top:5px}
.product-pack{font-size:11px;color:var(--sk-muted);margin-top:7px}
.card-actions{display:grid;grid-template-columns:1fr auto;gap:7px;margin-top:12px}
.card-actions .product-link{margin:0}
.card-wa{border:1px solid var(--sk-border);border-radius:10px;padding:8px 10px;font-size:12px;font-weight:900;color:var(--sk-dark)}
.catalog-empty{border:1px dashed var(--sk-border);border-radius:16px;padding:36px;text-align:center;color:var(--sk-muted)}
.product-tagline{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}
.product-tag{font-size:11px;font-weight:800;padding:6px 8px;border-radius:999px;background:var(--sk-soft);color:var(--sk-dark)}
.related-products{margin-top:38px}
.photo-note{margin-top:10px;font-size:11px;color:var(--sk-muted);text-align:center}
.product-cta-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:18px}
.product-cta{border-radius:11px;padding:11px 12px;text-align:center;font-size:12px;font-weight:900;border:1px solid var(--sk-border)}
.product-cta.primary{background:var(--sk-blue);color:#fff;border-color:var(--sk-blue)}
.product-cta.dark{background:var(--sk-dark);color:#fff;border-color:var(--sk-dark)}
@media(max-width:900px){
  .catalog-layout{grid-template-columns:1fr}
  .catalog-sidebar{display:none;position:static}
  .catalog-sidebar.is-open{display:block}
  .mobile-filter-btn{display:inline-flex}
}
@media(max-width:620px){
  .catalog-toolbar{align-items:flex-start}
  .product-cta-row{grid-template-columns:1fr}
  .card-actions{grid-template-columns:1fr}
}

/* v0.4 Live search + SEO content polish */
.live-search-results{position:absolute;top:calc(100% + 8px);left:0;right:0;background:#fff;border:1px solid var(--sk-border);border-radius:14px;box-shadow:0 20px 50px rgba(18,58,115,.16);z-index:120;overflow:hidden;max-height:430px;overflow-y:auto}
.live-search-item{display:flex;gap:10px;align-items:center;padding:10px 12px;border-bottom:1px solid #EDF3FA;background:#fff}
.live-search-item:hover{background:var(--sk-soft)}
.live-thumb{width:42px;height:42px;border-radius:10px;background:var(--sk-soft);display:grid;place-items:center;overflow:hidden;color:var(--sk-blue);font-size:11px;font-weight:900;flex:0 0 auto}
.live-thumb img{width:100%;height:100%;object-fit:contain}
.live-copy{display:flex;flex-direction:column;min-width:0}
.live-copy strong{font-size:13px;color:var(--sk-dark);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.live-copy small{font-size:10px;color:var(--sk-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.live-search-all,.live-search-empty{display:block;padding:11px 12px;font-size:12px;font-weight:800;color:var(--sk-blue);background:#FAFCFF}
.faq-list{display:grid;gap:10px;margin-top:18px}
.faq-item{border:1px solid var(--sk-border);border-radius:14px;background:#fff;padding:16px}
.faq-item h3{font-size:17px;margin-bottom:7px}
.faq-item p{margin:0;font-size:14px;color:#40536b}
.related-articles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.article-card{padding:18px}
.article-card .eyebrow{font-size:10px}
.article-card h3{font-size:18px;margin-bottom:8px}
.article-card p{font-size:13px;color:var(--sk-muted)}
.seo-copy{max-width:820px;margin:0 auto;padding:8px 0 22px;color:#40536b}
.seo-copy h2{margin-top:24px}
@media(max-width:760px){.related-articles{grid-template-columns:1fr}.live-search-results{position:fixed;left:12px;right:12px;top:120px;max-height:55vh}}

/* v0.9 production polish */
.catalog-toolbar-left{display:flex;align-items:center;gap:10px}
.active-filters{display:flex;gap:8px;flex-wrap:wrap;margin:-4px 0 18px}
.active-filter{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border:1px solid #BBD3F2;border-radius:999px;background:#F7FBFF;color:var(--sk-dark);font-size:12px;font-weight:800}
.active-filter:hover{border-color:var(--sk-blue);color:var(--sk-blue)}
.active-filter span{font-size:15px;line-height:1;color:#7A8DA5}
.clear-filters{padding:7px 4px;font-size:12px;font-weight:800;color:var(--sk-muted)}
.catalog-sidebar{box-shadow:0 4px 18px rgba(18,58,115,.04)}
.filter-submit{transition:.16s}
.filter-submit:hover{background:#0E56C3;transform:translateY(-1px)}
.filter-reset:hover{color:var(--sk-blue)}
.pagination,.nav-links{display:flex;justify-content:center;gap:6px;margin-top:28px}
.page-numbers{min-width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--sk-border);border-radius:9px;background:#fff;font-size:13px;font-weight:800;color:var(--sk-dark)}
.page-numbers.current,.page-numbers:hover{background:var(--sk-blue);border-color:var(--sk-blue);color:#fff}

@media(max-width:900px){
  .catalog-toolbar{position:sticky;top:117px;z-index:35;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);padding:8px 0;border-bottom:1px solid #EDF3FA}
  .catalog-sidebar.is-open{display:block;padding:16px;margin-bottom:4px}
}
@media(max-width:620px){
  body{font-size:15px}
  .header-top{gap:9px;padding:10px 0}
  .brand img{width:42px;height:42px}
  .brand-title{font-size:21px;letter-spacing:-.8px}
  .brand small{font-size:9px}
  .header-btn{height:42px;border-radius:10px;font-size:12px}
  .header-btn .sub{font-size:9px}
  .searchbar{padding:8px 11px;border-radius:12px}
  .searchhint{display:none}
  .nav a{padding:9px 0;font-size:13px}
  .hero{padding:30px 0}
  h1{letter-spacing:-1.5px}
  h2{font-size:27px}
  .section{padding:36px 0}
  .section-head{margin-bottom:15px}
  .page-hero{padding:30px 0}
  .page-hero h1{font-size:38px!important}
  .lead{font-size:16px}
  .card{border-radius:14px}
  .product-img{height:190px}
  .product-body{padding:13px}
  .catalog-layout{gap:16px}
  .catalog-toolbar{top:103px}
  .active-filters{margin:2px 0 14px}
  .filter-group{margin-bottom:12px}
  .filter-input,.filter-select,.filter-submit{height:44px}
  .product-detail{gap:22px}
  .product-photo{min-height:300px}
  .product-photo img{max-height:280px}
  .specs td{font-size:13px;padding:8px 0}
  .notice{font-size:12px}
  .footer .wrap{padding:30px 0}
}

.live-search-item.is-active,.live-search-all.is-active,.live-search-empty.is-active{background:var(--sk-soft);outline:2px solid rgba(21,101,216,.12);outline-offset:-2px}

/* v0.9.1 header visual fidelity */
.brand{min-width:275px}
.brand img{flex:0 0 auto}
.header-btn-copy{display:flex;flex-direction:column;line-height:1.08}
.header-btn-title{display:block;font-size:13px;font-weight:850;white-space:nowrap}
.header-btn .sub{margin-top:3px}
.search-icon{width:18px;height:18px;stroke:#6B7F99;fill:none;stroke-width:1.8;flex:0 0 auto}
.header-btn svg{stroke-linecap:round;stroke-linejoin:round}
@media(max-width:980px){
  .header-top{grid-template-columns:minmax(0,1fr) auto auto}
  .brand{min-width:0}
  .searchbar{grid-column:1/-1;order:4}
}
@media(max-width:720px){
  .header-top{grid-template-columns:minmax(0,1fr) auto auto}
  .brand-title{font-size:20px}
  .brand small{font-size:9px}
  .header-btn{width:44px;padding:0;justify-content:center}
  .header-btn-copy{display:none}
  .header-btn svg{width:21px;height:21px}
  .brand img{width:42px;height:42px}
}
@media(max-width:460px){
  .header-top{gap:7px}
  .brand{gap:7px}
  .brand-title{font-size:18px;letter-spacing:-.5px}
  .brand small{font-size:8.5px}
}

.hero-photo{padding:0;overflow:hidden;min-height:0}
.hero-photo img{display:block;width:100%;height:100%;min-height:330px;object-fit:cover}
.need-img{height:145px;overflow:hidden;background:var(--sk-soft)}
.need-img img{width:100%;height:100%;object-fit:cover;display:block}
@media(max-width:620px){.hero-photo img{min-height:240px}.need-img{height:175px}}

/* v1.1.4 search + page navigation */
.search-products-section{padding-bottom:36px}
.search-articles-section{border-top:1px solid var(--sk-border)}
.search-empty-product{display:flex;justify-content:space-between;align-items:center;gap:22px;border:1px solid var(--sk-border);border-radius:16px;padding:22px;background:#fff}
.search-empty-product h3{margin-bottom:7px}
.search-empty-product p{margin:0;color:var(--sk-muted)}
.article-search-card{overflow:hidden}
.article-search-link{display:block;height:100%}
.article-search-image{height:190px;background:#fff;overflow:hidden;border-bottom:1px solid var(--sk-border)}
.article-search-image img{width:100%;height:100%;object-fit:cover;display:block}
.article-search-placeholder{height:100%;display:grid;place-items:center;background:linear-gradient(135deg,#EDF5FF,#fff);color:var(--sk-blue);font-size:13px;font-weight:900;letter-spacing:.1em}
.article-search-body{padding:18px}
.article-search-body h3{font-size:19px;line-height:1.18}
.article-search-body p{font-size:13px;color:var(--sk-muted);margin:10px 0 14px}
.article-read-more{font-size:12px;font-weight:900;color:var(--sk-blue)}
.page-navigation{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:7px;margin:30px 0 2px}
.page-navigation .page-numbers{min-width:40px;height:40px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--sk-border);border-radius:10px;background:#fff;color:var(--sk-dark);font-size:13px;font-weight:850;transition:.16s}
.page-navigation .page-numbers:hover,.page-navigation .page-numbers.current{background:var(--sk-blue);border-color:var(--sk-blue);color:#fff}
.page-navigation .prev,.page-navigation .next{padding:0 14px}
.archive-navigation{margin-top:30px}
@media(max-width:620px){
  .search-empty-product{align-items:flex-start;flex-direction:column}
  .search-empty-product .product-cta{width:100%}
  .article-search-image{height:210px}
  .page-navigation{gap:5px}
  .page-navigation .page-numbers{min-width:38px;height:38px;padding:0 10px}
}

/* Bundled browsing and shopping illustrations, v1.1.5. */
.browse-image{aspect-ratio:1;margin:-18px -18px 16px;overflow:hidden;border-radius:15px 15px 0 0;background:var(--sk-soft)}
.browse-image img{display:block;width:100%;height:100%;object-fit:contain}
.shopping-image{display:block;width:100%;height:auto;aspect-ratio:9/5;object-fit:contain;border-radius:12px;margin-bottom:20px}
.action-card strong{display:block;margin-top:14px}