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0;border-bottom:1px solid #edf0f2}.quote-item-art{width:76px;height:76px;flex:0 0 auto;display:grid;place-items:center;border-radius:11px;background:#f1f7f7}.quote-item-art .product-illustration{width:67px;height:67px}.quote-item-info{min-width:0;flex:1;display:grid;align-content:start;gap:3px}.quote-item-info>b{font:600 13px "DM Sans",sans-serif;direction:ltr;text-align:left;color:#2d4054}.quote-item-info>small{font:10px "DM Sans",sans-serif;direction:ltr;text-align:left;color:#7b8997}.quote-item-info>span{font-size:9px;color:#84919c}.qty-control{display:flex;align-items:center;gap:5px;direction:ltr}.qty-control>button:not(.remove-item){width:24px;height:24px;border:1px solid #d9e2e8;border-radius:5px;background:#fff;color:#3e6b7b}.qty-control input{width:40px;height:24px;border:1px solid #d9e2e8;border-radius:5px;text-align:center;font:11px "DM Sans",sans-serif}.qty-control 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.button{width:100%;margin-top:7px;min-height:39px;font-size:11px}.button-whatsapp{background:#299f64;color:#fff}.button-email{border-color:#c9d7df;color:#375b70;background:#fff}.toast{position:fixed;z-index:60;bottom:24px;left:50%;transform:translate(-50%,20px);opacity:0;pointer-events:none;padding:10px 17px;border-radius:9px;background:#102b4e;color:white;font-size:11px;box-shadow:var(--shadow);transition:.25s}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:1050px){.header-main{grid-template-columns:190px 1fr 160px;gap:15px}.nav{gap:21px}.hero-copy{padding:42px 39px 30px}.hero h1{font-size:32px}.category-grid{grid-template-columns:repeat(3,1fr)}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-layout{grid-template-columns:205px 1fr;gap:17px}}
@media(max-width:720px){.container{width:min(100% - 30px,540px)}.topline{display:none}.header-main{min-height:68px;grid-template-columns:1fr auto auto;gap:10px}.brand-mark{width:37px;height:37px}.brand-name{font-size:18px}.quote-trigger{height:38px;width:42px;gap:4px}.quote-trigger span{display:none}.quote-trigger svg{width:17px}.quote-trigger b{min-width:18px;height:18px;font-size:9px}.menu-toggle{display:block}.searchbar{grid-row:2;grid-column:1/-1;margin:0 0 12px;height:43px}.searchbar input{font-size:11px;padding:0 9px}.search-select{font-size:12px;padding:0 8px;gap:5px}.search-submit{width:45px}.suggestions{right:45px}.site-header .container.header-main{padding-top:10px}.nav{display:none;height:auto;padding:3px 0 13px;flex-direction:column;align-items:stretch;gap:0}.nav.nav-open{display:flex}.nav>a{height:38px;border-top:1px solid #eff2f4}.nav-note{margin:8px 0}.hero{margin-top:17px;grid-template-columns:1fr;min-height:0}.hero-copy{padding:31px 24px 23px}.hero h1{font-size:29px}.hero-copy>p{font-size:12px}.hero-proof{gap:12px;justify-content:space-between;margin-top:21px;padding-top:13px}.hero-proof span{gap:5px;font-size:8px}.hero-visual{min-height:250px}.orb-one{width:200px;height:200px;top:30px;left:calc(50% - 100px)}.orb-two{width:145px;height:145px;top:57px;left:calc(50% - 72px)}.molecule svg{width:190px;left:calc(50% - 104px);top:53px}.molecule i{left:calc(50% - 80px);top:128px}.molecule i:nth-of-type(2){left:calc(50% - 39px);top:75px}.molecule i:nth-of-type(3){left:calc(50% + 27px);top:88px}.molecule i:nth-of-type(4){left:calc(50% + 10px);top:172px}.flask{width:66px;height:111px;left:calc(50% - 49px);top:93px}.flask .neck{width:21px;height:33px;left:21px}.cylinder{width:33px;height:87px;left:calc(50% + 39px);top:110px}.petri{width:82px;height:24px;left:calc(50% - 20px);top:197px}.visual-caption{left:15px;bottom:12px;padding:6px 8px}.visual-caption b{font-size:9px}.visual-caption small{font-size:8px}.caption-icon{width:24px;height:24px}.visual-label{font-size:7px}.label-top{right:14px;top:14px}.label-bottom{right:12px;bottom:17px;font-size:6px}.category-section,.brands-section{padding:49px 0}.section-head h2{font-size:20px}.section-head{margin-bottom:17px}.category-grid{grid-template-columns:repeat(2,1fr);gap:9px}.category-card{min-height:82px;padding:10px;gap:8px}.category-icon{width:35px;height:35px;font-size:20px}.category-text b{font-size:10px}.category-text small{font-size:7px}.category-arrow{font-size:14px}.catalog-section{padding:48px 0}.catalog-layout{grid-template-columns:1fr;gap:13px}.filters{position:static;padding:11px 12px}.filter-heading{padding-bottom:8px}.filter-search{padding:8px 0}.filter-group{padding:9px 0}.filter-group>div{display:flex;flex-wrap:wrap;gap:0 14px}.check-row{margin-top:7px}.filter-note{display:none}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.product-visual{height:130px}.product-illustration{width:100px;height:100px}.product-info{padding:9px}.product-info h3{font-size:12px;min-height:35px}.product-meta{font-size:9px}.price-contact{font-size:8px}.add-quote{height:31px;font-size:9px}.brand-tiles{grid-template-columns:repeat(2,1fr)}.brand-tile{height:105px;border-bottom:1px solid var(--line)}.brand-tile:nth-child(3){border-inline-start:0}.brand-tile:nth-child(n+3){border-bottom:0}.brands-section .section-head{align-items:start;flex-direction:column}.about-band{margin-bottom:47px;padding:22px 18px;display:grid;grid-template-columns:auto 1fr;gap:13px}.about-icon{width:46px;height:46px}.about-icon svg{width:28px}.about-band h2{font-size:16px}.about-band p{font-size:10px}.about-band .button{grid-column:1/-1;width:max-content}.footer-main{padding:34px 0 25px;grid-template-columns:repeat(2,1fr);gap:25px 15px}.footer-brand{grid-column:1/-1}.footer-brand>p{max-width:310px}.footer-main h3{font-size:11px}.footer-bottom{height:42px}.quote-drawer{padding:19px 17px}.drawer-head h2{font-size:18px}}
@media(max-width:380px){.container{width:calc(100% - 22px)}.hero h1{font-size:25px}.hero-proof span{font-size:7px}.category-grid{grid-template-columns:1fr}.category-card{min-height:71px}.product-grid{gap:7px}.product-info{padding:7px}.product-info h3{font-size:11px}.product-meta{font-size:8px}}
.product-title{display:block;min-height:40px;margin:4px 0 9px;padding:0;border:0;background:none;text-align:left;direction:ltr;color:#263c53;font:600 14px/1.45 "DM Sans","Vazirmatn",sans-serif}.product-title:hover{color:#287e87;text-decoration:underline;text-underline-offset:3px}.detail-overlay{position:fixed;z-index:50;inset:0;background:#0c1d2d77;backdrop-filter:blur(3px);display:grid;place-items:center;padding:20px}.detail-overlay[hidden]{display:none}.detail-modal{width:min(720px,100%);min-height:350px;position:relative;display:grid;grid-template-columns:230px 1fr;gap:25px;padding:30px;border-radius:18px;background:#fff;box-shadow:0 24px 80px #07192b45}.detail-close{position:absolute;z-index:2;top:12px;left:12px;width:34px;height:34px;border:1px solid var(--line);border-radius:9px;background:white;color:#526477;font-size:23px;line-height:1}.detail-art{align-self:start;margin-top:35px;width:100%;min-height:190px;border-radius:14px;background:#f0f7f7;display:grid;place-items:center}.detail-art .product-illustration{width:160px;height:160px}.detail-content{padding-top:8px}.detail-content>.eyebrow{margin-bottom:6px}.detail-content h2{margin:4px 0;color:var(--navy);font:700 23px/1.3 "DM Sans","Vazirmatn",sans-serif;direction:ltr;text-align:left}.detail-brand{margin:3px 0 14px;color:#6a8191;font:12px "DM Sans",sans-serif;direction:ltr;text-align:left}.detail-fields{border-top:1px solid var(--line)}.detail-fields>div{display:flex;justify-content:space-between;gap:16px;padding:7px 0;border-bottom:1px solid #edf0f2;direction:ltr;font:11px "DM Sans",sans-serif}.detail-fields span{color:#788797}.detail-fields b{font-weight:500;color:#40566a;text-align:right}.detail-note{margin:12px 0;color:#768591;font-size:10px;line-height:1.8}.detail-content>.button{font-size:11px}
@media(max-width:720px){.detail-modal{grid-template-columns:1fr;gap:13px;padding:20px;max-height:90vh;overflow:auto}.detail-art{margin:23px auto 0;max-width:180px;min-height:145px}.detail-art .product-illustration{width:130px;height:130px}.detail-content h2{font-size:19px}.detail-fields>div{font-size:10px}.product-title{font-size:12px;min-height:35px}}
html,body{overflow-x:clip}
@media (min-width:721px) and (max-width:1200px){.category-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.sigma-search-link{display:flex;align-items:center;gap:11px;padding:12px 14px;background:#f4f8fb;border-top:1px solid #e7edf1;color:#275d78;direction:ltr}.sigma-search-link:hover{background:#eaf3f7}.sigma-search-link>span:first-child{width:29px;height:29px;flex:0 0 auto;display:grid;place-items:center;border-radius:8px;background:#e2eff3;color:#33768a;font-size:17px}.sigma-search-link>span:last-child{display:grid;gap:2px}.sigma-search-link b{font:600 12px "DM Sans",sans-serif}.sigma-search-link small{font:10px "DM Sans",sans-serif;color:#778897}
.sigma-cas-form{padding:11px 14px 13px;border-top:1px solid #e7edf1;background:#fff;direction:ltr;text-align:left}.sigma-cas-form label{display:block;margin-bottom:6px;color:#40566a;font:600 11px "DM Sans",sans-serif}.sigma-cas-form>div{display:flex;gap:7px}.sigma-cas-form input{min-width:0;flex:1;height:35px;padding:0 9px;border:1px solid #d5e0e6;border-radius:6px;color:#20364c;font:11px "DM Sans",sans-serif}.sigma-cas-form button{padding:0 11px;border:0;border-radius:6px;background:#173c64;color:#fff;font:600 10px "DM Sans",sans-serif;white-space:nowrap}.sigma-cas-form>small{display:block;margin-top:5px;color:#778897;font:9px "DM Sans",sans-serif}.quote-item-info small a{color:#2c7189;text-decoration:underline;text-underline-offset:2px}
.product-visual>.product-photo{width:100%;height:100%;padding:16px;object-fit:contain}.detail-art>.product-photo{max-width:100%;max-height:190px;object-fit:contain}.detail-description{margin:6px 0 12px;color:#50687b;font:12px/1.7 "DM Sans","Vazirmatn",sans-serif;direction:ltr;text-align:left}.detail-description[hidden]{display:none}
.quote-quantity-label{font-size:9px;color:#84919c}.qty-control input[type="text"]{width:auto;min-width:0;flex:1;padding:0 8px;text-align:left;direction:auto;font:11px "Vazirmatn","DM Sans",sans-serif}.qty-control .remove-item{margin-left:0;margin-inline-start:auto}
.pubchem-status{margin:8px 0 14px;padding:10px 13px;border-radius:8px;background:#eef5f8;color:#315c70;font-size:11px}.pubchem-status[hidden]{display:none}.pubchem-source{display:inline-block;margin:4px 0 8px;color:#317888;text-decoration:underline;text-underline-offset:2px;font-size:10px}.suggestion-pubchem-status{padding:8px 14px;background:#eef5f8;color:#315c70;font:10px "Vazirmatn","DM Sans",sans-serif;direction:rtl}.quote-item-art>.product-photo{width:100%;height:100%;padding:5px;object-fit:contain}
.catalog-category-group{margin:0 0 28px;padding:20px;border:1px solid var(--line);border-radius:14px;background:#fff}.catalog-category-heading{display:flex;align-items:end;justify-content:space-between;gap:15px;margin-bottom:14px}.catalog-category-heading .eyebrow{font-size:10px}.catalog-category-heading h3{margin:3px 0 0;color:var(--navy);font-size:18px}.catalog-category-count{color:#718395;font-size:12px;white-space:nowrap}.category-more{display:block;min-height:40px;margin:17px auto 0;padding:0 21px;border:1px solid #9ab8ca;border-radius:8px;background:#fff;color:#173c64;font:600 13px "Vazirmatn",sans-serif;cursor:pointer}.category-more:hover{background:#edf4f8;border-color:#173c64}.catalog-category-group .product-grid{grid-template-columns:repeat(3,minmax(0,1fr))}@media(max-width:1050px){.catalog-category-group .product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:720px){.catalog-category-group{padding:12px;margin-bottom:16px}.catalog-category-heading h3{font-size:16px}.catalog-category-group .product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.category-more{width:100%;margin-top:12px}}
.category-empty{min-height:90px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px;border:1px dashed #b9cbd7;border-radius:10px;background:#f8fbfd}.category-empty p{margin:0;color:#708193;font-size:13px}.category-empty a{flex:0 0 auto;color:#173c64;font-size:13px;font-weight:600;text-decoration:underline;text-underline-offset:3px}@media(max-width:720px){.category-empty{align-items:stretch;flex-direction:column;padding:14px}.category-empty a{font-size:12px}}
.product-grid.grouped-catalog{display:block}
.catalog-head-actions{display:flex;align-items:center;gap:22px}
.catalog-page .hero,.catalog-page #categories,.catalog-page #brands,.catalog-page #about{display:none}
.catalog-page .catalog-section{padding-top:30px}
.catalog-page .catalog-category-group{scroll-margin-top:145px}
.catalog-page .catalog-layout{min-height:55vh}
.catalog-page .product-grid:not(.grouped-catalog){grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.catalog-page .product-card{min-height:100%;border:1px solid #e4ebf0;border-radius:14px;overflow:hidden;box-shadow:0 6px 20px #173c6408;transition:transform .2s ease,box-shadow .2s ease}
.catalog-page .product-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px #173c6414}
.catalog-page .product-visual{height:220px;background:linear-gradient(145deg,#f8fbfc,#eef4f7)}
.catalog-page .product-visual[data-detail]{cursor:pointer}
.catalog-page .product-visual .product-photo{transition:transform .2s ease}
.catalog-page .product-visual:hover .product-photo{transform:scale(1.035)}
.catalog-page .product-info{padding:16px}
.catalog-page .product-title{min-height:50px;font-size:15px}
.catalog-head-actions{display:flex;align-items:center;gap:17px;flex-wrap:wrap;justify-content:flex-end}
.catalog-sort-label{display:flex;align-items:center;gap:8px;color:#708193;font-size:11px;white-space:nowrap}
.catalog-sort-label select{min-height:36px;padding:0 10px;border:1px solid #d8e2e8;border-radius:7px;background:white;color:#334b60;font-size:11px}
.catalog-load-more{grid-column:1/-1;display:flex;align-items:center;justify-content:center;gap:12px;min-height:48px;margin:12px auto 20px;padding:0 27px;border:1px solid #a8c1cf;border-radius:9px;background:white;color:#173c64;font-weight:700}
.catalog-load-more:hover{background:#eff7f8;border-color:#438c97}
.product-image-note,.detail-image-note{position:absolute;z-index:2;bottom:10px;left:10px;padding:3px 7px;border-radius:5px;background:#173c64d9;color:white;font:9px "Vazirmatn",sans-serif}
.detail-art{position:relative;overflow:hidden}
.detail-image-note{position:static;display:block;align-self:end;margin-top:-12px;background:#eaf1f5;color:#50687b;text-align:center}
.detail-description[dir="rtl"]{direction:rtl;text-align:right;font-family:"Vazirmatn","DM Sans",sans-serif}
@media(max-width:1050px){.catalog-page .product-grid:not(.grouped-catalog){grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){.catalog-head-actions{align-items:flex-start;flex-direction:column;gap:8px}.catalog-page .catalog-section{padding-top:18px}.catalog-page .product-grid:not(.grouped-catalog){grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.catalog-page .product-visual{height:145px}.catalog-page .product-info{padding:9px}.catalog-page .product-title{font-size:12px;min-height:38px}.catalog-load-more{width:100%}}

.faq-section{padding:62px 0 70px;scroll-margin-top:145px}
.faq-head{margin-bottom:18px}
.faq-head .section-subtitle{max-width:620px;margin:9px 0 0}
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.faq-item{min-width:0;padding:0 17px;border:1px solid var(--line);border-radius:12px;background:var(--white);transition:border-color .2s,box-shadow .2s}
.faq-item:hover{border-color:#bad3d8}
.faq-item[open]{border-color:#94c7c6;box-shadow:0 8px 24px #173c6408}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:58px;list-style:none;color:var(--navy);font-size:13px;font-weight:600;cursor:pointer}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary>span:first-child{display:block;flex:1;min-width:0;height:auto;border-radius:0;background:transparent;color:inherit;font:inherit;line-height:1.7;overflow-wrap:anywhere}
.faq-item summary>span[aria-hidden="true"]{display:grid;place-items:center;flex:0 0 26px;width:26px;height:26px;border-radius:8px;background:#eaf6f3;color:#287e87;font:18px "DM Sans",sans-serif;transition:transform .2s}
.faq-item[open] summary>span[aria-hidden="true"]{transform:rotate(45deg)}
.faq-answer{padding:0 0 14px;color:#607286;font-size:12px;line-height:2}
.faq-answer p{margin:0}
.faq-answer bdi{font-family:"DM Sans",sans-serif;font-weight:600;color:#40566a}
@media(max-width:720px){.faq-section{padding:45px 0}.faq-grid{grid-template-columns:1fr;gap:9px}.faq-item{padding:0 13px}.faq-item summary{min-height:54px;font-size:12px}.faq-answer{font-size:11px}}

/* Keep product imagery inside its card and prevent broken image alt text from obscuring names. */
.product-visual{overflow:hidden;isolation:isolate}
.product-visual:after{z-index:0;pointer-events:none}
.product-visual>.product-photo{position:relative;z-index:1;display:block;max-width:100%;max-height:100%;object-fit:contain}
.product-visual>.product-illustration{z-index:1}
.product-info{min-width:0}
.product-title{width:100%;overflow-wrap:anywhere;unicode-bidi:plaintext}

/* Keep category jumps clear of the sticky header and align the catalog results consistently. */
#catalog-results{scroll-margin-top:145px}
.catalog-category-group{scroll-margin-top:145px}

/* Accessibility and consistent Persian RTL presentation */
.skip-link{position:fixed;z-index:100;top:-60px;right:16px;padding:10px 16px;border-radius:8px;background:#fff;color:#102b4e;box-shadow:0 8px 24px #0b1c2d30;font-size:13px;font-weight:700;transition:top .18s ease}
.skip-link:focus{top:12px}
:where(a,button,input,select,textarea,[tabindex]):focus-visible{outline:3px solid #59b9bd;outline-offset:3px}
.product-meta{direction:rtl;font-family:"Vazirmatn","DM Sans",sans-serif}
.product-meta span{text-align:right}
.product-meta b{max-width:62%;text-align:left;overflow-wrap:anywhere;unicode-bidi:plaintext}
.detail-fields>div{direction:rtl;font-family:"Vazirmatn","DM Sans",sans-serif}
.detail-fields span{text-align:right}
.detail-fields b{max-width:65%;text-align:left;overflow-wrap:anywhere;unicode-bidi:plaintext}
.detail-description[dir="rtl"]{font-family:"Vazirmatn","DM Sans",sans-serif;unicode-bidi:plaintext}
.sigma-search-link{direction:rtl;text-align:right}
.sigma-search-link>span:last-child{min-width:0}
.sigma-search-link small{line-height:1.8}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
.suggestions button{direction:rtl;text-align:right}
.suggestions b{direction:ltr;text-align:left}
.suggestions small,.suggestion-empty{direction:rtl;text-align:right;unicode-bidi:plaintext;line-height:1.8}
.sigma-search-link bdi{direction:ltr;unicode-bidi:isolate}
.contact-action.is-disabled{color:#98a3ad;cursor:not-allowed}
.quote-send .button.is-disabled{opacity:.55;cursor:not-allowed}
:where([hidden]) { display: none !important; }