/* Visual refinements shared by all six pages. */
.sample-photo{grid-column:2 / -1;margin:18px 0 0;max-width:760px;width:100%;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:20px;align-items:center}.sample-photo .gallery-item{aspect-ratio:4/3}.sample-photo .gallery-item img{object-fit:contain;background:#e9eae3}.sample-photo figcaption{font-size:12px;line-height:1.9;color:var(--muted)}.sample-photo figcaption strong{color:var(--green);font-weight:600}.sample-photo figcaption a{text-decoration:underline}.sample-photo figcaption small{font-size:10px}.product-art{position:relative}.sample-badge{position:absolute;bottom:12px;inset-inline-start:12px;background:#fffefa;padding:5px 10px;border-radius:4px;font-size:11px;color:var(--green)}.sample-credit{font-size:10px;color:var(--muted)}@media(max-width:760px){.sample-photo{grid-column:1 / -1;grid-template-columns:1fr;gap:12px}}

:root{--paper:#f6f5ee;--green:#124e40;--orange:#c8a36a}
body{overflow-wrap:break-word}#site-header{position:sticky;top:0;z-index:50}.site-header{box-shadow:0 4px 24px #133d2910}.main-nav a{position:relative;padding:8px 0}.main-nav a::after{content:'';position:absolute;bottom:0;inset-inline-start:0;width:0;height:2px;background:var(--green2);transition:width .25s}.main-nav a:hover::after,.main-nav a[aria-current]::after{width:100%}
.hero{background:radial-gradient(ellipse at 0 20%,#dce9dd,transparent 60%),var(--paper)}.hero-image{background:linear-gradient(180deg,#122f2810,#122f2838),url('products/strontium-sulfate-2.webp') center/cover;filter:none;animation:photo-enter 1.2s ease both}.hero-copy{animation:copy-enter .8s ease both}.floating-card{border-top:3px solid var(--orange);animation:float-card 7s ease-in-out infinite}.image-label{max-width:95%;border-radius:3px}.hero h1{font-size:clamp(44px,5.5vw,76px)}
.btn{border-radius:5px;transition:transform .25s,box-shadow .25s,background .25s}.btn.primary:hover{background:#23694f;box-shadow:0 12px 25px #194e4026}.product-card{padding:14px;background:#fffefa;border:1px solid #dce3d7;border-radius:12px;transition:transform .35s,box-shadow .35s}.product-card:hover{transform:translateY(-7px);box-shadow:0 20px 42px #193c2415}.product-art{border-radius:8px;overflow:hidden}.product-art img{width:100%;height:100%;object-fit:cover;transition:transform .6s}.product-card:hover img{transform:scale(1.045)}.photo-card .product-art{padding:0}.product-row{scroll-margin-top:110px;padding-block:38px}.page-hero{background:radial-gradient(ellipse at 90% 15%,#dfeadd,transparent 60%);border-bottom:1px solid var(--line)}
.gallery{grid-column:2 / -1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:12px}.gallery-item{display:block;position:relative;overflow:hidden;border-radius:9px;background:#dee5d8;aspect-ratio:4/3}.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .55s,filter .55s}.gallery-item:hover img{transform:scale(1.06);filter:brightness(1.07)}.gallery-item span{position:absolute;bottom:12px;inset-inline-end:12px;background:#fffefa;color:var(--green);width:34px;height:34px;display:grid;place-items:center;border-radius:50%}.gallery-hint{grid-column:2 / -1;color:var(--muted);font-size:11px}
.document-section{background:#e9eee4;scroll-margin-top:85px}.document-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.document-card{background:var(--white);border:1px solid #d6dfd1;padding:26px;border-radius:10px;transition:transform .3s,box-shadow .3s}.document-card:hover{transform:translateY(-5px);box-shadow:0 15px 25px #1c432214}.doc-icon{display:inline-block;border:1px solid #cbd9c6;padding:9px 12px;font-size:11px;letter-spacing:1px;color:var(--green)}.document-card h3{font:500 24px var(--serif);line-height:1.4}.document-card p{font-size:12px;color:var(--muted)}.download-link{display:block;font-size:12px;color:var(--green2);margin-top:16px;text-decoration:underline}.contact-address{font-size:clamp(12px,1.25vw,16px);overflow-wrap:anywhere}.contact-form{border-radius:12px;box-shadow:0 16px 45px #193b2410}.contact-detail>span{flex-shrink:0;border-radius:50%}.contact-detail div{min-width:0}.contact-form input,.contact-form select,.contact-form textarea{border-radius:5px}.note{border-inline-start:3px solid #a1b595}.row-spec span,.row-spec strong,.stat-grid strong{direction:ltr;unicode-bidi:isolate}
.skip-link{position:fixed;top:-100px;inset-inline-start:20px;z-index:1000;padding:12px 20px;background:white;border:2px solid var(--green)}.skip-link:focus{top:12px}:focus-visible{outline:3px solid #bb873f;outline-offset:4px}main{min-width:0}section[id],article[id]{scroll-margin-top:95px}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}.reveal.visible{opacity:1;transform:none}.scroll-progress{position:fixed;top:0;left:0;width:100%;height:3px;background:var(--orange);z-index:100;transform-origin:left;transform:scaleX(0);pointer-events:none}.back-top{position:fixed;bottom:22px;inset-inline-end:22px;background:var(--green);color:white;border:1px solid #aec6af;width:44px;height:44px;border-radius:50%;cursor:pointer;z-index:40;opacity:0;visibility:hidden;transition:.3s}.back-top.shown{opacity:1;visibility:visible}
.lightbox{border:0;padding:22px;background:#112b25;color:#fff;max-width:94vw;width:1000px;border-radius:12px;max-height:94vh}.lightbox::backdrop{background:#061a15e8;backdrop-filter:blur(5px)}.lightbox img{display:block;max-width:100%;width:100%;height:68vh;object-fit:contain}.lightbox-bar{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-bottom:12px}.lightbox button{border:1px solid #799d8c;background:transparent;color:white;cursor:pointer;border-radius:5px;padding:8px 14px}.lightbox-controls{display:flex;gap:12px;justify-content:center;margin-top:12px}.lightbox-caption{font-size:13px}
html[dir=rtl] h1,html[dir=rtl] h2,html[dir=rtl] h3{font-family:'Vazirmatn',Tahoma,sans-serif!important}html[dir=rtl] .document-card h3{font-size:20px}html[dir=rtl] .brand{direction:ltr}html[dir=rtl] .hero h1{font-size:clamp(38px,4.5vw,64px)}
@keyframes copy-enter{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}@keyframes photo-enter{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}@keyframes float-card{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
@media(max-width:900px){.document-grid{grid-template-columns:1fr}.contact-address{font-size:14px}.main-nav{gap:14px}}@media(max-width:760px){.hero-visual{height:400px}.gallery{grid-column:1 / -1;grid-template-columns:repeat(2,minmax(0,1fr))}.gallery-hint{grid-column:1 / -1}.gallery-item:last-child:nth-child(odd){grid-column:1 / -1;max-height:300px}.product-row{padding-block:30px}.lightbox{padding:12px}.lightbox img{height:60vh}.floating-card{width:210px}.hero h1,.page-hero h1{font-size:44px}.site-header{gap:12px}.header-tools{flex-shrink:0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto!important}*,*::before,*::after{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}