/* ===== Fonts (self-hosted, no CDN) ===== */
@font-face{font-family:Vazirmatn;src:url(../fonts/Vazirmatn-Regular.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:Vazirmatn;src:url(../fonts/Vazirmatn-Medium.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:Vazirmatn;src:url(../fonts/Vazirmatn-Bold.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:Vazirmatn;src:url(../fonts/Vazirmatn-Black.woff2) format("woff2");font-weight:900;font-display:swap}

:root{
  --accent:#f26b1d; --accent-d:#d9560c;
  --dark:#1b1e23; --dark-2:#23272e; --steel:#3a4049;
  --text:#4b525c; --head:#16191d; --muted:#8a919b;
  --bg:#fff; --bg-alt:#f4f5f7; --line:#e4e6ea;
  --r:6px; --shadow:0 10px 30px rgba(16,20,26,.08);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;overflow-x:clip;font-family:Vazirmatn,Tahoma,sans-serif;font-size:16px;line-height:1.9;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{color:var(--head);line-height:1.45;margin:0 0 .6em;font-weight:900}
h2{font-size:clamp(1.6rem,3vw,2.35rem)}
h3{font-size:1.12rem;font-weight:700}
p{margin:0 0 1em}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.i{width:18px;height:18px;flex:none}
.ltr{direction:ltr;unicode-bidi:embed;display:inline-block}
.muted{color:var(--muted);font-size:.9rem}
[hidden]{display:none!important}

/* ===== Buttons / labels ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:.85em 1.9em;border-radius:var(--r);font-weight:700;font-size:.95rem;border:2px solid transparent;transition:.25s;cursor:pointer;white-space:nowrap}
.btn--accent{background:var(--accent);color:#fff}
.btn--accent:hover{background:var(--accent-d)}
.btn--ghost{border-color:rgba(255,255,255,.7);color:#fff}
.btn--ghost:hover{background:#fff;color:var(--head)}
.btn--dark{background:var(--dark-2);color:#fff}
.btn--dark:hover{background:var(--accent)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--accent);font-weight:700;font-size:.95rem;margin-bottom:.7em}
.eyebrow::before{content:"";width:28px;height:3px;background:currentColor;border-radius:2px}

/* ===== Top bar ===== */
.topbar{background:var(--dark);color:#c9cdd3;font-size:.85rem}
.topbar__in{display:flex;align-items:center;gap:28px;min-height:44px}
.topbar__item{display:flex;align-items:center;gap:8px}
.topbar__item .i{color:var(--accent)}
.topbar__social{margin-inline-start:auto;display:flex;gap:14px}
.topbar__social a:hover{color:var(--accent)}

/* ===== Header ===== */
.header{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 2px 14px rgba(0,0,0,.06)}
.header__in{display:flex;align-items:center;gap:28px;min-height:84px}
.brand{display:flex;align-items:center;gap:12px}
.brand__txt{display:flex;flex-direction:column;line-height:1.3}
.brand__txt b{font-size:1.3rem;font-weight:900;color:var(--head)}
.brand__txt small{color:var(--accent);font-weight:500;font-size:.8rem}
.nav{display:flex;gap:4px;margin-inline-start:auto}
.nav a{padding:.5em .9em;font-weight:700;color:var(--head);position:relative;transition:.2s}
.nav a::after{content:"";position:absolute;inset-inline:.9em;bottom:2px;height:2px;background:var(--accent);transform:scaleX(0);transition:.25s}
.nav a:hover,.nav a.is-current{color:var(--accent)}
.nav a:hover::after,.nav a.is-current::after{transform:scaleX(1)}
.burger{display:none;background:none;border:0;padding:8px;cursor:pointer;margin-inline-start:auto}
.burger span{display:block;width:26px;height:2px;background:var(--head);margin:6px 0;transition:.3s}

/* ===== Hero ===== */
.hero{position:relative;height:min(88vh,760px);min-height:520px;background:var(--dark);overflow:hidden}
.hero__slide{position:absolute;inset:0;display:flex;align-items:center;opacity:0;visibility:hidden;transition:opacity 1s,visibility 1s}
.hero__slide::before{content:"";position:absolute;inset:0;background:var(--img) center/cover no-repeat;transform:scale(1.08);transition:transform 7s ease-out}
.hero__slide::after{content:"";position:absolute;inset:0;background:linear-gradient(270deg,rgba(14,16,20,.92) 0%,rgba(14,16,20,.7) 45%,rgba(14,16,20,.25) 100%)}
.hero__slide.is-active{opacity:1;visibility:visible}
.hero__slide.is-active::before{transform:scale(1)}
.hero__content{position:relative;z-index:2;color:#e7e9ec;width:100%}
.hero__content>*{max-width:720px}
.hero h1,.hero .hero__title{color:#fff;font-size:clamp(1.9rem,4.4vw,3.3rem);line-height:1.35}
.hero__title small{display:block;font-size:.62em;font-weight:700;color:#e7e9ec;margin-top:.25em}
.hero p{font-size:1.1rem;opacity:.9}
.hero__btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:1.6em}
.hero__slide .hero__content>*{opacity:0;transform:translateY(24px);transition:.8s}
.hero__slide.is-active .hero__content>*{opacity:1;transform:none}
.hero__slide.is-active .hero__content>:nth-child(2){transition-delay:.15s}
.hero__slide.is-active .hero__content>:nth-child(3){transition-delay:.3s}
.hero__slide.is-active .hero__content>:nth-child(4){transition-delay:.45s}
.hero__dots{position:absolute;z-index:3;bottom:34px;left:50%;transform:translateX(-50%);display:flex;gap:10px}
.hero__dots button{width:12px;height:12px;border-radius:50%;border:2px solid #fff;background:transparent;padding:0;cursor:pointer;transition:.3s}
.hero__dots button.is-active{background:var(--accent);border-color:var(--accent);width:34px;border-radius:8px}

/* ===== Sections ===== */
.section{padding:100px 0}
.section--alt{background:var(--bg-alt)}
.head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:50px}
.head>p{max-width:480px;margin:0}
.head h2{margin:0}
.head--center{justify-content:center;text-align:center}
.head--center .eyebrow{justify-content:center}

/* About */
.about__grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.about__media{position:relative;padding-bottom:90px;padding-inline-start:70px}
.about__media img{border-radius:var(--r);object-fit:cover;box-shadow:var(--shadow)}
.about__img1{width:100%;aspect-ratio:4/3.4}
.about__img2{position:absolute;bottom:0;inset-inline-start:0;width:55%;aspect-ratio:4/3;border:8px solid #fff}
.about__badge{position:absolute;top:30px;inset-inline-start:0;background:var(--accent);color:#fff;padding:18px 22px;border-radius:var(--r);text-align:center;line-height:1.3;box-shadow:var(--shadow)}
.about__badge b{display:block;font-size:2.2rem;font-weight:900}
.lead{font-size:1.1rem;color:var(--head);font-weight:500}
.checks{list-style:none;padding:0;margin:1.2em 0 2em;display:grid;grid-template-columns:1fr 1fr;gap:10px 24px}
.checks li{position:relative;padding-inline-start:30px;font-weight:500;color:var(--head)}
.checks li::before{content:"";position:absolute;inset-inline-start:0;top:.5em;width:18px;height:18px;border-radius:50%;background:var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='none' stroke='%23fff' stroke-width='3.5' d='m5 12 5 5 9-10'/%3E%3C/svg%3E") center/11px no-repeat}
.about__sign{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid var(--line);padding-top:24px}
.about__sign b{display:block;color:var(--head);font-size:1.1rem}
.about__sign span{color:var(--muted);font-size:.9rem}

/* Features */
.features{padding:80px 0}
.features__grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.feature{background:#fff;padding:30px 20px;border-radius:var(--r);text-align:center;transition:.3s;border-bottom:3px solid transparent}
.feature:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--accent)}
.feature__ic{width:46px;height:46px;color:var(--accent);margin-bottom:14px}
.feature h3{font-size:1.02rem}
.feature p{font-size:.88rem;margin:0;line-height:1.8}

/* Services cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.card{background:#fff;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);transition:.3s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px)}
.card__img{position:relative;aspect-ratio:16/10;overflow:hidden}
.card__img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.card:hover .card__img img{transform:scale(1.07)}
.card__tag{position:absolute;top:16px;inset-inline-start:16px;background:var(--accent);color:#fff;font-size:.78rem;font-weight:700;padding:3px 12px;border-radius:30px}
.card__body{padding:26px 26px 22px;border-top:3px solid var(--accent);flex:1}
.card__body p{margin:0;font-size:.95rem}

/* Stats */
.stats{position:relative;padding:90px 0;color:#fff;background:var(--dark)}
.stats::before{content:"";position:absolute;inset:0;background:var(--img) center/cover fixed;opacity:.18}
.stats__grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat b{font-size:clamp(2.4rem,5vw,3.6rem);font-weight:900;line-height:1}
.stat span{color:var(--accent);font-weight:900;font-size:1.6rem;margin-inline-start:4px}
.stat p{margin:.6em 0 0;color:#c9cdd3}
.stat{padding:10px;border-inline-start:1px solid rgba(255,255,255,.12)}
.stat:first-child{border:0}

/* Lab */
.lab__grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.spec{width:100%;border-collapse:collapse;margin-top:1em;font-size:.95rem}
.spec th,.spec td{padding:11px 14px;text-align:start;border-bottom:1px solid var(--line)}
.spec th{color:var(--head);font-weight:700;width:45%}
.spec tr:nth-child(odd){background:var(--bg-alt)}
.spec tr:hover th{color:var(--accent)}
.lab__media{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.lab__media img{border-radius:var(--r);aspect-ratio:1;object-fit:cover;box-shadow:var(--shadow)}
.lab__media img:nth-child(even){transform:translateY(30px)}

/* Industries */
.ind__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.ind{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:3/3.6}
.ind img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.ind::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(14,16,20,.9),rgba(14,16,20,0) 60%)}
.ind h3{position:absolute;z-index:1;bottom:0;inset-inline:0;margin:0;padding:22px;color:#fff;border-bottom:4px solid var(--accent)}
.ind:hover img{transform:scale(1.08)}

/* Video */
.video__el{width:100%;max-width:960px;margin:0 auto;display:block;border-radius:var(--r);box-shadow:var(--shadow);background:#000}

/* Gallery */
.filters{display:flex;flex-wrap:wrap;gap:8px}
.filters button{font:inherit;font-weight:700;font-size:.9rem;background:var(--bg-alt);border:0;padding:.5em 1.2em;border-radius:30px;cursor:pointer;color:var(--head);transition:.2s}
.filters button.is-active,.filters button:hover{background:var(--accent);color:#fff}
.gal{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gal a{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;background:var(--bg-alt)}
.gal img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.gal a::after{content:"+";position:absolute;inset:0;display:grid;place-items:center;font-size:2.6rem;color:#fff;background:rgba(242,107,29,.7);opacity:0;transition:.3s}
.gal a:hover::after{opacity:1}
.gal a:hover img{transform:scale(1.08)}

/* CTA */
.cta{position:relative;padding:80px 0;background:var(--accent);color:#fff;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:var(--img) center/cover;opacity:.15;mix-blend-mode:multiply}
.cta__in{position:relative;display:flex;align-items:center;justify-content:space-between;gap:30px}
.cta h2{color:#fff}
.cta p{margin:0;opacity:.95;max-width:620px}
.cta .btn--accent{background:var(--dark);flex:none}
.cta .btn--accent:hover{background:#000}

/* Contact */
.contact__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.cbox{background:var(--bg-alt);padding:40px 30px;border-radius:var(--r);text-align:center;transition:.3s}
.cbox:hover{background:#fff;box-shadow:var(--shadow)}
.cbox__ic{width:56px;height:56px;padding:14px;border-radius:50%;background:var(--accent);color:#fff;margin:0 auto 18px}
.cbox p{margin:0 0 .4em}
.cbox a:hover{color:var(--accent)}
.cbox>a{color:var(--accent);font-weight:700}

/* Footer */
.footer{background:var(--dark);color:#a9afb8;font-size:.92rem}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding:80px 20px 50px}
.footer h4{color:#fff;font-size:1.05rem;margin-bottom:1.1em;position:relative;padding-bottom:.6em}
.footer h4::after{content:"";position:absolute;bottom:0;inset-inline-start:0;width:30px;height:2px;background:var(--accent)}
.footer ul{list-style:none;margin:0;padding:0}
.footer li{margin-bottom:.5em}
.footer a:hover{color:var(--accent)}
.footer__brand img{margin-bottom:18px}
.footer__social{display:flex;gap:10px;margin-top:14px}
.footer__social a{width:40px;height:40px;display:grid;place-items:center;border-radius:50%;background:var(--steel);color:#fff;transition:.2s}
.footer__social a:hover{background:var(--accent);color:#fff}
.footer__bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:.85rem;text-align:center}

/* To top */
.totop{position:fixed;bottom:24px;left:24px;z-index:40;width:46px;height:46px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.3s}
.totop.show{opacity:1;pointer-events:auto}

/* Lightbox */
.lb{position:fixed;inset:0;z-index:100;background:rgba(10,12,15,.94);display:flex;align-items:center;justify-content:center;padding:40px 70px}
.lb img{max-height:90vh;border-radius:var(--r)}
.lb button{position:absolute;background:none;border:0;color:#fff;font-size:3rem;cursor:pointer;line-height:1;padding:10px}
.lb button:hover{color:var(--accent)}
.lb__x{top:10px;left:16px}
.lb__prev{right:10px}
.lb__next{left:10px}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s,transform .8s}
.reveal.in{opacity:1;transform:none}

/* ===== Responsive ===== */
@media (max-width:1100px){
  .features__grid{grid-template-columns:repeat(3,1fr)}
  .header__cta{display:none}
}
@media (max-width:900px){
  .section{padding:70px 0}
  .topbar__hide{display:none}
  .burger{display:block}
  .nav{position:fixed;top:0;bottom:0;right:0;width:min(300px,82vw);flex-direction:column;gap:0;background:#fff;padding:90px 20px 20px;box-shadow:-10px 0 30px rgba(0,0,0,.15);transform:translateX(100%);visibility:hidden;transition:transform .35s,visibility .35s;z-index:60}
  .nav a{padding:.9em 0;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  body.nav-open .nav{transform:none;visibility:visible}
  body.nav-open .burger{position:relative;z-index:70}
  body.nav-open .burger span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  body.nav-open .burger span:nth-child(2){opacity:0}
  body.nav-open .burger span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
  .about__grid,.lab__grid{grid-template-columns:1fr;gap:50px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .stats__grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border:0}
  .ind__grid,.gal{grid-template-columns:repeat(3,1fr)}
  .contact__grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
  .head{flex-direction:column;align-items:flex-start;gap:16px}
  .head--center{align-items:center}
  .cta__in{flex-direction:column;text-align:center}
  .stats::before{background-attachment:scroll}
}
@media (max-width:600px){
  .hero__slide::before{background-image:var(--img-sm,var(--img))}
  .topbar__item{font-size:.75rem}
  .topbar__in{gap:12px}
  .brand__txt small{display:none}
  .features__grid,.cards{grid-template-columns:1fr 1fr}
  .cards{grid-template-columns:1fr}
  .checks{grid-template-columns:1fr}
  .about__media{padding-inline-start:30px;padding-bottom:60px}
  .ind__grid,.gal{grid-template-columns:1fr 1fr}
  .footer__grid{grid-template-columns:1fr}
  .lb{padding:20px}
  .about__sign{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* ===== Clickable service cards ===== */
.cards--link .card{position:relative}
.card__link::after{content:"";position:absolute;inset:0;z-index:1}
.card__link:hover{color:var(--accent)}
.cards--link .card__body::after{content:"اطلاعات بیشتر ←";display:block;margin-top:14px;color:var(--accent);font-weight:700;font-size:.9rem}
.lab__more{margin-top:24px}

/* ===== FAQ ===== */
.faq__list{max-width:860px;margin:0 auto;display:grid;gap:12px}
.faq__item{background:#fff;border-radius:var(--r);box-shadow:0 2px 10px rgba(16,20,26,.04);border-inline-start:3px solid transparent;transition:.2s}
.faq__item[open]{border-color:var(--accent)}
.faq__item summary{cursor:pointer;list-style:none;padding:18px 22px;font-weight:700;color:var(--head);display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:"+";font-size:1.5rem;line-height:1;color:var(--accent);transition:transform .2s;flex:none}
.faq__item[open] summary::after{transform:rotate(45deg)}
.faq__item p{padding:0 22px 20px;margin:0}

/* ===== Inner pages ===== */
.page-hero{position:relative;padding:90px 0 80px;background:var(--dark);color:#d6d9dd;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:var(--img) center/cover no-repeat;opacity:.35}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(270deg,rgba(14,16,20,.9),rgba(14,16,20,.55))}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{color:#fff;font-size:clamp(1.8rem,4vw,2.9rem);margin:.2em 0 .3em}
.page-hero p{max-width:680px;margin:0;font-size:1.05rem}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px;font-size:.88rem}
.crumbs li:not(:last-child)::after{content:"‹";margin-inline-start:6px;color:var(--accent)}
.crumbs a:hover{color:var(--accent)}
.crumbs [aria-current]{color:#fff}
.article{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:60px;align-items:start}
.prose h2{font-size:clamp(1.3rem,2.4vw,1.7rem);margin:1.8em 0 .6em}
.prose h2:first-child{margin-top:0}
.prose ul,.prose ol{padding-inline-start:1.3em;margin:0 0 1.2em}
.prose li{margin-bottom:.4em}
.prose li::marker{color:var(--accent);font-weight:700}
.prose strong{color:var(--head)}
.prose figure{margin:1.6em 0}
.prose figure img{border-radius:var(--r);width:100%;aspect-ratio:3/2;object-fit:cover;box-shadow:var(--shadow)}
.prose figcaption{font-size:.85rem;color:var(--muted);margin-top:8px}
.prose .spec{margin-bottom:1.2em}
.note{background:var(--bg-alt);border-inline-start:3px solid var(--accent);padding:16px 20px;border-radius:var(--r);font-size:.95rem}
.aside{position:sticky;top:110px;display:grid;gap:24px}
.aside__box{background:var(--bg-alt);border-radius:var(--r);padding:26px}
.aside__box h2{font-size:1.1rem;margin-bottom:.8em}
.svc-list{list-style:none;margin:0;padding:0}
.svc-list a{display:flex;justify-content:space-between;padding:10px 14px;margin-bottom:6px;background:#fff;border-radius:var(--r);font-weight:500;color:var(--head);transition:.2s}
.svc-list a::after{content:"←";color:var(--accent)}
.svc-list a:hover,.svc-list a[aria-current]{background:var(--accent);color:#fff}
.svc-list a:hover::after,.svc-list a[aria-current]::after{color:#fff}
.aside__cta{background:var(--dark-2);color:#c9cdd3}
.aside__cta h2{color:#fff}
.aside__cta .btn{width:100%;margin-top:10px}
.related{margin-top:70px}
@media (max-width:900px){
  .article{grid-template-columns:1fr;gap:40px}
  .aside{position:static}
  .page-hero{padding:60px 0 50px}
}

/* ===== Phone reveal ===== */
.phone{font:inherit;font-weight:700;color:var(--accent);background:none;border:1.5px solid var(--accent);border-radius:30px;padding:.3em 1.1em;cursor:pointer;transition:.2s}
.phone:hover{background:var(--accent);color:#fff}
.phone--plain{border:0;padding:0;color:inherit;font-weight:500;text-decoration:underline dotted;text-underline-offset:4px}
.phone--plain:hover{background:none;color:var(--accent)}
.phone-num{font-weight:700;direction:ltr;unicode-bidi:embed}
a.topbar__item:hover{color:var(--accent)}