@font-face{font-family:Vazirmatn;src:url(../fonts/vazirmatn-arabic-400-normal.woff2) format("woff2");font-weight:400;font-display:swap;unicode-range:U+0600-06FF,U+0750-077F,U+0870-088E,U+0890-0891,U+0898-08E1,U+08E3-08FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}
@font-face{font-family:Vazirmatn;src:url(../fonts/vazirmatn-arabic-700-normal.woff2) format("woff2");font-weight:700;font-display:swap;unicode-range:U+0600-06FF,U+0750-077F,U+0870-088E,U+0890-0891,U+0898-08E1,U+08E3-08FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}
@font-face{font-family:Vazirmatn;src:url(../fonts/vazirmatn-arabic-900-normal.woff2) format("woff2");font-weight:900;font-display:swap;unicode-range:U+0600-06FF,U+0750-077F,U+0870-088E,U+0890-0891,U+0898-08E1,U+08E3-08FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}
@font-face{font-family:Vazirmatn;src:url(../fonts/vazirmatn-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Vazirmatn;src:url(../fonts/vazirmatn-latin-700-normal.woff2) format("woff2");font-weight:700 900;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Inter;src:url(../fonts/inter-latin-400-normal.woff2) format("woff2");font-weight:400;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Inter;src:url(../fonts/inter-latin-600-normal.woff2) format("woff2");font-weight:600;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Inter;src:url(../fonts/inter-latin-800-normal.woff2) format("woff2");font-weight:800 900;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Inter;src:url(../fonts/inter-cyrillic-400-normal.woff2) format("woff2");font-weight:400;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:Inter;src:url(../fonts/inter-cyrillic-600-normal.woff2) format("woff2");font-weight:600;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:Inter;src:url(../fonts/inter-cyrillic-800-normal.woff2) format("woff2");font-weight:800 900;font-display:swap;unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
:root{--dark:#2a2829;--ink:#2f2c2d;--gray:#4f4c4d;--paper:#f5f2ed;--beige:#ebe5dc;--acc:#f68712;--acc2:#e3781a;--muted:#6d6869;--f:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
.lang-fa{--f:Vazirmatn,Tahoma,"Segoe UI",sans-serif}
*{box-sizing:border-box}
html,body{margin:0;height:100%;overflow:hidden}
body{font-family:var(--f);color:var(--ink);background:#1c1b1b;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
button{font:inherit;cursor:pointer}
a{color:inherit}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:99;background:#fff;padding:6px 10px}
.stage{position:fixed;inset:0;background:radial-gradient(1200px 700px at 50% 45%,#454142 0%,#2a2829 45%,#151414 100%);z-index:0}
.stage::after{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 50% 100%,rgba(246,135,18,.13),transparent 70%)}
/* top bar */
.top{position:fixed;top:0;left:0;right:0;height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;z-index:20;gap:12px;pointer-events:none}
.top>*{pointer-events:auto}
.langs{display:flex;gap:4px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-radius:999px;padding:4px;direction:ltr}
.lg{display:grid;place-items:center;min-width:38px;height:32px;border-radius:999px;color:#ddd;text-decoration:none;font:600 13px Inter,Vazirmatn,sans-serif}
.lg[data-lang=fa]{font-family:Vazirmatn,sans-serif}
.lg.on{background:#fff;color:var(--dark)}
.lg:hover:not(.on){background:rgba(255,255,255,.12)}
.tb{display:flex;gap:4px;padding:5px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 10px 30px rgba(0,0,0,.35);max-width:calc(100vw - 380px);overflow-x:auto;scrollbar-width:none}
.tb::-webkit-scrollbar{display:none}
.tb-b{flex:none;display:flex;align-items:center;gap:6px;height:38px;min-width:38px;padding:0 10px;border:0;border-radius:999px;background:transparent;color:#d9d5d2;transition:background .25s,color .25s}
.tb-b span{display:none;font-size:13px;white-space:nowrap}
.tb-b:hover{background:rgba(255,255,255,.12);color:#fff}
.tb-b.on{background:var(--acc);color:#fff}
.tb-b.on span{display:inline}
.ic{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.logo-card{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-radius:16px;padding:6px 14px 6px 6px;direction:ltr}
.logo-card img{width:42px;height:42px}
.logo-card b{display:block;font:800 14px Inter,sans-serif;letter-spacing:.04em}
.logo-card small{display:block;font-size:11px;color:#bdb7b3}
/* book */
.wrap{position:fixed;top:80px;bottom:84px;left:84px;right:84px;z-index:5;display:flex;align-items:center;justify-content:center}
.book{width:100%;height:100%;opacity:0;transition:opacity .6s,transform .7s cubic-bezier(.2,.7,.2,1)}
.ready .book{opacity:1}
.book.shift-l{transform:translateX(-25%)}
.book.shift-r{transform:translateX(25%)}
.stf__parent{filter:drop-shadow(0 30px 40px rgba(0,0,0,.55))}
.page{background:var(--paper);overflow:hidden}
.paper{position:relative;width:100%;height:100%;container-type:size;background:var(--paper) url(../img/paper.webp);overflow:hidden}
.page.left .paper::after,.page.right .paper::after{content:"";position:absolute;top:0;bottom:0;width:9%;pointer-events:none;z-index:9}
.page.left .paper::after{right:0;background:linear-gradient(to left,rgba(0,0,0,.22),rgba(0,0,0,.06) 35%,transparent)}
.page.right .paper::after{left:0;background:linear-gradient(to right,rgba(0,0,0,.22),rgba(0,0,0,.06) 35%,transparent)}
.page.left .paper::before,.page.right .paper::before{content:"";position:absolute;top:0;bottom:0;width:1.1%;z-index:8;pointer-events:none;background:repeating-linear-gradient(90deg,#e7e1d6 0 1px,#fbf8f2 1px 2px)}
.page.left .paper::before{left:0}.page.right .paper::before{right:0}
.page.hard .paper::before,.page.hard .paper::after{display:none}
/* page content */
.pc{position:absolute;inset:0;display:flex;flex-direction:column;padding:5.5cqw 7.5cqw 4.5cqw;font-size:2.75cqw;line-height:1.62}
.lang-fa .pc{line-height:1.85}
.page.left .pc{padding-left:9.5cqw}.page.right .pc{padding-right:9.5cqw}
.page.left .pc::before,.page.right .pc::before{content:"";position:absolute;top:0;bottom:0;width:2.6cqw;background:var(--acc)}
.page.left .pc::before{left:0}.page.right .pc::before{right:0}
.pc.full::before{display:none}
.ph{display:flex;align-items:center;justify-content:space-between;border-bottom:.25cqw solid var(--acc);padding-bottom:1.6cqw;margin-bottom:3.2cqw}
.ph-ch{font-size:2.1cqw;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--gray)}
.lang-fa .ph-ch{letter-spacing:0;font-weight:700}
.ph-logo{width:6.5cqw;height:6.5cqw}
.pb{flex:1;min-height:0;display:flex;flex-direction:column;gap:0}
.pf{display:flex;justify-content:space-between;align-items:center;font-size:2cqw;color:var(--muted);border-top:.15cqw solid #d9d2c6;padding-top:1.4cqw;margin-top:2cqw}
.pf-brand{font-family:Inter,sans-serif;letter-spacing:.12em;text-transform:uppercase;font-weight:600;direction:ltr}
.pf-n{display:grid;place-items:center;min-width:6cqw;height:6cqw;border-radius:50%;background:var(--gray);color:#fff;font-weight:700;font-size:2.3cqw}
.page.left .pf{flex-direction:row-reverse}
.lang-fa .page.left .pf{flex-direction:row}
.lang-fa .page.right .pf{flex-direction:row-reverse}
.kicker{margin:0 0 .8cqw;color:var(--acc);font-weight:700;font-size:2.3cqw;letter-spacing:.14em;text-transform:uppercase}
.lang-fa .kicker{letter-spacing:0}
h1{margin:0 0 2.6cqw;font-size:6.6cqw;line-height:1.12;font-weight:800;color:var(--dark);letter-spacing:-.01em}
.lang-fa h1{font-weight:900;line-height:1.35}
h1.h2{font-size:5cqw}
h1::after{content:"";display:block;width:12cqw;height:.9cqw;margin-top:1.8cqw;background:var(--acc);border-radius:1cqw}
h2{font-size:3.9cqw;line-height:1.25;margin:1.2cqw 0 1.6cqw;color:var(--dark);font-weight:800}
h3{font-size:3cqw;margin:0 0 1.2cqw;color:var(--dark);font-weight:800;line-height:1.3}
p{margin:0 0 2cqw;text-align:justify;hyphens:auto}
.lang-fa p{text-align:justify}
.lead{font-size:1.08em;color:#3a3536}
.small{font-size:2.3cqw;color:var(--muted)}
.dense{font-size:2.45cqw}
.xdense{font-size:2.25cqw}
.lang-ru .dense{font-size:2.35cqw}
.lang-ru .xdense{font-size:2.15cqw}
.bul{margin:0 0 2cqw;padding:0;list-style:none}
.bul li{position:relative;padding-inline-start:3.4cqw;margin-bottom:1cqw}
.bul li::before{content:"";position:absolute;inset-inline-start:0;top:.62em;width:1.5cqw;height:1.5cqw;border-radius:50%;background:var(--acc)}
.bul.tick li::before{border-radius:.3cqw;transform:rotate(45deg);width:1.3cqw;height:1.3cqw}
.bul.num{counter-reset:n}
.bul.num li{counter-increment:n;padding-inline-start:5.6cqw;margin-bottom:1.3cqw}
.bul.num li::before{content:counter(n);width:4cqw;height:4cqw;top:.05em;display:grid;place-items:center;color:#fff;font-weight:800;font-size:2.1cqw;background:var(--gray)}
.lang-fa .bul.num li::before{content:counter(n,persian)}
.bul.cols{columns:2;column-gap:4cqw}
.bul.cols li{break-inside:avoid}
img.r{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:1.6cqw;display:block;background:#ddd}
img.wide{aspect-ratio:21/9;margin:1cqw 0 2.4cqw}
.g2,.g3{display:grid;gap:2cqw;margin-top:auto}
.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:1fr 1fr 1fr}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:1.8cqw;margin:1cqw 0 2.6cqw}
.stat{background:var(--gray);color:#fff;border-radius:1.8cqw;padding:2.4cqw 2.6cqw}
.stat.o{background:var(--acc)}
.stat b{display:block;font-size:5.4cqw;line-height:1.1;font-weight:900;direction:ltr;text-align:start}
.lang-fa .stat b{direction:rtl}
.stat span{display:block;font-size:2.1cqw;opacity:.92;line-height:1.4;margin-top:.6cqw}
.stats.s2 .stat:first-child{background:var(--acc)}
.proj{background:var(--beige);border-radius:2cqw;padding:3cqw;margin-bottom:2.4cqw}
.proj .stats{margin:1.4cqw 0 2cqw}
.proj .stat b{font-size:4.4cqw}
.proj .bul{margin:0}
.card{background:var(--beige);border-radius:2cqw;padding:2.8cqw 3cqw;margin-top:1cqw}
.card .bul{margin:0}.card p{margin-bottom:1.4cqw}
.card.dark{background:var(--gray);color:#f1ede8}
.card.dark h3{color:#fff}
.grps{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6cqw;margin:0 0 2.4cqw}
.grp{background:var(--gray);color:#fff;border-radius:1.6cqw;padding:2cqw;text-align:center}
.grp b{display:grid;place-items:center;width:5.5cqw;height:5.5cqw;margin:0 auto 1cqw;border-radius:50%;background:var(--acc);font-size:2.8cqw}
.grp span{font-size:2.3cqw;line-height:1.35;display:block}
.split{display:grid;grid-template-columns:34% 1fr;gap:4cqw;min-height:0;flex:1}
img.tall{width:100%;height:100%;object-fit:cover;border-radius:1.6cqw;display:block;min-height:0}
.split+.g2{margin-top:2.4cqw}
.split+.g2 img.r{aspect-ratio:16/9}
.prod{display:grid;grid-template-columns:36% 1fr;gap:3.6cqw;margin-bottom:2.4cqw}
.prod-img{width:100%;height:100%;min-height:52cqw;max-height:70cqw;object-fit:cover;border-radius:1.6cqw;box-shadow:0 1.2cqw 3cqw rgba(0,0,0,.18)}
.spec{width:100%;border-collapse:collapse;margin:0 0 2.4cqw;font-size:.92em;border-radius:1.6cqw;overflow:hidden;background:#fff}
.spec th,.spec td{padding:1.4cqw 2cqw;text-align:start;vertical-align:top;border-bottom:.15cqw solid #ece6dc}
.spec th{width:38%;background:var(--gray);color:#fff;font-weight:700}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:0}
.mini{display:grid;grid-template-columns:30% 1fr;gap:3.4cqw;padding-bottom:2.6cqw;margin-bottom:2.6cqw;border-bottom:.2cqw dashed #d5ccbf}
.mini:last-child{border-bottom:0;margin-bottom:0}
.mini-img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:1.6cqw}
.mini h2{margin-top:0}
.mini .spec{margin-bottom:1.4cqw}
.toc{list-style:none;margin:0;padding:0;columns:1}
.toc li{margin:0}
.toc a{display:flex;align-items:baseline;gap:1.4cqw;text-decoration:none;padding:.75cqw 0;font-size:2.55cqw;color:var(--ink)}
.toc a i{flex:1;border-bottom:.3cqw dotted #c9c0b3}
.toc a b{min-width:4.6cqw;text-align:center;color:#fff;background:var(--acc);border-radius:1cqw;font-size:2.1cqw;padding:.2cqw .6cqw}
.toc a:hover span{color:var(--acc)}
.certs{display:grid;grid-template-columns:repeat(4,1fr);gap:2cqw}
.certs.tr{grid-template-columns:repeat(2,1fr)}
.certs figure{margin:0;background:#fff;border-radius:1.2cqw;padding:1cqw;box-shadow:0 .6cqw 1.8cqw rgba(0,0,0,.12)}
.certs img{width:100%;display:block;aspect-ratio:904/1280;object-fit:cover;border-radius:.6cqw}
.certs.tr img{aspect-ratio:878/620}
.certs figcaption{font:700 1.8cqw/1.3 Inter,sans-serif;text-align:center;margin-top:.8cqw;color:var(--gray)}
.certs.tr figcaption{font-size:1.7cqw}
/* full bleed */
.pc.full{padding:0}
img.bleed{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.bleed-cap{position:absolute;left:0;right:0;bottom:0;padding:16cqw 7cqw 6cqw;background:linear-gradient(transparent,rgba(20,19,19,.88));color:#fff;display:flex;align-items:center;gap:3cqw;font-size:4cqw;font-weight:800}
.bleed-cap img{width:12cqw;height:12cqw}
.panel{position:absolute;left:5cqw;right:5cqw;bottom:6cqw;background:rgba(42,40,41,.86);backdrop-filter:blur(4px);color:#fff;border-radius:2.4cqw;padding:4cqw;border-top:.8cqw solid var(--acc)}
.panel h2{color:#fff;margin-top:0}
.chips{display:flex;flex-wrap:wrap;gap:1.4cqw}
.chips span{border:.2cqw solid rgba(255,255,255,.35);border-radius:99cqw;padding:.8cqw 2.2cqw;font-size:2.3cqw}
/* cover/back */
.cv,.bk{position:absolute;inset:0;background:var(--dark);color:#fff;overflow:hidden}
.cv-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.cv-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(42,40,41,.9) 0%,rgba(42,40,41,.45) 45%,rgba(30,28,29,.95) 100%)}
.cv-stripe{position:absolute;width:160%;height:9cqw;left:-30%;top:72%;background:var(--acc);transform:rotate(-24deg);box-shadow:0 0 0 1.6cqw rgba(246,135,18,.25)}
.bk .cv-stripe{top:12%;transform:rotate(24deg)}
.cv-in{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;padding:13cqw 8cqw 0;text-align:center}
.cv-logo{width:46cqw;height:46cqw;margin-bottom:5cqw;filter:drop-shadow(0 2cqw 4cqw rgba(0,0,0,.5))}
.cv-k{margin:0 0 1cqw;color:var(--acc);font-weight:700;letter-spacing:.2em;text-transform:uppercase;font-size:2.6cqw;text-align:center}
.lang-fa .cv-k{letter-spacing:0;font-size:3.2cqw}
.cv-h{font:900 9.4cqw/1 Inter,sans-serif;letter-spacing:.02em;margin:0;color:#fff}
.cv-h::after{display:none}
.cv-t{font-size:3.6cqw;margin:2cqw 0 0;color:#e8e2dc;text-align:center}
.cv-c{margin-top:auto;margin-bottom:0;position:absolute;bottom:12cqw;left:0;right:0;text-align:center;font-size:2.8cqw;color:#cfc8c2}
.cv-e{position:absolute;bottom:4cqw;left:6cqw;right:6cqw;text-align:center;font-size:2cqw;color:#a39c97;margin:0}
.bk{background:var(--gray)}
.bk-in{position:absolute;inset:0;padding:22cqw 8cqw 8cqw;display:flex;flex-direction:column}
.bk-logo{width:22cqw;height:22cqw;margin-bottom:3cqw}
.bk h2{color:#fff;font-size:6cqw;margin:0 0 .6cqw}
.bk-t{color:var(--acc);font:700 2.8cqw Inter,sans-serif;margin-bottom:4cqw;text-align:start}
.contact{list-style:none;margin:0;padding:0}
.bk .contact{font-size:2.8cqw}
.contact li{display:flex;align-items:flex-start;gap:2.4cqw;padding:1.3cqw 0;border-bottom:.15cqw solid rgba(255,255,255,.14)}
.contact li .ic{width:1.3em;height:1.3em;color:var(--acc);margin-top:.15em}
.contact a,.contact span{text-decoration:none;color:#fff;font-family:Inter,sans-serif;unicode-bidi:isolate}
.contact a:hover{color:var(--acc)}
/* arrows */
.arrow{position:fixed;top:50%;z-index:15;width:54px;height:54px;margin-top:-27px;border-radius:50%;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:#fff;display:grid;place-items:center;transition:background .2s,transform .2s}
.arrow:hover{background:var(--acc);transform:scale(1.06)}
.arrow .ic{width:24px;height:24px}
.a-left{left:18px}.a-right{right:18px}
.a-right .ic{transform:scaleX(-1)}
/* bottom */
.bottom{position:fixed;left:0;right:0;bottom:0;z-index:20;padding:0 18px 14px}
.prog{height:4px;background:rgba(255,255,255,.12);border-radius:4px;overflow:hidden;margin:0 0 12px}
.prog-bar{display:block;height:100%;width:0;background:var(--acc);transition:width .5s;border-radius:4px}
.bt-row{display:flex;align-items:center;justify-content:space-between;gap:12px;color:#d6d0cb;font-size:14px}
.counter{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:999px;padding:8px 16px;white-space:nowrap}
.cur-ch{flex:1;text-align:center;color:#a8a19c;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cta{display:flex;align-items:center;gap:8px;border:0;border-radius:999px;background:var(--acc);color:#fff;padding:11px 20px;font-weight:700;box-shadow:0 8px 24px rgba(246,135,18,.35);transition:transform .2s,background .2s}
.cta:hover{background:var(--acc2);transform:translateY(-1px)}
/* modal */
.modal{position:fixed;inset:0;z-index:50;background:rgba(10,10,10,.6);backdrop-filter:blur(6px);display:grid;place-items:center;padding:16px}
.modal[hidden]{display:none}
.modal-card{position:relative;width:min(460px,100%);max-height:90vh;overflow:auto;background:var(--dark);color:#fff;border-radius:22px;padding:28px;border-top:5px solid var(--acc);box-shadow:0 30px 80px rgba(0,0,0,.5)}
.m-logo{width:64px;height:64px}
.modal h2{color:#fff;margin:8px 0 10px;font-size:22px}
.modal .contact{font-size:15px}
.modal .contact li{padding:10px 0}
.m-x{position:absolute;top:14px;inset-inline-end:14px;width:36px;height:36px;border-radius:50%;border:0;background:rgba(255,255,255,.1);color:#fff;display:grid;place-items:center}
.nos{position:fixed;bottom:0;left:0;right:0;color:#fff;text-align:center;z-index:60}
:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
@media (max-width:1100px){.logo-card span{display:none}.logo-card{padding:6px}.tb{max-width:calc(100vw - 230px)}}
@media (max-width:760px){
 .top{height:auto;flex-wrap:wrap;padding:8px 10px 0;gap:8px}
 .tb{order:3;max-width:100%;width:100%;justify-content:flex-start}
 .tb-b{height:34px;min-width:34px;padding:0 8px}
 .logo-card img{width:34px;height:34px}
 .lg{min-width:34px;height:30px}
 .wrap{top:104px;bottom:96px;left:8px;right:8px}
 .arrow{top:auto;bottom:62px;margin:0;width:42px;height:42px}
 .a-left{left:10px}.a-right{right:10px}
 .bottom{padding:0 10px 10px}
 .bt-row{font-size:12px}.cur-ch{display:none}
 .counter{padding:7px 12px;margin-inline-start:48px}
 .cta{padding:10px 14px;margin-inline-end:48px}
 .cta span{font-size:13px}
}
@media (max-width:420px){.cta span{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}
@media (prefers-reduced-motion:reduce){.book,.prog-bar{transition:none}}
/* density tuning */
.pc{font-size:2.6cqw;padding:5cqw 7cqw 4cqw}
.dense{font-size:2.36cqw}
.lang-ru .pc{font-size:2.45cqw}
.lang-ru .dense{font-size:2.2cqw}
.lang-fa .dense{line-height:1.78}
h1{font-size:6cqw;margin-bottom:2.2cqw}
h1.h2{font-size:4.6cqw}
h1::after{margin-top:1.4cqw;height:.8cqw}
.ph{margin-bottom:2.6cqw}
.toc a{padding:.42cqw 0;font-size:2.4cqw}
.toc a b{font-size:2cqw}
.g2.top{margin:0 0 2.4cqw}
.g2.top img.r{aspect-ratio:16/10}
.prod{grid-template-columns:30% 1fr;gap:3.2cqw;margin-bottom:2cqw}
.prod-img{min-height:0;max-height:none;height:100%;aspect-ratio:auto}
.prod p{margin-bottom:0}
.mini{grid-template-columns:26% 1fr;gap:3cqw;padding-bottom:0;margin-bottom:1.6cqw;border:0}
.mini-img{aspect-ratio:1/1}
.mini+.spec{margin-bottom:1.4cqw}
.bul.inl{display:flex;flex-wrap:wrap;gap:.6cqw 3cqw}
.bul.inl li{margin:0}
.mini ~ .spec + .bul, .mini ~ .spec{ }
.pb > .spec:not(:last-child){margin-bottom:1.6cqw}
.panel .bul li{margin-bottom:.9cqw}
.panel{font-size:2.5cqw;line-height:1.55}
.lang-fa .panel{line-height:1.8}
.certs.tr{grid-template-columns:repeat(3,1fr);gap:1.6cqw}
.certs.tr figcaption{font-size:1.5cqw}
.stat{padding:2cqw 2.4cqw}
.stat b{font-size:4.8cqw}
.proj{padding:2.4cqw 2.8cqw;margin-bottom:2cqw}
.proj .bul li{margin-bottom:.5cqw}
.bul li{margin-bottom:.8cqw}
img.wide{aspect-ratio:5/2;margin:.6cqw 0 2cqw}
.split{gap:3.4cqw}
.prod-img{contain:size;align-self:stretch;height:auto;min-height:40cqw}
.pb>.g2:last-child img.r{aspect-ratio:16/9}
.lang-fa .toc a{padding:.2cqw 0}
.lang-ru .dense{font-size:2.1cqw}
.lang-ru .pc:not(.dense) p{font-size:.97em}
.bul.cols{column-gap:3cqw}
img.end{margin-top:auto;margin-bottom:0}
.lang-fa .toc a{font-size:2.3cqw}
.pb>.g3:last-child img.r{aspect-ratio:16/10}
.lang-ru .stats{margin-bottom:2cqw}
.xdense{font-size:2.2cqw}
.lang-ru .xdense{font-size:2.05cqw}
.lang-ru .dense{line-height:1.55}
.toc a{padding:.3cqw 0}
.lang-fa .toc a{padding:.1cqw 0;line-height:1.7}
.pb>.g2:last-child img.r{aspect-ratio:2/1}
.book,.wrap{direction:ltr}
.lang-fa .paper,.lang-fa .modal-card{direction:rtl}
.skip{position:absolute;left:auto;top:0;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.skip:focus{width:auto;height:auto;clip-path:none;inset-inline-start:12px;top:12px}
.cv p,.cv-in p{text-align:center!important}
.bk p{text-align:start}
.bk .cv-stripe{top:94%;transform:rotate(-14deg)}
@media (max-width:760px){
 .arrow{top:50%;bottom:auto;margin-top:-19px;width:38px;height:38px;background:rgba(42,40,41,.55)}
 .a-left{left:4px}.a-right{right:4px}
 .counter{margin-inline-start:0}.cta{margin-inline-end:0}
 .wrap{bottom:78px}
}
@media (max-width:420px){.cta span{max-width:none;overflow:visible}.cta{padding:10px 14px}.counter{padding:7px 10px}}