@counter-style b2-sheet{system:extends persian;pad:2 "۰"}.landing-behrokh2{--b2-paper:#f2ece2;--b2-paper-2:#e8dfd1;--b2-card:#f8f4ee;--b2-ink:#1f1813;--b2-ink-2:#4d4037;--b2-ink-3:#786a5e;--b2-brick:var(--site-accent-text,#a54d28);--b2-rule:#1f181329;--b2-rule-2:#1f181312;--b2-grid-a:#503c280b;--b2-grid-b:#503c2813;--b2-shadow:0 30px 60px -30px #321e0f59;--b2-display:Estedad, var(--site-font-family,Vazirmatn), Tahoma, sans-serif;--b2-gutter:clamp(16px, 4vw, 56px);--b2-ease:cubic-bezier(.2, .7, .1, 1);--paper:var(--b2-paper);--ink:var(--b2-ink);--muted:var(--b2-ink-3);--line:var(--b2-rule);--surface:var(--b2-paper-2);--button:var(--b2-ink);--on-button:var(--b2-paper);background-color:var(--b2-paper);background-image:linear-gradient(var(--b2-grid-b) 1px, transparent 1px), linear-gradient(90deg, var(--b2-grid-b) 1px, transparent 1px), linear-gradient(var(--b2-grid-a) 1px, transparent 1px), linear-gradient(90deg, var(--b2-grid-a) 1px, transparent 1px);color:var(--b2-ink);transition:background-color .6s var(--b2-ease), color .6s var(--b2-ease);background-size:120px 120px,120px 120px,24px 24px,24px 24px}.landing-behrokh2[data-b2-theme=night]{--b2-paper:#10243a;--b2-paper-2:#16304c;--b2-card:#132b45;--b2-ink:#e6edf5;--b2-ink-2:#b5c5d6;--b2-ink-3:#8ea4ba;--b2-brick:var(--site-accent-on-dark,#ef9a6b);--b2-rule:#e6edf533;--b2-rule-2:#e6edf514;--b2-grid-a:#a0c8f00f;--b2-grid-b:#a0c8f01c;--b2-shadow:0 30px 60px -30px #0009;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}.landing-behrokh2 :is(h1,h2,h3){font-family:var(--b2-display);letter-spacing:normal;overflow-wrap:anywhere}.landing-behrokh2 :is(a,button,summary,input,select,textarea):focus-visible{outline:2px solid var(--b2-brick);outline-offset:3px}.landing-behrokh2 main{counter-reset:b2-sheet}.landing-behrokh2 [data-b2-sheet]{counter-increment:b2-sheet}.landing-behrokh2 .b2-wrap{width:min(1360px, 100% - 2 * var(--b2-gutter));margin-inline:auto}.landing-behrokh2 .b2-armed [data-b2-reveal],.landing-behrokh2 .b2-armed[data-b2-reveal]{opacity:0;transition:opacity 1s var(--b2-ease), transform 1s var(--b2-ease);transform:translateY(28px)}.landing-behrokh2 .b2-armed .b2-in[data-b2-reveal]{opacity:1;transform:none}.landing-behrokh2 .landing-nav{z-index:30;max-width:none;min-height:72px;padding:12px var(--b2-gutter);background:color-mix(in srgb, var(--b2-paper) 86%, transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--b2-rule);gap:24px;transition:background-color .4s,box-shadow .4s;position:sticky;top:0}.landing-behrokh2.embedded .landing-nav{position:relative}.landing-behrokh2 .landing-logo{gap:12px;margin-inline-end:auto}.landing-behrokh2 .behrokh-brand-mark{width:34px;height:42px}.landing-behrokh2 .landing-brand-image{object-fit:contain;width:42px;height:46px}.landing-behrokh2 .identity-brand-name{font:700 18px/1.25 var(--b2-display);display:grid}.landing-behrokh2 .identity-brand-name small{font:400 11.5px/1.5 var(--site-font-family,Vazirmatn);color:var(--b2-ink-3)}.landing-behrokh2 .landing-links{gap:26px;font-size:14px}.landing-behrokh2 .landing-nav-cta{background:var(--b2-ink);color:var(--b2-paper);border:0;border-radius:2px;gap:10px;padding-inline:20px;font-size:14px;font-weight:500}.landing-behrokh2 .landing-nav-cta:hover{background:var(--b2-brick);color:#fff}.landing-behrokh2 .landing-menu{color:var(--b2-ink);border-color:var(--b2-rule);border-radius:2px}.landing-behrokh2 .b2-theme{border:1px solid var(--b2-rule);min-height:40px;color:inherit;font:inherit;cursor:pointer;white-space:nowrap;background:0 0;border-radius:99px;align-items:center;gap:8px;padding:4px 14px;font-size:13px;display:inline-flex}.landing-behrokh2 .b2-theme i{background:var(--b2-brick);width:14px;height:14px;box-shadow:inset -5px -2px 0 0 var(--b2-paper);transition:box-shadow .5s var(--b2-ease);border-radius:50%}.landing-behrokh2[data-b2-theme=night] .b2-theme i{box-shadow:none;background:#9cc3e8}.landing-behrokh2 .preview-banner{background:var(--b2-ink);color:var(--b2-paper)}.landing-behrokh2 .landing-page-intro{padding:18px var(--b2-gutter) 0;max-width:none}.landing-behrokh2 .landing-breadcrumb{color:var(--b2-ink-3);font-size:12px}.landing-behrokh2 .b2-btn{background:var(--b2-ink);min-height:46px;color:var(--b2-paper);font:500 14.5px/1.4 var(--site-font-family,Vazirmatn);cursor:pointer;isolation:isolate;border:0;border-radius:2px;align-items:center;gap:10px;padding:11px 22px;text-decoration:none;display:inline-flex;position:relative;overflow:hidden}.landing-behrokh2 .b2-btn:before{content:"";z-index:-1;background:var(--b2-brick);transition:transform .5s var(--b2-ease);position:absolute;inset:0;transform:translateY(101%)}.landing-behrokh2 .b2-btn:hover:before{transform:none}.landing-behrokh2 .b2-btn:hover{color:#fff}.landing-behrokh2 .b2-textlink{border-bottom:1px solid var(--b2-rule);align-items:center;gap:8px;min-height:44px;font-size:14.5px;transition:border-color .3s,color .3s;display:inline-flex}.landing-behrokh2 .b2-textlink:hover{border-color:var(--b2-ink);color:var(--b2-brick)}.landing-behrokh2 .b2-head{border-bottom:1px solid var(--b2-ink);grid-template-columns:170px minmax(0,1fr) minmax(0,34ch);align-items:end;gap:24px;padding-block:120px 40px;display:grid}.landing-behrokh2 .b2-sheet-no{color:var(--b2-ink-3);flex-direction:column;align-self:start;gap:10px;padding-top:14px;font-size:12.5px;display:flex}.landing-behrokh2 .b2-sheet-no b{font:800 44px/1 var(--b2-display);color:var(--b2-brick)}.landing-behrokh2 .b2-sheet-no b:before{content:counter(b2-sheet, b2-sheet)}.landing-behrokh2 .b2-head h2{font:800 clamp(38px, 6vw, 88px)/1.05 var(--b2-display);letter-spacing:-.03em}.landing-behrokh2 .b2-head h2 span{display:block}.landing-behrokh2 .b2-head p{color:var(--b2-ink-2);font-size:15px;line-height:2}.landing-behrokh2 .b2-hero{max-width:1560px;min-height:calc(100svh - 72px);padding:40px var(--b2-gutter) 64px;grid-template-columns:minmax(0,5fr) minmax(0,7fr);align-items:center;gap:clamp(28px,4vw,64px);margin-inline:auto;display:grid}.landing-behrokh2 .b2-hero.b2-hero-inner{min-height:0;padding-top:30px}.landing-behrokh2 .b2-hero.b2-hero-plain{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}.landing-behrokh2 .b2-eyebrow{color:var(--b2-ink-2);align-items:center;gap:12px;margin-bottom:26px;font-size:13px;display:flex}.landing-behrokh2 .b2-eyebrow:before{content:"";background:var(--b2-brick);width:34px;height:1px}.landing-behrokh2 .b2-hero h1{letter-spacing:-.045em;font-size:clamp(60px,8.2vw,148px);font-weight:850;line-height:.96}.landing-behrokh2 .b2-hero h1>span{white-space:nowrap;animation:b2-ink 1.6s var(--b2-ease) both;display:block}.landing-behrokh2 .b2-hero h1>span+span{color:var(--b2-brick);animation-delay:.18s}.landing-behrokh2 .b2-hero h1.b2-inner-title{font-size:clamp(40px,5.4vw,92px);line-height:1.08}.landing-behrokh2 .b2-hero h1.b2-inner-title>span{white-space:normal}@keyframes b2-ink{0%{opacity:0;letter-spacing:.02em;font-weight:120;transform:translateY(.18em)}60%{opacity:1}}@keyframes b2-rise{0%{opacity:0;transform:translateY(16px)}}.landing-behrokh2 .b2-lede{max-width:40ch;color:var(--b2-ink-2);animation:b2-rise 1.2s .5s var(--b2-ease) both;margin:30px 0 32px;font-size:clamp(16px,1.3vw,19px);line-height:2}.landing-behrokh2 .b2-actions{animation:b2-rise 1.2s .65s var(--b2-ease) both;flex-wrap:wrap;align-items:center;gap:22px;display:flex}.landing-behrokh2 .b2-triad{border-top:1px solid var(--b2-rule);animation:b2-rise 1.2s .8s var(--b2-ease) both;margin:48px 0 0;padding:0;list-style:none;display:flex}.landing-behrokh2 .b2-triad li{color:var(--b2-ink-3);flex:1;padding-top:14px;font-size:13px}.landing-behrokh2 .b2-triad li b{font:700 17px/1.4 var(--b2-display);color:var(--b2-ink);display:block}.landing-behrokh2 .b2-triad li+li{border-inline-start:1px solid var(--b2-rule);padding-inline-start:18px}.landing-behrokh2 .b2-empty-sheet{aspect-ratio:4/3;border:1px solid var(--b2-rule);background:var(--b2-card);place-items:center;display:grid}.landing-behrokh2 .b2-empty-sheet svg{width:70%}.landing-behrokh2 .b2-empty-sheet path{fill:none;stroke:var(--b2-ink);stroke-width:1.3px;stroke-dasharray:1400;stroke-dashoffset:1400px;animation:b2-draw 3s .4s var(--b2-ease) forwards}.landing-behrokh2 .b2-empty-sheet .b2-acc{stroke:var(--b2-brick);stroke-width:2px}@keyframes b2-draw{to{stroke-dashoffset:0}}.landing-behrokh2 .b2-frame{-webkit-user-select:none;user-select:none;margin:0;position:relative}.landing-behrokh2 .b2-frame-hero{animation:b2-rise 1.4s .3s var(--b2-ease) both;padding-top:30px}.landing-behrokh2 .b2-frame-media{aspect-ratio:4/3;background:var(--b2-paper-2);box-shadow:var(--b2-shadow);cursor:ew-resize;touch-action:pan-y;position:relative;overflow:hidden}.landing-behrokh2 .b2-frame-media>img{object-fit:cover;pointer-events:none;width:100%;height:100%;position:absolute;inset:0}.landing-behrokh2 .b2-frame-media .b2-is-line{clip-path:inset(0 0 0 calc(100% - var(--b2-line) * 1%))}.landing-behrokh2[data-b2-theme=night] .b2-frame-media .b2-is-line{filter:invert(.88)hue-rotate(180deg)saturate(1.4)brightness(.95)}.landing-behrokh2 .b2-filter-defs{position:absolute}.landing-behrokh2 .b2-divider{top:0;bottom:0;left:calc(100% - var(--b2-line) * 1%);pointer-events:none;width:0;position:absolute}.landing-behrokh2 .b2-divider:before{content:"";background:var(--b2-paper);box-shadow:0 0 0 .5px var(--b2-ink);position:absolute;inset:0 -.5px}.landing-behrokh2 .b2-divider span{background:var(--b2-paper);border:1px solid var(--b2-ink);width:52px;height:52px;transition:transform .3s var(--b2-ease);border-radius:50%;place-items:center;margin:-26px 0 0 -26px;display:grid;position:absolute;top:50%;left:0}.landing-behrokh2 .b2-frame:hover .b2-divider span{transform:scale(1.08)}.landing-behrokh2 .b2-frame-range{opacity:0;cursor:ew-resize;touch-action:pan-y;width:100%;height:100%;margin:0;position:absolute;inset:0}.landing-behrokh2 .b2-frame:has(.b2-frame-range:focus-visible) .b2-frame-media{outline:2px solid var(--b2-brick);outline-offset:4px}.landing-behrokh2 .b2-tag{z-index:2;border:1px solid var(--b2-ink);background:var(--b2-paper);pointer-events:none;padding:2px 10px;font-size:12px;position:absolute;top:14px}.landing-behrokh2 .b2-tag-line{right:14px}.landing-behrokh2 .b2-tag-space{background:var(--b2-ink);color:var(--b2-paper);left:14px}.landing-behrokh2 .b2-dims{height:22px;color:var(--b2-ink-3);pointer-events:none;align-items:center;font-size:11.5px;display:flex;position:absolute;inset:0 0 auto}.landing-behrokh2 .b2-dims:before,.landing-behrokh2 .b2-dims:after{content:"";background:currentColor;flex:1;height:1px}.landing-behrokh2 .b2-dims span{white-space:nowrap;padding-inline:10px}.landing-behrokh2 .b2-dims i{background:currentColor;width:1px;height:12px;position:absolute;top:5px}.landing-behrokh2 .b2-dims i:first-child{right:0}.landing-behrokh2 .b2-dims i:last-of-type{left:0}.landing-behrokh2 .b2-frame-sheet .b2-dims,.landing-behrokh2 .b2-frame-still .b2-dims{order:-1;margin-bottom:8px;position:relative}.landing-behrokh2 .b2-frame-sheet,.landing-behrokh2 .b2-frame-still{flex-direction:column;display:flex}.landing-behrokh2 .b2-frame figcaption{color:var(--b2-ink-3);justify-content:space-between;gap:18px;padding-top:14px;font-size:13px;display:flex}.landing-behrokh2 .b2-frame figcaption b{color:var(--b2-ink);font-weight:600}.landing-behrokh2 .b2-hint{align-items:center;gap:8px;display:inline-flex}.landing-behrokh2 .b2-hint svg{width:18px;height:18px;animation:2.2s ease-in-out infinite b2-nudge}@keyframes b2-nudge{50%{transform:translate(-5px)}}.landing-behrokh2 .b2-reg{margin:0;padding:0;list-style:none}.landing-behrokh2 :is(.b2-reg-head,.b2-reg-row){grid-template-columns:90px minmax(0,1fr) 190px 56px;align-items:center;gap:18px;display:grid}.landing-behrokh2 .b2-reg-head{border-bottom:1px solid var(--b2-rule);color:var(--b2-ink-3);padding:14px 0;font-size:12px}.landing-behrokh2 .b2-reg-row{border:0;border-bottom:1px solid var(--b2-rule);width:100%;color:inherit;font:inherit;text-align:right;cursor:pointer;isolation:isolate;background:0 0;padding:30px 0;text-decoration:none;position:relative;overflow:hidden}.landing-behrokh2 .b2-reg-row:before{content:"";z-index:-1;background:var(--b2-paper-2);transform-origin:bottom;transition:transform .55s var(--b2-ease);position:absolute;inset:0;transform:scaleY(0)}.landing-behrokh2 .b2-reg-row:is(:hover,:focus-visible):before{transform:none}.landing-behrokh2 .b2-reg-thumb{display:none}.landing-behrokh2 .b2-reg-no{font:800 15px/1 var(--b2-display);color:var(--b2-brick);padding-inline-start:6px}.landing-behrokh2 .b2-reg-name{font:750 clamp(24px, 3vw, 44px)/1.2 var(--b2-display);letter-spacing:-.02em;transition:transform .55s var(--b2-ease)}.landing-behrokh2 .b2-reg-row:hover .b2-reg-name{transform:translate(-14px)}.landing-behrokh2 .b2-reg-use{color:var(--b2-ink-2);font-size:14px}.landing-behrokh2 .b2-reg-arrow{border:1px solid var(--b2-rule);width:44px;height:44px;transition:background .4s, color .4s, transform .5s var(--b2-ease);border-radius:50%;justify-self:end;place-items:center;display:grid}.landing-behrokh2 .b2-reg-row:hover .b2-reg-arrow{background:var(--b2-ink);color:var(--b2-paper);transform:rotate(-45deg)}.landing-behrokh2 .b2-reg-empty .b2-reg-name{color:#0000;-webkit-text-stroke:1px var(--b2-ink-3)}.landing-behrokh2 .b2-reg-empty:hover .b2-reg-name{color:var(--b2-brick);-webkit-text-stroke-color:var(--b2-brick)}.landing-behrokh2 .b2-placeholder{color:var(--b2-ink-3);padding:22px 0}.landing-behrokh2 .b2-reg-foot{justify-content:flex-end;padding-top:18px;display:flex}.landing-behrokh2 .b2-peek{z-index:25;aspect-ratio:4/3;pointer-events:none;clip-path:inset(50%);width:340px;transition:clip-path .55s var(--b2-ease);box-shadow:var(--b2-shadow);background:var(--b2-paper-2);position:fixed;top:0;left:0;overflow:hidden}.landing-behrokh2 .b2-peek.b2-on{clip-path:inset(0)}.landing-behrokh2 .b2-peek img{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.landing-behrokh2 .b2-peek .b2-is-line{animation:b2-wipe 1.1s .15s var(--b2-ease) forwards}@keyframes b2-wipe{to{clip-path:inset(0 100% 0 0)}}.landing-behrokh2 .b2-sheet-dialog{border:1px solid var(--b2-ink);background:var(--b2-paper);width:min(1180px,100% - 32px);max-height:calc(100svh - 32px);color:var(--b2-ink);padding:0;overflow:auto;box-shadow:0 40px 120px #00000059}.landing-behrokh2 .b2-sheet-dialog::backdrop{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#140e0a8c}.landing-behrokh2 .b2-sheet-grid{grid-template-columns:minmax(0,7fr) minmax(0,4fr);display:grid;position:relative}.landing-behrokh2 .b2-sheet-grid>.b2-frame,.landing-behrokh2 .b2-sheet-grid>.b2-empty-sheet{margin:40px}.landing-behrokh2 .b2-sheet-side{border-right:1px solid var(--b2-rule);flex-direction:column;gap:16px;padding:44px 34px 34px;display:flex}.landing-behrokh2 .b2-sheet-label{font:800 18px/1 var(--b2-display);color:var(--b2-brick)}.landing-behrokh2 .b2-sheet-side h3{font:800 clamp(28px, 3vw, 40px)/1.2 var(--b2-display);letter-spacing:-.02em}.landing-behrokh2 .b2-sheet-side p{color:var(--b2-ink-2);font-size:15px}.landing-behrokh2 .b2-sheet-meta{border:1px solid var(--b2-ink);grid-template-columns:auto 1fr;margin:auto 0 0;font-size:13px;display:grid}.landing-behrokh2 .b2-sheet-meta :is(dt,dd){margin:0;padding:8px 12px}.landing-behrokh2 .b2-sheet-meta dt{color:var(--b2-ink-3);border-left:1px solid var(--b2-rule)}.landing-behrokh2 .b2-sheet-links{flex-wrap:wrap;gap:6px 20px;display:flex}.landing-behrokh2 .b2-sheet-close{z-index:3;border:1px solid var(--b2-ink);background:var(--b2-paper);width:40px;height:40px;color:var(--b2-ink);cursor:pointer;border-radius:50%;place-items:center;display:grid;position:absolute;top:12px;left:12px}.landing-behrokh2 .b2-desk-grid{grid-template-columns:minmax(0,5fr) minmax(0,6fr);align-items:start;gap:clamp(36px,6vw,110px);padding-block:120px 40px;display:grid}.landing-behrokh2 .b2-desk-plain .b2-desk-grid{grid-template-columns:minmax(0,1fr);max-width:900px;margin-inline:auto}.landing-behrokh2 .b2-desk-photo{margin:0 0 60px;position:relative}.landing-behrokh2 .b2-desk-photo>img{aspect-ratio:4/5;object-fit:cover;object-position:50% 30%;width:100%;box-shadow:var(--b2-shadow)}.landing-behrokh2 .b2-scribble{pointer-events:none;width:100%;height:100%;position:absolute;inset:0;overflow:visible}.landing-behrokh2 .b2-scribble path{fill:none;stroke:var(--b2-brick);stroke-width:2.2px;stroke-linecap:round;stroke-dasharray:900;stroke-dashoffset:900px;transition:stroke-dashoffset 2.2s .4s 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