:root{--berke-color-primary-950:#0f2439;--berke-color-primary-900:#132c46;--berke-color-primary-800:#182d4c;--berke-color-primary-700:#223d65;--berke-color-primary-600:#2f6e95;--berke-color-primary-500:#4bb8dd;--berke-color-sky-100:#eef8fb;--berke-color-sky-200:#dceff6;--berke-color-aqua-100:#f2f7fa;--berke-color-aqua-200:#e5eef3;--berke-color-indigo-100:#f1f4f8;--berke-color-indigo-200:#e2e8f0;--berke-color-accent-500:#4bb8dd;--berke-color-text:#173f55;--berke-color-heading:#0f2439;--berke-color-muted:#506b7d;--berke-color-border:#dbe6ec;--berke-color-border-strong:#bfd5df;--berke-color-surface:#f7fafc;--berke-color-surface-blue:#eef8fb;--berke-color-surface-elevated:#ffffff;--berke-color-white:#ffffff;--berke-icon-aqua:#167f9f;--berke-icon-aqua-bg:#eaf7fb;--berke-icon-aqua-border:rgba(22, 127, 159, .22);--berke-icon-teal:#23756f;--berke-icon-teal-bg:#edf8f6;--berke-icon-teal-border:rgba(35, 117, 111, .22);--berke-icon-green:#39785a;--berke-icon-green-bg:#eef7f1;--berke-icon-green-border:rgba(57, 120, 90, .22);--berke-icon-amber:#a86a16;--berke-icon-amber-bg:#fff6e8;--berke-icon-amber-border:rgba(168, 106, 22, .24);--berke-icon-navy:#355678;--berke-icon-navy-bg:#eef3f8;--berke-icon-navy-border:rgba(53, 86, 120, .20);--berke-icon-glyph-nav:1.125rem;--berke-icon-glyph-action:1.25rem;--berke-icon-glyph-footer:1.25rem;--berke-icon-glyph-section:1.625rem;--berke-icon-glyph-feature:1.875rem;--berke-icon-stroke:1.8;--berke-icon-stroke-compact:1.7;--berke-icon-surface-nav:2rem;--berke-icon-surface-action:2.75rem;--berke-icon-surface-footer:2.5rem;--berke-font-family:"IRANYekanX", Tahoma, Arial, sans-serif;--berke-font-weight-regular:400;--berke-font-weight-medium:500;--berke-font-weight-semibold:600;--berke-font-weight-bold:700;--berke-font-weight-extrabold:800;--berke-type-display:clamp(2.3rem, 3vw, 3rem);--berke-type-h1:clamp(2.08rem, 2.55vw, 2.82rem);--berke-type-h2:clamp(1.46rem, 1.62vw, 1.84rem);--berke-type-h3:clamp(1.07rem, 1.05vw, 1.22rem);--berke-type-h4:1.05rem;--berke-type-lead:clamp(1rem, .985rem + .1vw, 1.08rem);--berke-type-body:clamp(.98rem, .97rem + .07vw, 1.035rem);--berke-type-card:.95rem;--berke-type-control:.94rem;--berke-type-small:.91rem;--berke-type-caption:.88rem;--berke-type-micro:.84rem;--berke-leading-display:1.46;--berke-leading-heading:1.58;--berke-leading-body:1.9;--berke-leading-compact:1.72;--berke-leading-support:1.88;--berke-copy-gap:.66rem;--berke-card-copy-gap:.46rem;--berke-color-on-dark:#ffffff;--berke-color-on-dark-muted:rgba(255, 255, 255, .82);--berke-font-size-base:var(--berke-type-body);--berke-line-height-base:var(--berke-leading-body);--berke-text-xs:var(--berke-type-micro);--berke-text-sm:var(--berke-type-small);--berke-text-base:var(--berke-type-body);--berke-text-lg:var(--berke-type-lead);--berke-text-xl:var(--berke-type-h4);--berke-text-2xl:var(--berke-type-h3);--berke-text-3xl:var(--berke-type-h2);--berke-text-4xl:var(--berke-type-h1);--berke-leading-tight:var(--berke-leading-display);--berke-container:82rem;--berke-container-narrow:64rem;--berke-container-wide:88rem;--berke-content-measure:44rem;--berke-content-measure-wide:46rem;--berke-gutter:clamp(1rem, 3.25vw, 2rem);--berke-space-1:.375rem;--berke-space-2:.5rem;--berke-space-3:.75rem;--berke-space-4:1rem;--berke-space-5:1.5rem;--berke-space-6:2rem;--berke-space-7:3rem;--berke-space-8:4rem;--berke-space-9:6rem;--berke-space-10:8rem;--berke-section-space:clamp(2.7rem, 4.35vw, 4.15rem);--berke-section-space-compact:clamp(2rem, 3.1vw, 2.85rem);--berke-section-head-gap:clamp(1.1rem, 1.75vw, 1.55rem);--berke-split-gap:clamp(1.35rem, 2.6vw, 2.6rem);--berke-hero-pad-start:clamp(2.35rem, 3.65vw, 3.35rem);--berke-hero-pad-end:clamp(1.9rem, 2.85vw, 2.5rem);--berke-hero-column-gap:clamp(1.55rem, 2.8vw, 2.65rem);--berke-hero-completion-gap:.72rem;--berke-hero-completion-line:#d7e5ea;--berke-hero-completion-bg:#f4f9fb;--berke-hero-completion-ink:#173c54;--berke-hero-completion-muted:#55717f;--berke-control-min:2.75rem;--berke-control-min-touch:2.75rem;--berke-control-pad-block:.58rem;--berke-control-pad-inline:.95rem;--berke-control-radius:.76rem;--berke-radius-sm:.5rem;--berke-radius-md:1rem;--berke-radius-lg:1.5rem;--berke-radius-xl:2rem;--berke-radius-pill:999px;--berke-border-subtle:1px solid var(--berke-color-border);--berke-shadow-xs:0 .25rem .8rem rgba(15, 36, 57, .04);--berke-shadow-sm:0 .5rem 1.5rem rgba(34, 61, 101, .08);--berke-shadow-md:0 1rem 2.6rem rgba(15, 36, 57, .10);--berke-shadow-lg:0 1.5rem 3.75rem rgba(15, 36, 57, .16);--berke-shadow-menu:var(--berke-shadow-lg);--berke-ds-container:var(--berke-container);--berke-ds-measure:var(--berke-content-measure);--berke-ds-gutter:var(--berke-gutter);--berke-ds-section-y:var(--berke-section-space);--berke-ds-section-y-compact:var(--berke-section-space-compact);--berke-ds-section-head-gap:var(--berke-section-head-gap);--berke-ds-split-gap:var(--berke-split-gap);--berke-ds-copy-gap:var(--berke-copy-gap);--berke-ds-card-copy-gap:var(--berke-card-copy-gap);--berke-ds-control-min:var(--berke-control-min-touch);--berke-ds-control-pad-block:var(--berke-control-pad-block);--berke-ds-control-pad-inline:var(--berke-control-pad-inline);--berke-ds-control-radius:var(--berke-control-radius);--berke-motion-duration-instant:90ms;--berke-motion-duration-fast:140ms;--berke-motion-duration-base:180ms;--berke-motion-duration-comfortable:260ms;--berke-motion-duration-reveal:360ms;--berke-motion-duration-signature:520ms;--berke-motion-ease-standard:cubic-bezier(.2, 0, 0, 1);--berke-motion-ease-enter:cubic-bezier(.16, 1, .3, 1);--berke-motion-ease-exit:cubic-bezier(.4, 0, 1, 1);--berke-motion-distance-micro:2px;--berke-motion-distance-reveal:10px;--berke-motion-distance-directional:18px;--berke-motion-scale-hover:1.01;--berke-motion-scale-media:1.02;--berke-motion-stagger:50ms;--berke-motion-property-safe:transform, opacity;--berke-motion-duration-slow:var(--berke-motion-duration-comfortable);--berke-transition-fast:var(--berke-motion-duration-fast) var(--berke-motion-ease-standard);--berke-transition:var(--berke-motion-duration-base) var(--berke-motion-ease-standard);--berke-transition-slow:var(--berke-motion-duration-comfortable) var(--berke-motion-ease-standard);--berke-z-content:1;--berke-z-sticky:50;--berke-z-header:1000;--berke-z-overlay:9990;--berke-z-modal:10050}@media (max-width:56rem){:root{--berke-type-display:clamp(2rem, 7vw, 2.3rem);--berke-type-h1:clamp(1.85rem, 6.7vw, 2.18rem);--berke-type-h2:clamp(1.34rem, 5.1vw, 1.65rem);--berke-type-h3:clamp(1.04rem, 3.8vw, 1.18rem);--berke-type-h4:1.03rem;--berke-type-lead:1.01rem;--berke-type-body:.985rem;--berke-type-card:.95rem;--berke-type-control:.94rem;--berke-type-small:.92rem;--berke-type-caption:.88rem;--berke-leading-display:1.48;--berke-leading-heading:1.62;--berke-leading-body:1.88;--berke-leading-support:1.86;--berke-copy-gap:.56rem;--berke-card-copy-gap:.38rem;--berke-hero-pad-start:2rem;--berke-hero-pad-end:1.7rem;--berke-hero-column-gap:1.1rem;--berke-section-space:clamp(2.35rem, 8vw, 3.3rem);--berke-section-space-compact:clamp(1.8rem, 6vw, 2.5rem);--berke-motion-distance-reveal:7px;--berke-motion-distance-directional:12px}}*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--berke-color-text);background:var(--berke-color-white);font-family:var(--berke-font-family);font-size:var(--berke-font-size-base);line-height:var(--berke-line-height-base);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}img,svg,video{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration-thickness:.08em;text-underline-offset:.2em}button,input,select,textarea{font:inherit}button{color:inherit}:focus-visible{outline:.1875rem solid var(--berke-color-accent-500);outline-offset:.1875rem}[hidden]{display:none!important}.berke-container{width:min(calc(100% - (2 * var(--berke-gutter))),var(--berke-container));margin-inline:auto}.berke-section{padding-block:var(--berke-section-space)}.screen-reader-text{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.screen-reader-text:focus{z-index:100000;top:.75rem;inset-inline-start:.75rem;width:auto;height:auto;padding:.75rem 1rem;margin:0;overflow:visible;clip:auto;white-space:normal;color:var(--berke-color-white);background:var(--berke-color-primary-900);border-radius:var(--berke-radius-sm)}html,body,button,input,select,textarea{font-family:var(--berke-font-family)}body.berke-font-iranyekan,body.berke-font-iranyekan .berke-site-header,body.berke-font-iranyekan .berke-site-header a,body.berke-font-iranyekan .berke-site-header button,body.berke-font-iranyekan .elementor-heading-title,body.berke-font-iranyekan .elementor-widget-text-editor,body.berke-font-iranyekan .elementor-button,body.berke-font-iranyekan .elementor-field,body.berke-font-iranyekan .elementor-field-label,body.berke-font-iranyekan .elementor-nav-menu a{font-family:"IRANYekanX",Tahoma,Arial,sans-serif!important}body.berke-font-iranyekan{--berke-font-family:"IRANYekanX", Tahoma, Arial, sans-serif;--e-global-typography-primary-font-family:"IRANYekanX";--e-global-typography-secondary-font-family:"IRANYekanX";--e-global-typography-text-font-family:"IRANYekanX";--e-global-typography-accent-font-family:"IRANYekanX"}body{font-size:var(--berke-type-body);font-weight:var(--berke-font-weight-regular);line-height:var(--berke-leading-body);font-kerning:normal}h1,h2,h3,h4,h5,h6,p,blockquote,figure{margin-block-start:0}h1,h2,h3,h4,h5,h6{color:var(--berke-color-heading);font-family:var(--berke-font-family);letter-spacing:0;text-wrap:balance}h1{font-size:var(--berke-type-h1);font-weight:800;line-height:var(--berke-leading-display)}h2{font-size:var(--berke-type-h2);font-weight:700;line-height:var(--berke-leading-heading)}h3{font-size:var(--berke-type-h3);font-weight:700;line-height:var(--berke-leading-heading)}h4{font-size:var(--berke-type-h4);font-weight:600;line-height:1.65}h5,h6{font-size:1rem;font-weight:600;line-height:1.7}p,li,dd,dt,figcaption,label,input,select,textarea,button{line-height:var(--berke-leading-body)}p{margin-block-end:1.1em}small,.berke-text-small{font-size:var(--berke-type-caption)}strong,b{font-weight:700}button,input[type="button"],input[type="submit"],input[type="reset"],.berke-header-cta,.berke-mobile-cta{font-weight:700}:root{--berke-font-family:"IRANYekanX",Tahoma,Arial,sans-serif}@font-face{font-family:"IRANYekanX";src:url(https://berke.ir/wp-content/uploads/berke/fonts/iranyekan/IRANYekanX-Regular.ttf?ver=1785687763) format("truetype");font-style:normal;font-weight:400;font-display:swap}@font-face{font-family:"IRANYekanX";src:url(https://berke.ir/wp-content/uploads/berke/fonts/iranyekan/IRANYekanX-Medium.ttf?ver=1785687763) format("truetype");font-style:normal;font-weight:500;font-display:swap}@font-face{font-family:"IRANYekanX";src:url(https://berke.ir/wp-content/uploads/berke/fonts/iranyekan/IRANYekanX-DemiBold.ttf?ver=1785687763) format("truetype");font-style:normal;font-weight:600;font-display:swap}@font-face{font-family:"IRANYekanX";src:url(https://berke.ir/wp-content/uploads/berke/fonts/iranyekan/IRANYekanX-Bold.ttf?ver=1785687763) format("truetype");font-style:normal;font-weight:700;font-display:swap}@font-face{font-family:"IRANYekanX";src:url(https://berke.ir/wp-content/uploads/berke/fonts/iranyekan/IRANYekanX-ExtraBold.ttf?ver=1785687763) format("truetype");font-style:normal;font-weight:800;font-display:swap}.berke-ui-button{display:inline-flex;align-items:center;justify-content:center;gap:.6rem;min-block-size:var(--berke-control-min);padding:.78rem 1.25rem;border:1px solid #fff0;border-radius:var(--berke-radius-pill);font-size:var(--berke-text-sm);font-weight:var(--berke-font-weight-bold);line-height:1.5;text-align:center;text-decoration:none;transition:transform var(--berke-transition),background-color var(--berke-transition),border-color var(--berke-transition),color var(--berke-transition),box-shadow var(--berke-transition)}.berke-ui-button svg,.berke-text-link svg{inline-size:1.1rem;block-size:1.1rem;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.8}.berke-ui-button--primary{color:var(--berke-color-white);background:var(--berke-color-primary-700);box-shadow:0 .8rem 2rem rgb(34 61 101 / .17)}.berke-ui-button--secondary{color:var(--berke-color-primary-700);background:rgb(255 255 255 / .88);border-color:rgb(34 61 101 / .18)}.berke-ui-button--light{color:var(--berke-color-primary-950);background:var(--berke-color-white)}.berke-ui-button--ghost-light{color:var(--berke-color-white);background:#fff0;border-color:rgb(255 255 255 / .45)}.berke-ui-button:hover{transform:translateY(-1px)}.berke-ui-button--primary:hover{background:var(--berke-color-primary-900)}.berke-ui-button--secondary:hover{border-color:var(--berke-color-primary-500);background:var(--berke-color-white)}.berke-ui-button--ghost-light:hover{background:rgb(255 255 255 / .1);border-color:rgb(255 255 255 / .7)}.berke-text-link{display:inline-flex;align-items:center;gap:.45rem;min-block-size:2.5rem;color:var(--berke-color-primary-700);font-size:var(--berke-text-sm);font-weight:var(--berke-font-weight-bold);text-decoration:none}.berke-text-link:hover{color:var(--berke-color-primary-900)}.berke-icon-badge{display:inline-grid;place-items:center;inline-size:3.15rem;block-size:3.15rem;color:var(--berke-color-primary-700);background:var(--berke-color-sky-100);border-radius:.9rem}.berke-icon-badge svg{inline-size:1.5rem;block-size:1.5rem;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:1.65}.berke-icon-badge--soft{background:var(--berke-surface-blue)}.berke-icon-badge--outline{background:var(--berke-color-white);border:var(--berke-border-subtle)}@media (prefers-reduced-motion:reduce){.berke-ui-button{transition:none}.berke-ui-button:hover{transform:none}}body{--berke-admin-bar-offset:0px}body.admin-bar{--berke-admin-bar-offset:32px}.berke-site-header{position:sticky;top:var(--berke-admin-bar-offset);z-index:9999;overflow:visible;background:rgb(255 255 255 / .965);border-bottom:1px solid rgb(15 36 57 / .09);box-shadow:0 .4rem 1.2rem rgb(15 36 57 / .035);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}.berke-site-header__accent{height:.22rem;background:linear-gradient(90deg,var(--berke-color-primary-700),var(--berke-color-primary-500),#75c8e3)}.berke-site-header__inner{position:relative;display:grid;grid-template-columns:minmax(13.5rem,17rem) minmax(0,1fr) auto;align-items:center;min-height:6rem;gap:1rem}.berke-site-branding{min-width:0}.berke-site-branding__home{display:grid;grid-template-columns:4.9rem minmax(0,1fr);align-items:center;gap:.72rem;max-width:17rem;color:inherit;text-decoration:none}.berke-site-branding__logo,.berke-site-branding__monogram{display:flex;align-items:center;justify-content:center;width:4.9rem;height:4.9rem;flex-shrink:0}.berke-site-branding__logo-image{display:block;width:100%;height:100%;object-fit:contain}.berke-site-branding__monogram{color:var(--berke-color-white);font-size:2rem;font-weight:800;background:linear-gradient(135deg,var(--berke-color-primary-700),var(--berke-color-primary-500));border-radius:50%}.berke-site-branding__copy{display:grid;gap:.22rem;min-width:0}.berke-site-branding__title{color:var(--berke-color-primary-900);font-size:1.18rem;font-weight:800;line-height:1.35}.berke-site-branding__tagline{color:var(--berke-color-muted);font-size:.76rem;line-height:1.55}.berke-menu-toggle{display:none;align-items:center;justify-content:center;gap:.5rem;min-height:2.8rem;padding:.55rem .9rem;background:var(--berke-color-white);border:1px solid var(--berke-color-border);border-radius:var(--berke-radius-pill);box-shadow:var(--berke-shadow-sm);cursor:pointer}.berke-menu-toggle__icon{display:grid;gap:.25rem;width:1.2rem}.berke-menu-toggle__icon span{display:block;width:100%;height:2px;background:currentColor;border-radius:99px;transition:transform var(--berke-transition),opacity var(--berke-transition)}.berke-menu-toggle[aria-expanded="true"] .berke-menu-toggle__icon span:nth-child(1){transform:translateY(6px) rotate(45deg)}.berke-menu-toggle[aria-expanded="true"] .berke-menu-toggle__icon span:nth-child(2){opacity:0}.berke-menu-toggle[aria-expanded="true"] .berke-menu-toggle__icon span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}.berke-primary-navigation{min-width:0}.berke-menu,.berke-menu ul{padding:0;margin:0;list-style:none}.berke-menu{display:flex;align-items:center;justify-content:center;gap:.15rem}.berke-menu>li{position:relative}.berke-menu>li>a,.berke-mega-menu__trigger{display:inline-flex;align-items:center;justify-content:center;gap:.46rem;min-height:3rem;padding:.5rem .72rem;color:var(--berke-color-text);font:inherit;font-size:.92rem;font-weight:600;line-height:1.4;text-decoration:none;white-space:nowrap;background:#fff0;border:0;border-radius:.85rem;cursor:pointer;transition:color var(--berke-transition),background var(--berke-transition),transform var(--berke-transition)}.berke-menu>li>a:hover,.berke-menu>li>a:focus-visible,.berke-menu .current-menu-item>a,.berke-mega-menu__trigger:hover,.berke-mega-menu__trigger:focus-visible,.berke-mega-menu__trigger[aria-expanded="true"]{color:var(--berke-color-primary-700);background:var(--berke-color-sky-100)}.berke-nav-icon{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;color:var(--berke-color-primary-700);background:rgb(255 255 255 / .82);border:1px solid rgb(34 61 101 / .12);border-radius:50%}.berke-nav-icon svg{display:block;width:1.12rem;height:1.12rem;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.berke-nav-icon--top{width:2rem;height:2rem;background:linear-gradient(180deg,#fff,var(--berke-color-sky-100))}.berke-mega-menu__trigger-chevron{width:.42rem;height:.42rem;margin-inline-start:.1rem;border-inline-end:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:translateY(-.1rem) rotate(45deg);transition:transform var(--berke-transition)}.berke-mega-menu__trigger[aria-expanded="true"] .berke-mega-menu__trigger-chevron{transform:translateY(.1rem) rotate(225deg)}.berke-header-cta{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;min-height:3.05rem;padding:.65rem 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