:root{--rk-blue-950:#04101f;--rk-blue-900:#06182e;--rk-blue-800:#0a2540;--rk-blue-700:#0e3358;--rk-blue-600:#124a80;--rk-blue-500:#1668c0;--rk-blue-400:#2e8fe0;--rk-blue-300:#6fb6ee;--rk-blue-200:#a9d4f5;--rk-blue-100:#dceaf8;--rk-blue-050:#eff6fd;--rk-brass-800:#6b4d0f;--rk-brass-700:#8a6415;--rk-brass-600:#a87c1e;--rk-brass-500:#c8952f;--rk-brass-400:#e0b457;--rk-brass-300:#edcd8b;--rk-brass-200:#f2dca8;--rk-brass-050:#fbf4e2;--rk-sand-900:#2e2a22;--rk-sand-700:#6b6252;--rk-sand-500:#a09080;--rk-sand-400:#bdb09b;--rk-sand-300:#d8cdba;--rk-sand-200:#eae3d6;--rk-sand-100:#f2ede3;--rk-sand-050:#f8f5ef;--rk-stone-950:#14181c;--rk-stone-900:#1c2228;--rk-stone-800:#2a3138;--rk-stone-700:#3d4750;--rk-stone-600:#55606b;--rk-stone-500:#6e7a86;--rk-stone-400:#98a3ad;--rk-stone-300:#c3cbd3;--rk-stone-200:#dfe3e6;--rk-stone-100:#edeff1;--rk-stone-050:#f6f7f8;--rk-clay-600:#a63a26;--rk-clay-500:#c2503a;--rk-verd-600:#1f7a54;--rk-verd-500:#2a9d6b;--rk-success:#1f7a54;--rk-success-soft:#e6f4ee;--rk-warning:#8a6415;--rk-warning-soft:#fbf4e2;--rk-danger:#b3402f;--rk-danger-soft:#fbeceb;--rk-info:#124a80;--rk-info-soft:#eff6fd;--rk-success-text:#14563a;--rk-danger-text:#7d2b1e;--rk-bg:var(--rk-sand-050);--rk-surface:#ffffff;--rk-surface-alt:var(--rk-sand-100);--rk-surface-sunken:var(--rk-sand-200);--rk-ink:var(--rk-stone-950);--rk-ink-soft:var(--rk-stone-700);--rk-muted:var(--rk-stone-600);--rk-faint:var(--rk-stone-600);--rk-line:var(--rk-sand-300);--rk-line-soft:var(--rk-sand-200);--rk-line-cool:var(--rk-stone-200);--rk-dark-bg:var(--rk-blue-900);--rk-dark-surface:var(--rk-blue-800);--rk-dark-raised:var(--rk-blue-700);--rk-dark-ink:#f4f7fa;--rk-dark-muted:#a8bccf;--rk-dark-line:rgba(169, 212, 245, 0.18);--rk-brand:var(--rk-blue-500);--rk-brand-ink:var(--rk-blue-600);--rk-accent:var(--rk-brass-500);--rk-accent-ink:var(--rk-brass-700);--rk-accent-on-dark:var(--rk-brass-400);--rk-white:#ffffff;--rk-black:#000000;--rk-wa-brand:#128c4a;--rk-wa-ink:#0d6b39;--rk-hero-ink:#eef4f9;--rk-overlay:rgba(6, 24, 46, 0.62);--rk-scrim:rgba(4, 16, 31, 0.82);--rk-grad-brand:linear-gradient(135deg, var(--rk-blue-700) 0%, var(--rk-blue-500) 55%, var(--rk-blue-400) 100%);--rk-grad-night:linear-gradient(160deg, var(--rk-blue-950) 0%, var(--rk-blue-800) 48%, var(--rk-blue-700) 100%);--rk-grad-brass:linear-gradient(100deg, var(--rk-brass-700) 0%, var(--rk-brass-500) 42%, var(--rk-brass-300) 100%);--rk-grad-stone:linear-gradient(180deg, var(--rk-sand-050) 0%, var(--rk-sand-100) 100%);--rk-grad-hero-scrim:linear-gradient(to top, rgba(4, 16, 31, 0.92) 0%, rgba(4, 16, 31, 0.55) 38%, rgba(4, 16, 31, 0.18) 72%, rgba(4, 16, 31, 0.35) 100%);--rk-grad-edge:linear-gradient(90deg, transparent, var(--rk-brass-500) 22%, var(--rk-blue-400) 78%, transparent);--rk-font-body:"RK IRANSans", "IRANSans", "Vazirmatn", "Segoe UI", Tahoma, sans-serif;--rk-font-head:"RK IRANSans", "IRANSans", "Vazirmatn", "Segoe UI", Tahoma, sans-serif;--rk-font-latin:"Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;--rk-font-num:"RK IRANSans", "IRANSans", Tahoma, sans-serif;--rk-fw-light:300;--rk-fw-regular:400;--rk-fw-medium:500;--rk-fw-bold:700;--rk-fw-black:900;--rk-fs-caption:clamp(0.75rem, 0.722rem + 0.14vw, 0.8125rem);--rk-fs-meta:clamp(0.8125rem, 0.784rem + 0.18vw, 0.875rem);--rk-fs-small:clamp(0.875rem, 0.847rem + 0.2vw, 0.9375rem);--rk-fs-body:clamp(1rem, 0.964rem + 0.28vw, 1.0625rem);--rk-fs-lead:clamp(1.0625rem, 0.963rem + 0.62vw, 1.25rem);--rk-fs-h6:clamp(1rem, 0.929rem + 0.35vw, 1.125rem);--rk-fs-h5:clamp(1.125rem, 1.054rem + 0.35vw, 1.25rem);--rk-fs-h4:clamp(1.25rem, 1.107rem + 0.71vw, 1.5rem);--rk-fs-h3:clamp(1.5rem, 1.286rem + 1.07vw, 1.875rem);--rk-fs-h2:clamp(1.875rem, 1.518rem + 1.79vw, 2.5rem);--rk-fs-h1:clamp(2.125rem, 1.482rem + 3.21vw, 3.25rem);--rk-fs-display:clamp(2.5rem, 1.357rem + 5.71vw, 4.5rem);--rk-fs-stat:clamp(2.25rem, 1.607rem + 3.21vw, 3.5rem);--rk-lh-display:1.3;--rk-lh-h1:1.36;--rk-lh-h2:1.42;--rk-lh-h3:1.5;--rk-lh-h4:1.6;--rk-lh-h5:1.7;--rk-lh-lead:1.9;--rk-lh-body:1.95;--rk-lh-meta:1.75;--rk-lh-ui:1.5;--rk-tracking-label:0.02em;--rk-tracking-latin:0.16em;--rk-s-1:0.25rem;--rk-s-2:0.5rem;--rk-s-3:0.75rem;--rk-s-4:1rem;--rk-s-5:1.5rem;--rk-s-6:2rem;--rk-s-7:3rem;--rk-s-8:4rem;--rk-s-9:5rem;--rk-s-10:6rem;--rk-s-11:8rem;--rk-s-12:10rem;--rk-section-y:clamp(4rem, 3.14rem + 4.29vw, 7.5rem);--rk-section-y-sm:clamp(3rem, 2.43rem + 2.86vw, 5rem);--rk-section-y-lg:clamp(5rem, 3.57rem + 7.14vw, 10rem);--rk-head-gap:clamp(1.5rem, 1.21rem + 1.43vw, 2.5rem);--rk-block-gap:clamp(1.25rem, 1.04rem + 1.07vw, 2rem);--rk-container:1280px;--rk-container-wide:1480px;--rk-container-narrow:1080px;--rk-prose:760px;--rk-gutter:clamp(1rem, 0.43rem + 2.86vw, 3rem);--rk-gap:clamp(1rem, 0.71rem + 1.43vw, 2rem);--rk-gap-lg:clamp(1.5rem, 1.07rem + 2.14vw, 3rem);--rk-topbar-h:40px;--rk-header-h:92px;--rk-header-h-stuck:68px;--rk-mobile-bar-h:64px;--rk-scroll-offset:calc(var(--rk-header-h-stuck) + 16px);--rk-r-xs:3px;--rk-r-sm:6px;--rk-r-md:10px;--rk-r-lg:18px;--rk-r-pill:999px;--rk-sh-xs:0 1px 2px rgba(20, 24, 28, 0.06);--rk-sh-sm:0 2px 6px rgba(20, 24, 28, 0.07), 0 1px 2px rgba(20, 24, 28, 0.05);--rk-sh-md:0 8px 24px -8px rgba(10, 37, 64, 0.18), 0 2px 6px rgba(20, 24, 28, 0.05);--rk-sh-lg:0 24px 56px -20px rgba(10, 37, 64, 0.32), 0 6px 16px -8px rgba(20, 24, 28, 0.1);--rk-sh-brand:0 12px 28px -12px rgba(22, 104, 192, 0.55);--rk-sh-brass:0 12px 28px -12px rgba(200, 149, 47, 0.5);--rk-ring:0 0 0 3px rgba(46, 143, 224, 0.35);--rk-ease:cubic-bezier(0.22, 0.61, 0.36, 1);--rk-ease-out:cubic-bezier(0.16, 1, 0.3, 1);--rk-ease-in-out:cubic-bezier(0.65, 0, 0.35, 1);--rk-t-fast:140ms;--rk-t-base:260ms;--rk-t-slow:520ms;--rk-t-reveal:760ms;--rk-z-base:1;--rk-z-raised:10;--rk-z-sticky:100;--rk-z-drawer:200;--rk-z-overlay:300;--rk-z-modal:400;--rk-z-toast:500}@media (max-width:767px){:root{--rk-header-h:68px;--rk-header-h-stuck:60px;--rk-topbar-h:0px;--rk-lh-body:1.9}}.rk-on-dark{--rk-bg:var(--rk-blue-900);--rk-surface:var(--rk-blue-800);--rk-surface-alt:var(--rk-blue-700);--rk-ink:var(--rk-dark-ink);--rk-ink-soft:#dbe6f0;--rk-muted:var(--rk-dark-muted);--rk-faint:#8ba4bb;--rk-line:var(--rk-dark-line);--rk-line-soft:rgba(169, 212, 245, 0.1);--rk-brand:var(--rk-blue-300);--rk-brand-ink:var(--rk-blue-200);--rk-accent-ink:var(--rk-accent-on-dark)}