:root{--gk-color-obsidian:#0a0a0a;--gk-color-obsidian-dark:#050505;--gk-color-obsidian-light:#1a1a1a;--gk-color-charcoal:#1f1f1f;--gk-color-charcoal-light:#2a2a2a;--gk-color-lime:#aaff00;--gk-color-lime-dark:#88cc00;--gk-color-lime-light:#ccff33;--gk-color-lime-glow:#a3ff00;--gk-color-lime-glow-rgba:rgba(163, 255, 0, 0.2);--gk-color-amber:#ff8c00;--gk-color-amber-dark:#cc7000;--gk-color-champagne:#f5e6d3;--gk-color-champagne-dark:#d4c4a8;--gk-text-primary:#e8e8e8;--gk-text-secondary:#b8b8b8;--gk-text-muted:#888888;--gk-shadow-3d-sm:0 2px 4px rgba(0, 0, 0, 0.4),0 4px 8px rgba(0, 0, 0, 0.3),0 8px 16px rgba(0, 0, 0, 0.2),inset 0 1px 0 rgba(170, 255, 0, 0.05);--gk-shadow-3d-md:0 4px 8px rgba(0, 0, 0, 0.5),0 8px 16px rgba(0, 0, 0, 0.4),0 16px 32px rgba(0, 0, 0, 0.3),inset 0 1px 0 rgba(170, 255, 0, 0.08);--gk-shadow-3d-lg:0 8px 16px rgba(0, 0, 0, 0.6),0 16px 32px rgba(0, 0, 0, 0.5),0 32px 64px rgba(0, 0, 0, 0.4),inset 0 2px 0 rgba(170, 255, 0, 0.1);--gk-shadow-3d-hover:0 12px 24px rgba(0, 0, 0, 0.7),0 24px 48px rgba(0, 0, 0, 0.6),0 48px 96px rgba(0, 0, 0, 0.5),0 0 40px rgba(170, 255, 0, 0.15),inset 0 2px 0 rgba(170, 255, 0, 0.12);--gk-glass-bg:rgba(26, 26, 26, 0.7);--gk-glass-border:rgba(170, 255, 0, 0.2);--gk-glass-glow:rgba(170, 255, 0, 0.1);--gk-font-base:clamp(16px, 1.5vw, 18px);--gk-font-sm:clamp(14px, 1.2vw, 16px);--gk-font-lg:clamp(18px, 2vw, 22px);--gk-font-xl:clamp(24px, 3vw, 32px);--gk-font-2xl:clamp(32px, 4vw, 48px);--gk-font-3xl:clamp(48px, 6vw, 72px);--gk-font-4xl:clamp(64px, 8vw, 96px);--gk-space-xs:clamp(0.5rem, 1vw, 0.75rem);--gk-space-sm:clamp(1rem, 2vw, 1.5rem);--gk-space-md:clamp(1.5rem, 3vw, 2.5rem);--gk-space-lg:clamp(2.5rem, 5vw, 4rem);--gk-space-xl:clamp(4rem, 8vw, 6rem);--gk-space-2xl:clamp(6rem, 12vw, 10rem);--gk-radius-sm:8px;--gk-radius-md:16px;--gk-radius-lg:24px;--gk-radius-xl:32px;--gk-transition-fast:150ms cubic-bezier(0.4, 0, 0.2, 1);--gk-transition-base:300ms cubic-bezier(0.4, 0, 0.2, 1);--gk-transition-slow:500ms cubic-bezier(0.4, 0, 0.2, 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1px rgba(255,255,255,.05) inset;transition:transform .3s ease,opacity .3s ease,background .3s ease;opacity:0;animation:headerEntrance .8s ease-out forwards;overflow:visible;min-height:48px;display:flex;align-items:center;will-change:transform,opacity;backface-visibility:hidden;contain:layout paint;transform:translateZ(0)}.gk-header.scrolled{background:rgba(10,10,10,.95);box-shadow:0 8px 32px rgba(0,0,0,.6),0 0 0 1px rgba(255,255,255,.08) inset;padding:10px 24px}.gk-header::before{display:none}.gk-header::after{display:none}.gk-header__glow{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0;border-radius:20px;opacity:0;transition:opacity .3s ease}.gk-nav__toggle{position:relative;z-index:1}.gk-header:hover .gk-header__glow{opacity:1}@keyframes backgroundShift{0%,100%{background-position:0 0,100% 100%,0 0}50%{background-position:100% 100%,0 0,0 0}}@keyframes headerEntrance{from{opacity:0;transform:translateY(-20px) translateZ(0)}to{opacity:1;transform:translateY(0) translateZ(0)}}.gk-header:hover{background:rgba(20,20,20,.75);box-shadow:0 12px 48px rgba(0,0,0,.5),0 0 0 1px rgba(255,255,255,.08) inset}.gk-header .gk-container{display:flex;justify-content:space-between;align-items:center;width:100%;max-width:1200px;margin:0 auto;padding:0;position:relative;z-index:1;height:100%;min-height:48px}.gk-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--gk-text-primary);font-weight:600;font-size:var(--gk-font-base);letter-spacing:-.01em;white-space:nowrap;flex-shrink:0;height:100%;line-height:1;will-change:transform;backface-visibility:hidden}.gk-logo-3d{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;min-width:40px;min-height:40px;background:rgba(20,20,20,.3);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-radius:10px;box-shadow:0 4px 12px rgba(170,255,0,.3),0 0 20px rgba(170,255,0,.2),inset 0 1px 0 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.gk-btn--primary::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:var(--gk-color-lime);transition:left .3s cubic-bezier(.4, 0, .2, 1);z-index:-1}.gk-nav__list .gk-btn--primary:hover{background:var(--gk-color-lime);color:var(--gk-color-obsidian);border-color:var(--gk-color-lime);transform:translateY(-1px) translateZ(0);box-shadow:0 0 20px rgba(170,255,0,.4)}.gk-nav__list .gk-btn--primary:hover::before{left:0}.gk-nav__list .gk-btn--primary::after{display:none}.gk-hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:calc(var(--gk-space-2xl) + 80px) 0 var(--gk-space-2xl);overflow:hidden;margin-top:0;will-change:transform,opacity;backface-visibility:hidden;contain:layout paint;transform:translateZ(0)}.gk-hero__bg{position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 30% 40%,rgba(170,255,0,.08) 0,transparent 50%),radial-gradient(circle at 70% 60%,rgba(255,140,0,.05) 0,transparent 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0;position:relative}.gk-section--alt{background:var(--gk-color-obsidian-light);background-image:radial-gradient(circle at 50% 0,rgba(170,255,0,.02) 0,transparent 50%)}.gk-section__head{text-align:center;margin-bottom:var(--gk-space-xl)}.gk-section__title{font-size:var(--gk-font-3xl);font-weight:900;margin-bottom:var(--gk-space-sm);color:var(--gk-text-primary);background:linear-gradient(135deg,var(--gk-text-primary) 0,var(--gk-color-lime) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.gk-section__sub{font-size:var(--gk-font-lg);color:var(--gk-text-secondary);max-width:700px;margin:0 auto}.gk-grid{display:grid;gap:var(--gk-space-lg)}.gk-grid--2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.gk-grid--3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.gk-grid--4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.gk-card{padding:var(--gk-space-lg);background:var(--gk-glass-bg);backdrop-filter:blur(20px) 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