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0;background-color:var(--color-white);border:none;border-radius:0;box-shadow:0 14px 22px -12px rgb(15 18 32 / .18);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity var(--transition-fast),transform var(--transition-fast),visibility var(--transition-fast)}.nav-item.is-open .mega-menu,.nav-item:focus-within .mega-menu{opacity:1;visibility:visible;transform:translateY(0)}.mega-menu-grid,.mega-cards-grid,.mega-guide-grid,.mega-auth-bar{max-width:var(--container-max);margin-inline:auto;padding-inline:var(--space-4)}.mega-menu-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:var(--space-6)}.mega-menu-section{display:flex;flex-direction:column}.mega-menu-title{padding-bottom:var(--space-3);margin-bottom:var(--space-3);font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid 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var(--transition-fast)}.mega-menu-cta-link:hover{color:var(--color-primary-hover)}.mega-menu-cta-link svg{width:16px;height:16px}.nav-backdrop{position:fixed;inset:0;z-index:150;background:rgb(255 255 255 / .12);-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);opacity:0;visibility:hidden;pointer-events:none;transition:opacity var(--transition-fast),visibility var(--transition-fast)}body.nav-backdrop-active .nav-backdrop{opacity:1;visibility:visible}@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.nav-backdrop{background:rgb(15 18 32 / .18)}}@media (prefers-reduced-motion:reduce){.nav-backdrop{transition:none}}.mega-menu--cards{padding-bottom:var(--space-10)}.mega-cards-grid{display:grid;grid-template-columns:1fr 1fr 1.15fr;gap:var(--space-6);min-height:240px}.mega-card-col{display:flex;flex-direction:column}.mega-rich{display:block;padding:var(--space-2) var(--space-3);margin:0 calc(-1 * 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var(--space-2);font-size:11px;font-weight:var(--font-weight-bold,700);letter-spacing:.06em;text-transform:uppercase;color:var(--color-primary);background-color:var(--color-white);border-radius:var(--radius-full,999px)}.mega-feature-title{font-size:var(--font-size-base);font-weight:var(--font-weight-bold,700);color:var(--color-text)}.mega-feature-desc{margin-top:var(--space-1);margin-bottom:var(--space-4);font-size:var(--font-size-xs);color:var(--color-text-muted);line-height:1.5}.mega-feature-cta{display:inline-flex;align-items:center;gap:var(--space-1);margin-top:auto;font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--color-primary)}.mega-feature-cta svg{width:16px;height:16px}.mega-auth-bar{display:flex;align-items:center;gap:var(--space-3);margin-top:var(--space-6);padding-top:var(--space-5);border-top:1px solid 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var(--transition-fast)}.mega-about-card:hover,.mega-about-card:focus{border-color:var(--color-primary)}.mega-about-text{display:flex;flex-direction:column;gap:2px}.mega-about-title{font-size:var(--font-size-sm);font-weight:var(--font-weight-bold,700);color:var(--color-text)}.mega-about-desc{font-size:var(--font-size-xs);color:var(--color-text-muted)}.mega-about-card svg{width:18px;height:18px;flex-shrink:0;color:var(--color-primary)}.lang-switcher{display:flex;align-items:center;position:relative}.lang-switcher-btn{display:flex;align-items:center;gap:var(--space-1);padding:var(--space-2) var(--space-3);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--color-text);background:#fff0;border:none;border-radius:var(--radius-full,999px);cursor:pointer;transition:background-color var(--transition-fast),color var(--transition-fast)}.lang-switcher-btn:hover,.lang-switcher-btn:focus,.lang-switcher.is-open .lang-switcher-btn{border-color:var(--color-primary);background-color:var(--color-primary-light);color:var(--color-primary)}.lang-switcher-btn .lang-switcher-code{letter-spacing:.04em}.lang-switcher-btn svg:first-child{width:16px;height:16px;opacity:.7}.lang-switcher-btn svg:last-child{width:14px;height:14px;transition:transform var(--transition-fast)}.lang-switcher.is-open .lang-switcher-btn svg:last-child{transform:rotate(180deg)}.lang-switcher-dropdown{position:absolute;top:100%;right:0;z-index:var(--z-dropdown);min-width:180px;margin-top:var(--space-2);padding:var(--space-1);background-color:var(--color-white);border:1px solid var(--color-border-light);border-radius:var(--radius-lg,12px);box-shadow:var(--shadow-lg,0 10px 30px rgb(15 23 42 / .12));opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity var(--transition-fast),transform var(--transition-fast),visibility var(--transition-fast)}.lang-switcher.is-open .lang-switcher-dropdown{opacity:1;visibility:visible;transform:translateY(0)}.lang-option{display:flex;align-items:center;gap:var(--space-2);width:100%;padding:var(--space-2) var(--space-3);font-size:var(--font-size-sm);color:var(--color-text);background:#fff0;border:none;border-radius:var(--radius-md);cursor:pointer;text-align:left;transition:background-color var(--transition-fast),color var(--transition-fast)}.lang-option:hover,.lang-option:focus{background-color:var(--color-primary-light);color:var(--color-primary)}.lang-option-badge{display:inline-flex;align-items:center;justify-content:center;min-width:30px;padding:2px 6px;font-size:11px;font-weight:var(--font-weight-bold,700);letter-spacing:.04em;color:var(--color-text-muted,#64748b);background-color:var(--color-border-light);border-radius:var(--radius-sm)}.lang-option-label{flex:1 1 auto}.lang-option.active{color:var(--color-primary);font-weight:var(--font-weight-semibold)}.lang-option.active .lang-option-badge{color:var(--color-primary);background-color:var(--color-primary-light)}.lang-option-check{display:inline-flex;margin-left:auto;color:var(--color-primary)}.lang-option-check svg{width:16px;height:16px}.mobile-menu{position:fixed;top:0;left:0;right:0;bottom:0;z-index:var(--z-modal);display:flex;visibility:hidden}.mobile-menu.is-open{visibility:visible}.mobile-menu-overlay{position:absolute;inset:0;background-color:rgb(0 0 0 / .5);opacity:0;transition:opacity var(--transition-normal)}.mobile-menu.is-open .mobile-menu-overlay{opacity:1}.mobile-menu-panel{position:relative;width:100%;max-width:320px;height:100%;margin-left:auto;background-color:var(--color-white);display:flex;flex-direction:column;transform:translateX(100%);transition:transform var(--transition-normal)}.mobile-menu.is-open .mobile-menu-panel{transform:translateX(0)}.mobile-menu-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4);border-bottom:1px solid 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.1)}.mobile-nav{flex:1;overflow-y:auto;padding:var(--space-4)}.mobile-nav-list{display:flex;flex-direction:column}.mobile-nav-item{border-bottom:1px solid var(--color-border-light)}.mobile-nav-item:last-child{border-bottom:none}.mobile-nav-link{display:block;padding:var(--space-4) 0;font-size:var(--font-size-base);font-weight:var(--font-weight-medium);color:var(--color-text);transition:color var(--transition-fast)}.mobile-nav-link:hover,.mobile-nav-link:focus{color:var(--color-primary)}.mobile-accordion-trigger{display:flex;align-items:center;justify-content:space-between;width:100%;padding:var(--space-4) 0;font-size:var(--font-size-base);font-weight:var(--font-weight-medium);color:var(--color-text);background:#fff0;border:none;cursor:pointer;text-align:left;transition:color var(--transition-fast)}.mobile-accordion-trigger:hover,.mobile-accordion-trigger:focus{color:var(--color-primary)}.mobile-accordion-trigger svg{width:20px;height:20px;transition:transform var(--transition-fast)}.mobile-nav-item.is-open .mobile-accordion-trigger svg{transform:rotate(180deg)}.mobile-accordion-content{display:none;padding-bottom:var(--space-4)}.mobile-nav-item.is-open .mobile-accordion-content{display:block}.mobile-accordion-list{display:flex;flex-direction:column;gap:var(--space-1);padding-left:var(--space-4)}.mobile-accordion-link{display:flex;align-items:center;justify-content:space-between;padding:var(--space-2) var(--space-3);font-size:var(--font-size-sm);color:var(--color-text-muted);border-radius:var(--radius-md);transition:background-color var(--transition-fast),color var(--transition-fast)}.mobile-accordion-link:hover,.mobile-accordion-link:focus{background-color:var(--color-border-light);color:var(--color-text)}.mobile-accordion-count{font-size:var(--font-size-xs);color:var(--color-text-muted)}.mobile-lang-switcher{display:flex;gap:var(--space-2);padding:var(--space-4);border-top:1px solid var(--color-border-light)}.mobile-lang-btn{flex:1;padding:var(--space-3);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text-muted);background-color:var(--color-bg);border:1px solid var(--color-border-light);border-radius:var(--radius-md);cursor:pointer;transition:background-color var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast)}.mobile-lang-btn:hover,.mobile-lang-btn:focus{background-color:var(--color-white);border-color:var(--color-border)}.mobile-lang-btn.active{color:var(--color-primary);background-color:var(--color-primary-light);border-color:var(--color-primary)}.mobile-menu-footer{padding:var(--space-4);border-top:1px solid var(--color-border-light);display:flex;flex-direction:column;gap:var(--space-3)}.btn-block{width:100%;justify-content:center}.header-actions{display:flex;align-items:center;gap:var(--space-3)}@media (max-width:1023px){.header-actions .lang-switcher,.header-actions .btn-ghost,.header-actions .btn-primary:not(.mobile-cta){display:none}}.app-header-nav{display:none}@media (min-width:768px){.app-header-nav{display:flex;align-items:center;gap:var(--space-4)}.app-header-nav-link{font-size:var(--font-size-sm);color:var(--color-text-muted);transition:color var(--transition-fast)}.app-header-nav-link:hover,.app-header-nav-link:focus{color:var(--color-primary)}}