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100%{transform:translateY(0)}50%{transform:translateY(-10px)}}.error-code-rails{font-size:120px;font-weight:800;line-height:1;background:linear-gradient(135deg, var(--av-primary), var(--av-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;position:relative;display:inline-block}.error-code-rails::after{content:"404";position:absolute;left:0;top:0;width:100%;height:100%;background:linear-gradient(135deg, var(--av-primary), var(--av-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;opacity:0.3;transform:translate(4px, 4px);z-index:-1;filter:blur(8px)}.error-page-content h1{font-size:32px;margin-bottom:16px}.error-description{color:var(--av-text-secondary);font-size:18px;margin-bottom:32px}.error-actions-rails{display:flex;gap:16px;justify-content:center;margin-bottom:48px;flex-wrap:wrap}.error-suggestions{padding-top:32px;border-top:1px solid var(--av-border)}.error-suggestions h3{font-size:14px;text-transform:uppercase;letter-spacing:0.05em;color:var(--av-text-muted);margin-bottom:16px}.suggestion-links{display:flex;gap:24px;justify-content:center;flex-wrap:wrap}.suggestion-links a{color:var(--av-text-secondary);text-decoration:none;font-size:15px;transition:color 0.2s}.suggestion-links a:hover{color:var(--av-primary)}@media (max-width: 640px){.error-code-rails{font-size:80px}.error-page-content h1{font-size:24px}}.main-nav a{position:relative;transition:color 0.2s}.main-nav a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:linear-gradient(90deg, var(--av-primary), var(--av-accent));transition:width 0.3s ease}.main-nav a:hover::after,.main-nav a.active::after{width:100%}.main-nav a.active{color:var(--av-primary);font-weight:600}.mobile-nav a.active{color:var(--av-primary);background:rgba(37,99,235,0.05);border-radius:8px;padding-left:12px;margin-left:-12px}