.arFiJq_header{z-index:var(--layer-header);min-height:var(--header-height);background:var(--color-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0}.arFiJq_container{width:min(100%, var(--container-page));min-height:var(--header-height);justify-content:space-between;align-items:center;gap:var(--space-6);padding:0 var(--container-gutter);margin:0 auto;display:flex}.arFiJq_desktopNav{align-items:center;gap:var(--space-2);display:flex}.arFiJq_logo{min-height:var(--control-target)}.arFiJq_navLink,.arFiJq_quizLink{min-height:var(--control-target);font-size:var(--font-size-sm);border-radius:var(--radius-sm);justify-content:center;align-items:center;padding:.7rem .9rem;font-weight:700;text-decoration:none;display:inline-flex}.arFiJq_navLink{color:var(--color-text-muted)}.arFiJq_navLink:hover{color:var(--color-action);background:var(--color-action-soft)}.arFiJq_quizLink{margin-left:var(--space-2);color:var(--color-text-inverse);background:var(--color-action);box-shadow:var(--shadow-sm)}.arFiJq_quizLink:hover{color:var(--color-text-inverse);background:var(--color-action-hover);box-shadow:var(--shadow-md)}.arFiJq_menuButton{width:var(--control-target);height:var(--control-target);color:var(--color-text);background:var(--color-surface);border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);place-items:center;padding:0;display:none}.arFiJq_portal{z-index:var(--layer-modal);position:fixed;inset:0}.arFiJq_backdrop{background:var(--color-overlay-soft);transition:opacity var(--duration-standard) var(--ease-standard);position:fixed;inset:0}.arFiJq_backdrop[data-starting-style],.arFiJq_backdrop[data-ending-style]{opacity:0}.arFiJq_viewport{overscroll-behavior-y:contain;justify-content:flex-end;align-items:flex-start;display:flex;position:fixed;inset:0;overflow-y:auto}.arFiJq_mobilePanel{align-content:start;gap:var(--space-10);width:min(92vw,25rem);min-height:100dvh;padding:max(6rem, calc(env(safe-area-inset-top) + var(--space-16))) max(var(--space-6), env(safe-area-inset-right)) max(var(--space-8), env(safe-area-inset-bottom)) max(var(--space-6), env(safe-area-inset-left));color:var(--color-text-inverse);background:var(--color-surface-strong);box-shadow:var(--shadow-panel);transform-origin:100%;transition:opacity var(--duration-standard) var(--ease-standard), transform var(--duration-deliberate) var(--ease-emphasized);display:grid;position:relative}.arFiJq_mobilePanel[data-starting-style],.arFiJq_mobilePanel[data-ending-style]{opacity:0;transform:translate(1.5rem)}.arFiJq_mobileHeading{gap:var(--space-3);display:grid}.arFiJq_mobileTitle{max-width:10ch;font-family:var(--font-display);font-size:var(--font-size-2xl);font-weight:750;line-height:var(--line-heading);letter-spacing:var(--tracking-tight)}.arFiJq_mobileDescription{max-width:34ch;color:var(--color-text-inverse-subtle);font-size:var(--font-size-sm);line-height:1.6}.arFiJq_closeButton{top:max(var(--space-5), env(safe-area-inset-top));right:max(var(--space-5), env(safe-area-inset-right));width:var(--control-target);height:var(--control-target);color:var(--color-text-inverse);background:var(--color-surface-inverse-subtle);border:1px solid var(--color-border-inverse-subtle);border-radius:var(--radius-sm);place-items:center;padding:0;display:grid;position:fixed}.arFiJq_mobileNav{gap:var(--space-3);display:grid}.arFiJq_mobileQuizLink,.arFiJq_mobileNavLink{min-height:3.25rem;color:var(--color-text-inverse);border-radius:var(--radius-md);justify-content:space-between;align-items:center;padding:.9rem 1rem;font-weight:750;text-decoration:none;display:flex}.arFiJq_mobileQuizLink{color:var(--color-ink-950);background:var(--color-surface-inverse);justify-content:center}.arFiJq_mobileNavLink{background:var(--color-surface-inverse-faint)}.arFiJq_mobileNavLink:hover{color:var(--color-text-inverse);background:var(--color-surface-inverse-active)}@media (max-width:52rem){.arFiJq_desktopNav{display:none}.arFiJq_menuButton{display:grid}}@media (prefers-reduced-motion:reduce){.arFiJq_backdrop,.arFiJq_mobilePanel{transition:none}}