._0F9Z6a_navigation{border-bottom:1px solid var(--border);gap:8px;margin-top:28px;padding-bottom:12px;display:flex}._0F9Z6a_link{color:var(--text-muted);border-radius:6px;padding:10px 14px;font-size:.95rem;font-weight:500;position:relative}._0F9Z6a_link:hover{color:var(--accent);background:var(--accent-soft)}._0F9Z6a_activeLink{color:var(--accent);background:var(--accent-soft);font-weight:700}._0F9Z6a_activeLink:after{background:var(--accent);content:"";height:2px;position:absolute;bottom:-13px;left:14px;right:14px}@media (max-width:520px){._0F9Z6a_navigation{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}._0F9Z6a_link{text-align:center}._0F9Z6a_activeLink:after{display:none}}
.YIH9zq_levelPage{width:100%}.YIH9zq_heading{max-width:720px}.YIH9zq_level{color:var(--text-muted);letter-spacing:.08em;text-transform:uppercase;font-size:.8rem;font-weight:700}.YIH9zq_heading h1{color:var(--foreground);margin:8px 0 6px;font-size:clamp(1.8rem,4vw,2.4rem)}.YIH9zq_heading p{color:var(--text-muted);margin:0;font-size:1rem}.YIH9zq_content{padding-top:32px}.YIH9zq_content>h2{color:var(--foreground);margin-top:0;font-size:1.45rem}.YIH9zq_content>p{color:var(--text-secondary);line-height:1.6}.YIH9zq_levelPage:has([data-resource-reader])>.YIH9zq_heading h1{font-size:1.5rem}.YIH9zq_levelPage:has([data-resource-reader])>.YIH9zq_heading p{font-size:.9rem}.YIH9zq_levelPage:has([data-exercise-workspace])>.YIH9zq_heading p{display:none}