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var(--color-border);position:relative;z-index:1}.rank-label{font-family:var(--font-mono);font-size:.875rem;font-weight:700;color:var(--color-text-secondary);letter-spacing:.04em}@media (max-width:768px){.challenge-container{padding:2rem 1rem}.challenge-title{font-size:2.375rem}.example-grid{grid-template-columns:1fr}.example-col:first-child{border-right:none;border-bottom:1.5px solid var(--color-border)}.editorial-button{width:100%;justify-content:center}.explorer-result{grid-template-columns:1fr;text-align:center;gap:1.25rem}.result-block{align-items:center}.status-block{text-align:center}.top-solver-card{gap:1.25rem;padding:1.5rem}.solver-name{font-size:1.25rem}.archive-notice{flex-direction:column;align-items:flex-start;gap:.5rem}}@media (max-width:480px){.challenge-title{font-size:2rem}.section-title{font-size:1.375rem}.month-badge{flex-direction:column;align-items:flex-start;gap:.25rem}.month-divider{display:none}.explorer-orders{gap:.625rem}.order-tile{width:72px;height:82px;padding:.375rem .25rem}.order-value{font-size:1rem}.result-value{font-size:2.25rem}.top-solver-card{flex-direction:column;text-align:center}.solver-rank-badge{align-self:center}}.editorial-button,.order-tile,.question-card,.rule-item,.submit-button{will-change:transform;-webkit-backface-visibility:hidden;backface-visibility:hidden}.challenge-section{content-visibility:auto;contain-intrinsic-size:0 400px}