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.line{padding-left:2.8rem}.shiki-numbered .line:before{width:2.2rem;font-size:.68rem}}.code-expand-btn{color:#a6adc8;width:100%;font-family:var(--font-mono);cursor:pointer;transition:background var(--transition-fast), color var(--transition-fast);letter-spacing:.3px;background:#181825;border:none;border-top:1px solid #ffffff0f;justify-content:center;align-items:center;gap:7px;padding:10px 16px;font-size:1.03rem;font-weight:500;display:flex}.code-expand-btn:hover{color:#cba6f7;background:#1e1e2e}.code-expand-btn svg{flex-shrink:0}.level-tiles-grid{grid-template-columns:repeat(3,1fr);gap:1.5rem;max-width:1100px;margin:0 auto;display:grid}.level-tile{border-radius:var(--radius-xl);border:1px solid var(--border-color);background:var(--bg-card);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);color:inherit;transition:transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);flex-direction:column;gap:0;padding:2.25rem 2rem 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