.tab-bar[data-astro-cid-d522xbg6]{display:flex;gap:4px;margin-bottom:12px}.tab-bar[data-astro-cid-d522xbg6] button[data-astro-cid-d522xbg6]{padding:10px 28px;border:2px solid #444;background:transparent;color:#888;border-radius:10px 10px 0 0;font-size:1rem;cursor:pointer;transition:all .2s}.tab-bar[data-astro-cid-d522xbg6] button[data-astro-cid-d522xbg6].active{background:#16213e;color:#fff;border-color:#e94560}.section[data-astro-cid-d522xbg6]{display:none;width:100%}.section[data-astro-cid-d522xbg6].active{display:flex;flex-direction:column;align-items:center;gap:16px}.learn-text[data-astro-cid-d522xbg6]{font-size:1.15rem;color:#ccc;text-align:center;line-height:1.6;max-width:560px}.learn-text[data-astro-cid-d522xbg6] strong[data-astro-cid-d522xbg6]{color:#e94560}.learn-step[data-astro-cid-d522xbg6]{display:none}.learn-step[data-astro-cid-d522xbg6].active{display:block}.step-nav[data-astro-cid-d522xbg6]{display:flex;gap:12px;align-items:center}.step-nav[data-astro-cid-d522xbg6] button[data-astro-cid-d522xbg6]{padding:8px 24px;border:2px solid #e94560;background:transparent;color:#e94560;border-radius:8px;font-size:1rem;cursor:pointer;transition:all .2s}.step-nav[data-astro-cid-d522xbg6] button[data-astro-cid-d522xbg6]:hover{background:#e94560;color:#fff}.step-nav[data-astro-cid-d522xbg6] .step-count[data-astro-cid-d522xbg6]{color:#666;font-size:.9rem}.canvas-wrapper[data-astro-cid-d522xbg6]{width:min(100%,700px);background:#1f1f38;border-radius:16px;overflow:hidden;box-shadow:0 4px 24px #0006}.canvas-wrapper[data-astro-cid-d522xbg6] canvas[data-astro-cid-d522xbg6]{display:block;width:100%!important;height:auto!important;touch-action:none}.controls[data-astro-cid-d522xbg6]{display:flex;gap:16px;align-items:center;flex-wrap:wrap;justify-content:center}.controls[data-astro-cid-d522xbg6] label[data-astro-cid-d522xbg6]{font-size:1rem;color:#ccc}.controls[data-astro-cid-d522xbg6] input[data-astro-cid-d522xbg6][type=range]{width:140px;accent-color:#e94560}.controls[data-astro-cid-d522xbg6] .value[data-astro-cid-d522xbg6]{font-size:1.4rem;font-weight:700;color:#e94560;min-width:2ch;text-align:center}.explanation[data-astro-cid-d522xbg6]{font-size:1.1rem;color:#ccc;text-align:center;max-width:500px;line-height:1.5}.challenge-prompt[data-astro-cid-d522xbg6]{font-size:1.4rem;color:#fff;text-align:center;width:min(100%,620px);background:#16213e;padding:16px 32px;border-radius:12px;border:2px solid #0f3460}.challenge-prompt[data-astro-cid-d522xbg6] strong[data-astro-cid-d522xbg6]{color:#e94560}.score-bar[data-astro-cid-d522xbg6]{display:flex;gap:24px;align-items:center;color:#aaa;font-size:1rem}.score-bar[data-astro-cid-d522xbg6] .correct[data-astro-cid-d522xbg6]{color:#4ecdc4;font-weight:700}.score-bar[data-astro-cid-d522xbg6] .total[data-astro-cid-d522xbg6]{color:#e94560;font-weight:700}.answer-row[data-astro-cid-d522xbg6]{display:flex;gap:16px;align-items:center;flex-wrap:wrap;justify-content:center;width:min(100%,620px)}.answer-input[data-astro-cid-d522xbg6]{width:clamp(88px,18vw,108px);min-height:56px;padding:10px 12px;text-align:center;font-size:1.4rem;font-weight:700;border:2px solid #0f3460;border-radius:12px;background:#16213e;color:#e94560}.answer-input[data-astro-cid-d522xbg6]:focus{border-color:#e94560;outline:none}.answer-slash[data-astro-cid-d522xbg6]{font-size:2rem;color:#fff}.controls-row[data-astro-cid-d522xbg6]{display:flex;gap:16px;align-items:center;flex-wrap:wrap;justify-content:center}.check-btn[data-astro-cid-d522xbg6]{padding:12px 40px;border:none;background:#e94560;color:#fff;border-radius:10px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .2s}.check-btn[data-astro-cid-d522xbg6]:hover{background:#c73650}.feedback[data-astro-cid-d522xbg6]{font-size:1.2rem;font-weight:700;min-height:1.5em;text-align:center;width:min(100%,620px)}.feedback[data-astro-cid-d522xbg6].correct{color:#4ecdc4}.feedback[data-astro-cid-d522xbg6].wrong{color:#e94560}.insight[data-astro-cid-d522xbg6]{margin-top:12px;padding:16px 28px;background:linear-gradient(135deg,#0f3460,#16213e);border-left:4px solid #4ecdc4;border-radius:8px;color:#4ecdc4;font-size:1.1rem;text-align:center;max-width:520px;width:min(100%,620px)}@media(max-width:600px){.controls[data-astro-cid-d522xbg6]{flex-direction:column;gap:8px;align-items:stretch}.controls[data-astro-cid-d522xbg6] label[data-astro-cid-d522xbg6]{text-align:center;font-size:.9rem}.controls[data-astro-cid-d522xbg6] input[data-astro-cid-d522xbg6][type=range]{width:100%}.controls[data-astro-cid-d522xbg6] .value[data-astro-cid-d522xbg6]{text-align:center;font-size:1.2rem}.tab-bar[data-astro-cid-d522xbg6]{gap:2px}.tab-bar[data-astro-cid-d522xbg6] button[data-astro-cid-d522xbg6]{padding:8px 12px;font-size:.85rem}.mode-toggle[data-astro-cid-d522xbg6] button[data-astro-cid-d522xbg6]{padding:6px 14px;font-size:.9rem}.challenge-prompt[data-astro-cid-d522xbg6]{font-size:1.05rem;padding:12px 14px}.challenge-prompt[data-astro-cid-d522xbg6] strong[data-astro-cid-d522xbg6]{font-size:1.15rem}.step-nav[data-astro-cid-d522xbg6]{gap:8px}.step-nav[data-astro-cid-d522xbg6] button[data-astro-cid-d522xbg6]{padding:8px 14px;font-size:.85rem}.fraction-label[data-astro-cid-d522xbg6]{font-size:1.8rem}.score-bar[data-astro-cid-d522xbg6]{flex-wrap:wrap;gap:8px;font-size:.85rem;justify-content:center}.check-btn[data-astro-cid-d522xbg6]{padding:10px 28px;font-size:1rem}.explanation[data-astro-cid-d522xbg6]{font-size:.95rem}.feedback[data-astro-cid-d522xbg6]{font-size:1rem}.insight[data-astro-cid-d522xbg6]{font-size:.95rem;padding:12px 16px}.learn-text[data-astro-cid-d522xbg6]{font-size:1rem}.canvas-wrapper[data-astro-cid-d522xbg6]{border-radius:12px}}