.tab-bar[data-astro-cid-gtwmwwae]{display:flex;gap:4px;margin-bottom:12px}.tab-bar[data-astro-cid-gtwmwwae] button[data-astro-cid-gtwmwwae]{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-gtwmwwae] button[data-astro-cid-gtwmwwae].active{background:#16213e;color:#fff;border-color:#e94560}.section[data-astro-cid-gtwmwwae]{display:none;width:100%}.section[data-astro-cid-gtwmwwae].active{display:flex;flex-direction:column;align-items:center;gap:16px}.learn-step[data-astro-cid-gtwmwwae]{display:none}.learn-step[data-astro-cid-gtwmwwae].active{display:block}.step-nav[data-astro-cid-gtwmwwae]{display:flex;gap:12px;align-items:center}.step-nav[data-astro-cid-gtwmwwae] button[data-astro-cid-gtwmwwae],.check-btn[data-astro-cid-gtwmwwae]{padding:10px 22px;border-radius:10px;font-size:1rem;cursor:pointer;border:2px solid #e94560;background:transparent;color:#e94560}.step-nav[data-astro-cid-gtwmwwae] button[data-astro-cid-gtwmwwae]:hover,.check-btn[data-astro-cid-gtwmwwae]:hover{background:#e94560;color:#fff}.feedback[data-astro-cid-gtwmwwae]{min-height:1.5em;font-size:1.15rem;font-weight:700;text-align:center}.feedback[data-astro-cid-gtwmwwae].correct{color:#4ecdc4}.feedback[data-astro-cid-gtwmwwae].wrong{color:#ffd166}.insight[data-astro-cid-gtwmwwae]{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}.visual-panel[data-astro-cid-gtwmwwae]{width:100%;min-height:80px}.learn-text[data-astro-cid-gtwmwwae]{font-size:1.1rem;text-align:center;color:#eef2ff}.step-count[data-astro-cid-gtwmwwae]{color:#8d99b8;font-size:.95rem}.controls[data-astro-cid-gtwmwwae]{display:flex;gap:10px;align-items:center;color:#8d99b8}.controls[data-astro-cid-gtwmwwae] label[data-astro-cid-gtwmwwae]{min-width:130px}.controls[data-astro-cid-gtwmwwae] .value[data-astro-cid-gtwmwwae]{min-width:24px;text-align:right;color:#eef2ff;font-weight:700}.explanation[data-astro-cid-gtwmwwae]{color:#eef2ff;font-size:1.05rem;text-align:center}.score-bar[data-astro-cid-gtwmwwae]{display:flex;justify-content:space-between;width:100%;font-size:.95rem;color:#8d99b8}.score-bar[data-astro-cid-gtwmwwae] .correct[data-astro-cid-gtwmwwae]{color:#4ecdc4;font-weight:700}.question-card[data-astro-cid-gtwmwwae]{font-size:1.2rem;color:#eef2ff;text-align:center;padding:12px}.input-row[data-astro-cid-gtwmwwae]{display:flex;gap:12px;align-items:center;justify-content:center;flex-wrap:wrap;width:min(100%,620px)}.fraction-input[data-astro-cid-gtwmwwae]{width:clamp(96px,18vw,116px);min-height:56px;padding:10px 12px;border-radius:12px;border:2px solid #444;background:#16213e;color:#eef2ff;font-size:1.2rem;font-weight:700;text-align:center}.frac-slash[data-astro-cid-gtwmwwae]{font-size:2rem;color:#eef2ff}.button-row[data-astro-cid-gtwmwwae]{display:flex;gap:12px;align-items:center;justify-content:center;flex-wrap:wrap;width:min(100%,620px)}.tiny-note[data-astro-cid-gtwmwwae]{font-size:.85rem;color:#8d99b8;text-align:center}@media(max-width:600px){.controls[data-astro-cid-gtwmwwae]{flex-direction:column;gap:8px;align-items:stretch}.controls[data-astro-cid-gtwmwwae] label[data-astro-cid-gtwmwwae]{text-align:center;font-size:.9rem}.controls[data-astro-cid-gtwmwwae] input[data-astro-cid-gtwmwwae][type=range]{width:100%}.controls[data-astro-cid-gtwmwwae] .value[data-astro-cid-gtwmwwae]{text-align:center;font-size:1.2rem}.tab-bar[data-astro-cid-gtwmwwae]{gap:2px}.tab-bar[data-astro-cid-gtwmwwae] button[data-astro-cid-gtwmwwae]{padding:8px 12px;font-size:.85rem}.mode-toggle[data-astro-cid-gtwmwwae] button[data-astro-cid-gtwmwwae]{padding:6px 14px;font-size:.9rem}.challenge-prompt[data-astro-cid-gtwmwwae]{font-size:1.05rem;padding:12px 14px}.challenge-prompt[data-astro-cid-gtwmwwae] strong[data-astro-cid-gtwmwwae]{font-size:1.15rem}.step-nav[data-astro-cid-gtwmwwae]{gap:8px}.step-nav[data-astro-cid-gtwmwwae] button[data-astro-cid-gtwmwwae]{padding:8px 14px;font-size:.85rem}.fraction-label[data-astro-cid-gtwmwwae]{font-size:1.8rem}.score-bar[data-astro-cid-gtwmwwae]{flex-wrap:wrap;gap:8px;font-size:.85rem;justify-content:center}.check-btn[data-astro-cid-gtwmwwae]{padding:10px 28px;font-size:1rem}.explanation[data-astro-cid-gtwmwwae]{font-size:.95rem}.feedback[data-astro-cid-gtwmwwae]{font-size:1rem}.insight[data-astro-cid-gtwmwwae]{font-size:.95rem;padding:12px 16px}.learn-text[data-astro-cid-gtwmwwae]{font-size:1rem}.canvas-wrapper[data-astro-cid-gtwmwwae]{border-radius:12px}}