.tutor-thinking{color:var(--muted);font-weight:700}.tutor-thinking .dots{animation:tutor-blink 1.2s ease-in-out infinite}@keyframes tutor-blink{0%,to{opacity:.25}50%{opacity:1}}.tutor-again{margin-top:6px;background:#eef6ff;color:#2563eb;border:2px solid #cfe3ff;font-weight:700;padding:6px 12px;border-radius:999px;cursor:pointer;font-size:.85rem}.tutor-again:hover{background:#e0eeff}.lesson-card{position:relative;overflow:hidden}.lesson-header,.lesson-body,.lesson-trail{position:relative;z-index:1}.lesson-theme{position:absolute;top:0;right:0;bottom:0;left:0;opacity:.09;z-index:0;pointer-events:none}.lesson-theme-decor{position:absolute;font-size:2.4rem;transform:translate(-50%,-50%)}.lesson-trail{display:flex;align-items:center;justify-content:center;gap:4px;margin-bottom:12px;font-size:1.2rem}.trail-paw{opacity:.3;filter:grayscale(.6);transition:opacity .2s ease,transform .2s ease}.trail-paw.done{opacity:1;filter:none}.trail-paw.now{opacity:1;filter:none;transform:scale(1.3)}.trail-chest{margin-left:4px;font-size:1.4rem}.trail-chest.now{animation:bob 1s ease-in-out infinite}.trail-star{position:absolute;font-size:1.4rem;animation:floatUp 1s ease-out forwards;pointer-events:none}.lesson-costar{position:absolute;top:52px;right:8px;width:58px;z-index:2;text-align:center;pointer-events:none;opacity:.96}.lesson-costar-pet{transform:scale(.4);transform-origin:top center;height:74px}.lesson-costar-pet.cheer{animation:costar-cheer .5s ease}@keyframes costar-cheer{0%,to{transform:scale(.5) translateY(0)}40%{transform:scale(.58) translateY(-8px)}}.lesson-bubble{background:#fff;border:2px solid #e2ddfb;border-radius:12px;padding:3px 8px;font-size:.72rem;font-weight:800;color:var(--accent);box-shadow:0 3px 8px #14143c24;margin-top:-8px}.lesson-widget{text-align:center}.lesson-prompt{font-size:1.35rem;font-weight:800;color:var(--ink);margin:4px 0 16px;line-height:1.35}.lesson-widget .feedback{font-size:1.35rem;line-height:1.6;max-width:600px;margin:18px auto 0}.lesson-widget .feedback.correct{font-size:1.45rem}.lesson-widget .feedback.hint{display:flex;gap:16px;align-items:flex-start;text-align:left;max-width:620px;margin:20px auto 0;padding:24px 28px;font-size:1.45rem;font-weight:600;line-height:1.75;color:#7a5512;background:#fff8e1;border:2px solid #f3d27d;border-radius:20px}.lesson-widget .feedback.hint:before{content:"💡";font-size:1.9rem;line-height:1.3;flex:0 0 auto}.lesson-widget .feedback.wrong{font-weight:700;color:#9a3b30}.lesson-widget .lesson-primary.lesson-choice-next{max-width:300px;padding:12px 16px;font-size:1rem;color:var(--accent);background:#fff;border:2px solid var(--accent);animation:choice-next-in .42s ease both}@keyframes choice-next-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.worked-widget .worked-problem{margin:4px 0 14px}.worked-lines{max-width:560px;margin:0 auto 18px;text-align:left}.worked-line{display:flex;align-items:flex-start;gap:12px;margin:0 0 10px;padding:12px 16px;background:#f7f5ff;border:2px solid #e2ddfb;border-radius:14px;color:var(--ink);font-size:1.15rem;font-weight:600;line-height:1.5;animation:choice-next-in .3s ease both}.worked-step-num{flex:0 0 auto;display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;font-size:.85rem;font-weight:800}.lesson-hint{font-size:.85rem;color:var(--muted);font-weight:700;margin:10px 0 0}.lesson-chant{font-weight:800;color:#b45309;background:#fff6e0;border-radius:12px;padding:8px 12px;margin:10px 0 0}.lesson-speak-row{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:12px}.nl-track{position:relative;height:78px;margin:28px 12px 8px}.nl-line{position:absolute;left:0;right:0;top:50%;height:6px;border-radius:999px;background:linear-gradient(90deg,#7c6bf0,#38bdf8)}.nl-zero{position:absolute;top:calc(50% - 16px);height:32px;width:3px;transform:translate(-50%);background:var(--ink);opacity:.35;border-radius:999px}.nl-tick{position:absolute;top:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center}.nl-tick-dot{width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--accent)}.nl-tick-label{margin-top:4px;font-weight:800;color:var(--ink)}.nl-marker{position:absolute;top:8px;transform:translate(-50%);font-size:1.6rem;transition:left .5s cubic-bezier(.3,1.5,.6,1)}.nl-target-label{position:absolute;top:-14px;transform:translate(-50%);font-weight:900;color:var(--accent)}.nl-options{display:flex;gap:14px;justify-content:center;margin-top:8px}.nl-options .choice-btn{min-width:88px;padding:16px}.groups-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin:8px 0 12px}.group-basket{display:grid;grid-template-columns:repeat(2,1fr);gap:2px;place-content:center;min-width:78px;min-height:78px;padding:8px;border-radius:16px;border:3px dashed #e2ddfb;background:#faf9ff;cursor:pointer}.group-basket.full{border-style:solid;border-color:var(--accent);background:#f4f2ff;cursor:default}.group-basket:disabled{cursor:default}.group-obj{font-size:1.5rem;animation:pop .3s ease}.group-add{grid-column:1 / -1;font-size:2rem;color:var(--accent);font-weight:900}.parts{display:flex;justify-content:center;gap:3px;margin:10px auto;max-width:280px}.parts.bar{height:64px}.parts.pizza{width:170px;height:170px;border-radius:50%;overflow:hidden;gap:2px;background:#fff;box-shadow:0 6px 16px #14143c26}.part-slice{flex:1;border:none;background:#fff3d6;cursor:pointer;transition:background .15s ease,transform .1s ease}.parts.bar .part-slice{border-radius:8px;border:2px solid #f1c97a}.part-slice.on{background:linear-gradient(180deg,#fbbf24,#f59e0b)}.part-slice:active:not(:disabled){transform:scale(.96)}.sort-items{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;min-height:44px;margin-bottom:14px}.sort-item{padding:10px 16px;border-radius:12px;border:3px solid #e2ddfb;background:#f4f2ff;color:var(--accent);font-weight:800;font-size:1.05rem;cursor:pointer}.sort-item.sel{background:var(--accent);color:#fff;transform:translateY(-2px)}.sort-empty{color:var(--good);font-weight:800;align-self:center}.sort-bins{display:flex;gap:12px;justify-content:center}.sort-bin{flex:1;max-width:200px;min-height:90px;padding:10px;border-radius:16px;border:3px dashed #cbd5e1;background:#f8fafc;cursor:default}.sort-bin.armed{border-color:var(--accent);background:#f4f2ff;cursor:pointer}.sort-bin-label{display:block;font-weight:800;color:var(--ink);margin-bottom:6px}.sort-bin-items{display:flex;flex-wrap:wrap;gap:4px;justify-content:center}.sort-chip{background:#fff;border:2px solid var(--accent);border-radius:999px;padding:2px 9px;font-weight:800;font-size:.85rem;color:var(--accent);animation:pop .3s ease}.order-built{display:flex;gap:6px;justify-content:center;align-items:center;min-height:50px;margin-bottom:12px}.order-placeholder{color:var(--muted);font-weight:700}.order-slot.filled{min-width:44px;padding:10px;border-radius:12px;background:var(--accent);color:#fff;font-weight:800;animation:pop .3s ease}.order-pool{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.order-tile{min-width:64px;padding:16px}.order-tile.used{opacity:.25}.match-cols{display:flex;gap:22px;justify-content:center}.match-col{display:flex;flex-direction:column;gap:10px;flex:1;max-width:180px}.match-cell{padding:14px;border-radius:14px;border:3px solid #e2ddfb;background:#f4f2ff;color:var(--accent);font-weight:800;font-size:1.2rem;cursor:pointer;transition:transform .08s ease,background .12s ease}.match-cell.sel{background:var(--accent);color:#fff}.match-cell.done{border-color:var(--good);background:#dcfce7;color:#16a34a;cursor:default}.match-cell-rect{display:flex;align-items:center;justify-content:center;padding:10px}.match-rect{display:inline-grid;gap:2px}.match-rect-cell{width:14px;height:14px;background:#93c5fd;border:1px solid #3b82f6;border-radius:2px}.match-cell-rect.sel .match-rect-cell{background:#fff;border-color:#fff}.match-cell-rect.done .match-rect-cell{background:#86efac;border-color:#16a34a}.build-slots{display:flex;gap:6px;justify-content:center;margin:8px 0 16px}.build-slot{width:44px;height:52px;border-radius:10px;border:3px solid #e2ddfb;background:#faf9ff;display:flex;align-items:center;justify-content:center;font-size:1.6rem;font-weight:800;color:var(--ink);text-transform:uppercase}.build-slot.filled{border-color:var(--accent);background:#f4f2ff}.build-tiles{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:8px}.build-tile{min-width:52px;padding:14px 0;text-transform:uppercase}.build-tile.used{opacity:.25}.judge-claim{display:flex;align-items:center;gap:10px;justify-content:center;background:#f5f3ff;border:2px solid #e2ddfb;border-radius:16px;padding:16px;margin:6px auto 16px;max-width:360px}.judge-bot{font-size:2rem}.judge-text{font-size:1.5rem;font-weight:800;color:var(--ink)}.judge-btns{display:flex;gap:14px;justify-content:center}.judge-btns .choice-btn{font-size:1.1rem;min-width:130px}.judge-yes{background:#dcfce7;border-color:#86efac;color:#16a34a}.judge-no{background:#fee2e2;border-color:#fca5a5;color:#dc2626}.choice-progress{font-weight:800;color:var(--muted);font-size:.85rem;margin-bottom:6px}.lesson-choice-problem{margin:6px 0 18px}.problem.problem-story{max-width:560px;margin:6px auto 18px;font-size:1.3rem;line-height:1.4;letter-spacing:0}.lesson-chest{font-size:5rem;background:none;border:none;cursor:pointer;animation:bob 1.2s ease-in-out infinite;filter:drop-shadow(0 8px 10px rgba(0,0,0,.25))}.lesson-chest:hover{transform:scale(1.08)}.lesson-chest-hint{color:var(--muted);font-weight:800;margin-top:6px}.count-stage{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;align-items:center;min-height:70px;margin:10px auto 14px;max-width:360px}.count-obj{font-size:2.4rem;line-height:1;border:none;background:none;padding:2px;transition:opacity .25s ease,transform .25s ease,filter .25s ease}.count-obj.tappable{cursor:pointer;border-radius:12px}.count-obj.tappable:hover:not(:disabled){transform:translateY(-3px) scale(1.08);background:#fff7e0}.count-obj.eaten{opacity:.18;filter:grayscale(1);transform:scale(.6)}.count-obj.added{animation:pop .35s ease}.count-stage.settled .count-obj{animation:pop .3s ease}.count-counter{font-weight:800;color:var(--muted);margin:0 0 6px}.count-add-btn{font-weight:800;color:var(--accent);background:#f4f2ff;border:3px solid #e2ddfb;border-radius:14px;padding:12px 20px;cursor:pointer;font-size:1.05rem}.count-add-btn:hover:not(:disabled){background:#e9e4ff;transform:translateY(-2px)}.count-add-btn:disabled{opacity:.5;cursor:default}.count-choices{max-width:360px;margin:4px auto 0}.count-result{font-size:1.15rem;font-weight:800;color:var(--accent);background:#f4f2ff;border-radius:14px;padding:12px 16px;margin:4px auto 16px;max-width:360px}.plot-bars{display:flex;align-items:flex-end;justify-content:center;gap:14px;height:160px;max-width:420px;margin:8px auto 16px;padding:8px 8px 0;border-bottom:3px solid #e2ddfb}.plot-col{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;flex:1;max-width:56px}.plot-bar{width:100%;background:var(--accent);border-radius:8px 8px 0 0;min-height:4px;transition:height .3s ease}.plot-val{font-weight:800;color:var(--accent);font-size:.95rem;margin-bottom:4px}.plot-label{font-weight:700;color:var(--muted);font-size:.85rem;margin-top:6px}.plot-dots{display:flex;align-items:flex-end;justify-content:center;gap:10px;max-width:420px;margin:8px auto 16px;padding:8px 8px 0;border-bottom:3px solid #e2ddfb}.plot-dotcol{display:flex;flex-direction:column;align-items:center;flex:1;max-width:44px}.plot-dotstack{display:flex;flex-direction:column-reverse;align-items:center;min-height:18px}.plot-dot{color:var(--accent);font-size:1.1rem;line-height:1}.grid-svg{display:block;width:280px;max-width:80vw;height:auto;margin:8px auto 12px;touch-action:manipulation}.grid-line{stroke:#e7e2fb;stroke-width:1}.grid-axis{stroke:var(--ink);stroke-width:2;opacity:.45}.grid-dot{fill:#c7bdf6}.grid-hit{fill:transparent;cursor:pointer}.grid-hit:hover{fill:#7c6bf038}.grid-marker{font-size:18px}.quests-subhead{margin:24px 0 2px;font-size:1.15rem;font-weight:800;color:var(--ink)}.quest-card.practice{border-style:dashed}.quest-practice-tag{font-size:.72rem;font-weight:800;color:var(--muted);background:#eef1f7;padding:4px 10px;border-radius:999px;white-space:nowrap}.slides-widget{text-align:center}.slides-stage{display:flex;align-items:center;justify-content:center;min-height:170px;margin:6px auto 10px}.slide-expr{display:flex;flex-direction:column;align-items:center;gap:6px}.se-big{font-size:4rem;font-weight:900;color:var(--accent);line-height:1;animation:pop .4s ease both}.se-line{font-size:1.6rem;font-weight:800;color:var(--ink);animation:pop .4s ease .5s both}.se-result{font-size:2rem;font-weight:900;color:var(--good);animation:pop .4s ease 1s both}.slide-array{display:inline-grid;gap:6px}.slide-array-cell{font-size:2.4rem;line-height:1;animation:pop .3s ease both}.slide-text{display:flex;flex-direction:column;gap:8px}.slide-headline{font-size:2.4rem;font-weight:900;color:var(--accent)}.slide-line{font-size:1.45rem;font-weight:700;color:var(--ink)}.slides-caption{font-size:1.5rem;font-weight:700;line-height:1.5;color:var(--ink);max-width:540px;margin:6px auto 16px;min-height:2.6em}.slides-controls{display:flex;flex-direction:column;align-items:center;gap:12px}.slides-audio-ctrls{display:flex;gap:10px;align-items:center;justify-content:center}.slides-ctrl{width:46px;height:46px;border-radius:50%;border:2px solid #e2ddfb;background:#f4f2ff;font-size:1.1rem;cursor:pointer;transition:transform .08s ease,background .12s ease}.slides-ctrl:hover{background:#e9e4ff;transform:translateY(-1px)}.slides-next{width:auto;max-width:none;margin:0;display:inline-block;padding:13px 26px}.slides-dots{display:flex;gap:6px;justify-content:center;margin-top:14px}.slides-dot{width:9px;height:9px;border-radius:50%;background:#e2ddfb}.slides-dot.done{background:var(--accent);opacity:.5}.slides-dot.on{background:var(--accent);transform:scale(1.3)}.slide-frac{display:flex;flex-direction:column;align-items:center;gap:10px}.slide-frac-bar{display:flex;gap:3px;width:260px;max-width:70vw;height:56px}.slide-frac-part{flex:1;border:3px solid #f1c97a;border-radius:8px;background:#fff3d6;animation:pop .3s ease both}.slide-frac-part.on{background:linear-gradient(180deg,#fbbf24,#f59e0b)}.slide-numline{position:relative;width:300px;max-width:80vw;height:70px;margin:18px auto 0}.slide-numline-line{position:absolute;left:0;right:0;top:50%;height:6px;border-radius:999px;background:linear-gradient(90deg,#7c6bf0,#38bdf8)}.slide-numline-tick{position:absolute;top:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center}.slide-numline-dot{width:12px;height:12px;border-radius:50%;background:#fff;border:3px solid var(--accent)}.slide-numline-label{margin-top:4px;font-weight:800;color:var(--ink);font-size:.9rem}.slide-numline-point{position:absolute;top:-2px;transform:translate(-50%);font-size:1.5rem}.slides-word{border-radius:6px;padding:0 1px;transition:color .1s ease,background .1s ease}.slides-word.on{color:var(--accent);background:#efeaff}