WindopEdu \u2014 BODMAS & \u0d2a\u0d42\u0d7c\u0d23\u0d4d\u0d23\u0d38\u0d02\u0d16\u0d4d\u0d2f\u0d15\u0d7e<\/title>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Noto+Sans+Malayalam:wght@400;600;700;900&family=Space+Mono:wght@400;700&display=swap\" rel=\"stylesheet\">\n<style>\n :root {\n --navy: #0d1b2a;\n --navy2: #132337;\n --navy3: #1a3050;\n --gold: #f4b942;\n --gold2: #ffd166;\n --teal: #06d6a0;\n --teal2: #0ac4a0;\n --red: #ef476f;\n --white: #f0f4f8;\n --text: #e8edf2;\n --muted: #7a9ab8;\n --card: rgba(255,255,255,0.06);\n --border: rgba(255,255,255,0.1);\n }\n\n * { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; }\n\n body {\n background: var(--navy);\n color: var(--text);\n font-family: 'Noto Sans Malayalam', sans-serif;\n min-height: 100vh;\n overflow-x: hidden;\n position: relative;\n }\n\n \/* Math symbols background *\/\n body::before {\n content: '';\n position: fixed;\n inset: 0;\n background-image: \n radial-gradient(ellipse at 20% 20%, rgba(6,214,160,0.08) 0%, transparent 60%),\n radial-gradient(ellipse at 80% 80%, rgba(244,185,66,0.07) 0%, transparent 60%);\n pointer-events: none;\n z-index: 0;\n }\n\n .math-bg {\n position: fixed;\n inset: 0;\n pointer-events: none;\n z-index: 0;\n overflow: hidden;\n opacity: 0.05;\n font-family: 'Space Mono', monospace;\n font-size: 1.4rem;\n color: var(--teal);\n display: flex;\n flex-wrap: wrap;\n gap: 28px;\n padding: 20px;\n align-content: flex-start;\n }\n\n #windopedu-app {\n position: relative;\n z-index: 1;\n max-width: 480px;\n margin: 0 auto;\n min-height: 100vh;\n display: flex;\n flex-direction: column;\n }\n\n \/* \u2500\u2500 SCREENS \u2500\u2500 *\/\n .screen { display: none; flex-direction: column; min-height: 100vh; padding: 20px 16px; animation: fadeIn 0.35s ease; }\n .screen.active { display: flex; }\n @keyframes fadeIn { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }\n\n \/* \u2500\u2500 HEADER \u2500\u2500 *\/\n .app-header {\n display: flex;\n align-items: center;\n justify-content: space-between;\n padding: 12px 0 20px;\n }\n\n .logo {\n font-family: 'Space Mono', monospace;\n font-weight: 700;\n font-size: 1.1rem;\n color: var(--gold);\n letter-spacing: 0.05em;\n }\n\n .logo span { color: var(--teal); }\n\n .hud {\n display: flex;\n gap: 10px;\n align-items: center;\n }\n\n .xp-badge {\n background: linear-gradient(135deg, var(--gold), #e8a020);\n color: var(--navy);\n font-family: 'Space Mono', monospace;\n font-weight: 700;\n font-size: 0.75rem;\n padding: 5px 10px;\n border-radius: 20px;\n letter-spacing: 0.03em;\n }\n\n .streak-badge {\n background: rgba(239,71,111,0.18);\n border: 1px solid rgba(239,71,111,0.4);\n color: #ff6b9d;\n font-size: 0.8rem;\n padding: 5px 10px;\n border-radius: 20px;\n font-family: 'Space Mono', monospace;\n }\n\n \/* \u2500\u2500 HOME SCREEN \u2500\u2500 *\/\n .hero-card {\n background: linear-gradient(135deg, var(--navy3), #0d2a3d);\n border: 1px solid var(--border);\n border-radius: 20px;\n padding: 28px 22px;\n margin-bottom: 24px;\n position: relative;\n overflow: hidden;\n }\n\n .hero-card::before {\n content: 'BODMAS';\n position: absolute;\n right: -10px;\n top: 50%;\n transform: translateY(-50%);\n font-family: 'Space Mono', monospace;\n font-size: 5rem;\n font-weight: 700;\n color: rgba(6,214,160,0.06);\n letter-spacing: -0.05em;\n line-height: 1;\n }\n\n .session-tag {\n font-family: 'Space Mono', monospace;\n font-size: 0.65rem;\n color: var(--teal);\n letter-spacing: 0.15em;\n text-transform: uppercase;\n margin-bottom: 8px;\n opacity: 0.9;\n }\n\n .hero-title {\n font-size: 1.5rem;\n font-weight: 900;\n line-height: 1.3;\n color: var(--white);\n margin-bottom: 6px;\n }\n\n .hero-sub {\n font-size: 0.9rem;\n color: var(--muted);\n line-height: 1.6;\n }\n\n .progress-row {\n display: flex;\n align-items: center;\n gap: 10px;\n margin-top: 18px;\n }\n\n .progress-bar {\n flex: 1;\n height: 6px;\n background: rgba(255,255,255,0.1);\n border-radius: 3px;\n overflow: hidden;\n }\n\n .progress-fill {\n height: 100%;\n background: linear-gradient(90deg, var(--teal), var(--gold));\n border-radius: 3px;\n transition: width 0.5s ease;\n }\n\n .progress-label {\n font-family: 'Space Mono', monospace;\n font-size: 0.7rem;\n color: var(--muted);\n }\n\n \/* \u2500\u2500 SECTION HEADING \u2500\u2500 *\/\n .section-label {\n font-family: 'Space Mono', monospace;\n font-size: 0.65rem;\n letter-spacing: 0.2em;\n text-transform: uppercase;\n color: var(--muted);\n margin-bottom: 12px;\n padding-left: 2px;\n }\n\n \/* \u2500\u2500 ACTIVITY CARDS (Home) \u2500\u2500 *\/\n .activity-grid {\n display: flex;\n flex-direction: column;\n gap: 10px;\n margin-bottom: 24px;\n }\n\n .act-card {\n background: var(--card);\n border: 1px solid var(--border);\n border-radius: 14px;\n padding: 16px 18px;\n display: flex;\n align-items: center;\n gap: 14px;\n cursor: pointer;\n transition: all 0.2s ease;\n position: relative;\n overflow: hidden;\n min-height: 72px;\n }\n\n .act-card:active { transform: scale(0.97); }\n .act-card:hover { border-color: rgba(255,255,255,0.2); background: rgba(255,255,255,0.09); }\n\n .act-card.concept { border-left: 3px solid #4cc9f0; }\n .act-card.speed { border-left: 3px solid var(--gold); }\n .act-card.accuracy { border-left: 3px solid var(--teal); }\n .act-card.done { opacity: 0.55; }\n\n .act-icon {\n width: 48px;\n height: 48px;\n border-radius: 12px;\n display: flex;\n align-items: center;\n justify-content: center;\n font-size: 1.5rem;\n flex-shrink: 0;\n }\n\n .concept .act-icon { background: rgba(76,201,240,0.12); }\n .speed .act-icon { background: rgba(244,185,66,0.12); }\n .accuracy .act-icon { background: rgba(6,214,160,0.12); }\n\n .act-info { flex: 1; }\n\n .act-name {\n font-weight: 700;\n font-size: 0.95rem;\n color: var(--white);\n margin-bottom: 3px;\n }\n\n .act-desc {\n font-size: 0.78rem;\n color: var(--muted);\n line-height: 1.4;\n }\n\n .act-xp {\n font-family: 'Space Mono', monospace;\n font-size: 0.7rem;\n font-weight: 700;\n color: var(--gold);\n background: rgba(244,185,66,0.1);\n padding: 3px 8px;\n border-radius: 10px;\n }\n\n .act-done-mark {\n position: absolute;\n top: 8px;\n right: 10px;\n font-size: 0.7rem;\n color: var(--teal);\n font-family: 'Space Mono', monospace;\n }\n\n \/* \u2500\u2500 BUTTONS \u2500\u2500 *\/\n .btn {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 8px;\n padding: 16px 24px;\n border-radius: 14px;\n border: none;\n font-family: 'Noto Sans Malayalam', sans-serif;\n font-size: 1rem;\n font-weight: 700;\n cursor: pointer;\n transition: all 0.2s ease;\n min-height: 52px;\n width: 100%;\n position: relative;\n overflow: hidden;\n }\n\n .btn-primary {\n background: linear-gradient(135deg, var(--teal), #04c592);\n color: var(--navy);\n }\n\n .btn-primary:active { transform: scale(0.97); }\n\n .btn-gold {\n background: linear-gradient(135deg, var(--gold), #e8a020);\n color: var(--navy);\n }\n\n .btn-outline {\n background: transparent;\n border: 1.5px solid var(--border);\n color: var(--text);\n }\n\n .btn-outline:hover { border-color: rgba(255,255,255,0.3); }\n\n .btn:active { transform: scale(0.97); }\n\n \/* \u2500\u2500 BACK BUTTON \u2500\u2500 *\/\n .back-btn {\n background: none;\n border: none;\n color: var(--muted);\n font-size: 1.4rem;\n cursor: pointer;\n padding: 8px;\n margin-left: -8px;\n display: flex;\n align-items: center;\n gap: 6px;\n font-family: 'Noto Sans Malayalam', sans-serif;\n font-size: 0.85rem;\n }\n\n \/* \u2500\u2500 ACTIVITY SCREEN \u2500\u2500 *\/\n .act-header {\n display: flex;\n align-items: center;\n gap: 12px;\n margin-bottom: 24px;\n }\n\n .act-title-block { flex: 1; }\n\n .act-screen-name {\n font-family: 'Space Mono', monospace;\n font-size: 0.65rem;\n letter-spacing: 0.15em;\n text-transform: uppercase;\n margin-bottom: 4px;\n }\n\n .act-screen-name.concept { color: #4cc9f0; }\n .act-screen-name.speed { color: var(--gold); }\n .act-screen-name.accuracy { color: var(--teal); }\n\n .act-screen-title {\n font-size: 1.1rem;\n font-weight: 800;\n color: var(--white);\n }\n\n .q-counter {\n font-family: 'Space Mono', monospace;\n font-size: 0.75rem;\n color: var(--muted);\n background: var(--card);\n border: 1px solid var(--border);\n padding: 6px 12px;\n border-radius: 20px;\n }\n\n \/* \u2500\u2500 QUESTION CARD \u2500\u2500 *\/\n .q-card {\n background: var(--card);\n border: 1px solid var(--border);\n border-radius: 18px;\n padding: 22px 20px;\n margin-bottom: 20px;\n }\n\n .q-label {\n font-family: 'Space Mono', monospace;\n font-size: 0.65rem;\n letter-spacing: 0.12em;\n text-transform: uppercase;\n color: var(--muted);\n margin-bottom: 10px;\n }\n\n .q-text {\n font-size: 1.05rem;\n font-weight: 600;\n line-height: 1.65;\n color: var(--white);\n }\n\n .q-math {\n font-family: 'Space Mono', monospace;\n font-size: 1.15rem;\n color: var(--gold2);\n margin: 10px 0;\n line-height: 1.6;\n }\n\n \/* \u2500\u2500 OPTIONS \u2500\u2500 *\/\n .options-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 10px;\n margin-bottom: 16px;\n }\n\n .opt-btn {\n background: var(--card);\n border: 1.5px solid var(--border);\n border-radius: 14px;\n padding: 16px 12px;\n color: var(--text);\n font-family: 'Space Mono', monospace;\n font-size: 0.95rem;\n font-weight: 700;\n cursor: pointer;\n transition: all 0.2s ease;\n min-height: 60px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n overflow: hidden;\n }\n\n .opt-btn:active { transform: scale(0.96); }\n\n .opt-btn.selected { border-color: var(--teal); background: rgba(6,214,160,0.12); color: var(--teal); }\n .opt-btn.correct { border-color: var(--teal); background: rgba(6,214,160,0.2); color: var(--teal); }\n .opt-btn.wrong { border-color: var(--red); background: rgba(239,71,111,0.15); color: var(--red); }\n .opt-btn:disabled { cursor: default; }\n\n .opt-btn::before {\n content: attr(data-label);\n position: absolute;\n top: 6px;\n left: 8px;\n font-size: 0.55rem;\n color: var(--muted);\n letter-spacing: 0.05em;\n }\n\n \/* \u2500\u2500 FEEDBACK CARD \u2500\u2500 *\/\n .feedback-card {\n border-radius: 14px;\n padding: 16px 18px;\n margin-bottom: 16px;\n display: none;\n animation: slideUp 0.3s ease;\n }\n\n .feedback-card.show { display: block; }\n @keyframes slideUp { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }\n\n .feedback-card.correct { background: rgba(6,214,160,0.1); border: 1px solid rgba(6,214,160,0.3); }\n .feedback-card.wrong { background: rgba(239,71,111,0.1); border: 1px solid rgba(239,71,111,0.3); }\n\n .feedback-title {\n font-weight: 800;\n font-size: 0.95rem;\n margin-bottom: 6px;\n }\n\n .feedback-card.correct .feedback-title { color: var(--teal); }\n .feedback-card.wrong .feedback-title { color: var(--red); }\n\n .feedback-text {\n font-size: 0.85rem;\n line-height: 1.65;\n color: var(--text);\n }\n\n .step-list {\n margin-top: 8px;\n display: flex;\n flex-direction: column;\n gap: 4px;\n }\n\n .step-item {\n font-family: 'Space Mono', monospace;\n font-size: 0.8rem;\n color: var(--gold2);\n padding: 4px 0;\n border-bottom: 1px solid rgba(255,255,255,0.06);\n }\n\n \/* \u2500\u2500 TRUE\/FALSE SWIPE \u2500\u2500 *\/\n .tf-card {\n background: linear-gradient(135deg, var(--navy3), #0d2a3d);\n border: 1px solid var(--border);\n border-radius: 20px;\n padding: 28px 22px;\n margin-bottom: 20px;\n text-align: center;\n }\n\n .tf-statement {\n font-size: 1.05rem;\n font-weight: 700;\n line-height: 1.6;\n color: var(--white);\n margin-bottom: 6px;\n }\n\n .tf-math {\n font-family: 'Space Mono', monospace;\n font-size: 1.1rem;\n color: var(--gold2);\n margin: 10px 0;\n }\n\n .tf-buttons {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 12px;\n margin-top: 20px;\n }\n\n .tf-btn {\n padding: 18px;\n border-radius: 14px;\n border: 2px solid;\n font-family: 'Noto Sans Malayalam', sans-serif;\n font-size: 1.05rem;\n font-weight: 800;\n cursor: pointer;\n transition: all 0.2s ease;\n min-height: 60px;\n }\n\n .tf-btn.true-btn { border-color: var(--teal); color: var(--teal); background: rgba(6,214,160,0.08); }\n .tf-btn.false-btn { border-color: var(--red); color: var(--red); background: rgba(239,71,111,0.08); }\n .tf-btn:active { transform: scale(0.96); }\n .tf-btn.selected-correct { background: rgba(6,214,160,0.25); }\n .tf-btn.selected-wrong { background: rgba(239,71,111,0.25); }\n\n \/* \u2500\u2500 STEP SORTER \u2500\u2500 *\/\n .steps-container {\n display: flex;\n flex-direction: column;\n gap: 8px;\n margin-bottom: 16px;\n }\n\n .step-drag {\n background: var(--card);\n border: 1.5px solid var(--border);\n border-radius: 12px;\n padding: 14px 16px;\n display: flex;\n align-items: center;\n gap: 12px;\n cursor: grab;\n user-select: none;\n font-size: 0.88rem;\n line-height: 1.5;\n color: var(--text);\n transition: all 0.2s;\n }\n\n .step-drag.dragging { opacity: 0.5; border-style: dashed; }\n .step-drag.over { border-color: var(--teal); background: rgba(6,214,160,0.08); }\n\n .drag-handle {\n color: var(--muted);\n font-size: 1.1rem;\n flex-shrink: 0;\n }\n\n .step-num {\n font-family: 'Space Mono', monospace;\n font-size: 0.75rem;\n font-weight: 700;\n color: var(--navy);\n background: var(--muted);\n width: 24px;\n height: 24px;\n border-radius: 50%;\n display: flex;\n align-items: center;\n justify-content: center;\n flex-shrink: 0;\n }\n\n \/* \u2500\u2500 ERROR SPOTTER \u2500\u2500 *\/\n .err-steps {\n display: flex;\n flex-direction: column;\n gap: 8px;\n margin-bottom: 16px;\n }\n\n .err-step {\n background: var(--card);\n border: 1.5px solid var(--border);\n border-radius: 12px;\n padding: 14px 16px;\n cursor: pointer;\n transition: all 0.2s;\n display: flex;\n align-items: flex-start;\n gap: 10px;\n }\n\n .err-step:active { transform: scale(0.98); }\n .err-step.highlighted { border-color: var(--gold); background: rgba(244,185,66,0.08); }\n .err-step.wrong-pick { border-color: var(--red); background: rgba(239,71,111,0.1); animation: shake 0.3s ease; }\n .err-step.correct-pick { border-color: var(--teal); background: rgba(6,214,160,0.12); }\n\n @keyframes shake { 0%,100%{transform:translateX(0)} 25%{transform:translateX(-4px)} 75%{transform:translateX(4px)} }\n\n .err-step-num {\n font-family: 'Space Mono', monospace;\n font-size: 0.72rem;\n font-weight: 700;\n color: var(--muted);\n flex-shrink: 0;\n margin-top: 2px;\n }\n\n .err-step-content {\n font-family: 'Space Mono', monospace;\n font-size: 0.88rem;\n color: var(--text);\n line-height: 1.5;\n }\n\n \/* \u2500\u2500 RAPID FIRE \u2500\u2500 *\/\n .rf-timer {\n width: 80px;\n height: 80px;\n border-radius: 50%;\n border: 3px solid var(--border);\n display: flex;\n align-items: center;\n justify-content: center;\n margin: 0 auto 20px;\n position: relative;\n font-family: 'Space Mono', monospace;\n font-size: 1.6rem;\n font-weight: 700;\n color: var(--gold);\n }\n\n .rf-timer svg {\n position: absolute;\n inset: -3px;\n transform: rotate(-90deg);\n }\n\n .rf-timer circle {\n fill: none;\n stroke-width: 3;\n stroke-linecap: round;\n transition: stroke-dashoffset 1s linear, stroke 0.3s;\n }\n\n .rf-q {\n text-align: center;\n font-family: 'Space Mono', monospace;\n font-size: 1.8rem;\n font-weight: 700;\n color: var(--white);\n margin-bottom: 20px;\n }\n\n .rf-options {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 10px;\n }\n\n .rf-opt {\n background: var(--card);\n border: 1.5px solid var(--border);\n border-radius: 14px;\n padding: 18px;\n text-align: center;\n font-family: 'Space Mono', monospace;\n font-size: 1.1rem;\n font-weight: 700;\n color: var(--text);\n cursor: pointer;\n transition: all 0.15s ease;\n min-height: 60px;\n display: flex;\n align-items: center;\n justify-content: center;\n }\n\n .rf-opt:active { transform: scale(0.96); }\n .rf-opt.rf-correct { background: rgba(6,214,160,0.2); border-color: var(--teal); color: var(--teal); }\n .rf-opt.rf-wrong { background: rgba(239,71,111,0.15); border-color: var(--red); color: var(--red); }\n\n \/* \u2500\u2500 RESULT SCREEN \u2500\u2500 *\/\n .result-screen {\n text-align: center;\n padding: 30px 20px;\n flex: 1;\n display: flex;\n flex-direction: column;\n align-items: center;\n justify-content: center;\n }\n\n .result-emoji { font-size: 4rem; margin-bottom: 16px; }\n\n .result-title {\n font-size: 1.8rem;\n font-weight: 900;\n color: var(--gold);\n margin-bottom: 8px;\n }\n\n .result-sub {\n color: var(--muted);\n font-size: 0.9rem;\n line-height: 1.6;\n margin-bottom: 28px;\n }\n\n .result-stats {\n display: grid;\n grid-template-columns: repeat(3, 1fr);\n gap: 12px;\n width: 100%;\n margin-bottom: 28px;\n }\n\n .stat-box {\n background: var(--card);\n border: 1px solid var(--border);\n border-radius: 14px;\n padding: 16px 10px;\n text-align: center;\n }\n\n .stat-val {\n font-family: 'Space Mono', monospace;\n font-size: 1.5rem;\n font-weight: 700;\n margin-bottom: 4px;\n }\n\n .stat-val.gold { color: var(--gold); }\n .stat-val.teal { color: var(--teal); }\n .stat-val.red { color: var(--red); }\n\n .stat-label { font-size: 0.72rem; color: var(--muted); }\n\n \/* \u2500\u2500 CONFETTI \u2500\u2500 *\/\n #confetti-container {\n position: fixed;\n top: 0; left: 0; right: 0;\n pointer-events: none;\n z-index: 999;\n overflow: hidden;\n height: 100vh;\n }\n\n .confetti-piece {\n position: absolute;\n width: 8px;\n height: 12px;\n top: -20px;\n animation: fall linear forwards;\n border-radius: 2px;\n }\n\n @keyframes fall {\n to { transform: translateY(110vh) rotate(720deg); opacity: 0; }\n }\n\n \/* \u2500\u2500 TOAST \u2500\u2500 *\/\n .toast {\n position: fixed;\n bottom: 24px;\n left: 50%;\n transform: translateX(-50%) translateY(80px);\n background: var(--navy3);\n border: 1px solid var(--border);\n border-radius: 12px;\n padding: 12px 20px;\n font-size: 0.9rem;\n font-weight: 600;\n color: var(--white);\n z-index: 100;\n transition: transform 0.3s ease;\n white-space: nowrap;\n box-shadow: 0 8px 30px rgba(0,0,0,0.4);\n }\n\n .toast.show { transform: translateX(-50%) translateY(0); }\n\n \/* \u2500\u2500 XP POPUP \u2500\u2500 *\/\n .xp-popup {\n position: fixed;\n top: 50%;\n left: 50%;\n transform: translate(-50%, -50%) scale(0);\n background: linear-gradient(135deg, var(--gold), #e8a020);\n color: var(--navy);\n font-family: 'Space Mono', monospace;\n font-size: 1.5rem;\n font-weight: 700;\n padding: 16px 28px;\n border-radius: 16px;\n z-index: 200;\n pointer-events: none;\n box-shadow: 0 12px 40px rgba(244,185,66,0.4);\n transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.2s;\n }\n\n .xp-popup.show { transform: translate(-50%, -50%) scale(1); }\n .xp-popup.hide { transform: translate(-50%, -80%) scale(0.8); opacity: 0; }\n\n \/* \u2500\u2500 DIVIDER \u2500\u2500 *\/\n .divider {\n height: 1px;\n background: var(--border);\n margin: 16px 0;\n }\n\n \/* PSC TIP *\/\n .psc-tip {\n background: rgba(244,185,66,0.08);\n border: 1px solid rgba(244,185,66,0.2);\n border-left: 3px solid var(--gold);\n border-radius: 10px;\n padding: 12px 14px;\n font-size: 0.82rem;\n line-height: 1.6;\n color: var(--text);\n margin-bottom: 16px;\n display: none;\n }\n\n .psc-tip.show { display: block; }\n .psc-tip strong { color: var(--gold); }\n\n \/* Completion badge *\/\n .done-badge {\n display: inline-flex;\n align-items: center;\n gap: 4px;\n background: rgba(6,214,160,0.12);\n border: 1px solid rgba(6,214,160,0.3);\n color: var(--teal);\n font-family: 'Space Mono', monospace;\n font-size: 0.65rem;\n padding: 3px 8px;\n border-radius: 20px;\n margin-top: 6px;\n }\n\n .home-btn-row {\n margin-top: auto;\n padding-top: 20px;\n }\n<\/style>\n<\/head>\n<body>\n\n<div class=\"math-bg\" aria-hidden=\"true\">\n + – \u00d7 \u00f7 = ( ) [ ] { } % \u221a \u00b2 \u00b3 \u2211 \u03c0 > < \u2260 \u2264 \u2265 \u221e + - \u00d7 \u00f7 = ( ) % \u221a + - \u00d7 \u00f7 = ( ) \u00b2\n + - \u00d7 \u00f7 BODMAS = % \u221a ( ) [ ] + - \u00d7 \u00f7 = % \u221a \u00b2 \u00b3 \u2211 \u2260 \u2264 \u2265 + - \u00d7 \u00f7 = % \u221a \u221e + - \u00d7 \u00f7\n<\/div>\n\n<div id=\"confetti-container\"><\/div>\n<div class=\"toast\" id=\"toast\"><\/div>\n<div class=\"xp-popup\" id=\"xp-popup\">+10 XP \u2b50<\/div>\n\n<div id=\"windopedu-app\">\n\n \n <div class=\"screen active\" id=\"screen-home\">\n <div class=\"app-header\">\n <div class=\"logo\">Windop<span>Edu<\/span><\/div>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"hud-xp\">0 XP<\/div>\n <div class=\"streak-badge\" id=\"hud-streak\">\ud83d\udd25 0<\/div>\n <\/div>\n <\/div>\n\n <div class=\"hero-card\">\n <div class=\"session-tag\">SESSION 1 & 2<\/div>\n <div class=\"hero-title\">BODMAS & \u0d2a\u0d42\u0d7c\u0d23\u0d4d\u0d23\u0d38\u0d02\u0d16\u0d4d\u0d2f\u0d15\u0d7e<\/div>\n <div class=\"hero-sub\">Integers, Sign Rules, Vinculum, Block Method<\/div>\n <div class=\"progress-row\">\n <div class=\"progress-bar\">\n <div class=\"progress-fill\" id=\"overall-progress\" style=\"width:0%\"><\/div>\n <\/div>\n <div class=\"progress-label\" id=\"progress-label\">0\/5 \u0d2a\u0d42\u0d7c\u0d24\u0d4d\u0d24\u0d3f\u0d2f\u0d3e\u0d2f\u0d3f<\/div>\n <\/div>\n <\/div>\n\n <div class=\"section-label\">\ud83d\udcd7 Concept & Logic<\/div>\n <div class=\"activity-grid\">\n <div class=\"act-card concept\" id=\"card-tf\" onclick=\"goActivity('tf')\">\n <div class=\"act-icon\">\ud83d\udd00<\/div>\n <div class=\"act-info\">\n <div class=\"act-name\">True\/False Property<\/div>\n <div class=\"act-desc\">\u0d1a\u0d3f\u0d39\u0d4d\u0d28 \u0d28\u0d3f\u0d2f\u0d2e\u0d19\u0d4d\u0d19\u0d7e \u0d36\u0d30\u0d3f\u0d2f\u0d4b \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4b?<\/div>\n <\/div>\n <div class=\"act-xp\">+10 XP<\/div>\n <\/div>\n <div class=\"act-card concept\" id=\"card-sorter\" onclick=\"goActivity('sorter')\">\n <div class=\"act-icon\">\ud83d\udccb<\/div>\n <div class=\"act-info\">\n <div class=\"act-name\">Step Sorter<\/div>\n <div class=\"act-desc\">BODMAS \u0d18\u0d1f\u0d4d\u0d1f\u0d19\u0d4d\u0d19\u0d7e \u0d15\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d7d \u0d05\u0d1f\u0d41\u0d15\u0d4d\u0d15\u0d41\u0d15<\/div>\n <\/div>\n <div class=\"act-xp\">+15 XP<\/div>\n <\/div>\n <\/div>\n\n <div class=\"section-label\">\u26a1 Speed Boosters<\/div>\n <div class=\"activity-grid\">\n <div class=\"act-card speed\" id=\"card-rapid\" onclick=\"goActivity('rapid')\">\n <div class=\"act-icon\">\u26a1<\/div>\n <div class=\"act-info\">\n <div class=\"act-name\">Rapid Fire<\/div>\n <div class=\"act-desc\">10 \u0d38\u0d46\u0d15\u0d4d\u0d15\u0d7b\u0d21\u0d3f\u0d7d BODMAS \u0d15\u0d23\u0d15\u0d4d\u0d15\u0d41\u0d15\u0d7e<\/div>\n <\/div>\n <div class=\"act-xp\">+20 XP<\/div>\n <\/div>\n <\/div>\n\n <div class=\"section-label\">\ud83c\udfaf Accuracy & Skill<\/div>\n <div class=\"activity-grid\">\n <div class=\"act-card accuracy\" id=\"card-error\" onclick=\"goActivity('error')\">\n <div class=\"act-icon\">\ud83d\udd0d<\/div>\n <div class=\"act-info\">\n <div class=\"act-name\">Error Spotter<\/div>\n <div class=\"act-desc\">\u0d24\u0d46\u0d31\u0d4d\u0d31\u0d41\u0d33\u0d4d\u0d33 Step \u0d15\u0d23\u0d4d\u0d1f\u0d46\u0d24\u0d4d\u0d24\u0d41\u0d15<\/div>\n <\/div>\n <div class=\"act-xp\">+15 XP<\/div>\n <\/div>\n <div class=\"act-card accuracy\" id=\"card-psc\" onclick=\"goActivity('psc')\">\n <div class=\"act-icon\">\ud83d\udcdd<\/div>\n <div class=\"act-info\">\n <div class=\"act-name\">PSC Practice<\/div>\n <div class=\"act-desc\">\u0d2e\u0d41\u0d7b \u0d35\u0d7c\u0d37 \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d19\u0d4d\u0d19\u0d7e \u2014 Option Elimination<\/div>\n <\/div>\n <div class=\"act-xp\">+20 XP<\/div>\n <\/div>\n <\/div>\n\n <div class=\"home-btn-row\"><\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-tf\">\n <div class=\"app-header\">\n <button class=\"back-btn\" onclick=\"goHome()\">\u2190 \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d1a\u0d4d<\/button>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"tf-xp-badge\">0 XP<\/div>\n <\/div>\n <\/div>\n <div class=\"act-header\">\n <div class=\"act-title-block\">\n <div class=\"act-screen-name concept\">Concept & Logic<\/div>\n <div class=\"act-screen-title\">True\/False Property \ud83d\udd00<\/div>\n <\/div>\n <div class=\"q-counter\" id=\"tf-counter\">1\/5<\/div>\n <\/div>\n\n <div class=\"tf-card\" id=\"tf-card\">\n <div class=\"q-label\">\u0d08 statement \u0d36\u0d30\u0d3f\u0d2f\u0d4b \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4b?<\/div>\n <div class=\"tf-statement\" id=\"tf-stmt\"><\/div>\n <div class=\"tf-math\" id=\"tf-math\"><\/div>\n <\/div>\n\n <div class=\"tf-buttons\">\n <button class=\"tf-btn true-btn\" id=\"tf-true\" onclick=\"tfAnswer(true)\">\u2713 \u0d36\u0d30\u0d3f<\/button>\n <button class=\"tf-btn false-btn\" id=\"tf-false\" onclick=\"tfAnswer(false)\">\u2717 \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d<\/button>\n <\/div>\n\n <div class=\"feedback-card\" id=\"tf-feedback\">\n <div class=\"feedback-title\" id=\"tf-fb-title\"><\/div>\n <div class=\"feedback-text\" id=\"tf-fb-text\"><\/div>\n <\/div>\n\n <div class=\"psc-tip\" id=\"tf-tip\"><\/div>\n\n <div style=\"margin-top:auto; padding-top:16px;\">\n <button class=\"btn btn-primary\" id=\"tf-next\" onclick=\"tfNext()\" style=\"display:none\">\u0d05\u0d1f\u0d41\u0d24\u0d4d\u0d24 \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d02 \u2192<\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-sorter\">\n <div class=\"app-header\">\n <button class=\"back-btn\" onclick=\"goHome()\">\u2190 \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d15\u0d4d<\/button>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"sorter-xp-badge\">0 XP<\/div>\n <\/div>\n <\/div>\n <div class=\"act-header\">\n <div class=\"act-title-block\">\n <div class=\"act-screen-name concept\">Concept & Logic<\/div>\n <div class=\"act-screen-title\">Step Sorter \ud83d\udccb<\/div>\n <\/div>\n <div class=\"q-counter\" id=\"sorter-counter\">1\/3<\/div>\n <\/div>\n\n <div class=\"q-card\">\n <div class=\"q-label\">\u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d02<\/div>\n <div class=\"q-math\" id=\"sorter-q\"><\/div>\n <div class=\"q-text\" style=\"font-size:0.85rem; color:var(--muted); margin-top:6px;\">\u0d24\u0d3e\u0d34\u0d46 \u0d09\u0d33\u0d4d\u0d33 Steps \u0d36\u0d30\u0d3f\u0d2f\u0d3e\u0d2f \u0d15\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d7d Drag \u0d1a\u0d46\u0d2f\u0d4d\u0d24\u0d4d \u0d05\u0d1f\u0d41\u0d15\u0d4d\u0d15\u0d41\u0d15<\/div>\n <\/div>\n\n <div class=\"steps-container\" id=\"sorter-steps\"><\/div>\n\n <div class=\"feedback-card\" id=\"sorter-feedback\">\n <div class=\"feedback-title\" id=\"sorter-fb-title\"><\/div>\n <div class=\"feedback-text\" id=\"sorter-fb-text\"><\/div>\n <\/div>\n\n <div class=\"psc-tip\" id=\"sorter-tip\"><\/div>\n\n <div style=\"margin-top:auto; padding-top:16px; display:flex; gap:10px;\">\n <button class=\"btn btn-outline\" id=\"sorter-check\" onclick=\"sorterCheck()\">\u2713 \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 \u0d2a\u0d30\u0d3f\u0d36\u0d4b\u0d27\u0d3f\u0d15\u0d4d\u0d15\u0d41\u0d15<\/button>\n <button class=\"btn btn-primary\" id=\"sorter-next\" onclick=\"sorterNext()\" style=\"display:none; flex:1;\">\u0d05\u0d1f\u0d41\u0d24\u0d4d\u0d24 \u2192<\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-rapid\">\n <div class=\"app-header\">\n <button class=\"back-btn\" onclick=\"goHome()\">\u2190 \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d15\u0d4d<\/button>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"rf-xp-badge\">0 XP<\/div>\n <\/div>\n <\/div>\n <div class=\"act-header\">\n <div class=\"act-title-block\">\n <div class=\"act-screen-name speed\">Speed Booster<\/div>\n <div class=\"act-screen-title\">Rapid Fire \u26a1<\/div>\n <\/div>\n <div class=\"q-counter\" id=\"rf-counter\">1\/6<\/div>\n <\/div>\n\n <div class=\"rf-timer\" id=\"rf-timer-display\">\n <svg width=\"86\" height=\"86\" viewBox=\"0 0 86 86\">\n <circle id=\"rf-timer-bg\" cx=\"43\" cy=\"43\" r=\"40\" stroke=\"rgba(255,255,255,0.08)\" stroke-width=\"3\"\/>\n <circle id=\"rf-timer-arc\" cx=\"43\" cy=\"43\" r=\"40\" stroke=\"#f4b942\" stroke-width=\"3\"\n stroke-dasharray=\"251.2\" stroke-dashoffset=\"0\"\/>\n <\/svg>\n <span id=\"rf-timer-num\">10<\/span>\n <\/div>\n\n <div class=\"rf-q\" id=\"rf-question\">?<\/div>\n\n <div class=\"rf-options\" id=\"rf-options\"><\/div>\n\n <div class=\"feedback-card\" id=\"rf-feedback\" style=\"margin-top:12px;\">\n <div class=\"feedback-title\" id=\"rf-fb-title\"><\/div>\n <div class=\"feedback-text\" id=\"rf-fb-text\"><\/div>\n <\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-error\">\n <div class=\"app-header\">\n <button class=\"back-btn\" onclick=\"goHome()\">\u2190 \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d15\u0d4d<\/button>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"err-xp-badge\">0 XP<\/div>\n <\/div>\n <\/div>\n <div class=\"act-header\">\n <div class=\"act-title-block\">\n <div class=\"act-screen-name accuracy\">Accuracy & Skill<\/div>\n <div class=\"act-screen-title\">Error Spotter \ud83d\udd0d<\/div>\n <\/div>\n <div class=\"q-counter\" id=\"err-counter\">1\/3<\/div>\n <\/div>\n\n <div class=\"q-card\">\n <div class=\"q-label\">\u0d07\u0d24\u0d3f\u0d7d \u0d12\u0d30\u0d41 Step-\u0d7d \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d \u0d09\u0d23\u0d4d\u0d1f\u0d4d \u2014 \u0d0f\u0d24\u0d4d Step \u0d06\u0d23\u0d4d \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d?<\/div>\n <div class=\"q-math\" id=\"err-q\"><\/div>\n <\/div>\n\n <div class=\"err-steps\" id=\"err-steps\"><\/div>\n\n <div class=\"feedback-card\" id=\"err-feedback\">\n <div class=\"feedback-title\" id=\"err-fb-title\"><\/div>\n <div class=\"feedback-text\" id=\"err-fb-text\"><\/div>\n <\/div>\n\n <div class=\"psc-tip\" id=\"err-tip\"><\/div>\n\n <div style=\"margin-top:auto; padding-top:16px;\">\n <button class=\"btn btn-primary\" id=\"err-next\" onclick=\"errNext()\" style=\"display:none\">\u0d05\u0d1f\u0d41\u0d24\u0d4d\u0d24 \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d02 \u2192<\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-psc\">\n <div class=\"app-header\">\n <button class=\"back-btn\" onclick=\"goHome()\">\u2190 \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d15\u0d4d<\/button>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"psc-xp-badge\">0 XP<\/div>\n <\/div>\n <\/div>\n <div class=\"act-header\">\n <div class=\"act-title-block\">\n <div class=\"act-screen-name accuracy\">PSC Practice<\/div>\n <div class=\"act-screen-title\">Option Eliminator \ud83d\udcdd<\/div>\n <\/div>\n <div class=\"q-counter\" id=\"psc-counter\">1\/3<\/div>\n <\/div>\n\n <div class=\"q-card\">\n <div class=\"q-label\">\u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d02<\/div>\n <div class=\"q-math\" id=\"psc-q-math\"><\/div>\n <div class=\"q-text\" id=\"psc-q-text\"><\/div>\n <\/div>\n\n <div class=\"options-grid\" id=\"psc-options\"><\/div>\n\n <div class=\"feedback-card\" id=\"psc-feedback\">\n <div class=\"feedback-title\" id=\"psc-fb-title\"><\/div>\n <div class=\"feedback-text\" id=\"psc-fb-text\"><\/div>\n <div class=\"step-list\" id=\"psc-steps\"><\/div>\n <\/div>\n\n <div class=\"psc-tip\" id=\"psc-tip\"><\/div>\n\n <div style=\"margin-top:auto; padding-top:16px;\">\n <button class=\"btn btn-primary\" id=\"psc-next\" onclick=\"pscNext()\" style=\"display:none\">\u0d05\u0d1f\u0d41\u0d24\u0d4d\u0d24 \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d02 \u2192<\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-result\">\n <div class=\"app-header\">\n <div class=\"logo\">Windop<span>Edu<\/span><\/div>\n <\/div>\n <div class=\"result-screen\">\n <div class=\"result-emoji\" id=\"result-emoji\">\ud83c\udfc6<\/div>\n <div class=\"result-title\" id=\"result-title\">\u0d2e\u0d3f\u0d15\u0d1a\u0d4d\u0d1a \u0d2a\u0d4d\u0d30\u0d15\u0d1f\u0d28\u0d02!<\/div>\n <div class=\"result-sub\" id=\"result-sub\">\u0d28\u0d3f\u0d19\u0d4d\u0d19\u0d7e \u0d08 Activity \u0d2d\u0d02\u0d17\u0d3f\u0d2f\u0d3e\u0d2f\u0d3f \u0d2a\u0d42\u0d7c\u0d24\u0d4d\u0d24\u0d3f\u0d2f\u0d3e\u0d15\u0d4d\u0d15\u0d3f!<\/div>\n <div class=\"result-stats\">\n <div class=\"stat-box\">\n <div class=\"stat-val gold\" id=\"res-xp\">0<\/div>\n <div class=\"stat-label\">XP \u0d28\u0d47\u0d1f\u0d3f<\/div>\n <\/div>\n <div class=\"stat-box\">\n <div class=\"stat-val teal\" id=\"res-correct\">0<\/div>\n <div class=\"stat-label\">\u0d36\u0d30\u0d3f \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02<\/div>\n <\/div>\n <div class=\"stat-box\">\n <div class=\"stat-val red\" id=\"res-wrong\">0<\/div>\n <div class=\"stat-label\">\u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d<\/div>\n <\/div>\n <\/div>\n <button class=\"btn btn-gold\" onclick=\"goHome()\" style=\"max-width:320px\">\ud83c\udfe0 Home-\u0d32\u0d47\u0d15\u0d4d\u0d15\u0d4d \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d1a\u0d41\u0d2a\u0d4b\u0d15\u0d41\u0d15<\/button>\n <div style=\"height:12px;\"><\/div>\n <button class=\"btn btn-outline\" id=\"retry-btn\" style=\"max-width:320px\">\u21ba \u0d35\u0d40\u0d23\u0d4d\u0d1f\u0d41\u0d02 \u0d36\u0d4d\u0d30\u0d2e\u0d3f\u0d15\u0d4d\u0d15\u0d41\u0d15<\/button>\n <\/div>\n <\/div>\n\n<\/div>\n\n<script>\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ STATE\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nlet totalXP = 0;\nlet streak = 0;\nlet completedActivities = new Set();\nlet currentActivity = null;\nlet currentQ = 0;\nlet sessionCorrect = 0;\nlet sessionWrong = 0;\nlet sessionXP = 0;\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ DATA\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\nconst TF_DATA = [\n {\n stmt: \"(-) \u00d7 (-) = (+)\",\n math: \"\u0d09\u0d26\u0d3e: (-3) \u00d7 (-4) = 12\",\n answer: true,\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: \u0d17\u0d41\u0d23\u0d28\u0d24\u0d4d\u0d24\u0d3f\u0d7d\/\u0d39\u0d30\u0d23\u0d24\u0d4d\u0d24\u0d3f\u0d7d \u0d2e\u0d48\u0d28\u0d38\u0d4d \u0d1a\u0d3f\u0d39\u0d4d\u0d28\u0d02 \u0d07\u0d30\u0d1f\u0d4d\u0d1f \u0d24\u0d35\u0d23 \u0d35\u0d28\u0d4d\u0d28\u0d3e\u0d7d \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 \u0d0e\u0d2a\u0d4d\u0d2a\u0d4b\u0d34\u0d41\u0d02 Positive \u0d06\u0d15\u0d41\u0d02.\"\n },\n {\n stmt: \"(-) \u00d7 (+) = (+)\",\n math: \"\u0d09\u0d26\u0d3e: (-5) \u00d7 (3) = ?\",\n answer: false,\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: Negative \u00d7 Positive = Negative. \u0d12\u0d31\u0d4d\u0d31 \u0d2e\u0d48\u0d28\u0d38\u0d4d \u2192 \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 Negative.\"\n },\n {\n stmt: \"BODMAS-\u0d7d \u0d17\u0d41\u0d23\u0d28\u0d02 (\u00d7) \u0d15\u0d42\u0d1f\u0d4d\u0d1f\u0d32\u0d3f\u0d28\u0d4d (+ ) \u0d2e\u0d41\u0d7b\u0d2a\u0d4d \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d23\u0d02\",\n math: \"\u0d09\u0d26\u0d3e: 5 + 3 \u00d7 2 = 5 + 6 = 11 \u2713\",\n answer: true,\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: BODMAS = Brackets \u2192 Of \u2192 Division \u2192 Multiplication \u2192 Addition \u2192 Subtraction. \u0d17\u0d41\u0d23\u0d28\u0d02, \u0d39\u0d30\u0d23\u0d02 \u2014 \u0d07\u0d1f\u0d24\u0d4d\u0d24\u0d41\u0d28\u0d3f\u0d28\u0d4d\u0d28\u0d4d \u0d35\u0d32\u0d24\u0d4d\u0d24\u0d4b\u0d1f\u0d4d\u0d1f\u0d4d \u0d15\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d7d.\"\n },\n {\n stmt: \"Vinculum (\u0d2c\u0d3e\u0d7c) \u2014 \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d3f\u0d28\u0d4d \u0d36\u0d47\u0d37\u0d02 \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d23\u0d02\",\n math: \"V-BODMAS: Vinculum \u0d06\u0d26\u0d4d\u0d2f\u0d02!\",\n answer: false,\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: V-BODMAS-\u0d7d Vinculum (\u0d12\u0d30\u0d41 \u0d38\u0d02\u0d16\u0d4d\u0d2f\u0d15\u0d4d\u0d15\u0d4d \u0d2e\u0d41\u0d15\u0d33\u0d3f\u0d32\u0d46 \u0d2c\u0d3e\u0d7c) \u0d0f\u0d31\u0d4d\u0d31\u0d35\u0d41\u0d02 \u0d06\u0d26\u0d4d\u0d2f\u0d02 \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d23\u0d02 \u2014 \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d3f\u0d28\u0d41\u0d02 \u0d2e\u0d41\u0d7b\u0d2a\u0d4d.\"\n },\n {\n stmt: \"(-6) \u00f7 (-2) = -3\",\n math: \"Negative \u00f7 Negative = ?\",\n answer: false,\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: (-6) \u00f7 (-2) = +3. \u0d30\u0d23\u0d4d\u0d1f\u0d41\u0d02 Negative \u0d06\u0d2f\u0d3e\u0d7d \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 Positive. (-6) \u00f7 (+2) = -3 \u0d06\u0d15\u0d41\u0d02.\"\n }\n];\n\nconst SORTER_DATA = [\n {\n q: \"[(-12) + 4] \u00f7 [(-5) + 3] = ?\",\n steps: [\n \"\u0d39\u0d30\u0d23\u0d02: (-8) \u00f7 (-2) = 4\",\n \"\u0d06\u0d26\u0d4d\u0d2f \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d4d: (-12) + 4 = -8\",\n \"\u0d30\u0d23\u0d4d\u0d1f\u0d3e\u0d02 \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d4d: (-5) + 3 = -2\"\n ],\n order: [1, 2, 0],\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: \u0d12\u0d30\u0d47 \u0d24\u0d30\u0d02 \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d4d \u0d12\u0d28\u0d4d\u0d28\u0d3f\u0d32\u0d27\u0d3f\u0d15\u0d02 \u0d09\u0d23\u0d4d\u0d1f\u0d46\u0d19\u0d4d\u0d15\u0d3f\u0d7d \u0d07\u0d1f\u0d24\u0d4d\u0d24\u0d41\u0d28\u0d3f\u0d28\u0d4d\u0d28\u0d4d \u0d35\u0d32\u0d24\u0d4d\u0d24\u0d4b\u0d1f\u0d4d\u0d1f\u0d4d \u0d15\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d7d \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d23\u0d02.\"\n },\n {\n q: \"100 + 50 \u00f7 2 \u00d7 3 - 25 \u00d7 2 = ?\",\n steps: [\n \"\u0d15\u0d42\u0d1f\u0d4d\u0d1f\u0d7d\/\u0d15\u0d41\u0d31\u0d2f\u0d4d\u0d15\u0d4d\u0d15\u0d7d: 100 + 75 - 50 = 125\",\n \"50 \u00f7 2 = 25, \u0d2a\u0d3f\u0d28\u0d4d\u0d28\u0d46 25 \u00d7 3 = 75\",\n \"25 \u00d7 2 = 50\"\n ],\n order: [1, 2, 0],\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: Block Method \u2014 \u00f7 \u00d7 \u0d2d\u0d3e\u0d17\u0d19\u0d4d\u0d19\u0d7e \u0d2a\u0d4d\u0d30\u0d24\u0d4d\u0d2f\u0d47\u0d15\u0d02 Block \u0d06\u0d2f\u0d3f \u0d15\u0d23\u0d15\u0d4d\u0d15\u0d4d \u0d1a\u0d46\u0d2f\u0d4d\u0d24\u0d4d \u0d36\u0d47\u0d37\u0d02 + \u2212 \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d41\u0d15.\"\n },\n {\n q: \"25 \u2212 [20 \u2212 {10 \u2212 (7 \u2212 2)}] = ?\",\n steps: [\n \"\u0d0f\u0d31\u0d4d\u0d31\u0d35\u0d41\u0d02 \u0d09\u0d33\u0d4d\u0d33\u0d3f\u0d32\u0d46 (): 7 \u2212 2 = 5\",\n \"{}: 10 \u2212 5 = 5\",\n \"[]: 20 \u2212 5 = 15\",\n \"\u0d05\u0d35\u0d38\u0d3e\u0d28\u0d02: 25 \u2212 15 = 10\"\n ],\n order: [0, 1, 2, 3],\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: Nested \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d4d \u2192 \u0d0f\u0d31\u0d4d\u0d31\u0d35\u0d41\u0d02 \u0d09\u0d33\u0d4d\u0d33\u0d3f\u0d7d \u0d28\u0d3f\u0d28\u0d4d\u0d28\u0d4d \u0d2a\u0d41\u0d31\u0d24\u0d4d\u0d24\u0d47\u0d15\u0d4d\u0d15\u0d4d: ( ) \u2192 { } \u2192 [ ].\"\n }\n];\n\nconst RAPID_DATA = [\n { q: \"(-3) \u00d7 (-4) = ?\", opts: [\"12\", \"-12\", \"7\", \"-7\"], ans: 0, exp: \"Neg \u00d7 Neg = Pos \u2192 3\u00d74=12\" },\n { q: \"(-15) \u00f7 3 = ?\", opts: [\"-5\", \"5\", \"-45\", \"45\"], ans: 0, exp: \"Neg \u00f7 Pos = Neg \u2192 15\u00f73=5\" },\n { q: \"5 + 3 \u00d7 2 = ?\", opts: [\"16\", \"11\", \"10\", \"13\"], ans: 1, exp: \"BODMAS: \u00d7 \u0d06\u0d26\u0d4d\u0d2f\u0d02 \u2192 5+6=11\" },\n { q: \"(-8) \u2212 (\u221210) = ?\", opts: [\"\u22122\", \"2\", \"18\", \"\u221218\"], ans: 1, exp: \"\u2212(\u221210) = +10 \u2192 \u22128+10=2\" },\n { q: \"18 \u00f7 (\u22122) \u00d7 (\u22123) = ?\", opts: [\"\u221227\", \"27\", \"3\", \"\u22123\"], ans: 1, exp: \"18\u00f7(\u22122)=\u22129, then \u22129\u00d7(\u22123)=+27\" },\n { q: \"2 \u00d7 [3 + (4\u22121)] = ?\", opts: [\"12\", \"10\", \"14\", \"16\"], ans: 2, exp: \"Inner: 4\u22121=3, then 3+3=6, then 2\u00d76=12... wait: 3+3=6, 2\u00d76=12 \u2014 opt A=12\" }\n];\n\/\/ Fix last question\nRAPID_DATA[5] = { q: \"2 \u00d7 [3 + (4\u22121)] = ?\", opts: [\"12\", \"10\", \"14\", \"8\"], ans: 0, exp: \"(): 4\u22121=3 \u2192 []: 3+3=6 \u2192 2\u00d76=12\" };\n\nconst ERROR_DATA = [\n {\n q: \"[(-15) \u00f7 (-3)] \u00d7 [(-2) \u2212 1] = ?\",\n steps: [\n { text: \"Step 1: (-15) \u00f7 (-3) = -5\", wrong: true },\n { text: \"Step 2: (-2) \u2212 1 = -3\", wrong: false },\n { text: \"Step 3: (-5) \u00d7 (-3) = 15\", wrong: false }\n ],\n wrongIdx: 0,\n fb: \"Step 1-\u0d7d \u0d06\u0d23\u0d4d \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d! (-15) \u00f7 (-3) = +5 \u0d06\u0d15\u0d23\u0d02 (Neg \u00f7 Neg = Pos). Step 3-\u0d7d -5 \u0d09\u0d33\u0d4d\u0d33\u0d24\u0d4d \u0d15\u0d4a\u0d23\u0d4d\u0d1f\u0d4d \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 -15 \u0d06\u0d15\u0d41\u0d02.\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d24\u0d4d\u0d24\u0d3f\u0d7d Negative \u00f7 Negative \u0d15\u0d23\u0d4d\u0d1f\u0d3e\u0d7d \u0d09\u0d1f\u0d7b \u0d1a\u0d3f\u0d39\u0d4d\u0d28\u0d02 + \u0d06\u0d15\u0d4d\u0d15\u0d3f \u0d2e\u0d3e\u0d31\u0d4d\u0d31\u0d41\u0d15.\"\n },\n {\n q: \"15 + 3 \u00d7 2 \u2212 10 \u00f7 5 = ?\",\n steps: [\n { text: \"Step 1: 15 + 3 = 18 (\u0d15\u0d42\u0d1f\u0d4d\u0d1f\u0d7d \u0d06\u0d26\u0d4d\u0d2f\u0d02)\", wrong: true },\n { text: \"Step 2: 18 \u00d7 2 = 36\", wrong: false },\n { text: \"Step 3: 36 \u2212 10 \u00f7 5 = 34\", wrong: false }\n ],\n wrongIdx: 0,\n fb: \"Step 1 \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d! BODMAS-\u0d7d \u00f7 \u00d7 \u0d06\u0d26\u0d4d\u0d2f\u0d02. \u0d36\u0d30\u0d3f: 3\u00d72=6, 10\u00f75=2, \u0d36\u0d47\u0d37\u0d02 15+6\u22122=19.\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d4d \u0d07\u0d32\u0d4d\u0d32\u0d3e\u0d24\u0d4d\u0d24 \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d24\u0d4d\u0d24\u0d3f\u0d7d \u00d7 \u00f7 \u0d06\u0d26\u0d4d\u0d2f\u0d02, + \u2212 \u0d12\u0d1f\u0d41\u0d35\u0d3f\u0d7d.\"\n },\n {\n q: \"[(-8) \u2212 (\u221210)] + [(\u22126) \u00f7 2] = ?\",\n steps: [\n { text: \"Step 1: (\u22128) \u2212 (\u221210) = \u221218 (\u2212 \u2212 = \u221218?)\", wrong: true },\n { text: \"Step 2: (\u22126) \u00f7 2 = \u22123\", wrong: false },\n { text: \"Step 3: \u221218 + (\u22123) = \u221221 (Step 1 \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d)\", wrong: false }\n ],\n wrongIdx: 0,\n fb: \"Step 1 \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d! (\u22128) \u2212 (\u221210) = \u22128 + 10 = +2. \u0d30\u0d23\u0d4d\u0d1f\u0d4d Minus \u0d12\u0d30\u0d41\u0d2e\u0d3f\u0d1a\u0d4d\u0d1a\u0d4d \u0d35\u0d28\u0d4d\u0d28\u0d3e\u0d7d Plus \u0d06\u0d15\u0d41\u0d02.\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: a \u2212 (\u2212b) = a + b. \u0d07\u0d24\u0d4d \u0d12\u0d30\u0d41 common mistake! Negative \u0d06\u0d26\u0d4d\u0d2f\u0d02 \u0d2a\u0d4d\u0d32\u0d38\u0d4d \u0d06\u0d15\u0d4d\u0d15\u0d3f \u0d13\u0d7c\u0d15\u0d4d\u0d15\u0d41\u0d15.\"\n }\n];\n\nconst PSC_DATA = [\n {\n q: \"[(-12) + 4] \u00f7 [(-5) + 3] = ?\",\n opts: [\"-4\", \"4\", \"2\", \"-2\"],\n ans: 1,\n steps: [\"Step 1: (\u221212)+4 = \u22128\", \"Step 2: (\u22125)+3 = \u22122\", \"Step 3: (\u22128)\u00f7(\u22122) = +4\"],\n elimination: \"A, D-\u0d7d \u22124, \u22122 \u2192 \u0d39\u0d30\u0d23\u0d02 Neg\u00f7Neg=Pos \u0d06\u0d23\u0d4d, Positive \u0d06\u0d15\u0d23\u0d02 \u2192 A,D \u0d12\u0d34\u0d3f\u0d35\u0d3e\u0d15\u0d4d\u0d15\u0d3e\u0d02. C-\u0d2f\u0d3f\u0d7d 2 \u2192 \u0d18\u0d1f\u0d15\u0d19\u0d4d\u0d19\u0d7e \u0d28\u0d4b\u0d15\u0d4d\u0d15\u0d3f\u0d2f\u0d3e\u0d7d 8\u00f72=4, 2 \u0d05\u0d32\u0d4d\u0d32. \u2234 B = 4 \u2713\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 Positive \u0d06\u0d23\u0d4b Negative \u0d06\u0d23\u0d4b \u0d06\u0d26\u0d4d\u0d2f\u0d02 \u0d24\u0d40\u0d30\u0d41\u0d2e\u0d3e\u0d28\u0d3f\u0d15\u0d4d\u0d15\u0d42 \u2014 \u0d05\u0d24\u0d4d \u0d2e\u0d3e\u0d24\u0d4d\u0d30\u0d02 \u0d28\u0d4b\u0d15\u0d4d\u0d15\u0d3f 2 Options \u0d12\u0d34\u0d3f\u0d35\u0d3e\u0d15\u0d4d\u0d15\u0d3e\u0d02!\"\n },\n {\n q: \"100 + 50 \u00f7 2 \u00d7 3 \u2212 25 \u00d7 2 = ?\",\n opts: [\"225\", \"125\", \"150\", \"175\"],\n ans: 1,\n steps: [\"Block 1: 100\", \"Block 2: 50\u00f72\u00d73 = 25\u00d73 = 75\", \"Block 3: 25\u00d72 = 50\", \"Final: 100+75\u221250 = 125\"],\n elimination: \"A=225 \u2192 100+ \u0d12\u0d15\u0d4d\u0d15\u0d46 \u0d15\u0d42\u0d1f\u0d3f\u0d2f\u0d3e\u0d7d 225 \u0d06\u0d15\u0d3f\u0d32\u0d4d\u0d32 (Block Method \u0d09\u0d2a\u0d2f\u0d4b\u0d17\u0d3f\u0d15\u0d4d\u0d15\u0d42). C=150 \u2192 100+75=175 \u0d2e\u0d3e\u0d24\u0d4d\u0d30\u0d02; 50 \u0d15\u0d42\u0d1f\u0d3f \u0d15\u0d41\u0d31\u0d2f\u0d4d\u0d15\u0d4d\u0d15\u0d23\u0d02. B=125 \u2713\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: Block Method \u2014 +, \u2212 \u0d1a\u0d3f\u0d39\u0d4d\u0d28\u0d02 \u0d15\u0d3e\u0d23\u0d41\u0d2e\u0d4d\u0d2a\u0d4b\u0d7e block-\u0d09\u0d15\u0d7e \u0d09\u0d23\u0d4d\u0d1f\u0d3e\u0d15\u0d4d\u0d15\u0d41\u0d15; \u0d13\u0d30\u0d4b block-\u0d09\u0d02 \u00f7 \u00d7 \u0d06\u0d26\u0d4d\u0d2f\u0d02 \u0d1a\u0d46\u0d2f\u0d4d\u0d15.\"\n },\n {\n q: \"15 + 3 \u00d7 2 \u2212 10 \u00f7 5 = ?\",\n opts: [\"17\", \"19\", \"21\", \"15\"],\n ans: 1,\n steps: [\"10\u00f75 = 2\", \"3\u00d72 = 6\", \"15 + 6 \u2212 2 = 19\"],\n elimination: \"D=15 \u2192 + \u0d09\u0d23\u0d4d\u0d1f\u0d4d, 15 \u0d2e\u0d3e\u0d24\u0d4d\u0d30\u0d02 \u0d06\u0d15\u0d3f\u0d32\u0d4d\u0d32. A=17 \u2192 15+6=21; 21\u22122=19 (17 \u0d05\u0d32\u0d4d\u0d32). C=21 \u2192 \u0d15\u0d41\u0d31\u0d2f\u0d4d\u0d15\u0d4d\u0d15\u0d7d \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d47\u0d23\u0d4d\u0d1f\u0d24\u0d4d miss \u0d06\u0d2f\u0d3f. B=19 \u2713\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: Unit Digit Method: 15+6=21, 21\u22122=19. \u0d05\u0d35\u0d38\u0d3e\u0d28 \u0d05\u0d15\u0d4d\u0d15\u0d02 9 \u2192 Option B \u0d2e\u0d3e\u0d24\u0d4d\u0d30\u0d02 9-\u0d7d \u0d05\u0d35\u0d38\u0d3e\u0d28\u0d3f\u0d15\u0d4d\u0d15\u0d41\u0d28\u0d4d\u0d28\u0d41!\"\n }\n];\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ NAVIGATION\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction showScreen(id) {\n document.querySelectorAll('.screen').forEach(s => s.classList.remove('active'));\n document.getElementById('screen-' + id).classList.add('active');\n window.scrollTo(0, 0);\n}\n\nfunction goHome() {\n updateHomeProgress();\n showScreen('home');\n updateHUD();\n}\n\nfunction goActivity(act) {\n currentActivity = act;\n currentQ = 0;\n sessionCorrect = 0;\n sessionWrong = 0;\n sessionXP = 0;\n\n if (act === 'tf') initTF();\n else if (act === 'sorter') initSorter();\n else if (act === 'rapid') initRapid();\n else if (act === 'error') initError();\n else if (act === 'psc') initPSC();\n}\n\nfunction updateHUD() {\n document.getElementById('hud-xp').textContent = totalXP + ' XP';\n document.getElementById('hud-streak').textContent = '\ud83d\udd25 ' + streak;\n}\n\nfunction updateActivityXPBadge(id) {\n const el = document.getElementById(id);\n if (el) el.textContent = sessionXP + ' XP';\n}\n\nfunction updateHomeProgress() {\n const total = 5;\n const done = completedActivities.size;\n document.getElementById('overall-progress').style.width = (done \/ total * 100) + '%';\n document.getElementById('progress-label').textContent = done + '\/' + total + ' \u0d2a\u0d42\u0d7c\u0d24\u0d4d\u0d24\u0d3f\u0d2f\u0d3e\u0d2f\u0d3f';\n\n ['tf','sorter','rapid','error','psc'].forEach(act => {\n const card = document.getElementById('card-' + act);\n if (card) {\n if (completedActivities.has(act)) {\n card.classList.add('done');\n if (!card.querySelector('.act-done-mark')) {\n const m = document.createElement('div');\n m.className = 'act-done-mark';\n m.textContent = '\u2713 Done';\n card.appendChild(m);\n }\n }\n }\n });\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ XP & FEEDBACK HELPERS\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction awardXP(pts, isCorrect) {\n totalXP += pts;\n sessionXP += pts;\n if (isCorrect) {\n streak++;\n sessionCorrect++;\n } else {\n streak = 0;\n sessionWrong++;\n }\n updateHUD();\n showXPPopup(isCorrect ? '+' + pts + ' XP \u2b50' : '\u0d06\u0d26\u0d4d\u0d2f\u0d02 \u0d36\u0d4d\u0d30\u0d2e\u0d3f\u0d15\u0d4d\u0d15\u0d42!', isCorrect);\n}\n\nfunction showXPPopup(msg, positive) {\n const el = document.getElementById('xp-popup');\n el.textContent = msg;\n el.style.background = positive\n ? 'linear-gradient(135deg,#f4b942,#e8a020)'\n : 'linear-gradient(135deg,#ef476f,#c73060)';\n el.style.color = positive ? '#0d1b2a' : '#fff';\n el.classList.remove('hide');\n el.classList.add('show');\n setTimeout(() => {\n el.classList.remove('show');\n el.classList.add('hide');\n setTimeout(() => el.classList.remove('hide'), 300);\n }, 900);\n}\n\nfunction showToast(msg) {\n const t = document.getElementById('toast');\n t.textContent = msg;\n t.classList.add('show');\n setTimeout(() => t.classList.remove('show'), 2000);\n}\n\nfunction showResult(actKey, xpPerActivity) {\n completedActivities.add(actKey);\n document.getElementById('res-xp').textContent = sessionXP;\n document.getElementById('res-correct').textContent = sessionCorrect;\n document.getElementById('res-wrong').textContent = sessionWrong;\n\n const pct = sessionCorrect \/ (sessionCorrect + sessionWrong);\n let emoji = pct >= 0.8 ? '\ud83c\udfc6' : pct >= 0.5 ? '\ud83d\udc4d' : '\ud83d\udcda';\n let title = pct >= 0.8 ? '\u0d05\u0d38\u0d4d\u0d38\u0d7d!' : pct >= 0.5 ? '\u0d28\u0d28\u0d4d\u0d28\u0d3e\u0d2f\u0d3f!' : '\u0d35\u0d40\u0d23\u0d4d\u0d1f\u0d41\u0d02 \u0d36\u0d4d\u0d30\u0d2e\u0d3f\u0d15\u0d4d\u0d15\u0d42!';\n let sub = pct >= 0.8\n ? '\u0d28\u0d3f\u0d19\u0d4d\u0d19\u0d7e \u0d08 Activity-\u0d7d \u0d09\u0d17\u0d4d\u0d30\u0d7b \u0d2a\u0d4d\u0d30\u0d15\u0d1f\u0d28\u0d02 \u0d15\u0d3e\u0d34\u0d4d\u0d1a\u0d35\u0d1a\u0d4d\u0d1a\u0d41! \ud83c\udf89'\n : '\u0d13\u0d30\u0d4b \u0d36\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d32\u0d41\u0d02 \u0d28\u0d3f\u0d19\u0d4d\u0d19\u0d7e \u0d15\u0d42\u0d1f\u0d41\u0d24\u0d7d \u0d2e\u0d3f\u0d15\u0d1a\u0d4d\u0d1a\u0d24\u0d3e\u0d15\u0d41\u0d28\u0d4d\u0d28\u0d41.';\n\n document.getElementById('result-emoji').textContent = emoji;\n document.getElementById('result-title').textContent = title;\n document.getElementById('result-sub').textContent = sub;\n\n document.getElementById('retry-btn').onclick = () => goActivity(actKey);\n\n if (pct >= 0.8) launchConfetti();\n\n updateHomeProgress();\n showScreen('result');\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ CONFETTI\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction launchConfetti() {\n const container = document.getElementById('confetti-container');\n container.innerHTML = '';\n const colors = ['#f4b942','#06d6a0','#4cc9f0','#ef476f','#ffd166','#06d6a0'];\n for (let i = 0; i < 60; i++) {\n const p = document.createElement('div');\n p.className = 'confetti-piece';\n p.style.left = Math.random() * 100 + 'vw';\n p.style.background = colors[Math.floor(Math.random() * colors.length)];\n p.style.animationDuration = (1.5 + Math.random() * 2) + 's';\n p.style.animationDelay = (Math.random() * 0.8) + 's';\n p.style.transform = 'rotate(' + (Math.random() * 360) + 'deg)';\n p.style.width = (6 + Math.random() * 6) + 'px';\n p.style.height = (10 + Math.random() * 8) + 'px';\n container.appendChild(p);\n setTimeout(() => p.remove(), 4000);\n }\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ TRUE \/ FALSE ACTIVITY\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction initTF() {\n showScreen('tf');\n renderTF();\n}\n\nfunction renderTF() {\n const d = TF_DATA[currentQ];\n document.getElementById('tf-stmt').textContent = d.stmt;\n document.getElementById('tf-math').textContent = d.math;\n document.getElementById('tf-counter').textContent = (currentQ + 1) + '\/' + TF_DATA.length;\n\n const fb = document.getElementById('tf-feedback');\n fb.className = 'feedback-card';\n document.getElementById('tf-tip').className = 'psc-tip';\n document.getElementById('tf-next').style.display = 'none';\n\n const tb = document.getElementById('tf-true');\n const fb2 = document.getElementById('tf-false');\n tb.disabled = false;\n fb2.disabled = false;\n tb.className = 'tf-btn true-btn';\n fb2.className = 'tf-btn false-btn';\n}\n\nfunction tfAnswer(ans) {\n const d = TF_DATA[currentQ];\n const correct = ans === d.answer;\n const tb = document.getElementById('tf-true');\n const fb2 = document.getElementById('tf-false');\n\n tb.disabled = true;\n fb2.disabled = true;\n\n if (correct) {\n awardXP(10, true);\n document.getElementById('tf-feedback').className = 'feedback-card correct show';\n document.getElementById('tf-fb-title').textContent = '\u2705 \u0d36\u0d30\u0d3f! (+10 XP)';\n document.getElementById('tf-fb-text').textContent = d.math;\n if (ans) tb.classList.add('selected-correct');\n else fb2.classList.add('selected-correct');\n } else {\n awardXP(0, false);\n document.getElementById('tf-feedback').className = 'feedback-card wrong show';\n document.getElementById('tf-fb-title').textContent = '\u274c \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d!';\n const correctAns = d.answer ? '\u0d36\u0d30\u0d3f (True)' : '\u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d (False)';\n document.getElementById('tf-fb-text').textContent = '\u0d36\u0d30\u0d3f \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02: ' + correctAns + '. ' + d.math;\n if (ans) tb.classList.add('selected-wrong');\n else fb2.classList.add('selected-wrong');\n }\n\n const tipEl = document.getElementById('tf-tip');\n tipEl.innerHTML = '<strong>\ud83d\udca1 PSC Tip:<\/strong> ' + d.tip;\n tipEl.className = 'psc-tip show';\n\n document.getElementById('tf-next').style.display = 'flex';\n updateActivityXPBadge('tf-xp-badge');\n}\n\nfunction tfNext() {\n currentQ++;\n if (currentQ >= TF_DATA.length) {\n showResult('tf', 10);\n } else {\n renderTF();\n }\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ STEP SORTER ACTIVITY\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nlet sorterCurrentOrder = [];\nlet dragSrcIdx = null;\n\nfunction initSorter() {\n showScreen('sorter');\n renderSorter();\n}\n\nfunction renderSorter() {\n const d = SORTER_DATA[currentQ];\n document.getElementById('sorter-q').textContent = d.q;\n document.getElementById('sorter-counter').textContent = (currentQ + 1) + '\/' + SORTER_DATA.length;\n\n \/\/ Shuffle steps\n sorterCurrentOrder = [...d.steps.keys()].sort(() => Math.random() - 0.5);\n\n document.getElementById('sorter-feedback').className = 'feedback-card';\n document.getElementById('sorter-tip').className = 'psc-tip';\n document.getElementById('sorter-check').style.display = 'flex';\n document.getElementById('sorter-next').style.display = 'none';\n\n renderSorterSteps(d);\n}\n\nfunction renderSorterSteps(d) {\n const container = document.getElementById('sorter-steps');\n container.innerHTML = '';\n sorterCurrentOrder.forEach((origIdx, pos) => {\n const step = document.createElement('div');\n step.className = 'step-drag';\n step.draggable = true;\n step.dataset.pos = pos;\n step.innerHTML = `<span class=\"drag-handle\">\u283f<\/span><span class=\"step-num\">${pos + 1}<\/span><span>${d.steps[origIdx]}<\/span>`;\n\n step.addEventListener('dragstart', e => {\n dragSrcIdx = pos;\n step.classList.add('dragging');\n e.dataTransfer.effectAllowed = 'move';\n });\n step.addEventListener('dragend', () => step.classList.remove('dragging'));\n step.addEventListener('dragover', e => { e.preventDefault(); step.classList.add('over'); });\n step.addEventListener('dragleave', () => step.classList.remove('over'));\n step.addEventListener('drop', e => {\n e.preventDefault();\n step.classList.remove('over');\n const targetPos = parseInt(step.dataset.pos);\n if (dragSrcIdx !== null && dragSrcIdx !== targetPos) {\n [sorterCurrentOrder[dragSrcIdx], sorterCurrentOrder[targetPos]] = [sorterCurrentOrder[targetPos], sorterCurrentOrder[dragSrcIdx]];\n renderSorterSteps(SORTER_DATA[currentQ]);\n }\n });\n\n \/\/ Touch support (swap on tap)\n step.addEventListener('click', () => {\n if (dragSrcIdx === null) {\n dragSrcIdx = pos;\n step.style.border = '2px solid var(--gold)';\n } else if (dragSrcIdx === pos) {\n dragSrcIdx = null;\n step.style.border = '';\n } else {\n [sorterCurrentOrder[dragSrcIdx], sorterCurrentOrder[pos]] = [sorterCurrentOrder[pos], sorterCurrentOrder[dragSrcIdx]];\n dragSrcIdx = null;\n renderSorterSteps(SORTER_DATA[currentQ]);\n }\n });\n\n container.appendChild(step);\n });\n}\n\nfunction sorterCheck() {\n const d = SORTER_DATA[currentQ];\n const correct = JSON.stringify(sorterCurrentOrder) === JSON.stringify(d.order);\n\n if (correct) {\n awardXP(15, true);\n document.getElementById('sorter-feedback').className = 'feedback-card correct show';\n document.getElementById('sorter-fb-title').textContent = '\u2705 \u0d36\u0d30\u0d3f\u0d2f\u0d3e\u0d2f \u0d15\u0d4d\u0d30\u0d2e\u0d02! (+15 XP)';\n document.getElementById('sorter-fb-text').textContent = 'BODMAS logic \u0d09\u0d2a\u0d2f\u0d4b\u0d17\u0d3f\u0d1a\u0d4d\u0d1a\u0d4d \u0d18\u0d1f\u0d4d\u0d1f\u0d19\u0d4d\u0d19\u0d7e \u0d15\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d7d \u0d1a\u0d46\u0d2f\u0d4d\u0d24\u0d41!';\n } else {\n awardXP(0, false);\n document.getElementById('sorter-feedback').className = 'feedback-card wrong show';\n document.getElementById('sorter-fb-title').textContent = '\u274c \u0d15\u0d4d\u0d30\u0d2e\u0d02 \u0d36\u0d30\u0d3f\u0d2f\u0d32\u0d4d\u0d32';\n document.getElementById('sorter-fb-text').textContent = '\u0d36\u0d30\u0d3f\u0d2f\u0d3e\u0d2f \u0d15\u0d4d\u0d30\u0d2e\u0d02: ' + d.order.map(i => d.steps[i]).join(' \u2192 ');\n }\n\n const tipEl = document.getElementById('sorter-tip');\n tipEl.innerHTML = '<strong>\ud83d\udca1 PSC Tip:<\/strong> ' + d.tip;\n tipEl.className = 'psc-tip show';\n\n document.getElementById('sorter-check').style.display = 'none';\n document.getElementById('sorter-next').style.display = 'flex';\n updateActivityXPBadge('sorter-xp-badge');\n}\n\nfunction sorterNext() {\n currentQ++;\n if (currentQ >= SORTER_DATA.length) {\n showResult('sorter', 15);\n } else {\n dragSrcIdx = null;\n renderSorter();\n }\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ RAPID FIRE ACTIVITY\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nlet rfTimer = null;\nlet rfTimeLeft = 10;\nlet rfAnswered = false;\n\nfunction initRapid() {\n showScreen('rapid');\n rfAnswered = false;\n renderRapid();\n}\n\nfunction renderRapid() {\n const d = RAPID_DATA[currentQ];\n document.getElementById('rf-counter').textContent = (currentQ + 1) + '\/' + RAPID_DATA.length;\n document.getElementById('rf-question').textContent = d.q;\n\n const optsEl = document.getElementById('rf-options');\n optsEl.innerHTML = '';\n d.opts.forEach((opt, i) => {\n const btn = document.createElement('div');\n btn.className = 'rf-opt';\n btn.textContent = opt;\n btn.onclick = () => rfAnswer(i);\n optsEl.appendChild(btn);\n });\n\n document.getElementById('rf-feedback').className = 'feedback-card';\n rfAnswered = false;\n startRFTimer();\n}\n\nfunction startRFTimer() {\n clearInterval(rfTimer);\n rfTimeLeft = 10;\n updateRFTimer();\n rfTimer = setInterval(() => {\n rfTimeLeft--;\n updateRFTimer();\n if (rfTimeLeft <= 0) {\n clearInterval(rfTimer);\n if (!rfAnswered) {\n rfAnswer(-1);\n }\n }\n }, 1000);\n}\n\nfunction updateRFTimer() {\n document.getElementById('rf-timer-num').textContent = rfTimeLeft;\n const arc = document.getElementById('rf-timer-arc');\n const circumference = 251.2;\n const offset = circumference * (1 - rfTimeLeft \/ 10);\n arc.style.strokeDashoffset = offset;\n arc.style.stroke = rfTimeLeft <= 3 ? '#ef476f' : rfTimeLeft <= 6 ? '#f4b942' : '#06d6a0';\n}\n\nfunction rfAnswer(idx) {\n if (rfAnswered) return;\n rfAnswered = true;\n clearInterval(rfTimer);\n\n const d = RAPID_DATA[currentQ];\n const correct = idx === d.ans;\n const opts = document.querySelectorAll('.rf-opt');\n\n opts.forEach((o, i) => {\n o.style.pointerEvents = 'none';\n if (i === d.ans) o.classList.add('rf-correct');\n else if (i === idx && !correct) o.classList.add('rf-wrong');\n });\n\n if (correct) {\n awardXP(10, true);\n document.getElementById('rf-feedback').className = 'feedback-card correct show';\n document.getElementById('rf-fb-title').textContent = '\u26a1 Fast & Correct! (+10 XP)';\n } else {\n awardXP(0, false);\n document.getElementById('rf-feedback').className = 'feedback-card wrong show';\n document.getElementById('rf-fb-title').textContent = idx === -1 ? '\u23f1\ufe0f Time Out!' : '\u274c \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d!';\n }\n document.getElementById('rf-fb-text').textContent = d.exp;\n updateActivityXPBadge('rf-xp-badge');\n\n setTimeout(() => {\n currentQ++;\n if (currentQ >= RAPID_DATA.length) {\n showResult('rapid', 10);\n } else {\n renderRapid();\n }\n }, 1800);\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ ERROR SPOTTER ACTIVITY\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction initError() {\n showScreen('error');\n renderError();\n}\n\nfunction renderError() {\n const d = ERROR_DATA[currentQ];\n document.getElementById('err-q').textContent = d.q;\n document.getElementById('err-counter').textContent = (currentQ + 1) + '\/' + ERROR_DATA.length;\n\n const container = document.getElementById('err-steps');\n container.innerHTML = '';\n d.steps.forEach((step, i) => {\n const el = document.createElement('div');\n el.className = 'err-step';\n el.innerHTML = `<span class=\"err-step-num\">Step ${i + 1}<\/span><span class=\"err-step-content\">${step.text}<\/span>`;\n el.onclick = () => errTap(i, el);\n container.appendChild(el);\n });\n\n document.getElementById('err-feedback').className = 'feedback-card';\n document.getElementById('err-tip').className = 'psc-tip';\n document.getElementById('err-next').style.display = 'none';\n}\n\nfunction errTap(idx, el) {\n const d = ERROR_DATA[currentQ];\n const allSteps = document.querySelectorAll('.err-step');\n allSteps.forEach(s => s.style.pointerEvents = 'none');\n\n if (idx === d.wrongIdx) {\n el.classList.add('correct-pick');\n awardXP(15, true);\n document.getElementById('err-feedback').className = 'feedback-card correct show';\n document.getElementById('err-fb-title').textContent = '\ud83d\udd0d \u0d36\u0d30\u0d3f \u0d15\u0d23\u0d4d\u0d1f\u0d46\u0d24\u0d4d\u0d24\u0d3f! (+15 XP)';\n } else {\n el.classList.add('wrong-pick');\n allSteps[d.wrongIdx].classList.add('correct-pick');\n awardXP(0, false);\n document.getElementById('err-feedback').className = 'feedback-card wrong show';\n document.getElementById('err-fb-title').textContent = '\u274c Step ' + (d.wrongIdx + 1) + '-\u0d7d \u0d06\u0d23\u0d4d \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d!';\n }\n\n document.getElementById('err-fb-text').textContent = d.fb;\n const tipEl = document.getElementById('err-tip');\n tipEl.innerHTML = '<strong>\ud83d\udca1 PSC Tip:<\/strong> ' + d.tip;\n tipEl.className = 'psc-tip show';\n\n document.getElementById('err-next').style.display = 'flex';\n updateActivityXPBadge('err-xp-badge');\n}\n\nfunction errNext() {\n currentQ++;\n if (currentQ >= ERROR_DATA.length) {\n showResult('error', 15);\n } else {\n renderError();\n }\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ PSC PRACTICE ACTIVITY\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction initPSC() {\n showScreen('psc');\n renderPSC();\n}\n\nfunction renderPSC() {\n const d = PSC_DATA[currentQ];\n document.getElementById('psc-q-math').textContent = d.q;\n document.getElementById('psc-q-text').textContent = '';\n document.getElementById('psc-counter').textContent = (currentQ + 1) + '\/' + PSC_DATA.length;\n\n const optsEl = document.getElementById('psc-options');\n optsEl.innerHTML = '';\n const labels = ['A', 'B', 'C', 'D'];\n d.opts.forEach((opt, i) => {\n const btn = document.createElement('button');\n btn.className = 'opt-btn';\n btn.textContent = opt;\n btn.setAttribute('data-label', labels[i]);\n btn.onclick = () => pscAnswer(i, btn);\n optsEl.appendChild(btn);\n });\n\n document.getElementById('psc-feedback').className = 'feedback-card';\n document.getElementById('psc-steps').innerHTML = '';\n document.getElementById('psc-tip').className = 'psc-tip';\n document.getElementById('psc-next').style.display = 'none';\n}\n\nfunction pscAnswer(idx, btn) {\n const d = PSC_DATA[currentQ];\n const correct = idx === d.ans;\n\n document.querySelectorAll('.opt-btn').forEach((b, i) => {\n b.disabled = true;\n if (i === d.ans) b.classList.add('correct');\n else if (i === idx && !correct) b.classList.add('wrong');\n });\n\n if (correct) {\n awardXP(20, true);\n document.getElementById('psc-feedback').className = 'feedback-card correct show';\n document.getElementById('psc-fb-title').textContent = '\u2705 \u0d36\u0d30\u0d3f! (+20 XP)';\n } else {\n awardXP(0, false);\n document.getElementById('psc-feedback').className = 'feedback-card wrong show';\n document.getElementById('psc-fb-title').textContent = '\u274c \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d! \u0d36\u0d30\u0d3f Option: ' + ['A','B','C','D'][d.ans];\n }\n document.getElementById('psc-fb-text').textContent = d.elimination;\n\n const stepsEl = document.getElementById('psc-steps');\n d.steps.forEach(s => {\n const el = document.createElement('div');\n el.className = 'step-item';\n el.textContent = s;\n stepsEl.appendChild(el);\n });\n\n const tipEl = document.getElementById('psc-tip');\n tipEl.innerHTML = '<strong>\ud83d\udca1 PSC Tip:<\/strong> ' + d.tip;\n tipEl.className = 'psc-tip show';\n\n document.getElementById('psc-next').style.display = 'flex';\n updateActivityXPBadge('psc-xp-badge');\n}\n\nfunction pscNext() {\n currentQ++;\n if (currentQ >= PSC_DATA.length) {\n showResult('psc', 20);\n } else {\n renderPSC();\n }\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ INIT\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nupdateHUD();\nupdateHomeProgress();\n<\/script>\n<\/body>\n<\/html>\n","protected":false},"excerpt":{"rendered":"<p>WindopEdu \u2014 BODMAS & \u0d2a\u0d42\u0d7c\u0d23\u0d4d\u0d23\u0d38\u0d02\u0d16\u0d4d\u0d2f\u0d15\u0d7e + – \u00d7 \u00f7 = ( ) [ ] { } % \u221a \u00b2 \u00b3 \u2211 \u03c0 > < \u2260 \u2264 \u2265 \u221e + - 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\u00d7 \u00f7 = ( ) % \u221a + - \u00d7 \u00f7 = ( ) \u00b2 + - \u00d7 \u00f7 BODMAS = % \u221a ( )…","_links":{"self":[{"href":"https:\/\/windowedu.in\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/windowedu.in\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/windowedu.in\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/windowedu.in\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/windowedu.in\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3181"}],"version-history":[{"count":2,"href":"https:\/\/windowedu.in\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3181\/revisions"}],"predecessor-version":[{"id":3183,"href":"https:\/\/windowedu.in\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3181\/revisions\/3183"}],"wp:attachment":[{"href":"https:\/\/windowedu.in\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/windowedu.in\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/windowedu.in\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":3181,"date":"2026-04-23T12:08:37","date_gmt":"2026-04-23T08:08:37","guid":{"rendered":"https:\/\/windowedu.in\/blog\/?p=3181"},"modified":"2026-04-23T13:47:37","modified_gmt":"2026-04-23T09:47:37","slug":"pyqscert-maths-activity-1-1","status":"publish","type":"post","link":"https:\/\/windowedu.in\/blog\/?p=3181","title":{"rendered":"pyq+scert maths activity 1.1"},"content":{"rendered":"\n\n\n\n\n\nWindopEdu \u2014 BODMAS & \u0d2a\u0d42\u0d7c\u0d23\u0d4d\u0d23\u0d38\u0d02\u0d16\u0d4d\u0d2f\u0d15\u0d7e<\/title>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Noto+Sans+Malayalam:wght@400;600;700;900&family=Space+Mono:wght@400;700&display=swap\" rel=\"stylesheet\">\n<style>\n :root {\n --navy: #0d1b2a;\n --navy2: #132337;\n --navy3: #1a3050;\n --gold: #f4b942;\n --gold2: #ffd166;\n --teal: #06d6a0;\n --teal2: #0ac4a0;\n --red: #ef476f;\n --white: #f0f4f8;\n --text: #e8edf2;\n --muted: #7a9ab8;\n --card: rgba(255,255,255,0.06);\n --border: rgba(255,255,255,0.1);\n }\n\n * { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; }\n\n body {\n background: var(--navy);\n color: var(--text);\n font-family: 'Noto Sans Malayalam', sans-serif;\n min-height: 100vh;\n overflow-x: hidden;\n position: relative;\n }\n\n \/* Math symbols background *\/\n body::before {\n content: '';\n position: fixed;\n inset: 0;\n background-image: \n radial-gradient(ellipse at 20% 20%, rgba(6,214,160,0.08) 0%, transparent 60%),\n radial-gradient(ellipse at 80% 80%, rgba(244,185,66,0.07) 0%, transparent 60%);\n pointer-events: none;\n z-index: 0;\n }\n\n .math-bg {\n position: fixed;\n inset: 0;\n pointer-events: none;\n z-index: 0;\n overflow: hidden;\n opacity: 0.05;\n font-family: 'Space Mono', monospace;\n font-size: 1.4rem;\n color: var(--teal);\n display: flex;\n flex-wrap: wrap;\n gap: 28px;\n padding: 20px;\n align-content: flex-start;\n }\n\n #windopedu-app {\n position: relative;\n z-index: 1;\n max-width: 480px;\n margin: 0 auto;\n min-height: 100vh;\n display: flex;\n flex-direction: column;\n }\n\n \/* \u2500\u2500 SCREENS \u2500\u2500 *\/\n .screen { display: none; flex-direction: column; min-height: 100vh; padding: 20px 16px; animation: fadeIn 0.35s ease; }\n .screen.active { display: flex; }\n @keyframes fadeIn { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }\n\n \/* \u2500\u2500 HEADER \u2500\u2500 *\/\n .app-header {\n display: flex;\n align-items: center;\n justify-content: space-between;\n padding: 12px 0 20px;\n }\n\n .logo {\n font-family: 'Space Mono', monospace;\n font-weight: 700;\n font-size: 1.1rem;\n color: var(--gold);\n letter-spacing: 0.05em;\n }\n\n .logo span { color: var(--teal); }\n\n .hud {\n display: flex;\n gap: 10px;\n align-items: center;\n }\n\n .xp-badge {\n background: linear-gradient(135deg, var(--gold), #e8a020);\n color: var(--navy);\n font-family: 'Space Mono', monospace;\n font-weight: 700;\n font-size: 0.75rem;\n padding: 5px 10px;\n border-radius: 20px;\n letter-spacing: 0.03em;\n }\n\n .streak-badge {\n background: rgba(239,71,111,0.18);\n border: 1px solid rgba(239,71,111,0.4);\n color: #ff6b9d;\n font-size: 0.8rem;\n padding: 5px 10px;\n border-radius: 20px;\n font-family: 'Space Mono', monospace;\n }\n\n \/* \u2500\u2500 HOME SCREEN \u2500\u2500 *\/\n .hero-card {\n background: linear-gradient(135deg, var(--navy3), #0d2a3d);\n border: 1px solid var(--border);\n border-radius: 20px;\n padding: 28px 22px;\n margin-bottom: 24px;\n position: relative;\n overflow: hidden;\n }\n\n .hero-card::before {\n content: 'BODMAS';\n position: absolute;\n right: -10px;\n top: 50%;\n transform: translateY(-50%);\n font-family: 'Space Mono', monospace;\n font-size: 5rem;\n font-weight: 700;\n color: rgba(6,214,160,0.06);\n letter-spacing: -0.05em;\n line-height: 1;\n }\n\n .session-tag {\n font-family: 'Space Mono', monospace;\n font-size: 0.65rem;\n color: var(--teal);\n letter-spacing: 0.15em;\n text-transform: uppercase;\n margin-bottom: 8px;\n opacity: 0.9;\n }\n\n .hero-title {\n font-size: 1.5rem;\n font-weight: 900;\n line-height: 1.3;\n color: var(--white);\n margin-bottom: 6px;\n }\n\n .hero-sub {\n font-size: 0.9rem;\n color: var(--muted);\n line-height: 1.6;\n }\n\n .progress-row {\n display: flex;\n align-items: center;\n gap: 10px;\n margin-top: 18px;\n }\n\n .progress-bar {\n flex: 1;\n height: 6px;\n background: rgba(255,255,255,0.1);\n border-radius: 3px;\n overflow: hidden;\n }\n\n .progress-fill {\n height: 100%;\n background: linear-gradient(90deg, var(--teal), var(--gold));\n border-radius: 3px;\n transition: width 0.5s ease;\n }\n\n .progress-label {\n font-family: 'Space Mono', monospace;\n font-size: 0.7rem;\n color: var(--muted);\n }\n\n \/* \u2500\u2500 SECTION HEADING \u2500\u2500 *\/\n .section-label {\n font-family: 'Space Mono', monospace;\n font-size: 0.65rem;\n letter-spacing: 0.2em;\n text-transform: uppercase;\n color: var(--muted);\n margin-bottom: 12px;\n padding-left: 2px;\n }\n\n \/* \u2500\u2500 ACTIVITY CARDS (Home) \u2500\u2500 *\/\n .activity-grid {\n display: flex;\n flex-direction: column;\n gap: 10px;\n margin-bottom: 24px;\n }\n\n .act-card {\n background: var(--card);\n border: 1px solid var(--border);\n border-radius: 14px;\n padding: 16px 18px;\n display: flex;\n align-items: center;\n gap: 14px;\n cursor: pointer;\n transition: all 0.2s ease;\n position: relative;\n overflow: hidden;\n min-height: 72px;\n }\n\n .act-card:active { transform: scale(0.97); }\n .act-card:hover { border-color: rgba(255,255,255,0.2); background: rgba(255,255,255,0.09); }\n\n .act-card.concept { border-left: 3px solid #4cc9f0; }\n .act-card.speed { border-left: 3px solid var(--gold); }\n .act-card.accuracy { border-left: 3px solid var(--teal); }\n .act-card.done { opacity: 0.55; }\n\n .act-icon {\n width: 48px;\n height: 48px;\n border-radius: 12px;\n display: flex;\n align-items: center;\n justify-content: center;\n font-size: 1.5rem;\n flex-shrink: 0;\n }\n\n .concept .act-icon { background: rgba(76,201,240,0.12); }\n .speed .act-icon { background: rgba(244,185,66,0.12); }\n .accuracy .act-icon { background: rgba(6,214,160,0.12); }\n\n .act-info { flex: 1; }\n\n .act-name {\n font-weight: 700;\n font-size: 0.95rem;\n color: var(--white);\n margin-bottom: 3px;\n }\n\n .act-desc {\n font-size: 0.78rem;\n color: var(--muted);\n line-height: 1.4;\n }\n\n .act-xp {\n font-family: 'Space Mono', monospace;\n font-size: 0.7rem;\n font-weight: 700;\n color: var(--gold);\n background: rgba(244,185,66,0.1);\n padding: 3px 8px;\n border-radius: 10px;\n }\n\n .act-done-mark {\n position: absolute;\n top: 8px;\n right: 10px;\n font-size: 0.7rem;\n color: var(--teal);\n font-family: 'Space Mono', monospace;\n }\n\n \/* \u2500\u2500 BUTTONS \u2500\u2500 *\/\n .btn {\n display: inline-flex;\n align-items: center;\n justify-content: center;\n gap: 8px;\n padding: 16px 24px;\n border-radius: 14px;\n border: none;\n font-family: 'Noto Sans Malayalam', sans-serif;\n font-size: 1rem;\n font-weight: 700;\n cursor: pointer;\n transition: all 0.2s ease;\n min-height: 52px;\n width: 100%;\n position: relative;\n overflow: hidden;\n }\n\n .btn-primary {\n background: linear-gradient(135deg, var(--teal), #04c592);\n color: var(--navy);\n }\n\n .btn-primary:active { transform: scale(0.97); }\n\n .btn-gold {\n background: linear-gradient(135deg, var(--gold), #e8a020);\n color: var(--navy);\n }\n\n .btn-outline {\n background: transparent;\n border: 1.5px solid var(--border);\n color: var(--text);\n }\n\n .btn-outline:hover { border-color: rgba(255,255,255,0.3); }\n\n .btn:active { transform: scale(0.97); }\n\n \/* \u2500\u2500 BACK BUTTON \u2500\u2500 *\/\n .back-btn {\n background: none;\n border: none;\n color: var(--muted);\n font-size: 1.4rem;\n cursor: pointer;\n padding: 8px;\n margin-left: -8px;\n display: flex;\n align-items: center;\n gap: 6px;\n font-family: 'Noto Sans Malayalam', sans-serif;\n font-size: 0.85rem;\n }\n\n \/* \u2500\u2500 ACTIVITY SCREEN \u2500\u2500 *\/\n .act-header {\n display: flex;\n align-items: center;\n gap: 12px;\n margin-bottom: 24px;\n }\n\n .act-title-block { flex: 1; }\n\n .act-screen-name {\n font-family: 'Space Mono', monospace;\n font-size: 0.65rem;\n letter-spacing: 0.15em;\n text-transform: uppercase;\n margin-bottom: 4px;\n }\n\n .act-screen-name.concept { color: #4cc9f0; }\n .act-screen-name.speed { color: var(--gold); }\n .act-screen-name.accuracy { color: var(--teal); }\n\n .act-screen-title {\n font-size: 1.1rem;\n font-weight: 800;\n color: var(--white);\n }\n\n .q-counter {\n font-family: 'Space Mono', monospace;\n font-size: 0.75rem;\n color: var(--muted);\n background: var(--card);\n border: 1px solid var(--border);\n padding: 6px 12px;\n border-radius: 20px;\n }\n\n \/* \u2500\u2500 QUESTION CARD \u2500\u2500 *\/\n .q-card {\n background: var(--card);\n border: 1px solid var(--border);\n border-radius: 18px;\n padding: 22px 20px;\n margin-bottom: 20px;\n }\n\n .q-label {\n font-family: 'Space Mono', monospace;\n font-size: 0.65rem;\n letter-spacing: 0.12em;\n text-transform: uppercase;\n color: var(--muted);\n margin-bottom: 10px;\n }\n\n .q-text {\n font-size: 1.05rem;\n font-weight: 600;\n line-height: 1.65;\n color: var(--white);\n }\n\n .q-math {\n font-family: 'Space Mono', monospace;\n font-size: 1.15rem;\n color: var(--gold2);\n margin: 10px 0;\n line-height: 1.6;\n }\n\n \/* \u2500\u2500 OPTIONS \u2500\u2500 *\/\n .options-grid {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 10px;\n margin-bottom: 16px;\n }\n\n .opt-btn {\n background: var(--card);\n border: 1.5px solid var(--border);\n border-radius: 14px;\n padding: 16px 12px;\n color: var(--text);\n font-family: 'Space Mono', monospace;\n font-size: 0.95rem;\n font-weight: 700;\n cursor: pointer;\n transition: all 0.2s ease;\n min-height: 60px;\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n overflow: hidden;\n }\n\n .opt-btn:active { transform: scale(0.96); }\n\n .opt-btn.selected { border-color: var(--teal); background: rgba(6,214,160,0.12); color: var(--teal); }\n .opt-btn.correct { border-color: var(--teal); background: rgba(6,214,160,0.2); color: var(--teal); }\n .opt-btn.wrong { border-color: var(--red); background: rgba(239,71,111,0.15); color: var(--red); }\n .opt-btn:disabled { cursor: default; }\n\n .opt-btn::before {\n content: attr(data-label);\n position: absolute;\n top: 6px;\n left: 8px;\n font-size: 0.55rem;\n color: var(--muted);\n letter-spacing: 0.05em;\n }\n\n \/* \u2500\u2500 FEEDBACK CARD \u2500\u2500 *\/\n .feedback-card {\n border-radius: 14px;\n padding: 16px 18px;\n margin-bottom: 16px;\n display: none;\n animation: slideUp 0.3s ease;\n }\n\n .feedback-card.show { display: block; }\n @keyframes slideUp { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }\n\n .feedback-card.correct { background: rgba(6,214,160,0.1); border: 1px solid rgba(6,214,160,0.3); }\n .feedback-card.wrong { background: rgba(239,71,111,0.1); border: 1px solid rgba(239,71,111,0.3); }\n\n .feedback-title {\n font-weight: 800;\n font-size: 0.95rem;\n margin-bottom: 6px;\n }\n\n .feedback-card.correct .feedback-title { color: var(--teal); }\n .feedback-card.wrong .feedback-title { color: var(--red); }\n\n .feedback-text {\n font-size: 0.85rem;\n line-height: 1.65;\n color: var(--text);\n }\n\n .step-list {\n margin-top: 8px;\n display: flex;\n flex-direction: column;\n gap: 4px;\n }\n\n .step-item {\n font-family: 'Space Mono', monospace;\n font-size: 0.8rem;\n color: var(--gold2);\n padding: 4px 0;\n border-bottom: 1px solid rgba(255,255,255,0.06);\n }\n\n \/* \u2500\u2500 TRUE\/FALSE SWIPE \u2500\u2500 *\/\n .tf-card {\n background: linear-gradient(135deg, var(--navy3), #0d2a3d);\n border: 1px solid var(--border);\n border-radius: 20px;\n padding: 28px 22px;\n margin-bottom: 20px;\n text-align: center;\n }\n\n .tf-statement {\n font-size: 1.05rem;\n font-weight: 700;\n line-height: 1.6;\n color: var(--white);\n margin-bottom: 6px;\n }\n\n .tf-math {\n font-family: 'Space Mono', monospace;\n font-size: 1.1rem;\n color: var(--gold2);\n margin: 10px 0;\n }\n\n .tf-buttons {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 12px;\n margin-top: 20px;\n }\n\n .tf-btn {\n padding: 18px;\n border-radius: 14px;\n border: 2px solid;\n font-family: 'Noto Sans Malayalam', sans-serif;\n font-size: 1.05rem;\n font-weight: 800;\n cursor: pointer;\n transition: all 0.2s ease;\n min-height: 60px;\n }\n\n .tf-btn.true-btn { border-color: var(--teal); color: var(--teal); background: rgba(6,214,160,0.08); }\n .tf-btn.false-btn { border-color: var(--red); color: var(--red); background: rgba(239,71,111,0.08); }\n .tf-btn:active { transform: scale(0.96); }\n .tf-btn.selected-correct { background: rgba(6,214,160,0.25); }\n .tf-btn.selected-wrong { background: rgba(239,71,111,0.25); }\n\n \/* \u2500\u2500 STEP SORTER \u2500\u2500 *\/\n .steps-container {\n display: flex;\n flex-direction: column;\n gap: 8px;\n margin-bottom: 16px;\n }\n\n .step-drag {\n background: var(--card);\n border: 1.5px solid var(--border);\n border-radius: 12px;\n padding: 14px 16px;\n display: flex;\n align-items: center;\n gap: 12px;\n cursor: grab;\n user-select: none;\n font-size: 0.88rem;\n line-height: 1.5;\n color: var(--text);\n transition: all 0.2s;\n }\n\n .step-drag.dragging { opacity: 0.5; border-style: dashed; }\n .step-drag.over { border-color: var(--teal); background: rgba(6,214,160,0.08); }\n\n .drag-handle {\n color: var(--muted);\n font-size: 1.1rem;\n flex-shrink: 0;\n }\n\n .step-num {\n font-family: 'Space Mono', monospace;\n font-size: 0.75rem;\n font-weight: 700;\n color: var(--navy);\n background: var(--muted);\n width: 24px;\n height: 24px;\n border-radius: 50%;\n display: flex;\n align-items: center;\n justify-content: center;\n flex-shrink: 0;\n }\n\n \/* \u2500\u2500 ERROR SPOTTER \u2500\u2500 *\/\n .err-steps {\n display: flex;\n flex-direction: column;\n gap: 8px;\n margin-bottom: 16px;\n }\n\n .err-step {\n background: var(--card);\n border: 1.5px solid var(--border);\n border-radius: 12px;\n padding: 14px 16px;\n cursor: pointer;\n transition: all 0.2s;\n display: flex;\n align-items: flex-start;\n gap: 10px;\n }\n\n .err-step:active { transform: scale(0.98); }\n .err-step.highlighted { border-color: var(--gold); background: rgba(244,185,66,0.08); }\n .err-step.wrong-pick { border-color: var(--red); background: rgba(239,71,111,0.1); animation: shake 0.3s ease; }\n .err-step.correct-pick { border-color: var(--teal); background: rgba(6,214,160,0.12); }\n\n @keyframes shake { 0%,100%{transform:translateX(0)} 25%{transform:translateX(-4px)} 75%{transform:translateX(4px)} }\n\n .err-step-num {\n font-family: 'Space Mono', monospace;\n font-size: 0.72rem;\n font-weight: 700;\n color: var(--muted);\n flex-shrink: 0;\n margin-top: 2px;\n }\n\n .err-step-content {\n font-family: 'Space Mono', monospace;\n font-size: 0.88rem;\n color: var(--text);\n line-height: 1.5;\n }\n\n \/* \u2500\u2500 RAPID FIRE \u2500\u2500 *\/\n .rf-timer {\n width: 80px;\n height: 80px;\n border-radius: 50%;\n border: 3px solid var(--border);\n display: flex;\n align-items: center;\n justify-content: center;\n margin: 0 auto 20px;\n position: relative;\n font-family: 'Space Mono', monospace;\n font-size: 1.6rem;\n font-weight: 700;\n color: var(--gold);\n }\n\n .rf-timer svg {\n position: absolute;\n inset: -3px;\n transform: rotate(-90deg);\n }\n\n .rf-timer circle {\n fill: none;\n stroke-width: 3;\n stroke-linecap: round;\n transition: stroke-dashoffset 1s linear, stroke 0.3s;\n }\n\n .rf-q {\n text-align: center;\n font-family: 'Space Mono', monospace;\n font-size: 1.8rem;\n font-weight: 700;\n color: var(--white);\n margin-bottom: 20px;\n }\n\n .rf-options {\n display: grid;\n grid-template-columns: 1fr 1fr;\n gap: 10px;\n }\n\n .rf-opt {\n background: var(--card);\n border: 1.5px solid var(--border);\n border-radius: 14px;\n padding: 18px;\n text-align: center;\n font-family: 'Space Mono', monospace;\n font-size: 1.1rem;\n font-weight: 700;\n color: var(--text);\n cursor: pointer;\n transition: all 0.15s ease;\n min-height: 60px;\n display: flex;\n align-items: center;\n justify-content: center;\n }\n\n .rf-opt:active { transform: scale(0.96); }\n .rf-opt.rf-correct { background: rgba(6,214,160,0.2); border-color: var(--teal); color: var(--teal); }\n .rf-opt.rf-wrong { background: rgba(239,71,111,0.15); border-color: var(--red); color: var(--red); }\n\n \/* \u2500\u2500 RESULT SCREEN \u2500\u2500 *\/\n .result-screen {\n text-align: center;\n padding: 30px 20px;\n flex: 1;\n display: flex;\n flex-direction: column;\n align-items: center;\n justify-content: center;\n }\n\n .result-emoji { font-size: 4rem; margin-bottom: 16px; }\n\n .result-title {\n font-size: 1.8rem;\n font-weight: 900;\n color: var(--gold);\n margin-bottom: 8px;\n }\n\n .result-sub {\n color: var(--muted);\n font-size: 0.9rem;\n line-height: 1.6;\n margin-bottom: 28px;\n }\n\n .result-stats {\n display: grid;\n grid-template-columns: repeat(3, 1fr);\n gap: 12px;\n width: 100%;\n margin-bottom: 28px;\n }\n\n .stat-box {\n background: var(--card);\n border: 1px solid var(--border);\n border-radius: 14px;\n padding: 16px 10px;\n text-align: center;\n }\n\n .stat-val {\n font-family: 'Space Mono', monospace;\n font-size: 1.5rem;\n font-weight: 700;\n margin-bottom: 4px;\n }\n\n .stat-val.gold { color: var(--gold); }\n .stat-val.teal { color: var(--teal); }\n .stat-val.red { color: var(--red); }\n\n .stat-label { font-size: 0.72rem; color: var(--muted); }\n\n \/* \u2500\u2500 CONFETTI \u2500\u2500 *\/\n #confetti-container {\n position: fixed;\n top: 0; left: 0; right: 0;\n pointer-events: none;\n z-index: 999;\n overflow: hidden;\n height: 100vh;\n }\n\n .confetti-piece {\n position: absolute;\n width: 8px;\n height: 12px;\n top: -20px;\n animation: fall linear forwards;\n border-radius: 2px;\n }\n\n @keyframes fall {\n to { transform: translateY(110vh) rotate(720deg); opacity: 0; }\n }\n\n \/* \u2500\u2500 TOAST \u2500\u2500 *\/\n .toast {\n position: fixed;\n bottom: 24px;\n left: 50%;\n transform: translateX(-50%) translateY(80px);\n background: var(--navy3);\n border: 1px solid var(--border);\n border-radius: 12px;\n padding: 12px 20px;\n font-size: 0.9rem;\n font-weight: 600;\n color: var(--white);\n z-index: 100;\n transition: transform 0.3s ease;\n white-space: nowrap;\n box-shadow: 0 8px 30px rgba(0,0,0,0.4);\n }\n\n .toast.show { transform: translateX(-50%) translateY(0); }\n\n \/* \u2500\u2500 XP POPUP \u2500\u2500 *\/\n .xp-popup {\n position: fixed;\n top: 50%;\n left: 50%;\n transform: translate(-50%, -50%) scale(0);\n background: linear-gradient(135deg, var(--gold), #e8a020);\n color: var(--navy);\n font-family: 'Space Mono', monospace;\n font-size: 1.5rem;\n font-weight: 700;\n padding: 16px 28px;\n border-radius: 16px;\n z-index: 200;\n pointer-events: none;\n box-shadow: 0 12px 40px rgba(244,185,66,0.4);\n transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.2s;\n }\n\n .xp-popup.show { transform: translate(-50%, -50%) scale(1); }\n .xp-popup.hide { transform: translate(-50%, -80%) scale(0.8); opacity: 0; }\n\n \/* \u2500\u2500 DIVIDER \u2500\u2500 *\/\n .divider {\n height: 1px;\n background: var(--border);\n margin: 16px 0;\n }\n\n \/* PSC TIP *\/\n .psc-tip {\n background: rgba(244,185,66,0.08);\n border: 1px solid rgba(244,185,66,0.2);\n border-left: 3px solid var(--gold);\n border-radius: 10px;\n padding: 12px 14px;\n font-size: 0.82rem;\n line-height: 1.6;\n color: var(--text);\n margin-bottom: 16px;\n display: none;\n }\n\n .psc-tip.show { display: block; }\n .psc-tip strong { color: var(--gold); }\n\n \/* Completion badge *\/\n .done-badge {\n display: inline-flex;\n align-items: center;\n gap: 4px;\n background: rgba(6,214,160,0.12);\n border: 1px solid rgba(6,214,160,0.3);\n color: var(--teal);\n font-family: 'Space Mono', monospace;\n font-size: 0.65rem;\n padding: 3px 8px;\n border-radius: 20px;\n margin-top: 6px;\n }\n\n .home-btn-row {\n margin-top: auto;\n padding-top: 20px;\n }\n<\/style>\n<\/head>\n<body>\n\n<div class=\"math-bg\" aria-hidden=\"true\">\n + – \u00d7 \u00f7 = ( ) [ ] { } % \u221a \u00b2 \u00b3 \u2211 \u03c0 > < \u2260 \u2264 \u2265 \u221e + - \u00d7 \u00f7 = ( ) % \u221a + - \u00d7 \u00f7 = ( ) \u00b2\n + - \u00d7 \u00f7 BODMAS = % \u221a ( ) [ ] + - \u00d7 \u00f7 = % \u221a \u00b2 \u00b3 \u2211 \u2260 \u2264 \u2265 + - \u00d7 \u00f7 = % \u221a \u221e + - \u00d7 \u00f7\n<\/div>\n\n<div id=\"confetti-container\"><\/div>\n<div class=\"toast\" id=\"toast\"><\/div>\n<div class=\"xp-popup\" id=\"xp-popup\">+10 XP \u2b50<\/div>\n\n<div id=\"windopedu-app\">\n\n \n <div class=\"screen active\" id=\"screen-home\">\n <div class=\"app-header\">\n <div class=\"logo\">Windop<span>Edu<\/span><\/div>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"hud-xp\">0 XP<\/div>\n <div class=\"streak-badge\" id=\"hud-streak\">\ud83d\udd25 0<\/div>\n <\/div>\n <\/div>\n\n <div class=\"hero-card\">\n <div class=\"session-tag\">SESSION 1 & 2<\/div>\n <div class=\"hero-title\">BODMAS & \u0d2a\u0d42\u0d7c\u0d23\u0d4d\u0d23\u0d38\u0d02\u0d16\u0d4d\u0d2f\u0d15\u0d7e<\/div>\n <div class=\"hero-sub\">Integers, Sign Rules, Vinculum, Block Method<\/div>\n <div class=\"progress-row\">\n <div class=\"progress-bar\">\n <div class=\"progress-fill\" id=\"overall-progress\" style=\"width:0%\"><\/div>\n <\/div>\n <div class=\"progress-label\" id=\"progress-label\">0\/5 \u0d2a\u0d42\u0d7c\u0d24\u0d4d\u0d24\u0d3f\u0d2f\u0d3e\u0d2f\u0d3f<\/div>\n <\/div>\n <\/div>\n\n <div class=\"section-label\">\ud83d\udcd7 Concept & Logic<\/div>\n <div class=\"activity-grid\">\n <div class=\"act-card concept\" id=\"card-tf\" onclick=\"goActivity('tf')\">\n <div class=\"act-icon\">\ud83d\udd00<\/div>\n <div class=\"act-info\">\n <div class=\"act-name\">True\/False Property<\/div>\n <div class=\"act-desc\">\u0d1a\u0d3f\u0d39\u0d4d\u0d28 \u0d28\u0d3f\u0d2f\u0d2e\u0d19\u0d4d\u0d19\u0d7e \u0d36\u0d30\u0d3f\u0d2f\u0d4b \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4b?<\/div>\n <\/div>\n <div class=\"act-xp\">+10 XP<\/div>\n <\/div>\n <div class=\"act-card concept\" id=\"card-sorter\" onclick=\"goActivity('sorter')\">\n <div class=\"act-icon\">\ud83d\udccb<\/div>\n <div class=\"act-info\">\n <div class=\"act-name\">Step Sorter<\/div>\n <div class=\"act-desc\">BODMAS \u0d18\u0d1f\u0d4d\u0d1f\u0d19\u0d4d\u0d19\u0d7e \u0d15\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d7d \u0d05\u0d1f\u0d41\u0d15\u0d4d\u0d15\u0d41\u0d15<\/div>\n <\/div>\n <div class=\"act-xp\">+15 XP<\/div>\n <\/div>\n <\/div>\n\n <div class=\"section-label\">\u26a1 Speed Boosters<\/div>\n <div class=\"activity-grid\">\n <div class=\"act-card speed\" id=\"card-rapid\" onclick=\"goActivity('rapid')\">\n <div class=\"act-icon\">\u26a1<\/div>\n <div class=\"act-info\">\n <div class=\"act-name\">Rapid Fire<\/div>\n <div class=\"act-desc\">10 \u0d38\u0d46\u0d15\u0d4d\u0d15\u0d7b\u0d21\u0d3f\u0d7d BODMAS \u0d15\u0d23\u0d15\u0d4d\u0d15\u0d41\u0d15\u0d7e<\/div>\n <\/div>\n <div class=\"act-xp\">+20 XP<\/div>\n <\/div>\n <\/div>\n\n <div class=\"section-label\">\ud83c\udfaf Accuracy & Skill<\/div>\n <div class=\"activity-grid\">\n <div class=\"act-card accuracy\" id=\"card-error\" onclick=\"goActivity('error')\">\n <div class=\"act-icon\">\ud83d\udd0d<\/div>\n <div class=\"act-info\">\n <div class=\"act-name\">Error Spotter<\/div>\n <div class=\"act-desc\">\u0d24\u0d46\u0d31\u0d4d\u0d31\u0d41\u0d33\u0d4d\u0d33 Step \u0d15\u0d23\u0d4d\u0d1f\u0d46\u0d24\u0d4d\u0d24\u0d41\u0d15<\/div>\n <\/div>\n <div class=\"act-xp\">+15 XP<\/div>\n <\/div>\n <div class=\"act-card accuracy\" id=\"card-psc\" onclick=\"goActivity('psc')\">\n <div class=\"act-icon\">\ud83d\udcdd<\/div>\n <div class=\"act-info\">\n <div class=\"act-name\">PSC Practice<\/div>\n <div class=\"act-desc\">\u0d2e\u0d41\u0d7b \u0d35\u0d7c\u0d37 \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d19\u0d4d\u0d19\u0d7e \u2014 Option Elimination<\/div>\n <\/div>\n <div class=\"act-xp\">+20 XP<\/div>\n <\/div>\n <\/div>\n\n <div class=\"home-btn-row\"><\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-tf\">\n <div class=\"app-header\">\n <button class=\"back-btn\" onclick=\"goHome()\">\u2190 \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d1a\u0d4d<\/button>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"tf-xp-badge\">0 XP<\/div>\n <\/div>\n <\/div>\n <div class=\"act-header\">\n <div class=\"act-title-block\">\n <div class=\"act-screen-name concept\">Concept & Logic<\/div>\n <div class=\"act-screen-title\">True\/False Property \ud83d\udd00<\/div>\n <\/div>\n <div class=\"q-counter\" id=\"tf-counter\">1\/5<\/div>\n <\/div>\n\n <div class=\"tf-card\" id=\"tf-card\">\n <div class=\"q-label\">\u0d08 statement \u0d36\u0d30\u0d3f\u0d2f\u0d4b \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4b?<\/div>\n <div class=\"tf-statement\" id=\"tf-stmt\"><\/div>\n <div class=\"tf-math\" id=\"tf-math\"><\/div>\n <\/div>\n\n <div class=\"tf-buttons\">\n <button class=\"tf-btn true-btn\" id=\"tf-true\" onclick=\"tfAnswer(true)\">\u2713 \u0d36\u0d30\u0d3f<\/button>\n <button class=\"tf-btn false-btn\" id=\"tf-false\" onclick=\"tfAnswer(false)\">\u2717 \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d<\/button>\n <\/div>\n\n <div class=\"feedback-card\" id=\"tf-feedback\">\n <div class=\"feedback-title\" id=\"tf-fb-title\"><\/div>\n <div class=\"feedback-text\" id=\"tf-fb-text\"><\/div>\n <\/div>\n\n <div class=\"psc-tip\" id=\"tf-tip\"><\/div>\n\n <div style=\"margin-top:auto; padding-top:16px;\">\n <button class=\"btn btn-primary\" id=\"tf-next\" onclick=\"tfNext()\" style=\"display:none\">\u0d05\u0d1f\u0d41\u0d24\u0d4d\u0d24 \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d02 \u2192<\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-sorter\">\n <div class=\"app-header\">\n <button class=\"back-btn\" onclick=\"goHome()\">\u2190 \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d15\u0d4d<\/button>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"sorter-xp-badge\">0 XP<\/div>\n <\/div>\n <\/div>\n <div class=\"act-header\">\n <div class=\"act-title-block\">\n <div class=\"act-screen-name concept\">Concept & Logic<\/div>\n <div class=\"act-screen-title\">Step Sorter \ud83d\udccb<\/div>\n <\/div>\n <div class=\"q-counter\" id=\"sorter-counter\">1\/3<\/div>\n <\/div>\n\n <div class=\"q-card\">\n <div class=\"q-label\">\u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d02<\/div>\n <div class=\"q-math\" id=\"sorter-q\"><\/div>\n <div class=\"q-text\" style=\"font-size:0.85rem; color:var(--muted); margin-top:6px;\">\u0d24\u0d3e\u0d34\u0d46 \u0d09\u0d33\u0d4d\u0d33 Steps \u0d36\u0d30\u0d3f\u0d2f\u0d3e\u0d2f \u0d15\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d7d Drag \u0d1a\u0d46\u0d2f\u0d4d\u0d24\u0d4d \u0d05\u0d1f\u0d41\u0d15\u0d4d\u0d15\u0d41\u0d15<\/div>\n <\/div>\n\n <div class=\"steps-container\" id=\"sorter-steps\"><\/div>\n\n <div class=\"feedback-card\" id=\"sorter-feedback\">\n <div class=\"feedback-title\" id=\"sorter-fb-title\"><\/div>\n <div class=\"feedback-text\" id=\"sorter-fb-text\"><\/div>\n <\/div>\n\n <div class=\"psc-tip\" id=\"sorter-tip\"><\/div>\n\n <div style=\"margin-top:auto; padding-top:16px; display:flex; gap:10px;\">\n <button class=\"btn btn-outline\" id=\"sorter-check\" onclick=\"sorterCheck()\">\u2713 \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 \u0d2a\u0d30\u0d3f\u0d36\u0d4b\u0d27\u0d3f\u0d15\u0d4d\u0d15\u0d41\u0d15<\/button>\n <button class=\"btn btn-primary\" id=\"sorter-next\" onclick=\"sorterNext()\" style=\"display:none; flex:1;\">\u0d05\u0d1f\u0d41\u0d24\u0d4d\u0d24 \u2192<\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-rapid\">\n <div class=\"app-header\">\n <button class=\"back-btn\" onclick=\"goHome()\">\u2190 \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d15\u0d4d<\/button>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"rf-xp-badge\">0 XP<\/div>\n <\/div>\n <\/div>\n <div class=\"act-header\">\n <div class=\"act-title-block\">\n <div class=\"act-screen-name speed\">Speed Booster<\/div>\n <div class=\"act-screen-title\">Rapid Fire \u26a1<\/div>\n <\/div>\n <div class=\"q-counter\" id=\"rf-counter\">1\/6<\/div>\n <\/div>\n\n <div class=\"rf-timer\" id=\"rf-timer-display\">\n <svg width=\"86\" height=\"86\" viewBox=\"0 0 86 86\">\n <circle id=\"rf-timer-bg\" cx=\"43\" cy=\"43\" r=\"40\" stroke=\"rgba(255,255,255,0.08)\" stroke-width=\"3\"\/>\n <circle id=\"rf-timer-arc\" cx=\"43\" cy=\"43\" r=\"40\" stroke=\"#f4b942\" stroke-width=\"3\"\n stroke-dasharray=\"251.2\" stroke-dashoffset=\"0\"\/>\n <\/svg>\n <span id=\"rf-timer-num\">10<\/span>\n <\/div>\n\n <div class=\"rf-q\" id=\"rf-question\">?<\/div>\n\n <div class=\"rf-options\" id=\"rf-options\"><\/div>\n\n <div class=\"feedback-card\" id=\"rf-feedback\" style=\"margin-top:12px;\">\n <div class=\"feedback-title\" id=\"rf-fb-title\"><\/div>\n <div class=\"feedback-text\" id=\"rf-fb-text\"><\/div>\n <\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-error\">\n <div class=\"app-header\">\n <button class=\"back-btn\" onclick=\"goHome()\">\u2190 \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d15\u0d4d<\/button>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"err-xp-badge\">0 XP<\/div>\n <\/div>\n <\/div>\n <div class=\"act-header\">\n <div class=\"act-title-block\">\n <div class=\"act-screen-name accuracy\">Accuracy & Skill<\/div>\n <div class=\"act-screen-title\">Error Spotter \ud83d\udd0d<\/div>\n <\/div>\n <div class=\"q-counter\" id=\"err-counter\">1\/3<\/div>\n <\/div>\n\n <div class=\"q-card\">\n <div class=\"q-label\">\u0d07\u0d24\u0d3f\u0d7d \u0d12\u0d30\u0d41 Step-\u0d7d \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d \u0d09\u0d23\u0d4d\u0d1f\u0d4d \u2014 \u0d0f\u0d24\u0d4d Step \u0d06\u0d23\u0d4d \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d?<\/div>\n <div class=\"q-math\" id=\"err-q\"><\/div>\n <\/div>\n\n <div class=\"err-steps\" id=\"err-steps\"><\/div>\n\n <div class=\"feedback-card\" id=\"err-feedback\">\n <div class=\"feedback-title\" id=\"err-fb-title\"><\/div>\n <div class=\"feedback-text\" id=\"err-fb-text\"><\/div>\n <\/div>\n\n <div class=\"psc-tip\" id=\"err-tip\"><\/div>\n\n <div style=\"margin-top:auto; padding-top:16px;\">\n <button class=\"btn btn-primary\" id=\"err-next\" onclick=\"errNext()\" style=\"display:none\">\u0d05\u0d1f\u0d41\u0d24\u0d4d\u0d24 \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d02 \u2192<\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-psc\">\n <div class=\"app-header\">\n <button class=\"back-btn\" onclick=\"goHome()\">\u2190 \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d15\u0d4d<\/button>\n <div class=\"hud\">\n <div class=\"xp-badge\" id=\"psc-xp-badge\">0 XP<\/div>\n <\/div>\n <\/div>\n <div class=\"act-header\">\n <div class=\"act-title-block\">\n <div class=\"act-screen-name accuracy\">PSC Practice<\/div>\n <div class=\"act-screen-title\">Option Eliminator \ud83d\udcdd<\/div>\n <\/div>\n <div class=\"q-counter\" id=\"psc-counter\">1\/3<\/div>\n <\/div>\n\n <div class=\"q-card\">\n <div class=\"q-label\">\u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d02<\/div>\n <div class=\"q-math\" id=\"psc-q-math\"><\/div>\n <div class=\"q-text\" id=\"psc-q-text\"><\/div>\n <\/div>\n\n <div class=\"options-grid\" id=\"psc-options\"><\/div>\n\n <div class=\"feedback-card\" id=\"psc-feedback\">\n <div class=\"feedback-title\" id=\"psc-fb-title\"><\/div>\n <div class=\"feedback-text\" id=\"psc-fb-text\"><\/div>\n <div class=\"step-list\" id=\"psc-steps\"><\/div>\n <\/div>\n\n <div class=\"psc-tip\" id=\"psc-tip\"><\/div>\n\n <div style=\"margin-top:auto; padding-top:16px;\">\n <button class=\"btn btn-primary\" id=\"psc-next\" onclick=\"pscNext()\" style=\"display:none\">\u0d05\u0d1f\u0d41\u0d24\u0d4d\u0d24 \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d02 \u2192<\/button>\n <\/div>\n <\/div>\n\n \n <div class=\"screen\" id=\"screen-result\">\n <div class=\"app-header\">\n <div class=\"logo\">Windop<span>Edu<\/span><\/div>\n <\/div>\n <div class=\"result-screen\">\n <div class=\"result-emoji\" id=\"result-emoji\">\ud83c\udfc6<\/div>\n <div class=\"result-title\" id=\"result-title\">\u0d2e\u0d3f\u0d15\u0d1a\u0d4d\u0d1a \u0d2a\u0d4d\u0d30\u0d15\u0d1f\u0d28\u0d02!<\/div>\n <div class=\"result-sub\" id=\"result-sub\">\u0d28\u0d3f\u0d19\u0d4d\u0d19\u0d7e \u0d08 Activity \u0d2d\u0d02\u0d17\u0d3f\u0d2f\u0d3e\u0d2f\u0d3f \u0d2a\u0d42\u0d7c\u0d24\u0d4d\u0d24\u0d3f\u0d2f\u0d3e\u0d15\u0d4d\u0d15\u0d3f!<\/div>\n <div class=\"result-stats\">\n <div class=\"stat-box\">\n <div class=\"stat-val gold\" id=\"res-xp\">0<\/div>\n <div class=\"stat-label\">XP \u0d28\u0d47\u0d1f\u0d3f<\/div>\n <\/div>\n <div class=\"stat-box\">\n <div class=\"stat-val teal\" id=\"res-correct\">0<\/div>\n <div class=\"stat-label\">\u0d36\u0d30\u0d3f \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02<\/div>\n <\/div>\n <div class=\"stat-box\">\n <div class=\"stat-val red\" id=\"res-wrong\">0<\/div>\n <div class=\"stat-label\">\u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d<\/div>\n <\/div>\n <\/div>\n <button class=\"btn btn-gold\" onclick=\"goHome()\" style=\"max-width:320px\">\ud83c\udfe0 Home-\u0d32\u0d47\u0d15\u0d4d\u0d15\u0d4d \u0d24\u0d3f\u0d30\u0d3f\u0d1a\u0d4d\u0d1a\u0d41\u0d2a\u0d4b\u0d15\u0d41\u0d15<\/button>\n <div style=\"height:12px;\"><\/div>\n <button class=\"btn btn-outline\" id=\"retry-btn\" style=\"max-width:320px\">\u21ba \u0d35\u0d40\u0d23\u0d4d\u0d1f\u0d41\u0d02 \u0d36\u0d4d\u0d30\u0d2e\u0d3f\u0d15\u0d4d\u0d15\u0d41\u0d15<\/button>\n <\/div>\n <\/div>\n\n<\/div>\n\n<script>\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ STATE\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nlet totalXP = 0;\nlet streak = 0;\nlet completedActivities = new Set();\nlet currentActivity = null;\nlet currentQ = 0;\nlet sessionCorrect = 0;\nlet sessionWrong = 0;\nlet sessionXP = 0;\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ DATA\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\nconst TF_DATA = [\n {\n stmt: \"(-) \u00d7 (-) = (+)\",\n math: \"\u0d09\u0d26\u0d3e: (-3) \u00d7 (-4) = 12\",\n answer: true,\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: \u0d17\u0d41\u0d23\u0d28\u0d24\u0d4d\u0d24\u0d3f\u0d7d\/\u0d39\u0d30\u0d23\u0d24\u0d4d\u0d24\u0d3f\u0d7d \u0d2e\u0d48\u0d28\u0d38\u0d4d \u0d1a\u0d3f\u0d39\u0d4d\u0d28\u0d02 \u0d07\u0d30\u0d1f\u0d4d\u0d1f \u0d24\u0d35\u0d23 \u0d35\u0d28\u0d4d\u0d28\u0d3e\u0d7d \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 \u0d0e\u0d2a\u0d4d\u0d2a\u0d4b\u0d34\u0d41\u0d02 Positive \u0d06\u0d15\u0d41\u0d02.\"\n },\n {\n stmt: \"(-) \u00d7 (+) = (+)\",\n math: \"\u0d09\u0d26\u0d3e: (-5) \u00d7 (3) = ?\",\n answer: false,\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: Negative \u00d7 Positive = Negative. \u0d12\u0d31\u0d4d\u0d31 \u0d2e\u0d48\u0d28\u0d38\u0d4d \u2192 \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 Negative.\"\n },\n {\n stmt: \"BODMAS-\u0d7d \u0d17\u0d41\u0d23\u0d28\u0d02 (\u00d7) \u0d15\u0d42\u0d1f\u0d4d\u0d1f\u0d32\u0d3f\u0d28\u0d4d (+ ) \u0d2e\u0d41\u0d7b\u0d2a\u0d4d \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d23\u0d02\",\n math: \"\u0d09\u0d26\u0d3e: 5 + 3 \u00d7 2 = 5 + 6 = 11 \u2713\",\n answer: true,\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: BODMAS = Brackets \u2192 Of \u2192 Division \u2192 Multiplication \u2192 Addition \u2192 Subtraction. \u0d17\u0d41\u0d23\u0d28\u0d02, \u0d39\u0d30\u0d23\u0d02 \u2014 \u0d07\u0d1f\u0d24\u0d4d\u0d24\u0d41\u0d28\u0d3f\u0d28\u0d4d\u0d28\u0d4d \u0d35\u0d32\u0d24\u0d4d\u0d24\u0d4b\u0d1f\u0d4d\u0d1f\u0d4d \u0d15\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d7d.\"\n },\n {\n stmt: \"Vinculum (\u0d2c\u0d3e\u0d7c) \u2014 \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d3f\u0d28\u0d4d \u0d36\u0d47\u0d37\u0d02 \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d23\u0d02\",\n math: \"V-BODMAS: Vinculum \u0d06\u0d26\u0d4d\u0d2f\u0d02!\",\n answer: false,\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: V-BODMAS-\u0d7d Vinculum (\u0d12\u0d30\u0d41 \u0d38\u0d02\u0d16\u0d4d\u0d2f\u0d15\u0d4d\u0d15\u0d4d \u0d2e\u0d41\u0d15\u0d33\u0d3f\u0d32\u0d46 \u0d2c\u0d3e\u0d7c) \u0d0f\u0d31\u0d4d\u0d31\u0d35\u0d41\u0d02 \u0d06\u0d26\u0d4d\u0d2f\u0d02 \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d23\u0d02 \u2014 \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d3f\u0d28\u0d41\u0d02 \u0d2e\u0d41\u0d7b\u0d2a\u0d4d.\"\n },\n {\n stmt: \"(-6) \u00f7 (-2) = -3\",\n math: \"Negative \u00f7 Negative = ?\",\n answer: false,\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: (-6) \u00f7 (-2) = +3. \u0d30\u0d23\u0d4d\u0d1f\u0d41\u0d02 Negative \u0d06\u0d2f\u0d3e\u0d7d \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 Positive. (-6) \u00f7 (+2) = -3 \u0d06\u0d15\u0d41\u0d02.\"\n }\n];\n\nconst SORTER_DATA = [\n {\n q: \"[(-12) + 4] \u00f7 [(-5) + 3] = ?\",\n steps: [\n \"\u0d39\u0d30\u0d23\u0d02: (-8) \u00f7 (-2) = 4\",\n \"\u0d06\u0d26\u0d4d\u0d2f \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d4d: (-12) + 4 = -8\",\n \"\u0d30\u0d23\u0d4d\u0d1f\u0d3e\u0d02 \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d4d: (-5) + 3 = -2\"\n ],\n order: [1, 2, 0],\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: \u0d12\u0d30\u0d47 \u0d24\u0d30\u0d02 \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d4d \u0d12\u0d28\u0d4d\u0d28\u0d3f\u0d32\u0d27\u0d3f\u0d15\u0d02 \u0d09\u0d23\u0d4d\u0d1f\u0d46\u0d19\u0d4d\u0d15\u0d3f\u0d7d \u0d07\u0d1f\u0d24\u0d4d\u0d24\u0d41\u0d28\u0d3f\u0d28\u0d4d\u0d28\u0d4d \u0d35\u0d32\u0d24\u0d4d\u0d24\u0d4b\u0d1f\u0d4d\u0d1f\u0d4d \u0d15\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d7d \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d23\u0d02.\"\n },\n {\n q: \"100 + 50 \u00f7 2 \u00d7 3 - 25 \u00d7 2 = ?\",\n steps: [\n \"\u0d15\u0d42\u0d1f\u0d4d\u0d1f\u0d7d\/\u0d15\u0d41\u0d31\u0d2f\u0d4d\u0d15\u0d4d\u0d15\u0d7d: 100 + 75 - 50 = 125\",\n \"50 \u00f7 2 = 25, \u0d2a\u0d3f\u0d28\u0d4d\u0d28\u0d46 25 \u00d7 3 = 75\",\n \"25 \u00d7 2 = 50\"\n ],\n order: [1, 2, 0],\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: Block Method \u2014 \u00f7 \u00d7 \u0d2d\u0d3e\u0d17\u0d19\u0d4d\u0d19\u0d7e \u0d2a\u0d4d\u0d30\u0d24\u0d4d\u0d2f\u0d47\u0d15\u0d02 Block \u0d06\u0d2f\u0d3f \u0d15\u0d23\u0d15\u0d4d\u0d15\u0d4d \u0d1a\u0d46\u0d2f\u0d4d\u0d24\u0d4d \u0d36\u0d47\u0d37\u0d02 + \u2212 \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d41\u0d15.\"\n },\n {\n q: \"25 \u2212 [20 \u2212 {10 \u2212 (7 \u2212 2)}] = ?\",\n steps: [\n \"\u0d0f\u0d31\u0d4d\u0d31\u0d35\u0d41\u0d02 \u0d09\u0d33\u0d4d\u0d33\u0d3f\u0d32\u0d46 (): 7 \u2212 2 = 5\",\n \"{}: 10 \u2212 5 = 5\",\n \"[]: 20 \u2212 5 = 15\",\n \"\u0d05\u0d35\u0d38\u0d3e\u0d28\u0d02: 25 \u2212 15 = 10\"\n ],\n order: [0, 1, 2, 3],\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: Nested \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d4d \u2192 \u0d0f\u0d31\u0d4d\u0d31\u0d35\u0d41\u0d02 \u0d09\u0d33\u0d4d\u0d33\u0d3f\u0d7d \u0d28\u0d3f\u0d28\u0d4d\u0d28\u0d4d \u0d2a\u0d41\u0d31\u0d24\u0d4d\u0d24\u0d47\u0d15\u0d4d\u0d15\u0d4d: ( ) \u2192 { } \u2192 [ ].\"\n }\n];\n\nconst RAPID_DATA = [\n { q: \"(-3) \u00d7 (-4) = ?\", opts: [\"12\", \"-12\", \"7\", \"-7\"], ans: 0, exp: \"Neg \u00d7 Neg = Pos \u2192 3\u00d74=12\" },\n { q: \"(-15) \u00f7 3 = ?\", opts: [\"-5\", \"5\", \"-45\", \"45\"], ans: 0, exp: \"Neg \u00f7 Pos = Neg \u2192 15\u00f73=5\" },\n { q: \"5 + 3 \u00d7 2 = ?\", opts: [\"16\", \"11\", \"10\", \"13\"], ans: 1, exp: \"BODMAS: \u00d7 \u0d06\u0d26\u0d4d\u0d2f\u0d02 \u2192 5+6=11\" },\n { q: \"(-8) \u2212 (\u221210) = ?\", opts: [\"\u22122\", \"2\", \"18\", \"\u221218\"], ans: 1, exp: \"\u2212(\u221210) = +10 \u2192 \u22128+10=2\" },\n { q: \"18 \u00f7 (\u22122) \u00d7 (\u22123) = ?\", opts: [\"\u221227\", \"27\", \"3\", \"\u22123\"], ans: 1, exp: \"18\u00f7(\u22122)=\u22129, then \u22129\u00d7(\u22123)=+27\" },\n { q: \"2 \u00d7 [3 + (4\u22121)] = ?\", opts: [\"12\", \"10\", \"14\", \"16\"], ans: 2, exp: \"Inner: 4\u22121=3, then 3+3=6, then 2\u00d76=12... wait: 3+3=6, 2\u00d76=12 \u2014 opt A=12\" }\n];\n\/\/ Fix last question\nRAPID_DATA[5] = { q: \"2 \u00d7 [3 + (4\u22121)] = ?\", opts: [\"12\", \"10\", \"14\", \"8\"], ans: 0, exp: \"(): 4\u22121=3 \u2192 []: 3+3=6 \u2192 2\u00d76=12\" };\n\nconst ERROR_DATA = [\n {\n q: \"[(-15) \u00f7 (-3)] \u00d7 [(-2) \u2212 1] = ?\",\n steps: [\n { text: \"Step 1: (-15) \u00f7 (-3) = -5\", wrong: true },\n { text: \"Step 2: (-2) \u2212 1 = -3\", wrong: false },\n { text: \"Step 3: (-5) \u00d7 (-3) = 15\", wrong: false }\n ],\n wrongIdx: 0,\n fb: \"Step 1-\u0d7d \u0d06\u0d23\u0d4d \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d! (-15) \u00f7 (-3) = +5 \u0d06\u0d15\u0d23\u0d02 (Neg \u00f7 Neg = Pos). Step 3-\u0d7d -5 \u0d09\u0d33\u0d4d\u0d33\u0d24\u0d4d \u0d15\u0d4a\u0d23\u0d4d\u0d1f\u0d4d \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 -15 \u0d06\u0d15\u0d41\u0d02.\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d24\u0d4d\u0d24\u0d3f\u0d7d Negative \u00f7 Negative \u0d15\u0d23\u0d4d\u0d1f\u0d3e\u0d7d \u0d09\u0d1f\u0d7b \u0d1a\u0d3f\u0d39\u0d4d\u0d28\u0d02 + \u0d06\u0d15\u0d4d\u0d15\u0d3f \u0d2e\u0d3e\u0d31\u0d4d\u0d31\u0d41\u0d15.\"\n },\n {\n q: \"15 + 3 \u00d7 2 \u2212 10 \u00f7 5 = ?\",\n steps: [\n { text: \"Step 1: 15 + 3 = 18 (\u0d15\u0d42\u0d1f\u0d4d\u0d1f\u0d7d \u0d06\u0d26\u0d4d\u0d2f\u0d02)\", wrong: true },\n { text: \"Step 2: 18 \u00d7 2 = 36\", wrong: false },\n { text: \"Step 3: 36 \u2212 10 \u00f7 5 = 34\", wrong: false }\n ],\n wrongIdx: 0,\n fb: \"Step 1 \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d! BODMAS-\u0d7d \u00f7 \u00d7 \u0d06\u0d26\u0d4d\u0d2f\u0d02. \u0d36\u0d30\u0d3f: 3\u00d72=6, 10\u00f75=2, \u0d36\u0d47\u0d37\u0d02 15+6\u22122=19.\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: \u0d2c\u0d4d\u0d30\u0d3e\u0d15\u0d4d\u0d15\u0d31\u0d4d\u0d31\u0d4d \u0d07\u0d32\u0d4d\u0d32\u0d3e\u0d24\u0d4d\u0d24 \u0d1a\u0d4b\u0d26\u0d4d\u0d2f\u0d24\u0d4d\u0d24\u0d3f\u0d7d \u00d7 \u00f7 \u0d06\u0d26\u0d4d\u0d2f\u0d02, + \u2212 \u0d12\u0d1f\u0d41\u0d35\u0d3f\u0d7d.\"\n },\n {\n q: \"[(-8) \u2212 (\u221210)] + [(\u22126) \u00f7 2] = ?\",\n steps: [\n { text: \"Step 1: (\u22128) \u2212 (\u221210) = \u221218 (\u2212 \u2212 = \u221218?)\", wrong: true },\n { text: \"Step 2: (\u22126) \u00f7 2 = \u22123\", wrong: false },\n { text: \"Step 3: \u221218 + (\u22123) = \u221221 (Step 1 \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d)\", wrong: false }\n ],\n wrongIdx: 0,\n fb: \"Step 1 \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d! (\u22128) \u2212 (\u221210) = \u22128 + 10 = +2. \u0d30\u0d23\u0d4d\u0d1f\u0d4d Minus \u0d12\u0d30\u0d41\u0d2e\u0d3f\u0d1a\u0d4d\u0d1a\u0d4d \u0d35\u0d28\u0d4d\u0d28\u0d3e\u0d7d Plus \u0d06\u0d15\u0d41\u0d02.\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: a \u2212 (\u2212b) = a + b. \u0d07\u0d24\u0d4d \u0d12\u0d30\u0d41 common mistake! Negative \u0d06\u0d26\u0d4d\u0d2f\u0d02 \u0d2a\u0d4d\u0d32\u0d38\u0d4d \u0d06\u0d15\u0d4d\u0d15\u0d3f \u0d13\u0d7c\u0d15\u0d4d\u0d15\u0d41\u0d15.\"\n }\n];\n\nconst PSC_DATA = [\n {\n q: \"[(-12) + 4] \u00f7 [(-5) + 3] = ?\",\n opts: [\"-4\", \"4\", \"2\", \"-2\"],\n ans: 1,\n steps: [\"Step 1: (\u221212)+4 = \u22128\", \"Step 2: (\u22125)+3 = \u22122\", \"Step 3: (\u22128)\u00f7(\u22122) = +4\"],\n elimination: \"A, D-\u0d7d \u22124, \u22122 \u2192 \u0d39\u0d30\u0d23\u0d02 Neg\u00f7Neg=Pos \u0d06\u0d23\u0d4d, Positive \u0d06\u0d15\u0d23\u0d02 \u2192 A,D \u0d12\u0d34\u0d3f\u0d35\u0d3e\u0d15\u0d4d\u0d15\u0d3e\u0d02. C-\u0d2f\u0d3f\u0d7d 2 \u2192 \u0d18\u0d1f\u0d15\u0d19\u0d4d\u0d19\u0d7e \u0d28\u0d4b\u0d15\u0d4d\u0d15\u0d3f\u0d2f\u0d3e\u0d7d 8\u00f72=4, 2 \u0d05\u0d32\u0d4d\u0d32. \u2234 B = 4 \u2713\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02 Positive \u0d06\u0d23\u0d4b Negative \u0d06\u0d23\u0d4b \u0d06\u0d26\u0d4d\u0d2f\u0d02 \u0d24\u0d40\u0d30\u0d41\u0d2e\u0d3e\u0d28\u0d3f\u0d15\u0d4d\u0d15\u0d42 \u2014 \u0d05\u0d24\u0d4d \u0d2e\u0d3e\u0d24\u0d4d\u0d30\u0d02 \u0d28\u0d4b\u0d15\u0d4d\u0d15\u0d3f 2 Options \u0d12\u0d34\u0d3f\u0d35\u0d3e\u0d15\u0d4d\u0d15\u0d3e\u0d02!\"\n },\n {\n q: \"100 + 50 \u00f7 2 \u00d7 3 \u2212 25 \u00d7 2 = ?\",\n opts: [\"225\", \"125\", \"150\", \"175\"],\n ans: 1,\n steps: [\"Block 1: 100\", \"Block 2: 50\u00f72\u00d73 = 25\u00d73 = 75\", \"Block 3: 25\u00d72 = 50\", \"Final: 100+75\u221250 = 125\"],\n elimination: \"A=225 \u2192 100+ \u0d12\u0d15\u0d4d\u0d15\u0d46 \u0d15\u0d42\u0d1f\u0d3f\u0d2f\u0d3e\u0d7d 225 \u0d06\u0d15\u0d3f\u0d32\u0d4d\u0d32 (Block Method \u0d09\u0d2a\u0d2f\u0d4b\u0d17\u0d3f\u0d15\u0d4d\u0d15\u0d42). C=150 \u2192 100+75=175 \u0d2e\u0d3e\u0d24\u0d4d\u0d30\u0d02; 50 \u0d15\u0d42\u0d1f\u0d3f \u0d15\u0d41\u0d31\u0d2f\u0d4d\u0d15\u0d4d\u0d15\u0d23\u0d02. B=125 \u2713\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: Block Method \u2014 +, \u2212 \u0d1a\u0d3f\u0d39\u0d4d\u0d28\u0d02 \u0d15\u0d3e\u0d23\u0d41\u0d2e\u0d4d\u0d2a\u0d4b\u0d7e block-\u0d09\u0d15\u0d7e \u0d09\u0d23\u0d4d\u0d1f\u0d3e\u0d15\u0d4d\u0d15\u0d41\u0d15; \u0d13\u0d30\u0d4b block-\u0d09\u0d02 \u00f7 \u00d7 \u0d06\u0d26\u0d4d\u0d2f\u0d02 \u0d1a\u0d46\u0d2f\u0d4d\u0d15.\"\n },\n {\n q: \"15 + 3 \u00d7 2 \u2212 10 \u00f7 5 = ?\",\n opts: [\"17\", \"19\", \"21\", \"15\"],\n ans: 1,\n steps: [\"10\u00f75 = 2\", \"3\u00d72 = 6\", \"15 + 6 \u2212 2 = 19\"],\n elimination: \"D=15 \u2192 + \u0d09\u0d23\u0d4d\u0d1f\u0d4d, 15 \u0d2e\u0d3e\u0d24\u0d4d\u0d30\u0d02 \u0d06\u0d15\u0d3f\u0d32\u0d4d\u0d32. A=17 \u2192 15+6=21; 21\u22122=19 (17 \u0d05\u0d32\u0d4d\u0d32). C=21 \u2192 \u0d15\u0d41\u0d31\u0d2f\u0d4d\u0d15\u0d4d\u0d15\u0d7d \u0d1a\u0d46\u0d2f\u0d4d\u0d2f\u0d47\u0d23\u0d4d\u0d1f\u0d24\u0d4d miss \u0d06\u0d2f\u0d3f. B=19 \u2713\",\n tip: \"PSC \u0d28\u0d41\u0d31\u0d41\u0d19\u0d4d\u0d19\u0d4d: Unit Digit Method: 15+6=21, 21\u22122=19. \u0d05\u0d35\u0d38\u0d3e\u0d28 \u0d05\u0d15\u0d4d\u0d15\u0d02 9 \u2192 Option B \u0d2e\u0d3e\u0d24\u0d4d\u0d30\u0d02 9-\u0d7d \u0d05\u0d35\u0d38\u0d3e\u0d28\u0d3f\u0d15\u0d4d\u0d15\u0d41\u0d28\u0d4d\u0d28\u0d41!\"\n }\n];\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ NAVIGATION\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction showScreen(id) {\n document.querySelectorAll('.screen').forEach(s => s.classList.remove('active'));\n document.getElementById('screen-' + id).classList.add('active');\n window.scrollTo(0, 0);\n}\n\nfunction goHome() {\n updateHomeProgress();\n showScreen('home');\n updateHUD();\n}\n\nfunction goActivity(act) {\n currentActivity = act;\n currentQ = 0;\n sessionCorrect = 0;\n sessionWrong = 0;\n sessionXP = 0;\n\n if (act === 'tf') initTF();\n else if (act === 'sorter') initSorter();\n else if (act === 'rapid') initRapid();\n else if (act === 'error') initError();\n else if (act === 'psc') initPSC();\n}\n\nfunction updateHUD() {\n document.getElementById('hud-xp').textContent = totalXP + ' XP';\n document.getElementById('hud-streak').textContent = '\ud83d\udd25 ' + streak;\n}\n\nfunction updateActivityXPBadge(id) {\n const el = document.getElementById(id);\n if (el) el.textContent = sessionXP + ' XP';\n}\n\nfunction updateHomeProgress() {\n const total = 5;\n const done = completedActivities.size;\n document.getElementById('overall-progress').style.width = (done \/ total * 100) + '%';\n document.getElementById('progress-label').textContent = done + '\/' + total + ' \u0d2a\u0d42\u0d7c\u0d24\u0d4d\u0d24\u0d3f\u0d2f\u0d3e\u0d2f\u0d3f';\n\n ['tf','sorter','rapid','error','psc'].forEach(act => {\n const card = document.getElementById('card-' + act);\n if (card) {\n if (completedActivities.has(act)) {\n card.classList.add('done');\n if (!card.querySelector('.act-done-mark')) {\n const m = document.createElement('div');\n m.className = 'act-done-mark';\n m.textContent = '\u2713 Done';\n card.appendChild(m);\n }\n }\n }\n });\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ XP & FEEDBACK HELPERS\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction awardXP(pts, isCorrect) {\n totalXP += pts;\n sessionXP += pts;\n if (isCorrect) {\n streak++;\n sessionCorrect++;\n } else {\n streak = 0;\n sessionWrong++;\n }\n updateHUD();\n showXPPopup(isCorrect ? '+' + pts + ' XP \u2b50' : '\u0d06\u0d26\u0d4d\u0d2f\u0d02 \u0d36\u0d4d\u0d30\u0d2e\u0d3f\u0d15\u0d4d\u0d15\u0d42!', isCorrect);\n}\n\nfunction showXPPopup(msg, positive) {\n const el = document.getElementById('xp-popup');\n el.textContent = msg;\n el.style.background = positive\n ? 'linear-gradient(135deg,#f4b942,#e8a020)'\n : 'linear-gradient(135deg,#ef476f,#c73060)';\n el.style.color = positive ? '#0d1b2a' : '#fff';\n el.classList.remove('hide');\n el.classList.add('show');\n setTimeout(() => {\n el.classList.remove('show');\n el.classList.add('hide');\n setTimeout(() => el.classList.remove('hide'), 300);\n }, 900);\n}\n\nfunction showToast(msg) {\n const t = document.getElementById('toast');\n t.textContent = msg;\n t.classList.add('show');\n setTimeout(() => t.classList.remove('show'), 2000);\n}\n\nfunction showResult(actKey, xpPerActivity) {\n completedActivities.add(actKey);\n document.getElementById('res-xp').textContent = sessionXP;\n document.getElementById('res-correct').textContent = sessionCorrect;\n document.getElementById('res-wrong').textContent = sessionWrong;\n\n const pct = sessionCorrect \/ (sessionCorrect + sessionWrong);\n let emoji = pct >= 0.8 ? '\ud83c\udfc6' : pct >= 0.5 ? '\ud83d\udc4d' : '\ud83d\udcda';\n let title = pct >= 0.8 ? '\u0d05\u0d38\u0d4d\u0d38\u0d7d!' : pct >= 0.5 ? '\u0d28\u0d28\u0d4d\u0d28\u0d3e\u0d2f\u0d3f!' : '\u0d35\u0d40\u0d23\u0d4d\u0d1f\u0d41\u0d02 \u0d36\u0d4d\u0d30\u0d2e\u0d3f\u0d15\u0d4d\u0d15\u0d42!';\n let sub = pct >= 0.8\n ? '\u0d28\u0d3f\u0d19\u0d4d\u0d19\u0d7e \u0d08 Activity-\u0d7d \u0d09\u0d17\u0d4d\u0d30\u0d7b \u0d2a\u0d4d\u0d30\u0d15\u0d1f\u0d28\u0d02 \u0d15\u0d3e\u0d34\u0d4d\u0d1a\u0d35\u0d1a\u0d4d\u0d1a\u0d41! \ud83c\udf89'\n : '\u0d13\u0d30\u0d4b \u0d36\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d32\u0d41\u0d02 \u0d28\u0d3f\u0d19\u0d4d\u0d19\u0d7e \u0d15\u0d42\u0d1f\u0d41\u0d24\u0d7d \u0d2e\u0d3f\u0d15\u0d1a\u0d4d\u0d1a\u0d24\u0d3e\u0d15\u0d41\u0d28\u0d4d\u0d28\u0d41.';\n\n document.getElementById('result-emoji').textContent = emoji;\n document.getElementById('result-title').textContent = title;\n document.getElementById('result-sub').textContent = sub;\n\n document.getElementById('retry-btn').onclick = () => goActivity(actKey);\n\n if (pct >= 0.8) launchConfetti();\n\n updateHomeProgress();\n showScreen('result');\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ CONFETTI\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction launchConfetti() {\n const container = document.getElementById('confetti-container');\n container.innerHTML = '';\n const colors = ['#f4b942','#06d6a0','#4cc9f0','#ef476f','#ffd166','#06d6a0'];\n for (let i = 0; i < 60; i++) {\n const p = document.createElement('div');\n p.className = 'confetti-piece';\n p.style.left = Math.random() * 100 + 'vw';\n p.style.background = colors[Math.floor(Math.random() * colors.length)];\n p.style.animationDuration = (1.5 + Math.random() * 2) + 's';\n p.style.animationDelay = (Math.random() * 0.8) + 's';\n p.style.transform = 'rotate(' + (Math.random() * 360) + 'deg)';\n p.style.width = (6 + Math.random() * 6) + 'px';\n p.style.height = (10 + Math.random() * 8) + 'px';\n container.appendChild(p);\n setTimeout(() => p.remove(), 4000);\n }\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ TRUE \/ FALSE ACTIVITY\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction initTF() {\n showScreen('tf');\n renderTF();\n}\n\nfunction renderTF() {\n const d = TF_DATA[currentQ];\n document.getElementById('tf-stmt').textContent = d.stmt;\n document.getElementById('tf-math').textContent = d.math;\n document.getElementById('tf-counter').textContent = (currentQ + 1) + '\/' + TF_DATA.length;\n\n const fb = document.getElementById('tf-feedback');\n fb.className = 'feedback-card';\n document.getElementById('tf-tip').className = 'psc-tip';\n document.getElementById('tf-next').style.display = 'none';\n\n const tb = document.getElementById('tf-true');\n const fb2 = document.getElementById('tf-false');\n tb.disabled = false;\n fb2.disabled = false;\n tb.className = 'tf-btn true-btn';\n fb2.className = 'tf-btn false-btn';\n}\n\nfunction tfAnswer(ans) {\n const d = TF_DATA[currentQ];\n const correct = ans === d.answer;\n const tb = document.getElementById('tf-true');\n const fb2 = document.getElementById('tf-false');\n\n tb.disabled = true;\n fb2.disabled = true;\n\n if (correct) {\n awardXP(10, true);\n document.getElementById('tf-feedback').className = 'feedback-card correct show';\n document.getElementById('tf-fb-title').textContent = '\u2705 \u0d36\u0d30\u0d3f! (+10 XP)';\n document.getElementById('tf-fb-text').textContent = d.math;\n if (ans) tb.classList.add('selected-correct');\n else fb2.classList.add('selected-correct');\n } else {\n awardXP(0, false);\n document.getElementById('tf-feedback').className = 'feedback-card wrong show';\n document.getElementById('tf-fb-title').textContent = '\u274c \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d!';\n const correctAns = d.answer ? '\u0d36\u0d30\u0d3f (True)' : '\u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d (False)';\n document.getElementById('tf-fb-text').textContent = '\u0d36\u0d30\u0d3f \u0d09\u0d24\u0d4d\u0d24\u0d30\u0d02: ' + correctAns + '. ' + d.math;\n if (ans) tb.classList.add('selected-wrong');\n else fb2.classList.add('selected-wrong');\n }\n\n const tipEl = document.getElementById('tf-tip');\n tipEl.innerHTML = '<strong>\ud83d\udca1 PSC Tip:<\/strong> ' + d.tip;\n tipEl.className = 'psc-tip show';\n\n document.getElementById('tf-next').style.display = 'flex';\n updateActivityXPBadge('tf-xp-badge');\n}\n\nfunction tfNext() {\n currentQ++;\n if (currentQ >= TF_DATA.length) {\n showResult('tf', 10);\n } else {\n renderTF();\n }\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ STEP SORTER ACTIVITY\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nlet sorterCurrentOrder = [];\nlet dragSrcIdx = null;\n\nfunction initSorter() {\n showScreen('sorter');\n renderSorter();\n}\n\nfunction renderSorter() {\n const d = SORTER_DATA[currentQ];\n document.getElementById('sorter-q').textContent = d.q;\n document.getElementById('sorter-counter').textContent = (currentQ + 1) + '\/' + SORTER_DATA.length;\n\n \/\/ Shuffle steps\n sorterCurrentOrder = [...d.steps.keys()].sort(() => Math.random() - 0.5);\n\n document.getElementById('sorter-feedback').className = 'feedback-card';\n document.getElementById('sorter-tip').className = 'psc-tip';\n document.getElementById('sorter-check').style.display = 'flex';\n document.getElementById('sorter-next').style.display = 'none';\n\n renderSorterSteps(d);\n}\n\nfunction renderSorterSteps(d) {\n const container = document.getElementById('sorter-steps');\n container.innerHTML = '';\n sorterCurrentOrder.forEach((origIdx, pos) => {\n const step = document.createElement('div');\n step.className = 'step-drag';\n step.draggable = true;\n step.dataset.pos = pos;\n step.innerHTML = `<span class=\"drag-handle\">\u283f<\/span><span class=\"step-num\">${pos + 1}<\/span><span>${d.steps[origIdx]}<\/span>`;\n\n step.addEventListener('dragstart', e => {\n dragSrcIdx = pos;\n step.classList.add('dragging');\n e.dataTransfer.effectAllowed = 'move';\n });\n step.addEventListener('dragend', () => step.classList.remove('dragging'));\n step.addEventListener('dragover', e => { e.preventDefault(); step.classList.add('over'); });\n step.addEventListener('dragleave', () => step.classList.remove('over'));\n step.addEventListener('drop', e => {\n e.preventDefault();\n step.classList.remove('over');\n const targetPos = parseInt(step.dataset.pos);\n if (dragSrcIdx !== null && dragSrcIdx !== targetPos) {\n [sorterCurrentOrder[dragSrcIdx], sorterCurrentOrder[targetPos]] = [sorterCurrentOrder[targetPos], sorterCurrentOrder[dragSrcIdx]];\n renderSorterSteps(SORTER_DATA[currentQ]);\n }\n });\n\n \/\/ Touch support (swap on tap)\n step.addEventListener('click', () => {\n if (dragSrcIdx === null) {\n dragSrcIdx = pos;\n step.style.border = '2px solid var(--gold)';\n } else if (dragSrcIdx === pos) {\n dragSrcIdx = null;\n step.style.border = '';\n } else {\n [sorterCurrentOrder[dragSrcIdx], sorterCurrentOrder[pos]] = [sorterCurrentOrder[pos], sorterCurrentOrder[dragSrcIdx]];\n dragSrcIdx = null;\n renderSorterSteps(SORTER_DATA[currentQ]);\n }\n });\n\n container.appendChild(step);\n });\n}\n\nfunction sorterCheck() {\n const d = SORTER_DATA[currentQ];\n const correct = JSON.stringify(sorterCurrentOrder) === JSON.stringify(d.order);\n\n if (correct) {\n awardXP(15, true);\n document.getElementById('sorter-feedback').className = 'feedback-card correct show';\n document.getElementById('sorter-fb-title').textContent = '\u2705 \u0d36\u0d30\u0d3f\u0d2f\u0d3e\u0d2f \u0d15\u0d4d\u0d30\u0d2e\u0d02! (+15 XP)';\n document.getElementById('sorter-fb-text').textContent = 'BODMAS logic \u0d09\u0d2a\u0d2f\u0d4b\u0d17\u0d3f\u0d1a\u0d4d\u0d1a\u0d4d \u0d18\u0d1f\u0d4d\u0d1f\u0d19\u0d4d\u0d19\u0d7e \u0d15\u0d4d\u0d30\u0d2e\u0d24\u0d4d\u0d24\u0d3f\u0d7d \u0d1a\u0d46\u0d2f\u0d4d\u0d24\u0d41!';\n } else {\n awardXP(0, false);\n document.getElementById('sorter-feedback').className = 'feedback-card wrong show';\n document.getElementById('sorter-fb-title').textContent = '\u274c \u0d15\u0d4d\u0d30\u0d2e\u0d02 \u0d36\u0d30\u0d3f\u0d2f\u0d32\u0d4d\u0d32';\n document.getElementById('sorter-fb-text').textContent = '\u0d36\u0d30\u0d3f\u0d2f\u0d3e\u0d2f \u0d15\u0d4d\u0d30\u0d2e\u0d02: ' + d.order.map(i => d.steps[i]).join(' \u2192 ');\n }\n\n const tipEl = document.getElementById('sorter-tip');\n tipEl.innerHTML = '<strong>\ud83d\udca1 PSC Tip:<\/strong> ' + d.tip;\n tipEl.className = 'psc-tip show';\n\n document.getElementById('sorter-check').style.display = 'none';\n document.getElementById('sorter-next').style.display = 'flex';\n updateActivityXPBadge('sorter-xp-badge');\n}\n\nfunction sorterNext() {\n currentQ++;\n if (currentQ >= SORTER_DATA.length) {\n showResult('sorter', 15);\n } else {\n dragSrcIdx = null;\n renderSorter();\n }\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ RAPID FIRE ACTIVITY\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nlet rfTimer = null;\nlet rfTimeLeft = 10;\nlet rfAnswered = false;\n\nfunction initRapid() {\n showScreen('rapid');\n rfAnswered = false;\n renderRapid();\n}\n\nfunction renderRapid() {\n const d = RAPID_DATA[currentQ];\n document.getElementById('rf-counter').textContent = (currentQ + 1) + '\/' + RAPID_DATA.length;\n document.getElementById('rf-question').textContent = d.q;\n\n const optsEl = document.getElementById('rf-options');\n optsEl.innerHTML = '';\n d.opts.forEach((opt, i) => {\n const btn = document.createElement('div');\n btn.className = 'rf-opt';\n btn.textContent = opt;\n btn.onclick = () => rfAnswer(i);\n optsEl.appendChild(btn);\n });\n\n document.getElementById('rf-feedback').className = 'feedback-card';\n rfAnswered = false;\n startRFTimer();\n}\n\nfunction startRFTimer() {\n clearInterval(rfTimer);\n rfTimeLeft = 10;\n updateRFTimer();\n rfTimer = setInterval(() => {\n rfTimeLeft--;\n updateRFTimer();\n if (rfTimeLeft <= 0) {\n clearInterval(rfTimer);\n if (!rfAnswered) {\n rfAnswer(-1);\n }\n }\n }, 1000);\n}\n\nfunction updateRFTimer() {\n document.getElementById('rf-timer-num').textContent = rfTimeLeft;\n const arc = document.getElementById('rf-timer-arc');\n const circumference = 251.2;\n const offset = circumference * (1 - rfTimeLeft \/ 10);\n arc.style.strokeDashoffset = offset;\n arc.style.stroke = rfTimeLeft <= 3 ? '#ef476f' : rfTimeLeft <= 6 ? '#f4b942' : '#06d6a0';\n}\n\nfunction rfAnswer(idx) {\n if (rfAnswered) return;\n rfAnswered = true;\n clearInterval(rfTimer);\n\n const d = RAPID_DATA[currentQ];\n const correct = idx === d.ans;\n const opts = document.querySelectorAll('.rf-opt');\n\n opts.forEach((o, i) => {\n o.style.pointerEvents = 'none';\n if (i === d.ans) o.classList.add('rf-correct');\n else if (i === idx && !correct) o.classList.add('rf-wrong');\n });\n\n if (correct) {\n awardXP(10, true);\n document.getElementById('rf-feedback').className = 'feedback-card correct show';\n document.getElementById('rf-fb-title').textContent = '\u26a1 Fast & Correct! (+10 XP)';\n } else {\n awardXP(0, false);\n document.getElementById('rf-feedback').className = 'feedback-card wrong show';\n document.getElementById('rf-fb-title').textContent = idx === -1 ? '\u23f1\ufe0f Time Out!' : '\u274c \u0d24\u0d46\u0d31\u0d4d\u0d31\u0d4d!';\n }\n document.getElementById('rf-fb-text').textContent = d.exp;\n updateActivityXPBadge('rf-xp-badge');\n\n setTimeout(() => {\n currentQ++;\n if (currentQ >= RAPID_DATA.length) {\n showResult('rapid', 10);\n } else {\n renderRapid();\n }\n }, 1800);\n}\n\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n\/\/ ERROR SPOTTER ACTIVITY\n\/\/ \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\nfunction initError() {\n showScreen('error');\n renderError();\n}\n\nfunction renderError() {\n const d = ERROR_DATA[currentQ];\n document.getElementById('err-q').textContent = d.q;\n document.getElementById('err-counter').textContent = (currentQ + 1) + '\/' + ERROR_DATA.length;\n\n const container = document.getElementById('err-steps');\n container.innerHTML = '';\n d.steps.forEach((step, i) => {\n const el = document.createElement('div');\n el.className = 'err-step';\n el.innerHTML = `<span class=\"err-step-num\">Step ${i + 1}<\/span><span class=\"err-step-content\">${step.text}<\/span>`;\n el.onclick = () => errTap(i, el);\n container.appendChild(el);\n });\n\n document.getElementById('err-feedback').className = 'feedback-card';\n document.getElementById('err-tip').className = 'psc-tip';\n document.getElementById('err-next').style.display = 'none';\n}\n\nfunction errTap(idx, el) {\n const d = ERROR_DATA[currentQ];\n const allSteps = document.querySelectorAll('.err-step');\n allSteps.forEach(s => s.style.pointerEvents = 'none');\n\n if (idx === d.wrongIdx) {\n el.classList.add('correct-pick');\n awardXP(15, true);\n document.getElementById('err-feedback').className = 'feedback-card correct show';\n document.getElementById('err-fb-title').textContent = '\ud83d\udd0d \u0d36\u0d30\u0d3f \u0d15\u0d23\u0d4d\u0d1f\u0d46\u0d24\u0d4d\u0d24\u0d3f! 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