.paper_app__ZNoRx{--accent:#2563eb;--bg:#f5f6f8;--surface:#fff;--text:#17202e;--muted:#697586;--border:#e4e7ec;position:fixed;inset:0;z-index:60;display:flex;flex-direction:column;background:var(--bg);color:var(--text);font-family:inherit;overscroll-behavior:none}.paper_app__ZNoRx a,.paper_app__ZNoRx button{-webkit-tap-highlight-color:transparent}.paper_app__ZNoRx button{cursor:pointer}.paper_app__ZNoRx button:disabled{opacity:.35;cursor:default}.paper_app__ZNoRx a:focus-visible,.paper_app__ZNoRx button:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.paper_header__FOxJT{display:flex;align-items:center;gap:12px;padding:calc(12px + env(safe-area-inset-top)) 16px 12px;background:var(--surface);border-bottom:1px solid var(--border)}.paper_header__FOxJT>div{flex:1}.paper_eyebrow__4CZuo{font-size:10px;font-weight:700;letter-spacing:.08em;color:var(--muted)}.paper_header__FOxJT h1{font-size:17px;font-weight:700;margin:3px 0 0}.paper_header__FOxJT h1 span{font-size:12px;color:var(--muted);margin-left:4px}.paper_icon__KDzkg{display:inline-flex;align-items:center;justify-content:center;min-width:44px;background:transparent;color:inherit;text-decoration:none}.paper_icon__KDzkg,.paper_submit__YH626{min-height:44px;border:0;border-radius:12px}.paper_submit__YH626{background:var(--accent);color:#fff;font-size:14px;font-weight:700;padding:0 16px}.paper_progress__o3MHH{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 18px;font-size:11px;color:var(--muted);border-bottom:1px solid var(--border);background:var(--surface)}.paper_progress__o3MHH b{color:var(--text);margin-left:7px;font-variant-numeric:tabular-nums}.paper_tools__gEnrK{gap:2px;padding:7px 8px;background:var(--surface);border-bottom:1px solid var(--border)}.paper_tools__gEnrK,.paper_tools__gEnrK button{display:flex;justify-content:center;align-items:center}.paper_tools__gEnrK button{gap:5px;min-width:38px;min-height:44px;padding:0 9px;border:0;border-radius:10px;background:transparent;color:var(--muted);font-size:12px;font-weight:600}.paper_tools__gEnrK button.paper_active__YV1jH{background:#eaf1ff;color:var(--accent)}.paper_divider__OcQMF{width:1px;height:24px;background:var(--border);margin:0 4px}.paper_viewport__tihVL{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;background:#e5e7eb}.paper_paper__Za6YI{position:relative;background:#fff;flex:none;box-shadow:0 2px 12px #0001}.paper_paper__Za6YI canvas{display:block}.paper_ink__9fQM8{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.paper_questionBadge__zMbaP{position:absolute;border:0;background:transparent;color:#2563eb;width:44px;height:44px;font-size:12px;font-weight:700;transform:translateY(-5px)}.paper_questionBadge__zMbaP span{display:flex;align-items:center;justify-content:center;width:26px;height:26px;margin:auto;border:1px solid #2563eb60;background:#eff6ff;border-radius:8px}.paper_answerStamp__2acea,.paper_currentBadge__LgoF6 span{background:#2563eb;color:#fff}.paper_answerStamp__2acea{position:absolute;pointer-events:none;border-radius:8px;padding:4px 10px;font-weight:700}.paper_footer__PultA{background:#fff;border-top:1px solid var(--border);padding:4px 16px calc(10px + env(safe-area-inset-bottom));box-shadow:0 -3px 16px #00000004}.paper_questionNav__upbdd{display:flex;align-items:center;gap:4px}.paper_questionTitle__AdX_A{display:flex;align-items:center;gap:8px;flex:1;border:0;background:transparent;color:var(--text);min-height:44px;text-align:left;font-size:14px}.paper_questionTitle__AdX_A>span{color:var(--muted);font-size:12px}.paper_questionTitle__AdX_A .paper_small__dkH2D{margin-left:auto;font-size:11px}.paper_flagged__f5h_q{color:var(--accent);background:#eaf1ff}.paper_answers__Khygh{display:flex;gap:9px}.paper_answers__Khygh button{position:relative;display:flex;align-items:center;justify-content:center;gap:4px;flex:1;min-height:48px;border:1px solid var(--border);border-radius:12px;background:var(--surface);color:var(--text);font-size:18px;font-weight:600;font-variant-numeric:tabular-nums}.paper_answers__Khygh button.paper_chosen__CCvTb{background:var(--accent);border-color:var(--accent);color:#fff}.paper_answers__Khygh button.paper_correct__OXyZW{border:2px solid #16a34a;background:#f0fdf4;color:#166534}.paper_answers__Khygh button:disabled{opacity:1}.paper_bottomline__otAuT{display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--muted);font-size:11px;padding-top:6px}.paper_bottomline__otAuT button{display:flex;align-items:center;justify-content:center;gap:5px;min-height:40px;border:0;background:transparent;color:var(--accent);font-size:12px;font-weight:600}.paper_status__Fkx2k{position:absolute;top:46%;left:50%;transform:translate(-50%,-50%);max-width:80%;padding:16px;background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:0 4px 24px #0002;font-size:13px}.paper_status__Fkx2k button{display:block;color:var(--accent);padding:10px;border:0;background:transparent}.paper_backdrop__51pWK{position:fixed;inset:0;background:rgba(3,7,18,.25);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:80;display:flex;align-items:flex-end;justify-content:center}.paper_sheet__TeXSF{width:100%;max-width:460px;max-height:82dvh;overflow:auto;background:#fff;color:#111827;font-family:inherit;border-radius:32px 32px 0 0;padding:12px 24px calc(24px + env(safe-area-inset-bottom));box-shadow:0 32px 64px -16px rgba(15,23,42,.22);animation:paper_appear__b_4cu .2s ease-out;--border:#e5e7eb;--muted:#6b7280;--bg:#f9fafb;--text:#111827;--accent:#111827}.paper_handle__VYsKI{width:36px;height:4px;border-radius:4px;background:var(--border);margin:0 auto 12px}.paper_sheetHeader__u92ds{display:flex;align-items:center;justify-content:space-between}.paper_sheet__TeXSF h2{margin:0}.paper_sheet__TeXSF h3{margin:16px 0 12px}.paper_muted__Eapvq{color:var(--muted);margin:12px 0 20px}.paper_grid__GlbqW{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.paper_grid__GlbqW button{border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);min-height:52px;display:flex;align-items:center;justify-content:center;gap:6px;font-size:15px;font-weight:600}.paper_grid__GlbqW small{font-size:11px;color:var(--muted)}.paper_grid__GlbqW .paper_answeredCell__J9dkP{background:#eaf1ff;color:var(--accent)}.paper_grid__GlbqW .paper_currentCell__EPKr2{border:2px solid var(--accent)}.paper_source__ttF79{font-size:11px;color:var(--muted);line-height:1.8;margin-top:20px}.paper_source__ttF79 a{text-decoration:underline}.paper_sample__q2RYi{display:inline-block;padding:6px 10px;background:var(--bg);color:var(--muted);border-radius:8px;font-size:11px;margin-top:12px}.paper_clue___M0ex{padding:14px;background:#eaf1ff;color:#1d4ed8;border-radius:12px;font-size:14px;line-height:1.6}.paper_body__f1lW_{margin:16px 0}.paper_primary__UxjSP,.paper_secondary__A7ywo{width:100%;min-height:48px;border-radius:12px;display:flex;justify-content:center;align-items:center;gap:8px;margin-top:12px}.paper_primary__UxjSP{background:var(--accent);color:#fff;border:0}.paper_secondary__A7ywo{background:var(--bg);color:var(--text);border:1px solid var(--border)}.paper_score__tesAQ{font-size:64px;font-weight:700;letter-spacing:-.04em;font-variant-numeric:tabular-nums;margin-top:20px}.paper_score__tesAQ span{font-size:20px;color:var(--muted);letter-spacing:0;margin-left:8px}@keyframes paper_appear__b_4cu{0%{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}@media(min-width:768px){.paper_tools__gEnrK{gap:8px}.paper_footer__PultA{padding-left:24%;padding-right:24%}.paper_sheet__TeXSF{margin:24px 16px;border-radius:32px}.paper_viewport__tihVL{padding:0}.paper_header__FOxJT{padding-left:24px;padding-right:24px}}@media(max-width:360px){.paper_tools__gEnrK button{min-width:32px;padding:0 6px}.paper_tools__gEnrK{gap:0}.paper_tools__gEnrK button span{font-size:11px}.paper_progress__o3MHH{font-size:10px;padding:8px 12px}.paper_footer__PultA{padding-left:12px;padding-right:12px}.paper_questionTitle__AdX_A .paper_small__dkH2D{display:none}}@media(prefers-reduced-motion:reduce){.paper_sheet__TeXSF{animation:none}}.paper_tools__gEnrK button{white-space:nowrap;flex-shrink:0}.paper_tools__gEnrK svg{flex-shrink:0}@media(max-width:460px){.paper_tools__gEnrK button span{display:none}.paper_tools__gEnrK button{min-width:40px;padding:0 8px}.paper_tools__gEnrK{gap:3px}}@media(max-width:360px){.paper_tools__gEnrK button{min-width:34px;padding:0 5px}.paper_tools__gEnrK{gap:1px}}.paper_columnViewport__LqH5s{position:relative;overflow-x:hidden;background:var(--bg)}.paper_column__n9Kpu{max-width:540px;padding:16px;margin:auto}.paper_intro__D34wW{display:flex;flex-direction:column;gap:6px;margin:4px 0 20px}.paper_intro__D34wW b{font-size:16px}.paper_intro__D34wW span{font-size:12px;color:var(--muted);line-height:1.6}.paper_cropCard__cMpay{background:var(--surface);border:1px solid var(--border);border-radius:16px;margin-bottom:20px;overflow:hidden;scroll-margin-top:12px}.paper_selectedCard__ETFVE{border-color:#2563eb80}.paper_cropHeader__Jy_QO{display:flex;justify-content:space-between;align-items:center;padding:4px 12px;border-bottom:1px solid var(--border);font-size:11px;color:var(--muted)}.paper_cropHeader__Jy_QO button{display:flex;align-items:center;gap:8px;min-height:44px;border:0;background:transparent;color:var(--text);font-size:14px}.paper_cropHeader__Jy_QO button span{font-size:12px;color:var(--muted)}.paper_cropScroll__k83JH{overflow-x:auto;background:#fff}.paper_cropImage__vDpDn{position:relative;background:#fff}.paper_cropImage__vDpDn img{display:block;width:100%;height:auto;user-select:none}.paper_cropAction__4PVwL{display:flex;align-items:center;justify-content:center;gap:6px;min-height:44px;width:100%;border:0;border-top:1px solid var(--border);color:var(--accent);background:var(--surface);font-size:12px}.paper_columnViewport__LqH5s .paper_source__ttF79{padding:0 4px 12px}.paper_promptImage__qVMBF{display:block;width:100%;background:#fff}.paper_originalChoices__CIAWO{padding:0 0 8px;background:#fff}.paper_originalChoice__nOy6e{display:flex;align-items:center;position:relative;width:100%;min-height:48px;border:0;background:#fff;padding:0;touch-action:pan-y;color:#111}.paper_originalChoice__nOy6e img{width:100%;height:auto;display:block}.paper_originalChoice__nOy6e:disabled{opacity:1!important}.paper_rowCircle__BJMer{position:absolute;left:6.6%;top:50%;transform:translate(-50%,-50%)}.paper_blackCircle__SKFI2,.paper_emptyCircle__kU_mL{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;font-size:14px;font-weight:600;font-family:Arial,sans-serif}.paper_blackCircle__SKFI2{background:#111;color:#fff;border:1px solid #111}.paper_emptyCircle__kU_mL{background:#fff;color:#111;border:1px solid #111}.paper_pictureChoice__5KNdV{position:absolute;transform:translate(-50%,-50%);width:44px;height:44px;border:0;background:transparent;display:flex;align-items:center;justify-content:center;padding:0;touch-action:pan-y}.paper_pictureChoice__5KNdV:disabled{opacity:1!important}.paper_pictureChoice__5KNdV .paper_blackCircle__SKFI2,.paper_pictureChoice__5KNdV .paper_emptyCircle__kU_mL{width:24px;height:24px}.paper_footer__PultA .paper_bottomline__otAuT{padding:0 0 8px}.paper_originalChoice__nOy6e:active{background:#f8f8f8}.paper_simpleFooter__2YoA6{display:flex;align-items:center;justify-content:center;position:relative;width:100%;padding:8px 16px calc(8px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid #e5e7eb}.paper_bottomAnswers__62893{display:flex;justify-content:center;align-items:center;gap:8px}.paper_bottomAnswers__62893.paper_fourAnswers__RpODb{gap:10px}.paper_bottomAnswers__62893 button{display:flex;align-items:center;justify-content:center;width:42px;height:42px;flex:none;border:0;background:transparent;padding:0}.paper_bottomAnswers__62893 button:disabled{opacity:1}.paper_bottomCircle__l9lq6{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;background:#f3f4f6;color:#374151;border:0;font-size:14px;font-weight:600;line-height:20px;transition:background .15s,transform .15s,border-bottom-width .15s;transform:scale(1)}.paper_bottomAnswers__62893 button:active .paper_bottomCircle__l9lq6{transform:translateY(2px);box-shadow:inset 0 2px 4px rgba(0,0,0,.05)}.paper_selectedBottomCircle___r15D{background:#111827;color:#fff;border-color:transparent;border-bottom:4px solid #000;box-shadow:0 4px 6px rgba(0,0,0,.05);transform:scale(1)}.paper_bottomAnswers__62893 button:active .paper_selectedBottomCircle___r15D{transform:translateY(2px) scale(1);border-bottom-width:2px}.paper_simpleFooter__2YoA6>.paper_icon__KDzkg{min-width:36px}@media(min-width:640px){.paper_simpleFooter__2YoA6{padding:12px 24px calc(12px + env(safe-area-inset-bottom))}.paper_bottomAnswers__62893{gap:14px}.paper_bottomAnswers__62893.paper_fourAnswers__RpODb{gap:16px}.paper_bottomAnswers__62893 button{width:48px;height:48px}.paper_bottomCircle__l9lq6{width:48px;height:48px;border-radius:14px;font-size:16px}}@media(min-width:1024px){.paper_bottomAnswers__62893{gap:18px}.paper_bottomAnswers__62893.paper_fourAnswers__RpODb{gap:22px}.paper_bottomAnswers__62893 button{width:52px;height:52px}.paper_bottomCircle__l9lq6{width:52px;height:52px;border-radius:16px;font-size:17px}}.paper_quizViewport__joT3s{background:#fff;color:#111827}.paper_quizColumn__LhJW6{max-width:672px;padding:16px 0 24px;margin:0 auto}.paper_quizProblem__YruMw{background:#fff;border:0;border-radius:0;margin-bottom:24px;overflow:visible}.paper_quizProblem__YruMw .paper_cropAction__4PVwL{border-top:0;background:#fff;color:#2563eb;margin-top:16px}.paper_quizColumn__LhJW6 .paper_source__ttF79{margin-top:24px}.paper_app__ZNoRx{touch-action:pan-x pan-y}.paper_imageZoomArea__NXmji{overflow-x:auto;touch-action:pan-x pan-y;overscroll-behavior-x:contain;background:#fff}.paper_imageZoomArea__NXmji img{display:block;height:auto;user-select:none;-webkit-user-select:none;touch-action:pan-x pan-y}.paper_reportRows__DULoS{border-top:1px solid var(--border)}.paper_reportRows__DULoS>div{display:grid;grid-template-columns:48px 1fr;gap:6px;padding:14px 0;border-bottom:1px solid var(--border);font-size:14px}.paper_reportRows__DULoS small{grid-column:2;color:var(--muted);font-size:12px}.paper_reflectionChoices__wu2v3{display:flex;flex-direction:column;gap:8px;margin:16px 0}.paper_reflectionChoices__wu2v3 button{text-align:left;min-height:48px;border:1px solid var(--border);border-radius:12px;background:var(--surface);color:var(--text);padding:12px 16px;font-size:14px}.paper_reflectionChoices__wu2v3 .paper_reflectionSelected__0ZpB4{border-color:#2563eb;background:#eff6ff;color:#1d4ed8}.paper_learningDetails__cv61J{margin:16px 0;padding:12px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.paper_learningDetails__cv61J summary{cursor:pointer;font-size:14px;font-weight:600;min-height:32px}.paper_sheetHeader__u92ds>button:only-child{margin-left:auto}.paper_sheet__TeXSF .paper_body__f1lW_{color:#4b5563}.paper_sheet__TeXSF .paper_primary__UxjSP,.paper_sheet__TeXSF .paper_secondary__A7ywo{min-height:64px;border-radius:16px;transition:background .15s,transform .15s;font-size:18px;font-weight:900}.paper_sheet__TeXSF .paper_primary__UxjSP{background:#111827;color:#fff;border:0;border-bottom:4px solid #000;box-shadow:0 4px 6px rgba(0,0,0,.05)}.paper_sheet__TeXSF .paper_primary__UxjSP:hover{background:#000}.paper_sheet__TeXSF .paper_primary__UxjSP:active{transform:translateY(2px);border-bottom-width:2px}.paper_sheet__TeXSF .paper_secondary__A7ywo{background:#f9fafb;color:#111827;border:1px solid #e5e7eb}.paper_sheet__TeXSF .paper_clue___M0ex{background:#f9fafb;color:#374151;border-radius:16px;line-height:1.75}.paper_sheet__TeXSF .paper_icon__KDzkg{color:#9ca3af;border-radius:50%}.paper_sheet__TeXSF .paper_icon__KDzkg:hover{background:#f3f4f6;color:#111827}.paper_sheet__TeXSF .paper_handle__VYsKI{background:#e5e7eb}.paper_sheet__TeXSF .paper_learningDetails__cv61J{border-color:#e5e7eb}@media(prefers-reduced-motion:reduce){.paper_sheet__TeXSF .paper_primary__UxjSP,.paper_sheet__TeXSF .paper_secondary__A7ywo{transition:none}}.paper_characterFeedback__mYXqr{display:flex;align-items:center;gap:16px;margin:4px 0 16px}.paper_characterFeedback__mYXqr img{width:96px;height:96px;object-fit:contain;flex-shrink:0}.paper_sheet__TeXSF .paper_characterFeedback__mYXqr h3{margin:0}@media(max-width:360px){.paper_characterFeedback__mYXqr{gap:12px}.paper_characterFeedback__mYXqr img{width:80px;height:80px}}.paper_sheet__TeXSF{display:flex;flex-direction:column;overflow:hidden}.paper_sheetHeader__u92ds,.paper_sheet__TeXSF .paper_handle__VYsKI,.paper_sheet__TeXSF>.paper_primary__UxjSP{flex-shrink:0}.paper_sheetContent__yp0Ee{min-height:0;overflow-y:auto;overscroll-behavior:contain}.paper_sheetHeader__u92ds{padding-bottom:12px;background:#fff}.paper_answerSheet___n7yD{padding-top:24px}.paper_answerSheet___n7yD .paper_characterFeedback__mYXqr{margin-top:0}.paper_app__ZNoRx .paper_confirmButton__3bPEs{min-height:44px;flex-shrink:0;padding:0 16px;border:0;border-radius:12px;background:#f3f4f6;color:#374151;font-size:14px;font-weight:500;line-height:20px;cursor:pointer}.paper_app__ZNoRx .paper_confirmButton__3bPEs:hover{background:#e5e7eb;color:#111827}.paper_app__ZNoRx .paper_nextButton__CLOny{font-size:14px;font-weight:500;line-height:20px}.paper_retryFeedback__8ZBPl img{width:72px;height:72px}.paper_retryFeedback__8ZBPl{gap:12px}@media(max-width:360px){.paper_retryFeedback__8ZBPl img{width:64px;height:64px}}.paper_answerActions__E1GXT{display:flex;gap:12px;margin-top:12px;flex-shrink:0}.paper_sheet__TeXSF .paper_quizAction__0jnwY{min-height:56px;flex-shrink:0;border:0;font-size:16px;line-height:24px;font-weight:500}.paper_sheet__TeXSF .paper_quizSecondary__3Foc8{font-weight:700}body.ios-capacitor-app .paper_footer__PultA,body.ios-capacitor-app .paper_simpleFooter__2YoA6,html.ios-capacitor-app .paper_footer__PultA,html.ios-capacitor-app .paper_simpleFooter__2YoA6{padding-bottom:8px!important}body.ios-capacitor-app .paper_sheet__TeXSF,html.ios-capacitor-app .paper_sheet__TeXSF{padding-bottom:20px!important}