@layer games{@scope(.arithmetic-page){.answer-panel,.result-panel,.progress-card,.score-box{border:1px solid var(--line);border-radius:var(--radius-m);background:#fff;box-shadow:0 12px 30px #2b5f9414}.answer-panel,.result-panel{flex-direction:column;gap:12px;padding:36px;display:flex}}}
@layer games{@scope(.arithmetic-page){.progress-card{padding:14px 10px 12px}.progress-label{border-radius:var(--radius-full);background:var(--blue);color:#fff;width:fit-content;margin:-2px auto 6px;padding:4px 18px;font-size:.82rem;font-weight:700;display:block}.progress-track{scrollbar-width:none;align-items:center;gap:10px;padding:11px 8px 8px;display:flex;overflow:auto visible}.progress-track::-webkit-scrollbar{display:none}.progress-dot{border-radius:var(--border-circle);color:#537094;background:#f8fbff;border:1px solid #c9d8ec;flex:none;align-content:center;place-items:center;gap:2px;width:30px;height:30px;padding-top:2px;font-size:.8rem;font-weight:700;line-height:1;display:grid;position:relative}.progress-dot:after{content:"";border-top:2px dotted #b7cbe4;width:10px;position:absolute;top:44%;left:100%;transform:translateY(-50%)}.progress-dot:last-child:after{display:none}.progress-dot.done{border-color:var(--blue);background:var(--blue);color:#fff}.progress-dot.current{border-color:var(--blue);color:var(--blue);background:#fff;transform:scale(1.08);box-shadow:0 0 0 4px #1475df29}.progress-dot.current:before{content:"";border-radius:var(--border-circle);border:2px solid #1475df38;position:absolute;inset:-7px}.score-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}.score-box{text-align:center;padding:12px 14px;position:relative;overflow:hidden}.score-box span{color:#4f6590;font-size:.905rem;font-weight:700;display:block}.score-box .score-label{justify-content:center;align-items:center;gap:6px;line-height:1;display:inline-flex;position:relative}.score-label svg{width:1.16em;height:1.16em;color:var(--blue);transform:translateY(.04em)}.score-box.mistake .score-label svg{color:var(--red)}.score-box strong{color:#0e2461;font-family:var(--font-body), monospace;font-variant-numeric:tabular-nums;margin-top:0;font-size:calc(1.45rem + 2px);display:block}.time-score{overflow:visible}.penalty-pop{z-index:3;color:var(--red);pointer-events:none;text-shadow:0 2px #fff;font-size:.95rem;font-style:normal;font-weight:700;animation:.92s ease-out both penalty-float;position:absolute;top:42px;left:50%}.score-box.mistake strong{color:var(--red)}}}
@layer games{@scope(.arithmetic-page){.answer-panel label{color:#334872;text-align:center;font-size:.9rem;font-weight:700}.answer-panel input{border-radius:var(--radius-m);color:#152654;text-align:center;border:2px solid #4c9dff;outline:none;width:100%;height:58px;font-size:2rem;font-weight:700}.answer-panel input:focus{box-shadow:0 0 0 4px #4c9dff29}.answer-panel small{color:#6f7f9c;text-align:center;font-size:.78rem}.number-keypad{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.operator-keypad{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.keypad-button{border-radius:var(--radius-m);color:#123674;min-height:48px;font:inherit;touch-action:manipulation;background:linear-gradient(#fff,#eef7ff);border:1px solid #cfe0f4;place-items:center;padding-top:3px;font-size:1.45rem;font-weight:700;line-height:1;display:grid;box-shadow:0 4px 12px #0068d238}.keypad-button:active:not(:disabled){transform:translateY(1px);box-shadow:0 2px 8px #0068d226}.keypad-button:disabled{cursor:not-allowed;opacity:.45}.keypad-utility{color:#4f6590;background:#f7fbff;font-size:1.15rem}.operator-key{min-height:74px;font-size:2rem}.operator-problem-card strong{justify-content:center;align-items:center;gap:.18em;display:inline-flex}.blank-operator{border-radius:var(--radius-m);color:#0000;-webkit-user-select:none;user-select:none;background:#fff;place-items:center;width:1.3em;height:1.3em;font-size:.72em;line-height:1;display:inline-grid;box-shadow:inset 0 0 0 2px #9fcaff}.keypad-answer-panel .secondary-button,.keypad-answer-panel .problem-reset-button{margin-top:54px}.answer-panel input[aria-disabled=true]{cursor:not-allowed;opacity:.62}}}
@layer games{@scope(.arithmetic-page){.result-panel{text-align:center;align-items:center}.result-panel h2{margin:0;font-size:1.8rem}}}
@layer games{@scope(.arithmetic-page){.problem-stream-panel{min-height:640px;position:relative}.problem-reset-button{margin-top:0}.problem-stream{position:absolute;inset:42px 8% 0}.problem-card{--offset:0;border-radius:var(--radius-m);opacity:.24;width:min(480px,100%);min-height:96px;transform:translate(-50%, calc(-50% + var(--stack-shift,0px))) scale(var(--depth-scale,.94));background:#ffffffeb;border:1px solid #bcd3f1db;align-content:center;place-items:center;gap:2px;transition:transform .28s,opacity .28s,border-color .28s,background .28s,box-shadow .28s;display:grid;position:absolute;top:50%;left:50%;box-shadow:0 18px 38px #2b5f941a}.problem-card.current{z-index:20;border:1px solid var(--line);opacity:1;min-height:128px;transform:translate(-50%, -50%) scale(var(--depth-scale,1.06));background:linear-gradient(#f7fbff,#eaf5ff);box-shadow:0 24px 58px #2479e22e}.problem-card.future-depth-1{--stack-shift:104px}.problem-card.future-depth-2{--stack-shift:170px}.problem-card.future-depth-3{--stack-shift:222px}.problem-card.future-depth-4{--stack-shift:254px}.problem-card.past-depth-1{--stack-shift:-104px}.problem-card.past-depth-2{--stack-shift:-170px}.problem-card.past-depth-3{--stack-shift:-222px}.problem-card.past-depth-4{--stack-shift:-254px}.problem-card.past{z-index:8;opacity:.34}.problem-card.future{z-index:12;opacity:.54}.problem-card.next{z-index:16;opacity:.82;box-shadow:0 18px 42px #2b5f941f}.problem-card.future-depth-2{z-index:10;opacity:.46}.problem-card.future-depth-3{z-index:6;opacity:.24}.problem-card.future-depth-4{z-index:4;opacity:0}.problem-card.past-depth-1{z-index:14;opacity:.66}.problem-card.past-depth-2{z-index:10;opacity:.46}.problem-card.past-depth-3{z-index:6;opacity:.28}.problem-card.past-depth-4{z-index:4;opacity:0}.problem-card.far{filter:blur(.3px)}.problem-card span{color:#8a9ab8;font-size:.78rem;font-weight:700}.problem-card strong{color:#1d4185;letter-spacing:0;font-size:clamp(1.55rem,4vw,2.25rem)}.problem-mistake-message{z-index:4;border-radius:var(--radius-full);width:max-content;max-width:calc(100% - 32px);color:var(--red);text-align:center;pointer-events:none;background:#fff0f2f5;border:1px solid #ef405633;margin:0;padding:7px 14px;font-size:.86rem;font-weight:700;position:absolute;top:15px;left:50%;transform:translate(-50%);box-shadow:0 8px 20px #ef40561f}.problem-card.current strong{font-size:clamp(2.1rem,5vw,3rem)}.correct-mark{color:#26b861}.wrong-mark{color:var(--red)}.answer-panel.has-mistake{border-color:#ef405694;animation:.36s both mistake-shake}.answer-panel.has-mistake input{border-color:var(--red);background:#fff7f8}.mistake-message{border-radius:var(--radius-m);color:var(--red);text-align:center;background:#fff0f2;margin:-2px 0 0;padding:9px 10px;font-size:.9rem;font-weight:700}.problem-card.miss-flash{background:linear-gradient(#fff9fa,#fff0f3);border-color:#ef4056d1;animation:.52s both mistake-flash}.answer-panel input:disabled{cursor:not-allowed;opacity:.62}.time-limit-note{border-radius:var(--radius-m);color:#1b5db0;text-align:center;background:#f7fbff;border:1px solid #d8e8fb;padding:10px 12px;font-size:.9rem;font-weight:700}.timeout-message{border-radius:var(--radius-m);color:#9a6100;background:#fff4d8;margin:0;padding:12px;font-weight:700}.problem-stream-panel.is-concealed .problem-stream{opacity:0;visibility:hidden}.problem-conceal-panel{border-radius:var(--radius-m) var(--radius-m) 0 0;color:#2b6fc5;text-align:center;background:linear-gradient(#ffffffeb,#eff8fff5),repeating-linear-gradient(135deg,#1475df14 0 12px,#0000 12px 24px);border:1px dashed #58a2ff57;place-items:center;font-size:clamp(1.1rem,2.4vw,1.5rem);font-weight:700;display:grid;position:absolute;inset:42px 8% 0}}}
@layer games{@scope(.arithmetic-page){}}
@layer games{@scope(.arithmetic-page){@media (max-width:820px){.game-play-shell.is-active .game-title-block .section-kicker{margin-bottom:8px}.problem-stream-panel{min-height:500px}.game-play-shell.is-active{border-inline:0;border-radius:0;flex-direction:column;min-height:auto;display:flex;overflow:visible}.game-play-shell.is-active .game-control-panel{display:contents}.game-play-shell.is-active .game-title-block{background:#fffffff0;order:1;padding:22px 16px 12px}.game-play-shell.is-active .game-title-block h1{font-size:clamp(2.25rem,13vw,3.35rem)}.game-play-shell.is-active .game-title-block p{margin-top:8px}.game-play-shell.is-active .progress-card{order:2;margin:0 16px 12px;box-shadow:0 8px 24px #2b5f9414}.game-play-shell.is-active .score-row{order:3;margin:0 16px 12px}.game-play-shell.is-active .time-limit-note{order:4;margin:0 16px 10px}.game-play-shell.is-active .problem-stream-panel{order:5;min-height:clamp(230px,36svh,320px)}.game-play-shell.is-active .problem-stream{inset:36px 4% 0}.game-play-shell.is-active .answer-panel,.game-play-shell.is-active .result-panel{z-index:8;border-inline:0;border-radius:var(--radius-m) var(--radius-m) 0 0;border-bottom:0;order:6;margin:0;position:sticky;bottom:0;box-shadow:0 -10px 32px #2b5f9424}.game-play-shell.is-active .answer-panel{padding:16px 20px calc(16px + env(safe-area-inset-bottom))}}@media (max-width:520px){.result-count-tabs,.question-count-options{grid-template-columns:repeat(3,minmax(0,1fr));width:100%}.result-count-tabs{display:grid}.result-count-tabs button,.question-count-options button{min-width:0}.result-count-tabs button:lang(en),.question-count-options button:lang(en){white-space:normal;padding-inline:4px;font-size:.78rem;line-height:1.2}.score-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.score-box{min-width:0;padding-inline:10px}.problem-stream-panel{min-height:min(320px,38svh)}.problem-card{width:min(100%,360px);min-height:74px;transform:translate(-50%, calc(-50% + var(--stack-shift,0px))) scale(var(--depth-scale,.88));top:50%}.problem-card.current{min-height:92px}.problem-card.current strong{font-size:clamp(1.8rem,11vw,2.55rem)}.progress-card{order:2;margin:0 16px 12px;box-shadow:0 8px 24px #2b5f9414}.score-row{order:3;margin:0 16px 12px}.time-limit-note{order:4;margin:0 16px 10px}.problem-stream-panel{order:5;min-height:clamp(230px,36svh,320px)}.problem-stream{inset:36px 4% 0}.answer-panel,.result-panel{z-index:8;border-inline:0;border-radius:var(--radius-m) var(--radius-m) 0 0;border-bottom:0;order:6;margin:0;position:sticky;bottom:0;box-shadow:0 -10px 32px #2b5f9424}.answer-panel{padding:16px 20px calc(16px + env(safe-area-inset-bottom))}.answer-panel input{height:54px}.keypad-answer-panel{gap:10px}.number-keypad{gap:7px}.keypad-button{border-radius:var(--radius-m);min-height:44px;font-size:1.5rem}.keypad-button.operator-key{min-height:60px;font-size:2.4rem}.answer-panel .primary-button,.answer-panel .secondary-button{min-height:42px}.answer-panel:focus-within{gap:8px;padding-top:12px}.problem-card.future-depth-1{--stack-shift:78px}.problem-card.future-depth-2{--stack-shift:126px}.problem-card.future-depth-3{--stack-shift:164px}.problem-card.future-depth-4{--stack-shift:188px}.problem-card.past-depth-1{--stack-shift:-78px}.problem-card.past-depth-2{--stack-shift:-126px}.problem-card.past-depth-3{--stack-shift:-164px}.problem-card.past-depth-4{--stack-shift:-188px}.game-play-shell.is-ready{border-inline:0;border-radius:0;flex-direction:column;min-height:auto;display:flex;overflow:visible}.game-play-shell.is-ready .game-control-panel{display:contents}.game-play-shell.is-ready .game-title-block{background:#fffffff0;order:1;padding:28px 16px 24px}.game-play-shell.is-ready .problem-stream-panel{order:2;min-height:clamp(230px,43svh,340px)}.game-play-shell.is-ready .ready-panel{order:3;margin:20px 20px 14px;box-shadow:0 12px 30px #2b5f9414}}.problem-operator,.problem-equals{font-style:normal}.problem-operator{color:#0a6fed}.problem-equals{color:#ef4056}@media (max-width:520px) and (max-height:760px){.progress-card{margin-bottom:8px;padding:10px 8px 9px}.progress-label,.score-row{margin-bottom:8px}.score-box{padding-block:10px}.score-box strong{margin-top:2px;font-size:1.25rem}.problem-stream-panel{min-height:clamp(210px,32svh,280px)}.problem-card{min-height:64px;transform:translate(-50%, calc(-50% + var(--stack-shift,0px))) scale(var(--depth-scale,.88));top:50%}.problem-card.current{min-height:84px}.problem-card.future-depth-1{--stack-shift:70px}.problem-card.future-depth-2{--stack-shift:112px}.problem-card.future-depth-3{--stack-shift:146px}.problem-card.future-depth-4{--stack-shift:168px}.problem-card.past-depth-1{--stack-shift:-70px}.problem-card.past-depth-2{--stack-shift:-112px}.problem-card.past-depth-3{--stack-shift:-146px}.problem-card.past-depth-4{--stack-shift:-168px}.answer-panel{padding-block:12px;padding-bottom:calc(12px + env(safe-area-inset-bottom));gap:8px}.answer-panel input{height:50px}.answer-panel .primary-button,.answer-panel .secondary-button{min-height:40px}}@media (min-width:821px){.keypad-answer-panel .problem-reset-button{z-index:24;width:auto;min-height:34px;margin-top:0;padding:0 14px;font-size:.82rem;position:absolute;top:100%;right:20px}}@media (max-width:520px) and (max-height:620px){.progress-card,.score-row{margin-inline:12px}.score-label{font-size:.72rem}.problem-stream-panel{min-height:clamp(230px,38svh,300px)}.problem-card.current{min-height:86px}.problem-card.current strong{font-size:clamp(1.75rem,10vw,2.35rem)}.answer-panel label{font-size:.84rem}.answer-panel input{height:46px;font-size:1.65rem}.keypad-answer-panel{gap:7px}.number-keypad{gap:6px}.keypad-button{min-height:38px;font-size:1.12rem}.answer-panel small{display:none}}@media (min-width:821px){.game-play-shell.is-active .progress-card{z-index:2;border-radius:var(--radius-m);border-color:#d9e5f4;grid-area:2/1/auto/-1;margin:16px 24px;padding:12px 18px;box-shadow:0 10px 26px #2b5f941f}.game-play-shell.is-active .progress-label{margin:0 auto 8px}.game-play-shell.is-active .progress-track{padding:8px}.game-play-shell.is-active .score-row{grid-area:3/1;grid-template-columns:1fr;align-content:start;gap:18px;margin:0 0 24px 24px;display:grid}.game-play-shell.is-active .score-box{border-radius:var(--radius-m);place-content:center;gap:14px;min-height:150px;padding:20px 12px;display:grid}.game-play-shell.is-active .score-box strong{font-size:clamp(1.8rem,2.7vw,2.6rem)}.game-play-shell.is-active .time-limit-note{grid-area:3/1;align-self:end;margin:0 0 24px 24px}.game-play-shell.is-active .problem-stream-panel{grid-area:3/2;min-height:470px}.game-play-shell.is-active .problem-stream{inset:0 6%}.game-play-shell.is-active .answer-panel{border-radius:var(--radius-m);grid-area:3/3;align-self:start;margin:0 24px 24px 0;padding:20px;box-shadow:0 10px 26px #2b5f941a}.game-play-shell.is-active .keypad-button{border-radius:var(--radius-m);min-height:72px;font-size:1.8rem}.game-play-shell.is-active .operator-key{min-height:112px;font-size:2.5rem}.game-play-shell.is-active .problem-card{width:min(640px,94%);min-height:96px}.game-play-shell.is-active .problem-card.current{border-radius:var(--radius-m);background:#fff;border-width:1px;min-height:220px;top:31%;transform:translate(-50%,-50%)scale(1)}.game-play-shell.is-active .problem-card.current strong{font-size:clamp(3.2rem,5.4vw,4.8rem)}.game-play-shell.is-active .problem-card span{border-radius:var(--radius-s);color:#fff;background:#0a6fed;padding:6px 12px;font-size:.82rem;position:absolute;top:14px;left:16px;box-shadow:0 4px 10px #0a6fed38}.game-play-shell.is-active .problem-card.future-depth-1{--stack-shift:196px}.game-play-shell.is-active .problem-card.future-depth-2{--stack-shift:302px}.game-play-shell.is-active .problem-card.future-depth-3,.game-play-shell.is-active .problem-card.future-depth-4,.game-play-shell.is-active .problem-card.past{opacity:0}.game-play-shell.is-active .problem-card.next{opacity:.78}.game-play-shell.is-ready .ready-panel{grid-area:2/1/4;align-self:start;margin:0 0 24px 24px}.game-play-shell.is-ready .problem-stream-panel{grid-area:2/2/4/-1;min-height:590px;margin:0 24px 24px 0}}@media (max-width:820px){.game-play-shell.is-active,.game-play-shell.is-ready{background:#f7fbff}.game-play-shell.is-active .game-title-block,.game-play-shell.is-ready .game-title-block{color:#fff;background-color:#0a6fed;background-image:url(../media/title-background.2_w7kt5hkiq33.png);background-position:50%;background-repeat:repeat;background-size:627px 427px;padding:28px 16px}.game-play-shell.is-active .game-title-block h1{font-size:clamp(2.75rem,13vw,3.6rem);line-height:1}.game-play-shell.is-active .game-title-block p{color:#fff;margin-top:10px;font-size:1.05rem}.progress-card,.game-play-shell.is-active .progress-card{z-index:2;border-radius:var(--radius-m);margin:0 12px 14px;padding:12px 10px 10px;box-shadow:0 10px 26px #2b5f941f}.score-row,.game-play-shell.is-active .score-row{gap:10px;margin:0 12px 14px}.score-box,.game-play-shell.is-active .score-box{border-radius:var(--radius-m);min-height:112px;padding:16px 10px}.score-box strong{margin-top:6px;font-size:clamp(1.65rem,7vw,2.2rem)}.problem-stream-panel,.game-play-shell.is-active .problem-stream-panel,.game-play-shell.is-ready .problem-stream-panel{min-height:clamp(330px,43svh,440px)}.game-play-shell.is-active .problem-stream,.game-play-shell.is-ready .problem-stream{inset:0 4%}.problem-card{border-radius:var(--radius-m);width:min(100%,500px);min-height:76px}.problem-card.current{border-radius:var(--radius-m);background:#fff;border-width:3px;min-height:156px;top:31%;transform:translate(-50%,-50%)scale(1)}.problem-card.current strong{font-size:clamp(2.65rem,13vw,3.8rem)}.problem-card span{border-radius:var(--radius-s);color:#fff;background:#0a6fed;padding:5px 9px;font-size:.74rem;position:absolute;top:10px;left:12px}.problem-card.future-depth-1{--stack-shift:146px}.problem-card.future-depth-2{--stack-shift:220px}.problem-card.future-depth-3,.problem-card.future-depth-4,.problem-card.past{opacity:0}.problem-card.next{opacity:.76}.answer-panel,.game-play-shell.is-active .answer-panel{border-radius:var(--radius-m);border:1px solid #d7e5f7;margin:0 12px 20px;position:static;box-shadow:0 10px 26px #2b5f941a}.answer-panel input{height:66px}.keypad-button{border-radius:var(--radius-m);background:#fff;min-height:clamp(44px,8svh,66px);font-size:1.65rem}.keypad-button.operator-key{min-height:clamp(68px,12svh,96px);font-size:2.35rem}.game-play-shell.is-ready .ready-panel{border-radius:var(--radius-m);margin:0 16px 20px}}@media (min-width:821px){.game-play-shell.is-active{grid-template-columns:minmax(200px,.72fr) minmax(0,1.52fr) minmax(240px,.9fr);justify-content:normal}.game-play-shell.is-active 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