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img{border-radius:50%;width:30px;height:30px}.boot-loader{z-index:1;background:#ffffff29;border-radius:999px;width:min(210px,58vw);height:4px;position:relative;overflow:hidden;box-shadow:0 0 16px #767bff6b}.boot-loader span{border-radius:inherit;transform-origin:0;background:linear-gradient(90deg,#fff,#7d82ff,#fff);width:100%;height:100%;animation:2.4s forwards boot-load;display:block}@keyframes retro-logo{0%{opacity:0;filter:blur(10px)drop-shadow(0 0 #7477ff00);transform:translateY(26px)scale(.72)}38%{opacity:1;filter:blur()drop-shadow(0 0 30px #7477ffb8);transform:translateY(0)scale(1.08)}to{opacity:1;filter:blur()drop-shadow(0 0 18px #7477ff80);transform:translateY(0)scale(1)}}@keyframes boot-text-fade{0%,42%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes scanline-drift{0%{transform:translateY(0)}to{transform:translateY(5px)}}@keyframes boot-load{0%{transform:scaleX(0)}to{transform:scaleX(1)}}.menu-screen,.lesson-screen{flex-direction:column;justify-content:center;min-height:calc(100vh - 42px);display:flex}.menu-screen{text-align:center}#historyScreen{justify-content:flex-start;width:min(100%,720px)}.language-logo{background:#fff;border-radius:24px;align-self:center;width:min(62vw,240px);margin-bottom:24px;box-shadow:0 20px 46px #1f125b38}.main-menu-logo{background:#fff;border-radius:26px;align-self:center;width:min(64vw,260px);margin:0 0 18px;box-shadow:0 0 0 1px #ffffff2e,0 16px 32px #37206e47}.language-menu{gap:12px;display:grid}.volume-control{color:#202735;background:#fffffff5;border-radius:14px;gap:12px;margin:0 0 18px;padding:16px;display:grid;box-shadow:0 6px #ffffff57}.volume-control label{justify-content:space-between;align-items:center;gap:12px;font-size:.98rem;font-weight:900;display:flex}.volume-control input{accent-color:#4b3ff2;width:100%}.volume-control 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18px 24px;display:grid;position:relative;overflow:hidden;box-shadow:0 24px 54px #1f125b40}.certificate-symbols{color:#5148e71f;letter-spacing:1.1rem;pointer-events:none;word-spacing:2.5rem;font-size:2rem;font-weight:950;position:absolute;inset:22px}.certificate-brand{place-items:center;width:100%;margin-bottom:4px;display:grid;position:relative}.certificate-brand img{object-fit:contain;border-radius:16px;width:min(62vw,245px);max-height:190px}.certificate-seal{background:radial-gradient(circle,#ffeaa2,#e4a823);border-radius:50%;place-items:center;width:78px;height:78px;font-size:2.7rem;display:grid;box-shadow:0 8px #2a268433}.certificate-card h1{color:#071d76;letter-spacing:.13em;text-transform:uppercase;text-align:center;font-size:2.08rem}.certificate-card h2{color:#5148e7;letter-spacing:.28em;text-transform:uppercase;margin:-4px 0 12px;font-size:1.05rem}.certificate-card p,.certificate-card small{color:#071d76;text-align:center;margin:0;font-weight:850;line-height:1.35}.certificate-card>strong{color:#4f46e5;text-align:center;border-bottom:2px solid #071d76;width:86%;min-height:44px;font-size:1.85rem;font-weight:950}.certificate-line{display:none}.certificate-achievements{grid-template-columns:repeat(2,1fr);gap:12px;width:100%;margin:16px 0 4px;display:grid}.certificate-achievements div{text-align:left;grid-template-columns:46px 1fr;align-items:center;gap:8px;display:grid}.certificate-achievements span{background:#5148e71f;border-radius:50%;grid-row:span 2;place-items:center;width:46px;height:46px;font-size:1.8rem;display:grid}.certificate-achievements .platinum-icon{filter:saturate(.75)hue-rotate(178deg);background:linear-gradient(135deg,#eef4fb,#9fb2c8);box-shadow:inset 0 2px 8px #ffffffb8,0 5px #3d526f40}.certificate-achievements strong{color:#6b2be8;font-size:.96rem;font-weight:950}.certificate-achievements small{text-align:left;font-size:.78rem}.certificate-footer{font-size:.95rem;margin-top:8px!important}.language-flag{font-size:1.45rem;line-height:1}.options-button,.fullscreen-button{color:#202735;background:#fffffff0;border-radius:999px;align-self:flex-end;min-width:92px;min-height:56px;margin-bottom:12px;padding:0 18px;font-size:1rem;font-weight:950;box-shadow:0 7px #582aaa57,0 14px 24px #1c10562e}.operation-top-actions{justify-content:center;align-self:center;align-items:center;gap:12px;width:min(100%,430px);margin-bottom:12px;display:flex}.operation-top-actions .history-button,.operation-top-actions .options-button,.operation-top-actions .fullscreen-button{margin:0}.operation-top-actions .history-button{color:#20164d;background:#fff;border-radius:999px;min-width:178px;min-height:56px;font-size:1rem;box-shadow:0 7px #582aaa57,0 14px 24px #1c10562e}.operation-top-actions .history-button span,.operation-top-actions .support-button span{background:#fff4c2;border-radius:50%;place-items:center;width:36px;height:36px;display:grid}.operation-top-actions .options-button{flex:none;min-width:96px}.operation-top-actions .fullscreen-button{flex:none;min-width:126px}@media (width<=430px){.operation-top-actions{flex-wrap:wrap;gap:10px}.operation-top-actions .history-button{min-width:160px}.operation-top-actions .options-button,.operation-top-actions .fullscreen-button{min-width:118px}}.fullscreen-button{justify-content:center;align-items:center;gap:7px;display:inline-flex}.fullscreen-button span{font-size:1.05rem;line-height:1}.fullscreen-button.active{color:#fff;background:#202735}.safe-pill{color:#8d95a3;background:#f8f9fc;border-radius:999px;align-self:center;min-width:164px;margin-bottom:26px;padding:11px 22px;font-size:.94rem;font-weight:950;box-shadow:0 5px #261c5e2e}.streak-card{color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffff38;border-radius:999px;justify-content:center;align-self:center;align-items:center;gap:10px;min-width:228px;margin:0 0 24px;padding:10px 18px;font-weight:950;display:flex}.streak-card span{color:#ffffffd1}h1{color:#fff;margin:0;font-size:2.35rem;line-height:1.05}.screen-subtitle{color:#ffffffe0;margin:10px 0 40px;font-size:1rem;font-weight:800}.menu-list{gap:14px;margin-bottom:30px;display:grid}.rule-alert{color:#7c2d12;background:#fffffff0;border-radius:14px;margin:-18px 0 22px;padding:14px 16px;font-weight:900;line-height:1.35;box-shadow:0 5px #261c5e2e}.menu-card{min-height:90px;color:var(--accent);text-align:left;background:#fff;border-radius:14px;align-items:center;gap:16px;padding:16px;display:flex;box-shadow:0 6px #ffffff7a}.menu-card strong{font-size:1.28rem;font-weight:950}.menu-card:disabled,.mixed-button:disabled{opacity:.54;filter:grayscale(.35)}.menu-icon{background:var(--soft);border-radius:50%;place-items:center;width:56px;height:56px;font-size:1.6rem;font-weight:950;display:grid}.menu-badge-shadow{object-fit:contain;opacity:.72;filter:drop-shadow(0 5px 8px #20164d2e);width:46px;height:46px;margin-left:auto}.menu-badge-shadow.earned{opacity:1;filter:drop-shadow(0 0 8px #ffca3185)drop-shadow(0 7px 10px #20164d33)}.mixed-button{color:#fff;background:linear-gradient(135deg,#ffc42f,#ff751c);border-radius:14px;justify-content:center;align-items:center;gap:12px;min-height:76px;font-size:1.38rem;display:flex;box-shadow:0 6px #74263c6b}.reinforcement-button{color:#202735;background:#fff;border-radius:14px;justify-content:center;align-items:center;gap:12px;min-height:76px;margin-bottom:14px;font-size:1.28rem;display:flex;box-shadow:0 6px #ffffff7a}.history-button{color:#fff;background:#202735;border-radius:14px;justify-content:center;align-items:center;gap:12px;min-height:70px;margin-bottom:14px;font-size:1.18rem;display:flex;box-shadow:0 6px #14182261}.operation-top-actions{justify-content:space-between;align-items:center;gap:12px;width:100%;margin-bottom:12px;display:flex}.operation-top-actions .history-button,.operation-top-actions .options-button{border-radius:999px;min-height:56px;margin:0;padding:0 20px;box-shadow:0 7px #582aaa61,0 14px 24px #1c10562e!important}.top-achievements-button{color:#20164d;background:#fff;font-size:1.02rem}.top-achievements-button span{background:#fff4c2;border-radius:50%;place-items:center;width:34px;height:34px;display:grid}.support-button{color:#202735;background:#fffffff0;border-radius:14px;justify-content:center;align-items:center;gap:10px;min-height:58px;margin-bottom:12px;font-size:1.02rem;display:flex;box-shadow:0 5px #ffffff57}.support-button span{color:#4f46e5;background:#eef2ff;border-radius:50%;place-items:center;width:32px;height:32px;font-weight:950;display:grid}.remove-ads-button{color:#202735;background:linear-gradient(135deg,#fff7ed,#fff);border-radius:14px;justify-content:center;align-items:center;gap:10px;min-height:64px;margin-bottom:14px;font-size:1.08rem;display:flex;box-shadow:0 5px #ffffff5c}.remove-ads-button.purchased{color:#166534;background:linear-gradient(135deg,#dcfce7,#fff)}.final-marathon-button{color:#202735;background:linear-gradient(135deg,#edf2ff,#fff);border-radius:14px;justify-content:center;align-items:center;gap:12px;min-height:70px;margin-bottom:14px;font-size:1.18rem;display:flex;box-shadow:0 6px #ffffff6b}.final-marathon-button.locked{opacity:.45;filter:grayscale(.85)}.marathon-dialog p{white-space:pre-line}.onboarding-dialog{text-align:left}.onboarding-dialog h2,.onboarding-dialog p{text-align:center}.onboarding-list{color:#344054;gap:10px;margin:18px 0 22px;padding-left:24px;font-weight:850;line-height:1.35;display:grid}.notification-button{color:#202735;background:#fffffff0;border-radius:14px;justify-content:center;align-items:center;gap:10px;min-height:62px;margin-bottom:14px;font-size:1.08rem;display:flex;box-shadow:0 5px #ffffff57}.back-button{top:max(56px, calc(env(safe-area-inset-top,0px) + 18px));color:#202735;background:#fffffff2;border-radius:999px;place-items:center;min-width:78px;height:46px;padding:0 16px;font-size:.95rem;font-weight:950;display:grid;position:fixed;left:max(16px,50vw - 234px);box-shadow:0 5px #261c5e2e}.native-app .back-button{top:max(62px, calc(env(safe-area-inset-top,0px) + 24px))}.selected-operation-card{background:linear-gradient(135deg, #fffffffa, #ffffffe6), var(--operation-soft,#f3e8ff);color:#202735;text-align:left;border-radius:28px;grid-template-columns:auto 1fr;align-items:center;gap:22px;width:min(100%,460px);min-height:126px;margin:0 auto 48px;padding:24px 28px;display:grid;box-shadow:0 18px 34px #27145b2e,inset 0 0 0 2px #ffffff73}.selected-operation-icon{background:linear-gradient(135deg, var(--operation-color,#7c3aed), color-mix(in srgb, var(--operation-color,#7c3aed) 76%, #fff));color:#fff;width:86px;height:86px;box-shadow:0 0 0 12px var(--operation-soft,#f3e8ff);border-radius:24px;place-items:center;font-size:3.25rem;font-weight:950;line-height:1;display:grid}.selected-operation-copy{gap:6px;display:grid}.selected-operation-copy strong{color:var(--operation-color,#4f46e5);font-size:2rem;font-weight:950;line-height:1.05}.selected-operation-copy span{color:#697386;font-size:1.05rem;font-weight:800;line-height:1.25}.table-menu{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.table-card{color:#202735;background:#fff;border-radius:14px;place-items:center;min-height:84px;font-size:2.1rem;font-weight:950;display:grid;position:relative;overflow:visible;box-shadow:0 6px #ffffff7a}.table-card small{color:#4f46e5;text-align:center;font-size:.82rem;font-weight:950;position:absolute;bottom:8px;left:0;right:0}.table-card-main{place-items:center;width:100%;display:grid}.table-medal{z-index:2;filter:drop-shadow(0 5px 6px #341e5e47);font-size:1.55rem;line-height:1;position:absolute;top:-16px;right:18px}.review-list{gap:8px;margin-bottom:22px;display:grid}.review-row{color:#202735;background:#fffffff0;border-radius:12px;justify-content:center;align-items:center;min-height:48px;padding:10px 16px;font-size:1.12rem;font-weight:900;display:flex;box-shadow:0 4px #ffffff57}.lesson-top{grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:12px;display:grid}.exit-lesson-button{color:#202735;background:#fffffff0;border-radius:999px;align-self:flex-start;min-width:78px;min-height:40px;margin-bottom:12px;font-weight:950;box-shadow:0 4px #261c5e2e}.combo-pill{color:#202735;background:#fffffff0;border-radius:14px;justify-content:space-between;align-items:center;min-height:56px;padding:10px 14px;display:flex;box-shadow:0 5px #261c5e2e}.combo-pill span{color:#7d8490;font-size:.86rem;font-weight:900}.combo-pill strong{font-size:1.55rem;font-weight:950}.lesson-progress{color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fff3;border-radius:14px;margin-bottom:16px;padding:12px}.lesson-progress>div:first-child{justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px;font-weight:950;display:flex}.lesson-progress strong{color:#ffffffdb}.lesson-progress-track{background:#ffffff47;border-radius:999px;height:12px;overflow:hidden}.lesson-progress-track span{border-radius:inherit;background:#fff;width:0;height:100%;transition:width .22s;display:block}.question-panel{color:#202735;background:#fff;border:0;border-radius:28px;padding:34px 32px 32px;box-shadow:0 22px 44px #1f125b38}.question-panel.right{outline:4px solid #24c36059}.question-panel.wrong{outline:4px solid #ff696c59}.equation{text-align:center;grid-template-columns:repeat(5,auto);justify-content:center;align-items:center;gap:clamp(18px,7vw,42px);margin-bottom:26px;font-size:2.65rem;font-weight:950;display:grid}.equation span:nth-child(4){color:#7d82ff}.answer-display{color:#202735;background:#f1f2f4;border-radius:14px;place-items:center;min-height:94px;font-size:2rem;font-weight:950;display:grid;box-shadow:inset 0 2px 6px #21283514,inset 0 -3px #21283514}.answer-display.right{color:#159447;background:#e9fbea}.answer-display.wrong{color:#e04444;background:#fff0f0}.keypad{grid-template-columns:repeat(3,1fr);gap:9px 12px;width:min(100%,386px);margin:24px auto 0;display:grid}.keypad button{color:#202735;background:#fff;border-radius:14px;min-height:66px;font-size:1.7rem;font-weight:950;box-shadow:0 6px #20273529}.keypad .clear-key{color:#fff;background:#ff6b70}.keypad .ok-key{color:#fff;background:#27c45f}.lesson-ad-slot{color:#ffffff6b;background:#ffffff14;border:1px solid #ffffff29;border-radius:4px;place-items:center;width:min(100%,386px);min-height:92px;margin:18px auto 0;font-size:.82rem;font-weight:950;display:none}.lesson-ad-slot.hidden{display:none}.lesson-result{color:#fff;text-align:center;min-height:32px;margin-top:16px;font-size:1.1rem;font-weight:950}.confirm-overlay{z-index:20;background:#160e3694;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.confirm-dialog{color:#202735;text-align:center;background:#fff;border-radius:22px;width:min(100%,360px);padding:22px;box-shadow:0 24px 54px #1f125b47}.confirm-dialog h2{margin:0 0 8px;font-size:1.55rem}.confirm-dialog p{color:#6b7280;margin:0 0 18px;font-weight:850}.confirm-dialog button{border-radius:14px;width:100%;min-height:52px;font-weight:950;display:block}.confirm-exit{color:#fff;background:#ff6b70;margin-bottom:10px}.cancel-exit{color:#fff;background:#27c45f}.medal-result{color:#202735;background:#fffffff0;border-radius:18px;justify-items:center;gap:8px;margin:-18px 0 22px;padding:18px;display:grid;box-shadow:0 6px #ffffff57}.medal-result.gold{background:linear-gradient(135deg,#fff7c2,#ffd447)}.medal-result.silver{background:linear-gradient(135deg,#f8fafc,#cbd5e1)}.medal-result.bronze{background:linear-gradient(135deg,#ffe6c7,#d88945)}.medal-icon{font-size:3.2rem;line-height:1}.medal-icon img{filter:drop-shadow(0 6px 5px #542a7838);width:72px;height:auto}.medal-result strong{font-size:1.7rem;font-weight:950}.medal-result span,.medal-result p,.medal-result small{margin:0;font-weight:900}.medal-result p{line-height:1.35}.medal-result small{color:#6b7280;line-height:1.35}.completion-stats{grid-template-columns:repeat(2,1fr);gap:10px;margin:-8px 0 18px;display:grid}.completion-stats div{color:#202735;background:#fffffff0;border-radius:14px;align-content:center;min-height:68px;padding:10px;display:grid;box-shadow:0 5px #ffffff57}.completion-stats span{color:#7d8490;font-size:.78rem;font-weight:950}.completion-stats strong{margin-top:3px;font-size:1.28rem;font-weight:950}.share-button{color:#fff;background:#202735;border-radius:14px;justify-content:center;align-items:center;gap:10px;width:100%;min-height:58px;margin-bottom:12px;font-weight:950;display:flex;box-shadow:0 6px #14182261}.memory-tip{color:#202735;text-align:left;background:#fffffff0;border-radius:18px;margin:-8px 0 22px;padding:16px;box-shadow:0 6px #ffffff57}.memory-tip strong{color:#4f46e5;margin-bottom:8px;font-size:1.1rem;font-weight:950;display:block}.memory-tip-equation{border-top:1px solid #4f46e529;margin-top:10px;padding-top:10px}.memory-tip-equation span{color:#202735;font-size:1.05rem;font-weight:950;display:block}.memory-tip p{color:#4b5563;margin:6px 0 0;font-weight:850;line-height:1.35}.history-header{grid-template-columns:auto 1fr;align-items:center;column-gap:12px;min-height:64px;margin:4px 0 18px;display:grid}.history-header h1{color:#fff;text-align:left;text-shadow:0 6px #2a126638;margin:0;font-size:clamp(1.7rem,7vw,2.45rem);line-height:1}.history-back-button{color:#20164d;background:#fffffff0;border-radius:999px;justify-content:center;align-items:center;min-width:104px;min-height:54px;font-size:1.02rem;font-weight:950;display:inline-flex;box-shadow:0 6px #582aaa57,0 14px 24px #1c105638}.history-stats,.medal-stats{gap:10px;margin-bottom:12px;display:grid}.history-stats{grid-template-columns:repeat(2,1fr)}.medal-stats{grid-template-columns:repeat(3,1fr)}.history-stats>div,.medal-stats>div{color:#202735;background:#ffffff2b;border-radius:18px;align-content:center;gap:4px;min-height:70px;padding:12px 8px;display:grid;box-shadow:inset 0 0 0 1px #ffffff1f,0 8px 18px #230f5b24}.history-stats span,.medal-stats span{color:#ffffffd1;font-size:clamp(.7rem,2.8vw,.92rem);font-weight:950}.history-stats strong,.medal-stats strong{color:#fff;font-size:clamp(1.2rem,5vw,1.7rem);font-weight:950}.medal-stats .gold strong{color:#ffe58a}.medal-stats .silver strong{color:#e5e7eb}.medal-stats .bronze strong{color:#ffc185}.achievements-board{text-align:left;grid-template-columns:1fr;gap:16px;margin:18px 0;display:grid}.achievement-profile,.achievement-section{box-sizing:border-box;color:#202735;background:#fffffff5;border-radius:24px;width:100%;padding:18px;overflow:hidden;box-shadow:0 8px #7330be52,0 18px 34px #1c10562e}.achievement-profile{grid-template-columns:96px 1fr 1fr;align-items:center;gap:16px;padding:18px 18px 20px;display:grid}.achievement-avatar-slot{background:#fff 50%/contain no-repeat;border:4px solid #fff;border-radius:50%;grid-row:span 2;width:86px;height:86px;box-shadow:0 8px 18px #2b146c2e}.achievement-profile span,.achievement-section h2,.fraction-progress-row span{color:#7a8191;font-size:clamp(.72rem,2.7vw,.88rem);font-weight:900}.achievement-profile strong{color:#20164d;margin-top:3px;font-size:clamp(1rem,4.2vw,1.45rem);font-weight:950;display:block}.achievement-section h2{color:#fff;background:linear-gradient(135deg,#7c35f3,#5a21d7);align-items:center;gap:8px;margin:-18px -18px 16px;padding:14px 18px;font-size:clamp(1rem,4vw,1.35rem);line-height:1.1;display:flex}.achievement-section h2 span{background:#ffffff2e;border-radius:50%;place-items:center;width:30px;height:30px;display:inline-grid}.achievement-medal-grid{box-sizing:border-box;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;width:100%;display:grid}.achievement-medal-item,.badge-item{box-sizing:border-box;color:#7b7198;text-align:center;background:#f4f0ff;border-radius:14px;place-items:center;gap:4px;min-width:0;min-height:76px;padding:8px 5px;display:grid}.achievement-medal-item.earned,.badge-item.earned{color:#20164d;background:linear-gradient(135deg,#fff7d6,#fff)}.achievement-medal-item img{width:30px;height:auto}.achievement-medal-item>span{color:#c6bce0;font-size:1.2rem}.achievement-medal-item small,.badge-item small{overflow-wrap:anywhere;max-width:100%;font-size:clamp(.54rem,2.35vw,.72rem);font-weight:900;line-height:1.05}.badge-item small.complete,.badge-item small.started,.badge-item small.locked{border-radius:999px;padding:5px 8px}.badge-item small.complete{color:#15803d;background:#dcfce7}.badge-item small.started{color:#c2410c;background:#ffedd5}.badge-item small.locked{color:#6b5f8f;background:#ede9fe}.badge-grid{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.badge-item{background:radial-gradient(circle at 50% 18%,#ffca3138,#0000 36%),#fff9ed;min-height:168px;position:relative}.badge-image{filter:drop-shadow(0 14px 18px #1d0c4c2e);width:min(76%,126px);height:auto}.badge-item.earned .badge-image{filter:drop-shadow(0 0 10px #ffde52c7)drop-shadow(0 12px 18px #531e9742)}.badge-item.earned:after{pointer-events:none;content:"";opacity:.7;background:radial-gradient(circle at 28% 20%,#ffffffbf,#0000 9%),radial-gradient(circle at 72% 32%,#ffeb59c7,#0000 8%),radial-gradient(circle at 58% 78%,#ffffff8c,#0000 7%);border-radius:16px;position:absolute;inset:12px}.badge-item strong{color:#20164d;font-size:clamp(.86rem,3.4vw,1.08rem);font-weight:950}.achievement-stars-card{grid-template-columns:132px 1fr;align-items:center;gap:16px;display:grid}.achievement-star-ring{--star-progress:0%;background:conic-gradient(#ffca31 var(--star-progress), #ebe4ff 0);color:#20164d;border-radius:50%;place-items:center;width:120px;height:120px;display:grid;position:relative}.achievement-star-ring:before{content:"";background:#fff;border-radius:50%;position:absolute;inset:12px}.achievement-star-ring span{z-index:1;font-size:2rem;line-height:1;position:relative}.achievement-star-ring strong{z-index:1;font-size:1.05rem;font-weight:950;position:relative}.achievement-stars-card>div:last-child{gap:8px;display:grid}.achievement-stars-card>div:last-child span,.achievement-stars-card small{color:#746f85;font-weight:900}.achievement-stars-card>div:last-child strong{color:#fff;background:#7c35f3;border-radius:12px;width:max-content;padding:8px 12px;font-size:1.05rem;font-weight:950;display:inline-flex}.fraction-progress-list{gap:10px;display:grid}.fraction-progress-row{border-bottom:1px solid #20164d14;grid-template-columns:minmax(105px,.8fr) 1fr minmax(90px,auto);align-items:center;gap:10px;padding:8px 0;display:grid}.fraction-progress-row>div:first-child{justify-content:flex-start;align-items:center;gap:10px;display:flex}.fraction-progress-row strong{color:#20164d;font-weight:950}.fraction-icon{border-radius:50%;flex:none;place-items:center;width:34px;height:34px;font-weight:950;display:inline-grid;color:#fff!important;font-size:1.15rem!important}.fraction-badge-shadow{object-fit:contain;opacity:.78;filter:drop-shadow(0 5px 8px #20164d29);flex:none;width:40px;height:40px}.fraction-progress-row.complete .fraction-badge-shadow{opacity:1;filter:drop-shadow(0 0 8px #ffca3180)drop-shadow(0 7px 10px #20164d2e)}.fraction-progress-track{background:#ebe4ff;border-radius:999px;height:10px;overflow:hidden}.fraction-progress-track span{border-radius:inherit;background:linear-gradient(90deg,#7c35f3,#ffca31);height:100%;display:block}.achievement-share-button{width:100%}@media (width<=620px){.achievement-profile{grid-template-columns:92px 1fr 1fr}.achievement-avatar-slot{grid-row:span 2;width:78px;height:78px}.achievement-section{margin-inline:-2px}.achievement-medals-section{padding-inline:12px}.achievement-medals-section h2{margin-inline:-12px}.achievement-medal-grid{gap:6px}.achievement-medal-item{border-radius:10px;min-height:62px;padding:5px 2px}.achievement-medal-item img{width:21px}.achievement-medal-item small{font-size:clamp(.46rem,2vw,.62rem);line-height:1}.achievement-stars-card{grid-template-columns:104px 1fr}.achievement-star-ring{width:92px;height:92px}.achievement-star-ring:before{inset:10px}.fraction-progress-row{grid-template-columns:1fr;gap:7px}}.progress-backup-panel{color:#202735;text-align:left;background:#fffffff2;border-radius:14px;gap:12px;margin-top:14px;padding:14px;display:grid;box-shadow:0 4px #ffffff5c}.progress-backup-panel strong{font-weight:950;display:block}.progress-backup-panel p{color:#6b7280;margin:4px 0 0;font-size:.82rem;font-weight:850;line-height:1.35}.backup-actions{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.backup-actions button{color:#fff;background:#202735;border-radius:12px;justify-content:center;align-items:center;gap:8px;min-height:48px;font-weight:950;display:flex;box-shadow:0 4px #14182247}.backup-actions span{font-size:1.1rem;line-height:1}.progress-backup-panel .backup-status{color:#4338ca;background:#eef2ff;border-radius:10px;margin-top:0;padding:8px 10px}.progress-backup-panel .backup-status.error{color:#be123c;background:#fff1f2}.history-panel{background:0 0;margin-top:14px;padding:0}.history-panel h2{display:none}#historyList{gap:12px;display:grid}.history-result-card{color:#202735;text-align:left;background:#fff;border-radius:14px;align-items:flex-start;gap:10px;padding:14px 16px;display:flex;box-shadow:0 4px #ffffff6b}.history-medal{background:#eef2ff;border-radius:50%;place-items:center;width:32px;height:32px;font-size:1.1rem;display:grid}.history-medal img{width:30px;height:auto}.history-main{flex:1;min-width:0}.history-card-top{justify-content:space-between;gap:12px;display:flex}.history-card-top div:last-child{text-align:right;min-width:78px}.history-card-top strong{font-size:.95rem;font-weight:950;display:block}.history-card-top div:last-child strong{color:#4f46e5;font-size:1.05rem}.history-card-top span,.empty-history{color:#8b93a3;font-size:.78rem;font-weight:850;display:block}.empty-history{text-align:center;background:#fff;border-radius:14px;padding:16px}.mistake-pills{flex-wrap:wrap;gap:6px;margin-top:10px;display:flex}.mistake-pills span{color:#dc2626;background:#fff5f5;border:1px solid #ffb4b4;border-radius:999px;padding:4px 9px;font-size:.76rem;font-weight:850;display:inline-flex}.history-row{color:#fff;text-align:left;text-align:left;padding:12px 0;border-top:1px solid #ffffff2e;justify-content:space-between;gap:14px;padding:12px 0;display:flex}.history-row>div:first-child{flex:1;min-width:0}.history-row:first-child{border-top:0}.history-row div:last-child{text-align:right}.history-row strong,.history-row span{display:block}.history-row span,.empty-history{color:#ffffffc7;font-size:.88rem;font-weight:800}.empty-history{text-align:left;margin:0}.mistake-summary{color:#ffffffb8;margin-top:8px;display:block}.mistake-details{margin-top:8px}.mistake-details summary{cursor:pointer;color:#fff;font-size:.9rem;font-weight:950}.mistake-details div{gap:6px;margin-top:8px;display:grid}.mistake-details p{color:#fff;background:#ffffff24;border-radius:8px;margin:0;padding:8px;font-size:.88rem;font-weight:850}.mistake-details p span{color:#ffb4b4;text-decoration:line-through;display:inline}.mistake-details p strong{color:#9ff3b5;margin-left:8px;display:inline}.menu-card:active,.mixed-button:active,.history-button:active,.support-button:active,.backup-actions button:active,.remove-ads-button:active,.final-marathon-button:active,.reinforcement-button:active,.notification-button:active,.exit-lesson-button:active,.options-button:active,.fullscreen-button:active,.language-button:active,.name-form button:active,.share-button:active,.table-card:active,.back-button:active,.history-back-button:active,.platform-back-button:active,.keypad button:active{transform:translateY(3px);box-shadow:0 3px #20273529}.app-shell{width:min(100%,560px);padding:28px 28px 34px}.language-logo,.main-menu-logo{border:7px solid #ffffff7a;border-radius:36px;box-shadow:0 18px #5b2fcb73,0 28px 48px #1c105652!important}.language-logo{width:min(64vw,310px);margin-bottom:30px}.main-menu-logo{width:min(66vw,320px);margin-bottom:22px}.volume-control,.name-form,.selected-operation-card,.language-button,.menu-card,.table-card,.review-row,.question-panel,.answer-display,.keypad button,.lesson-progress,.lesson-stat{box-shadow:0 7px #7330be6b,0 16px 28px #1c105633!important}.volume-control{border-radius:24px;gap:18px;margin-bottom:18px;padding:24px 24px 22px}.volume-control label{color:var(--ink);font-size:1.1rem}.volume-control button,.name-form button{background:linear-gradient(135deg,#18245a,#08143e);border-radius:16px;min-height:58px;font-size:1.12rem;font-weight:950}.language-menu{gap:14px}.language-button{min-height:78px;color:var(--ink);text-align:left;border-radius:18px;justify-content:flex-start;gap:18px;padding:0 24px;font-size:1.22rem}.language-button:after{color:#7c35f3;content:"›";margin-left:auto;font-size:2.2rem;font-weight:950}.language-flag{background:#fff;border-radius:50%;place-items:center;width:48px;height:48px;font-size:1.72rem;display:grid;box-shadow:0 6px 14px #121b3e2e}.avatar-picker{grid-template-columns:repeat(2,minmax(0,110px));justify-content:center;gap:18px;margin:-16px 0 24px;display:grid}.avatar-option{aspect-ratio:1;background:#ffffffeb;border:4px solid #ffffffc7;border-radius:28px;place-items:center;display:grid;box-shadow:0 7px #582aaa57,0 14px 24px #1c105633}.avatar-option.selected{border-color:#ffca31;box-shadow:0 0 0 5px #ffca3138,0 7px #582aaa57,0 16px 28px #1c10563d}.avatar-option img{object-fit:contain;width:86%;height:86%}.options-button,.fullscreen-button,.back-button,.exit-lesson-button{color:#20164d;background:#fff;border-radius:999px;min-height:56px;padding:0 22px;font-size:1.02rem;box-shadow:0 7px #582aaa6b,0 14px 24px #1c105638!important}.options-button:before{color:#7c35f3;content:"⚙";margin-right:8px}h1{text-shadow:0 6px #2a126633}.screen-subtitle{color:#ffffffd6;font-size:1.08rem}.streak-card{background:#ffffff2e;min-width:270px;box-shadow:inset 0 0 0 1px #ffffff2e,0 10px 20px #22115c33}.menu-list{gap:16px}.menu-card{border-left:5px solid var(--accent);border-radius:22px;min-height:88px;padding:16px 24px;position:relative}.menu-card strong{font-size:1.35rem}.menu-icon{width:64px;height:64px;color:var(--accent);font-size:2rem}.menu-arrow{color:#7c35f3;margin-left:2px;font-size:2.4rem;font-weight:950;line-height:1}.selected-operation-card{border-radius:999px;grid-template-columns:auto auto;gap:14px;width:max-content;max-width:100%;min-height:86px;margin-bottom:34px;padding:16px 28px}.selected-operation-icon{width:44px;height:44px;box-shadow:none;border-radius:12px;font-size:2rem}.selected-operation-copy{gap:0}.selected-operation-copy strong{color:#291466;font-size:1.35rem}.selected-operation-copy span{display:none}.table-menu{gap:16px}.table-card{color:#291466;border-radius:22px;min-height:112px;font-size:2.65rem;overflow:hidden}.table-card.mastered{outline:3px solid #ffc928}.table-stars-badge{color:#5b2a1c;background:linear-gradient(135deg,#ffd84c,#ff8f2d);border-radius:999px;justify-content:center;align-items:center;gap:2px;min-width:42px;height:42px;font-size:1rem;font-weight:950;display:inline-flex;position:absolute;top:12px;right:16px;box-shadow:0 4px #9146143d}.table-stars-badge span{color:#fff;text-shadow:0 1px #78391447}.table-medal-img{filter:drop-shadow(0 5px 4px #562c8238);width:42px;height:auto;position:absolute;top:-2px;right:14px}.table-card small{color:#6d3df3;font-size:.92rem;bottom:9px}.review-list{gap:12px}.review-row{border-radius:17px;min-height:66px;font-size:1.24rem}.review-row strong{color:#7c55f3;font-size:1.35rem}.mixed-button{background:linear-gradient(135deg,#ffc42f,#ff751c);border-radius:18px;min-height:78px}.lesson-header{grid-template-columns:auto 1fr;align-items:center;gap:12px;margin-bottom:14px;display:grid}.lesson-stats-bar{grid-template-columns:1fr 1.2fr .86fr;gap:10px;min-width:0;display:grid}.lesson-stat{background:#ffffff21;border:1px solid #ffffff2e;border-radius:20px;grid-template-columns:auto 1fr;align-items:center;column-gap:8px;min-height:58px;padding:8px 10px;display:grid}.lesson-stat-icon{filter:drop-shadow(0 5px 4px #21125340);grid-row:span 2;font-size:1.82rem}.lesson-stat strong{color:#fff;font-size:1.05rem;font-weight:950;line-height:1}.lesson-stat small{color:#ffffffe6;font-size:.72rem;font-weight:800}.level-stat{grid-template-columns:auto 1fr}.level-track{background:#ffffff59;border-radius:999px;height:8px;display:block;overflow:hidden}.level-track span{border-radius:inherit;background:linear-gradient(90deg,#54e85f,#66d4ff,#fff);width:48%;height:100%;display:block}.lesson-progress{background:#ffffff21;border-radius:22px;padding:18px}.lesson-progress-track{height:16px}.lesson-progress-track span{background:linear-gradient(90deg,#65ef4d,#8dff56)}.question-panel{border-radius:30px;padding:38px 28px 32px;position:relative}.equation{color:#21105b;grid-template-columns:repeat(5,auto);justify-content:center;gap:clamp(20px,7.5vw,48px);margin-bottom:28px;font-size:3rem}.equation span:nth-child(4),.equation span:nth-child(5){color:#8b4df4}.question-helper{color:#69728a;text-align:center;margin:0;font-size:1.05rem;font-weight:900;display:none}.answer-display{color:#21105b;background:linear-gradient(135deg,#fffaff,#fff);border:3px solid #ecd8ff;border-radius:22px;min-height:86px;box-shadow:inset 0 0 0 2px #ddbeff85,0 10px 22px #5f26a524!important}.keypad{gap:12px 14px;width:min(100%,420px);margin-top:22px}.keypad button{color:#21105b;border-radius:18px;min-height:72px;font-size:2rem}.keypad .clear-key{background:linear-gradient(135deg,#ff6580,#ff345d)}.keypad .ok-key{background:linear-gradient(135deg,#31d66f,#15bd55)}@media (height<=760px){.app-shell{padding-top:12px}.native-app .app-shell{padding-top:max(44px, calc(env(safe-area-inset-top,0px) + 14px))}.native-app.lesson-active .app-shell{padding-top:max(104px, calc(env(safe-area-inset-top,0px) + 76px))}.menu-screen,.lesson-screen{justify-content:flex-start}.safe-pill{margin-bottom:16px}.screen-subtitle{margin-bottom:22px}.menu-card{min-height:76px}.question-panel{padding:24px 22px}.review-row{min-height:42px}.equation{margin-bottom:18px;font-size:2.2rem}.answer-display{min-height:70px}.keypad button{min-height:54px}}@media (width<=520px){.native-app #lessonScreen{min-height:calc(100vh - 82px);padding-bottom:max(6px, env(safe-area-inset-bottom,0px));justify-content:flex-start;overflow:hidden}.native-app #lessonScreen .exit-lesson-button{min-width:82px;min-height:38px;margin-bottom:8px;padding:0 13px;font-size:.82rem}.native-app #lessonScreen .lesson-header{grid-template-columns:1fr;gap:7px;margin-bottom:8px}.native-app #lessonScreen .lesson-stats-bar{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.native-app #lessonScreen .lesson-stat{border-radius:14px;column-gap:6px;min-height:44px;padding:6px 7px}.native-app #lessonScreen .lesson-stat-icon{font-size:1.28rem}.native-app #lessonScreen .lesson-stat strong{font-size:.82rem}.native-app #lessonScreen .lesson-stat small{font-size:.62rem}.native-app #lessonScreen .lesson-progress{border-radius:16px;margin-bottom:8px;padding:8px 12px}.native-app #lessonScreen .lesson-progress>div:first-child{margin-bottom:7px;font-size:.9rem}.native-app #lessonScreen .lesson-progress-track{height:9px}.native-app #lessonScreen .question-panel{border-radius:24px;padding:24px 20px 22px}.native-app #lessonScreen .equation{gap:clamp(16px,6vw,28px);margin-bottom:18px;font-size:clamp(2.15rem,10vw,2.9rem);line-height:1}.native-app #lessonScreen .question-helper{margin-bottom:12px;font-size:.9rem}.native-app #lessonScreen .answer-display{border-radius:16px;min-height:clamp(64px,8.4vh,78px);font-size:1.75rem}.native-app #lessonScreen .keypad{gap:clamp(8px,1.45vh,12px) 12px;width:min(100%,360px);margin-top:clamp(16px,2.4vh,24px)}.native-app #lessonScreen .keypad button{border-radius:16px;min-height:clamp(56px,7.4vh,70px);font-size:1.65rem}.native-app #lessonScreen .lesson-ad-slot{border-radius:4px;width:min(100%,360px);min-height:88px;margin-top:12px}.native-app #operationScreen .main-menu-logo{border-radius:22px;width:min(58vw,230px);margin-bottom:12px}.native-app #operationScreen .streak-card{min-width:0;margin-bottom:16px;padding:9px 16px;font-size:.95rem}.native-app #operationScreen h1{font-size:2.08rem;line-height:1.04}.native-app #operationScreen .screen-subtitle{margin:6px 0 18px;font-size:.98rem}.native-app #operationScreen .menu-list{gap:7px;margin-bottom:8px}.native-app #operationScreen .menu-card{border-radius:16px;min-height:68px;padding:10px 18px}.native-app #operationScreen .menu-card strong{font-size:1.18rem}.native-app #operationScreen .menu-icon{width:48px;height:48px}.native-app #operationScreen .menu-badge-shadow{width:38px;height:38px}.native-app #tableScreen,.native-app #reviewScreen{padding-top:24px}.native-app #tableScreen .selected-operation-card{border-radius:24px;gap:16px;min-height:104px;margin-bottom:28px;padding:18px 20px}.native-app #tableScreen .selected-operation-icon{width:70px;height:70px;box-shadow:0 0 0 9px var(--operation-soft,#f3e8ff);border-radius:20px;font-size:2.7rem}.native-app #tableScreen .selected-operation-copy strong{font-size:1.72rem}.native-app #tableScreen .selected-operation-copy span{font-size:.98rem}.native-app #tableScreen .safe-pill,.native-app #reviewScreen .safe-pill{min-height:46px;margin-bottom:18px;padding:9px 20px}.native-app #tableScreen h1,.native-app #reviewScreen h1{font-size:2.12rem}.native-app #tableScreen .screen-subtitle,.native-app #reviewScreen .screen-subtitle{margin:8px 0 24px}.native-app #reviewScreen .back-button{min-width:78px;height:42px;padding:0 14px;font-size:.86rem}.native-app #reviewScreen .safe-pill{min-height:40px;margin-bottom:10px;padding:7px 18px;font-size:.82rem}.native-app #reviewScreen h1{font-size:1.9rem;line-height:.98}.native-app #reviewScreen .screen-subtitle{margin:6px 0 12px;font-size:.86rem;line-height:1.15}.native-app #reviewScreen .review-list{gap:7px;margin-bottom:10px}.native-app #reviewScreen .review-row{border-radius:13px;min-height:43px;padding:7px 10px;font-size:.95rem}.native-app #reviewScreen .review-row strong{font-size:1.02rem}.native-app #reviewScreen .mixed-button{border-radius:14px;min-height:50px;font-size:1rem}.native-app #tableScreen .table-menu{gap:12px 14px}.native-app #tableScreen .table-card{border-radius:14px;min-height:78px;font-size:2rem}.native-app #tableScreen .table-medal-img{width:38px;top:-8px;right:12px}.native-app #tableScreen .table-card.mastered .table-card-main{transform:translateY(-9px)}.native-app #tableScreen .table-card small{font-size:.82rem;bottom:6px}}@media (width<=520px) and (height<=700px){.native-app #lessonScreen .exit-lesson-button{min-height:30px;margin-bottom:6px;font-size:.78rem}.native-app #lessonScreen .lesson-header{gap:6px}.native-app #lessonScreen .lesson-stat{min-height:38px;padding:5px 6px}.native-app #lessonScreen .lesson-stat-icon{font-size:1.05rem}.native-app #lessonScreen .lesson-stat strong{font-size:.74rem}.native-app #lessonScreen .lesson-progress{margin-bottom:8px;padding:7px 9px}.native-app #lessonScreen .lesson-progress>div:first-child{margin-bottom:5px;font-size:.82rem}.native-app #lessonScreen .question-panel{border-radius:18px;padding:18px 14px 16px}.native-app #lessonScreen .equation{gap:clamp(12px,5vw,22px);margin-bottom:11px;font-size:clamp(1.9rem,8.8vw,2.25rem)}.native-app #lessonScreen .question-helper{margin-bottom:8px;font-size:.78rem}.native-app #lessonScreen .answer-display{min-height:52px;font-size:1.5rem}.native-app #lessonScreen .keypad{gap:7px 9px;margin-top:11px}.native-app #lessonScreen .keypad button{min-height:48px;font-size:1.42rem}.native-app #lessonScreen .lesson-ad-slot{min-height:64px;margin-top:8px}}@media (width>=700px) and (height>=900px) and (orientation:portrait){.app-shell{width:min(100%,1120px);padding:70px 70px 76px}.menu-screen,.lesson-screen{justify-content:center;min-height:calc(100vh - 62px)}.menu-screen{justify-content:flex-start;padding-top:18px}.lesson-screen{justify-content:flex-start;padding-top:0}.lesson-top,.lesson-progress,.question-panel{width:min(100%,1010px);margin-inline:auto}.lesson-top{grid-template-columns:repeat(2,1fr);gap:18px;margin-bottom:18px}.combo-pill{border-radius:24px;min-height:122px;padding:24px 30px}.combo-pill span{font-size:1.45rem}.combo-pill strong{font-size:2.75rem}.lesson-progress{border-radius:24px;margin-bottom:34px;padding:24px 26px;font-size:1.55rem}.lesson-progress-track{height:26px}.question-panel{border-radius:46px;padding:82px 68px 72px}.equation{gap:18px;margin-bottom:76px;font-size:4.95rem}.answer-display{border-radius:28px;min-height:196px;font-size:3.25rem}.keypad{gap:20px 26px;width:min(100%,830px);margin-top:50px}.keypad button{border-radius:26px;min-height:142px;font-size:3.25rem}.language-menu,.menu-list,.table-menu,.review-list,.volume-control,.name-form{width:min(100%,920px);margin-inline:auto}.table-menu{grid-template-columns:repeat(2,1fr);gap:20px 26px}.language-menu,.menu-list{gap:18px}.main-menu-logo,.language-logo{border-radius:30px;width:min(46vw,460px);margin-bottom:42px}.main-menu-logo{width:min(52vw,570px);margin-bottom:30px}.platform-back-button,.options-button,.safe-pill{border-radius:20px;min-height:64px;padding-inline:28px;font-size:1.45rem}.options-button{min-width:150px;margin-bottom:18px}.safe-pill{min-width:320px;margin-bottom:54px}.selected-operation-card{border-radius:34px;gap:32px;width:min(100%,720px);min-height:168px;margin-bottom:56px;padding:32px 42px}.selected-operation-icon{width:116px;height:116px;box-shadow:0 0 0 14px var(--operation-soft,#f3e8ff);border-radius:30px;font-size:4.2rem}.selected-operation-copy strong{font-size:2.65rem}.selected-operation-copy span{font-size:1.35rem}h1{font-size:4.45rem}.screen-subtitle{margin:18px 0 66px;font-size:1.7rem}.volume-control{border-radius:24px;gap:20px;margin-bottom:28px;padding:28px 26px}.volume-control label,.volume-control button,.language-button,.name-form input,.name-form button{font-size:1.55rem}.volume-control button,.language-button,.name-form input,.name-form button{border-radius:22px;min-height:82px}.volume-control input{min-height:26px}.name-form{gap:20px}.menu-card,.notification-button,.history-button,.support-button,.remove-ads-button,.final-marathon-button,.mixed-button,.reinforcement-button{border-radius:18px;min-height:82px;font-size:1.35rem}.menu-card{justify-content:center;padding:18px 28px}.menu-card strong{font-size:1.58rem}.menu-icon{width:58px;height:58px;font-size:1.55rem}.streak-card{min-width:490px;margin-bottom:42px;padding:18px 28px;font-size:1.55rem}.table-card{border-radius:22px;min-height:168px;font-size:3.4rem}.review-list{gap:14px;width:min(100%,1100px)}.review-row{border-radius:20px;min-height:84px;font-size:1.75rem}.review-row strong{font-size:1.9rem}.review-screen .mixed-button,#reviewScreen .mixed-button{width:min(100%,1100px);min-height:86px;margin-inline:auto}.back-button{border-radius:999px;min-width:150px;height:76px;padding:0 30px;font-size:1.65rem;top:74px;left:max(70px,50vw - 530px)}#operationScreen{padding-top:0;position:relative}#operationScreen .operation-top-actions{margin-bottom:0}#operationScreen .fullscreen-button{display:none!important}#operationScreen .main-menu-logo{width:min(42vw,430px);margin:18px auto 24px}#operationScreen .streak-card{min-width:430px;margin-bottom:26px;padding:14px 24px;font-size:1.35rem}#operationScreen h1{max-width:760px;margin-inline:auto;font-size:3.35rem}#operationScreen .screen-subtitle{margin:12px 0 34px;font-size:1.38rem}#operationScreen .menu-list{gap:8px;margin-bottom:10px}#operationScreen .menu-card,#operationScreen .notification-button,#operationScreen .history-button,#operationScreen .support-button,#operationScreen .remove-ads-button,#operationScreen .final-marathon-button,#operationScreen .mixed-button,#operationScreen .reinforcement-button{border-radius:16px;min-height:60px;font-size:1.18rem}#operationScreen .menu-card strong{font-size:1.35rem}#operationScreen .menu-icon,#operationScreen .support-button span{width:46px;height:46px;font-size:1.28rem}#operationScreen .history-button,#operationScreen .support-button,#operationScreen .final-marathon-button,#operationScreen .mixed-button{margin-bottom:7px}#operationScreen .operation-top-actions .history-button,#operationScreen .operation-top-actions .options-button{border-radius:999px;min-height:68px;margin-bottom:0;font-size:1.18rem}}@media (width>=790px) and (height<=1320px) and (orientation:portrait){.confirm-dialog{border-radius:34px;width:min(100%,660px);padding:42px}.confirm-dialog h2{margin-bottom:22px;font-size:2.45rem}.confirm-dialog p{max-width:540px;margin:0 auto 34px;font-size:1.42rem;line-height:1.45}.confirm-dialog button{border-radius:22px;min-height:82px;font-size:1.45rem}.lesson-screen{min-height:calc(100vh - 36px)}.lesson-top{gap:16px;margin-bottom:16px}.combo-pill{min-height:92px;padding:18px 24px}.combo-pill span{font-size:1.25rem}.combo-pill strong{font-size:2.35rem}.lesson-progress{margin-bottom:22px;padding:18px 22px;font-size:1.35rem}.lesson-progress-track{height:20px}.question-panel{border-radius:40px;padding:54px 56px 52px}.equation{margin-bottom:44px;font-size:4.25rem}.answer-display{border-radius:24px;min-height:144px;font-size:2.8rem}.keypad{gap:16px 22px;width:min(100%,790px);margin-top:30px}.keypad button{border-radius:24px;min-height:104px;font-size:2.85rem}.lesson-ad-slot{border-radius:4px;width:min(100%,790px);min-height:100px;margin-top:22px;font-size:1.05rem}}.table-card{overflow:visible}.table-medal-img{z-index:2;width:clamp(40px,8vw,48px);top:-15px;right:16px}.table-card.mastered .table-card-main{transform:translateY(-5px)}.native-app #tableScreen .table-medal-img{width:42px;top:-15px;right:14px}#reviewScreen{justify-content:flex-start;min-height:min(100dvh,100vh);padding-top:clamp(10px,2.4vh,28px)}body.review-active .app-shell{min-height:100dvh;padding-top:0;padding-bottom:0}body.review-active{overflow:hidden}#reviewScreen .back-button{min-width:clamp(78px,10vw,116px);height:auto;min-height:clamp(38px,5.2vh,54px);padding:0 clamp(14px,2.2vw,22px);font-size:clamp(.9rem,2.5vw,1.12rem)}#reviewScreen .safe-pill{min-width:0;min-height:clamp(34px,5vh,46px);margin-bottom:clamp(8px,1.8vh,16px);padding:clamp(7px,1.3vh,10px) clamp(18px,3vw,24px);font-size:clamp(.78rem,2.5vw,.92rem)}#reviewScreen h1{font-size:clamp(2.05rem,6.2vw,2.75rem);line-height:.98}#reviewScreen .screen-subtitle{margin:clamp(5px,1vh,8px) 0 clamp(10px,2vh,18px);font-size:clamp(.88rem,2.9vw,1.06rem);line-height:1.14}#reviewScreen .review-list{gap:clamp(7px,1.2vh,10px);width:min(100%,540px);margin-bottom:clamp(6px,1.2vh,10px)}#reviewScreen .review-row{border-radius:clamp(12px,2vw,16px);min-height:clamp(42px,6.65vh,58px);padding:clamp(6px,1.15vh,10px) clamp(12px,2vw,16px);font-size:clamp(1rem,3.15vw,1.24rem)}#reviewScreen .review-row strong{font-size:clamp(1.08rem,3.55vw,1.36rem)}#reviewScreen .mixed-button{border-radius:clamp(13px,2vw,16px);width:min(100%,540px);min-height:clamp(44px,6.6vh,54px);margin-inline:auto;font-size:clamp(1rem,3.2vw,1.22rem)}@media (width>=700px){#reviewScreen .review-list,#reviewScreen .mixed-button{width:min(100%,560px)}#reviewScreen .review-row{min-height:clamp(46px,6.2vh,66px);font-size:clamp(1.08rem,1.5vw,1.36rem)}#reviewScreen .review-row strong{font-size:clamp(1.18rem,1.7vw,1.5rem)}}@media (width<=430px){#reviewScreen{padding-top:max(8px, env(safe-area-inset-top,0px))}#reviewScreen h1{font-size:clamp(1.9rem,8.3vw,2.28rem)}#reviewScreen .review-list{gap:clamp(6px,.95vh,8px)}#reviewScreen .review-row{min-height:clamp(39px,5.95vh,50px)}}