@import"https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap";:root{font-family:Nunito,sans-serif;color:#253052;background:#fffaf2;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button,a{cursor:pointer}a{color:inherit;text-decoration:none}header{height:78px;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1120px)/2));background:#fff;border-bottom:1px solid #f2eadf}.brand{color:#6357d8;font-size:1.35rem;font-weight:800}.parent-chip{color:#68708f}.parent-chip button{margin-left:14px;border:0;background:transparent;color:#6357d8}main{max-width:1120px;margin:auto;padding:48px 24px}.hero{display:flex;justify-content:space-between;align-items:center;background:#e9e7ff;border-radius:28px;padding:42px 48px}h1{font-size:clamp(2rem,4vw,3.4rem);line-height:1.05;margin:12px 0}h2{margin:0}.hero 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auto}.learning-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px}.learning-card{border-radius:24px;padding:28px;background:#fff;border:2px solid #f1eadf}.learning-card p{color:#777b92;min-height:48px}.learning-card .primary{margin-top:16px}.learning-icon{font-size:3rem}.empty-page{text-align:center;padding:80px 20px}@media(max-width:620px){header{padding:0 16px}.parent-chip{font-size:.8rem}main{padding:24px 16px}.hero{padding:28px}.hero-art{font-size:4rem}.auth-card,.form-card{margin:2vh auto;padding:28px 22px}.child-welcome{align-items:flex-start;flex-direction:column}.learning-grid{grid-template-columns:1fr}}.header-left{display:flex;align-items:center;gap:24px}.header-guide{color:#6357d8;font-weight:800;padding:8px 12px;border-radius:12px;background:#efedff}.header-guide:hover{background:#e2dfff}@media(max-width:620px){.header-left{gap:8px}.header-guide{padding:7px 8px;font-size:.8rem}}.admin-page{max-width:1180px;margin:0 auto;padding:42px 28px 64px}.admin-topbar{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px}.admin-topbar h1{margin:8px 0 6px;font-size:2.6rem}.admin-topbar p,.admin-panel p{margin:0;color:#7b8098}.admin-actions{display:flex;gap:12px;align-items:center}.date-picker{display:flex;align-items:center;gap:8px;margin:0;padding:11px 14px;background:#fff;border:2px solid #eeeaf5;border-radius:13px;color:#6357d8}.date-picker input{border:0;padding:0;color:#525878}.admin-actions .secondary{width:auto}.admin-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.admin-kpi{display:flex;align-items:flex-start;gap:14px;padding:22px 18px;border-radius:20px;border:1px solid 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0}.settings-milestone-list{gap:10px}.milestone-summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border:1px solid #eee5d5;border-radius:14px;background:#fffaf2;color:#777b92}.edit-milestone{flex:0 0 auto;border:0;border-radius:10px;padding:8px 10px;background:#efedff;color:#6357d8;font-weight:800}.edit-milestone:hover{background:#e2dfff}.milestone-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px}.milestone-actions .secondary{width:auto;margin-top:0;padding:8px 14px}.add-milestone{width:100%;margin:8px 0}.remove-milestone{border:0;background:transparent;color:#c45b5b;font-weight:800}.milestone-list{display:grid;gap:8px;margin-top:18px;color:#777b92;font-weight:700}.milestone-list .milestone-done{color:#24965a}.auth-switch{margin-top:20px;color:#777b92}.auth-switch a{color:#6357d8;font-weight:800}.guide-auth-link{display:inline-block;margin-top:14px;padding:10px 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p{max-width:600px;color:#686c86;font-size:1.25rem;line-height:1.65}.landing-actions{display:flex;align-items:center;gap:18px;margin-top:30px}.landing-primary{display:inline-block;width:auto;padding:16px 24px}.landing-outline{padding:15px 4px;color:#6357d8;font-weight:800}.landing-hero-art{position:relative;min-height:430px;display:grid;place-items:center;border-radius:40% 60% 55% 45%;background:#e9e7ff}.landing-mascot{font-size:11rem;filter:drop-shadow(0 16px 0 #d9d4ff)}.floating-card{position:absolute;display:grid;gap:4px;padding:16px 20px;border-radius:18px;background:#fff;box-shadow:0 12px 28px #5148a126;color:#6357d8;font-size:2rem;font-weight:800}.floating-card span{font-size:.95rem;color:#253052}.card-one{top:56px;left:-24px;transform:rotate(-6deg)}.card-two{right:-18px;bottom:62px;transform:rotate(6deg)}.landing-section-heading{text-align:center}.landing-section-heading h2{margin:10px 0 24px;font-size:clamp(2rem,4vw,3rem)}.landing-features{padding-top:40px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-grid article{padding:28px;border:2px solid #f1eadf;border-radius:24px;background:#fff}.feature-grid article>span{font-size:2.8rem}.feature-grid h3{margin:14px 0 8px;font-size:1.35rem}.feature-grid p,.landing-subject p{margin:0;color:#777b92;line-height:1.6}.landing-subjects{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:70px}.landing-subject{display:flex;align-items:center;gap:22px;padding:30px;border-radius:26px}.landing-subject>span{font-size:4rem}.landing-subject h2{margin:0 0 8px}.math-subject{background:#fff4d9}.english-subject{background:#e9e7ff}.landing-final{margin-top:70px;padding:48px 24px;border-radius:30px;background:#6357d8;color:#fff;text-align:center}.landing-final h2{margin:0 0 12px;font-size:clamp(2rem,4vw,3rem)}.landing-final p{color:#efedff}.landing-final .landing-primary{margin-top:12px;background:#fff;color:#6357d8}.landing-footer{padding:24px;color:#777b92;text-align:center}@media(max-width:720px){.landing-header{padding:18px 16px}.landing-header nav{gap:10px;font-size:.85rem}.landing-header nav>a:first-child{display:none}.landing-main{padding:0 16px 40px}.landing-hero{grid-template-columns:1fr;min-height:0;padding:52px 0 30px;text-align:center}.landing-hero-copy h1,.landing-hero-copy p{margin-left:auto;margin-right:auto}.landing-actions{justify-content:center;flex-wrap:wrap}.landing-hero-art{min-height:290px;margin:18px 20px 0}.landing-mascot{font-size:7rem}.floating-card{padding:10px 14px;font-size:1.5rem}.floating-card span{font-size:.72rem}.card-one{top:30px;left:-12px}.card-two{right:-12px;bottom:30px}.feature-grid,.landing-subjects{grid-template-columns:1fr}.landing-subjects{margin-top:48px}}.guide-page{max-width:1000px;margin:0 auto;padding:24px 0 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p{margin:0}.guide-columns{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:48px}.guide-topic{padding:30px;border-radius:24px;background:#fff;border:2px solid #f1eadf}.guide-topic h2{color:#6357d8;margin:10px 0}.guide-topic ul{padding-left:22px;margin-bottom:0}.reward-guide{padding:28px;border-radius:24px;background:#fff4d9}.reward-examples{display:flex;flex-wrap:wrap;gap:12px}.reward-examples span{padding:12px 16px;border-radius:14px;background:#fff;color:#6357d8;font-weight:800}.guide-help{margin-top:48px;padding:36px;border-radius:24px;background:#6357d8;color:#fff;text-align:center}.guide-help h2{margin-top:0}.guide-help p{color:#efedff}.guide-cta{display:inline-block;width:auto;margin-top:12px;background:#fff;color:#6357d8}@media(max-width:620px){.guide-page{padding:16px 0 40px}.guide-hero{padding:36px 20px}.guide-steps,.guide-columns{grid-template-columns:1fr}.guide-step,.guide-topic,.reward-guide,.guide-help{padding:22px}.reward-examples{display:grid}}.lesson-card.has-next{padding-bottom:120px}.lesson-card>h1{font-size:clamp(2.8rem,6vw,5rem);line-height:1.12;margin:28px auto 16px;max-width:760px}.lesson-progress{color:#6357d8;font-weight:800;margin:28px 0 12px}.lesson-hint{color:#777b92}.answer-grid{display:grid;grid-template-columns:repeat(3,minmax(150px,1fr));gap:24px;margin:40px auto 0;max-width:760px}.answer-button{min-height:128px;border:3px solid #e8e3da;background:#fffaf2;color:#253052;border-radius:24px;padding:28px;font-size:clamp(2.8rem,6vw,4.5rem);font-weight:800;box-shadow:0 5px #e8e3da}.answer-button:hover{border-color:#8179e4;transform:translateY(-2px)}.answer-button:disabled{cursor:default}.answer-button.correct{background:#d9f7e7;border-color:#42bd78}.answer-button.wrong{background:#ffe0e0;border-color:#dc7373}.answer-grid.two-options{grid-template-columns:repeat(2,minmax(190px,1fr));max-width:560px}.feedback-correct{animation:celebrate-pop .45s ease-out}.feedback-wrong{animation:gentle-shake .45s ease-in-out}.feedback-message{margin-top:24px;font-size:1.2rem;font-weight:800}.feedback-message.correct{color:#24965a}.feedback-message.wrong{color:#c45b5b}.next-button{max-width:320px;margin:24px auto 0}.next-button{position:fixed;top:50%;right:max(18px,env(safe-area-inset-right));z-index:20;width:64px;height:64px;padding:0;margin:0;border-radius:50%;font-size:2rem;line-height:1;transform:translateY(-50%);box-shadow:0 8px 24px #5148a155}.next-button:hover{transform:translateY(calc(-50% - 2px))}.feedback-message-area{min-height:52px}.answer-celebration{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:grid;place-content:center;justify-items:center;gap:4px;pointer-events:none;background:radial-gradient(circle at center,#fff9 0 10%,#d9f7e799 35%,transparent 70%);animation:celebration-screen 1.5s ease-out both}.celebration-rays{color:#f2b52b;font-size:clamp(2rem,7vw,5rem);letter-spacing:.25em;animation:celebration-rays 1.1s ease-out both}.celebration-star{font-size:clamp(5rem,16vw,10rem);line-height:1;filter:drop-shadow(0 10px 0 #f5d56a);animation:celebration-star .8s cubic-bezier(.2,1.6,.4,1) both}.answer-celebration strong{color:#24965a;font-size:clamp(2rem,6vw,4.5rem)}.answer-celebration span{color:#6357d8;font-size:clamp(1.2rem,3vw,2rem);font-weight:800}.answer-wrong-effect{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:grid;place-content:center;justify-items:center;gap:6px;pointer-events:none;background:radial-gradient(circle at center,#fff9 0 10%,#ffe0e099 35%,transparent 70%);animation:wrong-screen 1.2s ease-out both}.wrong-icon{color:#dc7373;font-size:clamp(4rem,13vw,8rem);line-height:1;animation:wrong-icon .65s ease-in-out both}.answer-wrong-effect strong{color:#c45b5b;font-size:clamp(1.8rem,5vw,3.5rem)}.answer-wrong-effect span{color:#6357d8;font-size:clamp(1.1rem,3vw,1.8rem);font-weight:800}@keyframes celebration-screen{0%{opacity:0;transform:scale(.96)}25%{opacity:1;transform:scale(1)}80%{opacity:1}to{opacity:0}}@keyframes celebration-star{0%{transform:scale(.2) rotate(-25deg);opacity:0}55%{transform:scale(1.12) rotate(8deg);opacity:1}to{transform:scale(1) rotate(0);opacity:1}}@keyframes celebration-rays{0%{transform:scale(.4) rotate(-12deg);opacity:0}60%{transform:scale(1.1) rotate(5deg);opacity:1}to{transform:scale(1);opacity:1}}@keyframes wrong-screen{0%{opacity:0;transform:scale(.98)}18%{opacity:1;transform:scale(1)}75%{opacity:1}to{opacity:0}}@keyframes wrong-icon{0%,to{transform:translate(0) rotate(0)}20%{transform:translate(-12px) rotate(-8deg)}40%{transform:translate(12px) rotate(8deg)}60%{transform:translate(-8px) rotate(-5deg)}80%{transform:translate(5px) rotate(3deg)}}.math-input-area{max-width:560px;margin:30px auto 0}.number-keyboard{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-top:22px}.number-keyboard button{min-height:68px;border:2px solid #e8e3da;border-radius:16px;background:#fff;color:#253052;font-size:2rem;font-weight:800;box-shadow:0 3px #e8e3da}.number-keyboard button:hover{background:#efedff;border-color:#8179e4}.celebration{position:relative;overflow:hidden}.confetti{font-size:2rem;letter-spacing:.5rem;animation:confetti-drop .8s ease-out}@keyframes celebrate-pop{0%{transform:scale(1)}50%{transform:scale(1.025)}to{transform:scale(1)}}@keyframes gentle-shake{0%,to{transform:translate(0)}25%{transform:translate(-7px)}75%{transform:translate(7px)}}@keyframes confetti-drop{0%{transform:translateY(-22px);opacity:0}to{transform:translateY(0);opacity:1}}.result-icon{font-size:5rem}.result-card .learning-button{margin-top:24px}.game-page-card{max-width:620px;margin:0 auto;padding:48px 32px;border-radius:28px;background:#fff;box-shadow:0 12px 40px #5148a114;text-align:center}.game-result-icon{font-size:6rem;animation:celebration-star .8s cubic-bezier(.2,1.6,.4,1) both}.game-page{max-width:1120px;margin:0 auto;padding-bottom:36px}.game-topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}.game-topbar>strong{color:#6357d8;font-size:1.35rem}.game-back{border:0;border-radius:12px;padding:9px 12px;background:#fff;color:#6357d8;font-weight:900}.game-stats{display:flex;gap:8px;color:#6357d8;font-weight:900}.game-stats span{padding:9px 12px;border-radius:999px;background:#fff;box-shadow:0 4px 12px #5148a112}.game-hero{position:relative;min-height:350px;overflow:hidden;padding:34px 24px 112px;border-radius:30px;background:linear-gradient(180deg,#8ee5fa,#d9f7ed);text-align:center;box-shadow:0 14px 35px #4a71a122}.game-hero h1{position:relative;z-index:2;max-width:680px;margin:9px auto 0;color:#253052;font-size:clamp(2.1rem,5vw,3.8rem);line-height:1.08}.game-hero p{position:relative;z-index:2;max-width:620px;margin:18px auto 0;color:#536280;font-weight:800;line-height:1.45}.game-sun{position:absolute;top:24px;right:10%;font-size:4rem;filter:drop-shadow(0 0 16px #fff1a3)}.game-cloud{position:absolute;color:#fff;font-size:3rem;opacity:.8;animation:cloud-drift 10s ease-in-out infinite alternate}.game-cloud.cloud-a{top:30px;left:10%}.game-cloud.cloud-b{top:95px;right:24%;font-size:2.2rem;animation-delay:-3s}.game-treasure{position:absolute;z-index:1;right:0;bottom:-9px;left:0;color:#4b9e67;font-size:4.5rem;letter-spacing:1rem;white-space:nowrap}.game-route{margin-top:22px;padding:26px;border:2px solid #e6e1ff;border-radius:26px;background:linear-gradient(135deg,#f5f3ff,#fff)}.game-route-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.game-route-heading h2{margin:7px 0 0;color:#253052}.game-route-heading>strong{color:#6357d8;font-size:1.5rem}.game-progress{height:12px;margin:18px 0 24px;overflow:hidden;border-radius:99px;background:#e3e0f8}.game-progress span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#e56c9a,#f1ba4c,#59bd80,#6357d8);transition:width .35s ease}.game-route-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}.game-node{display:flex;align-items:center;gap:8px;min-height:64px;padding:9px;border:3px solid transparent;border-radius:17px;background:#f7f6ff;color:#777b92;font-weight:900;transition:transform .2s,border-color .2s}.game-node:nth-child(2n){transform:translateY(10px)}.game-node span{display:grid;place-items:center;flex:0 0 auto;width:35px;height:35px;border-radius:50%;background:#fff;font-size:1.15rem}.game-node small{line-height:1.2}.game-node.active{border-color:#6357d8;color:#6357d8;box-shadow:0 5px #d9d4ff;transform:translateY(-3px)}.game-node:nth-child(2n).active{transform:translateY(7px)}.game-node.done{color:#24965a;background:#e4f9ed}.game-node.done span{background:#d9f7e7}.game-node.locked{opacity:.58}.game-node.theme-blue{background:#e7f6ff}.game-node.theme-green{background:#e4f9ed}.game-node.theme-orange{background:#fff0df}.game-node.theme-yellow{background:#fff5d6}.game-node.theme-pink{background:#fff0f5}.game-node.theme-teal{background:#e4fbfa}.game-node.theme-red{background:#fff0f0}.game-question-card{position:relative;margin-top:22px;padding:38px 28px;overflow:hidden;border-radius:28px;background:#fff;text-align:center;box-shadow:0 12px 40px #5148a114}.game-question-card.math{border-top:8px solid #8179e4}.game-question-card.english{border-top:8px solid #f1ad59}.game-question-label{display:inline-block;padding:9px 14px;border-radius:999px;background:#efedff;color:#6357d8;font-weight:900}.game-question-card.english .game-question-label{background:#fff2da;color:#ba7220}.game-question-art{position:relative;z-index:1;width:116px;height:116px;display:grid;place-items:center;overflow:hidden;margin:20px auto 8px;border-radius:40% 60% 55% 45%;background:radial-gradient(circle at 35% 25%,#fff 0,#fff 8%,#fff4d9 9%,#fff4d9 35%,#e3defe 70%);filter:drop-shadow(0 8px 0 #d8d1f6);animation:illustration-bob 2s ease-in-out infinite}.game-art-main{font-size:4.2rem;line-height:1}.game-art-extra{position:absolute;right:8px;bottom:8px;font-size:2rem;line-height:1;filter:drop-shadow(0 3px 0 #c9b9df)}.game-speak-button{position:relative;z-index:2;border:2px solid #f2c574;border-radius:14px;padding:9px 15px;background:#fff5df;color:#a8651c;font-weight:900}.game-speak-button:hover{background:#ffebba;transform:translateY(-2px)}.game-question-card h2{position:relative;z-index:2;max-width:760px;margin:24px auto;font-size:clamp(1.6rem,4vw,2.5rem);line-height:1.18}.game-answer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,260px));justify-content:center;gap:14px}.game-answer{min-height:70px;border:3px solid #e7e4dc;border-radius:20px;background:#fffaf2;color:#253052;font-size:1.5rem;font-weight:900;box-shadow:0 5px #e7e4dc;transition:transform .15s,border-color .15s}.game-answer:hover:not(:disabled){transform:translateY(-3px);border-color:#8179e4}.game-answer:disabled{cursor:default;opacity:.8}.game-feedback{min-height:28px;margin:18px 0 0;font-weight:900}.game-feedback.correct{color:#24965a}.game-feedback.wrong{color:#c45b5b;animation:gentle-shake .4s ease-in-out}.game-next{width:auto;margin-top:16px}.game-celebration{position:absolute;top:0;right:0;bottom:0;left:0;z-index:3;display:grid;place-content:center;justify-items:center;gap:2px;pointer-events:none;background:radial-gradient(circle,#fff9 0 12%,#d9f7e799 42%,transparent 72%);color:#24965a;font-size:5rem;animation:celebration-screen 1.5s ease-out both}.game-celebration strong{font-size:2.5rem}.game-celebration span{color:#6357d8;font-size:1.25rem;font-weight:900}.game-launch-card{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;margin-top:24px;padding:22px 24px;border-radius:24px;background:linear-gradient(110deg,#e9e7ff,#fff4d9)}.game-launch-art{font-size:2.2rem;white-space:nowrap}.game-launch-card h2{margin:4px 0;color:#6357d8}.game-launch-card p{margin:0;color:#777b92;font-weight:700}.game-launch-button{width:auto;white-space:nowrap}.child-achievement{display:inline-block;margin-top:10px;padding:6px 9px;border-radius:999px;background:#fff4d9;color:#a8651c!important;font-size:.78rem!important;font-weight:900}.achievement-dashboard{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:center;margin-top:28px;padding:28px;border-radius:24px;background:linear-gradient(110deg,#fff4d9,#efedff)}.achievement-dashboard h2{margin:8px 0;color:#6357d8}.achievement-dashboard p{margin:0;color:#777b92;font-weight:700}.achievement-list{display:grid;gap:10px}.achievement-list article{display:flex;align-items:center;gap:12px;padding:13px;border-radius:16px;background:#ffffffc9}.achievement-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:#fff;font-size:1.5rem}.achievement-list article div{display:grid;gap:4px}.achievement-list small{color:#777b92}.flashcard-page{background:transparent;box-shadow:none}.flashcard{background:#fff;border:3px solid #f1eadf;border-radius:32px;padding:56px 48px;margin:28px auto;max-width:700px;min-height:500px;display:flex;flex-direction:column;align-items:center;justify-content:center}.flash-emoji{font-size:clamp(7rem,16vw,11rem);line-height:1;margin-bottom:24px}.flashcard h1{font-size:clamp(4rem,10vw,7rem);line-height:1;margin:12px 0 32px;color:#6357d8}.sound-button{border:3px solid #cfc8ff;border-radius:20px;padding:18px 30px;background:#efedff;color:#6357d8;font-size:1.35rem;font-weight:800;box-shadow:0 5px #d9d4ff}.sound-button:hover{transform:translateY(-2px);background:#e6e2ff}.word-detail{width:100%;margin-top:32px;padding:24px;border-radius:20px;background:#fff4d9}.word-detail h2{color:#6357d8;font-size:2rem}.word-detail p{font-size:1.35rem;margin-bottom:0}.reveal-button{margin-top:28px;padding:18px 32px;font-size:1.25rem;border-radius:18px}.english-prompt{padding:16px 0 8px}.question-image-wrap{width:min(100%,480px);height:240px;margin:0 auto 24px;border-radius:24px;overflow:hidden;background:#fff4d9;display:grid;place-items:center;position:relative}.question-image{width:100%;height:100%;object-fit:cover;position:relative;z-index:1}.image-fallback{position:absolute;font-size:5rem;z-index:0}.english-prompt .learning-icon{display:block;font-size:4rem}.english-prompt h1{margin:18px 0;font-size:clamp(2rem,5vw,3.5rem)}.large-sound{min-width:220px}.word-meaning{color:#5f647d;font-size:clamp(1.45rem,3vw,2rem);line-height:1.4;font-weight:800;margin:24px 0 0}.english-options{display:grid;grid-template-columns:repeat(2,minmax(180px,1fr));gap:20px;max-width:680px;margin:30px auto 0}.english-option{min-height:90px;border:3px solid #e8e3da;border-radius:20px;background:#fffaf2;color:#253052;font-size:2rem;font-weight:800}.english-option:hover{border-color:#8179e4;transform:translateY(-2px)}.english-option.correct{background:#d9f7e7;border-color:#42bd78}.english-options.two-options{max-width:560px}.writing-area{max-width:680px;margin:30px auto 0}.typed-word{min-height:84px;display:grid;place-items:center;border:3px dashed #cfc8ff;border-radius:20px;background:#faf9ff;color:#6357d8;font-size:3rem;font-weight:800;letter-spacing:.18em}.typed-word span{color:#9693ae;font-size:1rem;letter-spacing:normal}.letter-keyboard{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:22px}.letter-keyboard button{min-height:64px;border:2px solid #e8e3da;border-radius:16px;background:#fff;color:#253052;font-size:1.8rem;font-weight:800;text-transform:uppercase;box-shadow:0 3px #e8e3da}.letter-keyboard button:hover{background:#efedff;border-color:#8179e4}.writing-actions{display:grid;grid-template-columns:1fr 1.5fr;gap:14px;margin-top:20px}.writing-actions button{min-height:58px;font-size:1.1rem}.flashcard-page>.learning-button{max-width:700px;margin:0 auto;padding:18px 28px;font-size:1.3rem;border-radius:18px}.lesson-timer{position:absolute;top:22px;right:32px;z-index:5;padding:9px 14px;border:2px solid #d9d4ff;border-radius:999px;background:#efedff;color:#6357d8;font-size:1rem;font-weight:900;letter-spacing:.04em;box-shadow:0 3px #d9d4ff}.lesson-timer.urgent{border-color:#f0b2b2;background:#fff0f0;color:#c45b5b;box-shadow:0 3px #f0b2b2;animation:timer-pulse 1s ease-in-out infinite}.exit-confirm-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;display:grid;place-items:center;padding:20px;background:#25305299}.exit-confirm{width:min(440px,100%);padding:32px;border-radius:24px;background:#fff;text-align:center;box-shadow:0 18px 50px #25305255}.exit-confirm-icon{font-size:3rem}.exit-confirm h2{margin:12px 0 8px;color:#253052;font-size:1.7rem}.exit-confirm p{margin:0;color:#777b92;line-height:1.5}.exit-confirm>div:last-child{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}.exit-confirm>div:last-child button{width:100%;min-height:50px}.exit-confirm>div:last-child .primary{background:#c45b5b}@keyframes timer-pulse{50%{transform:scale(1.04)}}@media(max-width:620px){.answer-grid{grid-template-columns:1fr;gap:16px;margin-top:28px}.answer-grid.two-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.answer-button{min-height:86px;padding:16px}.lesson-card{padding:28px 16px}.lesson-card.has-next{padding-bottom:112px}.lesson-card>h1{font-size:2.6rem}.flashcard{min-height:440px;padding:36px 20px}.flashcard h1{font-size:4.5rem}.flash-emoji{font-size:7rem}.sound-button{width:100%;font-size:1.1rem}.english-options{grid-template-columns:1fr;gap:14px}.english-options.two-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.english-option{min-height:76px;padding:10px;font-size:1.5rem}.letter-keyboard{grid-template-columns:repeat(4,1fr);gap:9px}.letter-keyboard button{min-height:56px}.typed-word{font-size:2.3rem}.word-meaning{font-size:1.5rem}.number-keyboard{gap:9px}.number-keyboard button{min-height:58px}}@media(max-width:620px){.child-stats{gap:8px}.child-stats article{padding:14px 8px}.child-stats strong{font-size:1.25rem}.child-stats span{font-size:.8rem}.reward-panel{grid-template-columns:1fr;padding:20px}}@media(max-width:620px){.next-button{right:10px;width:54px;height:54px;font-size:1.65rem}}@media(min-width:621px)and (max-width:1024px){.lesson-mode main{padding:10px}.lesson-mode .lesson-card{min-height:calc(100vh - 20px);padding:58px 86px 32px 28px}.lesson-mode .lesson-card>.back-link{top:18px;left:24px}.lesson-mode .lesson-card>h1{margin:18px auto 10px;font-size:clamp(2.4rem,5vw,4rem)}.lesson-mode .lesson-progress{margin:12px 0 8px}.lesson-mode .answer-grid{gap:14px;margin-top:24px}.lesson-mode .answer-button{min-height:96px;padding:18px}.lesson-mode .question-image-wrap{height:170px;margin-bottom:12px}.lesson-mode .english-prompt{padding:0}.lesson-mode .english-prompt h1{margin:10px 0;font-size:clamp(2rem,4vw,3rem)}.lesson-mode .word-meaning{margin-top:10px;font-size:1.25rem}.lesson-mode .english-options,.lesson-mode .writing-area,.lesson-mode .math-input-area{margin-top:18px}.lesson-mode .letter-keyboard{gap:8px;margin-top:14px}.lesson-mode .letter-keyboard button,.lesson-mode .number-keyboard button{min-height:54px}}@media(max-width:620px){.path-list{grid-template-columns:1fr}.learning-path{padding:20px 14px}.path-heading h2{font-size:1.35rem}.path-heading p{font-size:.9rem}.path-step{min-height:72px;padding:10px}.path-node{width:40px;height:40px;font-size:1.25rem}.path-copy strong{font-size:.92rem}.path-copy small{font-size:.78rem}.path-arrow{font-size:.7rem}}@media(max-width:620px){.lesson-mode main{padding:0}.lesson-mode .lesson-card{min-height:100svh;padding:54px 70px 88px 12px;border-radius:0;box-shadow:none}.lesson-mode .lesson-card.has-next{padding-bottom:96px}.lesson-mode .lesson-card>.back-link{top:14px;left:14px;font-size:.9rem}.lesson-mode .lesson-progress{margin:10px 0 4px;font-size:.95rem}.lesson-mode .lesson-card>h1{margin:12px auto 8px;font-size:clamp(2rem,9vw,2.8rem)}.lesson-mode .lesson-hint{margin:8px 0;font-size:.9rem}.lesson-mode .answer-grid{gap:10px;margin-top:18px}.lesson-mode .answer-button{min-height:72px;padding:10px 6px;border-radius:16px;font-size:clamp(2rem,10vw,3rem)}.lesson-mode .math-input-area{margin-top:16px}.lesson-mode .typed-word{min-height:58px;font-size:2rem}.lesson-mode .number-keyboard{gap:7px;margin-top:12px}.lesson-mode .number-keyboard button{min-height:50px;font-size:1.5rem;border-radius:12px}.lesson-mode .writing-actions{gap:8px;margin-top:12px}.lesson-mode .writing-actions button{min-height:48px;padding:8px;font-size:.95rem}.lesson-mode .question-image-wrap{width:min(100%,260px);height:128px;margin-bottom:10px;border-radius:16px}.lesson-mode .english-prompt{padding:0}.lesson-mode .english-prompt h1{margin:8px 0;font-size:clamp(1.6rem,7vw,2.3rem)}.lesson-mode .large-sound{min-width:0;padding:10px 14px;font-size:.95rem}.lesson-mode .word-meaning{margin:8px 0 0;font-size:1rem}.lesson-mode .english-options{gap:10px;margin-top:18px}.lesson-mode .english-option{min-height:62px;padding:8px 5px;border-radius:14px;font-size:1.25rem}.lesson-mode .writing-area{margin-top:16px}.lesson-mode .letter-keyboard{gap:7px;margin-top:12px}.lesson-mode .letter-keyboard button{min-height:48px;border-radius:11px;font-size:1.35rem}.lesson-mode .feedback-message{margin-top:14px;font-size:1rem}.lesson-mode .answer-celebration,.lesson-mode .answer-wrong-effect{padding:16px}.lesson-mode .lesson-timer{top:12px;right:12px;padding:7px 9px;font-size:.85rem}.exit-confirm{padding:24px 18px}.exit-confirm h2{font-size:1.4rem}}@media(max-width:620px){.game-page{padding-bottom:18px}.game-topbar{gap:7px}.game-topbar>strong{font-size:1rem}.game-back{padding:7px 8px;font-size:.8rem}.game-stats{gap:4px;font-size:.78rem}.game-stats span{padding:7px 8px}.game-hero{min-height:300px;padding:28px 14px 96px;border-radius:22px}.game-hero h1{max-width:340px;font-size:2rem;line-height:1.1}.game-hero p{max-width:320px;margin-top:14px;font-size:.95rem}.game-sun{top:12px;right:7%;font-size:2.6rem}.game-cloud{font-size:2.2rem}.game-treasure{font-size:3rem;letter-spacing:.35rem}.game-route{padding:18px 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#eeeaf5;border-radius:22px;background:#fff;box-shadow:0 8px 24px #5148a108}.difficulty-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:13px}.difficulty-heading>strong{font-size:.95rem;color:#555d79}.difficulty-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.difficulty-option{position:relative;display:flex;align-items:center;gap:10px;min-height:68px;padding:11px 13px;border:2px solid transparent;border-radius:16px;text-align:left;color:#3b4563;touch-action:manipulation;transition:transform .15s,border-color .15s}.difficulty-option:hover{transform:translateY(-2px)}.difficulty-option.easy{background:#eaf8ed;border-color:#d9f0df}.difficulty-option.medium{background:#fff6db;border-color:#f5ebc8}.difficulty-option.hard{background:#fff0e7;border-color:#f8e1d3}.difficulty-option.expert{background:#f0edff;border-color:#e3defc}.difficulty-option.selected{border-color:#7563dc;box-shadow:0 0 0 2px 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#eeeaf8;border-radius:18px;background:#fbfaff;font-size:clamp(2rem,7vw,3rem)}.spatial-visual b{font-size:1.5rem;color:#a59bdf}.spatial-visual span:last-child{display:grid;place-items:center;width:55px;height:55px;border:2px dashed #b8b1e7;border-radius:15px;background:#f0edff;color:#7664df}.logic-answer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;max-width:580px;margin:18px auto}.logic-answer{display:flex;align-items:center;justify-content:center;gap:10px;min-height:64px;padding:12px 15px;border:2px solid #eeeaf4;border-radius:17px;background:#fff;color:#454d69;font-weight:800;text-align:center;touch-action:manipulation;transition:transform .15s,border-color .15s,background .15s}.logic-answer:hover:not(:disabled){transform:translateY(-2px);border-color:#bdb4f4;background:#faf9ff}.logic-answer:disabled{cursor:default}.answer-visual-grid .logic-answer{min-height:90px;flex-direction:column}.answer-visual{font-size:2.2rem;line-height:1}.logic-answer-grid 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.english-option:disabled{cursor:default}.vocab-public-quiz-card .english-option.wrong{background:#ffe0e0;border-color:#dc7373}.retry-hint{margin:12px auto 0;color:#a8651c;font-weight:800}.vocab-quiz-finish{max-width:720px;margin:0 auto}.vocab-finish-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:24px}.vocab-empty-state{background:#fff;border:2px solid #f1eadf;border-radius:28px;text-align:center;padding:42px 24px;max-width:560px;margin:0 auto}.vocab-empty-state p{margin:10px auto 20px;color:#777b92}.landing-vocab-nav{background:#fff4d9;color:#6357d8!important;padding:8px 14px;border-radius:999px}.auth-quick-links{display:grid;gap:8px;margin-bottom:12px}.vocab-auth-highlight{background:#efedff;color:#6357d8;border:2px solid #d9d4ff}@media(max-width:620px){.vocab-public-header{padding:12px 16px}.vocab-quiz-config-bar{padding:12px 14px}.quiz-filter-group{width:100%;gap:10px}.quiz-filter-group 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