.forest-scene{position:relative;isolation:isolate;overflow:hidden;background:linear-gradient(180deg,#dff5ff,#edfaff 54%,#c8e7a0 54%,#8ecf68)}.forest-scene:before,.forest-scene:after{content:"";position:absolute;z-index:-1;pointer-events:none}.forest-scene:before{left:0;right:0;bottom:10%;height:32%;background:#b5df8b;clip-path:polygon(0 70%,14% 38%,28% 60%,42% 20%,57% 55%,72% 28%,88% 62%,100% 35%,100% 100%,0 100%)}.forest-scene:after{left:0;right:0;bottom:-5%;height:29%;background:#4f9a54;clip-path:polygon(0 48%,7% 18%,13% 54%,20% 10%,28% 55%,36% 20%,45% 62%,55% 9%,63% 58%,72% 15%,80% 52%,90% 12%,100% 50%,100% 100%,0 100%)}.child-home{min-height:100svh;padding:clamp(20px,4vw,48px);display:grid;place-items:center}.learner-switcher{position:absolute;top:14px;right:18px;display:flex;align-items:center;gap:10px;font-size:.95rem;font-weight:600;color:#2e6b34}.learner-gate{min-height:100svh;display:grid;place-items:center;padding:24px}.learner-modal{width:min(430px,100%);display:grid;gap:14px;padding:clamp(22px,5vw,36px);border-radius:26px;background:#fffffff5;box-shadow:0 14px 44px #2d603447;text-align:center}.learner-modal h1{font-size:clamp(1.7rem,6vw,2.2rem);color:#2e6b34}.learner-name-field{display:grid;gap:6px;text-align:left;font-size:.95rem;color:#4a7a4f}.learner-name-field input{padding:12px 14px;font-size:1.15rem;border:2px solid #b9dfc0;border-radius:14px;outline:none}.learner-name-field input:focus{border-color:#4f9a54}.home-stage{width:min(1120px,100%);min-height:min(720px,calc(100svh - 70px));display:grid;grid-template-columns:minmax(320px,.9fr) minmax(480px,1.1fr);align-items:center;gap:clamp(28px,5vw,70px)}.home-mascot-panel{align-self:end;display:grid;place-items:end center}.home-mascot-panel .dino-wrap{width:min(440px,100%);filter:drop-shadow(0 16px 11px rgba(34,84,48,.2))}.home-copy-panel{padding:clamp(28px,4vw,52px);display:flex;flex-direction:column;align-items:flex-start;gap:17px;background:#fffdf7f0;border:3px solid rgba(255,255,255,.8);border-radius:34px;box-shadow:0 10px #31713f38,0 24px 55px #20563329}.child-home-title{margin:0;color:var(--forest-deep);font-size:clamp(2.25rem,4.5vw,4.25rem);line-height:1.12;letter-spacing:-.035em}.home-subtitle{margin:0;color:#52645a;font-size:clamp(1rem,1.8vw,1.25rem);line-height:1.7}.home-stats{display:flex;flex-wrap:wrap;gap:10px}.home-stats span{padding:8px 12px;border-radius:12px;background:#eff8e7;color:var(--forest-deep);font-weight:750}.home-actions{width:100%;display:flex;gap:14px}.home-actions button{flex:1}.hero-button{font-size:1.14rem}.heart-status{display:flex;flex-direction:column;align-items:center;gap:4px}.heart-row{display:flex;gap:4px;line-height:1}.heart-row span{font-size:1.65rem;-webkit-text-stroke:1px rgba(124,34,28,.13)}.heart-full{color:#ef4b4b;filter:drop-shadow(0 2px 0 #bd3030)}.heart-empty{color:#d8dedd}.heart-copy{color:var(--muted);font-size:.86rem;font-weight:750}.heart-status-compact .heart-row span{font-size:1.3rem}.dino-wrap{width:280px;max-width:100%;transform-origin:center bottom;animation:dinoFloat 2.4s ease-in-out infinite}.dino{width:100%;overflow:visible;display:block}.dino-celebrate{animation:celebrate .65s ease}.dino-wrong{animation:dinoWrong .5s ease}.dino-waiting{animation-duration:3.2s;filter:saturate(.82)}@keyframes dinoFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-7px)}}@keyframes celebrate{0%{transform:translateY(0) rotate(0)}35%{transform:translateY(-34px) rotate(-5deg)}65%{transform:translateY(-20px) rotate(5deg)}to{transform:translateY(0)}}@keyframes dinoWrong{25%{transform:translate(-7px) rotate(-2deg)}70%{transform:translate(7px) rotate(2deg)}}.lesson-page{min-height:100svh;padding:18px clamp(20px,4vw,54px) 30px;display:flex;flex-direction:column;align-items:center;text-align:center}.lesson-topbar{position:sticky;top:0;z-index:6;width:min(1080px,100%);min-height:66px;flex-shrink:0;display:grid;grid-template-columns:58px minmax(220px,1fr) auto;align-items:center;gap:clamp(12px,3vw,28px)}.lesson-exit{width:48px;height:48px;border-radius:50%;color:#60736a;background:#fffc;box-shadow:0 4px #51776040;font-size:2rem;line-height:1}.question-progress{display:grid;grid-template-columns:repeat(10,1fr);gap:5px}.question-progress span{height:13px;border-radius:999px;background:#ffffffc7;box-shadow:inset 0 2px #2755341f}.question-progress span.complete{background:var(--sun);box-shadow:0 2px #d5ad29}.exercise-stage{width:min(900px,100%);flex:1;padding:clamp(14px,3vh,30px) 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:clamp(14px,2.5vh,24px)}.question-counter{margin:0;color:var(--forest-deep);font-size:.86rem;font-weight:900;letter-spacing:.08em}.lesson-prompt{margin:0;color:var(--forest-deep);font-size:clamp(1.55rem,3.3vw,2.45rem)}.speaker-button{width:92px;height:86px;display:grid;place-items:center;color:#fff;background:var(--sky-blue);border-radius:28px;box-shadow:0 7px #338bb7;transition:transform .12s ease,box-shadow .12s ease}.speaker-button svg{width:51px;fill:currentColor;stroke:currentColor;stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.speaker-button:active{transform:translateY(6px);box-shadow:0 1px #338bb7}.pronunciation-word,.word-replay{padding:5px 14px;color:var(--forest-deep);background:transparent;border-radius:14px;font-size:clamp(2.7rem,7vw,5.5rem);font-weight:950;line-height:1.15}.pronunciation-word span{margin-left:10px;color:var(--sky-blue);font-size:.45em;vertical-align:middle}.choice-grid{width:min(680px,92vw);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.answer-card{min-height:104px;padding:14px;color:var(--ink);background:#fff;border:3px solid #d7e5dc;border-radius:20px;box-shadow:0 6px #c2d2c7;font-size:clamp(1.15rem,2vw,1.45rem);font-weight:850;transition:transform .12s ease,box-shadow .12s ease,border-color .12s ease}.answer-card:hover:not(:disabled){transform:translateY(-1px);border-color:#9ed9a0}.answer-card:active:not(:disabled){transform:translateY(5px);box-shadow:0 1px #c2d2c7}.spelling-exercise,.letter-tiles{width:min(760px,94vw);display:flex;flex-direction:column;align-items:center;gap:22px}.answer-slots{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.answer-slot{width:57px;min-height:64px;padding:0;color:var(--forest-deep);background:#ffffffad;border:0;border-bottom:5px solid #7c9b87;border-radius:12px 12px 5px 5px;font-size:1.75rem;font-weight:950}.answer-slot-filled{background:#fff;border:2px solid #b8cfc0;border-bottom:5px solid #72927e;box-shadow:0 3px #4666511a}.answer-slot:disabled{opacity:1}.tiles-row{display:flex;flex-wrap:wrap;justify-content:center;gap:11px}.letter-tile{min-width:56px;min-height:58px;padding:0 13px;color:var(--forest-deep);background:#fff;border:2px solid #cfddd4;border-radius:15px;box-shadow:0 5px #b7c9bd;font-size:1.45rem;font-weight:950;transition:transform .12s ease,box-shadow .12s ease}.letter-tile:active:not(:disabled){transform:translateY(4px);box-shadow:0 1px #b7c9bd}.letter-tile:disabled{color:transparent;background:#fff6;box-shadow:none}.check-button{min-width:200px}.pronunciation-box{display:flex;flex-direction:column;align-items:center;gap:14px}.pronunciation-action{min-width:220px;min-height:72px;display:flex;align-items:center;justify-content:center;gap:11px;border-radius:22px;font-size:1.08rem}.pronunciation-action.recording{background:#ef5e58;box-shadow:0 5px #bf3b36}.microphone-icon{width:34px;height:34px;display:grid;place-items:center}.microphone-icon svg{width:31px;fill:currentColor;stroke:currentColor;stroke-width:2.5;stroke-linecap:round;fill-opacity:1}.microphone-icon path{fill:none}.pronunciation-feedback{margin:0;padding:11px 15px;color:var(--forest-deep);background:#ffffffd6;border-radius:13px;font-weight:800}.learning-card{width:min(540px,92vw);padding:clamp(24px,4vw,42px);display:flex;flex-direction:column;align-items:center;gap:16px;background:#ffffffeb;border:3px solid #dce9df;border-radius:28px;box-shadow:0 7px #346a412e}.display-meaning{margin:0;font-size:1.45rem}.feedback-card{position:fixed;z-index:40;left:0;right:0;bottom:0;min-height:210px;padding:22px max(24px,calc((100vw - 900px)/2));display:grid;grid-template-columns:130px minmax(180px,1fr) auto;align-items:center;gap:22px;color:#fff;background:var(--feedback-background);box-shadow:0 -10px 35px #1f3c2c2e;text-align:left;animation:feedbackUp .22s ease-out}.feedback-card .dino-wrap{width:120px}.feedback-card h2{margin:0;font-size:2rem}.feedback-copy{display:flex;flex-direction:column;gap:10px}.feedback-card>.primary-button{min-width:150px}.show-answer{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.show-answer p{margin:0;font-size:1.12rem;font-weight:800}.show-answer .secondary-button{min-height:46px}@keyframes feedbackUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.complete-page{min-height:100svh;padding:28px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;text-align:center;background:linear-gradient(180deg,#e9f9ff,#d9efb7)}.complete-page .dino-wrap{width:min(310px,65vw)}.complete-page h1{margin:0;color:var(--forest-deep);font-size:clamp(2rem,5vw,3rem)}.disconnected{justify-content:center;gap:18px;color:var(--forest-deep);font-size:1.15rem;font-weight:750;background:#f1faef}@media(orientation:portrait),(max-width:900px){.home-stage{min-height:auto;grid-template-columns:1fr;gap:12px}.home-mascot-panel{align-self:center}.home-mascot-panel .dino-wrap{width:min(300px,55vw)}.home-copy-panel{width:min(660px,100%);margin:0 auto;align-items:center;text-align:center}.child-home-title{font-size:clamp(2rem,7vw,3.5rem)}.lesson-page{padding-inline:22px}.feedback-card{grid-template-columns:90px 1fr auto;padding-inline:22px}.feedback-card .dino-wrap{width:88px}}@media(max-width:600px){.child-home{align-items:start;padding:18px 14px 30px;overflow-y:auto}.home-stage{width:100%}.home-mascot-panel .dino-wrap{width:min(210px,60vw)}.home-copy-panel{padding:24px 18px;gap:14px;border-radius:26px}.child-home-title{font-size:clamp(1.85rem,10vw,2.55rem)}.home-actions{flex-direction:column}.heart-row{gap:2px}.lesson-page{min-height:100svh;padding:10px 12px calc(22px + env(safe-area-inset-bottom));overflow-x:hidden;overflow-y:auto}.lesson-topbar{min-height:58px;grid-template-columns:44px minmax(130px,1fr) auto;gap:8px;background:linear-gradient(180deg,#dff5fffa,#dff5ffd1);border-radius:0 0 14px 14px}.lesson-exit{width:40px;height:40px;font-size:1.7rem}.question-progress{gap:3px}.question-progress span{height:9px}.heart-status-compact .heart-row span{font-size:.95rem}.exercise-stage{justify-content:flex-start;padding-top:24px;gap:17px}.choice-grid{width:100%;grid-template-columns:1fr;gap:12px}.answer-card{min-height:70px}.speaker-button{width:78px;height:72px;border-radius:23px}.pronunciation-word,.word-replay{max-width:100%;overflow-wrap:anywhere;font-size:clamp(2.3rem,14vw,4rem)}.spelling-exercise,.letter-tiles{width:100%;gap:18px}.answer-slots{gap:5px}.answer-slot{width:clamp(38px,11vw,50px);min-height:54px;font-size:1.4rem}.tiles-row{gap:8px}.letter-tile{min-width:48px;min-height:52px;padding:0 10px}.feedback-card{min-height:245px;padding:17px 18px calc(17px + env(safe-area-inset-bottom));grid-template-columns:70px 1fr;gap:10px 16px}.feedback-card .dino-wrap{width:70px}.feedback-card>.primary-button{grid-column:1 / -1;width:100%}.feedback-card h2{font-size:1.55rem}}@media(max-height:640px)and (orientation:landscape){.home-stage{min-height:auto}.home-mascot-panel .dino-wrap{width:min(330px,42vh)}.home-copy-panel{padding-block:24px;gap:10px}.exercise-stage{gap:11px;padding-block:8px}.speaker-button{width:72px;height:66px}.answer-card{min-height:76px}}:root{--forest-green: #58cc46;--forest-green-dark: #3fae32;--forest-deep: #245b45;--forest-shadow: #174a37;--cream: #fff8e7;--warm-white: #fffdf7;--sky: #dff5ff;--sky-blue: #56b9eb;--sun: #ffd84d;--coral: #b52a16;--coral-soft: #fff0ec;--ink: #26332d;--muted: #718079;--line: #dce7df;--card-radius: 24px;--tap-size: 56px;--parent-tap-size: 44px;--font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif}*{box-sizing:border-box}html,body,#root{margin:0;min-width:320px;min-height:100%}body{min-height:100vh;font-family:var(--font-family);color:var(--ink);background:#f5f8f5;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button{border:0;cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:4px solid rgba(86,185,235,.45);outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.48}.primary-button,.secondary-button,.small-button{min-height:var(--tap-size);padding:0 22px;border-radius:16px;font-weight:800;transition:transform .12s ease,box-shadow .12s ease,filter .12s ease}.primary-button{color:#fff;background:var(--forest-green);box-shadow:0 5px 0 var(--forest-green-dark)}.secondary-button{color:var(--forest-deep);background:#fff;border:2px solid var(--line);box-shadow:0 5px #cbd8cf}.primary-button:hover:not(:disabled),.secondary-button:hover:not(:disabled),.small-button:hover:not(:disabled){transform:translateY(-1px);filter:brightness(1.02)}.primary-button:active:not(:disabled),.secondary-button:active:not(:disabled),.small-button:active:not(:disabled){transform:translateY(4px);box-shadow:0 1px 0 var(--forest-green-dark)}.text-button{min-height:44px;padding:0 12px;color:var(--forest-deep);background:transparent;font-weight:700}.small-button{min-height:40px;padding:0 14px;color:var(--forest-deep);background:var(--cream);box-shadow:0 3px #dfd6bc}.hint-text{margin:0;color:var(--muted);line-height:1.65}.error-text{color:var(--coral);font-weight:700}.success-text{color:var(--forest-deep);font-weight:800}.eyebrow{margin:0 0 6px;color:var(--forest-green-dark);font-size:.78rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.parent-shell{min-height:100vh;display:grid;grid-template-columns:244px minmax(0,1fr);background:#f5f8f5}.parent-sidebar{position:sticky;top:0;height:100vh;padding:26px 18px 20px;display:flex;flex-direction:column;background:#fff;border-right:1px solid var(--line);z-index:20}.parent-brand{display:flex;align-items:center;gap:12px;padding:0 8px 28px}.parent-brand-mark,.parent-login-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;color:#fff;background:var(--forest-green);box-shadow:0 4px 0 var(--forest-green-dark);font-weight:1000;font-size:1.35rem}.parent-brand div{display:flex;flex-direction:column;gap:2px}.parent-brand span{color:var(--muted);font-size:.78rem}.parent-nav{display:flex;flex-direction:column;gap:8px}.parent-nav-link{min-height:50px;padding:0 15px;display:flex;align-items:center;gap:13px;border-radius:14px;color:#5d6c65;text-decoration:none;font-weight:750}.parent-nav-link:hover{background:#f0f8f1}.parent-nav-link.active{color:var(--forest-deep);background:#e9f8e7}.parent-nav-icon{width:28px;text-align:center;color:var(--forest-green-dark);font-weight:950}.parent-logout{min-height:44px;margin-top:auto;color:var(--muted);background:transparent;font-weight:700}.parent-content{min-width:0;padding:34px clamp(24px,4vw,58px)}.parent-page{width:min(1120px,100%);margin:0 auto;display:flex;flex-direction:column;gap:24px}.parent-page h1,.parent-page h2,.parent-page h3{margin:0}.page-heading,.section-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.page-heading h1,.page-heading h2{font-size:clamp(1.8rem,3vw,2.35rem)}.parent-page input,.parent-page select{width:100%;min-height:var(--parent-tap-size);padding:10px 13px;color:var(--ink);background:#fff;border:2px solid var(--line);border-radius:12px}.parent-page label{font-weight:750}.status-pill{display:inline-flex;align-items:center;width:fit-content;padding:5px 10px;border-radius:999px;color:var(--forest-deep);background:#edf7ec;font-size:.84rem;font-weight:750}.inline-notice{padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--coral-soft);border-radius:14px}.parent-login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(145deg,#ebf9ea,#e6f6ff)}.parent-login-card{width:min(420px,100%);padding:36px;display:flex;flex-direction:column;gap:15px;background:#fff;border:2px solid var(--line);border-radius:28px;box-shadow:0 18px 50px #245b451f}.parent-login-card .parent-login-mark{margin-bottom:5px}.parent-login-card h1{margin:0}.parent-login-card input{min-height:52px;padding:12px;border:2px solid var(--line);border-radius:13px;font-size:1.35rem;letter-spacing:.35em;text-align:center}.dashboard-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.dashboard-card,.trend-card,.attention-card,.settings-card,.import-card,.word-detail-panel{padding:20px;background:#fff;border:2px solid var(--line);border-radius:20px;box-shadow:0 5px #e2e9e4}.dashboard-card{min-height:142px;display:flex;flex-direction:column;gap:5px}.dashboard-card>span:first-child{color:var(--muted);font-weight:700}.dashboard-card strong{color:var(--forest-deep);font-size:2.25rem}.dashboard-card small{color:var(--muted)}.heart-dashboard-card .heart-status{align-items:flex-start}.overview-attention{display:flex;flex-direction:column;gap:8px}.section-heading a{color:var(--forest-deep);font-weight:800;text-decoration:none}.library-toolbar{display:grid;grid-template-columns:minmax(220px,1fr) 180px;gap:12px}.word-list{display:grid;gap:10px}.word-list-row{min-height:64px;padding:10px 16px;display:grid;grid-template-columns:minmax(100px,1fr) minmax(150px,2fr) auto;gap:14px;align-items:center;color:var(--ink);text-align:left;background:#fff;border:2px solid var(--line);border-radius:15px;box-shadow:0 3px #e0e8e2}.word-list-row:hover{border-color:#a9d8aa}.pagination{justify-content:center}.word-detail-panel{position:fixed;top:0;right:0;z-index:30;width:min(520px,92vw);height:100vh;overflow-y:auto;display:flex;flex-direction:column;gap:16px;border-radius:24px 0 0 24px;box-shadow:-16px 0 45px #1c3f302e}.detail-heading{justify-content:space-between}.skill-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.skill-track{padding:14px;display:flex;flex-direction:column;gap:6px;border:1px solid var(--line);border-radius:14px}.import-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.import-card{display:flex;flex-direction:column;gap:13px}.import-icon{display:grid;place-items:center;width:50px;height:50px;border-radius:15px;color:var(--forest-deep);background:#e9f8e7;font-size:1.2rem;font-weight:950}.upload-dropzone{min-height:145px;padding:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;color:var(--forest-deep);background:#f6fbf6;border:2px dashed #9bc99b;border-radius:16px;cursor:pointer;text-align:center}.upload-dropzone input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.upload-dropzone span{color:var(--muted);font-size:.85rem}.empty-ocr-actions{display:flex;flex-direction:column;gap:10px}.review-row{padding:15px;display:flex;flex-direction:column;gap:8px;background:#fff;border:2px solid var(--line);border-radius:15px}.review-row-uncertain{border-color:var(--coral);background:var(--coral-soft)}.review-row .row>input{flex:1;min-width:180px}.progress-page{width:min(1180px,100%)}.progress-heading{justify-content:space-between}.range-toggle{display:flex;gap:8px}.range-toggle button{min-height:42px;padding:0 14px}.overview-grid{display:grid;grid-template-columns:repeat(5,minmax(100px,1fr));gap:12px}.overview-card{padding:17px;display:flex;flex-direction:column;gap:7px;background:#fff;border:2px solid var(--line);border-radius:17px}.overview-card 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