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4px}.theme-toggle-btn{background:var(--c-s1);border:1px solid var(--c-b2);color:var(--c-t1);font-size:17px;width:36px;height:36px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s,transform .15s,border-color .15s;padding:0;flex-shrink:0}.theme-toggle-btn:hover{background:var(--c-b1);border-color:var(--c-am2);transform:scale(1.1)}.home-top-actions{position:absolute;top:20px;right:24px;display:flex;align-items:center;gap:10px}[data-theme=light] body,[data-theme=light] .app{background:var(--c-page);color:var(--c-t1)}[data-theme=light] .lingua-tagline{color:var(--c-t4)}[data-theme=light] .app-header{border-bottom-color:var(--c-b1);background:var(--c-page)}[data-theme=light] .app-subtitle{color:var(--c-t4)}[data-theme=light] .header-fav-btn{background:var(--c-s1);border-color:var(--c-b2);color:var(--c-t1)}[data-theme=light] .header-fav-btn:hover{background:var(--c-s2);border-color:var(--c-am2)}[data-theme=light] 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.analyze-btn:hover{background:linear-gradient(135deg,#e1d5f5,#d1c4e9);box-shadow:0 4px 20px #512da833;color:var(--c-pu2)}[data-theme=light] .analysis-loading{color:var(--c-t4)}[data-theme=light] .loading-bar{border-color:var(--c-b3);border-top-color:var(--c-pu2)}[data-theme=light] .analysis-error{color:var(--c-red)}[data-theme=light] .vocab-title{color:var(--c-blue)}[data-theme=light] .phrase-title{color:var(--c-gr1)}[data-theme=light] .grammar-title{color:var(--c-yel)}[data-theme=light] .vocab-card{background:var(--c-s2);border-left-color:var(--c-pu2)}[data-theme=light] .vocab-word{color:var(--c-t1)}[data-theme=light] .vocab-phonetic{color:var(--c-t4)}[data-theme=light] .vocab-pos{color:var(--c-pu1);background:var(--c-pu-bg)}[data-theme=light] .vocab-ielts{color:var(--c-am1);background:var(--c-am-bg)}[data-theme=light] .vocab-def{color:var(--c-t3)}[data-theme=light] .def-sep{color:var(--c-b3)}[data-theme=light] .def-zh{color:var(--c-t2)}[data-theme=light] .vocab-example{color:var(--c-t4)}[data-theme=light] .phrase-card{background:var(--c-s2);border-left-color:var(--c-gr1)}[data-theme=light] .phrase-text{color:var(--c-gr1)}[data-theme=light] .phrase-meaning{color:var(--c-t2)}[data-theme=light] .phrase-usage,[data-theme=light] .phrase-example{color:var(--c-t4)}[data-theme=light] .grammar-tag{background:var(--c-s3);color:var(--c-yel)}[data-theme=light] .grammar-structure{color:var(--c-t4);background:var(--c-s3)}[data-theme=light] .grammar-overall{color:var(--c-t2);background:var(--c-s2)}[data-theme=light] .clause-item{background:var(--c-s2);border-left-color:var(--c-yel)}[data-theme=light] .clause-type{color:var(--c-yel)}[data-theme=light] .clause-text{color:var(--c-t3)}[data-theme=light] .clause-explain{color:var(--c-t4)}[data-theme=light] .special-points li{color:var(--c-t3)}[data-theme=light] .shadow-reading.placeholder{color:var(--c-t5)}[data-theme=light] .shadow-reading.placeholder strong{color:var(--c-am1)}[data-theme=light] .sr-sentence{border-bottom-color:var(--c-b1)}[data-theme=light] .sr-label{color:var(--c-am1)}[data-theme=light] .sr-text{color:var(--c-t2)}[data-theme=light] .sr-audio-section{background:var(--c-s3);border-bottom-color:var(--c-b1)}[data-theme=light] .sr-audio-header{color:var(--c-t4)}[data-theme=light] .sr-audio-error{color:var(--c-red)}[data-theme=light] .sr-audio-loading{color:var(--c-t4)}[data-theme=light] .mini-spinner{border-color:var(--c-b3);border-top-color:var(--c-pu2)}[data-theme=light] .sr-progress-bar{background:var(--c-b1)}[data-theme=light] .sr-time{color:var(--c-t4)}[data-theme=light] .sr-btn{background:var(--c-s2);border-color:var(--c-b3);color:var(--c-t2)}[data-theme=light] .sr-btn:hover:not(:disabled){background:var(--c-b1);border-color:var(--c-t4)}[data-theme=light] .sr-btn-play{background:var(--c-am-bg2);border-color:var(--c-am-bdr);color:var(--c-am1)}[data-theme=light] .sr-btn-play:hover:not(:disabled){background:var(--c-am-bg);border-color:var(--c-am2);color:var(--c-am2)}[data-theme=light] .sr-btn-play.playing{background:var(--c-am-bg);border-color:var(--c-am1);color:var(--c-am1)}[data-theme=light] .sr-btn-loop.active{background:var(--c-gr-bg);border-color:var(--c-gr1);color:var(--c-gr1)}[data-theme=light] .sr-speed-btn{background:var(--c-s2);border-color:var(--c-b3);color:var(--c-t4)}[data-theme=light] .sr-speed-btn:hover{background:var(--c-b1);color:var(--c-t1)}[data-theme=light] .sr-speed-btn.active{background:var(--c-am-bg);border-color:var(--c-am-bdr);color:var(--c-am1)}[data-theme=light] .analyze-pron-btn{background:linear-gradient(135deg,var(--c-am-bg) 0%,var(--c-am-bg2) 100%);color:var(--c-am1);border-color:var(--c-am-bdr);box-shadow:0 2px 12px #a064321a}[data-theme=light] .analyze-pron-btn:hover{background:linear-gradient(135deg,var(--c-am-bg2) 0%,#ead8c0 100%);box-shadow:0 4px 20px #a0643233;color:var(--c-am2)}[data-theme=light] .sr-pron-loading{color:var(--c-t4)}[data-theme=light] .sr-pron-loading .loading-bar{border-color:var(--c-b3);border-top-color:var(--c-pu2)}[data-theme=light] .sr-pron-error{color:var(--c-red)}[data-theme=light] .pron-title{color:var(--c-am1)}[data-theme=light] .stress-title{color:var(--c-pu1)}[data-theme=light] .rhythm-title{color:var(--c-yel)}[data-theme=light] .connect-title{color:var(--c-gr1)}[data-theme=light] .inton-title{color:#a060d0}[data-theme=light] .tips-title{color:var(--c-am1)}[data-theme=light] .sr-phonetic{background:var(--c-s2);color:var(--c-t1)}[data-theme=light] .sr-word-chip{background:var(--c-s2);border-top-color:var(--c-b3)}[data-theme=light] .sr-word-chip.stressed{border-top-color:var(--c-pu2);background:var(--c-pu-bg)}[data-theme=light] .sr-word-text{color:var(--c-t1)}[data-theme=light] .sr-word-ipa{color:var(--c-t4)}[data-theme=light] .sr-word-note{color:var(--c-t5)}[data-theme=light] .sr-rhythm-pattern{color:var(--c-yel);background:var(--c-s2)}[data-theme=light] .sr-rhythm-desc{color:var(--c-t4)}[data-theme=light] .sr-connect-card{background:var(--c-s2);border-left-color:var(--c-gr1)}[data-theme=light] .sr-connect-type,[data-theme=light] .type-linking{background:var(--c-gr-bg);color:var(--c-gr1)}[data-theme=light] .type-weak_form{background:var(--c-pu-bg);color:var(--c-pu1)}[data-theme=light] .type-elision{background:#fde8e8;color:#c03838}[data-theme=light] .type-assimilation{background:#fdf8e0;color:#907020}[data-theme=light] .type-intrusion{background:#f0e8fc;color:#8040c0}[data-theme=light] .sr-connect-words{color:var(--c-t1)}[data-theme=light] .sr-connect-desc{color:var(--c-t3)}[data-theme=light] .sr-no-highlights{color:var(--c-gr1)}[data-theme=light] .sr-intonation{background:var(--c-s2)}[data-theme=light] .sr-inton-pattern{background:var(--c-pu-bg);color:#8040c0}[data-theme=light] .sr-inton-desc{color:var(--c-t4)}[data-theme=light] .sr-tips li{color:var(--c-t2)}[data-theme=light] .sr-tips li::marker{color:var(--c-am1)}[data-theme=light] .sr-record-btn{background:var(--c-s2);border-color:var(--c-b3);color:var(--c-t2)}[data-theme=light] .sr-record-btn:hover:not(:disabled){background:var(--c-b1);border-color:var(--c-t4)}[data-theme=light] .sr-record-status{color:var(--c-t4)}[data-theme=light] .sr-record-error{color:var(--c-red)}[data-theme=light] .sr-record-done{color:var(--c-gr1)}[data-theme=light] .pitch-curve-wrap{background:#f1f3f4cc}[data-theme=light] .pitch-word{color:var(--c-t4)}[data-theme=light] .pitch-word.stressed{color:var(--c-pu2)}[data-theme=light] .pitch-lyrics-divider{background:#673ab726}[data-theme=light] .drawer-backdrop{background:#20212466}[data-theme=light] .favorites-drawer{background:var(--c-s1);border-left-color:var(--c-b2);box-shadow:-4px 0 20px #0000001f}[data-theme=light] .drawer-header{border-bottom-color:var(--c-b1)}[data-theme=light] .drawer-header h3{color:var(--c-t1)}[data-theme=light] .drawer-close-btn{color:var(--c-t4)}[data-theme=light] .drawer-close-btn:hover{background:var(--c-b1);color:var(--c-t1)}[data-theme=light] .drawer-empty{color:var(--c-t4)}[data-theme=light] .drawer-empty-hint{color:var(--c-t5)!important}[data-theme=light] .drawer-toolbar{border-bottom-color:var(--c-b1)}[data-theme=light] .drawer-select-all{color:var(--c-t4)}[data-theme=light] .drawer-select-all:hover{color:var(--c-t1)}[data-theme=light] .checkbox{color:var(--c-t4)}[data-theme=light] .checkbox.checked{color:var(--c-am1)}[data-theme=light] .drawer-clear-btn{border-color:var(--c-b3);color:var(--c-red)}[data-theme=light] .drawer-clear-btn:hover{background:#fde8e8}[data-theme=light] .drawer-list::-webkit-scrollbar-thumb{background:var(--c-b3)}[data-theme=light] .drawer-item{border-bottom-color:var(--c-b1)}[data-theme=light] .drawer-item:hover{background:var(--c-s2)}[data-theme=light] .drawer-item-text{color:var(--c-t2)}[data-theme=light] .drawer-item-time{color:var(--c-t4)}[data-theme=light] .drawer-remove-btn{color:var(--c-t5)}[data-theme=light] .drawer-remove-btn:hover{color:var(--c-red);background:#fde8e8}[data-theme=light] .drawer-footer{border-top-color:var(--c-b1)}[data-theme=light] .drawer-quiz-btn{background:linear-gradient(135deg,var(--c-pu-bg) 0%,#d1c4e9 100%);color:var(--c-pu2);border-color:#b39ddb}[data-theme=light] .drawer-quiz-btn:hover:not(:disabled){background:linear-gradient(135deg,#d1c4e9,#c5b0e8);color:var(--c-pu2)}[data-theme=light] .quiz-panel{background:var(--c-page)}[data-theme=light] .quiz-header{background:var(--c-page);border-bottom-color:var(--c-b1)}[data-theme=light] .quiz-header h3{color:var(--c-t1)}[data-theme=light] .quiz-close-btn{color:var(--c-t4)}[data-theme=light] .quiz-close-btn:hover{background:var(--c-s2);color:var(--c-t1)}[data-theme=light] .q-type-badge{background:linear-gradient(135deg,var(--c-pu-bg),#d1c4e9);border-color:#b39ddb;color:var(--c-pu1)}[data-theme=light] .q-time-hint{color:var(--c-t4)}[data-theme=light] .waveform-wrapper{border-color:var(--c-b1)}[data-theme=light] .karaoke-line{color:var(--c-t3);background:#e8eaed80;border-left-color:#673ab71f}[data-theme=light] .karaoke-line:first-child{border-left-color:var(--c-pu2);color:var(--c-t1);background:var(--c-s2)}[data-theme=light] .q-hint{color:var(--c-t3);background:var(--c-am-bg);border-left-color:var(--c-am2)}[data-theme=light] .live-text-area{background:var(--c-s2);border-color:var(--c-b2)}[data-theme=light] .live-text-label{color:var(--c-pu1)}[data-theme=light] .live-text-content{color:var(--c-t2)}[data-theme=light] .live-cursor{color:var(--c-pu1)}[data-theme=light] .recorded-playback{background:var(--c-s2);border-color:var(--c-b2)}[data-theme=light] .rec-btn.start{background:linear-gradient(135deg,var(--c-pu-bg),#d1c4e9);color:var(--c-pu2);border-color:#b39ddb;box-shadow:0 4px 20px #512da81f}[data-theme=light] .rec-btn.start:hover{background:linear-gradient(135deg,#d1c4e9,#c5b0e8);color:var(--c-pu2);box-shadow:0 6px 28px #512da838}[data-theme=light] .rec-action-btn.redo{background:var(--c-s2);color:var(--c-t3);border-color:var(--c-b3)}[data-theme=light] .rec-action-btn.redo:hover{background:var(--c-b1);color:var(--c-t1)}[data-theme=light] .rec-action-btn.submit{background:linear-gradient(135deg,var(--c-pu-bg),#d1c4e9);color:var(--c-pu2);border-color:#b39ddb;box-shadow:0 3px 14px #512da81f}[data-theme=light] .rec-action-btn.submit:hover:not(:disabled){background:linear-gradient(135deg,#d1c4e9,#c5b0e8);color:var(--c-pu2);box-shadow:0 5px 20px #512da838}[data-theme=light] .quiz-error{color:var(--c-red)}[data-theme=light] .q-source{background:var(--c-s3);color:var(--c-t4)}[data-theme=light] .q-source-label{color:var(--c-pu1)}[data-theme=light] .quiz-footer{border-top-color:var(--c-b1)}[data-theme=light] .quiz-back-btn{border-color:var(--c-b3);color:var(--c-t3)}[data-theme=light] .quiz-back-btn:hover{background:var(--c-s2);color:var(--c-t1)}[data-theme=light] .quiz-retry-btn{background:linear-gradient(135deg,var(--c-pu-bg),#d1c4e9);color:var(--c-pu2);border-color:#b39ddb}[data-theme=light] .quiz-retry-btn:hover{background:linear-gradient(135deg,#d1c4e9,#c5b0e8);color:var(--c-pu2)}[data-theme=light] .overall-band-ring{background:linear-gradient(135deg,var(--c-s3),var(--c-s2));border-color:var(--c-pu2);box-shadow:0 0 30px #512da81a}[data-theme=light] .overall-band-num{color:var(--c-pu1)}[data-theme=light] .overall-band-label{color:var(--c-t4)}[data-theme=light] .overall-band-tag{background:var(--c-pu-bg);border-color:#b39ddb;color:var(--c-pu1)}[data-theme=light] .band-score-card{background:var(--c-s2);border-color:var(--c-b1)}[data-theme=light] .band-score-label{color:var(--c-t3)}[data-theme=light] .band-score-num{color:var(--c-pu1)}[data-theme=light] .band-score-bar-bg{background:var(--c-b1)}[data-theme=light] .band-score-feedback{color:var(--c-t4)}[data-theme=light] .score-section h4{color:var(--c-t1)}[data-theme=light] .score-transcription{color:var(--c-t2);background:var(--c-s2);border-color:var(--c-b1)}[data-theme=light] .score-improved{color:var(--c-gr1);background:var(--c-gr-bg);border-color:var(--c-gr-bdr)}[data-theme=light] .score-suggestions li{color:var(--c-t3)}[data-theme=light] .score-suggestions li::marker{color:var(--c-am1)}[data-theme=light] .score-summary-box{background:linear-gradient(135deg,var(--c-pu-bg),#d1c4e9);border-color:#b39ddb;color:var(--c-t2)}[data-theme=light] .score-playback{background:var(--c-s2);border-color:var(--c-b1)}[data-theme=light] .score-playback-label{color:var(--c-t4)}[data-theme=light] .ref-toggle-btn{background:var(--c-am-bg);border-color:var(--c-am-bdr);color:var(--c-am1)}[data-theme=light] .ref-toggle-btn:hover{background:var(--c-am-bg2);border-color:var(--c-am2)}[data-theme=light] .ref-speak-btn{background:var(--c-am-bg);border-color:var(--c-am-bdr);color:var(--c-t2)}[data-theme=light] .ref-speak-btn:hover{background:var(--c-am-bg2);border-color:var(--c-am2);color:var(--c-am1)}[data-theme=light] .score-ref-header h4{color:var(--c-t1)}[data-theme=light] .ref-answer-body{background:var(--c-s2);border-color:var(--c-b1)}[data-theme=light] .ref-answer-text{color:var(--c-t2)}[data-theme=light] .score-ref{background:var(--c-s2);border-color:var(--c-b1)}[data-theme=light] mark.hl-phrase{background:#7a4e281a;color:var(--c-am1);border-bottom-color:var(--c-am1)}[data-theme=light] mark.hl-word{background:#673ab71a;color:var(--c-pu2);border-bottom-color:var(--c-pu1)}[data-theme=light] .hl-legend-item.phrase{color:var(--c-am1)}[data-theme=light] .hl-legend-item.word{color:var(--c-pu1)}[data-theme=light] .hl-legend-item.grammar{color:var(--c-gr1)}[data-theme=light] .hl-legend-hint{color:var(--c-t5)}[data-theme=light] .hl-grammar-label{color:var(--c-t4)}[data-theme=light] .hl-grammar-chip{background:var(--c-gr-bg);border-color:var(--c-gr1);color:var(--c-gr1)}[data-theme=light] mark.hl-grammar-use{background:#20a07814;color:#1a7a5a;border-bottom-color:#20a078}[data-theme=light] .lang-notes-section{border-top-color:var(--c-b1)}[data-theme=light] .lang-notes-toggle{color:var(--c-blu1)}[data-theme=light] .lang-notes-toggle:hover{color:var(--c-blu2)}[data-theme=light] .lang-notes-count{background:var(--c-s2);color:var(--c-blu1)}[data-theme=light] .lang-note-card{background:var(--c-s2);border-color:var(--c-b1)}[data-theme=light] .lang-note-text{color:var(--c-t1)}[data-theme=light] .lang-note-explanation{color:var(--c-t3)}[data-theme=light] .lang-note-example,[data-theme=light] .lang-note-extension{color:#3a6640}[data-theme=light] .lang-note-label{color:var(--c-t4)}[data-theme=light] .score-playback-dur,[data-theme=light] .recorded-duration{color:var(--c-blu1)}[data-theme=light] .answer-mode-tabs{background:var(--c-s3);border-color:var(--c-b1)}[data-theme=light] .mode-tab{color:var(--c-t4)}[data-theme=light] .mode-tab:hover{color:var(--c-t2);background:var(--c-s2)}[data-theme=light] .mode-tab.active{background:var(--c-s1);color:var(--c-t1)}[data-theme=light] .text-answer-input{background:var(--c-s1);border-color:var(--c-b2);color:var(--c-t1)}[data-theme=light] .text-answer-input:focus{border-color:var(--c-pu1)}[data-theme=light] .text-answer-input::placeholder{color:var(--c-t5)}[data-theme=light] .text-answer-count{color:var(--c-t4)}[data-theme=light] .audio-player{background:var(--c-s1);border-color:var(--c-b2)}[data-theme=light] .ap-btn{border-color:var(--c-blu1);background:var(--c-b1);color:var(--c-blu1)}[data-theme=light] .ap-btn:hover{background:var(--c-blu1);color:#fff}[data-theme=light] .ap-bar-bg{background:var(--c-b2)}[data-theme=light] .ap-thumb{background:var(--c-blu1)}[data-theme=light] .ap-time{color:var(--c-t4)}