@keyframes AssignmentPlayer-module__Oibb2W__skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.AssignmentPlayer-module__Oibb2W__pageContainer{background-color:var(--teacher-bg-body,#f7f8fa);flex-direction:column;width:100%;height:100%;display:flex}.AssignmentPlayer-module__Oibb2W__header{background-color:var(--teacher-bg-card,#fff);border-bottom:1px solid var(--teacher-border-color,#e5e6eb);flex-shrink:0;justify-content:space-between;align-items:center;height:64px;padding:16px 32px;display:flex}.AssignmentPlayer-module__Oibb2W__mainLayout{flex-grow:1;gap:16px;padding:16px;display:flex;overflow:hidden}.AssignmentPlayer-module__Oibb2W__questionViewer{background-color:var(--teacher-bg-card,#fff);border:1px solid var(--teacher-border-color,#e5e6eb);border-radius:12px;flex-grow:1;padding:32px;overflow-y:auto}.AssignmentPlayer-module__Oibb2W__answerSheet{background-color:var(--teacher-bg-card,#fff);border:1px solid var(--teacher-border-color,#e5e6eb);border-radius:12px;flex-shrink:0;width:320px;padding:24px;overflow-y:auto}.AssignmentPlayer-module__Oibb2W__controlPanel{background-color:var(--teacher-bg-card,#fff);border-top:1px solid var(--teacher-border-color,#e5e6eb);flex-shrink:0;align-items:center;gap:16px;height:72px;padding:16px 32px;display:flex}.AssignmentPlayer-module__Oibb2W__skeleton{background-color:var(--teacher-bg-card,#fff)}.AssignmentPlayer-module__Oibb2W__line_skeleton{background:linear-gradient(90deg,#f0f2f5 25%,#e6e8eb 50%,#f0f2f5 75%) 0 0/200% 100%;border-radius:4px;height:16px;animation:1.5s infinite AssignmentPlayer-module__Oibb2W__skeleton-loading}.AssignmentPlayer-module__Oibb2W__button_skeleton{background:linear-gradient(90deg,#f0f2f5 25%,#e6e8eb 50%,#f0f2f5 75%) 0 0/200% 100%;border-radius:8px;height:40px;animation:1.5s infinite AssignmentPlayer-module__Oibb2W__skeleton-loading}.AssignmentPlayer-module__Oibb2W__questionViewer.AssignmentPlayer-module__Oibb2W__skeleton .AssignmentPlayer-module__Oibb2W__line_skeleton{margin-bottom:16px}.AssignmentPlayer-module__Oibb2W__answer_grid_skeleton{grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:12px;display:grid}.AssignmentPlayer-module__Oibb2W__answer_item_skeleton{background:linear-gradient(90deg,#f0f2f5 25%,#e6e8eb 50%,#f0f2f5 75%) 0 0/200% 100%;border-radius:8px;width:40px;height:40px;animation:1.5s infinite AssignmentPlayer-module__Oibb2W__skeleton-loading}.AssignmentPlayer-module__Oibb2W__feedbackContainer{text-align:center;width:100%;height:100%;color:var(--teacher-text-tertiary,#86909c);flex-direction:column;justify-content:center;align-items:center;padding:40px;display:flex}.AssignmentPlayer-module__Oibb2W__feedbackContainer i{opacity:.5;margin-bottom:24px;font-size:56px}.AssignmentPlayer-module__Oibb2W__feedbackContainer i.AssignmentPlayer-module__Oibb2W__fa-exclamation-circle{color:var(--teacher-red,#f53f3f)}.AssignmentPlayer-module__Oibb2W__feedbackContainer p{font-size:18px}
.PlayerHeader-module__f8KeHW__header{background-color:var(--teacher-bg-card,#fff);border-bottom:1px solid var(--teacher-border-color,#e5e6eb);flex-shrink:0;justify-content:space-between;align-items:center;height:64px;padding:0 32px;display:flex}.PlayerHeader-module__f8KeHW__leftSection{align-items:center;gap:16px;display:flex}.PlayerHeader-module__f8KeHW__backButton{color:var(--teacher-text-secondary,#4e5969);border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;padding:8px;font-size:18px;transition:background-color .2s;display:flex}.PlayerHeader-module__f8KeHW__backButton:hover{background-color:#f2f3f5}.PlayerHeader-module__f8KeHW__titleContainer{flex-direction:column;display:flex}.PlayerHeader-module__f8KeHW__title{color:var(--teacher-text-primary,#1d2129);margin:0;font-size:18px;font-weight:600}.PlayerHeader-module__f8KeHW__metaInfo{color:var(--teacher-text-tertiary,#86909c);align-items:center;gap:8px;margin-top:2px;font-size:12px;display:flex}.PlayerHeader-module__f8KeHW__metaInfo i{font-size:11px}.PlayerHeader-module__f8KeHW__divider{color:var(--teacher-border-color,#e5e6eb)}.PlayerHeader-module__f8KeHW__rightSection{align-items:center;gap:24px;display:flex}.PlayerHeader-module__f8KeHW__countdown{color:var(--teacher-text-secondary,#4e5969);align-items:center;gap:8px;font-size:14px;display:flex}.PlayerHeader-module__f8KeHW__countdown i{color:var(--teacher-primary,#2f7bff);font-size:16px}.PlayerHeader-module__f8KeHW__timeValue{color:var(--teacher-primary,#2f7bff);font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;font-size:15px;font-weight:600}
.QuestionViewer-module__RShJ7q__viewerContainer{background-color:var(--teacher-bg-card,#fff);border:1px solid var(--teacher-border-color,#e5e6eb);border-radius:12px;flex-direction:column;flex-grow:1;padding:32px;display:flex;overflow-y:auto}.QuestionViewer-module__RShJ7q__loadingState{color:var(--teacher-text-tertiary);justify-content:center;align-items:center;gap:12px;font-size:16px}.QuestionViewer-module__RShJ7q__loadingState i{font-size:24px}.QuestionViewer-module__RShJ7q__questionHeader{border-bottom:1px solid var(--teacher-border-color,#e5e6eb);justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:16px;display:flex}.QuestionViewer-module__RShJ7q__questionCounter{color:var(--teacher-primary,#2f7bff);font-size:18px;font-weight:600}.QuestionViewer-module__RShJ7q__questionMeta{color:var(--teacher-text-secondary,#4e5969);align-items:center;gap:12px;font-size:14px;display:flex}.QuestionViewer-module__RShJ7q__divider{color:var(--teacher-border-color,#e5e6eb)}.QuestionViewer-module__RShJ7q__stemContainer{margin-bottom:32px;font-size:16px;line-height:1.8}.QuestionViewer-module__RShJ7q__answerArea{border-top:1px dashed var(--teacher-border-color,#e5e6eb);margin-top:auto;padding-top:24px}.QuestionViewer-module__RShJ7q__areaTitle{color:var(--teacher-text-primary,#1d2129);margin:0 0 16px;font-size:16px;font-weight:600}.QuestionViewer-module__RShJ7q__optionsContainer{flex-direction:column;gap:12px;display:flex}.QuestionViewer-module__RShJ7q__optionLabel{border:1px solid var(--teacher-border-color,#e5e6eb);cursor:pointer;border-radius:8px;align-items:center;padding:12px 16px;transition:all .2s;display:flex}.QuestionViewer-module__RShJ7q__optionLabel:hover{border-color:var(--teacher-primary,#2f7bff);background-color:#f7f9ff}.QuestionViewer-module__RShJ7q__optionLabel.QuestionViewer-module__RShJ7q__selected{border-color:var(--teacher-primary,#2f7bff);background-color:var(--teacher-primary-light-bg,#2f7bff1a);box-shadow:0 0 0 1px var(--teacher-primary,#2f7bff)}.QuestionViewer-module__RShJ7q__radioInput,.QuestionViewer-module__RShJ7q__checkboxInput{width:16px;height:16px;accent-color:var(--teacher-primary,#2f7bff);margin-right:12px}.QuestionViewer-module__RShJ7q__optionText{font-size:15px;line-height:1.6}.QuestionViewer-module__RShJ7q__textareaAnswer{border:1px solid var(--teacher-border-color,#e5e6eb);resize:vertical;border-radius:8px;width:100%;padding:12px;font-size:15px;line-height:1.7;transition:all .2s}.QuestionViewer-module__RShJ7q__textareaAnswer:focus{border-color:var(--teacher-primary,#2f7bff);outline:none;box-shadow:0 0 0 3px #2f7bff26}
pre code.hljs{padding:1em;display:block;overflow-x:auto}code.hljs{padding:3px 5px}.hljs{color:#abb2bf;background:#282c34}.hljs-comment,.hljs-quote{color:#5c6370;font-style:italic}.hljs-doctag,.hljs-keyword,.hljs-formula{color:#c678dd}.hljs-section,.hljs-name,.hljs-selector-tag,.hljs-deletion,.hljs-subst{color:#e06c75}.hljs-literal{color:#56b6c2}.hljs-string,.hljs-regexp,.hljs-addition,.hljs-attribute,.hljs-meta .hljs-string{color:#98c379}.hljs-attr,.hljs-variable,.hljs-template-variable,.hljs-type,.hljs-selector-class,.hljs-selector-attr,.hljs-selector-pseudo,.hljs-number{color:#d19a66}.hljs-symbol,.hljs-bullet,.hljs-link,.hljs-meta,.hljs-selector-id,.hljs-title{color:#61aeee}.hljs-built_in,.hljs-title.class_,.hljs-class .hljs-title{color:#e6c07b}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}.hljs-link{text-decoration:underline}
.MessageThinkingPanel-module__uXScvq__thinkingPanel{scrollbar-width:thin;scrollbar-color:#58a6ff #161b22;background-color:#f8f8ff;border:1px solid #b8b5b5;border-radius:8px;max-height:280px;margin-bottom:16px;padding:16px;font-size:13px;overflow-y:auto}.MessageThinkingPanel-module__uXScvq__thinkingPanel::-webkit-scrollbar{width:6px}.MessageThinkingPanel-module__uXScvq__thinkingPanel::-webkit-scrollbar-thumb{background-color:#58a6ff;border-radius:3px}.MessageThinkingPanel-module__uXScvq__thinkingPanel::-webkit-scrollbar-track{background:#161b22}.MessageThinkingPanel-module__uXScvq__thinkingPanel h4{color:#0d72d8;align-items:center;gap:8px;margin:0 0 12px;font-size:14px;font-weight:600;display:flex}.MessageThinkingPanel-module__uXScvq__thinkingPanel h4 i{color:#58a6ff}.MessageThinkingPanel-module__uXScvq__thinkingPanel pre{white-space:pre-wrap;word-break:break-all;color:#8b949e;margin:0;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;font-size:.9em;line-height:1.7}
.MessageActions-module__wHXAgW__messageActions{border-top:1px solid var(--widget-border-color);align-items:center;gap:12px;margin-top:16px;padding-top:12px;display:flex}.MessageActions-module__wHXAgW__messageActions button{color:var(--widget-text-tertiary);cursor:pointer;background:0 0;border:none;border-radius:6px;align-items:center;gap:6px;padding:6px 10px;font-size:13px;font-weight:500;transition:all .2s;display:flex}.MessageActions-module__wHXAgW__messageActions button:hover{color:var(--widget-primary-blue);background-color:var(--widget-primary-light-bg)}.MessageActions-module__wHXAgW__messageActions button:active{transform:scale(.95)}@media (max-width:768px){.MessageActions-module__wHXAgW__messageActions{gap:8px}.MessageActions-module__wHXAgW__messageActions button{gap:4px;padding:6px 8px;font-size:12px}}
.QuestionPreviewCard-module__mojRvq__card{background-color:var(--teacher-white);border:1px solid var(--teacher-border-color);border-radius:16px;overflow:hidden;box-shadow:0 8px 30px #00000012}.QuestionPreviewCard-module__mojRvq__header{background-color:#fcfdfe;border-bottom:1px solid #f0f2f5;justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.QuestionPreviewCard-module__mojRvq__header h2{color:var(--teacher-text-primary);margin:0;font-size:20px;font-weight:600}.QuestionPreviewCard-module__mojRvq__metaTags{gap:12px;display:flex}.QuestionPreviewCard-module__mojRvq__tag{border-radius:16px;padding:6px 14px;font-size:13px;font-weight:600;display:inline-block}.QuestionPreviewCard-module__mojRvq__tag.QuestionPreviewCard-module__mojRvq__EASY{color:#166534;background-color:#dcfce7}.QuestionPreviewCard-module__mojRvq__tag.QuestionPreviewCard-module__mojRvq__MEDIUM{color:#854d0e;background-color:#fef9c3}.QuestionPreviewCard-module__mojRvq__tag.QuestionPreviewCard-module__mojRvq__HARD{color:#991b1b;background-color:#fee2e2}.QuestionPreviewCard-module__mojRvq__body{flex-direction:column;gap:32px;padding:24px 32px;display:flex}.QuestionPreviewCard-module__mojRvq__section{flex-direction:column;gap:16px;display:flex}.QuestionPreviewCard-module__mojRvq__sectionTitle{color:var(--teacher-text-primary);border-bottom:1px solid #f3f4f6;align-items:center;gap:10px;padding-bottom:12px;font-size:16px;font-weight:600;display:flex}.QuestionPreviewCard-module__mojRvq__sectionTitle i{color:var(--teacher-primary)}.QuestionPreviewCard-module__mojRvq__contentViewer{color:var(--teacher-text-secondary);font-size:16px;line-height:1.8}.QuestionPreviewCard-module__mojRvq__optionsContainer{flex-direction:column;gap:12px;display:flex}.QuestionPreviewCard-module__mojRvq__optionItem{border:1px solid #0000;border-radius:8px;align-items:flex-start;gap:16px;padding:12px;display:flex}.QuestionPreviewCard-module__mojRvq__optionItem.QuestionPreviewCard-module__mojRvq__correct{background-color:#f0fdf4;border-color:#bbf7d0}.QuestionPreviewCard-module__mojRvq__optionLetter{color:#4b5563;background-color:#e5e7eb;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;margin-top:5px;font-weight:700;display:flex}.QuestionPreviewCard-module__mojRvq__optionItem.QuestionPreviewCard-module__mojRvq__correct .QuestionPreviewCard-module__mojRvq__optionLetter{color:#fff;background-color:#22c55e}.QuestionPreviewCard-module__mojRvq__optionText{flex-grow:1}.QuestionPreviewCard-module__mojRvq__answerAnalysisSection{background-color:#f9fafb;border:1px solid #f3f4f6;border-radius:12px;grid-template-columns:1fr 2fr;gap:24px;padding:24px;display:grid}.QuestionPreviewCard-module__mojRvq__answerBox,.QuestionPreviewCard-module__mojRvq__analysisBox{flex-direction:column;gap:16px;display:flex}.QuestionPreviewCard-module__mojRvq__analysisBox{border-left:1px solid #e5e7eb;padding-left:24px}.QuestionPreviewCard-module__mojRvq__noAnalysis{color:var(--teacher-text-tertiary);font-style:italic}.QuestionPreviewCard-module__mojRvq__footer{color:var(--teacher-text-secondary);background-color:#f9fafb;border-top:1px solid #f0f2f5;flex-wrap:wrap;justify-content:space-between;gap:16px;padding:20px 24px;font-size:14px;display:flex}.QuestionPreviewCard-module__mojRvq__footerSection{align-items:center;gap:8px;display:flex}.QuestionPreviewCard-module__mojRvq__pointList{flex-wrap:wrap;gap:8px;display:flex}.QuestionPreviewCard-module__mojRvq__pointTag{color:#4338ca;background-color:#eef2ff;border-radius:6px;padding:4px 10px;font-weight:500}
.OptionsViewer-module__Lm23IG__optionsWrapper{flex-direction:column;gap:10px;margin:0;padding:0 20px 16px;list-style:none;display:flex}.OptionsViewer-module__Lm23IG__optionItem{border-radius:8px;align-items:flex-start;gap:12px;padding:10px;transition:background-color .2s;display:flex}.OptionsViewer-module__Lm23IG__optionLetter{color:var(--teacher-text-secondary);border:2px solid #e5e7eb;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:20px;height:20px;margin-top:4px;font-weight:600;display:flex}.OptionsViewer-module__Lm23IG__optionText{flex-grow:1}.OptionsViewer-module__Lm23IG__optionItem.OptionsViewer-module__Lm23IG__correct{background-color:#f0fdf4}.OptionsViewer-module__Lm23IG__optionItem.OptionsViewer-module__Lm23IG__correct .OptionsViewer-module__Lm23IG__optionLetter{color:#fff;background-color:#22c55e;border-color:#22c55e}.OptionsViewer-module__Lm23IG__optionText .markdown-body{color:inherit;padding:0;font-size:14px;line-height:1.7;background-color:#0000!important}.OptionsViewer-module__Lm23IG__optionText .markdown-body p:first-child{margin-top:0}.OptionsViewer-module__Lm23IG__optionText .markdown-body p:last-child{margin-bottom:0}
.AnswerSheet-module__0WgUGa__sheetContainer{background-color:var(--teacher-bg-card,#fff);border:1px solid var(--teacher-border-color,#e5e6eb);border-radius:12px;flex-direction:column;flex-shrink:0;width:320px;padding:24px;display:flex;overflow-y:auto}.AnswerSheet-module__0WgUGa__title{color:var(--teacher-text-primary,#1d2129);border-bottom:1px solid var(--teacher-border-color,#e5e6eb);margin:0 0 20px;padding-bottom:16px;font-size:18px;font-weight:600}.AnswerSheet-module__0WgUGa__typeGroup{margin-bottom:20px}.AnswerSheet-module__0WgUGa__groupTitle{color:var(--teacher-text-secondary,#4e5969);margin:0 0 12px;font-size:14px;font-weight:500}.AnswerSheet-module__0WgUGa__answerGrid{grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:12px;display:grid}.AnswerSheet-module__0WgUGa__answerItem{border:1px solid var(--teacher-border-color,#e5e6eb);width:40px;height:40px;color:var(--teacher-text-secondary,#4e5969);cursor:pointer;background-color:#f7f8fa;border-radius:8px;justify-content:center;align-items:center;font-size:14px;font-weight:500;transition:all .2s;display:flex;position:relative}.AnswerSheet-module__0WgUGa__answerItem:hover{border-color:var(--teacher-primary,#2f7bff);color:var(--teacher-primary,#2f7bff)}.AnswerSheet-module__0WgUGa__answerItem.AnswerSheet-module__0WgUGa__answered{color:var(--teacher-primary,#2f7bff);background-color:#e6efff;border-color:#a3c2ff}.AnswerSheet-module__0WgUGa__answerItem.AnswerSheet-module__0WgUGa__current{border-color:var(--teacher-primary,#2f7bff);background-color:var(--teacher-primary,#2f7bff);color:#fff;transform:scale(1.05);box-shadow:0 4px 12px #2f7bff4d}.AnswerSheet-module__0WgUGa__markIndicator{background-color:var(--teacher-primary,#f59e0b);border:1px solid #fff;border-radius:50%;width:8px;height:8px;position:absolute;top:4px;right:4px}
.AnswerAnalysisViewer-module__GKaOhq__answerWrapper{background-color:#f9fafb;border:1px solid #f3f4f6;border-radius:12px;margin:0 20px 20px;padding:16px;font-size:14px;line-height:1.7}.AnswerAnalysisViewer-module__GKaOhq__answerWrapper strong{color:var(--teacher-text-primary);margin-right:8px}.AnswerAnalysisViewer-module__GKaOhq__answerWrapper .markdown-body{color:inherit;padding:0;display:inline;background-color:#0000!important}.AnswerAnalysisViewer-module__GKaOhq__answerWrapper .markdown-body p{margin:0;display:inline}
.ControlPanel-module__E7Sf_G__panelContainer{background-color:var(--teacher-bg-card,#fff);border-top:1px solid var(--teacher-border-color,#e5e6eb);flex-shrink:0;justify-content:space-between;align-items:center;gap:16px;height:72px;padding:16px 32px;display:flex;box-shadow:0 -4px 12px #00000008}.ControlPanel-module__E7Sf_G__leftActions,.ControlPanel-module__E7Sf_G__rightActions{flex:1}.ControlPanel-module__E7Sf_G__rightActions{justify-content:flex-end;display:flex}.ControlPanel-module__E7Sf_G__mainActions{gap:16px;display:flex}.ControlPanel-module__E7Sf_G__navButton,.ControlPanel-module__E7Sf_G__submitButton,.ControlPanel-module__E7Sf_G__secondaryButton{cursor:pointer;border:1px solid var(--teacher-border-color,#e5e6eb);border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:10px 24px;font-size:15px;font-weight:500;transition:all .2s;display:inline-flex}.ControlPanel-module__E7Sf_G__navButton{background-color:var(--teacher-white);color:var(--teacher-text-primary,#1d2129)}.ControlPanel-module__E7Sf_G__navButton:hover:not(:disabled){background-color:#f7f8fa;border-color:#d1d5db}.ControlPanel-module__E7Sf_G__submitButton{background-color:var(--teacher-primary,#2f7bff);border-color:var(--teacher-primary,#2f7bff);color:#fff}.ControlPanel-module__E7Sf_G__submitButton:hover:not(:disabled){opacity:.9;box-shadow:0 4px 12px #2f7bff33}.ControlPanel-module__E7Sf_G__secondaryButton{color:var(--teacher-text-secondary,#4e5969);background-color:#f7f8fa}.ControlPanel-module__E7Sf_G__secondaryButton:hover:not(:disabled){background-color:#e5e7eb}.ControlPanel-module__E7Sf_G__navButton:disabled,.ControlPanel-module__E7Sf_G__submitButton:disabled,.ControlPanel-module__E7Sf_G__secondaryButton:disabled{opacity:.6;cursor:not-allowed}