.mvp-voice{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:12px 0;color:#8495b0;font-size:12px;min-height:24px}.mvp-voice .text-link{font-size:13px;color:#6484bf}.mvp-voice #voice-status{font-size:12px;line-height:1.5}.mvp-answer-summary{padding:14px 16px;background:#f2f6ff;border-radius:12px;margin-top:19px}.mvp-answer-summary p{font-size:16px;line-height:1.7;margin:6px 0;overflow-wrap:anywhere}.mvp-answer-summary .text-link{font-size:12px;color:#7189b3}.mvp-question .mvp-feedback{margin-top:20px;padding-top:18px}.mvp-next{margin-top:18px}.floating-companion.speaking .companion-bubble{border-color:#9dbaf7;box-shadow:0 8px 28px #3465e916}.floating-companion.speaking .companion-label:after{content:' · 正在说话';font-size:11px;font-weight:400}
@media(min-width:1100px) and (min-height:640px){
 body.classroom-mode{--class-header:66px;--companion-width:228px;--companion-gap:30px}
 .classroom-mode .child-header{height:var(--class-header);min-height:0;padding:0 30px}
 .classroom-mode .child-shell{min-height:100dvh}
 .classroom-mode .child-main{height:calc(100dvh - var(--class-header));max-width:none;margin:0 calc(var(--companion-width) + var(--companion-gap) + 22px) 0 30px;padding:18px 0 18px;display:flex;flex-direction:column;min-height:0}
 .classroom-mode .classroom-head{flex-shrink:0;min-height:48px;margin:0 0 16px}
 .classroom-mode .classroom-head h2{font-size:22px}.classroom-mode .classroom-head p{font-size:12px}
 .classroom-mode .mvp-layout{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(320px,1fr);gap:22px;align-items:stretch}
 .classroom-mode .mvp-layout>div{min-height:0;display:flex;flex-direction:column}
 .classroom-mode .mvp-video{flex:1;min-height:0;border-radius:18px}
 .classroom-mode .mvp-video video{height:100%;width:100%;aspect-ratio:auto;object-fit:contain}
 .classroom-mode .mvp-story-title{flex-shrink:0;margin:12px 0;min-height:43px}
 .classroom-mode .mvp-story-title p{font-size:12px}.classroom-mode .mvp-story-title h3{font-size:17px}
 .classroom-mode .mvp-steps{flex-shrink:0;padding:11px 14px;margin:0;gap:18px;font-size:13px}
 .classroom-mode #video-message{flex-shrink:0;margin-top:9px;font-size:12px;line-height:1.6}
 .classroom-mode .class-note,.classroom-mode .child-footer{display:none}
 .classroom-mode .mvp-question{min-height:0;height:100%;align-self:stretch;display:flex;flex-direction:column;padding:22px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#d0dbec transparent}
 .classroom-mode .mvp-question>.eyebrow{margin-bottom:10px;font-size:13px;flex-shrink:0}
 .classroom-mode .mvp-question h2{font-size:20px;line-height:1.6;flex-shrink:0}
 .classroom-mode .mvp-question .answer-option{padding:9px 12px;margin-bottom:8px;min-height:45px;flex-shrink:0;font-size:15px}
 .classroom-mode .mvp-question>p.small{margin:5px 0 14px!important;font-size:12px}
 .classroom-mode .mvp-question form{margin-top:10px;flex-shrink:0}
 .classroom-mode .mvp-question textarea{min-height:52px;height:60px;margin:7px 0 10px;padding:9px 12px;font-size:15px;resize:vertical;max-height:110px}
 .classroom-mode .mvp-question .btn{min-height:40px;padding:9px 14px}
 .classroom-mode .mvp-question .mvp-next{margin-top:auto;flex-shrink:0}
 .classroom-mode .mvp-question .mvp-feedback{border-top:0;margin-top:15px;padding-top:0;flex:1}
 .classroom-mode .mvp-feedback p{font-size:16px;line-height:1.9;margin:8px 0 12px;overflow-wrap:anywhere}
 .classroom-mode .mvp-voice{margin:9px 0;flex-shrink:0}.classroom-mode .mvp-answer-summary{margin-top:16px;flex-shrink:0}
 .classroom-mode .mvp-wait{margin:auto 0;padding:15px 0}.classroom-mode .mvp-complete{margin:4px 0 20px}.classroom-mode .mvp-complete>svg{height:35px;width:35px;margin-bottom:10px}.classroom-mode .mvp-recap>div{margin-bottom:12px;padding:10px 12px}
 .classroom-mode .floating-companion{right:22px;bottom:22px;width:var(--companion-width);max-height:calc(100dvh - 90px)}
 .classroom-mode .companion-stage{height:clamp(160px,28vh,269px)}.classroom-mode .companion-robot{width:clamp(103px,17vh,163px)}.classroom-mode .companion-robot img{height:clamp(145px,26vh,249px)}
 .classroom-mode .companion-bubble p{font-size:16px;line-height:1.85;max-height:calc(100dvh - 420px);overflow-y:auto;scrollbar-width:thin}.classroom-mode .companion-caption{font-size:12px}
 .classroom-mode .floating-companion.compact{width:90px}.classroom-mode .compact .companion-stage{height:140px}.classroom-mode .compact .companion-robot{width:82px}.classroom-mode .compact .companion-robot img{height:125px}
}
@media(min-width:1100px) and (max-width:1300px) and (min-height:640px){.classroom-mode{--companion-width:185px;--companion-gap:18px}.classroom-mode .child-main{margin-left:22px}.classroom-mode .mvp-layout{gap:15px;grid-template-columns:minmax(0,1.15fr) minmax(315px,1fr)}.classroom-mode .mvp-question{padding:18px}.classroom-mode .companion-bubble{padding:12px 14px}.classroom-mode .companion-bubble p{font-size:15px}.classroom-mode .mvp-steps{gap:12px;font-size:12px}}
@media(max-width:760px){.mvp-voice{flex-wrap:wrap}.mvp-answer-summary p{font-size:15px}.mvp-question .mvp-feedback p{font-size:16px}}