body{font-family:Arial,sans-serif;margin:0;background:#f3f6f8;color:#17212b}header{background:#102a43;color:white;padding:22px}h1{margin:0 0 6px;font-size:27px}.authors{font-weight:700;margin-bottom:14px}nav{display:flex;gap:7px;flex-wrap:wrap}button{padding:9px 12px;border:0;border-radius:7px;cursor:pointer;font-weight:700}main{max-width:1050px;margin:auto;padding:20px}.page{display:none}.page.active{display:block}.card{background:white;border-radius:12px;padding:18px;margin:0 0 15px;box-shadow:0 1px 5px #0001}.tip{padding:12px;background:#eef5f8;border-left:4px solid #486b80;margin:10px 0}.audioBox{padding:12px;background:#f7fafc;border:1px solid #d7e1e8;border-radius:9px;margin:10px 0}.q{padding:9px 0;border-bottom:1px solid #e5e9ed}.q input,.q select{padding:8px;margin-top:5px;min-width:240px}.correct{background:#eaf7ee}.wrong{background:#fff0f0}.transcript{white-space:pre-line;line-height:1.65;background:#fafafa;padding:14px;border-radius:8px}.pill{display:inline-block;padding:4px 8px;background:#e8eff4;border-radius:20px;font-size:12px;font-weight:bold}.timer{font-size:22px;font-weight:bold}.bankgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.bankitem{background:white;padding:14px;border-radius:9px}@media(max-width:700px){.bankgrid{grid-template-columns:1fr}.q input,.q select{min-width:0;width:95%}}
.audioBox .stopAudio{margin-left:8px}

.labfeedback{margin-top:6px;font-size:14px}.sectionControls{margin-top:15px;padding-top:12px;border-top:1px solid #dde5ea}.sectionControls span{margin-left:10px;font-weight:700}

.bankProItem{border-top:1px solid #e0e7ec;padding:13px 0}.bankProItem h4{margin:0 0 6px}.bankProItem button{margin:4px}.dictation{margin-top:8px}.dictation input{padding:8px;width:55%;min-width:250px}
@media(max-width:700px){.dictation input{width:94%;min-width:0}}

.visualCanvas{background:#f7fafc;border:1px solid #d8e2e8;border-radius:14px;padding:10px;margin:12px 0;overflow:auto}.visualCanvas svg{width:100%;max-width:820px;height:auto;display:block;margin:auto}.visualLab .q{margin:9px 0}