:root{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#17213b;background:#f4f6fa}*{box-sizing:border-box}body{margin:0}header{background:#142c54;color:white;padding:28px 16px;text-align:center}header h1{font-size:clamp(23px,4vw,34px);margin:0 0 5px;letter-spacing:.06em}header p{margin:0;color:#d7e4f7}main{max-width:900px;margin:25px auto;padding:0 14px}.panel{background:white;border-radius:17px;box-shadow:0 4px 20px #15234312;padding:24px;margin-bottom:18px}h2{font-size:19px}label{display:block;font-weight:600;margin:14px 0 7px}input,select{display:block;width:100%;font:inherit;margin-top:7px;padding:12px;border:1px solid #ced6e5;border-radius:9px}button{font:inherit;cursor:pointer;background:#2356a4;color:#fff;border:0;border-radius:9px;padding:11px 15px}button:disabled{opacity:.45;cursor:not-allowed}button.ghost{background:#e9eff8;color:#1b3c72}.subtle,footer{color:#617189;font-size:14px}.chapters{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin:14px 0}.chapter{border:1px solid #dae2ee;border-radius:10px;padding:12px}.chapter strong{display:block}.state{font-size:12px;margin:8px 0}.state.open{color:#17693a}.state.lock{color:#9a4a2a}.chapter button{width:100%}.bar{display:flex;align-items:center;justify-content:space-between;gap:15px}.notice{background:#fff4d7;padding:12px;border-radius:8px;font-size:14px}.hidden{display:none!important}.question{border:1px solid #e0e7ef;border-radius:10px;padding:15px;margin:15px 0}.question label{font-weight:400;border-radius:7px;border:1px solid #e6eaf1;padding:9px}.question input{display:inline;width:auto;margin:0 7px 0 0}.attempts{overflow-wrap:anywhere}.attempt{padding:10px;border-bottom:1px solid #e8eaf0}footer{text-align:center;padding:20px}#message,#loginMsg,#statusMsg,#result{min-height:20px}@media(max-width:550px){.panel{padding:16px}.bar{align-items:flex-start;flex-direction:column}}

.question audio{display:block;width:100%;max-width:450px;margin:12px 0}.question strong{line-height:1.6;display:block}.question label{cursor:pointer}

.question-image{display:block;max-width:100%;max-height:310px;object-fit:contain;margin:14px 0;border:1px solid #dce4ef;border-radius:8px;background:white}

.media-warning{color:#a03728;background:#fff0eb;padding:10px;border-radius:8px}.question-image{max-height:480px;width:auto;max-width:100%}#saveStatus{font-weight:600}

.source-document{margin:16px 0 28px;padding:16px;border:1px solid #c9d4e4;border-radius:12px;background:#f5f8fc}
.source-page{display:block;width:100%;height:auto;max-width:100%;margin:16px auto 26px;border:1px solid #d2d2d2;background:#fff;}
.source-document audio{max-width:100%;display:block;margin:8px 0 16px}

.question-crop{position:relative;overflow:hidden;border:1px solid #c4d2e6;border-radius:8px;max-width:100%;margin:12px 0;background:#fff}
.question-crop img{width:100%;height:auto;display:block;position:absolute;left:0}