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.intro-cta{display:inline-block;background:#246b78;color:#fff;text-decoration:none;padding:13px 18px;border-radius:11px;font-weight:750;margin-top:16px}
.ai-unavailable{background:#fff7e8;border:1px solid #f0dfbb;border-radius:10px;padding:12px 15px;font-size:13px;color:#805f36!important}
/* Свободная навигация и работа на время */
.sidebar{position:sticky;top:0;height:calc(100vh - 76px);align-self:start}.practice-navigation{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:18px}.skip-button{margin-top:24px}.topic-actions{display:flex;align-items:center;gap:12px}.topic-row>div:first-child{min-width:0}.exam-toolbar{display:flex;gap:14px;align-items:center;flex-wrap:wrap;position:sticky;top:0;z-index:2;background:#f6f8fa;padding:14px 0}.exam-timer{font-size:25px;font-variant-numeric:tabular-nums;font-weight:800;color:#246b78}.exam-timer.urgent{color:#ad4242}.exam-number-grid{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:7px;margin:22px 0}.exam-number-grid button{padding:11px 0;min-width:0}.exam-number-grid .answered{background:#e4f5e9}.exam-number-grid .current{outline:3px solid #246b78;outline-offset:1px}.exam-answer{display:block;width:100%;border:1px solid #b9ccd1;padding:14px;border-radius:10px;margin:12px 0 20px;font:inherit;line-height:1.6}.exam-controls{display:flex;gap:10px;justify-content:space-between;flex-wrap:wrap}.exam-result{background:#fff;border:1px solid #dfe8ec;border-radius:14px;padding:22px;margin-top:18px}.exam-result p{white-space:pre-wrap;line-height:1.65}.exam-result summary{cursor:pointer;color:#246b78;margin-top:15px}.correct-text{color:#28784e}.wrong-text{color:#a35e37}.student-answer{background:#f3f7f8;border-radius:8px;padding:12px}.exam-intro-numbers{font-size:23px;color:#246b78;font-weight:750}.small-note{font-size:13px;line-height:1.6;color:#687b86}.question-prompt{white-space:pre-wrap}.sidebar-bottom summary{cursor:pointer}.intro-panel .small-note{margin-top:20px;padding-top:0}
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.video-links{display:grid;gap:12px;margin:14px 0 22px}.video-links a{color:#246b78;text-decoration:none;font-weight:700;line-height:1.5;display:block}.video-links a:hover{text-decoration:underline}.video-links small{display:block;color:#788b96;margin-top:4px;line-height:1.5}.video-section{margin-top:24px;padding-top:18px;border-top:1px solid #e8edef}.topic-row details{margin-top:12px}.topic-row summary{cursor:pointer;color:#246b78;font-size:13px;font-weight:700}.finish-confirm{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.finish-confirm strong{flex-basis:100%}#videoBtn{margin-bottom:22px}
/* Каталог обеих частей и развёрнутые решения */
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.history-card{background:#fff;border:1px solid #e3e9ed;border-radius:13px;overflow:hidden}.history-card .history-row{border:0}.history-row>div{min-width:0}.history-row small{white-space:pre-wrap;overflow-wrap:anywhere}.history-card>details{padding:17px 20px;border-top:1px solid #e7eef0}.history-card summary{cursor:pointer;color:#246b78;font-weight:650}.history-card details p{white-space:pre-wrap;line-height:1.7}.feedback-section{margin-top:25px;color:#5f7781;font-size:13px}.feedback-section summary{cursor:pointer}.feedback-section textarea{display:block;width:100%;font:inherit;padding:12px;border:1px solid #cbdcde;border-radius:10px;margin:12px 0}.feedback-section form{max-width:650px}
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