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auto}.learn-top{display:flex;align-items:center;gap:12px;margin-bottom:10px}.learn-topic{font-size:13px;color:var(--muted);font-weight:600;flex:1;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.learn-count{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}.progress-bar.slim{height:4px}.learn-focus .prompt,.exam-focus .prompt{font-size:20px;line-height:1.4;margin:6px 0 14px}.learn-focus .option,.exam-focus .option{padding:14px 16px;font-size:16px;border-radius:12px}.learn-focus .grades{gap:8px}.learn-focus .grades .btn{flex:1;padding:12px 0}.exam-bar{display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:10;padding:10px 0;background:var(--bg, var(--surface))}.exam-title{font-size:15px;font-weight:700}.exam-timer{font-size:15px;font-weight:700;padding:4px 10px;border-radius:8px;background:var(--surface-2, rgba(127,127,127,.1))}.exam-timer.urgent{background:#ef444426;color:#ef4444}