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8px;display:flex}.tempo-picker__nudge{color:#94a3b8;cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:none;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;transition:color .1s,background .1s;display:flex}.tempo-picker__nudge:active{color:var(--accent);background:var(--accent-light)}.tempo-picker__nudge:disabled{opacity:.35;cursor:default}.tempo-picker__ribbon{cursor:grab;flex:1;justify-content:center;align-items:center;height:100%;display:flex;position:relative;overflow:hidden}.tempo-picker__ribbon:active{cursor:grabbing}.tempo-picker__ribbon:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;border-radius:8px}.tempo-picker__center-indicator{pointer-events:none;border-left:1px dashed #cbd5e1;border-right:1px dashed #cbd5e1;width:52px;position:absolute;top:10%;bottom:10%;left:50%;transform:translate(-50%)}.tempo-picker__slot{text-align:center;font-variant-numeric:tabular-nums;color:#94a3b8;width:56px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;transition:color .1s,font-size .1s,opacity .1s}.tempo-picker__slot--d0{color:#1a1a1a;opacity:1;font-size:30px;font-weight:600}.tempo-picker__slot--d1{opacity:.75;font-size:20px}.tempo-picker__slot--d2{opacity:.5;font-size:18px}.lesson-btn{border:1px solid var(--accent);background:var(--accent-light);width:44px;height:44px;color:var(--accent);cursor:pointer;-webkit-tap-highlight-color:transparent;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:20px;font-weight:700;text-decoration:none;animation:2.4s ease-in-out infinite lesson-pulse;display:flex}@keyframes lesson-pulse{0%,to{box-shadow:0 0 #2563eb73}50%{box-shadow:0 0 0 6px #2563eb00}}@media 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var(--border);background:#fff;border-radius:14px;width:100%;position:relative;overflow:hidden}.lesson-video{object-fit:contain;width:100%;height:100%;display:block;position:absolute;inset:0}.lesson-desc{color:var(--text);margin:0;font-size:15px;line-height:1.5}.lesson-tip{color:#92400e;background:#fef3c7;border:1px solid #fcd34d;border-radius:10px;margin:10px 0 0;padding:10px 12px;font-size:14px;line-height:1.45}