Update index.html

index.html

@@ -1177,10 +1177,11 @@ window.addEventListener('load', async () => {
 
 <script>
 document.addEventListener('DOMContentLoaded', function() {
+const urlParams = new URLSearchParams(window.location.search);
 // メトロノーム関連のグローバル変数
 let metronomeState = {
   isActive: false,
-  bpm: 120
+  bpm: urlParams.get('mode') === 't' ? 66 : 92
 };
 
 // メトロノームのタイムライン
@@ -1255,12 +1256,12 @@ function setTempoFromBPM() {
   const bpmInput = document.getElementById('bpmInput');
   let bpm = parseInt(bpmInput.value);
   
-  if (isNaN(bpm)) bpm = 120;
-  bpm = Math.max(40, Math.min(bpm, 240));
+  if (isNaN(bpm)) bpm = 60;
+  bpm = Math.max(0, Math.min(bpm, 10000));
   bpmInput.value = bpm;
   metronomeState.bpm = bpm;
   
-  const tempoLevel = Math.round(gsap.utils.mapRange(40, 240, 1, 10, bpm));
+  const tempoLevel = Math.round(gsap.utils.mapRange(0, 10000, 1, 10, bpm));
   gsap.set('#lvl', { 
     attr: { 'stroke-dasharray': tempoLevel * 10 + ' ' + (100 - tempoLevel * 10) } 
   });