Update index.html

index.html

@@ -927,7 +927,7 @@ document.getElementById('sw-register-btn').addEventListener('click', async () =>
                     </div>
                     <div class="speed-control">
                         <span class="speed-value" id="speed-value">1.00x</span>
-                        <input type="range" class="speed-slider" id="speed-slider" min="0.5" max="2" step="0.01" value="1" disabled>
+                        <input type="range" class="speed-slider" id="speed-slider" min="0.01" max="5" step="0.01" value="1" disabled>
                     </div>
                     <button class="control-button fullscreen-button" id="fullscreen-btn" disabled>⛶</button>
                 </div>
@@ -966,13 +966,13 @@ document.getElementById('sw-register-btn').addEventListener('click', async () =>
             </div>
             <div class="setting-item">
                 <label for="tempo">テンポ (BPM):</label>
-                <input type="number" id="tempo" min="40" max="200" value="92" step="1">
+                <input type="number" id="tempo" min="40" max="200" value="92" step="0.1">
                 <span id="tempo-speed-value">1.00x</span>
             </div>
             <div class="setting-item">
                 <div class="playback-speed-container">
                     <label>再生速度:</label>
-                    <input type="range" class="playback-speed-slider" id="playback-speed" min="0.01" max="5" step="0.01" value="1" disabled>
+                    <input type="range" class="playback-speed-slider" id="playback-speed" min="0.01" max="5" step="0.001" value="1" disabled>
                     <span class="slider-value" id="playback-speed-value">1.00x</span>
                 </div>
             </div>
@@ -1862,7 +1862,7 @@ document.addEventListener('visibilitychange', async () => {
         const baseTempo = isTMode ? 66 : 92;
         const speed = tempo / baseTempo;
         
-        const clampedSpeed = Math.max(0.01, Math.min(5.0, speed));
+        const clampedSpeed = Math.max(0.001, Math.min(5.0, speed));
         
         playbackSpeedSlider.value = clampedSpeed;
         playbackSpeedValue.textContent = clampedSpeed.toFixed(2) + 'x';