body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; margin: 24px; }
h2, h3 { margin-bottom: 12px; }
.controls, .whisper { margin-bottom: 16px; }
.row { margin: 8px 0; display: flex; gap: 8px; align-items: center; }
label { min-width: 140px; }
.hint { color: #666; font-size: 12px; }
.text-block { margin: 12px 0; }
.buttons { margin: 12px 0; display: flex; gap: 8px; }
audio { margin-top: 8px; width: 100%; max-width: 600px; }
CSS