/* 白噪音生成器 */
.wn-stage{display:flex;flex-direction:column;align-items:center;gap:.75rem;padding:1.5rem 1rem 1.25rem;
  border:1px solid #eef1f5;border-radius:.7rem;background:radial-gradient(120% 100% at 50% 0%,#f5f3ff 0%,#fdfdff 60%,#fff 100%)}
.wn-visual{display:flex;align-items:flex-end;gap:.25rem;height:3rem}
.wn-visual span{display:block;width:.35rem;height:20%;border-radius:.2rem;background:var(--site-primary);opacity:.35}
.wn-visual.is-on span{animation:wn-bounce 1.1s ease-in-out infinite}
.wn-visual.is-on span:nth-child(2){animation-delay:.15s}
.wn-visual.is-on span:nth-child(3){animation-delay:.3s}
.wn-visual.is-on span:nth-child(4){animation-delay:.45s}
.wn-visual.is-on span:nth-child(5){animation-delay:.6s}
@keyframes wn-bounce{0%,100%{height:18%;opacity:.35}50%{height:100%;opacity:.9}}
.wn-state{color:#6b7280;font-size:.875rem;font-variant-numeric:tabular-nums}
.wn-sound.is-on{border-color:var(--site-primary);color:var(--site-primary);background:rgba(var(--site-primary-rgb),.08)}