h2{letter-spacing:1px}
.bar{
  width:min(520px, 80vw); height:14px; border-radius:999px; overflow:hidden;
  border:1px solid rgba(0,217,255,.6); position:relative; background:rgba(0,217,255,.06);
  box-shadow:inset 0 0 12px rgba(0,217,255,0.12);
}
.fill{
  width:0%; height:100%; background:linear-gradient(90deg, var(--accent), #7cf3ff);
  box-shadow:0 0 20px rgba(0,217,255,.45);
  transition:width .12s ease;
}
body{pointer-events:none} /* 禁止操作 */