:root {
  --bg: red;
  --card: white;
  --accent: white;
  --muted: blue;
}

html, body {
  height: 100%;
}
body {
  background: var(--bg);
  color: red;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

.card {
  background: var(--card);
  border: 1px solid #20244a;
  border-radius: 1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .25);
}

.btn-go {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 3px solid red;
  background: transparent;
  color: red;
  font-size: 42px;
  font-weight: 700;
  transition: .2s transform;
}
.btn-go:hover {
  transform: scale(1.03);
}

.small-label {
  color: red;
  font-size: .9rem;
}
.value-xxl {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
}
@media (min-width: 768px) {
  .value-xxl {
    font-size: 3rem;
  }
}

.speedometer-wrap {
  width: 100%;
  max-width: 400px;
  height: auto;
  margin: auto;
}
canvas#speedometer {
  width: 100% !important;
  height: auto !important;
  display: block;
}

.footer-note {
  color:red;
  font-size: .85rem;
}