body {
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 1rem;
  max-width: 480px;
  margin-inline: auto;
}
button { font-size: 1.1rem; padding: 0.6rem 1rem; margin: 0.3rem 0; }
input, select { font-size: 1.1rem; padding: 0.5rem; width: 100%; margin-bottom: 0.8rem; }
.error { color: #c00; }
.link { background: none; border: none; color: #1a73e8; padding: 0; }
.meter-card {
  display: block;
  width: 100%;
  text-align: left;
  padding: 1rem;
  margin-bottom: 0.6rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  background: #fafafa;
}
table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
th, td { border-bottom: 1px solid #eee; padding: 0.4rem; text-align: left; }