.u-grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(clamp(280px, 30vw, 360px), 1fr));
  gap: var(--space-md);
}

.u-surface {
  background: var(--color-surface);
}

.u-surface-card {
  padding: var(--space-md);
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.u-center {
  text-align: center;
}

.u-muted {
  color: var(--color-text-soft);
}

.u-visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}