*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: var(--step-0);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p { margin: 0; }
h1 { font-size: var(--step-2); line-height: 1.2; font-weight: 600; letter-spacing: -0.01em; }
h2 { font-size: var(--step-1); line-height: 1.3; font-weight: 600; }
h3 { font-size: var(--step-0); line-height: 1.4; font-weight: 600; }

a { color: var(--stamp); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

:focus-visible { outline: none; box-shadow: var(--focus); border-radius: var(--radius-s); }

code, .data { font-family: var(--font-data); font-size: 0.875em; }

.sr-only {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.muted { color: var(--ink-mute); }
.stack > * + * { margin-top: var(--stack-gap, 1rem); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}