/* ==========================================================================
   Base compartilhada — reset leve + tipografia + utilitários
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  font-size: var(--step-2);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg, video { display: block; max-width: 100%; }
button {
  font-family: inherit; font-size: inherit; cursor: pointer;
  border: none; background: none; color: inherit;
}
input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
a { color: inherit; text-decoration: none; cursor: pointer; }
h1, h2, h3, h4, h5, h6 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.01em; }
:focus-visible { outline: 2px solid var(--acc); outline-offset: 2px; border-radius: 3px; }

.tnum { font-variant-numeric: tabular-nums; }
.serif { font-family: var(--serif); }
.mono { font-family: var(--mono); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ---------- Banner de protótipo (topo global) ---------- */