:root{
  --rail-global: 1180px;
  --rail-reading: 720px;
  --rail-pad: 16px;
}

/* container real do sistema */
.rail-global{
  max-width: var(--rail-global);
  margin: 0 auto;
  padding: 0 var(--rail-pad);
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: #222;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}