* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: #0f172a;
  background: #ffffff;
  line-height: 1.6;
}

.site-main {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}