*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 {
  font-family: var(--font-heading);
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.01em;
}
p { margin: 0; }
button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}
button:disabled { cursor: not-allowed; opacity: 0.5; }