:root {
  --carbon: #111827;
  --graphite: #6B7280;
  --white: #FAFAFA;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--white);
  color: var(--carbon);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 6rem 1.5rem 2rem;
}

.wordmark {
  font-weight: 300;
  font-size: 2rem;
  letter-spacing: 0.06em;
  color: var(--carbon);
  margin: 0 0 2.5rem;
  line-height: 1.2;
}

p {
  margin: 0 0 1.5rem;
  color: var(--carbon);
}

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

a:hover { color: var(--graphite); }

.product-link {
  font-weight: 400;
}

footer {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  font-size: 0.85rem;
  color: var(--graphite);
}

@media (max-width: 480px) {
  main { padding-top: 4rem; }
  .wordmark { font-size: 1.6rem; }
}