*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #fafafa;
  --color-text: #111;
  --color-text-muted: #555;
  --color-border: #ddd;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

html {
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

main {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.header {
  padding: 3rem 0 0;
}

.logo {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 0;
}

h1 {
  font-size: 2.25rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.description {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.65;
  margin-bottom: 2.5rem;
}

.cta {
  display: inline-block;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.7rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  width: fit-content;
}

.cta:hover {
  border-color: var(--color-text);
}

.footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--color-border);
}

.footer p {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

@media (max-width: 480px) {
  html {
    font-size: 16px;
  }

  .header {
    padding: 2rem 0 0;
  }

  .hero {
    padding: 3rem 0;
  }

  h1 {
    font-size: 1.75rem;
  }
}