@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

:root {
  --background: #ffffff;
  --foreground: #0a0a0a;
  --muted: #f4f4f5;
  --muted-foreground: #71717a;
  --border: #e4e4e7;
  --radius: 0.5rem;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--background);
  color: var(--foreground);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--foreground);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.logo:hover {
  opacity: 0.8;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.025em;
}

.subtitle {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  letter-spacing: -0.025em;
}

p {
  margin-bottom: 1rem;
  color: var(--foreground);
}

ul, ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

.card {
  background: var(--muted);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.card-title {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

footer a {
  color: var(--muted-foreground);
  text-decoration: none;
}

footer a:hover {
  color: var(--foreground);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

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

a:hover {
  opacity: 0.8;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  background: var(--foreground);
  color: var(--background);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

@media (max-width: 640px) {
  .container {
    padding: 2rem 1rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.125rem;
  }
}