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

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --code-bg: #1c2128;
  --green: #3fb950;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

header {
  padding: 4rem 0 2rem;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

main {
  flex: 1;
  padding-bottom: 4rem;
}

section {
  margin-top: 3rem;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--accent);
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

p {
  color: var(--text-muted);
  max-width: 65ch;
}

.hero p {
  font-size: 1.1rem;
  line-height: 1.7;
}

strong {
  color: var(--text);
}

code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.875em;
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: var(--accent);
}

pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  line-height: 1.5;
}

pre code {
  background: none;
  padding: 0;
  font-size: 0.85rem;
  color: var(--text);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  transition: border-color 0.2s;
}

.card:hover {
  border-color: var(--accent);
}

.card h3 {
  color: var(--green);
}

.card p {
  font-size: 0.9rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td code {
  font-size: 0.8rem;
}

footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
}

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

footer a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

a {
  color: var(--accent);
}

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

@media (max-width: 600px) {
  header {
    padding: 2.5rem 0 1.5rem;
  }

  header h1 {
    font-size: 1.75rem;
  }

  .tagline {
    font-size: 1rem;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  table {
    font-size: 0.8rem;
  }

  th,
  td {
    padding: 0.5rem 0.75rem;
  }
}