:root {
  color-scheme: light dark;

  --bg: #ffffff;
  --fg: #111111;
  --muted: #606770;
  --border: #d0d7de;
  --card: #f6f8fa;
  --link: #0969da;
  --code-bg: #f6f8fa;

  --radius: 10px;
  --container: 980px;
  --mono: ui-monospace, SFMono-Regular, SF Mono, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d10;
    --fg: #e6e6e6;
    --muted: #9aa4af;
    --border: #30363d;
    --card: #11151b;
    --link: #58a6ff;
    --code-bg: #11151b;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

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

a:hover {
  text-decoration: underline;
}

code,
pre {
  font-family: var(--mono);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg), var(--card) 35%);
}

.site-header .container {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
}

.site-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.site-title a {
  font-weight: 700;
  color: var(--fg);
}

.site-tagline {
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--muted);
}

.site-nav a:hover {
  color: var(--fg);
}

.hero {
  padding: 28px 0 8px;
}

.hero h1 {
  margin: 0 0 6px;
  font-size: 2.1rem;
}

.hero p {
  margin: 0;
  color: var(--muted);
}

.toc {
  padding: 18px 0 24px;
}

.toc ul {
  padding-left: 18px;
  margin: 8px 0 0;
}

.cheat-section {
  padding: 18px 0 26px;
}

.cheat-section h2 {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.cheat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 860px) {
  .cheat-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.cheat-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.cheat-card__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 12px 0;
}

.cheat-card__header h3 {
  margin: 0;
  font-size: 1.05rem;
}

.cheat-card__meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.cheat-card__body {
  padding: 12px;
}

pre {
  margin: 0;
  padding: 12px;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  overflow: auto;
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 26px;
  padding: 18px 0 28px;
  color: var(--muted);
}