:root {
  --bg: #f5f6fa;
  --surface: #ffffff;
  --text: #17181d;
  --muted: #5c6070;
  --border: #e3e5ee;
  --accent: #7c4dff;
  --code-bg: #f0f1f7;
  --shadow: 0 1px 2px rgb(16 18 27 / 4%), 0 10px 30px rgb(16 18 27 / 6%);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101116;
    --surface: #171821;
    --text: #eceef5;
    --muted: #a2a7b8;
    --border: #262936;
    --accent: #a98cff;
    --code-bg: #1e2030;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 10px 30px rgb(0 0 0 / 25%);
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica,
    Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 20px 72px;
}

.page__header {
  margin-bottom: 32px;
}

.page__subtitle {
  margin: 4px 0 0;
  color: var(--muted);
}

.updated {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
}

h1 {
  margin: 0;
  font-size: 30px;
  letter-spacing: -0.02em;
}

h2 {
  margin: 36px 0 8px;
  font-size: 20px;
  letter-spacing: -0.01em;
}

h3 {
  margin: 24px 0 6px;
  font-size: 16px;
}

p {
  margin: 10px 0;
}

ul {
  margin: 10px 0;
  padding-left: 22px;
}

li {
  margin: 7px 0;
}

li::marker {
  color: var(--muted);
}

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

code {
  padding: 2px 6px;
  background: var(--code-bg);
  border-radius: 6px;
  font-size: 0.9em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.back {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

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

.cards {
  display: grid;
  gap: 14px;
}

.card {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: inherit;
  text-decoration: none;
  transition:
    transform 0.15s ease,
    border-color 0.15s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card__icon {
  font-size: 26px;
  line-height: 1;
}

.card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.card__title {
  font-weight: 600;
}

.card__text {
  color: var(--muted);
  font-size: 14px;
}

.card__arrow {
  color: var(--muted);
  font-size: 18px;
}

.page__footer {
  margin-top: 40px;
  color: var(--muted);
  font-size: 14px;
}