:root {
  color-scheme: light;
  --bg: #f6f6f7;
  --surface: #ffffff;
  --text: #202223;
  --muted: #5c5f62;
  --border: #dfe3e8;
  --accent: #005bd3;
  --accent-soft: #edf4ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.hero,
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.hero {
  padding: 32px;
  margin-bottom: 20px;
}

.hero h1,
.card h1,
.card h2,
.card h3 {
  margin-top: 0;
  line-height: 1.2;
}

.hero p,
.card p,
.card li {
  color: var(--muted);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.nav a {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.nav a.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.card {
  padding: 24px;
}

.note {
  margin-top: 16px;
  padding: 14px 16px;
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  color: var(--text);
}

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

ul,
ol {
  padding-left: 20px;
}

code {
  padding: 1px 6px;
  border-radius: 6px;
  background: #f1f2f3;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
  display: inline;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

@media (max-width: 640px) {
  .hero,
  .card {
    padding: 20px;
  }
}