:root {
  color-scheme: light;
  --bg: #ffffff;
  --text: #121212;
  --muted: #60646c;
  --surface: #f6f8fa;
  --border: #e5e7eb;
  --accent: #4f46e5;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

main {
  max-width: 820px;
  margin: 0 auto;
  padding: 40px 20px 56px;
  line-height: 1.62;
}

h1,
h2,
h3 {
  line-height: 1.28;
  margin: 0;
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.45rem;
}

h2 {
  margin-top: 2rem;
  font-size: 1.2rem;
}

p,
ul {
  margin-top: 0.8rem;
}

ul {
  padding-left: 1.2rem;
}

li + li {
  margin-top: 0.35rem;
}

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

a:hover {
  text-decoration: underline;
}

.meta {
  color: var(--muted);
  margin-bottom: 1.4rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}