:root {
  color-scheme: light;
  --text: #111827;
  --muted: #5b6472;
  --line: #e5e7eb;
  --bg: #f8fafc;
  --panel: #ffffff;
  --link: #3347c8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Segoe UI", sans-serif;
}

a {
  color: var(--link);
  font-weight: 700;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.simple-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
}

.simple-card,
.doc {
  width: min(760px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.simple-card {
  padding: 36px;
}

h1 {
  margin: 0 0 12px;
  font-size: 40px;
  line-height: 1.15;
  letter-spacing: 0;
}

h2 {
  margin: 32px 0 10px;
  font-size: 22px;
  letter-spacing: 0;
}

p,
li {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
}

.simple-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.doc-page {
  max-width: 840px;
  margin: 0 auto;
  padding: 36px 20px 64px;
}

.doc {
  padding: 34px;
}

.top-link {
  margin: 0 0 18px;
}

@media (max-width: 520px) {
  .simple-card,
  .doc {
    padding: 24px;
  }

  h1 {
    font-size: 34px;
  }
}