:root {
  --text: #1f2933;
  --muted: #52606d;
  --bg: #f8fafc;
  --surface: #ffffff;
  --accent: #c00;
  --border: #d9e2ec;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

.content {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 16px 40px;
}

article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

.page-tools {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1rem;
}

.language-switcher {
  font-size: 0.875rem;
  color: var(--muted);
}

.language-switcher strong {
  color: var(--text);
}

.page-links {
  text-align: center;
  margin-top: 1.5rem;
  margin-bottom: 0;
}

h1,
h2,
h3 {
  line-height: 1.25;
  margin-top: 0;
  color: var(--accent);
}

h1 {
  font-size: 1.65rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.3rem;
  margin: 1.5rem 0 0.75rem;
}

h3 {
  font-size: 1.1rem;
  margin: 1.25rem 0 0.65rem;
}

p {
  margin: 0 0 1rem;
}

strong {
  color: #102a43;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

em {
  color: var(--muted);
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .content {
    padding: 14px 10px 24px;
  }

  article {
    padding: 14px;
    border-radius: 8px;
  }

  .page-tools {
    margin-bottom: 0.75rem;
  }

  h1 {
    font-size: 1.35rem;
  }
}