:root {
  color-scheme: light dark;
  --bg: #f7f8fb;
  --text: #16202a;
  --muted: #5f6b78;
  --card: #ffffff;
  --line: #dce2e8;
  --accent: #0a84ff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101316;
    --text: #eef3f8;
    --muted: #a9b3bd;
    --card: #171b20;
    --line: #2a323a;
    --accent: #5eb0ff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.page {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 20px 56px;
}

header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand strong {
  font-size: 20px;
}

.brand span,
.updated,
footer {
  color: var(--muted);
}

nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

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

nav a {
  text-decoration: none;
  font-weight: 600;
}

main {
  margin-top: 28px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.08;
}

h2 {
  margin: 32px 0 8px;
  font-size: 22px;
}

h3 {
  margin: 24px 0 8px;
  font-size: 18px;
}

p,
ul {
  margin: 10px 0;
}

ul {
  padding-left: 22px;
}

.updated {
  margin: 0 0 24px;
}

.language-block {
  padding-top: 18px;
  margin-top: 28px;
  border-top: 1px solid var(--line);
}

.contact {
  display: inline-flex;
  margin-top: 6px;
  padding: 10px 14px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  text-decoration: none;
  font-weight: 700;
}

footer {
  margin-top: 24px;
  font-size: 14px;
}

@media (max-width: 620px) {
  header {
    align-items: flex-start;
    flex-direction: column;
  }

  main {
    padding: 20px;
    border-radius: 10px;
  }
}