:root {
  color-scheme: dark;
  --bg: #0f141c;
  --line: #2d3849;
  --text: #f5f7fb;
  --muted: #aeb7c7;
  --accent: #7be9ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #263142 0, var(--bg) 46%);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

main {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 54px;
}

header {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

h1,
h2 {
  line-height: 1.15;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(30px, 5vw, 48px);
}

h2 {
  margin: 28px 0 10px;
  font-size: 21px;
}

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

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

section {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(23, 30, 42, .78);
  margin-bottom: 14px;
}

ul {
  padding-left: 20px;
}

strong {
  color: var(--text);
}

.updated,
.language-switch {
  color: var(--accent);
  font-weight: 800;
}

.language-switch {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}