:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --text: #1c2430;
  --muted: #5b6676;
  --border: #e3e8ef;
  --brand: #3a94e6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11151b;
    --surface: #1a2029;
    --text: #e8edf3;
    --muted: #9aa6b5;
    --border: #2a323d;
    --brand: #5aa8ee;
  }
}

* {
  box-sizing: border-box;
}

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

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

header img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
}

h1 {
  font-size: 28px;
  line-height: 1.2;
  margin: 0;
}

h2 {
  font-size: 20px;
  margin: 40px 0 8px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

h3 {
  font-size: 16px;
  margin: 24px 0 4px;
}

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

.langs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 8px;
}

.langs a {
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  text-decoration: none;
  font-size: 14px;
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

footer {
  margin-top: 48px;
  color: var(--muted);
  font-size: 14px;
}