:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: #dbe3ef;
  --brand: #0a66c2;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, #f3f7ff 0%, #f8fafc 100%);
  color: var(--text);
  font-family: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 860px;
  margin: 32px auto;
  padding: 0 16px 40px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

h1 {
  margin: 0 0 12px;
  line-height: 1.2;
}

h2 {
  margin-top: 28px;
  margin-bottom: 8px;
  line-height: 1.3;
}

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

ul {
  margin-top: 8px;
}

.meta {
  color: var(--muted);
  margin: 2px 0;
}

.lang-nav {
  margin: 12px 0 18px;
}

.lang-nav a {
  color: var(--brand);
  text-decoration: none;
  margin-right: 12px;
}

.lang-nav a:hover {
  text-decoration: underline;
}

.page-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  text-decoration: none;
  color: var(--text);
  background: #f9fbff;
}

.pill:hover {
  border-color: #bfd3ec;
  background: #f2f7ff;
}

code {
  background: #eff4fb;
  border: 1px solid #d8e4f3;
  border-radius: 6px;
  padding: 2px 6px;
}

footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 640px) {
  .wrap {
    margin-top: 16px;
  }

  .card {
    padding: 18px;
    border-radius: 12px;
  }
}