:root {
  color-scheme: light;
  --bg: #dfe7f1;
  --card: #ffffff;
  --ink: #1f2d46;
  --muted: #4a5d78;
  --line: #d1dbea;
  --accent: #293b57;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #d9e3ee 0%, var(--bg) 100%);
  color: var(--ink);
}

.wrap {
  width: 100%;
  max-width: 980px;
  margin: 40px auto 56px;
  padding: 0 18px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 28px 24px;
  background: var(--card);
}

.topnav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.navlinks {
  display: flex;
  align-items: center;
  gap: 14px;
}

.langswitch {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
}

.brand {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.back {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
}

h1 {
  margin: 8px 0 8px;
  font-size: clamp(1.7rem, 4vw, 2.2rem);
  letter-spacing: -0.02em;
}

h2 {
  margin: 1.7rem 0 0.7rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

p,
li {
  color: var(--muted);
  line-height: 1.62;
  font-size: 0.98rem;
}

ul {
  margin: 0.45rem 0 0.9rem 1.25rem;
  padding: 0;
}

.meta {
  margin: 0 0 1.1rem;
  font-size: 0.86rem;
  color: var(--muted);
}

.callout {
  border-left: 4px solid #c7d5e7;
  background: #f4f8fc;
  border-radius: 8px;
  padding: 12px 14px;
  margin: 12px 0;
}

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

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