:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --text: #1c1d22;
  --muted: #5d606b;
  --line: #e3e4e8;
  --accent: #0b6bcb;
  --card: #f5f6f8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111318;
    --text: #e8e9ed;
    --muted: #a2a5b0;
    --line: #2a2d35;
    --accent: #6cb4ff;
    --card: #1a1d24;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

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

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

header.top {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}

header.top .brand { font-weight: 700; color: var(--text); text-decoration: none; }

nav.lang a, nav.pages a { margin-right: 12px; }

h1 { font-size: 1.75rem; line-height: 1.25; margin: 28px 0 4px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
h3 { font-size: 1rem; margin: 20px 0 4px; }

p, ul { margin: 0 0 12px; }
ul { padding-left: 22px; }
li { margin-bottom: 4px; }

a { color: var(--accent); overflow-wrap: anywhere; }

.meta { color: var(--muted); font-size: 0.9rem; margin-bottom: 20px; }

.box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  margin: 16px 0;
}

.box ul { margin-bottom: 0; }

hr.lang-split {
  border: 0;
  border-top: 2px solid var(--line);
  margin: 56px 0 8px;
}

footer {
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--line);
  margin-top: 48px;
  padding-top: 16px;
}

.box p:last-child { margin-bottom: 0; }

.back { margin-top: 28px; }