:root {
  --primary: #0066ff;
  --dark: #0a0f1e;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #f8fafc;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
a { color: var(--primary); }
header {
  background: var(--dark);
  color: #fff;
  padding: 1.25rem 1.5rem;
}
.bar {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.brand {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
}
.langs { display: flex; gap: 0.4rem; }
.lang-btn {
  background: transparent;
  color: rgba(255,255,255,0.75);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 8px;
  padding: 0.25rem 0.55rem;
  cursor: pointer;
  font-weight: 600;
}
.lang-btn.active { background: #fff; color: var(--dark); }
main {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}
article h1 { font-size: 1.8rem; line-height: 1.25; margin: 0 0 0.35rem; }
.updated { color: var(--muted); font-size: 0.9rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.15rem; margin: 1.6rem 0 0.4rem; }
p, li { font-size: 0.98rem; }
ul { padding-left: 1.2rem; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; margin: 0.75rem 0 1rem; }
th, td { border: 1px solid var(--line); padding: 0.55rem 0.65rem; text-align: left; vertical-align: top; }
th { background: #eef2ff; }
footer {
  border-top: 1px solid var(--line);
  padding: 1.25rem 1.5rem 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.foot {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}
.note {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  margin: 1rem 0 1.25rem;
}