:root {
  color-scheme: dark;
  --bg: #0b0f14;
  --panel: #121923;
  --text: #eef4ff;
  --muted: #9eb0c4;
  --line: #243246;
  --accent: #77b7ff;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #0b0f14 0%, #0d131b 100%);
  color: var(--text);
  line-height: 1.6;
}
main { max-width: 900px; margin: 0 auto; padding: 48px 22px 72px; }
header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 22px;
  margin-bottom: 34px;
}
.brand { font-size: 28px; font-weight: 800; letter-spacing: .02em; }
.subtitle { color: var(--muted); margin-top: 6px; }
nav { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 12px; }
nav a, .button {
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 9px 13px;
  border-radius: 10px;
}
nav a:hover, .button:hover { border-color: var(--accent); }
section { margin: 30px 0; }
h1, h2, h3 { line-height: 1.25; }
h1 { font-size: 36px; margin: 0 0 10px; }
h2 { margin-top: 34px; }
a { color: var(--accent); }
.card {
  background: rgba(18,25,35,.85);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}
.note {
  border-left: 3px solid var(--accent);
  padding: 12px 16px;
  background: rgba(119,183,255,.08);
  border-radius: 8px;
}
.muted { color: var(--muted); }
footer {
  color: var(--muted);
  border-top: 1px solid var(--line);
  margin-top: 44px;
  padding-top: 20px;
  font-size: 14px;
}
code {
  background: #111925;
  padding: 2px 6px;
  border-radius: 6px;
}
.langlinks { margin: 14px 0 22px; }
ul { padding-left: 22px; }