/* tokens.css — 设计令牌：由主题「向量数据库」提取
   视觉关键词：高维空间 / 星图连线 / 精确与近似 / 深空科技感 */
:root{
  --bg:#f4f6fb; --surface:#ffffff; --surface-2:#eef2f9;
  --text:#1b2436; --muted:#54607a;
  --primary:#3b56c9; --primary-strong:#2e439e; --on-primary:#ffffff;
  --accent:#0d8fa3; --line:#dde4f0; --code-bg:#101a30; --code-text:#dfe7f5;
  --focus:#2563eb; --danger:#b91c1c;
  --radius:12px; --radius-sm:8px;
  --shadow:0 1px 2px rgba(16,24,40,.05), 0 8px 24px -12px rgba(16,24,40,.18);
  --font:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"JetBrains Mono",Menlo,Consolas,monospace;
  --speed:180ms;
}
[data-theme="dark"]{
  --bg:#0a0f1e; --surface:#121a30; --surface-2:#182238;
  --text:#e8edf8; --muted:#a3afca;
  --primary:#93a5ff; --primary-strong:#b3bfff; --on-primary:#0a0f1e;
  --accent:#43d2e4; --line:#26324f; --code-bg:#0b1324; --code-text:#d7e0f2;
  --focus:#7cc7ff; --danger:#ff8a8a;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 10px 30px -12px rgba(0,0,0,.55);
}