:root{
  --bg:#07162B;--bg2:#0A1E38;--card:#0E2948;--card2:#12355A;--blue:#248BFF;--cyan:#28D7F2;
  --green:#22C55E;--orange:#F59E0B;--red:#EF4444;--text:#F3F8FF;--muted:#9DB2CE;--weak:#6883A5;
  --border:rgba(72,145,220,.20);--border2:rgba(40,215,242,.22);--shadow:0 18px 45px rgba(0,0,0,.26);
  --radius:12px;--sidebar:220px;--topbar:64px;--gap:16px;--font:"Microsoft YaHei UI","Microsoft YaHei",Arial,sans-serif;
}