:root {
  --brand-red: #8f1320;
  --brand-red-deep: #6b0d18;
  --brand-red-soft: rgba(143, 19, 32, 0.12);
  --sidebar: #0d1117;
  --sidebar-soft: #161b22;
  --sidebar-line: rgba(255, 255, 255, 0.08);
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: rgba(255, 255, 255, 0.98);
  --paper: #f2f4f7;
  --paper-accent: #eef1f6;
  --ink: #17212f;
  --ink-soft: #435064;
  --muted: #6f7b8d;
  --line: rgba(23, 33, 47, 0.1);
  --success: #18805d;
  --warning: #c28a12;
  --danger: #a31f2f;
  --neutral: #7b8493;
  --info: #2d6cdf;
  --purple: #7243d1;
  --shadow-soft: 0 18px 45px rgba(13, 17, 23, 0.08);
  --shadow-card: 0 24px 55px rgba(13, 17, 23, 0.1);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 26px;
}