:root {
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --color-bg: #ffffff;
  --color-surface: #f6f9f7;
  --color-surface-2: #eef3f0;
  --color-text: #17212b;
  --color-muted: #64748b;
  --color-border: #e3e8e5;
  --color-primary: #2f9e6f;
  --color-primary-strong: #247f57;
  --color-primary-soft: #e7f5ee;
  --color-tia: #7c5cff;
  --color-tia-soft: #efeaff;
  --color-danger: #d64545;
  --color-warning: #b7791f;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --shadow-1: 0 1px 2px rgba(16, 24, 40, 0.05), 0 1px 3px rgba(16, 24, 40, 0.06);
  --shadow-2: 0 10px 30px rgba(16, 24, 40, 0.08);
  --maxw: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f1418;
    --color-surface: #161d22;
    --color-surface-2: #1d262c;
    --color-text: #e8eef2;
    --color-muted: #9aa7b2;
    --color-border: #2a343b;
    --color-primary-soft: #16352a;
    --color-tia-soft: #241f3d;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}