:root {
  /* Brand colors */
  --color-bg: #ffffff;
  --color-bg-soft: #f6f7f5;
  --color-bg-dark: #0a0a0a;
  --color-bg-dark-soft: #111314;

  --color-text: #0a0a0a;
  --color-text-muted: #4b4b4b;
  --color-text-soft: #6b6b6b;
  --color-text-on-dark: #ffffff;
  --color-text-on-dark-muted: #c8c8c8;

  --color-primary: #4CD67A;
  --color-primary-strong: #2db85d;
  --color-primary-dark: #115428;
  --color-primary-soft: #d8f5e2;

  --color-accent-blue: #62C8FF;
  --color-accent-blue-deep: #3484F7;
  --color-accent-blue-strong: #1A61BE;

  --color-danger: #E41A1A;
  --color-danger-dark: #680000;
  --color-danger-soft: #fde7e7;

  --color-border: #e8e8e8;
  --color-border-strong: #d4d4d4;
  --color-border-dark: #1f1f1f;

  /* Typography */
  --font-display: 'Unbounded', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-body: 'Unbounded', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;

  --fs-xs: 0.75rem;     /* 12px */
  --fs-sm: 0.875rem;    /* 14px */
  --fs-base: 1rem;      /* 16px */
  --fs-md: 1.125rem;    /* 18px */
  --fs-lg: 1.25rem;     /* 20px */
  --fs-xl: 1.5rem;      /* 24px */
  --fs-2xl: 2rem;       /* 32px */
  --fs-3xl: 2.5rem;     /* 40px */
  --fs-4xl: 3.25rem;    /* 52px */
  --fs-5xl: 4.5rem;     /* 72px */
  --fs-6xl: 6rem;       /* 96px */

  --lh-tight: 1.05;
  --lh-snug: 1.2;
  --lh-normal: 1.5;
  --lh-relaxed: 1.7;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 880px;
  --container-pad: clamp(1rem, 4vw, 2rem);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 24px rgba(0,0,0,0.10), 0 24px 48px rgba(0,0,0,0.12);
  --shadow-glow-green: 0 0 32px rgba(76,214,122,0.45), 0 0 64px rgba(76,214,122,0.25);
  --shadow-glow-red: 0 0 24px rgba(228,26,26,0.35);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --t-fast: 150ms;
  --t-base: 250ms;
  --t-slow: 450ms;
}