:root {
  /* colors */
  --bg: #07070a;
  --surface: #0b0b12;
  --text: #e9e9f0;
  --muted: #a0a0b8;
  --primary: #7ee8fa;
  --accent: #0f3b73;
  --border: rgba(255, 255, 255, 0.12);
  --glass: rgba(255, 255, 255, 0.04);

  /* typography */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --fs-xs: 0.75rem;
  --fs-s: 0.875rem;
  --fs-m: 1rem;
  --fs-l: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: clamp(2.25rem, 4vw, 3.25rem);
  --lh-tight: 1.15;
  --lh-base: 1.45;
  --lh-relaxed: 1.65;

  /* radii */
  --r-1: 8px;
  --r-2: 12px;
  --r-3: 20px;

  /* shadows */
  --shadow-1: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-2: 0 16px 40px rgba(15, 59, 115, 0.2);

  /* layout */
  --container: 1200px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 18px;
  --space-5: 24px;
  --space-6: 36px;
}