:root {
  /* Brand colors */
  --blue-900: #0a1f4d;
  --blue-700: #1554c8;
  --blue-500: #2876f9;
  --blue-300: #7aa8ff;
  --blue-100: #e8f0ff;
  --cyan-400: #4dd4ff;
  --cyan-300: #8be3ff;

  --ink: #0e1726;
  --ink-muted: #4a5568;
  --ink-soft: #6b7280;
  --white: #ffffff;
  --bg: #f7f9fc;
  --bg-alt: #eef2f9;

  /* Typography — single Roboto family */
  --font-display: "Roboto", system-ui, sans-serif;
  --font-display-soft: "Roboto", system-ui, sans-serif;
  --font-body: "Roboto", system-ui, sans-serif;

  /* Fluid type scale — mixed case, lighter, elegant */
  --fs-h1: clamp(2.5rem, 5.5vw, 4.5rem);
  --fs-h2: clamp(2rem, 3.5vw, 3rem);
  --fs-h3: clamp(1.35rem, 2vw, 1.75rem);
  --fs-body: 1rem;
  --fs-sm: 0.875rem;
  --fs-xs: 0.75rem;

  /* Spacing scale */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 96px;
  --sp-10: 128px;

  /* Radii / shadow */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(10, 31, 77, 0.06);
  --shadow-md: 0 8px 24px rgba(10, 31, 77, 0.1);
  --shadow-lg: 0 24px 48px rgba(10, 31, 77, 0.16);
  --shadow-glow: 0 0 0 1px var(--cyan-400), 0 12px 32px rgba(77, 212, 255, 0.25);

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.68, -0.6, 0.32, 1.6);
  --dur-fast: 180ms;
  --dur-base: 320ms;
  --dur-slow: 600ms;

  /* Layout */
  --container: 1280px;
  --gutter: 24px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}