:root {
  /* Brand colors */
  --color-navy: #0b1745;
  --color-navy-soft: #152653;
  --color-blue: #42658f;
  --color-blue-deep: #315173;
  --color-soft-blue: #ddeaf0;
  --color-soft-blue-light: #edf4f6;
  --color-cloud: #f4f7f8;
  --color-cream: #fcfbf8;
  --color-charcoal: #222735;
  --color-muted: #626c7a;
  --color-border: #e2e7ec;
  --color-accent: #e56b64;
  --color-white: #ffffff;
  --color-focus: #245f9c;

  /* Typography */
  --font-family-sans: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --font-size-lg: clamp(1.125rem, 1.05rem + 0.3vw, 1.3125rem);
  --font-size-h3: clamp(1.35rem, 1.14rem + 0.85vw, 1.75rem);
  --font-size-h2: clamp(2rem, 1.56rem + 1.8vw, 2.875rem);
  --font-size-h1: clamp(2.65rem, 1.9rem + 3.1vw, 4.25rem);
  --line-height-tight: 1.06;
  --line-height-heading: 1.15;
  --line-height-body: 1.68;
  --letter-spacing-tight: -0.035em;
  --letter-spacing-label: 0.14em;

  /* Spacing */
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.25rem;
  --space-xl: 3.5rem;
  --section-space: clamp(4.5rem, 8vw, 8rem);

  /* Layout */
  --container-max: 80rem;
  --content-max: 48rem;
  --container-gutter: clamp(1.25rem, 4vw, 3rem);
  --header-height: 4.75rem;

  /* Shape and elevation */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.125rem;
  --radius-xl: 1.75rem;
  --border-standard: 1px solid var(--color-border);
  --shadow-subtle: 0 0.5rem 1.875rem rgba(11, 23, 69, 0.06);

  /* Motion */
  --transition-fast: 160ms ease;
  --transition-standard: 220ms ease;

  /* Layering */
  --z-header: 100;
  --z-menu: 110;
  --z-modal: 200;
}