:root {
  --bousai-color-navy-950: #052f5f;
  --bousai-color-navy-900: #073b73;
  --bousai-color-navy-700: #165a91;
  --bousai-color-orange-600: #e95600;
  --bousai-color-orange-500: #ff6b12;
  --bousai-color-orange-100: #fff0e7;
  --bousai-color-white: #ffffff;
  --bousai-color-gray-950: #17202a;
  --bousai-color-gray-700: #465566;
  --bousai-color-gray-300: #cbd5df;
  --bousai-color-gray-100: #eef3f7;
  --bousai-color-background: #f7f9fb;
  --bousai-color-sky-100: #eaf5fb;
  --bousai-color-green-600: #287a62;
  --bousai-color-yellow-100: #fff8dc;

  --bousai-font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --bousai-font-size-xs: 0.75rem;
  --bousai-font-size-sm: 0.875rem;
  --bousai-font-size-base: 1rem;
  --bousai-font-size-lg: 1.125rem;
  --bousai-font-size-xl: clamp(1.25rem, 2vw, 1.5rem);
  --bousai-font-size-2xl: clamp(1.75rem, 4vw, 2.5rem);
  --bousai-font-size-3xl: clamp(2rem, 5vw, 3.5rem);
  --bousai-line-height-body: 1.8;
  --bousai-line-height-heading: 1.35;

  --bousai-space-1: 0.25rem;
  --bousai-space-2: 0.5rem;
  --bousai-space-3: 0.75rem;
  --bousai-space-4: 1rem;
  --bousai-space-5: 1.5rem;
  --bousai-space-6: 2rem;
  --bousai-space-7: 3rem;
  --bousai-space-8: 4rem;
  --bousai-section-space: clamp(3.5rem, 8vw, 7.5rem);

  --bousai-content-width: 75rem;
  --bousai-reading-width: 46rem;
  --bousai-gutter: clamp(1rem, 4vw, 2rem);
  --bousai-radius-sm: 0.5rem;
  --bousai-radius-md: 1rem;
  --bousai-radius-lg: 1.5rem;
  --bousai-shadow-card: 0 0.75rem 2rem rgb(5 47 95 / 10%);
  --bousai-shadow-raised: 0 1.25rem 3.5rem rgb(5 47 95 / 18%);
  --bousai-transition: 180ms ease;
  --bousai-focus-ring: 0 0 0 0.1875rem rgb(255 107 18 / 35%);
}