:root {
  /* Brand Colors */
  --color-primary: #3344ff;
  --color-primary-dark: #1a2cdd;
  --color-primary-light: #6b8fff;
  --color-primary-rgb: 51, 68, 255;
  --color-accent: #4169ff;
  --color-accent-cyan: #4fc3f7;
  --color-accent-light: #a5b5ff;

  /* Dark backgrounds (hero + join us) */
  --color-bg-darkest: #050d1a;
  --color-bg-dark: #0a1e3d;
  --color-bg-dark-alt: #1a3a6e;
  --color-bg-navy: #0f2847;

  /* Light section backgrounds */
  --color-bg-page: #ffffff;
  --color-bg-section: #f4f5f9;
  --color-bg-section-alt: #f8f9fb;
  --color-bg-card: #ffffff;

  /* Section gradients */
  --gradient-hero: radial-gradient(ellipse at 25% 35%, #0f4a6e 0%, #0a2e5a 25%, #0a1e3d 60%, #050d1a 100%);
  --gradient-section-dark: linear-gradient(180deg, #0a1e3d 0%, #0f2847 100%);
  --gradient-section-light: linear-gradient(180deg, #ffffff 0%, #f4f5f9 100%);
  --gradient-section-alt: linear-gradient(180deg, #f8f9fb 0%, #eef0f5 100%);

  /* Neutrals */
  --color-black: #0a1128;
  --color-dark: #111827;
  --color-gray-900: #1f2937;
  --color-gray-700: #374151;
  --color-gray-500: #6b7280;
  --color-gray-400: #9ca3af;
  --color-gray-300: #d1d5db;
  --color-gray-200: #e5e7eb;
  --color-gray-100: #f3f4f6;
  --color-light: #f9fafb;
  --color-white: #ffffff;

  /* Typography - ALL sans-serif Inter + Noto Sans JP (unified) */
  --font-ja: 'Noto Sans JP', 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-en: 'Inter', 'Noto Sans JP', 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Inter', 'Noto Sans JP', 'Helvetica Neue', Arial, sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Font Sizes */
  --text-xs: 0.6875rem;
  --text-sm: 0.8125rem;
  --text-base: 0.9375rem;
  --text-lg: 1.0625rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: clamp(1.75rem, 1.3rem + 1.6vw, 2.5rem);
  --text-4xl: clamp(2rem, 1.5rem + 2.2vw, 3.5rem);
  --text-5xl: clamp(2.5rem, 1.8rem + 3vw, 4.5rem);
  --text-hero: clamp(3rem, 2rem + 5vw, 6.5rem);

  /* Line Heights */
  --leading-tight: 1.2;
  --leading-snug: 1.5;
  --leading-normal: 1.7;
  --leading-relaxed: 1.9;
  --leading-loose: 2.1;

  /* Letter Spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.06em;
  --tracking-wider: 0.12em;
  --tracking-widest: 0.2em;
  --tracking-hero: 0.04em;
  --tracking-ja: 0.04em;

  /* Spacing Scale */
  --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;
  --space-40: 10rem;
  --space-section: clamp(5rem, 4rem + 5vw, 9rem);

  /* Layout - UNIFIED container widths */
  --container-max: 1200px;
  --container-wide: 1400px;
  --container-padding: clamp(1.5rem, 1rem + 3vw, 4rem);
  --header-offset: 32px;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(10, 17, 40, 0.04);
  --shadow-md: 0 4px 12px rgba(10, 17, 40, 0.06);
  --shadow-lg: 0 8px 24px rgba(10, 17, 40, 0.08);
  --shadow-xl: 0 16px 40px rgba(10, 17, 40, 0.12);
  --shadow-glow: 0 0 40px rgba(51, 68, 255, 0.3);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 0.25s;
  --duration-normal: 0.5s;
  --duration-slow: 0.8s;
  --duration-slower: 1.2s;

  /* Z-index */
  --z-header: 1000;
  --z-overlay: 900;
  --z-hero-content: 10;
  --z-hero-bg: 1;
  --z-particles: 2;
}