:root {
  /* Font Families */
  --font-primary: 'Open Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Montserrat', 'Helvetica Neue', Arial, sans-serif;
  --font-hero: 'Montserrat', sans-serif;
  --font-condensed: 'IBM Plex Sans Condensed', sans-serif;
  --font-poppins: 'Poppins', sans-serif;
  --font-barlow: 'Barlow Condensed', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  /* Brand Identity */
  --brand-legal-name: 'Rock Engineering Group LLC';
  --brand-public-name: 'Rock Engineering';
  --brand-domain: 'rockengineers.com';
  --brand-tagline: 'Precision. Integrity. Execution.';

  /* Core Color Palette */
  --color-black: #000000;
  --color-white: #ffffff;
  --color-text: #111827;
  --color-text-dark: #0B1220;
  --color-text-muted: #4B5563;
  --color-gray: #374151;
  --color-gray-light: #9CA3AF;
  --color-gray-muted: #6B7280;

  --color-blue-dark: #1F365C;
  --color-blue-deep: #13243F;
  --color-blue-steel: #2E4A73;
  --color-blue-light: #DCE6F2;

  --color-steel-gray: #5F6875;
  --color-slate: #263241;
  --color-slate-light: #E5E7EB;

  --color-bronze-accent: #A76C3A;
  --color-bronze-accent-dark: #7A4B24;
  --color-bronze-accent-light: #D8B08A;

  --color-earth: #6F5E4B;
  --color-stone: #C9C3B8;
  --color-concrete: #F5F5F3;

  --color-border-light: #D1D5DB;
  --color-border-dark: #1F2937;

  --color-bg-light: #F5F5F3;
  --color-bg-lighter: #FAFAF8;
  --color-bg-dark: #13243F;
  --color-bg-section: #EEF1F4;

  --color-shadow: rgba(15, 23, 42, 0.10);
  --color-shadow-heavy: rgba(15, 23, 42, 0.22);

  /* Accent & Heading Colors */
  --color-heading-rgb: 31, 54, 92;
  --color-heading: rgba(var(--color-heading-rgb), 1);
  --color-subheading: rgba(var(--color-heading-rgb), 0.86);
  --color-heading-muted: rgba(var(--color-heading-rgb), 0.74);
  --color-accent: var(--color-bronze-accent);
  --color-accent-hover: var(--color-bronze-accent-dark);

  /* Navigation & Hero Specific */
  --color-nav-link: var(--color-blue-dark);
  --color-nav-hover: var(--color-bronze-accent);
  --color-nav-bg: rgba(245, 245, 243, 0.96);
  --color-hero-title: var(--color-blue-dark);
  --color-hero-subtitle: var(--color-text-muted);
  --gradient-hero: linear-gradient(135deg, var(--color-blue-deep) 0%, var(--color-blue-dark) 48%, var(--color-steel-gray) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-bronze-accent) 0%, var(--color-bronze-accent-dark) 100%);
  --clip-hero-shape: polygon(0 0, 100% 0, 100% 82%, 0 100%);

  /* Brand Pattern & Logo Direction */
  --brand-mark-shape: 'geometric-r-strata';
  --brand-pattern-name: 'engineering-strata';
  --brand-pattern-angle: 135deg;
  --brand-pattern-line: rgba(167, 108, 58, 0.18);

  /* Footer */
  --color-footer-bg: var(--color-blue-deep);
  --color-footer-text: #D1D5DB;
  --color-footer-muted: #9CA3AF;
  --color-footer-border: rgba(255, 255, 255, 0.14);

  /* Layout Tokens */
  --container-max-width: 1180px;
  --section-padding-y: 5rem;
  --section-padding-x: 1.5rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition-standard: 180ms ease-in-out;
}