:root {
  color-scheme: dark;
  --space-3xs: 2px; --space-2xs: 4px; --space-xs: 8px; --space-sm: 12px; --space-md: 16px; --space-lg: 24px; --space-xl: 40px; --space-2xl: 64px; --space-3xl: 96px; --space-4xl: 144px;
  --text-xs: 0.8125rem; --text-sm: 0.875rem; --text-md: 1rem; --text-lg: 1.25rem; --text-xl: 1.5625rem; --text-2xl: 1.953rem; --text-3xl: 2.441rem;
  --text-display-s: clamp(2.25rem, 4.5vw + 0.5rem, 3.75rem); --text-display: clamp(2.75rem, 5.5vw + 1rem, 4.75rem);
  --text-section: clamp(1.75rem, 2.4vw + 0.875rem, 2.75rem); --text-title: clamp(1.15rem, 0.6vw + 0.85rem, 1.45rem); --text-lead: clamp(1.05rem, 0.3vw + 0.95rem, 1.25rem);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1); --ease-in: cubic-bezier(0.7, 0, 0.84, 0); --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-micro: 120ms; --dur-short: 220ms; --dur-long: 420ms;
  --color-error: oklch(55% 0.22 25); --color-success: oklch(91% 0.24 125);
  --container: 1360px; --gutter: 32px; --gap-columns: 16px; --section-gap-s: 64px; --section-gap: 88px; --section-gap-l: 112px;
  --z-base: 1; --z-raised: 10; --z-dropdown: 100; --z-sticky: 200; --z-sticky-nav: 300; --z-modal: 400; --z-toast: 500; --z-tooltip: 600;

  /* HiCloud Cyberpunk Reference Palette: Pitch Black & Electric Acid Lime */
  --color-paper: oklch(9% 0.008 140);
  --color-paper-2: oklch(12% 0.012 140);
  --color-paper-3: oklch(16% 0.018 140);
  --color-paper-card: oklch(11% 0.01 140);
  --color-paper-card-hover: oklch(14% 0.015 140);
  --color-side-panel: oklch(18% 0.04 135);

  --color-trace-bus: oklch(25% 0.03 140);
  --color-chip-body: oklch(12% 0.012 140);
  --color-chip-pin: oklch(35% 0.03 140);
  --color-chip-pin-hi: oklch(91% 0.24 125);
  --scrim-pcb: oklch(9% 0.008 140 / 0.88);
  --scrim-pcb-deep: oklch(8% 0.006 140 / 0.96);
  --glow-hero: oklch(91% 0.24 125 / 0.06);
  --glow-subtle: oklch(91% 0.24 125 / 0.03);

  /* Contrast Ink Typography */
  --color-ink: oklch(98% 0.01 140);
  --color-ink-2: oklch(84% 0.025 140);
  --color-muted: oklch(62% 0.03 140);
  --color-rule: oklch(22% 0.02 145);
  --color-rule-2: oklch(30% 0.03 145);

  /* Signature Electric Cyber Lime / Neon Acid Accent */
  --color-accent: oklch(91% 0.24 125);
  --color-accent-hi: oklch(95% 0.26 125);
  --color-accent-ink: oklch(8% 0.01 130);
  --color-accent-soft: oklch(20% 0.05 135);
  --color-accent-border: oklch(91% 0.24 125 / 0.4);
  --color-focus: oklch(91% 0.24 125);

  /* Footer Author Pill (batalshikov.com) */
  --color-pill-border: oklch(26% 0.02 145);
  --color-pill-border-hover: oklch(91% 0.24 125);
  --color-pill-bg: oklch(12% 0.01 140);
  --color-pill-label: oklch(65% 0.03 140);
  --color-pill-name: oklch(98% 0.01 140);
  --color-pill-arrow: oklch(74% 0.20 60);

  /* Technical Cyber & Geometric Typography */
  --font-display: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;

  /* Sharp Industrial & Cyberpunk Geometry (Direct match with reference) */
  --radius-badge: 0px;
  --radius-card: 0px;
  --radius-card-sm: 0px;
  --radius-pill: 999px;
  --radius-btn: 0px;
  --rule-hair: 1px;
  --shadow-card: none;
  --tracking-display: -0.04em;
  --display-weight: 800;
}