:root {
  color-scheme: dark;
  --space-3xs: 2px; --space-2xs: 4px; --space-xs: 8px; --space-sm: 12px; --space-md: 16px; --space-lg: 24px; --space-xl: 36px; --space-2xl: 48px; --space-3xl: 64px; --space-4xl: 96px;
  --text-xs: 0.8125rem; --text-sm: 0.875rem; --text-md: 1rem; --text-lg: 1.125rem; --text-xl: 1.375rem; --text-2xl: 1.75rem; --text-3xl: 2.25rem;
  --text-display-s: clamp(1.5rem, 2.5vw + 0.5rem, 2.25rem); --text-display: clamp(1.875rem, 3.5vw + 0.5rem, 3rem);
  --text-section: clamp(1.25rem, 1.5vw + 0.5rem, 1.875rem); --text-title: clamp(1.125rem, 0.5vw + 0.75rem, 1.25rem); --text-lead: clamp(1rem, 0.25vw + 0.875rem, 1.125rem);
  --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: 200ms; --dur-long: 350ms;
  --container: 960px; --gutter: 16px; --gap-columns: 12px; --section-gap-s: 32px; --section-gap: 48px; --section-gap-l: 64px;
  --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;

  /* Neutral Dark Charcoal Surfaces (Not Muddy Dark Blue) */
  --color-paper: oklch(17% 0.008 260);
  --color-paper-2: oklch(22% 0.01 260);
  --color-paper-3: oklch(28% 0.015 260);
  --color-paper-hover: oklch(34% 0.02 260);

  /* Sharp White & Grey Inks */
  --color-ink: oklch(98% 0.005 260);
  --color-ink-2: oklch(88% 0.01 260);
  --color-muted: oklch(72% 0.015 260);

  /* Crisp Visible Rules */
  --color-rule: oklch(36% 0.015 260);
  --color-rule-2: oklch(48% 0.02 260);

  /* Vibrant Clean Accent */
  --color-accent: oklch(72% 0.18 255);
  --color-accent-ink: oklch(12% 0.01 260);
  --color-accent-hover: oklch(78% 0.18 255);
  --color-accent-dim: oklch(28% 0.08 255);

  --color-stranger: oklch(74% 0.20 48);
  --color-stranger-dim: oklch(28% 0.08 48);
  --color-you: oklch(72% 0.18 250);
  --color-you-dim: oklch(28% 0.08 250);

  --color-online: oklch(78% 0.18 150);
  --color-stop: oklch(60% 0.24 25);
  --color-stop-ink: oklch(98% 0.005 260);
  --color-error: oklch(66% 0.22 25);
  --color-focus: oklch(72% 0.20 255);

  --font-display: "Mona Sans", ui-sans-serif, system-ui, sans-serif;
  --font-body: var(--font-display);
  --font-outlier: var(--font-display);
  --radius-sm: 8px; --radius-md: 14px; --radius-lg: 20px; --radius-card: 16px; --radius-sheet: 22px; --radius-pill: 9999px; --rule-hair: 1px;
  --shadow-card: 0 4px 20px oklch(10% 0.01 260 / 0.5);
  --shadow-sheet: 0 -8px 24px oklch(8% 0.01 260 / 0.6);
  --tracking-display: -0.015em; --display-weight: 700; --display-stretch: 100%;
}