:root {
  /* ink + body */
  --c-primary: #0a0a0a;
  --c-primary-active: #1f1f1f;
  --c-primary-disabled: #e5e5e5;
  --c-ink: #0a0a0a;
  --c-body: #3a3a3a;
  --c-body-strong: #1a1a1a;
  --c-muted: #6a6a6a;
  --c-muted-soft: #9a9a9a;
  --c-hairline: #e5e5e5;
  --c-hairline-soft: #f0f0f0;

  /* surfaces */
  --c-canvas: #fffaf0;
  --c-surface-soft: #faf5e8;
  --c-surface-card: #f5f0e0;
  --c-surface-strong: #ebe6d6;
  --c-surface-dark: #0a1a1a;
  --c-surface-dark-elev: #1a2a2a;
  --c-on-primary: #ffffff;
  --c-on-dark: #ffffff;
  --c-on-dark-soft: #a0a0a0;

  /* brand-color cards */
  --c-pink: #ff4d8b;
  --c-teal: #1a3a3a;
  --c-lavender: #b8a4ed;
  --c-peach: #ffb084;
  --c-ochre: #e8b94a;
  --c-mint: #a4d4c5;
  --c-coral: #ff6b5a;

  /* semantic */
  --c-success: #22c55e;
  --c-warning: #f59e0b;
  --c-error: #ef4444;

  /* tone palette (mnemonic) */
  --tone-1: #4cc9f0;
  --tone-2: #57cc99;
  --tone-3: #f4a261;
  --tone-4: #ef476f;
  --tone-5: #9a9a9a;

  /* radius */
  --r-xs: 6px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-pill: 9999px;
  --r-full: 9999px;

  /* spacing */
  --s-xxs: 4px;
  --s-xs: 8px;
  --s-sm: 12px;
  --s-md: 16px;
  --s-lg: 24px;
  --s-xl: 32px;
  --s-xxl: 48px;
  --s-section: 96px;

  /* typography stacks */
  --f-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --f-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --f-han: "Noto Sans SC", "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  /* timing */
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}