:root {
  --color-paper: oklch(13% 0.012 350);
  --color-paper-2: oklch(17% 0.014 350);
  --color-paper-3: oklch(22% 0.016 350);
  --color-paper-soft: oklch(17% 0.014 350 / 0.92);
  --color-ink: oklch(94% 0.012 350);
  --color-ink-2: oklch(82% 0.014 350);
  --color-muted: oklch(69% 0.014 350);
  --color-neutral: oklch(58% 0.012 350);
  --color-rule: oklch(33% 0.018 350);
  --color-rule-2: oklch(27% 0.016 350);
  --color-accent: oklch(78% 0.12 350);
  --color-accent-soft: oklch(78% 0.12 350 / 0.14);
  --color-accent-ink: oklch(18% 0.018 350);
  --color-focus: oklch(94% 0.04 350);
  --color-focus-dark: oklch(24% 0.05 350);
  --color-error: oklch(66% 0.18 24);
  --color-success: oklch(74% 0.12 150);
  --color-overlay-top: oklch(13% 0.012 350 / 0.08);
  --color-overlay-bottom: oklch(10% 0.018 350 / 0.94);
  --color-overlay-side: oklch(10% 0.018 350 / 0.72);
  --color-photo-panel: oklch(12% 0.018 350 / 0.82);

  --font-display: "Iowan Old Style", "Palatino Linotype", "Songti SC", SimSun, serif;
  --font-body: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  --font-mono: Consolas, "SFMono-Regular", monospace;

  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4.5rem;
  --space-3xl: 7rem;

  --text-xs: 0.75rem;
  --text-micro: 0.625rem;
  --text-sm: 0.875rem;
  --text-md: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.75rem;
  --text-2xl: 2.5rem;
  --text-display: clamp(3rem, 7vw, 6.8rem);
  --text-display-small: clamp(2.25rem, 5vw, 4.5rem);

  --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-short: 140ms;
  --dur-medium: 260ms;
  --radius-sm: 0.25rem;
  --radius-md: 0.75rem;
  --radius-card: 1.25rem;
  --rule-thin: 1px;
  --shadow-photo: 0 2.5rem 7rem oklch(6% 0.01 350 / 0.46);
}