:root {
  
  --tone-ink: #0C221B;
  --tone-ink-soft: #14352A;
  --tone-ink-line: #1D4636;
  --tone-mid: #2E7D5B;
  --tone-mid-deep: #245F46;
  --tone-soft: #7FB69A;
  --tone-paper: #F4F7F2;
  --tone-paper-deep: #E6EDE5;
  --tone-sheet: #FFFFFF;
  --tone-quiet: #5E6F66;

  
  --fluid-micro: clamp(0.68rem, 0.9vw, 0.78rem);
  --fluid-small: clamp(0.82rem, 1.1vw, 0.94rem);
  --fluid-body: clamp(0.95rem, 1.25vw, 1.08rem);
  --fluid-lead: clamp(1.05rem, 1.7vw, 1.32rem);
  --fluid-h3: clamp(1.15rem, 2vw, 1.5rem);
  --fluid-h2: clamp(1.5rem, 3.4vw, 2.5rem);
  --fluid-h1: clamp(2.1rem, 4.4vw, 3.4rem);
  --fluid-figure: clamp(1.5rem, 3.2vw, 2.3rem);

  
  --fluid-hair: clamp(0.25rem, 0.5vw, 0.4rem);
  --fluid-tight: clamp(0.5rem, 0.9vw, 0.8rem);
  --fluid-gap: clamp(0.9rem, 1.8vw, 1.5rem);
  --fluid-band: clamp(1.5rem, 3.4vw, 2.6rem);
  --fluid-band-wide: clamp(2.2rem, 5vw, 4rem);

  
  --measure: clamp(20rem, 62vw, 68rem);
  --measure-narrow: 56ch;
  --rail: 15vw;
  --bar-h: clamp(3.4rem, 5.4vh, 4.4rem);

  
  --hairline: 1px solid rgba(12, 34, 27, 0.14);
  --hairline-dark: 1px solid rgba(244, 247, 242, 0.16);
  --edge: 2px;
  --turn: 0.42s cubic-bezier(0.22, 0.68, 0.24, 1);
  --turn-quick: 0.2s ease;

  
  --face-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --face-display: ui-monospace, "JetBrains Mono", "Cascadia Mono", "SF Mono", Consolas, "Liberation Mono", monospace;
}