:root {
  --paper:#f4f0e6;--paper-light:#faf7ef;--ink:#252e29;--muted:#77796e;
  --vermilion:#943b2d;--ink-line:#3d493f35;--ink-wash:#344b3d0a;
  --font-book:"Songti TC","Noto Serif TC",serif;
  --font-brush:"BiauKai","Kaiti TC","STKaiti","Songti TC",serif;
}