:root {
  --paper: #f8fbfa;
  --surface: #ffffff;
  --white: #ffffff;
  --ink: #173d37;
  --muted: #5a716b;
  --accent: #36a590;
  --accent-dark: #197461;
  --accent-soft: #e7f3ef;
  --line: #d6e5df;
  --body-font: "PingFang SC", "Microsoft YaHei", sans-serif;
  --display-font: "PingFang SC", "Microsoft YaHei", sans-serif;
}