:root {
  --tg-bg: #F8FCFC;
  --tg-surface: #ffffff;
  --tg-dark: #0e403d;
  --tg-on-dark: #d8fffb;
  --tg-text: #1F2937;
  --tg-muted: #6B7280;
  --tg-line: #dce9e7;
  --tg-primary: #087D74;
  --tg-primary-hover: #119B91;
  --tg-primary-light: #EAF9F7;
  --tg-secondary: #6AD7CF;
  --tg-danger: #FF4B4B;
  --tg-shadow: 0 20px 60px rgba(22,104,98,.13);
  --tg-font-songti: "Taiguojian Songti", "Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, SimSun, serif;
  --tg-font-ui: "IBM Plex Sans SC", system-ui, sans-serif;
  --tg-font-thai: Anuphan, system-ui, sans-serif;
  --tg-radius-sm: .75rem;
  --tg-radius-md: 1.25rem;
  --tg-radius-lg: 1.75rem;
  --tg-surface-muted: #EAF9F7;
  --tg-content: 74rem;
}