:root {
  color-scheme: light;
  --paper: #f8f9fc; --panel: #ffffff; --ink: #252739; --muted: #62677c;
  --line: #e7e9f1; --soft: #f0f2f7; --accent: #6545d5; --accent-soft: #efebfc;
  --green: #216b55; --green-soft: #e9f5ef; --amber: #80531b; --amber-soft: #fff5df;
  --red: #a43646; --red-soft: #fcecf0; --code-bg: #202536; --code-ink: #e2e8f6;
  --focus: #7e59eb; --shadow: 0 12px 38px #2527390d;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --mono: ui-monospace, 'SFMono-Regular', Consolas, monospace;
  --radius: 12px; --sidebar: 228px; --header: 68px;
}
[data-theme="dark"] {
  color-scheme: dark;
  --paper: #171923; --panel: #20232f; --ink: #e7e9f2; --muted: #a5adc3;
  --line: #34394b; --soft: #292d3b; --accent: #b59aff; --accent-soft: #342b4e;
  --green: #8ed3b4; --green-soft: #23392f; --amber: #edc587; --amber-soft: #3c3224;
  --red: #ffa6b1; --red-soft: #422c36; --focus: #c5b3ff; --shadow: none;
}