:root {
  --font-body: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  --font-display: var(--font-body);
  --color-paper: #f3f6fb;
  --color-surface: #ffffff;
  --color-ink: #182739;
  --color-muted: #53647b;
  --color-rule: #c8d4e4;
  --color-primary: #1745de;
  --color-primary-hover: #1035b6;
  --color-on-primary: #ffffff;
  --color-tint: #eef4ff;
  --color-success: #147b47;
  --color-error: #b83b35;
  --color-focus: #1745de;
  --radius-input: 7px;
  --radius-panel: 10px;
  --container: 1000px;
  --gutter: 24px;
  --text-small: 13px;
  --text-body: 15px;
  --text-heading: 28px;
}