diff --git a/client/lib/core/theme/app_dims.g.dart b/client/lib/core/theme/app_dims.g.dart
new file mode 100644
index 0000000..8071655
--- /dev/null
+++ b/client/lib/core/theme/app_dims.g.dart
@@ -0,0 +1,30 @@
+// GENERATED by tool/gen_tokens.mjs — DO NOT EDIT.
+// 源：lib/core/theme/token_source/tokens.css（:root 共享块，主题无关）。改尺寸请改源后重跑脚本。
+// 间距/圆角/字号三套主题统一，故为 const 标量，不进 per-theme AppTokens。
+
+class AppDims {
+  AppDims._();
+  // 间距
+  static const double sp1 = 4;
+  static const double sp2 = 8;
+  static const double sp3 = 12;
+  static const double sp4 = 16;
+  static const double sp5 = 20;
+  static const double sp6 = 24;
+  static const double sp8 = 32;
+  static const double sp10 = 40;
+  // 圆角
+  static const double rSm = 4;
+  static const double rMd = 6;
+  static const double rLg = 10;
+  static const double rXl = 14;
+  static const double rPill = 999;
+  // 字号
+  static const double fsDisplay = 28;
+  static const double fsH1 = 21;
+  static const double fsH2 = 17;
+  static const double fsTitle = 15;
+  static const double fsBody = 13;
+  static const double fsSm = 12;
+  static const double fsXs = 11;
+}
diff --git a/client/tool/gen_tokens.mjs b/client/tool/gen_tokens.mjs
index ea319ac..9cfa637 100644
--- a/client/tool/gen_tokens.mjs
+++ b/client/tool/gen_tokens.mjs
@@ -72,3 +72,50 @@ AppTokens appTokensOf(String key) {
 `;
 fs.writeFileSync(path.join(ROOT, 'lib/core/theme/app_tokens.g.dart'), body);
 console.log('generated app_tokens.g.dart');
+
+// ── 主题无关标量（间距/圆角/字号）：解析 :root{} 共享块 → AppDims ──
+function rootBlock(){
+  // 匹配 ":root{" 而非 ":root[data-theme=...]"（前者 { 紧跟）
+  const m = css.match(/:root\s*\{([^}]*)\}/);
+  if(!m) throw new Error('missing :root shared block');
+  const out = {};
+  for(const mm of m[1].matchAll(/--([a-z0-9-]+)\s*:\s*([^;]+);/g)) out[mm[1]] = mm[2].trim();
+  return out;
+}
+// kebab → camel：sp-1→sp1 · r-sm→rSm · fs-h1→fsH1 · fs-display→fsDisplay
+function camel(name){
+  const [h, ...rest] = name.split('-');
+  return h + rest.map(s => s.charAt(0).toUpperCase() + s.slice(1)).join('');
+}
+function px(raw){
+  const m = raw.trim().match(/^([\d.]+)px$/);
+  if(!m) throw new Error('unsupported dim value: ' + raw);
+  return m[1];
+}
+function emitDims(){
+  const r = rootBlock();
+  const groups = [
+    ['间距', k => k.startsWith('sp-')],
+    ['圆角', k => k.startsWith('r-')],
+    ['字号', k => k.startsWith('fs-')],
+  ];
+  const lines = [];
+  for(const [label, pick] of groups){
+    const keys = Object.keys(r).filter(pick);
+    if(!keys.length) continue;
+    lines.push(`  // ${label}`);
+    for(const k of keys) lines.push(`  static const double ${camel(k)} = ${px(r[k])};`);
+  }
+  return lines.join('\n');
+}
+const dimsBody = `// GENERATED by tool/gen_tokens.mjs — DO NOT EDIT.
+// 源：lib/core/theme/token_source/tokens.css（:root 共享块，主题无关）。改尺寸请改源后重跑脚本。
+// 间距/圆角/字号三套主题统一，故为 const 标量，不进 per-theme AppTokens。
+
+class AppDims {
+  AppDims._();
+${emitDims()}
+}
+`;
+fs.writeFileSync(path.join(ROOT, 'lib/core/theme/app_dims.g.dart'), dimsBody);
+console.log('generated app_dims.g.dart');