:root{
  --font-sans:"Roboto","Noto Sans TC",-apple-system,"Segoe UI",sans-serif;
  --font-display:"Roboto","Noto Sans TC",sans-serif;
  --font-display-tc:"Noto Sans TC","Roboto",sans-serif;
  --font-body-tc:"Noto Sans TC","Roboto",sans-serif;
  --font-mono:"Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --weight-light:300;
  --weight-regular:400;
  --weight-medium:500;
  --weight-bold:700;
  --weight-black:900;

  /* Type scale — display sizes are Roboto Bold/Black, tight tracking, uppercase for EN headlines */
  --text-display-1:76px;
  --text-display-2:56px;
  --text-h1:40px;
  --text-h2:32px;
  --text-h3:24px;
  --text-h4:20px;
  --text-body-lg:18px;
  --text-body:16px;
  --text-body-sm:14px;
  --text-caption:13px;
  --text-micro:11px;

  --leading-tight:1.05;
  --leading-snug:1.2;
  --leading-normal:1.5;
  --leading-relaxed:1.75;   /* CJK long-form */

  --tracking-tightest:-0.03em;
  --tracking-tight:-0.015em;
  --tracking-normal:0;
  --tracking-wide:0.04em;
  --tracking-widest:0.16em;  /* eyebrow / label caps */
}