/* 共用原子系統的 Aurora Glass 視覺變數。輕量模式只降低效果成本。 */
:root {
  --a2:#2563EB;
  --a3:#06B6D4;
  --a4:#10D9A0;
  --a1:#7C3AED;
  --red:#F43F5E;
  --text:#12131E;
  --glass-hi:rgba(255,255,255,.60);
  --glass-lo:rgba(255,255,255,.10);
  --surface-strong:rgba(255,255,255,.70);
  --stroke-strong:rgba(255,255,255,.96);
  --shadow-float:0 40px 100px -22px rgba(37,99,235,.28),0 16px 40px -10px rgba(76,29,149,.18),inset 0 1.5px 0 rgba(255,255,255,.92);
  --shadow-card:0 18px 46px -12px rgba(30,40,90,.16),inset 0 1.5px 0 rgba(255,255,255,.80);
  --shadow-focus:0 0 0 4px rgba(37,99,235,.16),0 10px 26px rgba(37,99,235,.14);
  --blur-strong:blur(30px) saturate(2.1);
  --r-xl:40px;
  --r-l:30px;
  --r-m:22px;
  --r-s:15px;
  --r-pill:999px;
  --hub-font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif;
  --hub-blue:var(--a2);
  --hub-ink:var(--text);
  --hub-border:rgba(255,255,255,.80);
}