/* 收斂版彩色印刷霓虹，只改表面 token，幾何沿用 base.css。 */
:root[data-era="b"] {
  --color-scheme: light;
  --color-bg: #F0DFCA;
  --color-paper: #F1E2D0;
  --color-text: #2F3A4D;
  --color-text-muted: #596168;
  --color-accent: #94493A;
  --color-button: #3B455D;
  --color-divider: #78695F;
  --color-heavy: #754D48;
  --color-button-text: #FFF3DE;
  --color-accent-secondary: #669B9C;
  --color-focus: #2F3A4D;
  --color-heavy-surface: #F1E2D0;
  --font-heading: "Noto Serif TC", "Noto Serif CJK TC", "PingFang TC", "PMingLiU", serif;
  --font-body: "Noto Sans TC", "Noto Sans CJK TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --surface-background: linear-gradient(120deg, rgb(59 69 93 / 0.025), transparent 62%), radial-gradient(ellipse at top right, rgb(255 243 222 / 0.15), transparent 70%), repeating-linear-gradient(90deg, rgb(59 69 93 / 0.02) 0 1px, transparent 1px 4px);
  --surface-border-color: #78695F;
  --surface-border-style: solid;
  --surface-border-image: none;
  --button-background: #3B455D;
  --illustration-filter: saturate(0.82);
  --heavy-illustration-filter: saturate(0.30) contrast(0.92);
}