:root {
  /* Shared colors from the approved warm-white and restrained-red design. */
  --bg-paper: #faf8f5;
  --nav-bg: #ffffff;
  --bg-surface: rgba(255, 255, 255, 0.92);
  --bg-surface-solid: #ffffff;
  --bg-canvas: #e9e7e3;
  --panel-border: #e5e0da;
  --panel-shadow: 0 12px 32px rgba(52, 43, 34, 0.06);
  --text-ink: #282826;
  --text-muted: #77716b;
  --text-light: #a19b95;
  --accent-red: #963d36;
  --accent-red-hover: #7e302b;
  --accent-blue: #35484c;
  --accent-gold: #b0946e;
  --border-subtle: rgba(0, 0, 0, 0.06);
  --shadow-card: 0 10px 30px -10px rgba(42, 39, 37, 0.07),
    0 2px 6px -1px rgba(42, 39, 37, 0.03);
  --shadow-hover: 0 16px 36px -12px rgba(42, 39, 37, 0.12);
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}