:root {
  /* Brand palette — Editorial Gallery Luxury */
  --color-ink: #1a1a1a;
  --color-charcoal: #2c2c2c;
  --color-stone: #5c5c5c;
  --color-muted: #8a8a8a;
  --color-line: #d9d4cb;
  --color-cream: #f7f4ef;
  --color-paper: #ffffff;
  --color-brass: #b08d57;
  --color-brass-dark: #8a6b3d;
  --color-overlay: rgba(18, 18, 18, 0.55);
  --color-overlay-strong: rgba(18, 18, 18, 0.72);

  /* Typography */
  --font-serif: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  --font-sans: "Noto Sans TC", "Microsoft JhengHei", "PingFang TC", sans-serif;
  --font-display: "Noto Serif TC", Georgia, serif;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.375rem;
  --fs-xl: 1.75rem;
  --fs-2xl: 2.25rem;
  --fs-3xl: clamp(2rem, 4vw, 3rem);
  --fs-hero: clamp(2.25rem, 5vw, 3.75rem);

  --lh-tight: 1.25;
  --lh-base: 1.7;
  --lh-relaxed: 1.85;

  --tracking-wide: 0.12em;
  --tracking-label: 0.18em;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* Layout */
  --container: 1140px;
  --header-height: 80px;
  --radius-sm: 2px;
  --radius-md: 6px;
  --shadow-soft: 0 12px 40px rgba(0, 0, 0, 0.08);
  --shadow-lift: 0 18px 48px rgba(0, 0, 0, 0.14);
  --transition: 0.28s ease;
  --transition-slow: 0.55s ease;

  /* Breakpoints (reference) */
  --bp-tablet: 768px;
  --bp-desktop: 1024px;
}