/* Hallmark · macrostructure: Split Studio · tone: austere industrial · anchor hue: copper · theme: Studio */
:root {
  --color-paper: oklch(97% 0.012 88);
  --color-paper-2: oklch(93% 0.018 88);
  --color-paper-3: oklch(88% 0.022 88);
  --color-ink: oklch(25% 0.025 245);
  --color-ink-2: oklch(39% 0.026 245);
  --color-muted: oklch(55% 0.025 245);
  --color-rule: oklch(79% 0.02 88);
  --color-accent: oklch(61% 0.135 48);
  --color-accent-ink: oklch(98% 0.015 88);
  --color-focus: oklch(55% 0.16 230);
  --color-night: oklch(23% 0.03 245);
  --color-night-2: oklch(30% 0.03 245);
  --color-night-wash: oklch(23% 0.03 245 / 0.02);
  --color-night-wash-strong: oklch(23% 0.03 245 / 0.48);

  /* Quality-policy tiles: the original site's gold, split on a hard 45° diagonal. */
  --color-gold: oklch(78.7% 0.152 88.7);
  --color-gold-2: oklch(73.5% 0.154 76.7);

  --font-display: "Geist", "PingFang TC", "Noto Sans TC", sans-serif;
  --font-body: "Newsreader", "Noto Serif TC", "PingFang TC", serif;
  --font-mono: "Geist Mono", "SFMono-Regular", monospace;

  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4.5rem;
  --space-3xl: 7rem;
  --space-4xl: 10rem;

  /* Shared measure: header, main content and footer all resolve to the same 1440px box. */
  --page-max: 90rem;
  --page-gutter: 1rem;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-body: 1.0625rem;   /* running text sits a notch above 16px: CJK glyphs need it */
  --text-md: 1.25rem;
  --text-lg: 1.5625rem;
  --text-xl: 1.9531rem;
  --text-2xl: 2.4414rem;
  --text-3xl: 3.0518rem;
  --text-display: clamp(2.4rem, 4.4vw, 4rem);
  --text-display-s: clamp(2.2rem, 3.9vw, 3.5rem);

  /* Heading scale: one H2 size for the whole site, one step up for the closing bands. */
  --text-h2: clamp(1.75rem, 3.1vw, 2.75rem);
  --text-h2-lead: clamp(1.9rem, 3.5vw, 3rem);
  --text-h3: clamp(1.25rem, 1.9vw, 1.5rem);
  --text-h3-lead: clamp(1.5rem, 2.4vw, 2rem);

  /* CJK-safe heading metrics: upright counters need room that Latin display type does not. */
  --leading-heading: 1.28;
  --leading-body: 1.75;
  --tracking-heading: -0.012em;

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --ease-drawer: cubic-bezier(0.32, 0.72, 0, 1);
  --dur-quick: 140ms;
  --dur-short: 220ms;
  --dur-medium: 420ms;
  --dur-long: 800ms;

  --rule-hairline: 1px;
  --radius-card: 0.15rem;
  --radius-pill: 999px;
  --shadow-card: 0 1.5rem 3rem oklch(22% 0.02 245 / 0.08);
  --z-base: 0;
  --z-nav: 20;
  --z-menu: 30;
}