/* Hallmark · macrostructure: Long Document · genre: editorial · theme: Newsprint (brand-adapted) · tone: austere · anchor hue: 28 · enrichment: none · nav: N6 · footer: Ft4 · motion: cut · contrast: pass (40–41) · slop: pass (42–45) · honest: pass (46) · chrome: pass (47) · tokens: pass (48) · responsive: pass (49) · icons: pass (30) · mobile: pass (34, 49, 50–57) */
/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V5 */
@font-face {
  font-family: "Hengzhi Serif";
  src: url("./fonts/HengzhiSerif-Bold.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 700;
}

@font-face {
  font-family: "Hengzhi Sans";
  src: url("./fonts/HengzhiSans-Regular.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 400;
}

:root {
  --color-paper: oklch(97% 0.012 65);
  --color-paper-2: oklch(94% 0.018 60);
  --color-surface: oklch(99% 0.008 65);
  --color-ink: oklch(22% 0.018 38);
  --color-ink-2: oklch(36% 0.02 38);
  --color-muted: oklch(46% 0.022 45);
  --color-rule: oklch(82% 0.02 55);
  --color-accent: oklch(52% 0.145 28);
  --color-focus: oklch(43% 0.15 28);
  --color-notice: oklch(94% 0.045 78);
  --color-notice-rule: oklch(69% 0.09 75);
  --font-display: "Hengzhi Serif", "Songti SC", "STSong", serif;
  --font-body: "Hengzhi Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --space-3xs: 0.125rem;
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.25rem;
  --text-lg: 1.5625rem;
  --text-xl: 1.953rem;
  --rule-hair: 1px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  overflow-x: clip;
}

html {
  background: var(--color-paper);
  color-scheme: light;
  font-size: 100%;
}

body {
  margin: 0;
  min-width: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.72;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration-color: var(--color-rule);
  text-decoration-thickness: var(--rule-hair);
  text-underline-offset: var(--space-2xs);
}

a:hover {
  text-decoration-color: var(--color-accent);
}

a:active {
  color: var(--color-focus);
}

a:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: var(--space-2xs);
}

.site-shell {
  width: min(100%, 76rem);
  margin-inline: auto;
  padding-inline: clamp(var(--space-md), 4vw, var(--space-2xl));
}

.nav-mast {
  display: grid;
  gap: var(--space-2xs);
  padding-block-start: max(var(--space-lg), env(safe-area-inset-top));
  text-align: center;
}

.mast-line {
  margin: 0;
  color: var(--color-muted);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-variant-caps: all-small-caps;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

.mast-name {
  min-width: 0;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-style: normal;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.mast-nav ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2xs) var(--space-lg);
  margin: var(--space-xs) 0 0;
  padding: 0;
  list-style: none;
}

.mast-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--color-ink-2);
  font-size: var(--text-sm);
  text-decoration: none;
  white-space: nowrap;
}

.mast-nav a[aria-current="page"] {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: var(--space-xs);
}

.mast-rule {
  height: var(--space-2xs);
  margin: var(--space-sm) 0 0;
  border: 0;
  border-block: var(--rule-hair) solid var(--color-rule);
}

main {
  padding-block: var(--space-2xl) var(--space-3xl);
}

.document {
  width: min(100%, 65ch);
  margin-inline-end: auto;
}

.document-title {
  min-width: 0;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 7vw, 4.75rem);
  font-style: normal;
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
  overflow-wrap: anywhere;
}

.lede {
  margin: var(--space-lg) 0 0;
  color: var(--color-ink-2);
  font-family: var(--font-display);
  font-size: var(--text-md);
  line-height: 1.68;
}

.document-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-lg);
  margin: var(--space-xl) 0;
  padding-block: var(--space-sm);
  border-block: var(--rule-hair) solid var(--color-rule);
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
}

.document-meta span {
  white-space: nowrap;
}

.prose-section {
  margin-block-start: var(--space-xl);
}

.prose-section h2 {
  margin: 0 0 var(--space-xs);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-style: normal;
  font-weight: 700;
  letter-spacing: -0.012em;
  line-height: 1.35;
}

.prose-section p,
.prose-section ul,
.prose-section ol {
  margin: var(--space-sm) 0 0;
  color: var(--color-ink-2);
}

.prose-section ul,
.prose-section ol {
  padding-inline-start: var(--space-lg);
}

.prose-section li + li {
  margin-block-start: var(--space-xs);
}

.notice {
  margin-block-start: var(--space-xl);
  padding: var(--space-md) var(--space-lg);
  border-block: var(--rule-hair) solid var(--color-notice-rule);
  background: var(--color-notice);
  color: var(--color-ink-2);
}

.notice strong {
  color: var(--color-ink);
}

.foot-dense {
  padding-block: var(--space-lg) max(var(--space-xl), env(safe-area-inset-bottom));
  border-block-start: var(--rule-hair) solid var(--color-rule);
  color: var(--color-muted);
  font-size: var(--text-sm);
  line-height: 1.65;
}

.foot-dense p {
  max-width: 78ch;
  margin: 0;
}

.foot-dense a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  white-space: nowrap;
}

@media (min-width: 40rem) {
  .nav-mast {
    padding-block-start: var(--space-xl);
  }

  main {
    padding-block-start: var(--space-3xl);
  }

  .document {
    margin-inline-start: clamp(0rem, 7vw, 5rem);
  }
}

@media (min-width: 60rem) {
  .document {
    margin-inline-start: clamp(3rem, 10vw, 9rem);
  }
}

@media (pointer: coarse) {
  .mast-nav a,
  .foot-dense a {
    min-height: 48px;
  }
}

@media print {
  .mast-nav {
    display: none;
  }

  .site-shell {
    width: 100%;
    padding-inline: 0;
  }

  .document {
    margin-inline: 0;
  }
}