/* Institutional Expression SOURCE · Hybrid A×C (Standard structure × Archive custody)
   Visual system only — production HTML copy/routes preserved. */

:root {
  /* Hybrid material tokens */
  --bg: #ece8df;
  --bg-raised: #f7f4ec;
  --bg-inset: #e0dbd0;
  --bg-dark: #1a1c20;
  --ink: #14161a;
  --ink-2: #3f434c;
  --ink-3: #6a6f78;
  --rule: #c4bdb0;
  --rule-strong: #1a1c20;
  --accent: #0c3d52; /* authority blue */
  --accent-warm: #8a4b28; /* custody copper */
  --accent-soft: #d4e2ea;
  --accent-dark: #0a3345;
  --state-published: #1f4d3a;
  --state-corrected: #8a4b28;
  --state-amended: #6b2c35;
  --state-withdrawn: #5c5c5c;
  --evidence: #2a5548;
  --frame: 74rem;
  --measure: 40rem;
  --page-pad: clamp(3.5rem, 7vw, 6.5rem);
  --pad: clamp(1.2rem, 3vw, 2.4rem);
  /* Type stacks (hybrid — not Newsreader/DM cream clone) */
  --display: "Source Serif 4", Georgia, "Times New Roman", serif;
  --body: "Source Sans 3", system-ui, -apple-system, sans-serif;
  --meta: "IBM Plex Mono", ui-monospace, monospace;
  /* Production aliases (existing class system) */
  --paper: var(--bg);
  --paper-deep: var(--bg-inset);
  --ink-soft: var(--ink-2);
  --sans: var(--body);
  --serif: var(--display);
  --mono: var(--meta);
}

* { box-sizing: border-box; }
html { color-scheme: light; scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--body);
  font-size: 16.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.frame {
  width: min(calc(100% - 2 * var(--pad)), var(--frame));
  margin-inline: auto;
}
.skip-link {
  position: absolute; top: -4rem; left: 1rem; z-index: 10;
  padding: .75rem 1rem; color: #f4f7f9; background: var(--accent-dark);
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* —— Masthead —— */
.site-header {
  position: relative;
  background: var(--bg-raised);
  border-bottom: 2px solid var(--rule-strong);
}
.header-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem 2rem;
  min-height: 5rem;
  padding-block: 1.1rem .85rem;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -.02em;
  text-decoration: none;
  color: var(--ink);
}
.brand img { width: 2.125rem; height: 2.125rem; }
.brand-meta {
  display: block;
  margin-top: .28rem;
  color: var(--ink-3);
  font: 400 .68rem/1.3 var(--meta);
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 400;
}
nav.primary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  border-top: 1px solid transparent;
}
nav.primary a {
  color: var(--ink-2);
  font-size: .88rem;
  text-decoration: none;
  padding: .55rem .15rem .45rem;
  margin-right: .95rem;
  min-height: 2.5rem;
  display: inline-flex;
  align-items: center;
  border-bottom: 2px solid transparent;
}
nav.primary a:hover,
nav.primary a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}
nav.primary a[aria-current="page"] { font-weight: 600; }
nav.primary a[aria-current="page"]::after { display: none; }

.eyebrow {
  margin: 0 0 .85rem;
  color: var(--accent);
  font: 500 .7rem/1.3 var(--meta);
  letter-spacing: .09em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }

/* —— Home / corporate —— */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(14rem, .65fr);
  gap: 2rem 3rem;
  padding-block: clamp(2.75rem, 7vw, 5rem) clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--rule);
}
.hero h1 {
  max-width: 14ch;
  margin-bottom: 0;
  font: 600 clamp(2.1rem, 4.5vw, 3.35rem)/1.08 var(--display);
  letter-spacing: -.03em;
  color: var(--ink);
}
.hero-detail {
  align-self: end;
  max-width: 26rem;
  padding: 1.15rem 1.15rem 1.2rem;
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent-warm);
}
.hero-detail p {
  margin-bottom: 1.25rem;
  color: var(--ink-2);
  font-size: 1.02rem;
  line-height: 1.55;
}
.text-link {
  color: var(--accent);
  font-weight: 600;
  text-decoration-thickness: 1px;
  text-underline-offset: .25em;
}
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: .35rem; }
.page-actions { margin-top: 2rem; }
.btn {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: .55rem 1rem;
  font-weight: 600;
  font-size: .92rem;
  text-decoration: none;
  border: 1px solid transparent;
}
.btn-primary {
  color: #f4f7f9;
  background: var(--accent);
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost {
  color: var(--accent);
  border-color: var(--rule);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--accent); }

.statement-band {
  padding-block: 2.75rem;
  color: #eef1f3;
  background: var(--bg-dark);
  border-bottom: 1px solid var(--rule-strong);
}
.statement-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 2rem;
}
.statement-grid .eyebrow { color: var(--accent-soft); }
.statement {
  max-width: 32ch;
  margin: 0;
  font: 500 clamp(1.45rem, 2.6vw, 2.15rem)/1.16 var(--display);
  letter-spacing: -.025em;
  color: #f7f4ec;
}
.statement-band .muted {
  color: #b8bdc4 !important;
}

.section-split {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: 3rem 4rem;
  padding-block: clamp(2.75rem, 6vw, 4.5rem);
  border-bottom: 1px solid var(--rule);
}
.section-intro h2 {
  max-width: 16ch;
  margin: 0;
  font: 600 clamp(1.55rem, 2.8vw, 2.35rem)/1.12 var(--display);
  letter-spacing: -.03em;
}
.prose { max-width: 40rem; font-size: 1.05rem; }
.prose p { margin: 0 0 1.15rem; color: var(--ink-2); }
.prose p:last-child { margin-bottom: 0; }
.prose .muted, .muted { color: var(--ink-2); }

.principle-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--rule-strong);
}
.principle-list li {
  display: grid;
  grid-template-columns: 3.25rem 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule);
}
.number, .meta-label {
  color: var(--accent);
  font: 500 .68rem/1.3 var(--meta);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.principle-list h3 {
  margin: 0 0 .35rem;
  font: 600 1rem/1.3 var(--body);
}
.principle-list p {
  margin: 0;
  max-width: 36rem;
  color: var(--ink-2);
  font-size: .95rem;
}

/* Research teaser band — authority blue (not red flood) */
.record-band {
  padding-block: clamp(2.75rem, 6vw, 4.5rem);
  color: #eef4f7;
  background: var(--accent-dark);
}
.record-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem 4rem;
}
.record-grid .eyebrow, .record-status { color: var(--accent-soft); }
.record-grid h2 {
  max-width: 14ch;
  margin: 0;
  font: 600 clamp(1.55rem, 2.8vw, 2.35rem)/1.12 var(--display);
  letter-spacing: -.03em;
  color: #f7f4ec;
}
.record-card {
  align-self: end;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(255, 255, 255, .28);
}
.record-type {
  color: var(--accent-soft);
  font: 500 .7rem/1.3 var(--meta);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin: 0;
}
.record-title {
  margin: .65rem 0 1rem;
  font: 500 1.45rem/1.18 var(--display);
  color: #f7f4ec;
}
.record-card > p:not(.record-type):not(.record-title) {
  max-width: 32rem;
  color: #c5d0d8;
  margin: 0 0 1rem;
}
.record-link {
  color: #f4f7f9;
  font-weight: 600;
  text-underline-offset: .25em;
}

.page-hero {
  padding-block: clamp(2.75rem, 6vw, 4.5rem) 1.75rem;
  border-bottom: 1px solid var(--rule);
}
.page-hero h1 {
  margin: 0 0 1rem;
  font: 600 clamp(2rem, 4vw, 3rem)/1.08 var(--display);
  letter-spacing: -.03em;
}
.page-hero .lead {
  max-width: 38rem;
  margin: 0;
  color: var(--ink-2);
  font-size: 1.08rem;
}
.content-block {
  padding-block: 2.25rem var(--page-pad);
  max-width: var(--measure);
}
.content-block > :last-child { margin-bottom: 0; }
.content-block h2:not(.eyebrow) {
  margin: 2.4rem 0 .85rem;
  font: 600 clamp(1.35rem, 2vw, 1.7rem)/1.16 var(--display);
  letter-spacing: -.02em;
}
.content-block .eyebrow + p { margin-top: -.25rem; }
.stance-list { margin: 0; padding: 0; list-style: none; }
.stance-list li {
  display: grid;
  gap: .35rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--rule);
}
.notice-list { margin: 0; padding: 0; list-style: none; }
.notice-list li {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--rule);
}
.notice-list h2 {
  margin: 0 0 .35rem !important;
  font: 600 1rem/1.35 var(--body) !important;
  letter-spacing: 0 !important;
}
.notice-list p {
  max-width: var(--measure);
  margin: 0;
  color: var(--ink-2);
}
.stance-list strong { font-size: 1.05rem; }
.stance-list span { color: var(--ink-2); }
.mail-block { display: grid; gap: 1.25rem; margin: 2rem 0; }
.mail-row { display: grid; gap: .25rem; }
.mail-row a {
  color: var(--accent);
  font-weight: 600;
  font-size: 1.12rem;
}
.boundary {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
}
.section-label { margin-top: 2.5rem; }
.notice-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
  padding-block: 1.35rem;
  border-top: 1px solid var(--rule);
}
.notice-row a {
  color: var(--ink-2);
  font-size: .9rem;
  text-underline-offset: .25em;
}

.site-footer {
  margin-top: 3rem;
  padding-block: 2rem 2.75rem;
  color: #a8aeb6;
  background: var(--bg-dark);
  border-top: 2px solid var(--rule-strong);
  font: 400 .75rem/1.5 var(--meta);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  font-size: .85rem;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  color: #f0f2f4;
  font-weight: 600;
  font-family: var(--body);
}
.footer-brand img { width: 1.55rem; height: 1.55rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: .65rem 1.1rem; }
.footer-nav a { color: #8b929c; text-decoration: none; }
.footer-nav a:hover { color: #d4e2ea; }
.footer-legal {
  width: 100%;
  margin: .5rem 0 0;
  color: #6e757f;
  font-size: .78rem;
  max-width: 48rem;
}

/* —— Research index —— */
.record-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(14rem, 17rem);
  gap: 2rem 4rem;
  align-items: end;
}
.record-count {
  margin: 0;
  padding: .75rem 0;
  border-top: 2px solid var(--rule-strong);
  color: var(--ink-2);
  font-size: .92rem;
}
.record-count strong {
  display: block;
  color: var(--ink);
  font: 600 2rem/1 var(--display);
  letter-spacing: -.03em;
}
.record-standard {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}
.record-standard h2 { margin-top: 0 !important; }
.subtle-link {
  color: var(--accent);
  font-weight: 600;
  text-underline-offset: .22em;
}
.idx-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: .95rem;
}
.idx-table th, .idx-table td {
  text-align: left;
  padding: .95rem 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.idx-table th {
  font: 500 .68rem/1.3 var(--meta);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.idx-table a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  font-family: var(--display);
  font-size: 1.05rem;
}
.idx-table a:hover { text-decoration: underline; }

/* —— Research note (full apparatus) —— */
.note-meta {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr));
  gap: .75rem 1.25rem;
  margin: 1.25rem 0 1.75rem;
  padding: 1.15rem 0 1.35rem;
  border-bottom: 1px solid var(--rule);
  font: 400 .72rem/1.45 var(--meta);
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.note-hero {
  padding-block: clamp(2.75rem, 6vw, 4.5rem) 1.75rem;
  border-bottom: 1px solid var(--rule);
}
.note-hero h1 {
  max-width: 22ch;
  margin: 0 0 1.15rem;
  font: 600 clamp(1.9rem, 4vw, 2.85rem)/1.1 var(--display);
  letter-spacing: -.03em;
}
.note-abstract {
  max-width: 42rem;
  margin: 0;
  color: var(--ink-2);
  font: 400 clamp(1.05rem, 1.5vw, 1.18rem)/1.55 var(--body);
}
.note-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 17rem);
  gap: clamp(2rem, 5vw, 5rem);
  padding-block: 2.5rem var(--page-pad);
}
/* Custody panel (research only) */
.note-aside {
  align-self: start;
  padding: 1.15rem 1.1rem 1.25rem;
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent-warm);
}
.note-aside p {
  margin: 0 0 .85rem;
  color: var(--ink-2);
  font-size: .92rem;
}
.note-aside p:last-child { margin-bottom: 0; }
.note-aside .meta-label {
  color: var(--accent-warm);
  margin-bottom: .35rem;
}
.note-body {
  font-size: 1.05rem;
  max-width: 40rem;
}
.note-body h2 {
  margin: 2.1rem 0 .75rem;
  font: 600 1.28rem/1.2 var(--display);
  letter-spacing: -.02em;
}
.note-body p { color: var(--ink-2); }
.note-body ul {
  padding-left: 1.2rem;
  color: var(--ink-2);
}
.note-end {
  margin-top: 2.75rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--rule-strong);
  max-width: 40rem;
}
/* Revision gutter */
.note-end h2 {
  font: 600 .72rem/1.3 var(--meta);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin: 1.5rem 0 .65rem;
}
.note-end p, .note-end li {
  color: var(--ink-2);
  font-size: .95rem;
}
.note-end .text-link { color: var(--accent); }

.not-found {
  min-height: 55vh;
  display: grid;
  align-content: center;
  padding-block: var(--page-pad);
}
.not-found h1 {
  max-width: 14ch;
  margin: 0 0 1rem;
  font: 600 clamp(2.5rem, 6vw, 4.5rem)/.96 var(--display);
  letter-spacing: -.04em;
}
.not-found .lead {
  max-width: 36rem;
  color: var(--ink-2);
  font-size: 1.08rem;
}

@media (max-width: 800px) {
  .frame { width: min(calc(100% - 2rem), var(--frame)); }
  .header-inner {
    min-height: auto;
    padding-block: 1rem .75rem;
    flex-wrap: wrap;
  }
  nav.primary { width: 100%; }
  nav.primary a {
    font-size: .82rem;
    min-height: 2.75rem;
    margin-right: .7rem;
  }
  .hero, .statement-grid, .section-split, .record-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
  .hero { padding-block: 2.75rem 2.25rem; }
  .hero h1 { max-width: 12ch; }
  .principle-list li { grid-template-columns: 3rem 1fr; }
  .record-intro, .note-layout { grid-template-columns: 1fr; }
  .note-layout { gap: 1.5rem; }
  .note-aside { order: 2; }
  .note-meta { grid-template-columns: 1fr; }
  .idx-table { display: block; width: 100%; border: 0; }
  .idx-table thead {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0); border: 0;
  }
  .idx-table tbody, .idx-table tr, .idx-table td { display: block; width: 100%; }
  .idx-table tr {
    margin: 0 0 1.25rem;
    padding: 0 0 1.1rem;
    border-bottom: 1px solid var(--rule);
  }
  .idx-table td { padding: .2rem 0; border: 0; }
  .idx-table td::before {
    display: block;
    margin-bottom: .15rem;
    color: var(--ink-3);
    font: 500 .68rem/1.3 var(--meta);
    letter-spacing: .06em;
    text-transform: uppercase;
    content: attr(data-label);
  }
  .idx-table td:last-child { margin-top: .45rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn-primary:hover { filter: none; }
}

@media print {
  .site-header, .site-footer, .skip-link, nav.primary, .note-aside { display: none; }
  body { background: white; color: black; }
  .note-body, .note-end, .note-hero { max-width: 100%; }
  a { text-decoration: none; color: black; }
}