/* ==========================================================================
   Wolverine Medicine — Neubrutalism CSS
   Palette: electric blue #1E63E8 (BPC-157), hot red #F4364C (TB-500),
   acid yellow #FFD400 (stack + CTA), ink #0A0A0A, off-white #F4F5F7
   ========================================================================== */

/* Google Fonts imported via <link> in each page head */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
  --primary:          #1E63E8;
  --primary-50:       #E4ECFD;
  --primary-700:      #1547B0;
  --primary-900:      #0C2E78;
  --secondary:        #F4364C;
  --secondary-50:     #FCE1E4;
  --secondary-900:    #8E1421;
  --accent:           #FFD400;
  --accent-700:       #C9A700;
  --ink:              #0A0A0A;
  --neutral-50:       #F4F5F7;
  --neutral-100:      #E8EAEE;
  --neutral-200:      #D6DAE1;
  --neutral-300:      #B7BDC8;
  --neutral-500:      #6B7280;
  --neutral-700:      #3A3F49;
  --neutral-900:      #16181D;
  --bg:               #F4F5F7;
  --surface:          #FFFFFF;
  --surface-sunken:   #E8EAEE;
  --text:             #0A0A0A;
  --text-muted:       #3A3F49;
  --text-on-ink:      #F4F5F7;
  --border-hard:      #0A0A0A;
  --shadow-hard:      #0A0A0A;

  --font-heading:     'Archivo Black', 'Arial Black', 'Helvetica Neue', Impact, sans-serif;
  --font-body:        'Space Grotesk', 'Helvetica Neue', Arial, system-ui, sans-serif;
  --font-mono:        'Space Mono', 'JetBrains Mono', 'Courier New', monospace;

  --max-width:        74rem;
  --container-px:     clamp(1rem, 3.5vw, 2.25rem);

  --border-width:     3px;
  --shadow-offset:    5px;
  --shadow-sm:        4px 4px 0 var(--shadow-hard);
  --shadow-md:        5px 5px 0 var(--shadow-hard);
  --shadow-lg:        6px 6px 0 var(--shadow-hard);
  --radius:           0;
  --transition:       120ms ease-out;
}

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
}

/* --------------------------------------------------------------------------
   Typography Scale
   -------------------------------------------------------------------------- */
h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.875rem, 4.2vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  font-weight: 400;
}

h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.125rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  font-weight: 400;
}

h3 {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  line-height: 1.1;
  letter-spacing: -0.015em;
  font-weight: 400;
}

h4 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  font-weight: 400;
}

p {
  max-width: 66ch;
}

.lede {
  font-size: 1.1875rem;
  line-height: 1.55;
  color: var(--text-muted);
  max-width: 58ch;
}

small,
.small {
  font-size: 0.875rem;
  line-height: 1.5;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
}

code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
}

code {
  font-size: 0.9em;
  background: var(--surface-sunken);
  border: 2px solid var(--border-hard);
  padding: 0.125rem 0.4rem;
  border-radius: var(--radius);
}

.eyebrow {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 2.6vw, 1.625rem);
  letter-spacing: -0.01em;
  text-transform: uppercase;
  line-height: 1;
}

.section-numeral {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 7vw, 5rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 2px var(--ink);
  text-stroke: 2px var(--ink);
}

.uppercase-label {
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

.reading-col {
  max-width: 66ch;
}

/* --------------------------------------------------------------------------
   Header & Nav
   -------------------------------------------------------------------------- */
.site-header {
  background: var(--bg);
  border-bottom: var(--border-width) solid var(--border-hard);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 4px 0 var(--shadow-hard);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1rem;
}

.site-brand {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text);
  line-height: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.brand-word {
  display: inline-block;
}

.brand-word.accent {
  background: var(--accent);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: 4px 4px 0 var(--shadow-hard);
  padding: 0.125rem 0.5rem;
}

.site-nav {
  display: none;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-list a {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.375rem 0.625rem;
  display: block;
  border: 2px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  background: var(--surface-sunken);
  border-color: var(--border-hard);
}

.nav-list a[aria-current="page"] {
  background: var(--primary);
  border: 2px solid var(--border-hard);
  color: var(--surface);
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: var(--border-width) solid var(--border-hard);
  padding: 0.5rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.nav-toggle:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--shadow-hard);
}

.nav-toggle span {
  display: block;
  width: 1.5rem;
  height: 3px;
  background: var(--ink);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  border-top: var(--border-width) solid var(--border-hard);
  background: var(--surface);
}

.mobile-menu.open {
  display: block;
}

.mobile-menu .nav-list {
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  padding: 0.75rem var(--container-px);
}

.mobile-menu .nav-list a {
  padding: 0.75rem 0;
  border: none;
  border-bottom: 1px solid var(--neutral-200);
  font-size: 1rem;
}

.mobile-menu .nav-list a[aria-current="page"] {
  background: none;
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
}

@media (min-width: 768px) {
  .site-nav {
    display: block;
  }

  .nav-toggle {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  padding-block: clamp(3rem, 7vw, 5rem) clamp(2.5rem, 5vw, 4rem);
}

.hero-inner {
  display: grid;
  gap: 2.5rem;
}

.hero-eyebrow-tag {
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: 5px 5px 0 var(--shadow-hard);
  padding: 0.4rem 1rem;
  margin-bottom: 1.25rem;
}

.hero-eyebrow-tag .eyebrow {
  font-size: clamp(0.875rem, 2vw, 1.375rem);
  color: var(--ink);
}

.hero-h1-col {
  max-width: 52ch;
}

.hero h1 {
  margin-bottom: 1.25rem;
}

.hero .lede {
  margin-bottom: 1.75rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-figure {
  margin: 0;
}

.hero-figure img {
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: auto;
}

.hero-figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

@media (min-width: 900px) {
  .hero-inner {
    grid-template-columns: 58fr 42fr;
    align-items: start;
  }
}

/* --------------------------------------------------------------------------
   Data Strip
   -------------------------------------------------------------------------- */
.data-strip {
  border-top: var(--border-width) solid var(--border-hard);
  border-bottom: var(--border-width) solid var(--border-hard);
  padding-block: 1.5rem;
  margin-block: 2rem 3rem;
}

.data-strip-inner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}

.stat-block {
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-md);
  padding: 1.25rem;
  background: var(--surface);
}

.stat-block:nth-child(odd) {
  background: var(--surface-sunken);
}

.stat-block-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.stat-block-value {
  font-family: var(--font-mono);
  font-size: clamp(1.375rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--text);
}

.stat-block-unit {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

@media (min-width: 640px) {
  .data-strip-inner {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: var(--border-width) solid var(--border-hard);
  border-radius: var(--radius);
  padding: 0.8125rem 1.625rem;
  line-height: 1;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: var(--ink);
  box-shadow: 5px 5px 0 var(--shadow-hard);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  transform: translate(3px, 3px);
  box-shadow: 2px 2px 0 var(--shadow-hard);
}

.btn-primary:active {
  transform: translate(5px, 5px);
  box-shadow: 0 0 0 var(--shadow-hard);
}

.btn-secondary {
  background: var(--surface);
  color: var(--ink);
  box-shadow: 4px 4px 0 var(--shadow-hard);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: var(--surface-sunken);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--shadow-hard);
}

.btn-secondary:active {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 var(--shadow-hard);
}

/* --------------------------------------------------------------------------
   Chips
   -------------------------------------------------------------------------- */
.chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  border: var(--border-width) solid var(--border-hard);
  border-radius: var(--radius);
  padding: 0.3125rem 0.75rem;
  line-height: 1;
  white-space: nowrap;
}

.chip-bpc157 {
  background: var(--primary);
  color: var(--surface);
  box-shadow: 3px 3px 0 var(--shadow-hard);
}

.chip-tb500 {
  background: var(--secondary);
  color: var(--surface);
  box-shadow: 3px 3px 0 var(--shadow-hard);
}

.chip-stack {
  background: var(--accent);
  color: var(--ink);
  box-shadow: 3px 3px 0 var(--shadow-hard);
}

.chip-wada {
  background: var(--ink);
  color: var(--text-on-ink);
  box-shadow: 3px 3px 0 var(--shadow-hard);
}

.chip-status {
  background: var(--secondary);
  color: var(--surface);
  box-shadow: 3px 3px 0 var(--shadow-hard);
}

.chip-research {
  background: var(--surface-sunken);
  color: var(--ink);
  border: 2px solid var(--border-hard);
}

/* inline citation chip */
.citation-ref {
  display: inline-flex;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  background: var(--surface-sunken);
  border: 2px solid var(--border-hard);
  padding: 0.1rem 0.35rem;
  line-height: 1.3;
  text-decoration: none;
  color: var(--text);
  vertical-align: super;
  transition: background var(--transition);
}

.citation-ref:hover {
  background: var(--accent);
}

/* --------------------------------------------------------------------------
   Section Layout
   -------------------------------------------------------------------------- */
.page-main {
  padding-block: 2rem 4rem;
}

.section {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-opener {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: var(--border-width) solid var(--border-hard);
}

.section-opener h2 {
  text-transform: uppercase;
}

.section-rule {
  border: none;
  border-top: var(--border-width) solid var(--border-hard);
  margin-block: 2.5rem;
}

/* page with sidebar */
.page-layout {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 1024px) {
  .page-layout {
    grid-template-columns: 1fr 22rem;
    align-items: start;
  }

  .page-layout-main {
    min-width: 0;
  }
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--surface);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translate(2px, 2px);
  box-shadow: 3px 3px 0 var(--shadow-hard);
}

.card-header {
  margin: -1.5rem -1.5rem 1.25rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.card-header-blue {
  background: var(--primary);
  color: var(--surface);
}

.card-header-red {
  background: var(--secondary);
  color: var(--surface);
}

.card-header-yellow {
  background: var(--accent);
  color: var(--ink);
}

.card-header-ink {
  background: var(--ink);
  color: var(--text-on-ink);
}

.card-header-muted {
  background: var(--surface-sunken);
  color: var(--text);
  border-bottom: 2px solid var(--border-hard);
}

/* Finding card */
.finding-card {
  background: var(--surface);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-md);
  margin-bottom: 1.5rem;
}

.finding-card-bar {
  padding: 0.6rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.finding-card-bar.blue { background: var(--primary); color: var(--surface); }
.finding-card-bar.red  { background: var(--secondary); color: var(--surface); }
.finding-card-bar.yellow { background: var(--accent); color: var(--ink); }

.finding-card-body {
  padding: 1.25rem;
}

.finding-card-body h4 {
  margin-bottom: 0.5rem;
}

.finding-card-body p {
  margin-bottom: 0.75rem;
  max-width: none;
}

/* Caveat block */
.caveat-block {
  background: var(--secondary);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-md);
  padding: 1.25rem 1.5rem;
  margin-block: 1.5rem;
}

.caveat-block.ink {
  background: var(--ink);
}

.caveat-block-heading {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  text-transform: uppercase;
  color: var(--surface);
  margin-bottom: 0.5rem;
  letter-spacing: 0.04em;
}

.caveat-block p {
  color: var(--surface);
  font-size: 0.9375rem;
  max-width: none;
}

/* Quiet block */
.quiet-block {
  background: var(--surface-sunken);
  border: var(--border-width) solid var(--border-hard);
  padding: 1.25rem 1.5rem;
  margin-block: 1.5rem;
}

/* Callout */
.callout {
  background: var(--surface);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-md);
  display: flex;
  margin-block: 1.5rem;
}

.callout-bar {
  width: 12px;
  flex-shrink: 0;
}

.callout-bar.blue { background: var(--primary); }
.callout-bar.yellow { background: var(--accent); }
.callout-bar.red { background: var(--secondary); }
.callout-bar.ink { background: var(--ink); }

.callout-body {
  padding: 1rem 1.25rem;
}

.callout-eyebrow {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.callout p {
  margin: 0;
  font-size: 0.9375rem;
  max-width: none;
}

/* --------------------------------------------------------------------------
   Spec Rail (sidebar)
   -------------------------------------------------------------------------- */
.spec-rail {
  display: none;
}

@media (min-width: 1024px) {
  .spec-rail {
    display: block;
    position: sticky;
    top: calc(4.5rem + 1rem);
  }
}

.toc-card {
  background: var(--surface);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-md);
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.toc-card-header {
  background: var(--primary);
  color: var(--surface);
  padding: 0.75rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.toc-card nav {
  padding: 0.75rem 1.25rem;
}

.toc-card nav a {
  display: block;
  font-size: 0.875rem;
  color: var(--text);
  text-decoration: none;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--neutral-200);
  transition: color var(--transition);
}

.toc-card nav a:last-child {
  border-bottom: none;
}

.toc-card nav a:hover {
  color: var(--primary);
}

.rail-stat-block {
  background: var(--surface);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-sm);
  padding: 1rem;
  margin-bottom: 1rem;
}

.rail-stat-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.rail-stat-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

/* --------------------------------------------------------------------------
   Content Prose
   -------------------------------------------------------------------------- */
.content-prose {
  background: var(--surface);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-md);
  padding: 1.75rem 2rem;
  margin-bottom: 1.5rem;
  max-width: 66ch;
}

.content-prose h2 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
}

.content-prose h2:first-child {
  margin-top: 0;
}

.content-prose h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  margin-top: 1.25rem;
}

.content-prose p {
  margin-bottom: 1rem;
  max-width: none;
}

.content-prose p:last-child {
  margin-bottom: 0;
}

.content-prose ul,
.content-prose ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.content-prose li {
  margin-bottom: 0.4rem;
}

.content-prose strong {
  font-weight: 700;
}

.content-prose em {
  font-style: italic;
}

/* page-header image */
.page-header-img {
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: auto;
  margin-bottom: 2rem;
}

/* --------------------------------------------------------------------------
   Tables (DataTables)
   -------------------------------------------------------------------------- */
.table-wrapper {
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-md);
  background: var(--surface);
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

table thead tr {
  background: var(--primary);
}

table thead th {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--surface);
  padding: 1rem;
  text-align: left;
  border-bottom: var(--border-width) solid var(--border-hard);
  font-weight: 400;
}

table tbody tr {
  border-bottom: 1px solid var(--neutral-200);
}

table tbody tr:hover {
  background: var(--surface-sunken);
}

table tbody td {
  padding: 0.875rem 1rem;
  font-size: 0.9375rem;
  vertical-align: top;
}

/* DataTables overrides */
.dataTables_wrapper .dataTables_length select,
.dataTables_wrapper .dataTables_filter input {
  border: var(--border-width) solid var(--border-hard);
  border-radius: var(--radius);
  box-shadow: 3px 3px 0 var(--shadow-hard);
  padding: 0.375rem 0.625rem;
  font-family: var(--font-body);
  background: var(--surface);
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
  border: 2px solid var(--border-hard) !important;
  border-radius: 0 !important;
  background: var(--surface) !important;
  color: var(--text) !important;
  padding: 0.375rem 0.75rem !important;
  margin: 0 0.125rem !important;
  cursor: pointer;
  box-shadow: 2px 2px 0 var(--shadow-hard) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
  background: var(--surface-sunken) !important;
  color: var(--text) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current,
.dataTables_wrapper .dataTables_paginate .paginate_button.current:hover {
  background: var(--accent) !important;
  border-color: var(--border-hard) !important;
  color: var(--ink) !important;
  box-shadow: 2px 2px 0 var(--shadow-hard) !important;
}

/* --------------------------------------------------------------------------
   FAQ
   -------------------------------------------------------------------------- */
.faq-item {
  background: var(--surface);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-sm);
  margin-bottom: 0.75rem;
}

.faq-question {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  padding: 1.125rem 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  color: var(--text);
  line-height: 1.2;
  transition: background var(--transition);
}

.faq-question:hover {
  background: var(--surface-sunken);
}

.faq-question[aria-expanded="true"] {
  background: var(--surface-sunken);
  border-bottom: 2px solid var(--border-hard);
}

.faq-chevron {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-question[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 1.25rem 1.5rem;
  display: none;
}

.faq-answer.open {
  display: block;
}

.faq-answer p {
  margin-bottom: 0.75rem;
  max-width: none;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   References
   -------------------------------------------------------------------------- */
.references-list {
  list-style: none;
  padding: 0;
}

.references-list li {
  padding: 1rem;
  border-bottom: 1px solid var(--neutral-200);
  font-size: 0.9375rem;
}

.references-list li:first-child {
  border-top: var(--border-width) solid var(--border-hard);
}

.ref-number {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--primary);
  margin-right: 0.5rem;
}

/* --------------------------------------------------------------------------
   Page Hero (non-index)
   -------------------------------------------------------------------------- */
.page-hero {
  padding-block: clamp(2rem, 5vw, 3.5rem);
  border-bottom: var(--border-width) solid var(--border-hard);
  margin-bottom: 2.5rem;
}

.page-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  max-width: 52ch;
  margin-bottom: 0.75rem;
}

.page-hero .lede {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Breadcrumb
   -------------------------------------------------------------------------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.breadcrumb-sep {
  color: var(--neutral-300);
}

/* --------------------------------------------------------------------------
   Contact Form
   -------------------------------------------------------------------------- */
.contact-form {
  background: var(--surface);
  border: var(--border-width) solid var(--border-hard);
  box-shadow: var(--shadow-md);
  padding: 2rem;
  max-width: 44rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 0.4rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--surface);
  border: var(--border-width) solid var(--border-hard);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: var(--font-body);
  transition: box-shadow var(--transition);
  box-shadow: 3px 3px 0 var(--shadow-hard);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
  box-shadow: 1px 1px 0 var(--shadow-hard);
}

.form-textarea {
  min-height: 9rem;
  resize: vertical;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--ink);
  border-top: 4px solid var(--accent);
  padding-block: 2.5rem 2rem;
  margin-top: 3rem;
}

.footer-disclaimer {
  font-size: 0.875rem;
  font-style: italic;
  color: var(--text-on-ink);
  opacity: 0.85;
  margin-bottom: 2rem;
  max-width: 66ch;
}

.footer-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (min-width: 640px) {
  .footer-cols {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-col-heading {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.375rem;
}

.footer-col ul a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-on-ink);
  opacity: 0.8;
  text-decoration: none;
  transition: opacity var(--transition);
  display: inline-block;
}

.footer-col ul a:hover {
  opacity: 1;
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 3px;
}

.footer-copyright {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-on-ink);
  opacity: 0.5;
  border-top: 1px solid rgba(244, 245, 247, 0.15);
  padding-top: 1.25rem;
}

/* --------------------------------------------------------------------------
   404
   -------------------------------------------------------------------------- */
.error-page {
  min-height: calc(100vh - 10rem);
  display: flex;
  align-items: center;
  padding-block: 4rem;
}

.error-code {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 15vw, 8rem);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 3px var(--ink);
  text-stroke: 3px var(--ink);
  line-height: 1;
  margin-bottom: 1rem;
}

/* --------------------------------------------------------------------------
   Utility
   -------------------------------------------------------------------------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.text-muted {
  color: var(--text-muted);
}

.mt-1  { margin-top: 0.5rem; }
.mt-2  { margin-top: 1rem; }
.mt-3  { margin-top: 1.5rem; }
.mt-4  { margin-top: 2rem; }
.mb-1  { margin-bottom: 0.5rem; }
.mb-2  { margin-bottom: 1rem; }
.mb-3  { margin-bottom: 1.5rem; }
.mb-4  { margin-bottom: 2rem; }

/* --------------------------------------------------------------------------
   Focus styles (accessibility)
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .btn:hover,
  .btn:focus-visible,
  .btn:active,
  .card:hover {
    transform: none !important;
  }
}