:root {
  --bg: oklch(0.18 0.018 245);
  --page-ink: oklch(0.155 0.021 245);
  --page-ink-raised: oklch(0.2 0.024 245);
  --surface: oklch(0.225 0.02 245);
  --surface-raised: oklch(0.255 0.022 245);
  --fg: oklch(0.91 0.018 80);
  --muted: oklch(0.72 0.023 240);
  --border: oklch(0.38 0.023 245);
  --accent: oklch(0.72 0.095 235);
  --accent-hover: oklch(0.78 0.085 235);
  --gold: oklch(0.76 0.1 82);
  --signal: oklch(0.78 0.12 215);
  --signal-dim: oklch(0.44 0.07 220);
  --grid-line: color-mix(in oklch, var(--accent) 16%, transparent);
  --halo: color-mix(in oklch, var(--accent) 20%, transparent);
  --danger: oklch(0.68 0.11 25);
  --focus: oklch(0.84 0.11 225);
  --font-display: "Iowan Old Style", Charter, "Palatino Linotype", Georgia, serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  --container: 1200px;
  --reading: 740px;
  --gutter: clamp(20px, 4vw, 32px);
  --radius-sm: 6px;
  --radius: 10px;
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 72px;
  color-scheme: dark;
}

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

html {
  min-width: 0;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  position: relative;
  min-width: 0;
  margin: 0;
  overflow-x: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 82% -12%, color-mix(in oklch, var(--accent) 12%, transparent), transparent 34rem),
    radial-gradient(circle at 8% 36%, color-mix(in oklch, var(--gold) 6%, transparent), transparent 28rem),
    var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.68;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: 0;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black, transparent 56rem);
  opacity: 0.36;
  content: "";
}

body > * {
  position: relative;
  z-index: 1;
}

body.nav-open {
  overflow: hidden;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

p,
ul,
ol,
blockquote {
  margin-top: 0;
}

p,
li {
  text-wrap: pretty;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--fg);
  font-family: var(--font-display);
  font-weight: 600;
  text-wrap: balance;
}

h1 {
  max-width: 16ch;
  font-size: clamp(2.45rem, 6vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.022em;
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  line-height: 1.25;
  letter-spacing: -0.012em;
}

.container {
  width: min(100%, calc(var(--container) + (var(--gutter) * 2)));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.reading {
  width: min(100%, var(--reading));
}

.section {
  padding-block: clamp(52px, 8vw, 92px);
  border-top: 1px solid var(--border);
}

.section:first-child {
  border-top: 0;
}

.section-compact {
  padding-block: clamp(36px, 6vw, 60px);
}

.stack > * + * {
  margin-top: var(--space-4);
}

.stack-tight > * + * {
  margin-top: var(--space-2);
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: var(--space-4);
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  transform: translateY(-160%);
  min-height: 44px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--focus);
  color: var(--bg);
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklch, var(--bg) 94%, transparent);
  backdrop-filter: blur(14px);
}

.site-header::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), var(--signal), transparent);
  box-shadow: 0 0 18px var(--halo);
  content: "";
  opacity: 0.72;
}

.header-inner {
  position: relative;
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 11px;
  color: var(--fg);
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.012em;
  text-decoration: none;
}

.brand:hover {
  color: var(--fg);
  text-decoration: none;
}

.brand-mark {
  width: 27px;
  height: 27px;
  flex: 0 0 auto;
  color: var(--gold);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
}

.site-nav a {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid transparent;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  border-bottom-color: var(--accent);
  color: var(--fg);
  text-decoration: none;
}

.menu-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--fg);
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 700;
}

.menu-toggle:hover {
  border-color: var(--accent);
  background: var(--surface-raised);
  color: var(--fg);
}

.menu-icon {
  position: relative;
  width: 16px;
  height: 12px;
}

.menu-icon::before,
.menu-icon::after {
  position: absolute;
  left: 0;
  width: 16px;
  height: 1px;
  background: currentColor;
  content: "";
}

.menu-icon::before {
  top: 2px;
}

.menu-icon::after {
  bottom: 2px;
}

.kicker,
.meta,
.status-badge,
.card-index,
.table-label {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.055em;
}

.kicker {
  margin: 0 0 var(--space-3);
  color: var(--gold);
  font-weight: 700;
  text-transform: uppercase;
}

.lead {
  max-width: 58ch;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.06rem, 2vw, 1.22rem);
  line-height: 1.62;
}

.meta {
  color: var(--gold);
  line-height: 1.55;
}

.prototype-label {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 3px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.hero-home {
  position: relative;
  overflow: clip;
  padding-block: clamp(58px, 6vw, 84px) clamp(66px, 7vw, 96px);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(260px, 0.72fr);
  align-items: center;
  gap: clamp(48px, 8vw, 104px);
}

.hero-copy .lead {
  margin-top: var(--space-4);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.btn {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 750;
  line-height: 1.25;
  text-decoration: none;
  transition: background-color 150ms ease, border-color 150ms ease, transform 150ms ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent), var(--signal));
  color: var(--bg);
  box-shadow: 0 8px 24px color-mix(in oklch, var(--accent) 20%, transparent);
}

.btn-primary:hover {
  border-color: var(--accent-hover);
  background: linear-gradient(135deg, var(--accent-hover), var(--signal));
  color: var(--bg);
}

.btn-secondary {
  border-color: var(--border);
  background: transparent;
  color: var(--fg);
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: var(--surface);
  color: var(--fg);
}

.text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 8px;
  font-weight: 750;
}

.text-link::after {
  content: "→";
}

.field-plate {
  position: relative;
  display: grid;
  aspect-ratio: 1 / 1;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at center, transparent 0 19%, color-mix(in oklch, var(--border) 72%, transparent) 19.4% 19.8%, transparent 20.2% 37%, color-mix(in oklch, var(--border) 55%, transparent) 37.4% 37.8%, transparent 38.2%),
    repeating-linear-gradient(120deg, transparent 0 28px, color-mix(in oklch, var(--border) 34%, transparent) 29px 30px),
    var(--surface);
}

.field-plate::before {
  width: 38%;
  aspect-ratio: 1;
  border: 1px solid var(--gold);
  content: "";
  transform: rotate(45deg);
}

.field-plate::after {
  position: absolute;
  width: 7px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 9px var(--surface), 0 0 0 10px var(--border);
  content: "";
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: var(--space-6);
  align-items: end;
  margin-bottom: var(--space-6);
}

.section-heading .lead {
  justify-self: end;
}

.card {
  position: relative;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.task-card,
.guide-card,
.info-card {
  padding: clamp(22px, 3vw, 30px);
}

.task-card,
.guide-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  color: var(--fg);
  text-decoration: none;
  transition: background-color 150ms ease, border-color 150ms ease, transform 150ms ease;
}

.task-card {
  overflow: hidden;
  border-color: color-mix(in oklch, var(--border) 86%, var(--gold));
}

.task-card::before {
  position: absolute;
  top: 0;
  right: 22px;
  left: 22px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), var(--signal), transparent);
  content: "";
  opacity: 0.78;
}

.task-card:hover,
.guide-card:hover {
  border-color: var(--accent);
  background: var(--surface-raised);
  color: var(--fg);
  text-decoration: none;
  box-shadow: 0 14px 32px color-mix(in oklch, var(--bg) 68%, transparent), inset 0 1px 0 color-mix(in oklch, var(--fg) 7%, transparent);
  transform: translateY(-2px);
}

.card-index {
  margin-bottom: var(--space-4);
  color: var(--gold);
}

.task-card p,
.guide-card p,
.info-card p {
  margin: var(--space-2) 0 0;
  color: var(--muted);
}

.card-action {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: auto;
  padding-top: var(--space-5);
  color: var(--accent);
  font-weight: 750;
}

.card-action::after {
  content: "↗";
}

.fact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(40px, 8vw, 96px);
  align-items: start;
}

.fact-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.fact-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: var(--space-3);
  padding-block: var(--space-4);
  border-top: 1px solid var(--border);
}

.fact-list li:first-child {
  border-top-color: var(--fg);
}

.fact-number {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.guide-list {
  border-top: 1px solid var(--fg);
}

.guide-row {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: center;
  min-height: 88px;
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--border);
  color: var(--fg);
  text-decoration: none;
}

.guide-row:hover {
  color: var(--fg);
  text-decoration: none;
}

.guide-row:hover h3 {
  color: var(--accent-hover);
}

.guide-row .meta {
  color: var(--muted);
}

.guide-row .row-arrow {
  color: var(--accent);
  font-size: 1.25rem;
}

.guide-row h3 {
  transition: color 150ms ease;
}

.verify-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--border);
}

.verify-step {
  min-width: 0;
  padding: clamp(22px, 3vw, 30px);
  background: var(--surface);
}

.verify-step strong {
  display: block;
  margin-bottom: var(--space-2);
  font-family: var(--font-display);
  font-size: 1.28rem;
}

.verify-step p {
  margin: 0;
  color: var(--muted);
}

.disclosure {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-5);
  align-items: center;
  padding: var(--space-5);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-raised);
}

.disclosure p {
  margin: 6px 0 0;
  color: var(--muted);
}

.breadcrumb {
  padding-top: var(--space-5);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 0.85rem;
}

.breadcrumb li + li::before {
  margin-right: 8px;
  color: var(--border);
  content: "/";
}

.breadcrumb a {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
}

.breadcrumb [aria-current="page"] {
  color: var(--fg);
}

.article-hero {
  position: relative;
  isolation: isolate;
  overflow: clip;
  padding-block: clamp(42px, 5.4vw, 72px);
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(90deg, color-mix(in oklch, var(--page-ink) 94%, transparent), transparent 68%),
    var(--page-ink);
}

.article-hero::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    linear-gradient(90deg, color-mix(in oklch, var(--gold) 36%, transparent) 0 1px, transparent 1px 100%),
    linear-gradient(var(--grid-line) 1px, transparent 1px);
  background-position: right 9% top, right top;
  background-size: 180px 100%, 100% 34px;
  mask-image: linear-gradient(90deg, black, transparent 88%);
  content: "";
  opacity: 0.38;
}

.article-hero > .container {
  position: relative;
}

.article-hero h1 {
  max-width: 15.5ch;
  font-size: clamp(2.35rem, 4.8vw, 4.35rem);
}

.article-hero .lead {
  margin-top: var(--space-4);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid color-mix(in oklch, var(--border) 70%, transparent);
}

.status-badge {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--gold);
  font-weight: 700;
  text-transform: uppercase;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--reading)) minmax(220px, 1fr);
  gap: clamp(48px, 7vw, 76px);
  align-items: start;
}

.article-flow > * + * {
  margin-top: var(--space-6);
}

.content-block > * + * {
  margin-top: var(--space-3);
}

.content-block h2 {
  padding-top: 4px;
}

.content-block h3 {
  margin-top: var(--space-5);
}

.content-block p,
.content-block li {
  color: var(--muted);
}

.content-block strong {
  color: var(--fg);
}

.quick-answer {
  position: relative;
  display: grid;
  grid-template-columns: 164px minmax(0, 1fr);
  gap: var(--space-4);
  padding: clamp(22px, 4vw, 32px);
  overflow: hidden;
  border: 1px solid color-mix(in oklch, var(--border) 76%, var(--signal));
  border-radius: var(--radius);
  background: var(--surface-raised);
}

.quick-answer::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 52px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--signal));
  content: "";
}

.quick-answer h2 {
  position: relative;
  font-size: 1.35rem;
}

.quick-answer h2::before {
  display: block;
  margin-bottom: 8px;
  color: var(--gold);
  content: "01 / FIELD ANSWER";
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.08em;
}

.quick-answer p {
  margin: 0;
  color: var(--fg);
  font-size: 1.03rem;
}

.status-note {
  padding: var(--space-4);
  border: 1px solid color-mix(in oklch, var(--border) 86%, var(--gold));
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: color-mix(in oklch, var(--surface) 90%, var(--gold));
}

.status-note strong {
  display: block;
  margin-bottom: 6px;
  color: var(--gold);
}

.status-note p {
  margin: 0;
  color: var(--muted);
}

.editorial-list {
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: field-step;
}

.editorial-list li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: var(--space-3);
  padding-block: var(--space-4);
  border-top: 1px solid var(--border);
  counter-increment: field-step;
}

.editorial-list li::before {
  color: var(--gold);
  content: counter(field-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.editorial-list strong {
  display: block;
  margin-bottom: 4px;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border-top: 1px solid var(--fg);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 660px;
  border-collapse: collapse;
  font-size: 0.91rem;
}

.data-table th,
.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.data-table td {
  color: var(--muted);
}

.data-table td strong {
  color: var(--fg);
}

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

.rail {
  position: sticky;
  top: 104px;
  padding-top: var(--space-2);
}

.rail-card {
  padding: var(--space-4);
  border-top: 1px solid var(--fg);
  border-bottom: 1px solid var(--border);
}

.rail-card + .rail-card {
  margin-top: var(--space-4);
}

.rail-card h2 {
  font-size: 1.15rem;
}

.rail-card p,
.rail-card li {
  color: var(--muted);
  font-size: 0.9rem;
}

.rail-card ul {
  margin: var(--space-3) 0 0;
  padding-left: 18px;
}

.source-list {
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.source-list li {
  padding-block: var(--space-3);
  border-top: 1px solid var(--border);
}

.source-list li:first-child {
  border-top-color: var(--fg);
}

.source-list a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-weight: 700;
}

.source-detail {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.86rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.related-card {
  display: block;
  min-height: 132px;
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--fg);
  text-decoration: none;
}

.related-card:hover {
  border-color: var(--accent);
  background: var(--surface-raised);
  color: var(--fg);
  text-decoration: none;
}

.related-card span {
  display: block;
  margin-bottom: 6px;
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.related-card strong {
  font-family: var(--font-display);
  font-size: 1.16rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding-block: var(--space-6);
  background: var(--surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-5);
  align-items: start;
}

.footer-brand {
  max-width: 50ch;
}

.footer-brand p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 20px;
}

.footer-nav a {
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.88rem;
  font-weight: 700;
}

.footer-status {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
}

/* Content-media layer. This extends the approved prototype without changing its core visual system. */
.hero-grid-media {
  grid-template-columns: minmax(0, 0.94fr) minmax(420px, 1.06fr);
  gap: clamp(36px, 6vw, 82px);
}

.hero-home h1 {
  max-width: 13.5ch;
  font-size: clamp(3rem, 4.6vw, 4.6rem);
}

.review-line {
  margin: var(--space-4) 0 0;
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.035em;
}

.content-lead {
  margin-top: var(--space-4);
}

figure {
  margin: 0;
}

.media-frame {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(145deg, color-mix(in oklch, var(--surface) 92%, var(--accent)), var(--surface));
  box-shadow: 0 18px 42px color-mix(in oklch, var(--bg) 62%, transparent);
}

.media-frame::after {
  position: absolute;
  z-index: 1;
  inset: 8px;
  border: 1px solid color-mix(in oklch, var(--fg) 11%, transparent);
  border-radius: calc(var(--radius) - 3px);
  box-shadow: inset 0 0 0 1px color-mix(in oklch, var(--accent) 8%, transparent);
  pointer-events: none;
  content: "";
}

.media-frame picture {
  display: block;
}

.media-frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--surface-raised);
}

.media-frame figcaption {
  position: relative;
  z-index: 2;
  padding: 11px 14px 13px;
  border-top: 1px solid color-mix(in oklch, var(--border) 82%, transparent);
  background: color-mix(in oklch, var(--surface) 92%, transparent);
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.map-stack {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.map-figure img {
  height: auto;
  aspect-ratio: auto;
  object-fit: contain;
}

.map-figure figcaption a {
  overflow-wrap: anywhere;
}

.media-hero img {
  min-height: 360px;
}

.media-hero {
  border-color: color-mix(in oklch, var(--gold) 42%, var(--border));
}

.field-scan {
  background:
    linear-gradient(140deg, color-mix(in oklch, var(--page-ink-raised) 88%, var(--accent)), var(--surface));
}

.field-scan.media-hero::before {
  position: absolute;
  z-index: 2;
  bottom: 22px;
  left: 22px;
  width: 74px;
  height: 34px;
  border-bottom: 1px solid var(--gold);
  border-left: 1px solid var(--gold);
  box-shadow: -7px 7px 0 -6px var(--signal);
  pointer-events: none;
  content: "";
  opacity: 0.86;
}

.field-scan img {
  filter: saturate(0.88) contrast(1.04);
}

.media-hero::before {
  position: absolute;
  z-index: 2;
  top: 18px;
  right: 18px;
  width: 52px;
  height: 52px;
  border-top: 1px solid var(--gold);
  border-right: 1px solid var(--gold);
  box-shadow: 7px -7px 0 -6px var(--signal);
  pointer-events: none;
  content: "";
  opacity: 0.9;
}

.media-wide {
  width: 100%;
}

.media-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.media-grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.video-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #000;
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.compact-list {
  margin-top: 0;
}

.class-notes-grid {
  margin-top: var(--space-4);
}

.pick-card {
  position: relative;
}

.pick-primary {
  border-color: var(--gold);
  background: linear-gradient(140deg, color-mix(in oklch, var(--surface) 88%, var(--gold)), var(--surface));
}

.link-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: center;
  margin-top: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-raised);
}

.link-panel p {
  margin: 5px 0 0;
  color: var(--muted);
}

.link-panel + .source-detail {
  margin-top: var(--space-2);
}

@media (max-width: 1080px) {
  .article-layout {
    grid-template-columns: minmax(0, var(--reading));
    justify-content: center;
  }

  .rail {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .rail-card + .rail-card {
    margin-top: 0;
  }
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: var(--gutter);
    left: var(--gutter);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    border: 1px solid var(--border);
    border-top: 0;
    border-radius: 0 0 var(--radius) var(--radius);
    background: var(--surface);
  }

  .js .site-nav {
    display: none;
  }

  .js .site-nav[data-open="true"] {
    display: flex;
  }

  .site-nav a {
    padding-inline: 12px;
    border-bottom: 0;
    border-radius: var(--radius-sm);
  }

  .site-nav a:hover,
  .site-nav a[aria-current="page"] {
    background: var(--surface-raised);
  }

  .hero-grid,
  .section-heading,
  .fact-layout {
    grid-template-columns: 1fr;
  }

  .section-heading .lead {
    justify-self: start;
  }

  .field-plate {
    width: min(100%, 440px);
    justify-self: center;
  }

  .hero-grid-media {
    grid-template-columns: 1fr;
  }

  .media-hero {
    width: min(100%, 760px);
  }

  .grid-4,
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .verify-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .header-inner {
    min-height: 64px;
  }

  .brand {
    font-size: 0.98rem;
  }

  .brand-mark {
    width: 24px;
    height: 24px;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .media-grid-2,
  .related-grid,
  .rail,
  .footer-grid,
  .disclosure,
  .link-panel {
    grid-template-columns: 1fr;
  }

  .link-panel .btn {
    width: 100%;
  }

  .hero-home {
    padding-block: 48px 58px;
  }

  .hero-home h1 {
    max-width: 14ch;
    font-size: clamp(2.5rem, 12vw, 3.25rem);
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: var(--space-4);
  }

  .hero-actions .btn {
    width: 100%;
  }

  .field-plate {
    max-width: 320px;
  }

  .section-heading {
    gap: var(--space-4);
    margin-bottom: var(--space-5);
  }

  .guide-row {
    grid-template-columns: 54px minmax(0, 1fr) auto;
    gap: var(--space-3);
  }

  .guide-row .meta {
    font-size: 0.68rem;
  }

  .quick-answer {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    justify-content: flex-start;
  }
}

@media (max-width: 360px) {
  h1 {
    font-size: 2.25rem;
  }

  .brand-mark {
    display: none;
  }

  .menu-toggle {
    padding-inline: 10px;
  }

  .guide-row {
    grid-template-columns: 1fr auto;
  }

  .guide-row .meta {
    grid-column: 1 / -1;
  }

  .hero-actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}