* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.58;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

img {
  max-width: 100%;
  height: auto;
}

.site-shell {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
}

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
  background: linear-gradient(180deg, var(--surface), var(--bg));
}

.hero__inner {
  position: relative;
  z-index: 2;
  padding: 56px 0 34px;
}

.eyebrow,
.meta,
.status,
.caption,
.source-card,
.actor-card,
.toc a,
.key-figure__label {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--ink-soft);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4 {
  font-family: "IBM Plex Serif", Georgia, serif;
  font-weight: 600;
  line-height: 1.08;
}

h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.5rem, 8vw, 6.6rem);
  letter-spacing: -0.06em;
}

.lede {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 2vw, 1.22rem);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}

.chip,
.status {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.spot-field {
  position: absolute;
  inset: 22px -8vw auto auto;
  width: min(58vw, 720px);
  opacity: 0.82;
  transform: rotate(-3deg);
}

.spot-grid {
  display: grid;
  grid-template-columns: repeat(50, 1fr);
  gap: 3px;
  aspect-ratio: 50 / 19;
  padding: 16px;
  border: 1px solid var(--rule);
  background:
    radial-gradient(circle at 16% 42%, transparent 0 16%, color-mix(in srgb, var(--accent) 8%, transparent) 28%, transparent 46%),
    var(--surface);
  box-shadow: 0 0 44px color-mix(in srgb, var(--accent) 8%, transparent);
}

.spot {
  display: block;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--rule);
}

.spot--signal {
  background: var(--signal);
  box-shadow: 0 0 10px color-mix(in srgb, var(--signal) 24%, transparent);
}

.spot--o1 {
  opacity: 0.28;
}

.spot--o2 {
  opacity: 0.46;
}

.spot--o3 {
  opacity: 0.64;
}

.spot--o4 {
  opacity: 0.82;
}

.spot-grid.glow-0 {
  background-position: 0 0;
}

.spot-grid.glow-1 {
  box-shadow: 0 0 54px color-mix(in srgb, var(--signal) 10%, transparent);
}

.spot-grid.glow-2 {
  box-shadow: 0 0 60px color-mix(in srgb, var(--accent) 12%, transparent);
}

.spot-grid.glow-3 {
  box-shadow: 0 0 66px color-mix(in srgb, var(--warn) 10%, transparent);
}

.spot-grid.glow-4 {
  box-shadow: 0 0 72px color-mix(in srgb, var(--signal) 14%, transparent);
}

.spot-grid.glow-5 {
  box-shadow: 0 0 78px color-mix(in srgb, var(--accent) 14%, transparent);
}

.toc {
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
}

.toc ol {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc a {
  display: flex;
  gap: 10px;
  min-height: 42px;
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  font-size: 0.84rem;
  text-decoration: none;
}

.toc span {
  color: var(--ink-soft);
}

.module {
  border-bottom: 1px solid var(--rule);
  background: transparent;
}

.module[open] {
  background: color-mix(in srgb, var(--surface) 58%, transparent);
}

.module__summary {
  display: grid;
  gap: 18px;
  padding: 28px 0;
  cursor: pointer;
  list-style: none;
}

.module__summary::-webkit-details-marker {
  display: none;
}

.module__summary h2 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 3.4rem);
}

.module__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.rail {
  color: var(--ink-soft);
}

.rail__number {
  display: block;
  color: var(--ink);
  font-family: "IBM Plex Serif", Georgia, serif;
  font-size: 1.5rem;
}

.rail__item {
  display: block;
  margin-top: 10px;
}

.status--data-gap,
.status--none,
.gap {
  border-color: color-mix(in srgb, var(--gap) 54%, var(--rule));
  color: var(--gap);
}

.status--thin-data,
.status--low {
  border-color: color-mix(in srgb, var(--warn) 46%, var(--rule));
  color: var(--warn);
}

.status--ok,
.status--high,
.status--medium {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--rule));
  color: var(--accent);
}

.details-body {
  padding-bottom: 38px;
}

::details-content {
  block-size: 0;
  overflow: hidden;
  transition:
    block-size 220ms ease,
    content-visibility 220ms ease allow-discrete;
}

[open]::details-content {
  block-size: auto;
}

.section-grid {
  display: grid;
  gap: 26px;
}

.content-block {
  padding: 24px 0;
  border-top: 1px solid var(--rule);
}

.content-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.content-block h3 {
  margin: 0 0 14px;
  font-size: 1.16rem;
}

.abstract {
  max-width: 820px;
  margin: 0;
  font-size: 1.07rem;
}

.key-grid,
.figure-grid,
.source-grid,
.actor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.key-figure,
.finding,
.source-card,
.actor-card {
  border: 1px solid var(--rule);
  background: var(--surface);
}

.key-figure,
.finding {
  padding: 14px;
}

.key-figure__label {
  display: block;
  color: var(--ink-soft);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.key-figure__value {
  display: block;
  margin-top: 8px;
  font-family: "IBM Plex Serif", Georgia, serif;
  font-size: 1.8rem;
  line-height: 1;
}

.key-figure__note,
.finding__label,
.caption {
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.finding__label {
  display: block;
  margin-bottom: 6px;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
}

.figure-card {
  margin: 0;
  padding: 12px;
  border: 1px solid var(--rule);
  background: var(--surface);
}

.figure-card img {
  display: block;
  width: 100%;
  border: 1px solid var(--rule);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--rule);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--ink-soft);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

.methods {
  border: 1px solid var(--rule);
  background: var(--surface);
}

.methods summary {
  padding: 14px;
  cursor: pointer;
  font-weight: 500;
}

.methods dl,
.actor-card dl {
  display: grid;
  grid-template-columns: minmax(110px, 0.34fr) 1fr;
  gap: 0;
  margin: 0;
}

.methods dt,
.methods dd,
.actor-card dt,
.actor-card dd {
  margin: 0;
  padding: 10px 14px;
  border-top: 1px solid var(--rule);
}

.methods dt,
.actor-card dt {
  color: var(--ink-soft);
}

.source-card,
.actor-card {
  padding: 14px;
  font-size: 0.82rem;
}

.source-card h4,
.actor-card h4 {
  margin: 0 0 8px;
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
}

.source-card p,
.actor-card p {
  margin: 0.4em 0;
}

.actor-section,
.methods-section,
.legal {
  padding: 44px 0;
  border-bottom: 1px solid var(--rule);
}

.actor-section details {
  border: 1px solid var(--rule);
  background: var(--surface);
}

.actor-section summary {
  padding: 16px;
  cursor: pointer;
  font-weight: 500;
}

.actor-grid {
  padding: 16px;
}

.site-footer {
  padding: 28px 0 48px;
  color: var(--ink-soft);
}

.hero--compact {
  padding-bottom: 24px;
}

.legal-page {
  padding: 32px 0 56px;
}

.legal-page__content {
  max-width: 760px;
}

.legal-block {
  margin-bottom: 40px;
}

.legal-block h2 {
  margin-bottom: 12px;
}

.legal-block h3 {
  margin: 24px 0 8px;
  font-size: 1.05rem;
}

.legal-dl dt {
  font-weight: 600;
  margin-top: 12px;
}

.legal-dl dd {
  margin: 4px 0 0;
}

.legal-block ul {
  margin: 8px 0 16px 1.2rem;
}

@media (min-width: 900px) {
  .module__summary,
  .section-grid {
    grid-template-columns: 190px 1fr;
  }

  .module__summary h2,
  .module__summary .module__meta {
    grid-column: 2;
  }

  .rail {
    grid-row: 1 / span 2;
  }

  .content-block {
    grid-column: 2;
  }
}

@media (max-width: 760px) {
  .spot-field {
    position: relative;
    inset: auto;
    width: 100%;
    margin-top: 28px;
  }

  .spot-grid {
    gap: 2px;
    padding: 10px;
  }
}

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

  ::details-content {
    transition: none;
  }

  .spot-grid {
    box-shadow: none;
  }
}