:root {
  color-scheme: light;
  --paper: #f4f1ea;
  --paper-deep: #e9e4da;
  --surface: #fffdf8;
  --ink: #111416;
  --ink-2: #34383d;
  --muted: #686d72;
  --line: #cfc9bd;
  --line-dark: #a9a297;
  --accent: #0057b8;
  --accent-dark: #003f87;
  --accent-soft: #e6f0fc;
  --green: #236b43;
  --amber: #8a5700;
  --red: #a2352a;
  --shell: 1180px;
  --article: 760px;
  --mono: "SFMono-Regular", ui-monospace, "Cascadia Code", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

[hidden] { display: none !important; }
a { color: inherit; }
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(0, 87, 184, 0.35);
  outline-offset: 3px;
}

.shell {
  width: min(calc(100% - 48px), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: -80px;
  left: 16px;
  padding: 10px 14px;
  background: var(--ink);
  color: white;
  text-decoration: none;
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(14px);
}
.header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  line-height: 1.05;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: -0.06em;
}
.brand > span:last-child { display: grid; }
.brand strong { font-size: 13px; letter-spacing: -0.01em; }
.brand small {
  margin-top: 4px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.header-nav { display: flex; align-items: center; gap: 22px; }
.header-nav a {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
}
.header-nav a:hover { color: var(--accent); }
.repo-link span { color: var(--accent); }

.hero {
  min-height: 610px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  gap: clamp(56px, 9vw, 120px);
  align-items: end;
  padding-block: 108px 84px;
  border-bottom: 1px solid var(--line-dark);
}
.hero-main { max-width: 790px; }
.eyebrow,
.section-kicker,
.issue-number,
.domain,
.state,
.result-count,
.breadcrumb,
.toc > p {
  font-family: var(--mono);
}
.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--accent-dark);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(48px, 7vw, 80px);
  line-height: 0.98;
  letter-spacing: -0.06em;
  font-weight: 720;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-copy {
  max-width: 700px;
  margin: 28px 0 0;
  color: var(--ink-2);
  font-size: clamp(18px, 2vw, 21px);
}
.hero-actions,
.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}
.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 120ms ease, color 120ms ease, transform 120ms ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--ink); color: white; }
.button-primary:hover { background: var(--accent-dark); }
.button-secondary:hover { background: var(--surface); }

.hero-aside {
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.hero-aside > div {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 3px 12px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.hero-aside > div:last-child { border-bottom: 0; }
.hero-aside span {
  grid-row: 1 / span 2;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
}
.hero-aside strong { font-size: 14px; }
.hero-aside small { color: var(--muted); line-height: 1.45; }

.investigations { padding-block: 92px 110px; }
.section-topline {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}
.section-topline h2,
.method-grid h2 {
  margin: 0;
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.045em;
}
.result-count {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.result-count strong { color: var(--ink); }

.search-panel {
  padding: 22px 0 26px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}
.search-panel > label {
  display: block;
  margin-bottom: 9px;
  color: var(--ink-2);
  font-size: 12px;
  font-weight: 700;
}
.search-row { display: grid; grid-template-columns: 1fr auto; }
.search-row input,
.search-row button {
  min-height: 50px;
  border: 1px solid var(--ink);
  border-radius: 0;
  font: inherit;
}
.search-row input {
  min-width: 0;
  padding: 11px 14px;
  background: var(--surface);
  color: var(--ink);
}
.search-row button {
  margin-left: -1px;
  padding: 0 20px;
  background: var(--ink);
  color: white;
  font-size: 13px;
  font-weight: 750;
  cursor: pointer;
}
.search-row button:hover { background: var(--accent-dark); }
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 14px;
}
.filter-chip {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border: 1px solid var(--line-dark);
  background: transparent;
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 10px;
  text-decoration: none;
}
.filter-chip:hover,
.filter-chip[aria-current="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.issue-list { border-bottom: 1px solid var(--line-dark); }
.issue-card { border-top: 1px solid var(--line-dark); }
.issue-card:first-child { border-top: 0; }
.issue-card-link {
  position: relative;
  display: grid;
  grid-template-columns: 185px minmax(0, 1fr) 36px;
  gap: 28px;
  align-items: center;
  min-height: 168px;
  padding: 28px 4px;
  text-decoration: none;
}
.issue-card-link:hover h3 { color: var(--accent); }
.issue-card-link:hover .card-arrow { transform: translateX(4px); color: var(--accent); }
.issue-card-meta {
  align-self: stretch;
  display: grid;
  align-content: start;
  gap: 8px;
  padding-top: 3px;
}
.issue-number,
.domain,
.state {
  width: fit-content;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.issue-number { color: var(--muted); }
.domain { color: var(--accent-dark); }
.state { padding: 2px 6px; border: 1px solid currentColor; }
.state-open { color: var(--green); }
.state-closed { color: var(--red); }
.issue-card h3 {
  grid-column: 2;
  margin: 0;
  max-width: 820px;
  font-size: clamp(22px, 2.4vw, 31px);
  line-height: 1.14;
  letter-spacing: -0.032em;
  transition: color 120ms ease;
}
.label-row {
  grid-column: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: -12px;
}
.label,
.article-labels .label {
  display: inline-flex;
  align-items: center;
  min-height: 25px;
  padding: 2px 7px;
  border: 1px solid var(--line-dark);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.02em;
}
.label-evidence { border-color: #88ad96; color: var(--green); }
.label-area { border-color: #8daed1; color: var(--accent-dark); }
.card-arrow {
  grid-column: 3;
  grid-row: 1 / span 2;
  justify-self: end;
  font-size: 28px;
  transition: transform 120ms ease, color 120ms ease;
}
.empty-state {
  padding: 54px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.empty-state strong { color: var(--ink); }
.empty-state p { margin-bottom: 0; }

.method-section {
  border-top: 1px solid var(--ink);
  background: var(--ink);
  color: white;
}
.method-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: clamp(50px, 10vw, 130px);
  align-items: end;
  padding-block: 82px;
}
.method-grid .section-kicker { color: #83b8f2; }
.method-grid p:last-child { margin: 0; color: #c5c9cd; }

.article-shell { padding-bottom: 90px; }
.article-header {
  max-width: 980px;
  padding-block: 68px 58px;
  border-bottom: 1px solid var(--line-dark);
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 42px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.article-meta-line { display: flex; gap: 12px; align-items: center; margin-bottom: 18px; }
.article-header h1 {
  max-width: 930px;
  margin: 0;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.01;
  letter-spacing: -0.055em;
}
.article-labels { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 24px; }
.source-note {
  max-width: 760px;
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--accent);
  color: var(--muted);
  font-size: 13px;
}
.source-note strong { color: var(--ink); }

.article-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, var(--article));
  gap: clamp(48px, 8vw, 100px);
  align-items: start;
  padding-top: 54px;
}
.toc-column { min-width: 0; }
.toc {
  position: sticky;
  top: 100px;
  padding-top: 12px;
  border-top: 1px solid var(--ink);
}
.toc > p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.toc ol { margin: 0; padding: 0; list-style: none; }
.toc li { margin: 0; }
.toc a {
  display: block;
  min-height: 30px;
  padding: 5px 0;
  color: var(--ink-2);
  font-size: 12px;
  line-height: 1.45;
  text-decoration: none;
}
.toc a:hover { color: var(--accent); }
.toc-level-3 a { padding-left: 14px; color: var(--muted); font-size: 11px; }

.prose { min-width: 0; color: var(--ink-2); }
.prose > :first-child { margin-top: 0; }
.prose h1,
.prose h2,
.prose h3,
.prose h4 {
  position: relative;
  color: var(--ink);
  line-height: 1.2;
  letter-spacing: -0.025em;
  scroll-margin-top: 96px;
}
.prose h2 {
  margin: 64px 0 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
  font-size: 30px;
}
.prose h3 { margin: 38px 0 12px; font-size: 22px; }
.prose h4 { margin: 30px 0 10px; font-size: 18px; }
.section-anchor {
  margin-left: 9px;
  color: var(--line-dark);
  font-family: var(--mono);
  font-size: .62em;
  text-decoration: none;
  opacity: 0;
}
.prose h2:hover .section-anchor,
.prose h3:hover .section-anchor,
.section-anchor:focus-visible { opacity: 1; color: var(--accent); }
.prose p { margin: 0 0 20px; }
.prose a { color: var(--accent-dark); text-underline-offset: 3px; }
.prose a:hover { color: var(--accent); }
.prose ul,
.prose ol { padding-left: 24px; margin-block: 0 22px; }
.prose li { margin-block: 6px; }
.prose blockquote {
  margin: 30px 0;
  padding: 4px 0 4px 18px;
  border-left: 3px solid var(--accent);
  color: var(--ink);
  font-size: 18px;
}
.prose pre {
  overflow-x: auto;
  margin: 26px 0;
  padding: 18px 20px;
  border: 1px solid var(--line-dark);
  background: #ebe7de;
  color: #202427;
  font: 12px/1.6 var(--mono);
  tab-size: 2;
}
.prose code {
  padding: .12em .32em;
  background: #e8e3d9;
  color: #24282c;
  font-family: var(--mono);
  font-size: .86em;
}
.prose pre code { padding: 0; background: transparent; font-size: inherit; }
.prose table {
  width: 100%;
  display: block;
  overflow-x: auto;
  margin: 26px 0;
  border-collapse: collapse;
  font-size: 13px;
}
.prose th,
.prose td { padding: 9px 12px; border: 1px solid var(--line); text-align: left; }
.prose th { background: var(--paper-deep); color: var(--ink); }
.prose img { max-width: 100%; height: auto; }
.prose hr { margin: 52px 0; border: 0; border-top: 1px solid var(--line-dark); }

.article-source-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 72px;
  padding-top: 20px;
  border-top: 1px solid var(--ink);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
}
.article-source-footer a { color: var(--accent-dark); text-decoration: none; }

.site-footer { border-top: 1px solid var(--line-dark); }
.footer-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
  font-size: 12px;
}
.footer-inner a { color: var(--ink-2); text-decoration: none; }
.footer-inner a:hover { color: var(--accent); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-block: 80px 64px; }
  .hero-aside { max-width: 560px; }
  .article-layout { grid-template-columns: 1fr; gap: 34px; }
  .toc { position: static; }
  .toc ol { columns: 2; column-gap: 28px; }
  .toc li { break-inside: avoid; }
}

@media (max-width: 680px) {
  .shell { width: min(calc(100% - 30px), var(--shell)); }
  .header-inner { min-height: 60px; }
  .header-nav a:not(.repo-link) { display: none; }
  .repo-link { font-size: 12px !important; }
  .hero { padding-block: 60px 50px; gap: 44px; }
  .hero h1 { font-size: clamp(43px, 13vw, 62px); }
  .hero-copy { font-size: 17px; }
  .investigations { padding-block: 64px 78px; }
  .section-topline { align-items: start; flex-direction: column; gap: 12px; }
  .search-row { grid-template-columns: 1fr; gap: 8px; }
  .search-row button { margin-left: 0; min-height: 46px; }
  .issue-card-link {
    grid-template-columns: 1fr 28px;
    gap: 18px;
    min-height: 0;
    padding: 26px 0;
  }
  .issue-card-meta { grid-column: 1; grid-row: auto; display: flex; align-self: auto; flex-wrap: wrap; gap: 8px 12px; }
  .issue-card h3 { grid-column: 1; font-size: 23px; }
  .label-row { grid-column: 1; margin-top: -4px; }
  .card-arrow { grid-column: 2; grid-row: 1 / span 3; align-self: center; }
  .method-grid { grid-template-columns: 1fr; gap: 28px; padding-block: 64px; }
  .article-header { padding-block: 46px 42px; }
  .breadcrumb { margin-bottom: 30px; }
  .article-header h1 { font-size: clamp(40px, 12vw, 58px); }
  .article-layout { padding-top: 36px; }
  .toc ol { columns: 1; }
  .prose h2 { margin-top: 50px; font-size: 27px; }
  .article-source-footer { flex-direction: column; }
  .footer-inner { align-items: flex-start; flex-direction: column; justify-content: center; gap: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}