:root {
  color-scheme: light;
  --ink: #152421;
  --muted: #5b6864;
  --canvas: #f4f1e9;
  --paper: #fffdf7;
  --forest: #102e2a;
  --teal: #176d62;
  --teal-soft: #dcebe5;
  --coral: #ee765d;
  --coral-soft: #f9dfd7;
  --amber: #b47c24;
  --line: #d9d5ca;
  --shadow: 0 26px 70px rgb(21 36 33 / 10%);
  --radius: 1.25rem;
  --shell: min(1160px, calc(100vw - 3rem));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 1rem;
  border-radius: 0.5rem;
  background: var(--paper);
  color: var(--forest);
  transform: translateY(-180%);
}

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5.25rem;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: grid;
  width: 2.35rem;
  aspect-ratio: 1;
  place-items: center;
  border-radius: 0.7rem;
  background: var(--forest);
  color: var(--paper);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.91rem;
  font-weight: 650;
}

nav a:hover,
nav a:focus-visible {
  color: var(--ink);
}

.nav-source {
  padding: 0.52rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(360px, 0.94fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 7rem);
  min-height: calc(100vh - 5.25rem);
  padding-block: 4rem 7rem;
}

.eyebrow {
  margin: 0 0 1.2rem;
  color: var(--teal);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1,
h2 {
  margin: 0;
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", serif;
  font-weight: 530;
  line-height: 1.02;
  letter-spacing: -0.045em;
}

h1 {
  max-width: 13ch;
  font-size: clamp(3.4rem, 7vw, 6.8rem);
}

h2 {
  max-width: 17ch;
  font-size: clamp(2.35rem, 4.5vw, 4.25rem);
}

.lede {
  max-width: 58ch;
  margin: 1.75rem 0 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.28rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.72rem 1.1rem;
  border: 1px solid transparent;
  border-radius: 0.8rem;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 750;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--forest);
  color: var(--paper);
}

.button-primary:hover {
  background: #1a453e;
}

.button-secondary {
  border-color: var(--line);
  background: rgb(255 253 247 / 56%);
}

.button-secondary:hover {
  border-color: #aaa69c;
  background: var(--paper);
}

.safety-note {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.safety-note span {
  color: var(--coral);
}

.hero-visual {
  position: relative;
  min-height: 500px;
  padding: 2.4rem;
  overflow: hidden;
  border-radius: 2rem;
  background:
    radial-gradient(circle at 80% 15%, rgb(238 118 93 / 30%), transparent 32%),
    linear-gradient(145deg, #173d37, var(--forest));
  box-shadow: var(--shadow);
  color: var(--paper);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgb(255 255 255 / 4%) 1px, transparent 1px), linear-gradient(90deg, rgb(255 255 255 / 4%) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

.evidence-stack {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.85rem;
  padding-top: 1.25rem;
}

.evidence-card {
  display: grid;
  gap: 0.3rem;
  padding: 1.15rem 1.25rem;
  border: 1px solid rgb(255 255 255 / 16%);
  border-radius: 1rem;
  background: rgb(255 255 255 / 9%);
  backdrop-filter: blur(12px);
}

.evidence-card span,
.decision-output span {
  color: rgb(255 255 255 / 60%);
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.evidence-card strong {
  font-size: 1.08rem;
}

.card-ablated {
  margin-left: 1.5rem;
}

.card-contrast {
  margin-left: 3rem;
  border-color: rgb(238 118 93 / 50%);
}

.decision-output {
  position: absolute;
  z-index: 1;
  right: 2.4rem;
  bottom: 2.4rem;
  left: 2.4rem;
  display: grid;
  gap: 0.6rem;
  padding: 1.2rem 1.3rem;
  border-radius: 1rem;
  background: var(--paper);
  color: var(--ink);
}

.decision-output span {
  color: var(--teal);
}

.decision-output code {
  overflow-wrap: anywhere;
  font-size: clamp(0.85rem, 2vw, 1.05rem);
}

.section {
  padding-block: clamp(5.5rem, 11vw, 9rem);
}

.thesis {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 8vw, 8rem);
  align-items: end;
  border-top: 1px solid var(--line);
}

.section-intro > p:last-child,
.section-heading > p,
.method-grid > div > p,
.limit-copy > p {
  max-width: 58ch;
  color: var(--muted);
}

.section-intro > p:last-child {
  margin: 1.5rem 0 0;
}

.split-counts {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1.5rem;
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.split-counts article {
  display: grid;
  gap: 0.5rem;
}

.split-counts strong {
  font-family: ui-serif, Georgia, serif;
  font-size: clamp(3.5rem, 7vw, 5.5rem);
  font-weight: 520;
  line-height: 1;
}

.split-counts span {
  color: var(--muted);
  font-size: 0.84rem;
}

.split-rule {
  width: 1px;
  height: 7rem;
  background: var(--line);
}

.findings {
  border-top: 1px solid var(--line);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 3rem;
  margin-bottom: 3rem;
}

.section-heading > p {
  max-width: 34rem;
  margin: 0;
}

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

.metric-card {
  display: grid;
  min-height: 205px;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.metric-card > span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.metric-card strong {
  align-self: end;
  font-family: ui-serif, Georgia, serif;
  font-size: clamp(2.7rem, 5vw, 4.3rem);
  font-weight: 520;
  line-height: 1;
}

.metric-card small {
  align-self: end;
  color: var(--muted);
}

.metric-warning {
  border-color: #e7b8aa;
  background: var(--coral-soft);
}

.finding-note {
  max-width: 70ch;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.case-section {
  background: var(--forest);
  color: var(--paper);
}

.case-section .eyebrow {
  color: #8dd0c1;
}

.case-section .section-heading > p {
  color: rgb(255 255 255 / 62%);
}

.case-app {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  min-height: 720px;
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 13%);
  border-radius: 1.4rem;
  background: #173a35;
  box-shadow: 0 30px 80px rgb(0 0 0 / 20%);
}

.case-index {
  padding: 1.25rem;
  border-right: 1px solid rgb(255 255 255 / 11%);
  background: rgb(0 0 0 / 9%);
}

.case-index label {
  display: block;
  margin-bottom: 0.45rem;
  color: rgb(255 255 255 / 60%);
  font-size: 0.72rem;
  font-weight: 750;
  text-transform: uppercase;
}

.case-index input {
  width: 100%;
  padding: 0.75rem 0.8rem;
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: 0.7rem;
  outline: none;
  background: rgb(255 255 255 / 8%);
  color: var(--paper);
}

.case-index input::placeholder {
  color: rgb(255 255 255 / 36%);
}

.case-index input:focus {
  border-color: #8dd0c1;
}

.case-list {
  display: grid;
  gap: 0.35rem;
  max-height: 630px;
  margin-top: 1rem;
  overflow-y: auto;
  scrollbar-color: rgb(255 255 255 / 25%) transparent;
}

.case-list button {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0.6rem;
  align-items: center;
  width: 100%;
  padding: 0.7rem;
  border: 0;
  border-radius: 0.7rem;
  background: transparent;
  color: rgb(255 255 255 / 66%);
  text-align: left;
  cursor: pointer;
}

.case-list button:hover,
.case-list button[aria-current="true"] {
  background: rgb(255 255 255 / 10%);
  color: var(--paper);
}

.case-list button span:first-child {
  color: #8dd0c1;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.74rem;
}

.case-list button span:last-child {
  overflow: hidden;
  font-size: 0.8rem;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.case-detail {
  padding: clamp(1.25rem, 4vw, 2.5rem);
}

.case-toolbar {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 2rem;
}

.case-id {
  color: #8dd0c1;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.case-toolbar h3 {
  max-width: 30rem;
  margin: 0.25rem 0 0;
  font-family: ui-serif, Georgia, serif;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 520;
  line-height: 1.1;
}

.state-tabs {
  display: inline-flex;
  padding: 0.25rem;
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: 0.75rem;
  background: rgb(0 0 0 / 10%);
}

.state-tabs button {
  padding: 0.55rem 0.72rem;
  border: 0;
  border-radius: 0.55rem;
  background: transparent;
  color: rgb(255 255 255 / 58%);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
}

.state-tabs button[aria-selected="true"] {
  background: var(--paper);
  color: var(--forest);
}

.vignette-panel {
  margin-top: 2rem;
  padding: 1.4rem 1.5rem;
  border-left: 3px solid var(--coral);
  background: rgb(255 255 255 / 6%);
}

.panel-label {
  margin: 0 0 0.5rem;
  color: rgb(255 255 255 / 48%);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.vignette-panel p:last-child {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.13rem);
}

.decision-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.decision-card {
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid rgb(255 255 255 / 12%);
  border-radius: 1rem;
  background: rgb(255 255 255 / 6%);
}

.target-card {
  background: rgb(141 208 193 / 10%);
}

.decision-heading {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  color: rgb(255 255 255 / 55%);
  font-size: 0.7rem;
  font-weight: 760;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.status-pill {
  padding: 0.18rem 0.45rem;
  border-radius: 999px;
  background: rgb(255 255 255 / 10%);
  color: rgb(255 255 255 / 70%);
  letter-spacing: 0;
}

.status-pill.is-correct {
  background: rgb(141 208 193 / 18%);
  color: #b9ecdf;
}

.status-pill.is-wrong {
  background: rgb(238 118 93 / 18%);
  color: #ffc3b5;
}

.status-pill.is-partial {
  background: rgb(180 124 36 / 22%);
  color: #f5d59f;
}

.decision-card > strong {
  display: block;
  min-height: 3.6rem;
  margin-top: 1rem;
  overflow-wrap: anywhere;
  font-size: 1.18rem;
  line-height: 1.35;
}

.decision-card dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 1rem 0 0;
}

.decision-card dl div {
  padding-top: 0.7rem;
  border-top: 1px solid rgb(255 255 255 / 11%);
}

.decision-card dt {
  color: rgb(255 255 255 / 48%);
  font-size: 0.67rem;
  text-transform: uppercase;
}

.decision-card dd {
  margin: 0.15rem 0 0;
  font-size: 0.88rem;
  font-weight: 680;
  text-transform: capitalize;
}

.adjudication {
  margin-top: 1rem;
  padding: 1rem 1.2rem;
  border: 1px solid rgb(255 255 255 / 12%);
  border-radius: 0.9rem;
}

.adjudication summary {
  color: #8dd0c1;
  font-size: 0.78rem;
  font-weight: 740;
  cursor: pointer;
}

.adjudication p {
  margin: 0.8rem 0 0;
  color: rgb(255 255 255 / 68%);
  font-size: 0.88rem;
}

.results-section {
  border-bottom: 1px solid var(--line);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

th,
td {
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--line);
  text-align: right;
  white-space: nowrap;
}

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

th {
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

th:first-child,
td:first-child {
  text-align: left;
}

td:first-child {
  font-weight: 750;
}

td small {
  display: block;
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 500;
}

.method-section {
  background: var(--paper);
}

.method-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: center;
  gap: clamp(3rem, 9vw, 9rem);
}

.text-link {
  display: inline-flex;
  gap: 0.5rem;
  margin-top: 1rem;
  color: var(--teal);
  font-weight: 760;
  text-decoration: none;
}

.method-list {
  display: grid;
}

.method-list article {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1.25rem;
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--line);
}

.method-list article:first-child {
  border-top: 1px solid var(--line);
}

.method-list article > span {
  color: var(--coral);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
}

.method-list strong {
  font-size: 1.08rem;
}

.method-list p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.limits {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(3rem, 9vw, 9rem);
}

.limit-copy > p {
  margin-top: 0;
  font-size: 1.05rem;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}

.error-banner {
  position: fixed;
  z-index: 50;
  right: 1rem;
  bottom: 1rem;
  max-width: 28rem;
  padding: 1rem 1.2rem;
  border-radius: 0.8rem;
  background: #7a271a;
  color: white;
  box-shadow: var(--shadow);
}

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

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .hero-copy {
    padding-top: 3rem;
  }

  .hero-visual {
    min-height: 470px;
  }

  .thesis,
  .method-grid,
  .limits {
    grid-template-columns: 1fr;
  }

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

  .case-app {
    grid-template-columns: 220px minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  :root {
    --shell: calc(100% - 1.5rem);
  }

  html,
  body {
    overflow-x: hidden;
  }

  nav a:not(.nav-source) {
    display: none;
  }

  .brand > span:last-child {
    display: none;
  }

  .hero {
    padding-block: 2rem 4.5rem;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(2.75rem, 13vw, 4.2rem);
    overflow-wrap: anywhere;
  }

  .hero-copy {
    min-width: 0;
  }

  .lede {
    font-size: 1rem;
  }

  .hero-visual {
    min-height: 430px;
    padding: 1.2rem;
    border-radius: 1.25rem;
  }

  .card-ablated {
    margin-left: 0.75rem;
  }

  .card-contrast {
    margin-left: 1.5rem;
  }

  .decision-output {
    right: 1.2rem;
    bottom: 1.2rem;
    left: 1.2rem;
  }

  .section-heading {
    display: grid;
    gap: 1.25rem;
  }

  .split-counts {
    gap: 0.85rem;
    padding: 1.2rem;
  }

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

  .metric-card {
    min-height: 165px;
  }

  .case-app {
    display: block;
  }

  .case-index {
    border-right: 0;
    border-bottom: 1px solid rgb(255 255 255 / 11%);
  }

  .case-list {
    display: flex;
    max-height: none;
    overflow-x: auto;
  }

  .case-list button {
    flex: 0 0 8.5rem;
    grid-template-columns: 1fr;
  }

  .case-toolbar {
    display: grid;
  }

  .state-tabs {
    width: 100%;
  }

  .state-tabs button {
    flex: 1;
  }

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

  .site-footer {
    display: grid;
  }
}

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

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