:root {
  color-scheme: dark;
  --ink: #060907;
  --surface: #0c110d;
  --surface-soft: #111711;
  --paper: #f7f6ef;
  --muted: rgba(247, 246, 239, .64);
  --quiet: rgba(247, 246, 239, .44);
  --line: rgba(247, 246, 239, .14);
  --signal: #caff32;
  --warm: #d0a75e;
  --shell: min(1180px, calc(100% - 56px));
  --ease: cubic-bezier(.2, .8, .2, 1);
}
[data-only-case][hidden] { display: none !important; }

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--ink);
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 86% 4%, rgba(208, 167, 94, .13), transparent 24%),
    radial-gradient(circle at 10% 32%, rgba(202, 255, 50, .045), transparent 22%),
    var(--ink);
  color: var(--paper);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 12px 16px;
  border: 1px solid var(--signal);
  border-radius: 999px;
  background: var(--ink);
  color: var(--signal);
  text-decoration: none;
  transform: translateY(-180%);
}

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

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 4px;
}

.case-header {
  position: relative;
  z-index: 5;
  display: flex;
  width: var(--shell);
  min-height: 92px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 auto;
  border-bottom: 1px solid var(--line);
}

.case-brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 10px;
  color: var(--paper);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .04em;
  text-decoration: none;
}

.case-brand-mark {
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  border-radius: 50%;
  background: var(--signal);
  color: #070a08;
  font-size: 12px;
  font-weight: 950;
}

.case-header nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.case-header nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
  text-decoration: none;
}

.case-header nav a:hover,
.case-header nav a:focus-visible {
  color: var(--signal);
}

main {
  display: block;
}

/* Respect the renderer error state even with an author display rule. */
main[hidden] {
  display: none;
}

.case-hero {
  display: grid;
  width: var(--shell);
  min-height: 690px;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  gap: clamp(44px, 7vw, 104px);
  align-items: center;
  margin: 0 auto;
  padding: clamp(76px, 10vw, 142px) 0 clamp(82px, 10vw, 136px);
}

.case-eyebrow,
.case-kicker {
  margin: 0 0 20px;
  color: var(--signal);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.case-hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(50px, 6.6vw, 94px);
  line-height: .98;
  letter-spacing: -.065em;
  text-wrap: balance;
}

.case-lead {
  max-width: 650px;
  margin: 30px 0 0;
  color: rgba(247, 246, 239, .78);
  font-size: clamp(17px, 1.7vw, 22px);
  line-height: 1.55;
}

.case-status-grid {
  display: grid;
  max-width: 660px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--line);
}

.case-status-grid > div {
  display: grid;
  gap: 9px;
  padding: 20px;
  background: rgba(10, 15, 11, .96);
}

.case-status-grid span {
  color: var(--quiet);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.case-status-grid strong {
  font-size: 12px;
  line-height: 1.55;
}

.case-visual {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: 0 34px 100px rgba(0, 0, 0, .34);
}

.case-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  filter: saturate(.9) brightness(.82) contrast(1.04);
}

.case-visual figcaption {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(5, 8, 6, .86);
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
  backdrop-filter: blur(10px);
}

.case-section {
  display: grid;
  width: var(--shell);
  grid-template-columns: minmax(80px, .22fr) minmax(0, 1fr);
  gap: clamp(24px, 6vw, 94px);
  margin: 0 auto;
  padding: clamp(72px, 9vw, 126px) 0;
  border-top: 1px solid var(--line);
}

.section-number {
  color: var(--quiet);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .14em;
}

.case-section h2 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(34px, 5vw, 68px);
  line-height: 1.02;
  letter-spacing: -.055em;
  text-wrap: balance;
}

.section-lead {
  max-width: 850px;
  margin: 34px 0 0;
  color: rgba(247, 246, 239, .84);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.55;
}

.case-section p:not(.case-kicker):not(.section-lead) {
  max-width: 850px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.decision-list,
.outcome-list,
.flow-list {
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
}

.decision-list li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 20px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.decision-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.decision-list span,
.flow-list span {
  color: var(--signal);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .12em;
}

.decision-list p {
  margin: 0 !important;
  color: rgba(247, 246, 239, .82) !important;
  font-size: 16px !important;
  line-height: 1.7 !important;
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

.flow-list li {
  position: relative;
  display: flex;
  min-height: 150px;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 16px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, .025);
}

.flow-list li:last-child {
  border-right: 0;
}

.flow-list strong {
  font-size: 12px;
  line-height: 1.5;
}

.outcome-list {
  display: grid;
  gap: 12px;
}

.outcome-list li {
  position: relative;
  max-width: 860px;
  padding: 22px 24px 22px 56px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, .025);
  color: rgba(247, 246, 239, .8);
  line-height: 1.7;
}

.outcome-list li::before {
  position: absolute;
  top: 22px;
  left: 22px;
  color: var(--signal);
  content: "✓";
  font-weight: 900;
}

.limitation-card {
  max-width: 860px;
  margin-top: 28px;
  padding: 26px 28px;
  border-left: 3px solid var(--warm);
  background: rgba(208, 167, 94, .08);
  color: rgba(247, 246, 239, .72);
  font-size: 14px;
  line-height: 1.8;
}

.case-reflection blockquote {
  max-width: 900px;
  margin: 42px 0 0;
  padding: 0;
  border: 0;
  color: var(--paper);
  font-size: clamp(24px, 3vw, 40px);
  font-weight: 750;
  line-height: 1.38;
  letter-spacing: -.035em;
}

.case-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 44px;
}

.case-actions a,
.case-error a {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  padding: 0 20px;
  border: 1px solid rgba(202, 255, 50, .45);
  border-radius: 999px;
  color: var(--paper);
  font-size: 12px;
  font-weight: 850;
  text-decoration: none;
}

.case-actions a:hover,
.case-actions a:focus-visible,
.case-error a:hover,
.case-error a:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
}

.case-footer {
  display: flex;
  width: var(--shell);
  min-height: 92px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
  color: var(--quiet);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .08em;
}

.case-error {
  width: var(--shell);
  min-height: 70vh;
  margin: 0 auto;
  padding: 120px 0;
}

.case-error[hidden] {
  display: none;
}

.case-error h1 {
  margin: 0;
  font-size: clamp(44px, 7vw, 88px);
  line-height: 1;
}

.case-error p {
  margin: 24px 0;
  color: var(--muted);
}

.methodology-hero,
.methodology-section {
  width: var(--shell);
  margin: 0 auto;
}

.methodology-hero {
  padding: clamp(92px, 12vw, 168px) 0 clamp(84px, 10vw, 140px);
}

.methodology-hero h1 {
  max-width: 1060px;
  margin: 0;
  font-size: clamp(52px, 7.5vw, 106px);
  line-height: .98;
  letter-spacing: -.065em;
  text-wrap: balance;
}

.methodology-hero > p:not(.case-eyebrow) {
  max-width: 760px;
  margin: 34px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 1.9vw, 23px);
}

.methodology-axis {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-top: 54px;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.methodology-axis span {
  display: grid;
  min-height: 86px;
  place-items: center;
  padding: 12px;
  border-right: 1px solid var(--line);
  color: rgba(247, 246, 239, .78);
  font-size: 11px;
  font-weight: 800;
  text-align: center;
}

.methodology-axis span:last-child {
  border-right: 0;
  color: var(--signal);
}

.methodology-section {
  padding: clamp(76px, 9vw, 128px) 0;
  border-top: 1px solid var(--line);
}

.methodology-section > header {
  display: grid;
  grid-template-columns: minmax(190px, .34fr) minmax(0, 1fr);
  column-gap: clamp(32px, 6vw, 88px);
}

.methodology-section > header .case-kicker {
  grid-row: 1 / span 3;
}

.methodology-section h2 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(38px, 5vw, 70px);
  line-height: 1.02;
  letter-spacing: -.055em;
  text-wrap: balance;
}

.methodology-section > header > p:last-child {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--muted);
}

.methodology-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 54px 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
}

.methodology-grid li,
.evidence-ladder article {
  min-height: 240px;
  padding: 26px;
  background: rgba(10, 15, 11, .97);
}

.methodology-grid span,
.evidence-ladder span,
.gate-list > li > span {
  color: var(--signal);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .12em;
}

.methodology-grid h3,
.evidence-ladder h3,
.gate-list h3 {
  margin: 54px 0 0;
  font-size: 19px;
  line-height: 1.25;
}

.methodology-grid p,
.evidence-ladder p,
.gate-list p {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.72;
}

.evidence-ladder {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 54px;
}

.evidence-ladder article {
  border: 1px solid var(--line);
  border-radius: 12px;
}

.gate-list {
  margin: 54px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.gate-list li {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 30px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.gate-list h3,
.gate-list p {
  margin-top: 0;
}

@media (max-width: 920px) {
  :root {
    --shell: min(100% - 36px, 760px);
  }

  .case-hero {
    min-height: 0;
    grid-template-columns: 1fr;
    padding-top: 72px;
  }

  .case-visual {
    width: min(100%, 620px);
  }

  .case-visual img {
    aspect-ratio: 8 / 5;
  }

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

  .flow-list li {
    min-height: 120px;
    border-bottom: 1px solid var(--line);
  }

  .methodology-section > header {
    grid-template-columns: 1fr;
  }

  .methodology-section > header .case-kicker {
    grid-row: auto;
  }

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

@media (max-width: 640px) {
  :root {
    --shell: calc(100% - 28px);
  }

  .case-header {
    min-height: 82px;
  }

  .case-header nav {
    gap: 4px;
  }

  .case-header nav a {
    min-width: 44px;
    justify-content: center;
    padding: 0 7px;
    font-size: 10px;
  }

  .case-header nav a:nth-child(2) {
    display: none;
  }

  .case-hero {
    gap: 38px;
    padding: 64px 0 76px;
  }

  .case-hero h1 {
    font-size: clamp(44px, 14vw, 62px);
  }

  .case-status-grid {
    grid-template-columns: 1fr;
  }

  .case-section {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 72px 0;
  }

  .section-number {
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
  }

  .decision-list li {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .flow-list {
    grid-template-columns: 1fr;
  }

  .flow-list li {
    min-height: 92px;
    border-right: 0;
  }

  .case-footer {
    min-height: 112px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
  }

  .methodology-axis,
  .methodology-grid,
  .evidence-ladder {
    grid-template-columns: 1fr;
  }

  .methodology-axis span {
    min-height: 60px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .methodology-axis span:last-child {
    border-bottom: 0;
  }

  .methodology-grid li,
  .evidence-ladder article {
    min-height: 210px;
  }

  .gate-list li {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 18px;
  }
}

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

/* V26: readable case summaries before detailed evidence and process. */
.case-header nav a { font-size: 14px; }
.case-hero {
  min-height: 0;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, .85fr);
  gap: 40px;
  padding: 44px 0 32px;
}
.case-hero h1 {
  font-size: clamp(32px, 4.2vw, 54px);
  line-height: 1.18;
  letter-spacing: -.035em;
  text-wrap: initial;
}
.title-line { display: block; }
.case-lead { margin-top: 18px; font-size: 17px; line-height: 1.65; }
.case-eyebrow, .case-kicker { font-size: 12px; line-height: 1.5; }
.case-at-a-glance { display: grid; gap: 12px; margin-top: 24px; }
.case-at-a-glance > div {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.case-at-a-glance span { color: var(--signal); font-size: 13px; font-weight: 800; }
.case-at-a-glance p { margin: 0; color: rgba(247,246,239,.82); font-size: 15px; line-height: 1.7; }
.case-visual img { aspect-ratio: 3 / 2; }
.case-visual figcaption { max-width: calc(100% - 24px); font-size: 11px; }
.case-outline {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  width: var(--shell);
  margin: 0 auto;
  padding: 12px 0 24px;
}
.case-outline a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
}
.case-outline a:hover { border-color: var(--signal); color: var(--signal); }
.case-section { grid-template-columns: 50px minmax(0,1fr); gap: 28px; padding: 56px 0; scroll-margin-top: 24px; }
.case-section h2 { font-size: clamp(29px,3.5vw,46px); line-height: 1.2; letter-spacing: -.035em; }
.section-lead { margin-top: 24px; font-size: 19px; line-height: 1.7; }
.case-status-grid { max-width: 900px; margin-top: 26px; }
.case-status-grid span { color: var(--muted); font-size: 12px; }
.case-status-grid strong { font-size: 15px; line-height: 1.7; font-weight: 600; }
.outcome-list, .decision-list, .flow-list { margin-top: 28px; }
.limitation-card { font-size: 15px; }
.flow-list { grid-template-columns: repeat(auto-fit,minmax(120px,1fr)); }
.flow-list strong { font-size: 15px; line-height: 1.65; }
.flow-list span, .decision-list span { font-size: 12px; }
.case-example { margin-top: 36px; padding: 28px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); scroll-margin-top: 24px; }
.case-example[hidden] { display: none; }
.case-example h3 { margin: 0; font-size: 24px; line-height: 1.45; }
.case-example .flow-list { grid-template-columns: repeat(2,minmax(0,1fr)); }
.case-example .flow-list li { min-height: 120px; gap: 12px; border-bottom: 1px solid var(--line); }
.case-example .flow-list li:nth-child(even) { border-right: 0; }
.case-example .flow-list li:nth-last-child(-n+2) { border-bottom: 0; }
.case-actions a { font-size: 14px; }
.case-footer { font-size: 12px; }
.methodology-hero { padding: 64px 0; }
.methodology-hero h1 { font-size: clamp(36px,5.2vw,70px); line-height: 1.12; }
.methodology-section { padding: 64px 0; }
.methodology-section h2 { font-size: clamp(30px,3.8vw,50px); line-height: 1.18; }
.methodology-grid p, .gate-list p { font-size: 15px; line-height: 1.75; }
.methodology-axis span { font-size: 14px; }
.evidence-axes { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; margin-top: 32px; }
.evidence-axes article { padding: 24px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.evidence-axes h3 { margin: 0; color: var(--signal); font-size: 20px; }
.evidence-axes ul { margin: 20px 0 0; padding-left: 20px; }
.evidence-axes li { margin-top: 14px; color: var(--muted); font-size: 15px; line-height: 1.75; }
.evidence-axes strong { color: var(--paper); }
@media (max-width: 920px) {
  .case-hero { grid-template-columns: minmax(0,1fr); gap: 24px; padding-top: 32px; }
  .case-visual { width: 100%; }
  .case-visual img { max-height: 280px; aspect-ratio: 2 / 1; }
}
@media (max-width: 640px) {
  .case-header { flex-wrap: wrap; gap: 0 12px; padding-block: 10px; }
  .case-header nav { flex-wrap: wrap; gap: 4px; }
  .case-header nav a { font-size: 13px; }
  .case-header nav a:nth-child(2) { display: inline-flex; }
  .case-hero h1 { font-size: clamp(28px,7.8vw,44px); }
  .case-at-a-glance > div { grid-template-columns: minmax(0,1fr); gap: 5px; }
  .case-section { grid-template-columns: minmax(0,1fr); gap: 18px; padding: 40px 0; }
  .case-outline { gap: 8px; }
  .case-outline a { padding-inline: 12px; }
  .case-example { padding: 20px; }
  .case-example .flow-list, .flow-list { grid-template-columns: minmax(0,1fr); }
  .case-example .flow-list li { border-right: 0; }
  .case-example .flow-list li:nth-last-child(2) { border-bottom: 1px solid var(--line); }
  .evidence-axes { grid-template-columns: minmax(0,1fr); }
}