* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
}
.case-study {
  width: min(1120px, calc(100% - 64px));
  margin: 0 auto;
  padding: 72px 0 100px;
}
.case-study h1,
.case-study h2 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.case-study h1 {
  max-width: 960px;
  margin: 14px 0 20px;
  font-size: clamp(38px, 4.8vw, 64px);
  line-height: 1.08;
}
.case-study h2 {
  margin: 0 0 20px;
  font-size: clamp(30px, 3.4vw, 44px);
  line-height: 1.15;
}
.case-study h3 {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.35;
}
.case-study p {
  margin: 0 0 18px;
}
.case-study a {
  color: var(--accent);
  text-underline-offset: 4px;
}
.case-study :focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
}
.case-study .eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.hero-summary {
  max-width: 680px;
  color: var(--muted);
  font-size: 21px;
}
.project-meta {
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr;
  gap: 36px;
  margin: 0;
}
.project-meta dt {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}
.project-meta dd {
  margin: 0;
  font-size: 16px;
}
.case-section {
  margin-top: 86px;
  padding-top: 54px;
  border-top: 1px solid var(--line);
}
.section-intro {
  max-width: 760px;
  font-size: 18px;
}
.comparison-grid,
.evidence-grid,
.notes-grid,
.dashboard-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: 32px;
  align-items: start;
}
.comparison-grid article > p {
  min-height: 3.3em;
  color: var(--muted);
  font-size: 16px;
}
.case-study .case-media {
  position: relative;
  margin: 0;
  min-width: 0;
}
.case-media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}
.case-study .hero-media {
  width: 50%;
  max-width: 450px;
  margin: 38px auto;
}
.board {
  padding: 12px;
  background: #f7f6fa;
  border-radius: 12px;
}
.image-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
}
.rationale {
  max-width: 760px;
  margin-top: 36px;
}
.case-study .subhead {
  margin-top: 34px;
  margin-bottom: 18px;
  font-size: 18px;
}
.task-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
  margin: 32px 0;
  padding: 0;
  list-style: none;
}
.task-list .step {
  display: block;
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 14px;
}
.task-list h3 {
  font-size: 18px;
}
.task-list p {
  font-size: 16px;
  color: var(--muted);
}
.research-detail {
  margin-top: 16px;
  border: 1px solid #dfdae9;
  border-radius: 12px;
}
.research-detail summary {
  padding: 19px 24px;
  border-radius: 12px;
  color: var(--ink);
  cursor: pointer;
  font-weight: 500;
}
.research-detail summary:hover {
  background: #f8f6fc;
}
.research-detail summary::marker {
  color: var(--accent);
}
.research-detail[open] summary {
  border-bottom: 1px solid #dfdae9;
  border-radius: 12px 12px 0 0;
}
.detail-content {
  padding: 26px;
}
.detail-content h3 {
  margin-top: 28px;
}
.detail-content > :first-child {
  margin-top: 0;
}
.script-list {
  padding-left: 24px;
}
.script-list li,
.report li {
  margin-bottom: 10px;
}
.notes-grid h3 {
  font-size: 18px;
}
.notes-grid .board {
  min-height: 230px;
  display: grid;
  align-items: center;
}
.finding-summary {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 56px;
  align-items: center;
  margin: 32px 0;
}
.preference {
  padding: 28px;
  border-radius: 16px;
  background: linear-gradient(130deg, #f1ecfa, #e6dff5);
}
.preference .preference-number {
  margin: 0;
  color: #493481;
  font-family: var(--font-display);
  font-size: 76px;
  line-height: 1.15;
}
.preference-number span {
  font-size: 34px;
}
.preference > p:not(.preference-number) {
  font-size: 15px;
}
.preference-bar {
  overflow: hidden;
  height: 10px;
  margin: 24px 0 12px;
  background: #c6b4e2;
  border-radius: 10px;
}
.preference-bar span {
  display: block;
  width: 80%;
  height: 100%;
  background: var(--accent);
}
.case-study .caption,
.case-media figcaption {
  color: var(--muted);
  font-size: 14px;
}
.preference .caption {
  margin-bottom: 0;
}
.report h4 {
  margin: 34px 0 14px;
  font-size: 19px;
  font-weight: 500;
}
.report h5 {
  margin: 24px 0 12px;
  font-size: 16px;
}
.report p,
.report li {
  font-size: 16px;
}
.case-study .source-note {
  margin: 18px 0;
  padding: 16px 20px;
  border-left: 3px solid #b3a0d8;
  background: #f7f5fb;
  color: #514666;
  font-size: 14px;
}
.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  margin: 24px 0;
}
.report table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.5;
}
.report caption {
  padding-bottom: 12px;
  text-align: left;
  font-size: 17px;
  font-weight: 500;
}
.report th,
.report td {
  padding: 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.report thead th {
  background: #eee8f7;
  color: #493481;
  font-weight: 700;
}
.report tbody th {
  width: 21%;
  font-weight: 500;
}
.report td:nth-child(3) {
  min-width: 100px;
}
.report td:nth-child(4) {
  width: 28%;
}
.outcome-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: center;
  margin: 36px 0 48px;
}
.dashboard-comparison {
  margin-top: 0;
}
.dashboard-comparison > figure {
  margin: 0;
  min-width: 0;
}
.dashboard-comparison figcaption {
  padding-top: 12px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}
.dashboard-comparison .case-media {
  display: grid;
  place-items: center;
  aspect-ratio: 1540 / 1038;
}
.case-media figcaption {
  padding-top: 12px;
}
@media (max-width: 720px) {
  .case-study {
    width: calc(100% - 40px);
    padding-top: 40px;
    padding-bottom: 64px;
  }
  .hero-summary {
    font-size: 18px;
  }
  .case-study .hero-media {
    margin: 28px auto;
  }
  .project-meta {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .project-meta dt {
    margin-bottom: 3px;
  }
  .case-section {
    margin-top: 54px;
    padding-top: 36px;
  }
  .comparison-grid,
  .evidence-grid,
  .notes-grid,
  .dashboard-comparison,
  .finding-summary,
  .outcome-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .comparison-grid article > p {
    min-height: 0;
  }
  .task-list {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .task-list li {
    display: grid;
    grid-template-columns: 28px 1fr;
    gap: 12px;
  }
  .task-list p {
    margin-bottom: 0;
  }
  .research-detail summary {
    padding: 18px;
    font-size: 16px;
  }
  .detail-content {
    padding: 18px;
  }
  .notes-grid .board {
    min-height: 0;
  }
  .dashboard-comparison .case-media {
    aspect-ratio: auto;
  }
  .finding-summary {
    gap: 24px;
  }
  .case-study .source-note {
    padding: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}