body {
  margin: 0;
  background: var(--color-background);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.18rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.case-study {
  display: flex;
  flex-direction: column;
  gap: 48px;
  max-width: 1128px;
  margin: 0 auto;
  padding: 112px 64px 140px;
}
.hero,
.case-section {
  display: flex;
  flex-direction: column;
  gap: 30px;
}
.eyebrow {
  margin: 0;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 850px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.02;
}
.hero-summary {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 1.4rem;
  line-height: 1.5;
}
.project-meta {
  display: grid;
  grid-template-columns: 1fr 1fr 2fr;
  gap: 30px;
  padding: 8px 0;
}
.project-meta p,
.nutshell-grid p,
.case-section p {
  margin: 0;
}
.project-meta strong,
.nutshell-grid strong {
  font-family: var(--font-display);
  font-size: 0.92rem;
}
.case-section {
  padding-top: 64px;
  margin-top: 8px;
  border-top: 1px solid var(--line);
}
.intro-block {
  padding-top: 30px;
  border-top: 0;
}
.case-section h2 {
  margin: 0;
  color: #252334;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4vw, 3.75rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.12;
}
.case-section h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.45rem;
  line-height: 1.3;
}
.lead {
  font-size: 1.4rem;
  line-height: 1.65;
}
.section-heading {
  display: flex;
  align-items: baseline;
  gap: 18px;
}
.section-heading > span {
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 700;
}
.nutshell-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--line);
}
.nutshell-grid p {
  padding: 28px;
  background: var(--panel);
}
.process-flow {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow-x: auto;
  padding: 32px 20px;
  border-radius: 16px;
  background: #f4f2f7;
}
.process-flow span {
  min-width: 116px;
  padding: 16px;
  border: 1px solid #d7d2df;
  border-radius: 10px;
  background: white;
  font-size: 0.88rem;
  line-height: 1.25;
  text-align: center;
}
.process-flow b {
  color: var(--accent);
}
.caption {
  color: var(--muted);
  font-size: 0.95rem;
}
.challenge-summary {
  display: grid;
  grid-template-columns: 0.75fr 1fr 1fr;
  gap: 28px;
  padding: 32px;
  border-radius: 18px;
  background: #292638;
  color: white;
}
.challenge-summary article p {
  margin-top: 8px;
  color: #e3dfeb;
  font-size: 1rem;
}
.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
}
.three-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.brief-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}
.brief-grid > div:first-child {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  align-self: flex-start;
  gap: 20px;
  width: 100%;
  max-width: 680px;
  min-width: 0;
  text-align: left;
}
.brief-grid .brief-image {
  display: block;
  width: 100%;
  max-width: 800px;
  height: auto;
}
.brief-grid .case-study-lightbox-host {
  width: 100%;
  max-width: 800px;
  min-width: 0;
}
.brief-grid .scope-note {
  max-width: 100%;
}
.pull-quote {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 600;
  line-height: 1.3;
}
.scope-note {
  width: max-content;
  padding: 7px 13px;
  border-radius: 999px;
  background: #eeeaf3;
  font-size: 0.9rem;
}
.media-placeholder {
  display: flex;
  min-height: 280px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 32px;
  border: 1.5px dashed #aaa3b5;
  border-radius: 18px;
  background: linear-gradient(145deg, #f5f3f7, #ebe8ef);
  color: #5e5867;
  text-align: center;
}
.media-placeholder span {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
}
.media-placeholder small {
  max-width: 520px;
}
.media-placeholder.compact {
  min-height: 180px;
}
.persona-grid,
.finding-grid,
.scope-grid,
.learning-grid {
  display: grid;
  gap: 18px;
}
.persona-grid {
  grid-template-columns: repeat(4, 1fr);
}
.persona-grid article,
.finding-grid article,
.challenge-cards article,
.learning-grid p {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
}
.persona-grid p,
.finding-grid li {
  font-size: 1rem;
}
.finding-grid {
  grid-template-columns: repeat(3, 1fr);
}
.finding-grid ul {
  margin: 14px 0 0;
  padding-left: 20px;
}
.subhead {
  padding-top: 18px;
}
.challenge-cards article > span {
  color: var(--accent);
  font-size: 2.5rem;
  font-weight: 700;
}
.challenge-cards article h3 {
  margin: 8px 0 14px;
}
.scope-grid {
  grid-template-columns: repeat(4, 1fr);
}
.scope-grid span {
  display: flex;
  min-height: 145px;
  align-items: center;
  padding: 22px;
  border-radius: 14px;
  background: #292638;
  color: white;
  font-family: var(--font-display);
  font-weight: 600;
}
.question {
  padding: 32px;
  border-left: 5px solid var(--accent);
  background: #f5f2f8;
  font-family: var(--font-display);
  font-size: 1.65rem;
  line-height: 1.45;
}
.small-question {
  font-size: 1.3rem;
}
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.comparison article {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
}
.comparison .chosen {
  border-color: #8a68c8;
  background: #f6f2ff;
}
.mini-flow {
  display: flex;
  gap: 8px;
  margin: 24px 0;
}
.mini-flow span,
.decision-strip span {
  flex: 1;
  padding: 14px 10px;
  border-radius: 8px;
  background: white;
  border: 1px solid #d5cfdd;
  font-size: 0.82rem;
  text-align: center;
}
.decision-strip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 26px;
  border-radius: 16px;
  background: #f5f2fa;
}
.decision-strip b {
  margin-right: 8px;
  color: var(--accent);
}
blockquote {
  margin: 10px 0 0;
  padding: 40px;
  border-radius: 18px;
  background: #282535;
  color: white;
  font-family: var(--font-display);
  font-size: 1.4rem;
}
.inset {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 30px 6%;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 18px;
}
.feedback-rule {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.feedback-rule > div {
  padding: 28px;
  border-radius: 16px;
  background: #f2eff5;
}
.feedback-model {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 34px;
  border-radius: 18px;
  background: #f5f2f8;
  text-align: center;
}
.feedback-model > div {
  display: grid;
  width: 100%;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.feedback-model > div p {
  padding: 18px;
  border-radius: 12px;
  background: white;
}
.end-to-end {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}
.end-to-end > b {
  grid-column: 1/-1;
  margin-bottom: 10px;
}
.end-to-end span {
  padding: 20px 14px;
  border-radius: 12px;
  background: #292638;
  color: white;
  font-family: var(--font-display);
  font-weight: 600;
}
.end-to-end small {
  color: #dcd6e7;
  font-family: var(--font-body);
  font-weight: 400;
}
.learning-grid {
  grid-template-columns: 1fr 1fr;
}
.closing {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.35;
}
.reflection {
  padding-bottom: 30px;
}
.case-media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #f5f3f7;
}
.case-media img {
  display: block;
  width: 100%;
  height: auto;
}
.hero-media {
  min-height: 0;
  border: 0;
  background: transparent;
}
.hero-media img {
  max-height: 620px;
  object-fit: contain;
}
.case-media.tall {
  align-self: stretch;
}
.media-grid {
  display: grid;
  gap: 18px;
}
.structure-grid,
.indicator-grid {
  grid-template-columns: repeat(3, 1fr);
}
.highlight-grid {
  grid-template-columns: repeat(2, 1fr);
}
.media-grid figcaption {
  padding: 14px 16px;
  color: var(--muted);
  background: white;
  font-size: 0.9rem;
}
.feedback-intro {
  align-items: center;
}
.feedback-intro > * {
  min-width: 0;
}
.indicators-overview {
  width: 100%;
  max-width: 528px;
}
.media-label {
  padding-top: 6px;
}
.case-section h4.media-label {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
}
.change-states {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 28px;
  border-radius: 16px;
  background: #f5f2f8;
}
.change-states span {
  padding: 8px 13px;
  border-radius: 999px;
  background: white;
  border: 1px solid var(--line);
  font-size: 0.9rem;
}
.change-states span:not(:first-child) {
  color: #14538a;
  background: #e6f3ff;
  border-color: #beddf5;
}
.demo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.demo-grid .case-media {
  display: flex;
  flex-direction: column;
}
.demo-grid img {
  width: 100%;
  height: auto;
  object-fit: contain;
}
.demo-grid figcaption {
  padding: 16px 18px;
  color: var(--muted);
  background: white;
  font-size: 0.9rem;
}
@media (max-width: 850px) {
  body {
    font-size: 1.05rem;
  }
  .case-study {
    gap: 32px;
    padding: 64px 24px 90px;
  }
  .hero h1 {
    font-size: 2.8rem;
  }
  .hero-summary {
    font-size: 1.15rem;
  }
  .project-meta,
  .nutshell-grid,
  .two-columns,
  .three-columns,
  .comparison,
  .feedback-rule,
  .learning-grid {
    grid-template-columns: 1fr;
  }
  .persona-grid,
  .scope-grid,
  .finding-grid {
    grid-template-columns: 1fr 1fr;
  }
  .structure-grid,
  .highlight-grid,
  .indicator-grid {
    grid-template-columns: 1fr;
  }
  .challenge-summary {
    grid-template-columns: 1fr;
  }
  .process-flow {
    align-items: stretch;
  }
  .mini-flow,
  .decision-strip {
    flex-direction: column;
  }
  .end-to-end {
    grid-template-columns: 1fr;
  }
  .media-placeholder.product-screen {
    min-height: 440px;
  }
}
@media (max-width: 520px) {
  .persona-grid,
  .scope-grid,
  .finding-grid,
  .demo-grid {
    grid-template-columns: 1fr;
  }
  .project-meta {
    grid-template-columns: 1fr;
  }
  .hero h1 {
    font-size: 2.35rem;
  }
  .case-section {
    padding-top: 42px;
  }
  .question {
    padding: 24px;
    font-size: 1.3rem;
  }
  .feedback-model > div {
    grid-template-columns: 1fr;
  }
}
@media (min-width: 851px) {
  .case-study .hero h1 {
    max-width: 100%;
    font-size: clamp(3rem, 5vw, 5rem);
  }
}