/* Public research publication surface. All selectors are scoped to .pk-research. */
.pk-research {
  --pk-research-ink: #15283a;
  --pk-research-muted: #4d6072;
  --pk-research-line: #d8e2ea;
  --pk-research-soft: #f3f7fa;
  --pk-research-accent: #0b6fa4;
  --pk-research-accent-dark: #07567f;
  box-sizing: border-box;
  width: 100%;
  max-width: 78rem;
  margin: 0 auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  color: var(--pk-research-ink);
  font-size: 1rem;
  line-height: 1.68;
}

.pk-research a {
  color: var(--pk-research-accent-dark);
  text-underline-offset: .18em;
}

.pk-research a:hover {
  color: #053f5e;
}

.pk-research a:focus-visible,
.pk-research [tabindex="0"]:focus-visible {
  outline: 3px solid #f6b73c;
  outline-offset: 3px;
  border-radius: .2rem;
}

.pk-research__hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 21rem);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
  padding: clamp(2rem, 5vw, 4.5rem) 0;
  border-bottom: 1px solid var(--pk-research-line);
}

.pk-research__eyebrow {
  margin: 0 0 .75rem;
  color: var(--pk-research-accent-dark);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.pk-research__hero h1,
.pk-research__index-hero h1 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 4.7rem);
  line-height: 1.02;
  letter-spacing: -.035em;
  text-wrap: balance;
}

.pk-research__subtitle {
  max-width: 42rem;
  margin: 1.25rem 0 0;
  color: var(--pk-research-muted);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  line-height: 1.45;
}

.pk-research__framing {
  max-width: 44rem;
  margin: 1rem 0 0;
  font-weight: 600;
}

.pk-research__byline {
  margin: 1.5rem 0 .2rem;
  font-size: 1.08rem;
}

.pk-research__affiliation,
.pk-research__review {
  margin: .2rem 0;
  color: var(--pk-research-muted);
}

.pk-research__metadata {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.pk-research__metadata li {
  padding: .32rem .62rem;
  border: 1px solid var(--pk-research-line);
  border-radius: 999px;
  background: var(--pk-research-soft);
  color: var(--pk-research-muted);
  font-size: .87rem;
}

.pk-research__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.5rem;
}

.pk-research__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: .65rem 1rem;
  border: 1px solid var(--pk-research-accent);
  border-radius: .5rem;
  background: var(--pk-research-accent);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.pk-research a.pk-research__button {
  color: #fff;
}

.pk-research__button:hover {
  background: var(--pk-research-accent-dark);
  color: #fff;
}

.pk-research__button--secondary {
  background: #fff;
  color: var(--pk-research-accent-dark);
}

.pk-research a.pk-research__button--secondary {
  color: var(--pk-research-accent-dark);
}

.pk-research__cover {
  margin: 0;
}

.pk-research__cover img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--pk-research-line);
  border-radius: .55rem;
  box-shadow: 0 1.15rem 2.8rem rgba(21, 40, 58, .14);
}

.pk-research__cover figcaption {
  margin-top: .65rem;
  color: var(--pk-research-muted);
  font-size: .85rem;
}

.pk-research__toc {
  margin: 2rem 0 0;
  padding: 1.15rem 1.3rem;
  border: 1px solid var(--pk-research-line);
  border-radius: .55rem;
  background: var(--pk-research-soft);
}

.pk-research__toc strong {
  display: block;
  margin-bottom: .35rem;
}

.pk-research__toc ul {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem 1.15rem;
  margin: 0;
  padding-left: 1.2rem;
}

.pk-research__section {
  padding: clamp(2.4rem, 5vw, 4.4rem) 0;
  border-bottom: 1px solid var(--pk-research-line);
  scroll-margin-top: 2rem;
}

.pk-research__section h2 {
  max-width: 28ch;
  margin: 0 0 1.3rem;
  font-size: clamp(1.7rem, 3vw, 2.55rem);
  line-height: 1.18;
  letter-spacing: -.018em;
}

.pk-research__section h3 {
  margin: 1.8rem 0 .55rem;
  font-size: 1.22rem;
  line-height: 1.3;
}

.pk-research__prose {
  max-width: 68ch;
}

.pk-research__prose p {
  margin: 0 0 1.15rem;
}

.pk-research__abstract {
  padding-left: clamp(1rem, 3vw, 2rem);
  border-left: .25rem solid var(--pk-research-accent);
}

.pk-research__figure {
  max-width: 62rem;
  margin: 2rem 0 0;
}

.pk-research__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--pk-research-line);
  border-radius: .5rem;
}

.pk-research__figure figcaption {
  max-width: 68ch;
  margin-top: .8rem;
  color: var(--pk-research-muted);
  font-size: .92rem;
}

.pk-research__concepts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 0;
}

.pk-research__concept {
  padding: 1.15rem;
  border: 1px solid var(--pk-research-line);
  border-radius: .55rem;
  background: #fff;
}

.pk-research__concept h3,
.pk-research__concept p {
  margin: 0;
}

.pk-research__concept p {
  margin-top: .55rem;
  color: var(--pk-research-muted);
}

.pk-research__propositions {
  max-width: 72ch;
  margin: 1.5rem 0 0;
  padding-left: 1.5rem;
}

.pk-research__propositions li {
  margin-bottom: 1rem;
  padding-left: .45rem;
}

.pk-research__table-region {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--pk-research-line);
  border-radius: .55rem;
}

.pk-research__table {
  width: 100%;
  min-width: 48rem;
  border-collapse: collapse;
  background: #fff;
}

.pk-research__table th,
.pk-research__table td {
  padding: .8rem .9rem;
  border-bottom: 1px solid var(--pk-research-line);
  text-align: left;
  vertical-align: top;
}

.pk-research__table th {
  background: var(--pk-research-soft);
  font-size: .9rem;
}

.pk-research__table td:first-child {
  width: 25%;
  font-weight: 700;
}

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

.pk-research__audiences article {
  padding: 1.15rem;
  border: 1px solid var(--pk-research-line);
  border-radius: .55rem;
  background: var(--pk-research-soft);
}

.pk-research__audiences h3,
.pk-research__audiences p {
  margin-top: 0;
}

.pk-research__note {
  max-width: 68ch;
  padding: 1rem 1.15rem;
  border: 1px solid var(--pk-research-line);
  border-radius: .55rem;
  background: var(--pk-research-soft);
}

.pk-research__index-hero {
  max-width: 52rem;
  padding: clamp(2.5rem, 6vw, 5rem) 0 2.5rem;
}

.pk-research__index-intro {
  max-width: 62ch;
  color: var(--pk-research-muted);
  font-size: 1.16rem;
}

.pk-research__index-card {
  display: grid;
  grid-template-columns: minmax(10rem, 15rem) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
  margin-bottom: 4rem;
  padding: 1.2rem;
  border: 1px solid var(--pk-research-line);
  border-radius: .65rem;
  background: #fff;
}

.pk-research__index-card img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--pk-research-line);
  border-radius: .4rem;
}

.pk-research__index-card h2 {
  margin: .2rem 0 .7rem;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  line-height: 1.2;
}

.pk-research__index-meta {
  color: var(--pk-research-muted);
  font-size: .92rem;
}

@media (max-width: 52rem) {
  .pk-research__hero,
  .pk-research__concepts,
  .pk-research__audiences {
    grid-template-columns: 1fr;
  }

  .pk-research__cover {
    max-width: 22rem;
  }

  .pk-research__index-card {
    grid-template-columns: minmax(7rem, 10rem) minmax(0, 1fr);
  }
}

@media (max-width: 34rem) {
  .pk-research__hero h1,
  .pk-research__index-hero h1 {
    font-size: clamp(2rem, 11vw, 3rem);
  }

  .pk-research__actions,
  .pk-research__toc ul {
    display: grid;
  }

  .pk-research__button {
    width: 100%;
  }

  .pk-research__index-card {
    grid-template-columns: 1fr;
  }

  .pk-research__index-card img {
    max-width: 12rem;
  }
}

@media print {
  .pk-research__actions,
  .pk-research__toc {
    display: none;
  }

  .pk-research__section {
    break-inside: avoid;
  }
}