/* Native disclosure navigation: usable with keyboard, touch and without JS. */
.primary-nav {
  gap: clamp(14px, 1.9vw, 28px);
}

.collaboration-nav {
  position: relative;
}

.collaboration-nav > summary {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 0;
  color: #47463f;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .01em;
  list-style: none;
  cursor: pointer;
}

.collaboration-nav summary::-webkit-details-marker {
  display: none;
}

.collaboration-nav > summary:hover,
.collaboration-nav[open] > summary {
  color: var(--orange-deep);
}

.collaboration-nav summary > span {
  font-size: 14px;
  transition: transform .2s ease;
}

.collaboration-nav[open] > summary > span,
.collaboration-enterprises[open] > summary > span {
  transform: rotate(180deg);
}

.collaboration-nav summary:focus-visible,
.collaboration-menu a:focus-visible,
.collaboration-pathway a:focus-visible,
.collaboration-foundation a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 4px;
}

.collaboration-menu {
  position: absolute;
  z-index: 60;
  top: calc(100% + 13px);
  right: -100px;
  width: min(520px, calc(100vw - 44px));
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
  padding: 25px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--orange);
  background: var(--paper);
  box-shadow: 0 16px 45px rgba(25, 25, 22, .15);
}

.collaboration-nav:not([open]) > .collaboration-menu {
  display: none;
}

.collaboration-menu-group > p,
.collaboration-enterprises > summary {
  margin: 0 0 12px;
  color: var(--orange-deep);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .08em;
  line-height: 1.5;
  text-transform: uppercase;
}

.collaboration-enterprises > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  list-style: none;
  cursor: pointer;
}

.collaboration-menu a {
  display: block;
  padding: 10px 0;
  font-size: 11px;
  line-height: 1.4;
  border-bottom: 1px solid var(--line);
}

.collaboration-menu .collaboration-overview-link {
  margin-top: 8px;
  border: 0;
  color: var(--orange-deep);
  font-size: 10px;
}

.collaboration-enterprises:not([open]) > div {
  display: none;
}

.collaboration-section {
  padding: clamp(80px, 9vw, 125px) 0;
  background: var(--paper-deep);
  scroll-margin-top: 12px;
}

.collaboration-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 48px;
}

.collaboration-heading h2 {
  font-family: var(--serif);
  font-size: clamp(52px, 6.3vw, 88px);
  font-weight: 400;
  letter-spacing: -.035em;
  line-height: .98;
  margin: 0;
}

.collaboration-heading em {
  color: var(--orange);
  font-weight: 400;
}

.collaboration-heading > p {
  max-width: 345px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.8;
  margin: 0 0 5px;
}

.collaboration-strategy {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  background: var(--dark);
  color: var(--paper);
}

.collaboration-strategy article {
  min-width: 0;
  padding: 30px;
  border-right: 1px solid var(--line-light);
}

.collaboration-strategy article:last-child {
  border-right: 0;
}

.collaboration-strategy article > span {
  color: var(--orange-light);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .14em;
}

.collaboration-strategy h3 {
  font-family: var(--serif);
  font-size: 30px;
  line-height: 1.08;
  font-weight: 400;
  margin: 20px 0 12px;
}

.collaboration-strategy p {
  margin: 0;
  color: #c5c3b8;
  font-size: 12px;
  line-height: 1.8;
}

.collaboration-foundation {
  margin: 0;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.9;
}

.collaboration-foundation strong {
  color: var(--ink);
}

.collaboration-foundation a {
  display: inline-block;
  margin-left: 10px;
  color: var(--orange-deep);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.collaboration-group-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin: 48px 0 22px;
}

.collaboration-group-heading > span {
  color: var(--orange-deep);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .12em;
}

.collaboration-group-heading h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 400;
  line-height: 1.15;
}

.collaboration-group-intro {
  max-width: 730px;
  margin: -4px 0 22px;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.8;
}

.collaboration-pathways {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.collaboration-pathway {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 27px 25px;
  background: var(--paper);
  border: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.collaboration-pathway .collaboration-path-label {
  margin: 0 0 19px;
  color: var(--orange-deep);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.collaboration-pathway h4 {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 400;
  line-height: 1.1;
  margin: 0 0 17px;
}

.collaboration-pathway p {
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.8;
}

.collaboration-pathway a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 14px 0 0;
  margin-top: auto;
  border-top: 1px solid var(--line);
  color: var(--orange-deep);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.6;
}

.collaboration-pathway a:hover {
  color: var(--ink);
}

.collaboration-note {
  max-width: 800px;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 10px;
  line-height: 1.8;
}

.collaboration-form-status {
  margin: -8px 0 22px;
  padding: 12px;
  color: var(--orange-deep);
  background: var(--paper-deep);
  font-size: 11px;
  line-height: 1.6;
}

.collaboration-form-status[hidden] {
  display: none;
}

.contact-form label > span {
  color: var(--ink-soft);
  font-weight: 400;
}

@media (min-width: 761px) and (max-width: 1100px) {
  .primary-nav { gap: 12px; }
  .primary-nav a, .collaboration-nav > summary { font-size: 10px; }
  .header-inner { gap: 14px; }
  .header-cta { padding-inline: 11px; font-size: 10px; gap: 9px; }
  .brand { width: 145px; flex-basis: 145px; }
  .collaboration-menu { right: -70px; }
}

@media (max-width: 760px) {
  .primary-nav {
    gap: 0;
    max-height: calc(100dvh - 72px);
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .collaboration-nav > summary {
    padding: 15px 0;
    font-size: 14px;
    border-bottom: 1px solid var(--line);
    justify-content: space-between;
  }

  .collaboration-menu {
    position: static;
    width: 100%;
    margin: 10px 0;
    padding: 19px 15px;
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    box-shadow: none;
  }

  .primary-nav .collaboration-menu a { font-size: 12px; padding: 11px 0; }
  .collaboration-enterprises > summary { font-size: 10px; }
  .collaboration-heading { display: block; margin-bottom: 32px; }
  .collaboration-heading h2 { font-size: clamp(46px, 9vw, 68px); }
  .collaboration-heading > p { margin-top: 24px; max-width: 480px; }
  .collaboration-strategy, .collaboration-pathways { grid-template-columns: minmax(0, 1fr); }
  .collaboration-strategy article { border-right: 0; border-bottom: 1px solid var(--line-light); padding: 27px; }
  .collaboration-strategy article:last-child { border-bottom: 0; }
  .collaboration-group-heading { flex-direction: column; gap: 13px; }
  .collaboration-pathway { scroll-margin-top: 82px; }
}

@media (prefers-reduced-motion: reduce) {
  .collaboration-nav summary > span { transition: none; }
}