.brand img.brand-mark {
  object-fit: contain;
}

/* Compact paper explorer: one design at a time, copy left / figure right. */
.architecture-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.architecture-tabs button {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: transparent;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.4;
  cursor: pointer;
}
.architecture-tabs button > span { font: 0.65rem var(--mono); opacity: 0.65; }
.architecture-tabs button[aria-selected="true"] {
  color: var(--ink);
  background: var(--accent-soft);
  border-color: var(--signal);
}
.architecture-tabs button:hover { color: var(--ink); border-color: var(--signal); }
.architecture-tabs button:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
.architecture-figures {
  display: grid;
}
.architecture-panel[hidden] { display: none; }
.architecture-figure {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.7fr);
  align-items: center;
  gap: clamp(1.5rem, 3.5vw, 3.5rem);
  min-width: 0;
  margin: 0;
  padding: 1.75rem 0;
}
.architecture-caption {
  min-width: 0;
}
.architecture-caption-title {
  display: flex;
  align-items: start;
  gap: 1rem;
}
.architecture-index {
  padding-top: 0.1rem;
  color: var(--signal);
  font: 0.85rem var(--mono);
}
.architecture-label {
  color: var(--muted);
  font: 0.68rem var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.architecture-caption h3 {
  margin: 0.65rem 0 0;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.architecture-caption p {
  margin: 1.1rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
}
.architecture-image {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  width: 100%;
  padding: clamp(0.75rem, 1.5vw, 1.25rem);
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: #fff;
  color: #52615d;
  text-align: left;
  cursor: zoom-in;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}
.architecture-image:hover {
  border-color: var(--signal);
  box-shadow: 0 0.4rem 1.6rem rgb(23 32 25 / 5%);
}
.architecture-image:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 5px;
}
.architecture-image > img {
  display: block;
  width: 100%;
  height: clamp(15rem, 24vw, 22rem);
  object-fit: contain;
}
.architecture-image-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid #e9ece9;
  font: 0.65rem var(--mono);
  letter-spacing: 0.05em;
}
.architecture-image-meta > span:last-child {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.architecture-image-meta .icon { width: 1rem; height: 1rem; }
.architecture-source {
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.6;
}
.architecture-dialog {
  width: min(96vw, 100rem);
  max-width: 96vw;
  max-height: 92dvh;
  margin: auto;
  padding: clamp(1rem, 2.5vw, 2rem);
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--ink);
}
.architecture-dialog::backdrop {
  background: rgb(10 18 14 / 75%);
  backdrop-filter: blur(6px);
}
.architecture-dialog-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.architecture-dialog-top h2 {
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 500;
  line-height: 1.4;
}
.architecture-dialog-top button { flex-shrink: 0; }
#architecture-dialog-description {
  max-width: 80rem;
  margin: 0.75rem 0 1.25rem;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.7;
}
.architecture-dialog-scroll {
  overflow: auto;
  padding: 1rem;
  border-radius: 0.3rem;
  background: #fff;
}
.architecture-dialog-scroll img {
  display: block;
  width: 100%;
  min-width: 1000px;
  max-width: none;
  height: auto;
}
@media (max-width: 700px) {
  .architecture-figure { grid-template-columns: 1fr; gap: 1.25rem; padding: 1.25rem 0; }
  .architecture-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.4rem; }
  .architecture-tabs button { padding: 0.65rem; gap: 0.4rem; font-size: 0.7rem; text-align: left; }
  .architecture-image > img { height: auto; aspect-ratio: 1.93; }
  .architecture-caption p { font-size: 0.83rem; }
  .architecture-caption-title { gap: 0.75rem; }
  .architecture-image-meta { font-size: 0.58rem; }
}
@media (prefers-reduced-motion: reduce) {
  .architecture-image { transition: none; }
}

/* 1. Balanced sticky header */
.header {
  grid-template-columns: 1fr auto 1fr;
  border-bottom-color: color-mix(in srgb, var(--line) 82%, transparent);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(1.1rem);
  transition: background 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.header.scrolled {
  background: color-mix(in srgb, var(--paper) 95%, transparent);
  box-shadow: 0 0.5rem 2rem -1rem rgba(23, 32, 25, 0.08);
}

.header-identity {
  gap: 0.75rem;
}

.header .navigation {
  justify-content: center;
  gap: clamp(1rem, 2vw, 2rem);
  font-weight: 520;
  color: color-mix(in srgb, var(--ink) 84%, var(--muted));
}

.header .navigation a {
  transition: color 180ms ease;
}

.header .navigation a:hover {
  color: var(--ink);
}

.header .navigation a::after {
  height: 1.5px;
  background: var(--signal);
}

.language {
  min-height: 2.25rem;
  padding: 0 0.85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.language:hover {
  border-color: var(--line-strong);
  background: var(--surface);
  transform: translateY(-1px);
}

/* 2. Refined Hero typography & Top Resource Strip */
.research-hero {
  padding-bottom: clamp(2.5rem, 4.5vw, 4rem);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 85%, transparent);
}

.research-heading {
  grid-template-columns: minmax(0, 1.45fr) minmax(20rem, 0.85fr);
  gap: clamp(2rem, 6vw, 6.5rem);
  margin-bottom: 1.25rem;
}

.research-index {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
  color: var(--signal);
}

.research-index::before {
  content: "";
  display: inline-block;
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--signal) 16%, transparent);
}

.research-intro > p {
  max-width: 31rem;
  color: color-mix(in srgb, var(--ink) 74%, var(--muted));
  line-height: 1.72;
  text-wrap: pretty;
}

.research-intro > p strong {
  color: var(--ink);
  font-weight: 680;
}

.hero-ledger {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.ledger-cell {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.85rem;
  padding: 1.05rem 1.35rem 1.15rem;
  border-left: 1px solid var(--line);
  transition: background 200ms ease;
}

.ledger-cell:first-child {
  padding-left: 0;
  border-left: 0;
}

.ledger-cell:last-child {
  padding-right: 0;
}

.ledger-cell.is-live {
  padding-left: 1.15rem;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 22%, transparent) 0%, transparent 100%);
}

.ledger-cell.is-live::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--signal);
}

.ledger-cell.is-live:hover {
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 36%, transparent) 0%, color-mix(in srgb, var(--accent) 8%, transparent) 100%);
}

.ledger-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: var(--type-micro);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ledger-num {
  color: var(--muted);
}

.ledger-cell.is-live .ledger-num {
  color: var(--ink);
  font-weight: 650;
}

.ledger-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  color: var(--muted);
  font-size: 0.625rem;
}

.ledger-badge.is-live {
  color: var(--signal);
  font-weight: 700;
}

.ledger-badge.is-live > i {
  width: 0.36rem;
  height: 0.36rem;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0.18rem color-mix(in srgb, var(--signal) 22%, transparent);
}

.ledger-main {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem;
}

.ledger-main strong {
  display: block;
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--ink);
}

.ledger-cell.is-pending .ledger-main strong {
  color: color-mix(in srgb, var(--ink) 72%, var(--muted));
}

.ledger-main small {
  display: block;
  margin-top: 0.28rem;
  color: var(--muted);
  font-size: var(--type-label);
  line-height: 1.35;
}

.ledger-action {
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  flex: 0 0 2rem;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  transition: transform 200ms cubic-bezier(0.22, 1, 0.36, 1), background 200ms ease;
}

.ledger-action .icon {
  width: 0.9rem;
  height: 0.9rem;
}

.ledger-cell.is-live:hover .ledger-action {
  background: var(--signal);
  transform: translate(2px, -2px);
}

.ledger-glyph {
  color: color-mix(in srgb, var(--muted) 55%, var(--paper));
}

.ledger-glyph .icon {
  width: 1.1rem;
  height: 1.1rem;
}

/* One-line resource links, in the style of a paper project page */
.hero-links-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.85rem;
  margin-bottom: clamp(1.5rem, 2.5vw, 2rem);
  padding: 0.7rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 0.875rem;
  line-height: 1;
}

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 1.5rem;
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.hero-link > .icon {
  width: 0.95rem;
  height: 0.95rem;
  flex-basis: 0.95rem;
}

.hero-link.is-live {
  color: var(--ink);
  font-weight: 600;
  transition: color 160ms ease;
}

.hero-link.is-live > .icon {
  color: var(--signal);
}

.hero-link .hero-link-arrow {
  width: 0.72rem;
  height: 0.72rem;
  flex-basis: 0.72rem;
  color: var(--ink);
  transition: transform 160ms ease, color 160ms ease;
}

.hero-link.is-live:hover {
  color: var(--signal);
}

.hero-link.is-live:hover .hero-link-arrow {
  color: var(--signal);
  transform: translate(1px, -1px);
}

.hero-link.is-pending {
  color: var(--muted);
  font-weight: 500;
}

.hero-link.is-pending > .icon {
  color: var(--muted);
  opacity: 0.72;
}

.hero-link.is-pending small {
  color: color-mix(in srgb, var(--muted) 78%, var(--paper));
  font-family: var(--mono);
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.hero-links-sep {
  color: var(--line-strong);
  font-size: 0.8rem;
  user-select: none;
}

.hero-links-affiliation {
  margin-left: auto;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

@media (max-width: 560px) {
  .hero-links-line {
    gap: 0.45rem 0.6rem;
    font-size: 0.8125rem;
  }
}

/* 3. Media frames, cards, and subtle editorial depth */
.research-showcase {
  border: 1px solid color-mix(in srgb, var(--ink) 14%, transparent);
  border-radius: 1.05rem;
  box-shadow:
    0 1.75rem 4rem -1.5rem rgba(23, 32, 25, 0.22),
    0 0.35rem 1rem -0.35rem rgba(23, 32, 25, 0.08);
}

.showcase-top .video-label {
  padding: 0.42rem 0.7rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(8, 16, 10, 0.48);
  backdrop-filter: blur(0.65rem);
}

.preview-toggle {
  top: 4.1rem;
  right: 1.5rem;
  backdrop-filter: blur(0.65rem);
}

.journey-screen,
.journey-panel,
.draft-stage,
.camera-control-art,
.longform-player,
.research-system {
  box-shadow:
    0 1.25rem 3rem -1.4rem rgba(23, 32, 25, 0.1),
    0 0.25rem 0.75rem -0.25rem rgba(23, 32, 25, 0.04);
}

.journey-panel {
  background: color-mix(in srgb, var(--surface) 88%, white);
}

.world-visual {
  border-radius: 0.55rem;
  border: 1px solid color-mix(in srgb, var(--ink) 10%, transparent);
  box-shadow: 0 0.85rem 2rem -1rem rgba(23, 32, 25, 0.14);
  transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1), box-shadow 320ms ease;
}

.world-card:hover .world-visual {
  transform: translateY(-3px);
  box-shadow: 0 1.25rem 2.6rem -1rem rgba(23, 32, 25, 0.22);
}

.world-card:hover .card-arrow {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.world-number,
.world-duration {
  padding: 0.28rem 0.52rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(8, 16, 10, 0.48);
  backdrop-filter: blur(0.45rem);
}

.research-node {
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

.research-node:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--signal) 45%, var(--line));
  box-shadow: 0 0.65rem 1.5rem -0.75rem rgba(23, 32, 25, 0.12);
}

.footer {
  border-top: 1px solid var(--line);
}

@media (max-width: 1250px) {
  .header {
    grid-template-columns: auto 1fr auto;
    height: auto;
    min-height: var(--header-height);
    gap: 12px;
    padding-top: 12px;
    padding-bottom: 12px;
  }
  .header .navigation {
    gap: 20px;
  }
}

@media (max-width: 1024px) {
  .hero-ledger {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .ledger-cell:nth-child(3) {
    padding-left: 0;
    border-left: 0;
  }
  .ledger-cell:nth-child(n+3) {
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 900px) {
  .research-heading {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 760px) {
  .header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .header-identity {
    gap: 10px;
  }
  .header .brand {
    font-size: 16px;
  }
  .header-right {
    margin-left: auto;
  }
}

@media (max-width: 560px) {
  .hero-ledger {
    grid-template-columns: 1fr;
  }
  .ledger-cell {
    padding-left: 0 !important;
    padding-right: 0 !important;
    border-left: 0 !important;
    border-top: 1px solid var(--line);
  }
  .ledger-cell:first-child {
    border-top: 0;
  }
}

/* 4. Final polish — same worldline theme, clearer focus */
[data-theme="research"] body {
  background-image:
    radial-gradient(58rem 30rem at 88% -12%, color-mix(in srgb, var(--accent) 13%, transparent), transparent 62%),
    radial-gradient(44rem 26rem at -12% 18%, color-mix(in srgb, var(--signal) 6%, transparent), transparent 64%);
  background-repeat: no-repeat;
}

.research-heading h1 {
  font-size: clamp(4.2rem, 8vw, 7.75rem);
}

.hero-tagline {
  color: color-mix(in srgb, var(--ink) 85%, var(--paper));
  font-size: clamp(1.3rem, 2vw, 1.95rem);
  text-wrap: balance;
}

.research-heading {
  align-items: stretch;
}

.hero-identity {
  align-self: end;
}

.research-intro {
  display: flex;
  align-self: stretch;
  flex-direction: column;
  justify-content: flex-end;
}

.hero-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.7rem;
  margin-top: 1.05rem;
  color: color-mix(in srgb, var(--ink) 62%, var(--paper));
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  line-height: 1.5;
}

.hero-specs span + span::before {
  content: "·";
  margin-right: 0.7rem;
  color: var(--line-strong);
}

.hero-links-line {
  border-top: 0;
}

.hero-links-line > a:first-child {
  color: var(--signal);
  font-weight: 700;
}

.hero-links-line > a:first-child .hero-link-arrow {
  color: var(--signal);
}

.research-showcase {
  height: clamp(24rem, 42vw, 36rem);
}

.showcase-caption h2 {
  font-size: clamp(2rem, 3vw, 3rem);
}

.round-play {
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0.6rem 1.6rem -0.4rem rgba(8, 16, 8, 0.45);
}

.round-play:hover {
  background: #fff;
  color: var(--ink);
}

main > .section + .section {
  border-top: 0;
  margin-top: -10px;
}

.section-heading .eyebrow,
.research-copy > .eyebrow {
  color: var(--signal);
}

.section-heading .eyebrow::before,
.research-copy > .eyebrow::before {
  content: "";
  width: 1.6rem;
  height: 1px;
  background: var(--signal);
}

.section-heading > p {
  max-width: 30rem;
  justify-self: end;
  color: color-mix(in srgb, var(--ink) 68%, var(--muted));
}

.journey-section .section-heading {
  grid-template-columns: minmax(0, 1.7fr) minmax(18rem, 0.65fr);
  align-items: start;
}

.journey-section .section-heading > p {
  justify-self: start;
  margin-top: calc(1.5em + 1.25rem);
}

.journey-shell {
  align-items: stretch;
}

.journey-screen {
  aspect-ratio: 1280 / 704;
  min-height: 0;
  border-color: color-mix(in srgb, var(--ink) 18%, transparent);
  box-shadow: 0 1.4rem 3.2rem -1.5rem rgba(23, 32, 25, 0.2);
}

.journey-screen > video {
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
}

.journey-panel,
.draft-stage,
.camera-control-art,
.longform-player {
  box-shadow: none;
}

.journey-panel {
  display: flex;
  height: 100%;
  flex-direction: column;
  padding: 1.15rem 1.2rem;
}

.journey-tabs {
  min-height: 2.75rem;
  flex: none;
  align-items: center;
  gap: 1.35rem;
  padding-bottom: 0.7rem;
}

.journey-tabs button {
  position: relative;
  min-height: 2rem;
  padding: 0;
  border: 0;
  border-radius: 0;
}

.journey-tabs button:hover {
  border-color: transparent;
  color: var(--ink);
}

.journey-tabs button.active,
[data-theme="immersive"] .journey-tabs button.active {
  background: transparent;
  color: var(--ink);
  font-weight: 650;
}

.journey-tabs button.active::after {
  position: absolute;
  right: 0;
  bottom: -0.76rem;
  left: 0;
  height: 2px;
  background: var(--signal);
  content: "";
}

.journey-command {
  min-height: 0;
  flex: 1;
  margin-top: 0.9rem;
}

.journey-step.active {
  background: color-mix(in srgb, var(--accent) 15%, transparent);
}

.world-card-caption h3 {
  transition: color 180ms ease;
}

.world-card:hover .world-card-caption h3 {
  color: var(--signal);
}

.research-system {
  border-top: 2px solid var(--ink);
  box-shadow: none;
}

/* 8. Camera control: one clear hierarchy, aligned edge to edge */
.camera-section .section-heading {
  grid-template-columns: minmax(0, 1.7fr) minmax(18rem, 0.65fr);
  align-items: start;
}

.camera-section .section-heading > p {
  justify-self: start;
  margin-top: calc(1.5em + 1.25rem);
}

.camera-rail {
  display: flex;
  height: 100%;
  padding: 0;
  border-top: 1px solid var(--ink);
  flex-direction: column;
}

.camera-rail > .camera-rail-heading {
  flex: none;
  margin: 0;
  padding: 0.9rem 0 0.85rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font: 650 var(--type-micro) var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.camera-rail > .rail-keyboard-panel {
  min-height: 0;
  margin: 0;
  padding: clamp(1.25rem, 2vw, 1.7rem) 0;
  border-bottom: 0;
  justify-content: center;
  gap: clamp(1.25rem, 2.2vw, 1.8rem);
}

.camera-section .camera-keyboard-groups {
  gap: 1rem;
}

.camera-section .key-group {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  gap: 0.75rem;
}

.camera-section .key-group > small {
  color: color-mix(in srgb, var(--ink) 58%, var(--muted));
  font-weight: 650;
  letter-spacing: 0.12em;
}

.camera-section .rail-keyboard-panel .control-readout {
  display: flex;
  width: auto;
  align-items: baseline;
  justify-content: center;
  gap: 0.45rem;
  padding: 0 0 0 0.7rem;
  border-top: 0;
  border-left: 2px solid var(--signal);
  text-transform: uppercase;
}

.camera-section .control-readout strong {
  margin: 0;
  color: var(--ink);
  font: 700 0.8rem var(--mono);
  letter-spacing: 0.04em;
}

.camera-section .control-readout span {
  color: var(--muted);
  font: 600 var(--type-micro) var(--mono);
  letter-spacing: 0.055em;
}

.camera-section .control-readout span::before {
  margin-right: 0.45rem;
  color: var(--signal);
  content: "·";
}

.camera-rail > .rail-trajectory-input {
  flex: none;
  margin: 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 0;
  gap: 0.7rem;
}

.camera-rail .rail-trajectory-input .icon {
  width: 1.15rem;
  height: 1.15rem;
}

.camera-rail .rail-trajectory-input strong {
  margin-bottom: 0.22rem;
  color: var(--ink);
  font: 650 var(--type-micro) var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.camera-rail .rail-trajectory-input p {
  font: var(--type-micro) var(--mono);
  letter-spacing: 0.045em;
  line-height: 1.4;
  text-transform: uppercase;
}

.camera-rail > .rail-status {
  flex: none;
  padding-top: 1.05rem;
  color: color-mix(in srgb, var(--muted) 76%, var(--paper));
  font: var(--type-micro) var(--mono);
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.camera-rail .rail-status i {
  width: 0.3rem;
  height: 0.3rem;
  background: var(--muted);
}

/* 9. Long video: aligned copy, compact metrics, full-width player */
.longform-section .section-heading {
  grid-template-columns: minmax(0, 1.7fr) minmax(18rem, 0.65fr);
  align-items: start;
}

.longform-section .section-heading > p {
  justify-self: start;
  margin-top: calc(1.5em + 1.25rem);
}

.longform-layout {
  grid-template-columns: 1fr;
  align-items: start;
  gap: 1rem;
}

.model-specs-heading {
  margin: 0 0 0.85rem;
  color: var(--muted);
  font: 600 0.75rem/1.5 var(--sans);
  letter-spacing: 0.04em;
}

.longform-rail {
  display: block;
  grid-row: 1;
  padding: 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.longform-rail .rail-index {
  display: none;
}

.longform-rail .stats {
  max-width: none;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  border: 0;
}

.longform-rail .stat,
.longform-rail .stat:nth-child(odd),
.longform-rail .stat:nth-child(even) {
  min-height: 5.8rem;
  padding: 0.8rem 1rem;
  border-bottom: 0;
  border-left: 1px solid var(--line);
}

.longform-rail .stat:first-child {
  border-left: 0;
}

.longform-rail .stat-value {
  font-size: clamp(1.9rem, 3vw, 2.65rem);
}

.longform-player {
  grid-row: 2;
}

/* 10. Borderless capability showcases */
.capability-showcase .section-heading {
  grid-template-columns: minmax(0, 1.7fr) minmax(18rem, 0.65fr);
  align-items: start;
}

.capability-showcase .section-heading > p {
  justify-self: start;
  margin-top: calc(1.5em + 1.25rem);
}

.capability-showcase-media {
  width: min(92%, 72rem);
  margin-inline: auto;
}

.capability-featured {
  margin: 0 0 clamp(1.8rem, 3vw, 2.8rem);
}

.capability-featured-frame {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--ink);
  background: var(--media);
}

.capability-featured-frame video {
  display: block;
  width: 100%;
  aspect-ratio: 1280 / 704;
  object-fit: cover;
}

.capability-featured-meta {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem;
  color: #fff;
  font: 650 var(--type-micro) var(--mono);
  letter-spacing: 0.08em;
  text-shadow: 0 1px 0.8rem rgba(0, 0, 0, 0.72);
  text-transform: uppercase;
}

.capability-featured-meta small {
  font: inherit;
  letter-spacing: 0.04em;
}

.capability-featured-open {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  border-color: color-mix(in srgb, var(--paper) 65%, transparent);
  background: color-mix(in srgb, var(--paper) 91%, transparent);
  color: var(--ink);
  backdrop-filter: blur(0.5rem);
}

.capability-featured-open:hover {
  border-color: var(--signal);
  background: var(--signal);
  color: #fff;
}

.capability-featured > figcaption {
  display: grid;
  grid-template-columns: minmax(12rem, 0.55fr) minmax(0, 1fr);
  align-items: start;
  gap: 1rem clamp(1.5rem, 3vw, 3rem);
  padding: 1rem 0 1.15rem;
  border-bottom: 1px solid var(--line);
}

.capability-featured > figcaption strong {
  color: var(--ink);
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  font-weight: 620;
  line-height: 1.25;
}

.capability-featured > figcaption span {
  max-width: 43rem;
  color: var(--muted);
  font-size: var(--type-small);
  line-height: 1.55;
}

.capability-video-strip {
  display: grid;
  width: 100%;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2vw, 1.6rem);
  padding-top: 1rem;
  border-top: 1px solid var(--line-strong);
}

.capability-video {
  min-width: 0;
  margin: 0;
}

.capability-video-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: var(--media);
  color: var(--ink);
  cursor: pointer;
}

.capability-video-frame video {
  display: block;
  width: 100%;
  aspect-ratio: 1280 / 704;
  object-fit: cover;
  opacity: 0.76;
  filter: saturate(0.82);
  transition: opacity 250ms ease, transform 500ms cubic-bezier(0.22, 1, 0.36, 1), filter 250ms ease;
}

.capability-video-frame:hover video,
.capability-video-frame:focus-visible video,
.capability-video.active .capability-video-frame video {
  opacity: 1;
  filter: saturate(1);
}

.capability-video-frame:hover video,
.capability-video-frame:focus-visible video {
  transform: scale(1.025);
}

.capability-video-action {
  position: absolute;
  right: 0.8rem;
  bottom: 0.8rem;
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--paper) 64%, transparent);
  border-radius: 50%;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  color: var(--ink);
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.capability-video-action .icon {
  width: 0.8rem;
  height: 0.8rem;
  margin-left: 0.08rem;
}

.capability-video-frame:hover .capability-video-action,
.capability-video-frame:focus-visible .capability-video-action,
.capability-video.active .capability-video-action {
  background: var(--signal);
  color: #fff;
  transform: translateY(-0.12rem);
}

.capability-video figcaption {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.3rem 0.8rem;
  padding: 0.85rem 0 0.9rem;
  border-bottom: 1px solid var(--line);
}

.capability-video figcaption span {
  grid-column: 1 / -1;
  color: var(--signal);
  font: 650 var(--type-micro) var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.capability-video figcaption strong {
  overflow: hidden;
  color: var(--ink);
  font-size: var(--type-small);
  font-weight: 600;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.capability-video figcaption small {
  align-self: center;
  color: var(--muted);
  font: var(--type-micro) var(--mono);
}

.capability-video.active figcaption {
  border-bottom-color: var(--signal);
}

.footer {
  border-top-color: var(--line-strong);
}

.back-top {
  transition: color 180ms ease;
}

.back-top:hover {
  color: var(--signal);
}

@media (max-width: 760px) {
  .hero-links-affiliation {
    display: none;
  }
}

@media (max-width: 900px) {
  .research-intro {
    padding-left: 0;
    border-left: 0;
  }

  .journey-panel {
    height: auto;
  }

  .journey-command {
    min-height: 18rem;
  }

  .camera-rail {
    height: auto;
  }

  .capability-showcase-media {
    width: 100%;
  }

  .capability-video-strip {
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .journey-section .section-heading > p,
  .camera-section .section-heading > p,
  .longform-section .section-heading > p,
  .capability-showcase .section-heading > p {
    margin-top: 1.25rem;
  }

  .longform-rail .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .longform-rail .stat:nth-child(3) {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .longform-rail .stat:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .capability-video-strip {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .capability-featured > figcaption {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }
}

@media (max-width: 560px) {
  .research-heading h1 {
    font-size: 3.4rem;
  }

  .research-showcase {
    height: 88vw;
  }
}

/* Research-page editorial refinement. Keep the paper / forest / lime identity. */
[data-theme="research"] {
  --header-height: 4.5rem;
  --gutter: clamp(1.25rem, 5.5vw, 5rem);
}

[data-theme="research"] .header {
  min-height: var(--header-height);
}

[data-theme="research"] .research-hero {
  padding-top: clamp(2rem, 3.5vw, 3.5rem);
  padding-bottom: clamp(2rem, 4vw, 3rem);
  border-bottom: 0;
}

.hero-overline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero-overline .research-index { margin: 0; font-size: 0.68rem; }
.hero-byline { color: var(--muted); font: 0.65rem var(--mono); letter-spacing: 0.1em; }
.hero-byline span { margin: 0 0.75rem; color: var(--line-strong); }

[data-theme="research"] .research-heading {
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.9fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  margin-bottom: 1.9rem;
}

[data-theme="research"] .research-heading > .hero-identity,
[data-theme="research"] .research-heading > .research-intro {
  align-self: center;
  min-width: 0;
}

[data-theme="research"] .research-heading h1 {
  font-size: clamp(4.2rem, 8vw, 7.75rem);
  line-height: 1;
  letter-spacing: -0.065em;
}

[data-theme="research"] .title-asterisk { vertical-align: 0.75em; font-size: 0.32em; }
[data-theme="research"] .hero-tagline {
  margin-top: 1rem;
  font-size: clamp(1.35rem, 2.15vw, 2.05rem);
  line-height: 1.25;
}
.hero-tagline > span { display: block; color: #53752f; }

[data-theme="research"] .research-intro {
  justify-content: center;
  padding: 0;
  border: 0;
}
[data-theme="research"] .research-intro > p {
  font-size: clamp(0.95rem, 1.18vw, 1.08rem);
  line-height: 1.75;
}

[data-theme="research"] .hero-links-line {
  min-height: 3.3rem;
  gap: 0.6rem;
  margin-bottom: clamp(2rem, 3.6vw, 3.25rem);
  padding: 0;
  border: 0;
}
[data-theme="research"] .hero-links-sep { display: none; }
[data-theme="research"] .hero-link {
  min-height: 2.8rem;
  padding: 0.75rem 1rem;
  gap: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  background: transparent;
  color: var(--ink);
  font-size: 0.76rem;
  transition: background 180ms, border-color 180ms, transform 180ms;
}
[data-theme="research"] .hero-link:hover { background: var(--surface); border-color: var(--signal); transform: translateY(-2px); }
[data-theme="research"] .hero-link:first-child {
  background: var(--ink);
  color: var(--accent);
  border-color: var(--ink);
  font-weight: 700;
  padding-inline: 1rem;
}
[data-theme="research"] .hero-link:first-child:hover { background: #2c3c29; border-color: #2c3c29; }
[data-theme="research"] .hero-link:first-child .hero-link-arrow { color: var(--accent); }
[data-theme="research"] .hero-links-affiliation { font-size: 0.62rem; letter-spacing: 0.035em; }

[data-theme="research"] .research-showcase {
  height: clamp(21.25rem, 30.6vw, 28rem);
  border: 0;
  border-radius: 0.5rem;
  box-shadow: 0 16px 36px -25px #17201980;
}
[data-theme="research"] .research-showcase::after {
  background: linear-gradient(180deg, #0710084d, transparent 28%, transparent 45%, #071008dd);
}
[data-theme="research"] .research-showcase.trailer-showcase {
  width: min(100%, 64rem);
  height: auto;
  aspect-ratio: 16 / 9;
  margin-inline: auto;
  background: #080c09;
}
[data-theme="research"] .research-showcase.trailer-showcase::after { display: none; }
.trailer-showcase .trailer-video { width: 100%; height: 100%; object-fit: contain; }
[data-theme="research"] .showcase-top { top: 1.3rem; }
.showcase-spec { color: #ffffffc9; }
.showcase-spec > span { opacity: 0.4; margin-inline: 0.4rem; }
[data-theme="research"] .showcase-caption { left: 2rem; right: 2rem; bottom: 2rem; }
[data-theme="research"] .showcase-caption h2 { font-size: clamp(1.65rem, 2.65vw, 2.5rem); max-width: 45rem; }
[data-theme="research"] .showcase-caption p { max-width: 37rem; margin-top: 0.65rem; font-size: 0.8rem; }
[data-theme="research"] .research-showcase .preview-toggle { top: 3.7rem; right: 1.5rem; }
.hero-watch {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: 1.3rem;
  min-height: 3rem;
  padding: 0.85rem 1.2rem;
  border: 1px solid #ffffff50;
  border-radius: 0.25rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 0.76rem;
  font-weight: 650;
  transition: background 180ms, transform 180ms;
}
.hero-watch .icon { width: 1rem; height: 1rem; }
.hero-watch:hover { background: #e5ffb4; transform: translateY(-2px); }

.hero-scene-strip {
  display: grid;
  grid-template-columns: 0.65fr repeat(3, 1fr);
  gap: 1rem;
  align-items: center;
  margin-top: 1rem;
}
.hero-scene-label { font: 0.62rem/1.7 var(--mono); letter-spacing: 0.08em; color: var(--muted); }
.hero-scene-choice {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.8rem;
  padding: 0.6rem 0;
  border-bottom: 2px solid var(--line);
  text-align: left;
  transition: border-color 180ms;
}
.hero-scene-choice img { width: 4.5rem; height: 2.8rem; flex-shrink: 0; border-radius: 0.15rem; opacity: 0.7; transition: opacity 180ms; }
.hero-scene-choice > span { min-width: 0; }
.hero-scene-choice small { display: block; margin-bottom: 0.35rem; color: var(--muted); font: 0.54rem var(--mono); letter-spacing: 0.04em; }
.hero-scene-choice strong { font-size: 0.73rem; font-weight: 600; line-height: 1.4; }
.hero-scene-choice > .icon { width: 0.9rem; flex-shrink: 0; margin-left: auto; opacity: 0; }
.hero-scene-choice[aria-pressed="true"], .hero-scene-choice:hover { border-color: var(--signal); }
.hero-scene-choice[aria-pressed="true"] img, .hero-scene-choice:hover img { opacity: 1; }
.hero-scene-choice[aria-pressed="true"] > .icon { opacity: 1; color: var(--signal); }

.hero-proof {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 1.7rem 0;
  margin-top: 2.6rem;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}
.hero-proof > div { display: flex; flex-direction: column; gap: 0.7rem; padding-left: 2rem; border-left: 1px solid var(--line); }
.hero-proof > div:first-child { border-left: 0; padding-left: 0; }
.hero-proof strong { font-size: clamp(2.4rem, 3.6vw, 3.5rem); font-weight: 500; letter-spacing: -0.065em; line-height: 1; }
.hero-proof strong > span { color: #53752f; font-size: 0.68em; margin-left: 0.04em; }
.hero-proof > div > span { color: var(--muted); font: 0.66rem/1.5 var(--mono); }
.hero-discover { display: flex; align-items: center; justify-content: space-between; padding: 1.15rem 0; color: var(--muted); font-size: 0.75rem; }
.hero-discover .icon { width: 1rem; height: 1rem; color: var(--signal); }
.hero-discover:hover { color: var(--ink); }

[data-theme="research"] main > .section {
  padding-top: clamp(2.2rem, 3.84vw, 3.4rem);
  padding-bottom: clamp(2.2rem, 3.52vw, 3.2rem);
}
[data-theme="research"] .section-heading {
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 3rem;
  align-items: end;
  margin-bottom: 2rem;
}
[data-theme="research"] .section-heading h2 { font-size: clamp(2rem, 3.3vw, 3.2rem); line-height: 1.12; margin-top: 1rem; }
[data-theme="research"] .section-heading > p { margin-top: 0; max-width: 32rem; font-size: 0.88rem; line-height: 1.75; }
.section-heading .eyebrow { text-transform: none; }
[data-theme="research"] .section-heading .eyebrow { font-size: 0.65rem; letter-spacing: 0.12em; }
[data-theme="research"] .journey-shell { grid-template-columns: minmax(0, 1.7fr) minmax(0, 0.8fr); gap: 1.5rem; }
[data-theme="research"] .journey-screen { border-radius: 0.4rem; box-shadow: none; }
[data-theme="research"] .journey-panel { border-radius: 0; background: transparent; padding: 0; border: 0; }
[data-theme="research"] .journey-command { border-radius: 0.3rem; }
.prompt-history {
  position: relative;
  flex: 1 1 0;
  min-height: 10rem;
  max-height: 22rem;
  overflow-y: auto;
  padding: 0.85rem;
  scrollbar-width: thin;
  scrollbar-color: #53664b #111a14;
  background: #111a14;
  font: 0.72rem/1.65 var(--mono);
}
.prompt-history-empty { color: #91a18d; }
.prompt-history-entry { padding: 0.8rem 0 0.8rem 0.7rem; border-left: 2px solid #354139; color: #aebbaa; }
.prompt-history-entry + .prompt-history-entry { margin-top: 0.65rem; }
.prompt-history-entry header { display: flex; justify-content: space-between; gap: 0.75rem; margin-bottom: 0.4rem; color: #91a18d; font-size: 0.6rem; }
.prompt-history-entry p { white-space: pre-wrap; overflow-wrap: anywhere; }
.prompt-history-entry.active { border-color: var(--accent); color: #f2f5ef; }
.prompt-history-entry.active header { color: var(--accent); }
.journey-command .prompt-console-bar,
.journey-command .prompt-composer { flex-shrink: 0; }
.journey-command .prompt-composer [data-command-text] { max-height: 5.5rem; overflow-y: auto; }

/* A paper-toned transcript, using the same warm neutrals as the page. */
.journey-command {
  --accent: var(--signal);
  color-scheme: light;
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--ink) 3%, transparent);
}

[data-theme="immersive"] .journey-command {
  --paper: #f4f1e9;
  --surface: #fbfaf5;
  --ink: #172019;
  --muted: #626b62;
  --line: #cdd1c6;
  --line-strong: #aeb6a9;
  --signal: #587b2f;
}

.journey-command .prompt-console-bar,
.journey-command .journey-command-meta {
  border-color: var(--line);
  background: var(--paper);
  color: var(--muted);
}

.journey-command .prompt-console-bar {
  min-height: 3rem;
  flex-wrap: wrap;
  padding: 0.6rem 0.85rem;
  gap: 0.5rem;
  font-size: 0.56rem;
  letter-spacing: 0.04em;
}

.journey-command .prompt-console-bar > div {
  margin-left: auto;
}

.journey-command .prompt-console-bar i {
  box-shadow: none;
}

.journey-command .prompt-console-bar .icon-button {
  border-color: var(--line);
  background: var(--surface);
  color: var(--signal);
}

.journey-command .prompt-console-bar .icon-button:hover {
  border-color: var(--signal);
  background: color-mix(in srgb, var(--signal) 8%, var(--surface));
}

.journey-command .prompt-history {
  min-height: 0;
  max-height: none;
  padding: 1rem 0.85rem;
  scrollbar-color: var(--line-strong) var(--surface);
  scrollbar-gutter: stable;
  background: var(--surface);
  font-size: 0.73rem;
  line-height: 1.75;
}

.journey-command .prompt-history-empty,
.journey-command .prompt-history-entry header {
  color: var(--muted);
}

.journey-command .prompt-history-entry {
  padding: 0.7rem 0.65rem 0.7rem 0.85rem;
  border-color: var(--line);
  color: var(--muted);
}

.journey-command .prompt-history-entry.active {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--signal) 5%, var(--surface));
  color: var(--ink);
}

.journey-command .prompt-history-entry.active header {
  color: var(--accent);
}

.journey-command .prompt-composer {
  min-height: 3.75rem;
  padding: 0.75rem 0.85rem;
  border-color: var(--line);
  background: color-mix(in srgb, var(--paper) 55%, var(--surface));
  color: var(--ink);
}

.journey-command:not(.is-typing) .typing-cursor {
  opacity: 0;
  animation: none;
}

.journey-command .journey-enter-key kbd {
  border-color: var(--line-strong);
  background: var(--surface);
  box-shadow: 0 2px 0 var(--line);
}

.journey-command.is-submitting .journey-enter-key kbd {
  color: #ffffff;
  background: var(--signal);
  box-shadow: none;
}

.journey-command :focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -3px;
}

[data-theme="research"] .longform-layout { width: 100%; max-width: none; }
[data-theme="research"] .longform-player { border-radius: 0.35rem; }
[data-theme="research"] .longform-rail .stat-value { font-size: 1.7rem; }
[data-theme="research"] .longform-rail .stat { min-height: 5.2rem; }
[data-theme="research"] .capability-showcase-media {
  display: grid;
  width: 100%;
  grid-template-columns: minmax(0, 3.1fr) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}
[data-theme="research"] .capability-showcase-media .capability-video-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  border: 0;
}
[data-theme="research"] .capability-featured-frame,
[data-theme="research"] .capability-video-frame { border-radius: 0.3rem; }
[data-theme="research"] .capability-video-frame video { aspect-ratio: 2.8; }
[data-theme="research"] .capability-video figcaption { gap: 0.25rem 0.5rem; padding: 0.65rem 0 0.7rem; }
[data-theme="research"] .capability-video figcaption span { font-size: 0.58rem; }
[data-theme="research"] .capability-video figcaption strong { font-size: 0.73rem; }
[data-theme="research"] .capability-featured > figcaption { grid-template-columns: 1fr; gap: 0.45rem; padding-top: 1rem; }
[data-theme="research"] .capability-featured > figcaption strong { font-size: 1rem; }
[data-theme="research"] .capability-featured > figcaption span { font-size: 0.8rem; }
[data-theme="research"] .capability-featured { margin-bottom: 0; }

.project-resources {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  max-width: calc(var(--content) - 2 * var(--gutter));
  margin: 0 auto 4rem;
  padding: 3.5rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: #e9eddf;
}
.project-resources .eyebrow { color: #53752f; font-size: 0.65rem; }
.project-resources h2 { margin-top: 1.2rem; font: 700 clamp(2.2rem, 3.8vw, 3.6rem)/1.12 var(--display); letter-spacing: -0.035em; }
.project-resources p { max-width: 24rem; margin: 1.2rem 0 1.5rem; font-size: 0.88rem; line-height: 1.7; color: var(--muted); }
.project-resources .button { min-height: 3rem; font-size: 0.8rem; }
.project-resource-list { align-self: center; }
.project-resource {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  padding: 1.45rem 0;
  border-bottom: 1px solid #c5cdbb;
  transition: color 180ms;
}
.project-resource:first-child { border-top: 1px solid #c5cdbb; }
.project-resource > small { align-self: start; color: var(--signal); font: 0.65rem var(--mono); padding-top: 0.3rem; }
.project-resource > span { display: grid; gap: 0.5rem; }
.project-resource strong { font-weight: 600; font-size: 1.1rem; }
.project-resource > span > span { font-size: 0.75rem; color: var(--muted); }
.project-resource > .icon { margin-left: auto; width: 1.1rem; }
.project-resource:hover { color: #53752f; }

@media (min-width: 901px) {
  .longform-layout,
  #world-memory .capability-showcase-media {
    width: min(83%, 65rem);
  }
  [data-theme="research"] .longform-layout {
    width: 90%;
  }
  [data-theme="research"] #world-memory .capability-showcase-media {
    width: min(90%, 65rem);
  }
  [data-theme="research"] .research-heading > .research-intro { position: relative; top: 1.25rem; }
  [data-theme="research"] .longform-layout { grid-template-columns: 0.23fr 1fr; gap: 2rem; align-items: stretch; }
  [data-theme="research"] .longform-player { grid-column: 2; grid-row: 1; }
  [data-theme="research"] .longform-rail { grid-column: 1; grid-row: 1; }
  [data-theme="research"] .longform-rail .stats { grid-template-columns: 1fr; height: 100%; }
  [data-theme="research"] .longform-rail .stat { align-items: start; padding: 1rem 0; border: 0; border-bottom: 1px solid var(--line); }
  [data-theme="research"] .longform-rail .stat:last-child { border-bottom: 0; }
  [data-theme="research"] .longform-rail .stat-value { font-size: clamp(2rem, 3vw, 3rem); }
  [data-theme="research"] .longform-rail .stat-label { font-size: 0.65rem; text-align: left; }
}

@media (max-width: 1100px) {
  .hero-links-affiliation { display: none; }
  .hero-scene-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .hero-scene-label { display: none; }
  .hero-scene-choice { gap: 0.6rem; }
  .hero-scene-choice > .icon { display: none; }
  .project-resources { margin-inline: var(--gutter); padding: 2.5rem; gap: 2rem; }
}

@media (max-width: 900px) {
  .hero-byline { font-size: 0.55rem; }
  [data-theme="research"] .research-heading { grid-template-columns: 1fr; gap: 1.5rem; }
  [data-theme="research"] .research-heading h1 { font-size: clamp(3.4rem, 10vw, 6rem); }
  [data-theme="research"] .research-intro > p { max-width: 38rem; }
  [data-theme="research"] .research-showcase { height: 21.25rem; }
  [data-theme="research"] .showcase-caption { left: 1.4rem; right: 1.4rem; bottom: 1.4rem; }
  .hero-watch { gap: 0.8rem; padding-inline: 0.8rem; }
  [data-theme="research"] .section-heading { gap: 2rem; }
  [data-theme="research"] .journey-shell { grid-template-columns: 1fr; }
  [data-theme="research"] .journey-command { min-height: 16rem; }
  [data-theme="research"] .capability-showcase-media { grid-template-columns: 1fr; }
  [data-theme="research"] .capability-showcase-media .capability-video-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
  [data-theme="research"] .capability-video-frame video { aspect-ratio: 16 / 9; }
}

@media (max-width: 640px) {
  .hero-overline { margin-bottom: 1.6rem; }
  .hero-byline { display: none; }
  .hero-overline .research-index { font-size: 0.6rem; }
  [data-theme="research"] .research-heading { margin-bottom: 1.3rem; }
  [data-theme="research"] .research-heading h1 { font-size: 3.4rem; }
  [data-theme="research"] .hero-tagline { font-size: clamp(1.2rem, 4.6vw, 1.6rem); }
  [data-theme="research"] .research-intro > p { font-size: 0.9rem; }
  [data-theme="research"] .hero-links-line { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.5rem; }
  [data-theme="research"] .hero-link { justify-content: center; min-height: 2.75rem; padding: 0.65rem; font-size: 0.7rem; }
  [data-theme="research"] .hero-link:first-child { padding: 0.65rem; }
  [data-theme="research"] .research-showcase { height: 20rem; }
  [data-theme="research"] .research-showcase > .preview-video { object-position: 50% center; }
  [data-theme="research"] .showcase-top { inset: 1rem 1rem auto; }
  .showcase-top .video-label { font-size: 0.5rem; }
  .showcase-spec { gap: 0.15rem; }
  [data-theme="research"] .showcase-caption { inset: auto 1.1rem 1.2rem; display: block; }
  [data-theme="research"] .showcase-caption h2 { margin-top: 0.65rem; font-size: 1.65rem; }
  [data-theme="research"] .showcase-caption p { font-size: 0.73rem; line-height: 1.5; }
  .hero-watch { margin-top: 1rem; min-height: 2.65rem; padding: 0.65rem 0.85rem; }
  .hero-watch span { font-size: 0.7rem; }
  [data-theme="research"] .research-showcase .preview-toggle { right: 1rem; top: 3rem; }
  .hero-scene-strip { gap: 0.7rem; margin-top: 0.6rem; align-items: stretch; }
  .hero-scene-choice { flex-direction: column; align-items: stretch; gap: 0.55rem; }
  .hero-scene-choice img { width: 100%; height: auto; aspect-ratio: 16 / 9; }
  .hero-scene-choice small { font-size: 0.46rem; line-height: 1.4; }
  .hero-scene-choice strong { display: block; font-size: 0.65rem; }
  .hero-proof { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 1.8rem; padding: 0; }
  .hero-proof > div { padding: 1.2rem; gap: 0.5rem; }
  .hero-proof > div:first-child { padding-left: 0; }
  .hero-proof > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .hero-proof > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .hero-proof strong { font-size: 2.5rem; }
  .hero-proof > div > span { font-size: 0.57rem; }
  .hero-discover { font-size: 0.65rem; gap: 1rem; }
  [data-theme="research"] .section-heading { grid-template-columns: 1fr; gap: 1rem; }
  [data-theme="research"] .section-heading h2 { font-size: 2rem; }
  [data-theme="research"] .section-heading > p { margin: 0; justify-self: start; font-size: 0.84rem; }
  [data-theme="research"] .capability-showcase-media .capability-video-strip { gap: 0.6rem; }
  [data-theme="research"] .capability-video figcaption strong,
  [data-theme="research"] .capability-video figcaption small { display: none; }
  [data-theme="research"] .capability-video figcaption span { font-size: 0.5rem; line-height: 1.5; }
  [data-theme="research"] .capability-video-action { width: 1.5rem; height: 1.5rem; right: 0.3rem; bottom: 0.3rem; }
  [data-theme="research"] .capability-video-action .icon { width: 0.6rem; height: 0.6rem; }
  .project-resources { grid-template-columns: 1fr; gap: 2rem; padding: 1.7rem; margin-bottom: 2rem; }
  .project-resources h2 { font-size: 2.5rem; }
  .project-resources p { font-size: 0.8rem; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-scene-choice, .hero-scene-choice img, .hero-watch, .project-resource,
  [data-theme="research"] .hero-link { transition: none; }
}

/* Keep section introductions compact at every viewport and in both languages. */
.section-heading > p,
.combined-style-heading > p {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  max-height: 3.5em;
  overflow: hidden;
}

.combined-style-gallery {
  margin-top: clamp(2rem, 4vw, 3.5rem);
  padding: 0;
}
.gallery-filter-groups { display: grid; min-width: 0; gap: 0.75rem; }
.perspective-filters { flex-wrap: wrap; }
.gallery-empty {
  padding: 3rem 1rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}
.combined-style-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
}
.combined-style-heading h3 {
  font-family: var(--display);
  font-size: clamp(1.3rem, 2vw, 1.8rem);
  line-height: 1.25;
}
.combined-style-heading > p {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.75;
}
.interleaved-layout {
  display: grid;
  width: 100%;
  max-width: 74rem;
  margin-inline: auto;
  grid-template-columns: minmax(0, 2.2fr) minmax(0, 0.85fr);
  gap: clamp(1.5rem, 3vw, 2.75rem);
  align-items: start;
}
.interleaved-player { min-width: 0; }
.interleaved-player video {
  aspect-ratio: 1280 / 704;
  object-fit: contain;
  border-radius: 0.35rem;
  background: var(--media);
}
.showcase-top .video-summary,
.journey-screen-top .video-summary,
.longform-player figcaption > .video-summary {
  min-width: 0;
  font-family: var(--sans);
  font-size: 0.8rem;
  line-height: 1.5;
  letter-spacing: normal;
  text-transform: none;
}
.showcase-top .video-summary,
.journey-screen-top .video-summary {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}
.showcase-spec,
.journey-screen-top button,
.longform-player figcaption > .text-link { flex-shrink: 0; }
.interleaved-sequence { min-width: 0; max-height: 24rem; overflow-y: auto; scrollbar-width: none; }
.interleaved-sequence::-webkit-scrollbar { display: none; }
.interleaved-sequence:not([data-expanded]) { max-height: none; overflow-y: hidden; }
.interleaved-turn[hidden] { display: none; }
.interleaved-sequence-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
  font: 600 0.63rem var(--mono);
  letter-spacing: 0.065em;
}
.interleaved-sequence-heading small { color: var(--muted); font-size: 0.6rem; font-weight: 400; }
.interleaved-turns { display: grid; }
.interleaved-turn {
  position: relative;
  display: grid;
  grid-template-columns: 1.7rem minmax(0, 1fr);
  gap: 0.85rem;
  padding: 0.8rem 0;
  text-align: left;
  border: 0;
}
.interleaved-turn:not(:last-child)::after {
  position: absolute;
  top: 3.1rem;
  bottom: -0.7rem;
  left: 0.8rem;
  width: 1px;
  background: var(--line);
  content: "";
}
.interleaved-step-number {
  display: grid;
  place-items: center;
  width: 1.65rem;
  height: 1.65rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--muted);
  font: 0.57rem var(--mono);
}
.interleaved-turn[aria-pressed="true"] .interleaved-step-number {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--accent);
}
.interleaved-step-content { display: grid; min-width: 0; gap: 0.65rem; padding-top: 0.3rem; }
.interleaved-turn-label { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; }
.interleaved-turn-label .icon { width: 0.85rem; height: 0.85rem; color: var(--muted); }
.interleaved-turn-label strong { font: 600 0.65rem var(--mono); letter-spacing: 0.055em; }
.interleaved-turn[aria-pressed="true"] .interleaved-turn-label,
.interleaved-turn:hover .interleaved-turn-label { color: var(--signal); }
.interleaved-prompt { font-size: 0.95rem; line-height: 1.6; text-wrap: pretty; }
.interleaved-time { color: var(--muted); font: 0.6rem var(--mono); font-variant-numeric: tabular-nums; }
.interleaved-time > span { padding-inline: 0.25rem; color: var(--line-strong); }
.interleaved-keys { display: flex; flex-wrap: wrap; gap: 0.85rem; }
.interleaved-keys > span { display: grid; justify-items: start; gap: 0.45rem; }
.interleaved-keys small { color: var(--muted); font: 0.48rem/1.5 var(--mono); letter-spacing: 0.01em; }
.interleaved-keys kbd {
  display: grid;
  width: 1.85rem;
  height: 1.85rem;
  place-items: center;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 0.25rem;
  background: var(--surface);
  font: 0.75rem var(--mono);
}
.interleaved-sequence-hint {
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.67rem;
  line-height: 1.6;
}
.interleaved-keys .is-pressed kbd {
  border-color: var(--signal);
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--signal) 18%, transparent);
}
.interleaved-keys .is-pressed small {
  color: var(--signal);
  font-weight: 700;
}
.interleaved-case-heading {
  display: none;
  justify-content: space-between;
  gap: 1rem;
  margin: 1.8rem 0 1rem;
  color: var(--muted);
  font: 0.65rem/1.5 var(--mono);
  letter-spacing: 0.06em;
}
.interleaved-cases { display: grid; width: min(100%, 66rem); margin: 0.75rem auto 0; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 0.65rem; }
.interleaved-case-placeholder { display: grid; place-items: center; aspect-ratio: 16 / 9; border: 1px dashed var(--line-strong); border-radius: 0.3rem; color: var(--muted); font: 0.75rem var(--mono); }
.interleaved-case-pending { opacity: 0.65; }
@media (min-width: 641px) and (max-width: 1000px) {
  .interleaved-cases { max-width: 34rem; grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.interleaved-case { min-width: 0; text-align: left; padding: 0.2rem; border: 1px solid transparent; border-radius: 0.35rem; }
.interleaved-case-image { position: relative; display: block; overflow: hidden; border-radius: 0.3rem; background: var(--media); }
.interleaved-case-image::after { position: absolute; inset: 0; content: ""; background: linear-gradient(transparent 45%, #07100899); pointer-events: none; }
.interleaved-case-image img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; opacity: 0.8; transition: opacity 180ms, transform 250ms; }
.interleaved-case-index, .interleaved-case-duration { position: absolute; z-index: 1; color: white; font: 0.6rem var(--mono); }
.interleaved-case-index { top: 0.65rem; left: 0.65rem; padding: 0.3rem 0.4rem; border-radius: 0.2rem; background: #172019a6; }
.interleaved-case-duration { bottom: 0.7rem; left: 0.75rem; }
.interleaved-case-play { position: absolute; z-index: 1; right: 0.65rem; bottom: 0.6rem; display: grid; place-items: center; width: 1.9rem; height: 1.9rem; border-radius: 50%; background: var(--paper); color: var(--ink); }
.interleaved-case-play .icon { width: 0.8rem; height: 0.8rem; }
.interleaved-case-meta { display: block; padding: 0.4rem 0.15rem 0.15rem; }
.interleaved-case-meta small,
.interleaved-case-meta > .icon,
.interleaved-case-index,
.interleaved-case-play,
.interleaved-case-duration { display: none; }
.interleaved-case-meta strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.65rem; font-weight: 500; line-height: 1.45; }
.interleaved-case[aria-pressed="true"] { border-color: var(--signal); }
.interleaved-case[aria-pressed="true"] .interleaved-case-play { background: var(--accent); }
.interleaved-case:hover img, .interleaved-case[aria-pressed="true"] img { opacity: 1; }
.interleaved-case:hover img { transform: scale(1.025); }
@media (max-width: 640px) {
  .interleaved-cases { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.35rem; }
  .interleaved-case-meta strong { font-size: 0.55rem; }
  .interleaved-sequence { max-height: 16rem; }
}
@media (prefers-reduced-motion: reduce) {
  .interleaved-case-image img { transition: none; }
  .interleaved-case:hover img { transform: none; }
}
@media (max-width: 900px) {
  .interleaved-layout { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .combined-style-heading { grid-template-columns: 1fr; gap: 0.75rem; }
}

/* Shared scene title and summary beneath the three featured players. */
[data-theme] .longform-player {
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.longform-player > video {
  display: block;
  border-radius: 0.35rem;
  background: var(--media);
}

[data-theme] figure > figcaption.video-summary-caption {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  min-height: 0;
  padding: 1rem 0 1.15rem;
  border-bottom: 1px solid var(--line);
  background: transparent;
}

.video-summary-content {
  display: grid;
  min-width: 0;
  gap: 0.45rem;
}

[data-theme] .video-summary-caption .video-summary-content > strong {
  color: var(--ink);
  font: 620 1rem/1.35 var(--sans);
  letter-spacing: normal;
  text-transform: none;
}

[data-theme] .video-summary-caption .video-summary-content > span {
  max-width: none;
  color: var(--muted);
  font: 400 0.8rem/1.55 var(--sans);
  letter-spacing: normal;
  text-transform: none;
  overflow-wrap: anywhere;
}

.video-summary-caption > .text-link { flex-shrink: 0; }

.longform-stage { position: relative; }
.longform-stage > video {
  display: block;
  width: 100%;
  aspect-ratio: 1280 / 704;
  object-fit: contain;
  border-radius: 0.35rem;
  background: var(--media);
}
.longform-arrow {
  position: absolute;
  top: 50%;
  z-index: 2;
  width: 2.75rem;
  height: 2.75rem;
  transform: translateY(-50%);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--ink);
  background: var(--paper);
  box-shadow: 0 0.25rem 0.9rem #0002;
}
.longform-prev { left: -1.375rem; }
.longform-next { right: -1.375rem; }
.longform-prev .icon { transform: rotate(180deg); }
.longform-arrow:hover { background: var(--surface); border-color: var(--signal); }
.longform-arrow:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

/* Match the featured media to the unified text–camera player's dimensions. */
[data-theme] .journey-shell,
[data-theme] .longform-layout,
[data-theme] #world-memory .capability-showcase-media {
  width: 100%;
  max-width: 74rem;
  margin-inline: auto;
  gap: clamp(1.5rem, 3vw, 2.75rem);
}

[data-theme] .journey-screen {
  align-self: start;
  border: 0;
}

@media (min-width: 901px) {
  [data-theme] .journey-shell,
  [data-theme] #world-memory .capability-showcase-media {
    display: grid;
    grid-template-columns: minmax(0, 2.2fr) minmax(0, 0.85fr);
    align-items: start;
  }
  [data-theme] .longform-layout {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 2.2fr);
    align-items: start;
  }
  [data-theme] .longform-player { grid-column: 2; grid-row: 1; }
  [data-theme] .longform-rail { grid-column: 1; grid-row: 1; }
  [data-theme] .longform-rail .stats { grid-template-columns: 1fr; }
  [data-theme] .longform-rail .stat {
    align-items: start;
    min-height: 0;
    padding: 1rem 0;
    border: 0;
    border-bottom: 1px solid var(--line);
  }
  [data-theme] .longform-rail .stat:last-child { border-bottom: 0; }
  [data-theme] #world-memory .capability-video-strip {
    display: grid;
    width: 100%;
    grid-template-columns: 1fr;
    gap: 0.9rem;
    margin: 0;
    padding: 0;
    border: 0;
  }
  [data-theme] #world-memory .capability-video-frame video { aspect-ratio: 2.8; }
  [data-theme] #world-memory .capability-video figcaption {
    gap: 0.2rem;
    padding: 0.4rem 0;
  }
  [data-theme] #world-memory .capability-video figcaption strong {
    font-size: 0.7rem;
    line-height: 1.4;
  }
  [data-theme] .journey-panel { min-width: 0; min-height: 0; }
}

@media (max-width: 900px) {
  [data-theme] .journey-shell,
  [data-theme] .longform-layout,
  [data-theme] #world-memory .capability-showcase-media {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  [data-theme] figure > figcaption.video-summary-caption {
    flex-direction: column;
    gap: 0.75rem;
  }
}

/* Language cases share the unified control section's eight-thumbnail strip. */
.journey-player { min-width: 0; }
.journey-player .journey-screen { box-shadow: none; }
.journey-player .video-summary-caption > .icon-button { flex-shrink: 0; }
[data-theme] .journey-player > figcaption.video-summary-caption {
  flex-direction: row;
}

[data-theme] .journey-shell {
  row-gap: 0.9rem;
}

[data-theme] .journey-panel {
  align-self: stretch;
  min-width: 0;
  min-height: 0;
  height: auto;
  padding: 0;
  border: 0;
  background: transparent;
}

[data-theme] .journey-panel .journey-command {
  min-height: 0;
  margin-top: 0;
}

@media (min-width: 901px) {
  [data-theme] .journey-shell > .journey-panel {
    /* Match the 1280:704 video in the adjacent 2.2fr column, not its caption. */
    align-self: start;
    width: 100%;
    aspect-ratio: calc(1280 / 704 * 0.85 / 2.2);
    overflow: hidden;
  }
  [data-theme] .journey-panel .journey-command {
    overflow: hidden;
  }
}

.journey-shell > .journey-cases {
  grid-column: 1 / -1;
  margin-top: 0;
}

.journey-case[aria-pressed="true"] {
  background: color-mix(in srgb, var(--signal) 6%, var(--paper));
}

.journey-case[aria-pressed="true"] .interleaved-case-meta strong {
  color: var(--signal);
  font-weight: 650;
}

.journey-case:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .journey-shell > .journey-player { grid-row: 1; }
  .journey-shell > .journey-cases { grid-row: 2; }
  .journey-shell > .journey-panel { grid-row: 3; margin-top: 0.5rem; }
  [data-theme] .journey-panel .journey-command { height: 23rem; flex: none; }
  .journey-shell > .journey-cases { width: 100%; max-width: none; }
}

/* Keep specifications beside the carousel on desktop and below it on mobile. */
[data-theme] .longform-layout.longform-carousel-layout {
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
}
[data-theme] .longform-carousel-layout > .longform-player,
[data-theme] .longform-carousel-layout > .longform-rail {
  grid-column: 1;
  grid-row: auto;
  min-width: 0;
  width: 100%;
  margin-inline: auto;
}
[data-theme] .longform-carousel-layout .longform-rail .stats {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  height: auto;
}
[data-theme] .longform-carousel-layout .longform-rail .stat {
  min-height: 0;
  align-items: center;
  padding: 0.8rem 0.5rem;
  border: 0;
}
[data-theme] .longform-carousel-layout .longform-rail .stat + .stat {
  border-left: 1px solid var(--line);
}
[data-theme] .longform-carousel-layout .stat-value { font-size: clamp(1.5rem, 2.5vw, 2.2rem); }
[data-theme] .longform-carousel-layout .stat-label { text-align: center; }
@media (min-width: 901px) {
  [data-theme] .longform-layout.longform-carousel-layout {
    grid-template-columns: minmax(0, 2.2fr) minmax(0, 0.85fr);
    gap: clamp(1.5rem, 3vw, 2.75rem);
    align-items: start;
  }
  [data-theme] .longform-carousel-layout > .longform-player {
    grid-column: 1;
    grid-row: 1;
  }
  [data-theme] .longform-carousel-layout > .longform-rail {
    grid-column: 2;
    grid-row: 1;
    padding-inline: 1rem;
    border: 0;
  }
  [data-theme] .longform-carousel-layout .longform-rail .stats {
    grid-template-columns: 1fr;
    border-top: 1px solid var(--line);
  }
  [data-theme] .longform-carousel-layout .longform-rail .stat {
    align-items: start;
    padding: 1.15rem 0;
    border-bottom: 1px solid var(--line);
  }
  [data-theme] .longform-carousel-layout .longform-rail .stat + .stat {
    border-left: 0;
  }
  [data-theme] .longform-carousel-layout .stat-label {
    text-align: left;
  }
}
@media (max-width: 900px) {
  .longform-prev { left: 0.6rem; }
  .longform-next { right: 0.6rem; }
}

/* Primary entry to the live demo, with quieter research links beside it. */
[data-theme="research"] .hero-heading-with-resources > .hero-links-line.hero-primary-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.35rem;
}
[data-theme="research"] .hero-primary-actions .hero-demo-button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 3.3rem;
  padding: 0.85rem 1.25rem;
  border: 1px solid #172019;
  border-radius: 0.45rem;
  background: #172019;
  color: #fff;
  font: 650 clamp(1.125rem, 1.45vw, 1.375rem)/1.4 var(--sans);
  white-space: nowrap;
  text-decoration: none;
  box-shadow: 0 4px 12px rgb(23 32 25 / 12%);
  transition: background 180ms ease, transform 180ms ease;
}
.hero-primary-actions .hero-demo-button .icon { width: 1.2rem; height: 1.2rem; }
.hero-primary-actions .hero-demo-button:hover {
  background: #29352c;
  color: #fff;
  transform: translateY(-2px);
}
.hero-primary-actions .hero-demo-button:focus-visible {
  outline: 3px solid #3598cc;
  outline-offset: 4px;
}
.hero-secondary-links {
  display: grid;
  grid-template-columns: repeat(2, max-content);
  gap: 0.55rem 1rem;
}
[data-theme="research"] .hero-heading-with-resources .hero-secondary-links .hero-link {
  justify-content: flex-start;
  gap: 0.4rem;
  min-height: 0;
  padding: 0.15rem 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.7rem;
  box-shadow: none;
}
[data-theme="research"] .hero-secondary-links .hero-link:hover { color: var(--ink); }
[data-theme="research"] .hero-secondary-links .hero-link .hero-link-arrow { display: none; }
@media (max-width: 480px) {
  .hero-primary-actions .hero-demo-button { width: 100%; }
  .hero-secondary-links { width: 100%; gap: 0.5rem 1.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-primary-actions .hero-demo-button { transition: none; }
}
/* Keep the capability overview visible beside the identity, before the trailer. */
/* The Latin brand keeps the same typography in both language modes. */
[data-theme="research"] .research-heading #hero-title {
  font-family: var(--display);
  font-size: clamp(2.75rem, 6.2vw, 6rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.055em;
  white-space: nowrap;
}
[data-theme="research"] .research-heading.hero-heading-with-resources {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  column-gap: clamp(2rem, 4vw, 4rem);
  margin-bottom: clamp(2rem, 3.6vw, 3.25rem);
}
.hero-features {
  min-width: 0;
}
.hero-features > h2 {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font: 0.65rem/1.5 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.hero-feature-grid > li {
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 2;
  min-width: 0;
  border-top: 1px solid var(--line);
}
.hero-feature {
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 2;
  height: 100%;
  padding: 0.9rem 0;
  border-radius: 0.15rem;
  text-decoration: none;
  transition: background 180ms ease;
}
.hero-feature-heading {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.hero-feature-heading > .icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  color: #53752f;
}
.hero-feature-heading strong {
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 650;
  line-height: 1.45;
}
.hero-feature-heading > .hero-feature-arrow {
  width: 0.75rem;
  height: 0.75rem;
  margin-left: auto;
  color: var(--muted);
  transition: color 180ms ease, transform 180ms ease;
}
.hero-feature > p {
  margin: 0.45rem 0 0 1.55rem;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.65;
  text-wrap: balance;
}
.hero-feature:hover,
.hero-feature:focus-visible {
  background: var(--accent-soft);
}
.hero-feature:focus-visible {
  outline: 2px solid #53752f;
  outline-offset: 4px;
}
.hero-feature:hover .hero-feature-arrow,
.hero-feature:focus-visible .hero-feature-arrow {
  color: var(--ink);
  transform: translate(2px, -2px);
}
@media (min-width: 901px) and (max-width: 1200px) {
  [data-theme="research"] .hero-heading-with-resources > .hero-links-line {
    display: grid;
    grid-template-columns: repeat(2, max-content);
    gap: 0.4rem;
  }
  [data-theme="research"] .hero-heading-with-resources .hero-link {
    padding-inline: 0.65rem;
    gap: 0.4rem;
    font-size: 0.7rem;
  }
  [data-theme="research"] .hero-heading-with-resources .hero-link-arrow {
    display: none;
  }
}
@media (min-width: 1201px) {
  [data-theme="research"] .hero-heading-with-resources .hero-link {
    padding-inline: 0.7rem;
    gap: 0.4rem;
    font-size: 0.72rem;
  }
  [data-theme="research"] .hero-heading-with-resources .hero-link:not(:first-child) .hero-link-arrow {
    display: none;
  }
}
[data-theme="research"] .hero-heading-with-resources > .hero-links-line {
  min-height: 0;
  margin: 0;
}
@media (min-width: 901px) {
  [data-theme="research"] .hero-heading-with-resources {
    grid-template-areas: "identity features" "resources features";
    row-gap: 1.9rem;
  }
  [data-theme="research"] .hero-heading-with-resources > .hero-identity {
    grid-area: identity;
  }
  [data-theme="research"] .hero-heading-with-resources > .hero-links-line {
    grid-area: resources;
    align-items: flex-end;
  }
  [data-theme="research"] .hero-heading-with-resources > .hero-features {
    grid-area: features;
    align-self: center;
  }
}
@media (max-width: 900px) {
  [data-theme="research"] .research-heading.hero-heading-with-resources {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}
@media (max-width: 480px) {
  .hero-feature-grid { column-gap: 1rem; }
  .hero-feature-heading { gap: 0.4rem; }
  .hero-feature-heading strong { font-size: 0.78rem; }
  .hero-feature-heading > .hero-feature-arrow { display: none; }
  .hero-feature > p { margin-left: 0; font-size: 0.74rem; }
}
@media (max-width: 360px) {
  .hero-feature-grid { grid-template-columns: 1fr; }
  .hero-feature-heading > .hero-feature-arrow { display: block; }
  .hero-feature > p { margin-left: 1.4rem; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-feature, .hero-feature-arrow { transition: none; }
  .hero-feature:hover .hero-feature-arrow,
  .hero-feature:focus-visible .hero-feature-arrow { transform: none; }
}

/* Research typography: one reading family, a compact scale, and a brand-only
   display face. Keep this after component/mobile rules so both languages use
   the same hierarchy. The immersive page retains its cinematic typography. */
html[data-theme="research"] {
  --display: var(--sans);
  --display-zh: var(--sans);
  --mono: var(--sans);
  --font-code: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --type-micro: 0.75rem;
  --type-label: 0.8125rem;
  --type-small: 0.875rem;
  --type-body: 1rem;
  --type-lead: 1.0625rem;
  --type-title: clamp(3.25rem, 6.2vw, 6rem);
  --type-section: clamp(1.625rem, 2.5vw, 2.25rem);
  --type-card: clamp(1.125rem, 1.5vw, 1.375rem);
}

html[data-theme="research"] body {
  line-height: 1.65;
}

[data-theme="research"] .research-heading #hero-title {
  font-family: "Tencent Sans", var(--sans);
  font-size: var(--type-title);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

html[data-theme="research"] :is(
  .section-heading h2, .research-copy h2, .resources-intro h2,
  .combined-style-heading h2, .release-dialog h2
) {
  font-family: var(--sans);
  font-size: var(--type-section);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

html[data-theme="research"] :is(
  .architecture-caption h3, .architecture-dialog-top h2,
  .world-card-caption h3, .cap-card h3, .interleaved-copy h3,
  .combined-style-heading h3
) {
  font-family: var(--sans);
  font-size: var(--type-card);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.015em;
}

html[data-theme="research"] :is(
  .section-heading > p, .combined-style-heading > p,
  .research-intro > p, .research-copy > p, .architecture-caption p,
  #architecture-dialog-description, .interleaved-prompt
) {
  font-size: var(--type-body);
  line-height: 1.75;
}

/* Descriptive text is content, not a two-line teaser: allow reflow when
   translated, zoomed, or viewed on a narrow screen. */
html[data-theme="research"] :is(.section-heading > p, .combined-style-heading > p) {
  -webkit-line-clamp: unset;
  line-clamp: unset;
  max-height: none;
  overflow: visible;
}

html[data-theme="research"] :is(
  .hero-feature-heading strong, .longform-player figcaption strong,
  .capability-featured > figcaption strong
) {
  font-size: var(--type-body);
  font-weight: 600;
  line-height: 1.45;
}

html[data-theme="research"] :is(
  .hero-feature > p, .architecture-source, .interleaved-sequence-hint,
  .interleaved-copy > p, .world-card-caption p,
  .capability-featured > figcaption span
) {
  font-size: var(--type-small);
  line-height: 1.65;
}

[data-theme="research"] .hero-heading-with-resources .hero-secondary-links .hero-link {
  font-size: var(--type-small);
  font-weight: 500;
  line-height: 1.5;
}

html[data-theme="research"] :is(
  .navigation a, .language, .architecture-tabs button,
  .interleaved-case-meta strong, .capability-video figcaption strong,
  #world-memory .capability-video figcaption strong
) {
  font-size: var(--type-small);
  line-height: 1.5;
}

html[data-theme="research"] :is(
  .eyebrow, .hero-features > h2, .hero-overline .research-index,
  .hero-byline, .architecture-label, .architecture-image-meta,
  .stat-label, .interleaved-sequence-heading, .interleaved-turn-label strong
) {
  font-family: var(--sans);
  font-size: var(--type-label);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.035em;
}

html[data-theme="research"] :is(
  .language span, .architecture-tabs button > span,
  .interleaved-sequence-heading small, .interleaved-step-number,
  .interleaved-time, .interleaved-keys small,
  .interleaved-case-index, .interleaved-case-duration,
  .capability-video figcaption span, .capability-video figcaption small,
  .prompt-history-entry header, .journey-enter-key small
) {
  font-size: var(--type-micro);
  line-height: 1.5;
}

html[data-theme="research"] .journey-command :is(.prompt-history, .prompt-composer) {
  font-family: var(--sans);
  font-size: var(--type-small);
  line-height: 1.75;
}

html[data-theme="research"] .journey-command .prompt-console-bar {
  font-size: var(--type-micro);
  line-height: 1.5;
}

html[data-theme="research"] :is(kbd, code, pre) {
  font-family: var(--font-code);
}

html[data-theme="research"] :is(.stat-value, .interleaved-time, .world-duration) {
  font-variant-numeric: tabular-nums;
}

html[data-theme="research"] .longform-carousel-layout .stat-value {
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

/* Let larger labels wrap rather than squeeze or clip the surrounding UI. */
[data-theme="research"] .hero-overline {
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

[data-theme="research"] .interleaved-sequence-heading {
  flex-wrap: wrap;
}

[data-theme="research"] .architecture-image-meta {
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

@media (max-width: 480px) {
  [data-theme="research"] .hero-feature-grid {
    grid-template-columns: 1fr;
  }
  [data-theme="research"] .hero-feature > p {
    margin-left: 1.4rem;
    text-wrap: pretty;
  }
}

/* Keep capability titles on one line within the original hero width. */
[data-theme="research"] .hero-feature-grid {
  grid-template-columns: minmax(0, 1fr);
}
[data-theme="research"] .hero-feature-heading strong {
  white-space: nowrap;
}
@media (min-width: 1400px), (min-width: 750px) and (max-width: 900px) {
  [data-theme="research"] .hero-feature-grid {
    grid-template-columns: minmax(max-content, 0.9fr) minmax(max-content, 1.1fr);
    column-gap: 1rem;
  }
}
@media (max-width: 480px) {
  [data-theme="research"] .hero-feature-heading > .hero-feature-arrow { display: none; }
  [data-theme="research"] .hero-feature-heading { gap: 0.3rem; }
}

/* Capability links contain only their title now. */
[data-theme="research"] .hero-feature-grid > li,
[data-theme="research"] .hero-feature {
  grid-template-rows: auto;
  grid-row: auto;
}

/* Lower the capability overview beside the brand without changing its layout. */
@media (min-width: 901px) {
  [data-theme="research"] .hero-heading-with-resources > .hero-features {
    position: relative;
    top: 1rem;
  }
}

/* Three selected interleaved cases, with all four original turns available. */
#interleaved > .interleaved-cases { grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 36rem; }
#interleaved .interleaved-sequence { max-height: 30rem; overflow-y: auto; scrollbar-width: thin; }
#interleaved .interleaved-sequence::-webkit-scrollbar { display: block; width: 5px; }
#interleaved .interleaved-sequence::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 3px; }

/* The selected videos include their captions and controls in the image. */
#interleaved .interleaved-layout { grid-template-columns: minmax(0, 1fr); }

/* The fifth capability uses the full final row. */
[data-theme="research"] .hero-feature-grid > li:last-child { grid-column: 1 / -1; }

@media (min-width: 901px) {
  [data-theme="research"] .hero-heading-with-resources > .hero-identity,
  [data-theme="research"] .hero-heading-with-resources > .hero-features { align-self: start; }
}

/* Restore the direct Demo entry in the header. */
.header { grid-template-columns: auto minmax(0, 1fr) auto; }
.header-right { flex-shrink: 0; gap: 0.75rem; }
.header .header-cta { display: inline-flex; flex-shrink: 0; white-space: nowrap; background: #172019; border-color: #172019; color: #fff; }
.header .header-cta:hover { background: #29352c; }
.header .header-cta:focus-visible { outline: 3px solid #3598cc; outline-offset: 3px; }
@media (max-width: 1200px) { .header { grid-template-columns: 1fr auto; } }
@media (max-width: 600px) {
  .header-right { gap: 0.25rem; }
  .header .header-cta { padding-inline: 0.65rem; gap: 0.35rem; font-size: 0.75rem; }
  .header .header-cta .icon { display: none; }
}
@media (max-width: 360px) {
  .header .brand { font-size: 0.85rem; gap: 0.3rem; }
  .header .brand-mark { width: 1.3rem; height: 1.3rem; flex-basis: 1.3rem; }
  .header .header-cta { padding-inline: 0.5rem; }
}

@media (max-width: 600px) {
  .header { flex-wrap: nowrap; column-gap: 0.35rem; }
  .header .brand { font-size: 0.85rem; gap: 0.3rem; }
  .header .brand-mark { width: 1.3rem; height: 1.3rem; flex-basis: 1.3rem; }
  .header-right .language { min-width: 2rem; }
  .header-right .menu-toggle { width: 2rem; min-width: 2rem; }
}

@media (max-width: 360px) {
  .header { padding-inline: 0.75rem; }
  .header-right { gap: 0.15rem; }
}

@media (max-width: 600px) {
  .header-right .language { width: 1.75rem; min-width: 1.75rem; padding: 0; }
  .header-right .language span { display: none; }
  .header-right .menu-toggle { padding: 0; width: 1.75rem; min-width: 1.75rem; flex: 0 0 1.75rem; }
}

/* Final overlay clips keep their original aspect ratio and need no prompt panel. */
.overlay-showcase .world-visual > img,
.overlay-showcase .world-visual > video { object-fit: contain; transform: none; }
.overlay-showcase .world-visual::after { display: none; }
.overlay-showcase .world-card-caption h3 { overflow-wrap: anywhere; }
.video-dialog.overlay-only .case-workspace { grid-template-columns: minmax(0, 1fr); }
.video-dialog.overlay-only .case-prompts,
.video-dialog.overlay-only .case-specifications { display: none; }
#worlds .filters { flex-wrap: wrap; }

/* Three final overlay examples for multi-turn prompt control. */
[data-theme] #interaction .journey-shell { grid-template-columns: minmax(0, 1fr); }
#interaction .journey-player { grid-column: 1; grid-row: 1; }
#interaction .prompt-example-cases { grid-column: 1; grid-row: 2; width: min(100%, 36rem); grid-template-columns: repeat(3, minmax(0, 1fr)); margin-inline: auto; }