/* Hy-Nomas unified “worldline” design system. */

@font-face {
  font-family: "Tencent Sans";
  src: url("fonts/Tencent-W7CN.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 700;
}

/* 1. Design tokens */
:root {
  --paper: #f4f1e9;
  --surface: #fbfaf5;
  --surface-strong: #ffffff;
  --ink: #172019;
  --muted: #626b62;
  --line: #cdd1c6;
  --line-strong: #aeb6a9;
  --accent: #c9f26a;
  --accent-soft: #e7f1ce;
  --accent-ink: #17230f;
  --signal: #6d9139;
  --media: #182019;
  --gutter: clamp(1.5rem, 5.5vw, 5.5rem);
  --content: 90rem;
  --measure: 40rem;
  --header-height: 5.25rem;
  --radius: 0.3rem;
  --type-micro: 0.6875rem;
  --type-label: 0.75rem;
  --type-small: 0.8125rem;
  --type-body: 0.9375rem;
  --type-lead: 1.0625rem;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", "Courier New",
    monospace;
  --display: "Tencent Sans", Inter, ui-sans-serif, system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  color-scheme: light;
  font-family: var(--sans);
  font-synthesis: none;
}

[data-theme="immersive"] {
  --paper: #0b100d;
  --surface: #111813;
  --surface-strong: #172019;
  --ink: #f2f3eb;
  --muted: #a7afa3;
  --line: #354039;
  --line-strong: #59675c;
  --accent: #d7f58f;
  --accent-soft: #23301e;
  --accent-ink: #16210f;
  --signal: #c9ed78;
  --media: #070b08;
  color-scheme: dark;
}

/* 2. Reset and document defaults */
* {
  box-sizing: border-box;
}

html {
  max-width: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.5rem);
  overflow-x: clip;
}

body {
  min-width: 20rem;
  max-width: 100%;
  margin: 0;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.dialog-open {
  overflow: hidden;
}

button,
a,
input {
  -webkit-tap-highlight-color: transparent;
}

button,
a {
  touch-action: manipulation;
}

button {
  border: 0;
  padding: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
video {
  display: block;
  width: 100%;
  max-width: 100%;
  object-fit: cover;
}

figure,
h1,
h2,
h3,
p,
ol {
  margin: 0;
}

ol {
  padding: 0;
  list-style: none;
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

:where(a, button, video):focus-visible {
  outline: 0.16rem solid var(--signal);
  outline-offset: 0.22rem;
}

[data-theme="immersive"] :where(a, button, video):focus-visible {
  outline-color: var(--accent);
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  min-height: 2.75rem;
  padding: 0.75rem 1rem;
  transform: translateY(-200%);
  border: 1px solid var(--ink);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}

.skip-link:focus {
  transform: none;
}

.icon {
  width: 1.15rem;
  height: 1.15rem;
  flex: 0 0 1.15rem;
  vertical-align: middle;
}

.icon-button {
  display: inline-flex;
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 2.75rem;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 50%;
  transition: border-color 180ms ease, background 180ms ease,
    transform 180ms ease;
}

.icon-button:hover {
  border-color: var(--line-strong);
  background: color-mix(in srgb, var(--ink) 7%, transparent);
}

.eyebrow,
.hero-coordinate,
.world-category,
.gallery-count,
.world-number,
.world-duration,
.step-time,
.model-badge,
.architecture-index {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--muted);
  font-size: var(--type-label);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.status-dot {
  display: inline-block;
  width: 0.42rem;
  height: 0.42rem;
  flex: none;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0.22rem color-mix(in srgb, var(--signal) 14%, transparent);
}

/* 3. Shared header and controls */
.header {
  position: sticky;
  z-index: 50;
  top: 0;
  display: grid;
  grid-template-columns: auto minmax(24rem, 1fr) auto;
  min-height: var(--header-height);
  align-items: center;
  gap: clamp(2.5rem, 5vw, 5.5rem);
  max-width: 100rem;
  margin: 0 auto;
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: blur(1rem);
}

[data-theme="immersive"] .header {
  position: absolute;
  inset: 0 0 auto;
  max-width: none;
  border-color: #ffffff2e;
  background: linear-gradient(180deg, #071009d9, #07100900);
  color: #fff;
  backdrop-filter: none;
}

.header.scrolled {
  background: color-mix(in srgb, var(--paper) 96%, transparent);
  backdrop-filter: blur(1rem);
}

.header-identity,
.header-right,
.navigation,
.mode-switch {
  display: flex;
  align-items: center;
}

.header-identity {
  min-width: 0;
  gap: 1.4rem;
}

.brand {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.18rem;
  font-weight: 680;
  letter-spacing: -0.04em;
  white-space: nowrap;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  flex: 0 0 2rem;
}

.mode-switch {
  gap: 0.16rem;
  padding: 0.18rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
}

.mode-switch a {
  display: inline-flex;
  min-height: 2.35rem;
  align-items: center;
  gap: 0.45rem;
  padding: 0 0.78rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: var(--type-label);
  font-weight: 650;
  white-space: nowrap;
}

.mode-switch a span {
  font-family: var(--mono);
  font-size: var(--type-micro);
  opacity: 0.62;
}

.mode-switch a[aria-current="page"] {
  background: var(--ink);
  color: var(--paper);
}

[data-theme="immersive"] .mode-switch {
  border-color: #ffffff38;
  background: #0b120db8;
}

[data-theme="immersive"] .mode-switch a {
  color: #cbd2c8;
}

[data-theme="immersive"] .mode-switch a[aria-current="page"] {
  background: var(--accent);
  color: var(--accent-ink);
}

.navigation {
  justify-content: flex-start;
  gap: clamp(2rem, 3.6vw, 3.8rem);
  font-size: var(--type-small);
  white-space: nowrap;
}

.navigation a,
.language,
.header-cta {
  min-height: 2.75rem;
}

.navigation a {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.navigation a::after {
  position: absolute;
  right: 100%;
  bottom: 0.35rem;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  transition: right 180ms ease;
}

.navigation a:hover::after {
  right: 0;
}

.header-right {
  justify-content: flex-end;
  gap: 1.25rem;
}

.language {
  display: inline-flex;
  align-items: center;
  padding: 0 0.35rem;
  font-size: var(--type-small);
  font-weight: 700;
  white-space: nowrap;
}

.language span {
  margin-left: 0.3rem;
  font-family: var(--mono);
  font-size: var(--type-micro);
  opacity: 0.5;
}

.header-cta,
.text-link,
.cinema-watch {
  display: inline-flex;
  align-items: center;
}

.header-cta {
  gap: 0.65rem;
  padding: 0 1rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: var(--type-small);
  font-weight: 680;
}

[data-theme="immersive"] .header-cta {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.header-cta .icon,
.text-link .icon {
  width: 1rem;
  height: 1rem;
  flex-basis: 1rem;
}

.menu-toggle {
  display: none;
}

.button {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 0.8rem 1.15rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: var(--type-small);
  font-weight: 650;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-accent {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.button-accent:hover {
  background: color-mix(in srgb, var(--accent) 84%, white);
}

.text-link {
  min-height: 2.75rem;
  gap: 0.65rem;
  border-bottom: 1px solid var(--line-strong);
  font-size: var(--type-small);
  font-weight: 620;
}

.text-link:hover {
  border-color: var(--signal);
  color: var(--signal);
}

/* 4. Research hero */
.research-hero {
  max-width: var(--content);
  margin: 0 auto;
  padding: clamp(2.5rem, 4vw, 3.75rem) var(--gutter) 0;
}

.hero-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.hero-coordinate {
  color: var(--ink);
  font-size: var(--type-label);
  font-weight: 600;
  letter-spacing: 0.11em;
}

.research-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(16rem, 0.7fr);
  align-items: end;
  gap: clamp(2rem, 8vw, 8rem);
  margin: 0 0 clamp(2.2rem, 4vw, 3.8rem);
}

.research-heading h1 {
  font-size: clamp(4rem, 7.6vw, 7.25rem);
  font-weight: 580;
  line-height: 0.86;
  letter-spacing: -0.075em;
}

.title-asterisk {
  display: inline-block;
  margin-left: 0.12em;
  color: var(--signal);
  font-family: "DejaVu Sans", "Segoe UI Symbol", sans-serif;
  font-size: 0.42em;
  font-weight: 400;
  vertical-align: 0.7em;
}

.hero-tagline {
  margin-top: 1.35rem;
  font-family: var(--display);
  font-size: clamp(1.45rem, 2.4vw, 2.3rem);
  font-style: italic;
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.research-intro {
  padding-bottom: 0.3rem;
}

.research-index {
  display: block;
  margin-bottom: 0.9rem;
  color: var(--ink);
  font-family: var(--mono);
  font-size: var(--type-label);
  font-weight: 650;
  letter-spacing: 0.11em;
}

.research-intro > p {
  max-width: 27rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.15vw, var(--type-lead));
  line-height: 1.8;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.8rem;
  margin-top: 1.4rem;
}

.hero-links .text-link {
  flex-direction: row-reverse;
}

.research-showcase {
  position: relative;
  height: clamp(23rem, 40vw, 34rem);
  overflow: hidden;
  border: 1px solid #ffffff26;
  border-radius: 0.9rem;
  background: var(--media);
  color: #fff;
  isolation: isolate;
}

.research-showcase > .preview-video {
  position: absolute;
  inset: 0;
  height: 100%;
  object-position: center 51%;
}

.research-showcase::after {
  position: absolute;
  z-index: 0;
  inset: 0;
  background: linear-gradient(180deg, #050a076b 0%, transparent 35%, #071008d9 100%);
  content: "";
  pointer-events: none;
}

.showcase-top,
.showcase-caption,
.preview-toggle {
  position: absolute;
  z-index: 2;
}

.showcase-top {
  top: 1.4rem;
  right: 1.5rem;
  left: 1.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.video-label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--mono);
  font-size: var(--type-micro);
  letter-spacing: 0.1em;
}

.video-label > i {
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 50%;
  background: var(--accent);
}

.showcase-caption {
  right: clamp(1.4rem, 3vw, 2.8rem);
  bottom: clamp(1.4rem, 3vw, 2.8rem);
  left: clamp(1.4rem, 3vw, 2.8rem);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
}

.showcase-caption .eyebrow {
  color: #dfe6dc;
}

.showcase-caption h2 {
  margin-top: 0.8rem;
  font-size: clamp(1.8rem, 2.7vw, 2.7rem);
  font-weight: 450;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.showcase-caption p {
  max-width: 34rem;
  margin-top: 0.75rem;
  color: #d6ddd4;
  font-size: var(--type-body);
  line-height: 1.6;
}

.round-play {
  display: inline-flex;
  width: 4rem;
  height: 4rem;
  flex: 0 0 4rem;
  align-items: center;
  justify-content: center;
  border: 1px solid #ffffff9c;
  border-radius: 50%;
  background: #08100852;
  backdrop-filter: blur(0.7rem);
  transition: background 180ms ease, transform 180ms ease;
}

.round-play:hover {
  background: #ffffff26;
  transform: scale(1.04);
}

.round-play .icon {
  width: 1.35rem;
  height: 1.35rem;
  transform: translateX(0.08rem);
}

.preview-toggle {
  top: 3.4rem;
  right: 1rem;
  border-color: #ffffff55;
  background: #0610065c;
}

.showcase-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.6rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--type-small);
}

.showcase-foot a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 1rem;
  color: var(--ink);
  font-weight: 650;
}

.showcase-foot .icon {
  width: 1rem;
  height: 1rem;
}

/* 5. Immersive mosaic hero */
.cinema-hero {
  position: relative;
  min-height: 46rem;
  height: 100svh;
  max-height: 75rem;
  overflow: hidden;
  background: var(--media);
  color: #fff;
  isolation: isolate;
}

.mosaic-wall {
  position: absolute;
  z-index: 0;
  inset: 0;
  display: grid;
  grid-template: repeat(4, minmax(0, 1fr)) / repeat(4, minmax(0, 1fr));
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #0a100c;
  pointer-events: none;
}

.mosaic-tile {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: #131b15;
}

.mosaic-video {
  width: 100%;
  height: 100%;
  object-position: center;
  pointer-events: none;
}

.mosaic-shade {
  position: absolute;
  z-index: 1;
  inset: 0;
  background:
    radial-gradient(ellipse 48% 58% at 50% 49%, #08100bcc 0%, #08100b8a 50%, #08100b08 100%),
    linear-gradient(180deg, #050a07b8 0%, transparent 27%, transparent 70%, #080e0bde 100%);
  pointer-events: none;
}

.mosaic-hero-content {
  position: absolute;
  z-index: 2;
  top: calc(var(--header-height) + 2rem);
  right: var(--gutter);
  bottom: 6.5rem;
  left: var(--gutter);
  display: flex;
  max-width: calc(var(--content) - 2 * var(--gutter));
  margin: auto;
  flex-direction: column;
  pointer-events: none;
}

.mosaic-hero-content .hero-topline {
  color: #e7ebdf;
}

.mosaic-hero-content .hero-coordinate,
.mosaic-hero-content .eyebrow {
  color: #dce6d7;
  text-shadow: 0 1px 0.8rem #000;
}

.mosaic-hero-content .status-dot {
  background: var(--accent);
}

.cinema-copy {
  width: min(59rem, 82vw);
  margin: auto;
  text-align: center;
}

.mosaic-hero h1 {
  font-size: clamp(4rem, 7vw, 6.75rem);
  font-weight: 520;
  line-height: 0.96;
  letter-spacing: -0.068em;
  text-wrap: balance;
  text-shadow: 0 0.15rem 1.7rem #02070485;
}

.mosaic-hero h1 em {
  color: var(--accent);
  font-family: var(--display);
  font-weight: 400;
}

.cinema-copy > p {
  margin-top: 1.4rem;
  color: #e1e6de;
  font-size: var(--type-lead);
  line-height: 1.8;
  text-shadow: 0 0.1rem 0.7rem #000;
}

.cinema-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.4rem;
  margin-top: 2rem;
  pointer-events: auto;
}

.cinema-actions .button {
  border-radius: 999px;
  padding-inline: 1.4rem;
}

.cinema-watch {
  min-height: 2.75rem;
  gap: 0.7rem;
  color: #fff;
  font-size: var(--type-small);
  font-weight: 650;
}

.cinema-watch .icon {
  width: 2.4rem;
  height: 2.4rem;
  flex-basis: 2.4rem;
  padding: 0.68rem;
  border: 1px solid #ffffff80;
  border-radius: 50%;
}

.mosaic-bottom {
  position: absolute;
  z-index: 3;
  right: var(--gutter);
  bottom: max(1.5rem, env(safe-area-inset-bottom));
  left: var(--gutter);
  display: flex;
  max-width: calc(var(--content) - 2 * var(--gutter));
  margin: auto;
  align-items: center;
  gap: 1.25rem;
  color: #e3e9df;
  pointer-events: none;
}

.mosaic-scroll {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--mono);
  font-size: var(--type-micro);
  letter-spacing: 0.12em;
  pointer-events: auto;
}

.mosaic-scroll .icon {
  width: 0.95rem;
  height: 0.95rem;
}

.mosaic-count {
  margin-left: auto;
  color: #d6e3d1;
  font-size: var(--type-micro);
  letter-spacing: 0.12em;
}

.mosaic-controls {
  pointer-events: auto;
}

.mosaic-toggle {
  border-color: #ffffff6b;
  background: #07100873;
  backdrop-filter: blur(0.6rem);
}

/* 6. Shared content sections */
.section {
  max-width: var(--content);
  margin: 0 auto;
  padding: clamp(5rem, 9vw, 8.5rem) var(--gutter) 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: calc(var(--content) - 2 * var(--gutter));
  margin: clamp(2.5rem, 5vw, 4.5rem) auto 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stat {
  display: flex;
  min-width: 0;
  min-height: 8.5rem;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.7rem;
  border-left: 1px solid var(--line);
}

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

.stat-value {
  font-size: clamp(2.5rem, 4vw, 4rem);
  font-weight: 420;
  line-height: 1;
  letter-spacing: -0.055em;
}

.stat-value > span {
  color: var(--signal);
  font-size: 0.68em;
}

.stat-label {
  color: var(--muted);
  font-family: var(--mono);
  font-size: var(--type-label);
  letter-spacing: 0.04em;
  text-align: center;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(16rem, 0.65fr);
  align-items: end;
  gap: clamp(2rem, 8vw, 7rem);
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.section-heading h2,
.research-copy h2,
.resources-intro h2 {
  margin-top: 1.25rem;
  font-size: clamp(2.35rem, 4vw, 3.75rem);
  font-weight: 480;
  line-height: 1.02;
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.section-heading > p,
.research-copy > p,
.resources-intro > p {
  color: var(--muted);
  font-size: var(--type-body);
  line-height: 1.75;
}

/* Gallery */
.gallery-bar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.filter {
  min-height: 2.75rem;
  padding: 0.65rem 1rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  font-size: var(--type-label);
  font-weight: 620;
  transition: border-color 180ms ease, background 180ms ease,
    color 180ms ease;
}

.filter:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

.filter.active {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

[data-theme="immersive"] .filter.active {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.gallery-count {
  min-width: 4rem;
  padding-top: 1rem;
  color: var(--muted);
  font-size: var(--type-label);
  letter-spacing: 0.08em;
  text-align: right;
  white-space: nowrap;
}

.gallery-meta {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  color: var(--muted);
  font-size: var(--type-micro);
  line-height: 1.5;
  text-align: right;
}

.gallery-meta .gallery-count {
  padding-top: 0;
}

.gallery-marquee {
  --gallery-gap: clamp(1rem, 1.8vw, 1.75rem);
  display: grid;
  gap: clamp(2rem, 4vw, 3.5rem);
  margin-inline: calc(var(--gutter) * -1);
  overflow: hidden;
  padding: 0.4rem var(--gutter) 0.8rem;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}

.gallery-lane {
  min-width: 0;
  overflow: hidden;
}

.gallery-track,
.gallery-sequence {
  display: flex;
  width: max-content;
  gap: var(--gallery-gap);
}

.gallery-track {
  animation: gallery-forward 84s linear infinite;
  will-change: transform;
}

.gallery-lane-reverse .gallery-track {
  animation-name: gallery-reverse;
}

.gallery-marquee:hover .gallery-track,
.gallery-marquee:focus-within .gallery-track {
  animation-play-state: paused;
}

@keyframes gallery-forward {
  to {
    transform: translateX(calc(-50% - (var(--gallery-gap) / 2)));
  }
}

@keyframes gallery-reverse {
  from {
    transform: translateX(calc(-50% - (var(--gallery-gap) / 2)));
  }

  to {
    transform: translateX(0);
  }
}

.world-card {
  flex: 0 0 clamp(19rem, 29vw, 26rem);
  min-width: 0;
}

.world-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--media);
  color: #fff;
  text-align: left;
}

.world-visual::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #0002, transparent 42%, #050a06a8);
  content: "";
  pointer-events: none;
}

.world-visual > img,
.world-visual > video {
  height: 100%;
  object-fit: cover;
}

.world-visual > img {
  transition: transform 500ms ease, filter 500ms ease;
}

.world-visual > video {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  opacity: 0;
  transition: opacity 450ms ease;
  pointer-events: none;
}

.world-visual.preview-active > video {
  opacity: 1;
}

.world-visual:hover > img {
  transform: scale(1.025);
  filter: saturate(1.04);
}

.world-number,
.world-duration {
  position: absolute;
  z-index: 1;
  font-size: var(--type-micro);
  letter-spacing: 0.08em;
}

.world-number {
  top: 1rem;
  left: 1rem;
}

.world-duration {
  right: 1rem;
  bottom: 1rem;
}

.card-play {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: 50%;
  display: inline-flex;
  width: 3.25rem;
  height: 3.25rem;
  align-items: center;
  justify-content: center;
  transform: translate(-50%, -50%);
  border: 1px solid #ffffff8f;
  border-radius: 50%;
  background: #06100657;
  backdrop-filter: blur(0.5rem);
  transition: opacity 180ms ease, background 180ms ease, transform 180ms ease;
}

.world-visual.preview-active .card-play {
  opacity: 0;
}

.world-visual.preview-active:hover .card-play,
.world-visual.preview-active:focus-visible .card-play {
  opacity: 1;
}

.world-visual:hover .card-play {
  transform: translate(-50%, -50%) scale(1.06);
  background: #172818c7;
}

.card-play .icon {
  width: 1.1rem;
  height: 1.1rem;
}

.world-card-caption {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.2rem;
}

.world-card-caption > div {
  min-width: 0;
  flex: 1;
}

.world-category {
  display: block;
  margin-bottom: 0.6rem;
  color: var(--muted);
  font-size: var(--type-micro);
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.world-card-caption h3 {
  font-size: clamp(1.3rem, 1.7vw, 1.65rem);
  font-weight: 520;
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.world-card-caption p {
  display: -webkit-box;
  max-width: 38rem;
  margin-top: 0.55rem;
  overflow: hidden;
  color: var(--muted);
  font-size: var(--type-small);
  line-height: 1.7;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.card-arrow {
  margin-top: 1rem;
  border-color: var(--line);
}

.gallery-note {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.8rem;
  color: var(--muted);
  font-size: var(--type-small);
  line-height: 1.6;
}

.gallery-note .status-dot {
  width: 0.32rem;
  height: 0.32rem;
}

/* Recorded journeys */
.journey-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(19rem, 0.8fr);
  align-items: start;
  gap: clamp(0.85rem, 1.5vw, 1.35rem);
}

.journey-screen {
  position: relative;
  display: flex;
  min-width: 0;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--media);
}

.journey-screen > video {
  width: 100%;
  aspect-ratio: 1280 / 704;
  object-fit: contain;
}

.journey-screen-top {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  left: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: #fff;
  pointer-events: none;
}

.journey-screen-top > span {
  padding: 0.55rem 0.65rem;
  border: 1px solid #ffffff24;
  border-radius: 0.15rem;
  background: #0610068f;
  backdrop-filter: blur(0.5rem);
}

.journey-screen-top button {
  border-color: #ffffff52;
  background: #0610067a;
  pointer-events: auto;
}

.journey-panel {
  min-width: 0;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--surface);
}

.journey-command {
  position: relative;
  display: flex;
  min-height: 18rem;
  flex-direction: column;
  margin-top: 1.15rem;
  overflow: hidden;
  border: 1px solid #405047;
  border-radius: 0.4rem;
  background: #0b110d;
  color: #f2f5ef;
  transition: border-color 220ms ease, box-shadow 220ms ease;
}

.journey-command-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.prompt-console-bar {
  display: flex;
  min-height: 2.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  padding: 0 0.75rem;
  border-bottom: 1px solid #354139;
  color: #aab5aa;
  font: 0.625rem var(--mono);
  letter-spacing: 0.08em;
}

.prompt-console-bar > span,
.prompt-console-bar > div {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.prompt-console-bar i {
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0.65rem color-mix(in srgb, var(--accent) 75%, transparent);
}

.prompt-console-bar strong {
  color: var(--accent);
  font: inherit;
  white-space: nowrap;
}

.prompt-console-bar .icon-button {
  width: 1.8rem;
  height: 1.8rem;
  border-color: #ffffff26;
  color: #dce5dc;
}

.prompt-output {
  position: relative;
  min-height: 8.6rem;
  flex: 1;
  overflow: hidden;
  background: #111a14;
}

.prompt-output video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  filter: saturate(0.3) brightness(0.62);
  transition: opacity 600ms ease, filter 600ms ease;
}

[data-journey-command][data-phase="generating"] .prompt-output video {
  opacity: 0.46;
  filter: saturate(0.58) brightness(0.76);
}

[data-journey-command][data-phase="ready"] .prompt-output video {
  opacity: 0.95;
  filter: saturate(0.95) brightness(0.9);
}

.prompt-output::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #07100935, transparent 40%, #071009b5);
  content: '';
  pointer-events: none;
}

.prompt-output-label {
  position: absolute;
  z-index: 2;
  top: 0.65rem;
  left: 0.7rem;
  color: #dce5dc;
  font: 0.6rem var(--mono);
  letter-spacing: 0.07em;
}

.generation-scan {
  position: absolute;
  z-index: 2;
  right: 0;
  left: 0;
  height: 1px;
  opacity: 0;
  background: var(--accent);
  box-shadow: 0 0 1rem var(--accent);
}

[data-journey-command][data-phase="generating"] .generation-scan {
  opacity: 1;
  animation: generation-scan 1.3s ease-in-out infinite;
}

@keyframes generation-scan {
  from { top: 12%; }
  to { top: 88%; }
}

.generation-progress {
  position: absolute;
  z-index: 3;
  right: 0.7rem;
  bottom: 0.65rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  opacity: 0;
  color: #eef4eb;
  font: 0.6rem var(--mono);
  transition: opacity 180ms ease;
}

[data-journey-command][data-phase="generating"] .generation-progress {
  opacity: 1;
}

.generation-progress i {
  width: 2.8rem;
  height: 0.18rem;
  overflow: hidden;
  border-radius: 999px;
  background: #ffffff36;
}

.generation-progress i::after {
  display: block;
  width: 45%;
  height: 100%;
  transform: translateX(-110%);
  background: var(--accent);
  animation: generation-progress 1s ease-in-out infinite;
  content: '';
}

@keyframes generation-progress {
  to { transform: translateX(245%); }
}

.prompt-composer {
  display: flex;
  min-height: 4.35rem;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 0.75rem;
  border-top: 1px solid #354139;
  color: #f2f5ef;
  font-size: 0.72rem;
  line-height: 1.45;
}

.prompt-composer [data-command-text] {
  flex: 1;
}

.prompt-chevron {
  color: var(--accent);
  font-family: var(--mono);
}

.typing-cursor {
  display: inline-block;
  width: 1px;
  height: 1.05em;
  margin-left: 0.18rem;
  background: var(--signal);
  vertical-align: -0.12em;
  animation: cursor-blink 900ms steps(1, end) infinite;
}

.journey-command.is-typing .typing-cursor {
  width: 2px;
  box-shadow: 0 0 0.55rem color-mix(in srgb, var(--signal) 75%, transparent);
}

.journey-command-meta {
  padding: 0.5rem 0.75rem;
  border-top: 1px solid #354139;
  color: #8f9d91;
  font-size: var(--type-micro);
}

.journey-enter-key {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  color: var(--signal);
  text-align: right;
}

.journey-enter-key small {
  font: inherit;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.journey-enter-key kbd {
  display: grid;
  width: 1.75rem;
  height: 1.45rem;
  place-items: center;
  border: 1px solid #78905f;
  border-radius: 0.28rem;
  background: #172018;
  box-shadow: 0 2px 0 #32412e;
  font: 700 0.8rem/1 var(--mono);
  transform: translateY(-1px);
  transition: transform 100ms ease, background 100ms ease, box-shadow 100ms ease, color 100ms ease;
}

.journey-command.is-submitting {
  border-color: var(--accent);
  box-shadow: 0 0 1.6rem color-mix(in srgb, var(--accent) 18%, transparent);
}

.journey-command.is-submitting .typing-cursor {
  opacity: 0;
  animation: none;
}

.journey-command.is-submitting .journey-enter-key kbd {
  color: var(--paper);
  background: var(--signal);
  box-shadow: 0 0 0 color-mix(in srgb, var(--signal) 28%, var(--line));
  transform: translateY(1px) scale(0.96);
}

@keyframes cursor-blink {
  0%, 48% { opacity: 1; }
  49%, 100% { opacity: 0; }
}

.journey-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.journey-tabs button {
  min-height: 2.75rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  font-size: var(--type-small);
}

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

.journey-tabs button.active {
  background: var(--ink);
  color: var(--paper);
}

[data-theme="immersive"] .journey-tabs button.active {
  background: var(--accent);
  color: var(--accent-ink);
}

.journey-panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 1.25rem 0 0.75rem;
  color: var(--muted);
}

.journey-step {
  display: flex;
  width: 100%;
  min-height: 3.25rem;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.75rem;
  border-left: 2px solid transparent;
  text-align: left;
  transition: border-color 180ms ease, background 180ms ease;
}

.journey-step:hover {
  background: color-mix(in srgb, var(--ink) 5%, transparent);
}

.journey-step.active {
  border-color: var(--signal);
  background: color-mix(in srgb, var(--signal) 10%, transparent);
}

.step-time {
  padding-top: 0.15rem;
  color: var(--muted);
  font-size: var(--type-micro);
}

.step-copy {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
  gap: 0.38rem;
}

.step-copy strong {
  font-size: var(--type-small);
  font-weight: 650;
  line-height: 1.4;
}

.step-copy > span {
  display: none;
  color: var(--muted);
  font-size: var(--type-label);
  line-height: 1.6;
}

.journey-step.active .step-copy > span {
  display: block;
}

.step-dot {
  width: 0.42rem;
  height: 0.42rem;
  flex: none;
  margin-top: 0.2rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.journey-step.active .step-dot {
  border-color: var(--signal);
  background: var(--signal);
}

.journey-note {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--type-label);
  line-height: 1.65;
}

/* Capability cards */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.cap-card {
  min-width: 0;
  padding: 2rem clamp(1.4rem, 2.6vw, 2.6rem) 2.4rem;
  border-right: 1px solid var(--line);
}

.cap-card:first-child {
  padding-left: 0;
}

.cap-card:last-child {
  padding-right: 0;
  border-right: 0;
}

.cap-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
}

.cap-top > span {
  font-family: var(--mono);
  font-size: var(--type-label);
}

.cap-art {
  position: relative;
  display: flex;
  height: 13.5rem;
  align-items: center;
  justify-content: center;
  margin: 0.8rem 0 1.8rem;
  overflow: hidden;
}

.cap-card > .eyebrow {
  color: var(--signal);
  font-size: var(--type-micro);
}

.cap-card h3 {
  margin-top: 0.9rem;
  font-size: clamp(1.4rem, 1.8vw, 1.7rem);
  font-weight: 520;
  line-height: 1.18;
  letter-spacing: -0.035em;
}

.cap-card > p {
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: var(--type-body);
  line-height: 1.8;
}

/* Draft mode: one continuous generate-review-rollback-regenerate story. */
.draft-section {
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--accent) 5%, var(--paper));
}

.draft-experience {
  display: grid;
  grid-template-columns: minmax(0, 2.25fr) minmax(17rem, 0.75fr);
  align-items: stretch;
  gap: clamp(1.2rem, 2.8vw, 2.8rem);
  margin-inline: auto;
}

.draft-stage {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border: 1px solid #405047;
  border-radius: 0.9rem;
  background: var(--media);
  color: #f6f8f2;
}

.draft-stage video {
  width: 100%;
  height: 100%;
  min-height: clamp(24rem, 38vw, 32rem);
  object-fit: cover;
  filter: saturate(0.92) brightness(0.88);
}

.draft-stage::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #0710097a, transparent 24%, transparent 67%, #071009d9);
  content: "";
  pointer-events: none;
}

.draft-stage-top,
.draft-stage-bottom {
  position: absolute;
  z-index: 3;
  right: 1rem;
  left: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.draft-stage-top {
  top: 1rem;
}

.draft-stage-top span {
  padding: 0.45rem 0.6rem;
  border: 1px solid #ffffff42;
  border-radius: 999px;
  background: #08100bc2;
  font: 0.62rem var(--mono);
  letter-spacing: 0.07em;
}

.draft-stage-top [data-draft-rate] {
  color: var(--accent);
}

.draft-stage-bottom {
  bottom: 1rem;
}

.draft-clock {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  font-family: var(--mono);
}

.draft-clock strong {
  font-size: 1.35rem;
}

.draft-clock span {
  color: #c5ccc3;
  font-size: var(--type-label);
}

.draft-stage-bottom .icon-button {
  border-color: #ffffff42;
  background: #08100bc2;
}

.draft-decision {
  position: absolute;
  z-index: 4;
  top: 50%;
  left: 50%;
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.2rem 1.5rem;
  border: 1px solid #ffffff4f;
  border-radius: 0.75rem;
  opacity: 0;
  background: #08100be8;
  box-shadow: 0 1rem 3rem #0008;
  color: #fff;
  text-align: center;
  transform: translate(-50%, -42%) scale(0.96);
  transition: opacity 220ms ease, transform 220ms ease;
  pointer-events: none;
}

.draft-decision > span {
  display: grid;
  width: 2.8rem;
  height: 2.8rem;
  place-items: center;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
}

.draft-decision strong {
  font: 650 var(--type-small) var(--mono);
  letter-spacing: 0.06em;
}

.draft-decision small {
  color: #cbd2c8;
  font-size: var(--type-small);
}

.draft-experience[data-phase="review"] .draft-decision,
.draft-experience[data-phase="rollback"] .draft-decision,
.draft-experience[data-phase="kept"] .draft-decision {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.draft-experience[data-phase="rollback"] .draft-decision > span .icon {
  transform: rotate(180deg);
  animation: draft-rewind 700ms ease-in-out infinite alternate;
}

.draft-experience[data-phase="kept"] .draft-decision > span .icon {
  transform: none;
}

.draft-workflow {
  min-width: 0;
  padding: 1rem 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}

.draft-direction {
  min-height: 4.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--type-small);
  line-height: 1.65;
}

.draft-workflow ol {
  margin-top: 0.4rem;
}

.draft-workflow li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  opacity: 0.42;
  transition: opacity 180ms ease, transform 180ms ease;
}

.draft-workflow li:last-child {
  border-bottom: 0;
}

.draft-workflow li.active {
  opacity: 1;
  transform: translateX(0.3rem);
}

.draft-workflow li.done {
  opacity: 0.72;
}

.draft-workflow li.rejected strong {
  color: #a85f43;
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}

.draft-workflow li > span {
  display: grid;
  width: 1.75rem;
  height: 1.75rem;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--muted);
  font: 0.6rem var(--mono);
}

.draft-workflow li.active > span,
.draft-workflow li[data-draft-step="kept"].active > span {
  border-color: var(--signal);
  background: var(--signal);
  color: var(--paper);
}

.draft-workflow li > div {
  min-width: 0;
}

.draft-workflow strong,
.draft-workflow small {
  display: block;
}

.draft-workflow strong {
  font-size: var(--type-body);
  font-weight: 650;
}

.draft-workflow small {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: var(--type-label);
  line-height: 1.4;
}

.draft-timeline {
  grid-column: 1 / -1;
}

.draft-track {
  position: relative;
  height: 0.5rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--line);
}

.draft-track-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--draft-progress, 0%);
  background: var(--signal);
  transition: width 120ms linear, background 180ms ease;
}

.draft-experience[data-phase="draft-a"] .draft-track-fill,
.draft-experience[data-phase="review"] .draft-track-fill {
  background: #c7774f;
}

.draft-experience[data-phase="rollback"] .draft-track-fill {
  width: 82.22%;
  transition: width 1.25s cubic-bezier(.6,0,.3,1);
}

.draft-experience[data-phase="draft-b"] .draft-track-fill,
.draft-experience[data-phase="kept"] .draft-track-fill {
  background: var(--signal);
}

.draft-branch-point {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 82.22%;
  width: 0.8rem;
  height: 0.8rem;
  border: 0.16rem solid var(--paper);
  border-radius: 50%;
  background: var(--ink);
  transform: translate(-50%, -50%);
}

.draft-time-labels {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  margin-top: 0.55rem;
  color: var(--muted);
  font: 0.62rem var(--mono);
}

.draft-time-labels strong {
  color: var(--ink);
  font-weight: 650;
}

.draft-time-labels span:last-child {
  text-align: right;
}

.draft-record {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: var(--type-small);
  text-align: center;
}

.draft-record i {
  width: 0.4rem;
  height: 0.4rem;
  flex: none;
  border-radius: 50%;
  background: var(--signal);
}

@keyframes draft-rewind {
  from { transform: rotate(180deg) translateX(0); }
  to { transform: rotate(180deg) translateX(0.25rem); }
}

.camera-control-art {
  display: flex;
  width: 100%;
  height: clamp(23rem, 36vw, 31rem);
  flex-direction: column;
  overflow: hidden;
  border: 1px solid #405047;
  border-radius: 0.9rem;
  background: #0b110d;
  color: #f2f5ef;
}

.control-viewport {
  position: relative;
  width: 100%;
  min-height: 0;
  flex: 1;
  overflow: hidden;
  background: #111a14;
}

.control-viewport video {
  width: 100%;
  height: 100%;
  opacity: 0.82;
  filter: saturate(0.8) brightness(0.72);
  transform: scale(1.05);
  transition: transform 850ms cubic-bezier(.2,.75,.25,1), filter 300ms ease;
}

[data-wasd-demo][data-active-key="W"] .control-viewport video { transform: scale(1.13) translateY(1.5%); }
[data-wasd-demo][data-active-key="S"] .control-viewport video { transform: scale(1.03) translateY(-1%); }
[data-wasd-demo][data-active-key="A"] .control-viewport video { transform: scale(1.08) translateX(2.5%); }
[data-wasd-demo][data-active-key="D"] .control-viewport video { transform: scale(1.08) translateX(-2.5%); }
[data-wasd-demo][data-active-key="ArrowUp"] .control-viewport video { transform: scale(1.09) translateY(2%) rotateX(-1.2deg); }
[data-wasd-demo][data-active-key="ArrowDown"] .control-viewport video { transform: scale(1.09) translateY(-2%) rotateX(1.2deg); }
[data-wasd-demo][data-active-key="ArrowLeft"] .control-viewport video { transform: scale(1.09) translateX(2%) rotate(0.6deg); }
[data-wasd-demo][data-active-key="ArrowRight"] .control-viewport video { transform: scale(1.09) translateX(-2%) rotate(-0.6deg); }

.control-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(#d7f58f14 1px, transparent 1px), linear-gradient(90deg, #d7f58f14 1px, transparent 1px);
  background-size: 1.4rem 1.4rem;
  box-shadow: inset 0 -3rem 4rem #071009c9;
}

.control-live {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.control-deck {
  display: flex;
  width: 100%;
  min-height: 5.5rem;
  align-items: center;
  gap: 0.8rem;
  padding: 0.45rem 0.7rem;
  border-top: 1px solid #354139;
}

.mini-keyboard {
  display: flex;
  width: 4.2rem;
  flex: none;
  align-items: center;
  flex-direction: column;
  gap: 0.16rem;
}

.mini-keyboard > div {
  display: flex;
  gap: 0.16rem;
}

.mini-keyboard kbd {
  display: inline-flex;
  width: 1.22rem;
  height: 1.22rem;
  align-items: center;
  justify-content: center;
  border: 1px solid #657268;
  border-bottom-width: 0.14rem;
  border-radius: 0.16rem;
  background: #151d18;
  color: #bec8bd;
  font: 0.58rem var(--mono);
  transition: color 120ms ease, background 120ms ease, box-shadow 120ms ease, transform 120ms ease;
}

.mini-keyboard kbd.active {
  transform: translateY(0.08rem);
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0.8rem color-mix(in srgb, var(--accent) 55%, transparent);
}

.control-readout {
  display: grid;
  min-width: 0;
  flex: 1;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 0.2rem 0.65rem;
}

.control-readout strong {
  color: var(--accent);
  font: 0.72rem var(--mono);
}

.control-readout span {
  font-size: 0.72rem;
}

.control-readout small {
  grid-column: 1 / -1;
  color: #98a399;
  font-size: 0.6rem;
}

.camera-feature {
  display: grid;
  max-width: 72rem;
  grid-template-columns: minmax(0, 3fr) minmax(12rem, 0.8fr);
  align-items: stretch;
  gap: clamp(1.5rem, 3vw, 2.8rem);
  margin-inline: auto;
}

.editorial-feature {
  width: min(92%, 72rem);
}

.feature-rail,
.longform-rail {
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
}

.feature-rail {
  display: flex;
  min-width: 0;
  padding: 1rem 0 1.2rem;
  flex-direction: column;
  gap: 0;
}

.rail-index {
  color: var(--muted);
  font: var(--type-micro) var(--mono);
  letter-spacing: 0.08em;
}

.feature-rail > div {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.feature-rail > div:first-of-type {
  margin-top: 1.15rem;
}

.rail-keyboard-panel {
  display: flex;
  min-height: 14rem;
  flex: 1;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.1rem;
}

.rail-control-label {
  align-self: flex-start;
  color: var(--muted);
  font: var(--type-micro) var(--mono);
  letter-spacing: 0.06em;
}

.camera-keyboard-groups {
  display: grid;
  width: 100%;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.key-group {
  display: flex;
  min-width: 0;
  align-items: center;
  flex-direction: column;
  gap: 0.65rem;
  padding: 0.8rem 0.35rem;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  background: color-mix(in srgb, var(--ink) 2.5%, transparent);
}

.key-group > small {
  color: var(--muted);
  font: 0.58rem var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rail-keyboard-panel .mini-keyboard {
  width: 5.2rem;
  transform-origin: center;
}

.rail-keyboard-panel .control-readout {
  width: 100%;
  flex: none;
  grid-template-columns: auto 1fr;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
}

.rail-trajectory-input {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.rail-trajectory-input .icon {
  width: 1.4rem;
  height: 1.4rem;
  flex: none;
  color: var(--signal);
}

.rail-trajectory-input > span {
  min-width: 0;
}

.feature-rail strong {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--signal);
  font: 600 var(--type-body) var(--mono);
}

.feature-rail p {
  color: var(--muted);
  font-size: var(--type-label);
  line-height: 1.55;
}

.rail-status {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding-top: 1rem;
  color: var(--muted);
  font-size: var(--type-micro);
  line-height: 1.45;
}

.rail-status i {
  width: 0.35rem;
  height: 0.35rem;
  flex: none;
  border-radius: 50%;
  background: var(--signal);
}

.camera-feature .mini-keyboard {
  width: 6rem;
}

.camera-feature .mini-keyboard kbd {
  width: 1.65rem;
  height: 1.65rem;
  font-size: 0.68rem;
}

.camera-feature .control-readout strong,
.camera-feature .control-readout span {
  font-size: var(--type-body);
}

.trajectory-chip {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.55rem;
  margin-left: auto;
  padding: 0.55rem 0.8rem;
  border: 1px solid #536158;
  border-radius: 999px;
  color: #c3cec2;
  font-size: var(--type-label);
}

.trajectory-chip .icon {
  color: var(--accent);
}

.longform-player {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--media);
}

.longform-layout {
  display: grid;
  width: min(92%, 72rem);
  grid-template-columns: minmax(15rem, 0.72fr) minmax(0, 2.35fr);
  align-items: start;
  gap: clamp(1.5rem, 3vw, 2.8rem);
  margin-inline: auto;
}

.longform-rail {
  padding-top: 1rem;
}

.longform-rail .stats {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 1.4rem 0 0;
  border-bottom: 0;
}

.longform-rail .stat {
  min-height: 7.5rem;
  padding-inline: 0.4rem;
  border-bottom: 1px solid var(--line);
}

.longform-rail .stat:nth-child(odd) {
  border-left: 0;
}

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

.longform-rail .stat-value {
  font-size: clamp(2rem, 3vw, 3rem);
}

.longform-rail .stat-label {
  font-size: var(--type-micro);
}

.longform-player video {
  width: 100%;
  max-height: 44rem;
  aspect-ratio: 1280 / 704;
  object-fit: contain;
}

.longform-player figcaption {
  display: flex;
  min-height: 4.2rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 1.2rem;
  background: var(--paper);
}

.longform-player figcaption > span {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--muted);
  font: var(--type-label) var(--mono);
  letter-spacing: 0.05em;
}


.film-art {
  flex-direction: column;
  gap: 1rem;
}

.filmstrip {
  display: flex;
  width: 108%;
  align-items: center;
  gap: 0.3rem;
  transform: rotate(-5deg);
}

.filmstrip img {
  width: 26%;
  aspect-ratio: 0.82;
  border: 0.18rem solid var(--surface-strong);
  border-radius: 0.2rem;
}

.film-timeline {
  display: flex;
  width: 85%;
  align-items: center;
  gap: 0.55rem;
  color: var(--muted);
  font: 0.54rem var(--mono);
}

.film-timeline i {
  position: relative;
  height: 1px;
  flex: 1;
  background: var(--line-strong);
}

.film-timeline i::before {
  position: absolute;
  top: -0.16rem;
  left: 32%;
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--signal);
  content: "";
}

/* Research architecture */
.research-section {
  display: grid;
  grid-template-columns: minmax(16rem, 0.66fr) minmax(0, 1.34fr);
  align-items: start;
  gap: clamp(3rem, 7vw, 7rem);
  padding-top: clamp(6rem, 11vw, 10rem);
  padding-bottom: clamp(5.5rem, 10vw, 9rem);
}

.research-copy {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
}

.research-copy h2 {
  max-width: 32rem;
}

.research-copy > p {
  max-width: 29rem;
  margin-top: 1.5rem;
}

.research-copy > .text-link {
  margin-top: 1.75rem;
}

.research-specs {
  display: grid;
  grid-template-columns: 1.35fr repeat(3, 1fr);
  max-width: 34rem;
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.research-specs > strong,
.research-specs > span {
  display: flex;
  min-height: 4.4rem;
  justify-content: center;
  flex-direction: column;
  padding: 0.8rem;
  border-right: 1px solid var(--line);
}

.research-specs > strong {
  color: var(--muted);
  font: 0.62rem/1.3 var(--mono);
  letter-spacing: 0.06em;
}

.research-specs > span:last-child {
  border-right: 0;
}

.research-specs b {
  font: 600 1.05rem/1 var(--sans);
  letter-spacing: -0.03em;
}

.research-specs small {
  margin-top: 0.35rem;
  color: var(--muted);
  font: 0.52rem/1 var(--mono);
}

.research-system {
  width: 100%;
  max-width: 64rem;
  justify-self: end;
  border: 1px solid var(--line-strong);
  border-radius: 0.65rem;
  overflow: hidden;
  background: color-mix(in srgb, var(--surface) 94%, var(--signal));
}

.research-system > figcaption {
  display: flex;
  min-height: 3.25rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font: 0.57rem/1 var(--mono);
  letter-spacing: 0.08em;
}

.research-system > figcaption strong {
  color: var(--ink);
  font-weight: 520;
}

.research-flow {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) 1.2rem minmax(0, 1fr) 1.2rem minmax(0, 1.08fr) 1.2rem minmax(0, 1fr);
  align-items: stretch;
  padding: 1rem;
}

.research-node {
  position: relative;
  display: flex;
  min-height: 12.5rem;
  min-width: 0;
  justify-content: flex-end;
  flex-direction: column;
  gap: 1rem;
  padding: 2.5rem 1rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: var(--surface);
}

.research-node > span:first-child {
  position: absolute;
  top: 0.8rem;
  left: 0.85rem;
  color: var(--muted);
  font: 0.56rem var(--mono);
}

.research-node .icon,
.research-node .brand-mark {
  width: 2rem;
  height: 2rem;
  color: var(--signal);
}

.research-node em {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--signal) 50%, var(--line));
  border-radius: 50%;
  color: var(--signal);
  font: 0.62rem var(--mono);
  font-style: normal;
}

.research-node > div:last-child {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.research-node strong {
  font-size: 0.7rem;
  font-weight: 620;
  letter-spacing: 0.055em;
}

.research-node small {
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.45;
}

.research-node-director {
  background: color-mix(in srgb, var(--signal) 6%, var(--surface));
}

.research-node-model {
  border-color: color-mix(in srgb, var(--signal) 45%, var(--line));
  background: color-mix(in srgb, var(--signal) 13%, var(--surface));
}

.research-arrow {
  display: grid;
  place-items: center;
  color: var(--signal);
  font: 300 1.05rem var(--sans);
  font-style: normal;
}

.research-node-output {
  justify-content: space-between;
}

.research-output-strip {
  display: grid !important;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.18rem !important;
}

.research-output-strip img {
  width: 100%;
  aspect-ratio: 0.78;
  border-radius: 0.18rem;
  object-fit: cover;
}

.research-memory {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.8rem;
  padding: 0 1rem 1rem;
  color: var(--signal);
  font: 0.57rem var(--mono);
  letter-spacing: 0.07em;
  text-align: center;
}

.research-memory span {
  position: relative;
  height: 1px;
  background: color-mix(in srgb, var(--signal) 55%, transparent);
}

.research-memory span:first-child::before,
.research-memory span:last-child::after {
  position: absolute;
  top: -0.2rem;
  color: var(--signal);
  content: "‹";
}

.research-memory span:first-child::before {
  left: 0;
}

.research-memory span:last-child::after {
  right: 0;
  content: "›";
}

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

.research-explorer-heading {
  display: flex;
  min-height: 3rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  color: var(--muted);
  font: 0.57rem var(--mono);
  letter-spacing: 0.07em;
}

.research-explorer-heading small {
  font-size: 0.5rem;
}

.research-principles {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.research-principles button {
  position: relative;
  display: flex;
  min-height: 4.2rem;
  align-items: center;
  gap: 0.65rem;
  padding: 0.9rem;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  font: 0.62rem/1.4 var(--mono);
  text-align: left;
  transition: background 180ms ease, color 180ms ease;
}

.research-principles button:last-child {
  border-right: 0;
}

.research-principles button > span {
  color: color-mix(in srgb, var(--muted) 70%, transparent);
  font-size: 0.52rem;
}

.research-principles button::after {
  position: absolute;
  right: 0.8rem;
  bottom: 0.45rem;
  left: 0.8rem;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--signal);
  content: "";
  transition: transform 180ms ease;
}

.research-principles button:hover,
.research-principles button[aria-selected="true"] {
  background: color-mix(in srgb, var(--signal) 9%, transparent);
  color: var(--ink);
}

.research-principles button[aria-selected="true"]::after {
  transform: scaleX(1);
}

.research-principles button:focus-visible {
  z-index: 1;
  outline: 2px solid var(--signal);
  outline-offset: -2px;
}

.research-panels {
  background: color-mix(in srgb, var(--ink) 1.5%, var(--surface));
}

.research-panel {
  display: grid;
  min-height: 22rem;
  grid-template-columns: minmax(12rem, 0.68fr) minmax(18rem, 1.32fr);
  gap: 1.5rem;
  align-items: center;
  padding: clamp(1.2rem, 3vw, 2rem);
}

.research-panel[hidden] {
  display: none;
}

.research-panel.active {
  animation: researchPanelIn 260ms ease both;
}

.research-panel-copy > span {
  color: var(--signal);
  font: 0.55rem var(--mono);
  letter-spacing: 0.08em;
}

.research-panel-copy h3 {
  max-width: 18rem;
  margin-top: 0.75rem;
  font-size: clamp(1.2rem, 2vw, 1.75rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.research-panel-copy p {
  max-width: 20rem;
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.6;
}

.mask-demo {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: var(--surface);
}

.mask-key-axis {
  margin-left: 6.3rem;
  color: var(--muted);
  font: 0.5rem var(--mono);
  letter-spacing: 0.07em;
  text-align: center;
}

.mask-column-groups {
  display: grid;
  grid-template-columns: 5fr 5fr 4fr 4fr;
  margin: 0.55rem 0 0 6.3rem;
}

.mask-column-groups span {
  padding: 0.35rem 0;
  border-right: 1px solid var(--line-strong);
  color: var(--ink);
  font: 0.45rem var(--mono);
  text-align: center;
}

.mask-column-groups span:nth-child(-n+2) {
  background: color-mix(in srgb, #4c78a8 10%, var(--surface));
}

.mask-column-groups span:nth-child(n+3) {
  background: color-mix(in srgb, #e15759 10%, var(--surface));
}

.mask-columns {
  display: grid;
  grid-template-columns: repeat(18, minmax(0, 1fr));
  align-items: center;
  margin-left: 6.3rem;
  color: var(--muted);
  font: 0.32rem var(--mono);
  text-align: center;
}

.mask-columns span {
  padding: 0.32rem 0;
  overflow: hidden;
}

.mask-columns span:nth-child(5),
.mask-columns span:nth-child(10),
.mask-columns span:nth-child(14) {
  border-right: 1px solid var(--line-strong);
}

.mask-body {
  display: grid;
  grid-template-columns: 1rem 2.7rem 2.2rem minmax(0, 1fr);
  min-width: 0;
}

.mask-query-axis {
  display: grid;
  place-items: center;
  color: var(--muted);
  font: 0.5rem var(--mono);
  letter-spacing: 0.07em;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.mask-row-groups {
  display: grid;
  grid-template-rows: 5fr 5fr 4fr 4fr;
}

.mask-row-groups span {
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--line-strong);
  color: var(--ink);
  font: 0.4rem var(--mono);
  text-align: center;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.mask-row-groups span:nth-child(-n+2) {
  background: color-mix(in srgb, #4c78a8 10%, var(--surface));
}

.mask-row-groups span:nth-child(n+3) {
  background: color-mix(in srgb, #e15759 10%, var(--surface));
}

.mask-rows {
  display: grid;
  grid-template-rows: repeat(18, minmax(0, 1fr));
  align-items: center;
  padding-right: 0.3rem;
  color: var(--muted);
  font: 0.32rem var(--mono);
  text-align: right;
}

.mask-grid {
  display: grid;
  grid-template-columns: repeat(18, minmax(0, 1fr));
  grid-template-rows: repeat(18, minmax(0, 1fr));
  gap: 1px;
  aspect-ratio: 1;
}

.mask-grid > i,
.mask-legend i {
  display: block;
  border: 0;
  border-radius: 0.06rem;
  background: color-mix(in srgb, var(--ink) 6%, var(--surface));
}

.mask-grid > i {
  animation: researchCellIn 280ms ease both;
  animation-delay: calc(var(--cell) * 0.55ms);
}

.mask-grid > i.pair-vv,
.mask-legend i.pair-vv {
  background: #4c78a8;
}

.mask-grid > i.pair-vt,
.mask-legend i.pair-vt {
  background: #59a14f;
}

.mask-grid > i.pair-tv,
.mask-legend i.pair-tv {
  background: #f98e1d;
}

.mask-grid > i.pair-tt,
.mask-legend i.pair-tt {
  background: #e15759;
}

.mask-grid > i.edge-right {
  margin-right: 2px;
  box-shadow: 3px 0 0 -2px var(--line-strong);
}

.mask-grid > i.edge-bottom {
  margin-bottom: 2px;
  box-shadow: 0 3px 0 -2px var(--line-strong);
}

.mask-grid > i.edge-right.edge-bottom {
  box-shadow: 3px 0 0 -2px var(--line-strong), 0 3px 0 -2px var(--line-strong);
}

.mask-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 0.8rem;
  margin: 0.7rem 0 0 6.3rem;
  color: var(--muted);
  font: 0.4rem var(--mono);
}

.mask-legend span {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.mask-legend i {
  width: 0.65rem;
  height: 0.65rem;
}

.camera-attention-demo {
  min-width: 0;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: var(--surface);
}

.research-panel-visual {
  grid-template-columns: 1fr;
}

.camera-arch-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--signal);
  font: 0.57rem var(--mono);
  letter-spacing: 0.07em;
}

.camera-arch-heading small {
  color: var(--muted);
  font-size: 0.48rem;
}

.camera-main-path {
  position: relative;
  display: grid;
  grid-template-columns: 0.9fr auto 0.48fr auto 1.3fr auto 0.9fr auto 0.55fr auto 0.95fr;
  gap: 0.3rem;
  align-items: center;
  padding: 2.5rem 0 1.2rem;
}

.camera-main-path > i,
.camera-kv-path > i {
  color: var(--signal);
  font: 400 0.8rem var(--mono);
  font-style: normal;
}

.camera-arch-node,
.camera-projection-node,
.camera-add-node {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.35rem;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  background: var(--surface);
  text-align: center;
}

.camera-arch-node small,
.camera-add-node small {
  color: var(--muted);
  font: 0.43rem/1.35 var(--mono);
}

.camera-arch-node strong,
.camera-projection-node strong {
  font: 600 0.68rem/1.2 var(--mono);
}

.camera-arch-node sup,
.camera-arch-node sub,
.camera-projection-node sub {
  font-size: 0.7em;
}

.camera-projection-node {
  min-height: 3.7rem;
  padding: 0.35rem;
  background: color-mix(in srgb, var(--ink) 3%, var(--surface));
}

.camera-projection-node span {
  color: var(--signal);
  font: 0.54rem var(--mono);
}

.camera-cross-node {
  border-color: color-mix(in srgb, var(--signal) 45%, var(--line));
  background: color-mix(in srgb, var(--signal) 18%, var(--surface));
}

.camera-add-node {
  min-height: 3.7rem;
  border-radius: 50%;
  aspect-ratio: 1;
}

.camera-add-node strong {
  color: var(--signal);
  font: 400 1.2rem var(--sans);
}

.camera-output-node {
  border-color: color-mix(in srgb, var(--signal) 45%, var(--line));
}

.camera-residual-path {
  position: absolute;
  z-index: 0;
  top: 0.75rem;
  right: 22.5%;
  left: 5%;
  height: 1.15rem;
  border-top: 1px solid color-mix(in srgb, var(--signal) 60%, transparent);
  border-right: 1px solid color-mix(in srgb, var(--signal) 60%, transparent);
}

.camera-residual-path::before {
  position: absolute;
  top: -0.36rem;
  left: 0;
  padding-right: 0.35rem;
  background: var(--surface);
  color: var(--muted);
  content: "RESIDUAL";
  font: 0.42rem var(--mono);
}

.camera-residual-path::after {
  position: absolute;
  right: -0.24rem;
  bottom: -0.45rem;
  color: var(--signal);
  content: "↓";
  font: 0.65rem var(--mono);
}

.camera-kv-path {
  display: flex;
  width: min(14rem, 45%);
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin: 0 0 1.25rem 8%;
}

.camera-kv-path .camera-arch-node {
  min-width: 6.4rem;
}

.camera-pose-node {
  border-color: color-mix(in srgb, #4c78a8 45%, var(--line));
  background: color-mix(in srgb, #4c78a8 10%, var(--surface));
}

.camera-kv-projections {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.camera-kv-projections span {
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 0.2rem;
  color: var(--muted);
  font: 0.48rem var(--mono);
}

.camera-frame-alignment {
  display: grid;
  grid-template-columns: 1.2fr repeat(4, 1fr);
  gap: 0.45rem;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.camera-frame-alignment > span {
  color: var(--muted);
  font: 0.48rem var(--mono);
  letter-spacing: 0.06em;
}

.camera-frame-alignment > div {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.25rem;
}

.camera-frame-alignment b {
  display: grid;
  min-height: 2rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 0.18rem;
  color: var(--muted);
  font: 0.48rem var(--mono);
}

.camera-frame-alignment i {
  width: 0.8rem;
  height: 1px;
  background: var(--signal);
}

.camera-mobile-arch {
  display: none;
}

.camera-code-architecture {
  padding: 1rem;
}

.camera-code-architecture section {
  margin-top: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  background: color-mix(in srgb, var(--ink) 1.5%, var(--surface));
}

.camera-code-architecture section > header,
.camera-code-branch > header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 2.2rem;
  padding: 0.45rem 0.65rem;
  border-bottom: 1px solid var(--line);
}

.camera-code-architecture header span {
  color: var(--signal);
  font: 0.43rem var(--mono);
}

.camera-code-architecture header strong {
  font: 600 0.5rem var(--mono);
  letter-spacing: 0.04em;
}

.camera-tokenizer-flow,
.camera-branch-flow,
.camera-code-output {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.camera-tokenizer-flow {
  justify-content: center;
  padding: 0.75rem;
}

.camera-tokenizer-flow > em,
.camera-branch-flow > em,
.camera-code-output > em {
  color: var(--signal);
  font: 0.65rem var(--mono);
  font-style: normal;
}

.camera-matrix-input {
  display: flex;
  flex: 1.25;
  min-width: 0;
  flex-direction: column;
  gap: 0.4rem;
}

.camera-matrix-input > small,
.camera-code-node small,
.camera-code-add small {
  color: var(--muted);
  font: 0.4rem/1.3 var(--mono);
}

.camera-matrix-input > div {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.25rem;
}

.camera-matrix-input i {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  min-height: 3.1rem;
  border: 1px solid color-mix(in srgb, #4c78a8 42%, var(--line));
  border-radius: 0.16rem;
  overflow: hidden;
  background: color-mix(in srgb, #4c78a8 8%, var(--surface));
  font-style: normal;
}

.camera-matrix-input b {
  display: grid;
  place-items: center;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font: 0.42rem var(--mono);
}

.camera-code-node {
  display: flex;
  min-width: 0;
  min-height: 4rem;
  flex: 1;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 0.22rem;
  background: var(--surface);
  text-align: center;
}

.camera-code-node strong {
  font: 600 0.56rem/1.3 var(--mono);
}

.camera-code-node sup,
.camera-code-node sub {
  font-size: 0.7em;
}

.camera-code-active,
.camera-attention-node,
.camera-gate-node,
.camera-code-output .camera-output-node {
  border-color: color-mix(in srgb, var(--signal) 48%, var(--line));
  background: color-mix(in srgb, var(--signal) 12%, var(--surface));
}

.camera-qkv-section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  border: 0 !important;
  background: transparent !important;
}

.camera-code-branch {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  overflow: hidden;
  background: color-mix(in srgb, var(--ink) 1.5%, var(--surface));
}

.camera-code-branch.pose {
  background: color-mix(in srgb, #4c78a8 5%, var(--surface));
}

.camera-branch-flow {
  padding: 0.65rem;
}

.camera-branch-flow .camera-code-node {
  min-height: 4.5rem;
}

.camera-code-output {
  position: relative;
  margin-top: 0.8rem;
  padding: 2.4rem 0.75rem 0.8rem;
}

.camera-attention-node {
  flex: 1.25;
}

.camera-attention-node span {
  color: var(--signal);
  font: 0.4rem var(--mono);
}

.camera-gate-node {
  flex: 0.55;
}

.camera-code-add {
  display: flex;
  width: 3.2rem;
  min-width: 3.2rem;
  height: 3.2rem;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.1rem;
  border: 1px solid color-mix(in srgb, var(--signal) 48%, var(--line));
  border-radius: 50%;
  background: var(--surface);
}

.camera-code-add strong {
  color: var(--signal);
  font-size: 1rem;
  font-weight: 400;
}

.camera-code-residual {
  position: absolute;
  top: 0.65rem;
  right: 15%;
  left: 2.5%;
  height: 1rem;
  border-top: 1px solid color-mix(in srgb, var(--signal) 62%, transparent);
  border-right: 1px solid color-mix(in srgb, var(--signal) 62%, transparent);
  color: var(--muted);
  font: 0.4rem var(--mono);
}

.camera-code-residual::after {
  position: absolute;
  right: -0.22rem;
  bottom: -0.45rem;
  color: var(--signal);
  content: "↓";
}

.camera-block-mask > div {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
  padding: 0.7rem;
}

.camera-block-mask article {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 0.3rem;
  padding: 0.45rem;
  border: 1px solid var(--line);
  border-radius: 0.2rem;
  background: var(--surface);
}

.camera-query-cluster {
  display: grid;
  grid-template-columns: repeat(3, 0.35rem);
  gap: 0.12rem;
}

.camera-query-cluster i {
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 0.05rem;
  background: #4c78a8;
}

.camera-block-mask article > b {
  display: none;
}

.camera-block-mask article > em {
  color: var(--signal);
  font-size: 0.6rem;
  font-style: normal;
}

.camera-single-token {
  display: grid;
  width: 1.55rem;
  height: 1.55rem;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--signal) 48%, var(--line));
  border-radius: 0.18rem;
  background: color-mix(in srgb, var(--signal) 16%, var(--surface));
  font: 0.45rem var(--mono);
}

.distill-demo {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: var(--surface);
}

.distill-stage-strip {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) auto minmax(0, 1.15fr);
  align-items: stretch;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  overflow: hidden;
}

.distill-stage-strip > div {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.75rem;
  background: color-mix(in srgb, var(--ink) 2%, var(--surface));
}

.distill-stage-strip > div.active {
  background: color-mix(in srgb, var(--signal) 12%, var(--surface));
}

.distill-stage-strip > i {
  display: grid;
  width: 2rem;
  place-items: center;
  border-right: 1px solid var(--line);
  border-left: 1px solid var(--line);
  color: var(--signal);
  font-style: normal;
}

.distill-stage-strip span,
.distill-stage-strip small {
  color: var(--muted);
  font: 0.44rem/1.35 var(--mono);
}

.distill-stage-strip strong {
  font: 600 0.59rem/1.3 var(--mono);
}

.distill-student-row {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) auto 0.55fr auto 0.8fr auto 0.75fr;
  gap: 0.45rem;
  align-items: center;
  padding: 1rem 0;
}

.distill-student-row > i {
  color: var(--signal);
  font: 0.7rem var(--mono);
  font-style: normal;
}

.distill-history,
.distill-noise,
.distill-student-node,
.distill-xhat {
  display: flex;
  min-height: 4.2rem;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.6rem;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  background: color-mix(in srgb, var(--ink) 2%, var(--surface));
  text-align: center;
}

.distill-history {
  position: relative;
  padding-top: 1.2rem;
}

.distill-history > small {
  position: absolute;
  top: 0.4rem;
  left: 0.5rem;
}

.distill-history span {
  display: grid;
  width: 1.55rem;
  height: 1.55rem;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 0.15rem;
  font: 0.48rem var(--mono);
}

.distill-history i {
  color: var(--muted);
  font-style: normal;
}

.distill-history strong {
  margin-left: 0.25rem;
  color: var(--signal);
  font: 0.45rem var(--mono);
}

.distill-student-row small,
.distill-update small,
.distill-inference small {
  color: var(--muted);
  font: 0.42rem/1.35 var(--mono);
}

.distill-noise,
.distill-student-node,
.distill-xhat {
  flex-direction: column;
}

.distill-student-node {
  border-color: color-mix(in srgb, var(--signal) 45%, var(--line));
  background: color-mix(in srgb, var(--signal) 15%, var(--surface));
}

.distill-noise strong,
.distill-student-node strong,
.distill-xhat strong {
  font: 600 0.65rem var(--mono);
}

.distill-split {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.6rem;
  color: var(--muted);
  font: 0.43rem var(--mono);
  letter-spacing: 0.05em;
}

.distill-split span {
  height: 1px;
  background: var(--line-strong);
}

.distill-ddmd-branches {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  padding: 0.75rem 0;
}

.distill-ddmd-branch {
  display: grid;
  grid-template-columns: 0.45fr 1fr;
  gap: 0.55rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  background: color-mix(in srgb, var(--ink) 2%, var(--surface));
}

.distill-ddmd-branch header {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--line);
}

.distill-ddmd-branch header span,
.distill-ddmd-branch header small,
.distill-ddmd-branch > small {
  color: var(--muted);
  font: 0.42rem var(--mono);
}

.distill-ddmd-branch header strong {
  flex: 1;
  font: 600 0.54rem var(--mono);
}

.distill-score-input {
  display: grid;
  min-height: 3.7rem;
  place-items: center;
  border: 1px solid color-mix(in srgb, #e8944d 55%, var(--line));
  border-radius: 0.2rem;
  background: color-mix(in srgb, #e8944d 16%, var(--surface));
  font: 600 0.58rem var(--mono);
}

.distill-score-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.4rem;
}

.distill-score-pair span {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.45rem;
  border: 1px solid color-mix(in srgb, #4c78a8 45%, var(--line));
  border-radius: 0.2rem;
  background: color-mix(in srgb, #4c78a8 12%, var(--surface));
  text-align: center;
}

.distill-score-pair span.learned {
  border-color: color-mix(in srgb, var(--signal) 45%, var(--line));
  background: color-mix(in srgb, var(--signal) 15%, var(--surface));
}

.distill-score-pair b {
  font: 600 0.55rem var(--mono);
}

.distill-score-pair small {
  color: var(--muted);
  font: 0.36rem/1.25 var(--mono);
}

.distill-delta {
  grid-column: 1 / -1;
  padding: 0.55rem;
  border: 1px solid var(--line);
  background: var(--surface);
  font: 0.47rem/1.35 var(--mono);
  text-align: center;
}

.distill-ddmd-branch > small {
  grid-column: 1 / -1;
  text-align: center;
}

.distill-update {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) auto minmax(0, 0.65fr) auto auto;
  gap: 0.55rem;
  align-items: center;
  padding: 0.75rem;
  border: 1px solid color-mix(in srgb, var(--signal) 45%, var(--line));
  border-radius: 0.3rem;
  background: color-mix(in srgb, var(--signal) 9%, var(--surface));
}

.distill-update > div {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.distill-update strong,
.distill-update > b {
  font: 600 0.5rem/1.35 var(--mono);
}

.distill-update > span,
.distill-update > i {
  color: var(--signal);
  font-style: normal;
}

.distill-inference {
  display: grid;
  grid-template-columns: 1fr repeat(2, minmax(0, 0.7fr));
  gap: 0.6rem;
  align-items: stretch;
  padding-top: 0.75rem;
}

.distill-inference > span {
  align-self: center;
  color: var(--muted);
  font: 0.48rem var(--mono);
  letter-spacing: 0.06em;
}

.distill-inference > div {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
}

.distill-inference strong {
  color: var(--signal);
  font-size: 1.6rem;
  font-weight: 500;
}

@keyframes researchPanelIn {
  from { opacity: 0; transform: translateY(0.4rem); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes researchCellIn {
  from { opacity: 0; transform: scale(0.72); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes distillPulse {
  from { opacity: 0.3; transform: scaleX(0.55); }
  to { opacity: 1; transform: scaleX(1); }
}

.research-eval {
  display: grid;
  grid-template-columns: 0.72fr repeat(3, 1fr);
}

.research-eval > div {
  min-width: 0;
  min-height: 8.6rem;
  padding: 1rem;
  border-right: 1px solid var(--line);
}

.research-eval-heading,
.research-result {
  display: flex;
  flex-direction: column;
}

.research-eval-heading {
  justify-content: space-between;
  color: var(--muted);
  font: 0.6rem var(--mono);
  letter-spacing: 0.07em;
}

.research-eval-heading small {
  font-size: 0.5rem;
  line-height: 1.4;
}

.research-result strong {
  font-size: clamp(1.4rem, 2.2vw, 2.1rem);
  font-weight: 520;
  letter-spacing: -0.055em;
}

.research-result sup {
  margin-left: 0.2rem;
  color: var(--muted);
  font: 0.5rem var(--mono);
  letter-spacing: 0;
  vertical-align: top;
}

.research-result > span {
  margin-top: 0.35rem;
  font-size: 0.7rem;
  font-weight: 600;
}

.research-result small {
  margin-top: auto;
  color: var(--muted);
  font-size: 0.57rem;
  line-height: 1.4;
}

.research-limitation {
  display: flex;
  grid-column: 1 / -1;
  min-height: auto !important;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid var(--line);
  border-right: 0 !important;
  background: color-mix(in srgb, #d98b62 7%, var(--surface));
}

.research-limitation strong {
  flex: none;
  color: #a75832;
  font: 0.6rem var(--mono);
  letter-spacing: 0.06em;
}

.research-limitation small {
  color: var(--muted);
  font-size: 0.65rem;
}

/* Resources and footer */
.resources-section {
  padding: clamp(4.5rem, 8vw, 7rem) var(--gutter) clamp(3rem, 6vw, 5rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--signal) 9%, var(--paper));
}

.resources-intro {
  display: flex;
  align-items: center;
  flex-direction: column;
  text-align: center;
}

.resources-intro > .brand-mark {
  width: 3.2rem;
  height: 3.2rem;
  margin-bottom: 1.5rem;
  color: var(--signal);
}

.resources-intro h2 {
  max-width: 54rem;
}

.resources-intro > p {
  max-width: 35rem;
  margin-top: 1.2rem;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  max-width: calc(var(--content) - 2 * var(--gutter));
  margin: 2.6rem auto 0;
}

.resource-card {
  display: flex;
  min-width: 0;
  min-height: 6.2rem;
  align-items: center;
  gap: 0.8rem;
  padding: 1.2rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  text-align: left;
  transition: background 180ms ease, transform 180ms ease;
}

.resource-card:hover {
  background: var(--surface);
  transform: translateY(-2px);
}

.resource-unavailable {
  cursor: default;
}

.resource-unavailable:hover {
  transform: none;
  background: color-mix(in srgb, var(--surface) 55%, transparent);
}

.resource-status {
  margin-left: auto;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font: 0.58rem var(--mono);
  white-space: nowrap;
}

.unavailable-link {
  cursor: default;
  opacity: 0.62;
}

.unavailable-link small {
  margin-left: 0.45rem;
  color: var(--muted);
  font: 0.58rem var(--mono);
}

.resource-glyph {
  color: var(--signal);
}

.resource-copy {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
  gap: 0.4rem;
}

.resource-copy > strong {
  font-size: var(--type-body);
  font-weight: 680;
}

.resource-copy > small {
  color: var(--muted);
  font-size: var(--type-label);
  line-height: 1.5;
}

.resource-card > .icon {
  width: 0.9rem;
  height: 0.9rem;
  flex-basis: 0.9rem;
}

.additional-resource {
  margin-top: 1.4rem;
  text-align: center;
}

.footer {
  display: flex;
  max-width: var(--content);
  min-height: 8.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin: 0 auto;
  padding: 2rem var(--gutter);
}

.footer .brand {
  font-size: 1rem;
}

.footer .brand-mark {
  width: 1.8rem;
  height: 1.8rem;
}

.footer > span {
  color: var(--muted);
  font-size: var(--type-label);
}

.footer-separator {
  padding: 0 0.8rem;
}

.back-top {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--type-label);
}

.back-top .icon {
  width: 0.9rem;
  height: 0.9rem;
  transform: rotate(180deg);
}

/* 7. Dialogs */
dialog {
  max-height: min(90dvh, 54rem);
  overflow: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--line-strong);
  border-radius: 0.5rem;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 2rem 6rem #0007;
}

dialog::backdrop {
  background: #040805c9;
  backdrop-filter: blur(0.55rem);
}

.video-dialog {
  width: min(88rem, calc(100vw - 2rem));
  max-height: min(94dvh, 64rem);
}

.dialog-top {
  display: flex;
  min-height: 5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.4rem;
}

.dialog-top > div {
  min-width: 0;
}

.dialog-top h2 {
  margin-top: 0.35rem;
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  font-weight: 520;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

#case-summary {
  max-width: 58rem;
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: var(--type-body);
  line-height: 1.65;
}

.dialog-top .eyebrow {
  font-size: var(--type-micro);
}

.video-dialog video {
  width: 100%;
  aspect-ratio: 1280 / 704;
  background: #000;
  object-fit: contain;
}

.case-media {
  min-width: 0;
  background: #000;
}

.case-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(22rem, 0.72fr);
  align-items: stretch;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.video-error {
  padding: 1rem 1.4rem;
  color: #a82920;
  font-size: var(--type-small);
}

.video-error a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.45rem;
  text-decoration: underline;
}

.dialog-bottom {
  display: flex;
  min-height: 3.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1.4rem;
  color: var(--muted);
  font-size: var(--type-label);
  line-height: 1.5;
}

.case-specifications {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 1.4rem;
  background: var(--paper);
}

.case-prompts {
  min-width: 0;
  max-height: min(60dvh, 37rem);
  overflow-y: auto;
  padding: 1.2rem;
  border-left: 1px solid var(--line);
  background: var(--paper);
  overscroll-behavior: contain;
  scrollbar-width: thin;
}

.case-specifications dl {
  display: grid;
  min-width: 0;
  flex: 1;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  margin: 0;
}

.case-specifications dl > div {
  display: grid;
  gap: 0.3rem;
  padding: 0.25rem 1rem;
  border-left: 1px solid var(--line);
}

.case-specifications dt {
  color: var(--muted);
  font-size: var(--type-label);
}

.case-specifications dd {
  font-family: var(--mono);
  font-size: var(--type-small);
  text-align: left;
}

.case-prompts-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.prompt-status {
  color: var(--muted);
  font-size: var(--type-micro);
}

.prompt-status::before {
  display: inline-block;
  width: 0.35rem;
  height: 0.35rem;
  margin-right: 0.45rem;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  content: "";
}

.prompt-status.verified::before {
  border-color: var(--signal);
  background: var(--signal);
}

.case-prompts ol {
  display: grid;
  gap: 0.6rem;
  margin-top: 1rem;
  list-style: none;
}

.prompt-turn {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  background: var(--surface);
  text-align: left;
  transition: border-color 180ms ease, background 180ms ease;
}

.prompt-turn:hover,
.prompt-turn:focus-visible {
  border-color: var(--line-strong);
  background: color-mix(in srgb, var(--ink) 4%, var(--surface));
}

.prompt-turn.active {
  border-left: 0.22rem solid var(--signal);
  background: var(--accent-soft);
  box-shadow: inset 0.2rem 0 color-mix(in srgb, var(--signal) 12%, transparent);
}

.prompt-turn.active strong {
  color: var(--signal);
}

.prompt-turn > span {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.prompt-turn strong,
.prompt-turn small {
  font-family: var(--mono);
  font-size: var(--type-micro);
  letter-spacing: 0.04em;
}

.prompt-turn small {
  color: var(--muted);
  text-align: right;
}

.prompt-turn p {
  margin-top: 0.65rem;
  color: var(--ink);
  font-size: var(--type-body);
  line-height: 1.7;
  white-space: pre-wrap;
}

.prompt-unavailable {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px dashed var(--line-strong);
  color: var(--muted);
  font-size: var(--type-small);
  line-height: 1.7;
}

.release-dialog {
  width: min(31rem, calc(100vw - 2rem));
  padding: clamp(2rem, 5vw, 3rem);
}

.release-close {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
}

.release-dialog > .brand-mark {
  display: block;
  width: 3rem;
  height: 3rem;
  margin-bottom: 1.8rem;
  color: var(--signal);
}

.release-dialog h2 {
  margin-top: 1rem;
  font-size: clamp(2rem, 5vw, 2.7rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.release-resource {
  display: inline-block;
  margin-top: 1.2rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 0.2rem;
  color: var(--signal);
  font: 0.64rem var(--mono);
}

.release-dialog p {
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: var(--type-body);
  line-height: 1.8;
}

.release-dialog .button {
  width: 100%;
  margin-top: 1.5rem;
}

/* 8. Dark-mode section refinements */
[data-theme="immersive"] .cinema-statement {
  padding-top: clamp(6rem, 11vw, 10rem);
  text-align: center;
}

.cinema-statement h2 {
  max-width: 66rem;
  margin: 1.5rem auto 0;
  font-size: clamp(3rem, 5.8vw, 5.75rem);
  font-weight: 470;
  line-height: 0.98;
  letter-spacing: -0.06em;
  text-wrap: balance;
}

.cinema-statement h2 span {
  color: var(--accent);
  font-family: var(--display);
  font-style: italic;
}

.cinema-statement > p {
  max-width: 34rem;
  margin: 1.8rem auto 0;
  color: var(--muted);
  font-size: var(--type-lead);
  line-height: 1.85;
}

[data-theme="immersive"] .stats {
  margin-top: clamp(3rem, 6vw, 5.5rem);
}

[data-theme="immersive"] .world-category {
  color: #b8c7b4;
}

[data-theme="immersive"] .card-arrow {
  border-color: var(--line-strong);
  color: var(--accent);
}

[data-theme="immersive"] .research-copy > .text-link {
  color: var(--accent);
}

[data-theme="immersive"] .architecture-model {
  background: color-mix(in srgb, var(--signal) 20%, var(--surface));
}

[data-theme="immersive"] .resources-section {
  background: #dfe9c8;
  color: #182117;
  color-scheme: light;
  --surface: #f3f7e8;
  --ink: #182117;
  --muted: #65705e;
  --line: #b8c3a7;
  --line-strong: #99a98b;
  --signal: #587b2f;
}

[data-theme="immersive"] .footer {
  padding-bottom: max(6rem, calc(2rem + env(safe-area-inset-bottom)));
}

/* 9. Language typography */
html:lang(en) :is(
  .research-heading h1,
  .hero-tagline,
  .mosaic-hero h1,
  .mosaic-hero h1 em,
  .section-heading h2,
  .research-copy h2,
  .resources-intro h2,
  .cinema-statement h2,
  .cinema-statement h2 span,
  .showcase-caption h2,
  .cap-card h3,
  .world-card-caption h3,
  .release-dialog h2
) {
  font-family: var(--display);
  font-style: normal;
  font-weight: 700;
}

html:lang(zh-CN) {
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC",
    ui-sans-serif, system-ui, sans-serif;
  --display-zh: "Tencent Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
}

html:lang(zh-CN) body {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.72;
  line-break: strict;
  word-break: normal;
}

html:lang(zh-CN) .eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

html:lang(zh-CN) :is(
  .research-heading h1,
  .hero-tagline,
  .mosaic-hero h1,
  .mosaic-hero h1 em,
  .section-heading h2,
  .research-copy h2,
  .resources-intro h2,
  .cinema-statement h2,
  .cinema-statement h2 span,
  .showcase-caption h2,
  .cap-card h3,
  .world-card-caption h3,
  .release-dialog h2
) {
  font-family: var(--display-zh);
  font-style: normal;
  font-weight: 700;
}

html:lang(zh-CN) :is(
  .research-heading h1,
  .section-heading h2,
  .research-copy h2,
  .resources-intro h2,
  .cinema-statement h2
) {
  letter-spacing: -0.025em;
}

html:lang(zh-CN) :is(
  .navigation,
  .mode-switch,
  .language,
  .button,
  .filter,
  .journey-tabs,
  .resource-copy > strong
) {
  font-weight: 600;
}

html:lang(zh-CN) :is(
  .research-intro > p,
  .section-heading > p,
  .research-copy > p,
  .resources-intro > p,
  .cap-card > p,
  .world-card-caption p,
  .statement-body
) {
  font-size: max(1em, 0.95rem);
  font-weight: 450;
  line-height: 1.95;
}

html:lang(zh-CN) .mosaic-hero h1 {
  max-width: 55rem;
  margin-inline: auto;
  font-size: clamp(3.8rem, 6.5vw, 6.25rem);
  line-height: 1.13;
  letter-spacing: -0.035em;
}

/* 10. Responsive layouts */
@media (max-width: 75rem) {
  :root {
    --gutter: clamp(1.5rem, 4vw, 3rem);
  }

  .header {
    grid-template-columns: 1fr auto;
  }

  .navigation {
    display: none;
    position: absolute;
    top: calc(100% - 1px);
    right: var(--gutter);
    left: var(--gutter);
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 0.8rem 1.2rem;
    border: 1px solid var(--line);
    background: var(--paper);
    box-shadow: 0 1rem 2rem #0002;
    color: var(--ink);
  }

  .navigation.is-open {
    display: flex;
  }

  .navigation a {
    min-height: 3rem;
    border-bottom: 1px solid var(--line);
  }

  .navigation a:last-child {
    border-bottom: 0;
  }

  .navigation a::after {
    display: none;
  }

  [data-theme="immersive"] .navigation {
    border-color: var(--line);
    background: var(--paper);
  }

  .menu-toggle {
    display: inline-flex;
  }

  .research-heading {
    gap: 3rem;
  }

  .journey-shell {
    grid-template-columns: minmax(0, 1.45fr) minmax(18rem, 0.75fr);
  }

  .editorial-feature,
  .longform-layout {
    width: 96%;
  }

  .resource-card {
    padding: 1rem;
  }
}

@media (max-width: 56.25rem) {
  .header-cta {
    display: none;
  }

  .research-heading,
  .section-heading {
    grid-template-columns: minmax(0, 1.25fr) minmax(14rem, 0.75fr);
    gap: 2rem;
  }

  .research-heading h1 {
    font-size: clamp(3.8rem, 9vw, 5.75rem);
  }

  .research-showcase {
    height: clamp(21rem, 48vw, 28rem);
  }

  .journey-shell,
  .research-section {
    grid-template-columns: 1fr;
  }

  .research-copy {
    position: static;
  }

  .research-system {
    max-width: none;
    justify-self: stretch;
  }

  .camera-feature,
  .longform-layout {
    width: 100%;
    grid-template-columns: 1fr;
  }

  .draft-experience {
    width: 100%;
    grid-template-columns: 1fr;
  }

  .draft-stage video {
    min-height: clamp(20rem, 60vw, 27rem);
  }

  .draft-workflow {
    padding-bottom: 0;
  }

  .draft-timeline,
  .draft-record {
    grid-column: auto;
  }

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

  .camera-rail .rail-index,
  .camera-rail .rail-status {
    grid-column: 1 / -1;
  }

  .feature-rail > div:first-of-type {
    margin-top: 1rem;
  }

  .longform-player {
    grid-row: 1;
  }

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

  .longform-rail .stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .longform-rail .stat {
    min-height: 6.5rem;
    border-left: 1px solid var(--line);
  }

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

  .journey-panel {
    padding: 1.4rem;
  }

  .journey-steps {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.35rem;
  }

  .step-copy > span {
    display: block;
  }

  .cap-grid {
    grid-template-columns: 1fr;
    border: 0;
    gap: 1rem;
  }

  .cap-card,
  .cap-card:first-child,
  .cap-card:last-child {
    position: relative;
    min-height: 17rem;
    padding: 2rem 48% 2rem 1.5rem;
    border: 1px solid var(--line);
  }

  .cap-art {
    position: absolute;
    top: 1.4rem;
    right: 2%;
    width: 43%;
    height: 13rem;
    margin: 0;
  }

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

@media (max-width: 43.75rem) {
  :root {
    --gutter: 1.25rem;
    --header-height: 4.5rem;
  }

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

  .longform-rail .stat:nth-child(odd) {
    border-left: 0;
  }

  .camera-rail {
    grid-template-columns: 1fr;
  }

  .camera-rail .rail-index,
  .camera-rail .rail-status {
    grid-column: auto;
  }

  html {
    scroll-padding-top: 1.25rem;
  }

  .header,
  .header.scrolled {
    min-height: var(--header-height);
    padding: 0 var(--gutter);
    backdrop-filter: none;
  }

  .header-identity {
    gap: 0;
  }

  .brand {
    font-size: 1.05rem;
  }

  .brand-mark {
    width: 1.8rem;
    height: 1.8rem;
    flex-basis: 1.8rem;
  }

  .mode-switch {
    position: fixed;
    z-index: 60;
    right: 50%;
    bottom: max(0.75rem, env(safe-area-inset-bottom));
    transform: translateX(50%);
    border-color: var(--line-strong);
    background: color-mix(in srgb, var(--paper) 94%, transparent);
    box-shadow: 0 0.6rem 2rem #0003;
    backdrop-filter: blur(1rem);
  }

  .mode-switch a {
    min-height: 2.75rem;
    padding-inline: 0.9rem;
  }

  [data-theme="immersive"] .mode-switch {
    border-color: var(--line-strong);
    background: #111813ed;
  }

  .header-right {
    gap: 0.25rem;
  }

  .language {
    min-width: 2.75rem;
    justify-content: center;
    padding: 0;
  }

  .language span {
    display: none;
  }

  .navigation {
    right: 0;
    left: 0;
    padding-inline: var(--gutter);
  }

  .research-hero {
    padding-top: 2rem;
  }

  .hero-coordinate {
    font-size: var(--type-micro);
  }

  .research-heading,
  .section-heading {
    display: block;
  }

  .research-heading {
    margin: 0 0 2rem;
  }

  .research-heading h1 {
    font-size: clamp(3.2rem, 14vw, 4.35rem);
    line-height: 0.92;
  }

  .hero-tagline {
    margin-top: 1rem;
    font-size: clamp(1.35rem, 7vw, 1.8rem);
  }

  .research-intro {
    margin-top: 1.8rem;
  }

  .research-intro > p {
    font-size: var(--type-body);
  }

  .research-showcase {
    height: clamp(18rem, 82vw, 24rem);
  }

  .research-showcase > .preview-video {
    object-position: 48% center;
  }

  .showcase-top {
    top: 1rem;
    right: 1rem;
    left: 1rem;
  }

  .showcase-caption {
    right: 1.15rem;
    bottom: 1.25rem;
    left: 1.15rem;
    align-items: center;
  }

  .showcase-caption h2 {
    font-size: 1.6rem;
  }

  .showcase-caption p {
    max-width: 15rem;
    font-size: var(--type-small);
  }

  .round-play {
    width: 2.75rem;
    height: 2.75rem;
    flex-basis: 2.75rem;
  }

  .preview-toggle {
    top: 2.8rem;
    right: 0.4rem;
  }

  .showcase-foot {
    display: block;
    padding: 0.85rem 0;
  }

  .showcase-foot > span {
    display: block;
    max-width: 20rem;
    line-height: 1.6;
  }

  .showcase-foot a {
    margin-top: 0.35rem;
  }

  .cinema-hero {
    min-height: 43rem;
    max-height: 65rem;
  }

  .mosaic-shade {
    background:
      radial-gradient(ellipse 78% 43% at 50% 48%, #08100bd6, #08100b8f 64%, #08100b1a 100%),
      linear-gradient(180deg, #050a07b8 0%, transparent 24%, transparent 70%, #080e0be8 100%);
  }

  .mosaic-hero-content {
    top: calc(var(--header-height) + 1.5rem);
    right: var(--gutter);
    bottom: 7.5rem;
    left: var(--gutter);
  }

  .mosaic-hero-content .hero-coordinate {
    display: none;
  }

  .cinema-copy {
    width: 100%;
  }

  .mosaic-hero h1,
  html:lang(zh-CN) .mosaic-hero h1 {
    font-size: clamp(2.8rem, 12vw, 4rem);
    line-height: 1.05;
    letter-spacing: -0.05em;
  }

  html:lang(zh-CN) .mosaic-hero h1 {
    line-height: 1.2;
    letter-spacing: -0.025em;
  }

  .cinema-copy > p {
    font-size: var(--type-body);
  }

  .cinema-actions {
    gap: 0.8rem;
    margin-top: 1.5rem;
  }

  .cinema-actions .button,
  .cinema-watch {
    font-size: var(--type-label);
  }

  .mosaic-bottom {
    right: var(--gutter);
    bottom: max(4.7rem, calc(3.8rem + env(safe-area-inset-bottom)));
    left: var(--gutter);
    gap: 0.6rem;
  }

  .mosaic-count {
    font-size: var(--type-micro);
    letter-spacing: 0.06em;
  }

  .mosaic-scroll {
    font-size: var(--type-micro);
    letter-spacing: 0.08em;
  }

  .section {
    padding-top: 5rem;
  }

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 2.5rem;
    border-bottom: 0;
  }

  .stat {
    min-height: 6.6rem;
    border-bottom: 1px solid var(--line);
  }

  .stat:nth-child(odd) {
    border-left: 0;
  }

  .stat:nth-child(even) {
    border-left: 1px solid var(--line);
  }

  .section-heading > p {
    max-width: 31rem;
    margin-top: 1.25rem;
  }

  .section-heading h2,
  .research-copy h2,
  .resources-intro h2 {
    font-size: clamp(2rem, 8.5vw, 2.75rem);
    line-height: 1.06;
  }

  .gallery-bar {
    align-items: flex-start;
    gap: 0.4rem;
  }

  .gallery-meta {
    flex-direction: column;
    align-items: flex-end;
    gap: 0.3rem;
  }

  .gallery-meta > span:first-child {
    display: none;
  }

  .filters {
    gap: 0.2rem;
  }

  .filter {
    padding-inline: 0.8rem;
    font-size: var(--type-micro);
  }

  .gallery-count {
    min-width: 3.2rem;
    font-size: var(--type-micro);
  }

  .gallery-marquee {
    gap: 2.2rem;
    padding-inline: var(--gutter);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 2.5rem, #000 calc(100% - 2.5rem), transparent);
    mask-image: linear-gradient(90deg, transparent, #000 2.5rem, #000 calc(100% - 2.5rem), transparent);
  }

  .world-card {
    flex-basis: min(78vw, 22rem);
  }

  .world-visual {
    aspect-ratio: 1.42;
  }

  .world-card-caption h3 {
    font-size: 1.4rem;
  }

  .world-card-caption p {
    font-size: var(--type-small);
  }

  .journey-panel {
    padding: 1.1rem 0.9rem;
  }

  .journey-steps {
    grid-template-columns: 1fr;
  }

  .step-copy > span {
    display: none;
  }

  .journey-step.active .step-copy > span {
    display: block;
  }

  .cap-card,
  .cap-card:first-child,
  .cap-card:last-child {
    min-height: 0;
    padding: 1.5rem 1.2rem 1.8rem;
  }

  .cap-art {
    position: relative;
    top: auto;
    right: auto;
    width: 100%;
    height: 13.5rem;
    margin: 0.6rem 0 1.5rem;
  }

  .cap-card h3 {
    font-size: 1.6rem;
  }

  .camera-control-art {
    height: 24rem;
  }

  .camera-feature .mini-keyboard {
    width: 4.5rem;
  }

  .camera-feature .mini-keyboard kbd {
    width: 1.35rem;
    height: 1.35rem;
  }

  .trajectory-chip {
    display: none;
  }

  .longform-player figcaption {
    align-items: flex-start;
    flex-direction: column;
    padding: 0.9rem;
  }

  .research-section {
    gap: 3rem;
    padding-top: 5.5rem;
    padding-bottom: 5rem;
  }

  .research-specs {
    grid-template-columns: repeat(3, 1fr);
  }

  .research-specs > strong {
    grid-column: 1 / -1;
    min-height: 2.7rem;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .research-system > figcaption {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.45rem;
  }

  .research-flow {
    grid-template-columns: 1fr;
    padding: 0.8rem;
  }

  .research-node {
    min-height: 8.5rem;
  }

  .research-arrow {
    height: 1.8rem;
    transform: rotate(90deg);
  }

  .research-node-output {
    min-height: 12rem;
  }

  .research-output-strip img {
    aspect-ratio: 1.6;
  }

  .research-principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .research-principles button:nth-child(2) {
    border-right: 0;
  }

  .research-principles button:nth-child(-n+2) {
    border-bottom: 1px solid var(--line);
  }

  .research-explorer-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.35rem;
  }

  .research-panel {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 1.4rem;
    padding: 1rem 0.8rem 1.2rem;
  }

  .research-panel-copy h3,
  .research-panel-copy p {
    max-width: none;
  }

  .mask-demo {
    padding: 0.5rem;
  }

  .mask-key-axis,
  .mask-column-groups,
  .mask-columns,
  .mask-legend {
    margin-left: 5.3rem;
  }

  .mask-body {
    grid-template-columns: 0.8rem 2.2rem 2.3rem minmax(0, 1fr);
  }

  .mask-column-groups span,
  .mask-columns,
  .mask-row-groups span,
  .mask-rows,
  .mask-legend {
    font-size: 0.3rem;
  }

  .mask-legend {
    gap: 0.35rem 0.55rem;
  }

  .camera-attention-demo {
    padding: 0.8rem;
  }

  .camera-arch-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.35rem;
  }

  .camera-main-path,
  .camera-kv-path {
    display: none;
  }

  .camera-mobile-arch {
    display: flex;
    align-items: center;
    flex-direction: column;
    gap: 0.65rem;
    padding: 1.2rem 0;
  }

  .camera-mobile-inputs {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
  }

  .camera-mobile-inputs > div,
  .camera-mobile-output,
  .camera-mobile-arch > .camera-cross-node {
    display: flex;
    min-height: 4.5rem;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.35rem;
    padding: 0.6rem;
    border: 1px solid var(--line);
    border-radius: 0.25rem;
    text-align: center;
  }

  .camera-mobile-inputs > div:last-child {
    border-color: color-mix(in srgb, #4c78a8 45%, var(--line));
    background: color-mix(in srgb, #4c78a8 10%, var(--surface));
  }

  .camera-mobile-inputs small,
  .camera-mobile-arch .camera-cross-node small {
    color: var(--muted);
    font: 0.45rem var(--mono);
  }

  .camera-mobile-inputs strong,
  .camera-mobile-arch .camera-cross-node strong {
    font: 600 0.6rem var(--mono);
  }

  .camera-mobile-arch > i {
    color: var(--signal);
    font-style: normal;
  }

  .camera-mobile-arch > .camera-cross-node {
    width: 72%;
    border-color: color-mix(in srgb, var(--signal) 45%, var(--line));
    background: color-mix(in srgb, var(--signal) 18%, var(--surface));
  }

  .camera-mobile-output {
    width: 100%;
    min-height: 3.5rem;
    flex-direction: row;
    color: var(--muted);
    font: 0.52rem var(--mono);
  }

  .camera-mobile-output i {
    color: var(--signal);
    font-style: normal;
  }

  .camera-frame-alignment {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .camera-frame-alignment > span {
    grid-column: 1 / -1;
  }

  .camera-frame-alignment > div {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .camera-frame-alignment i {
    width: 1px;
    height: 0.65rem;
  }

  .camera-tokenizer-flow,
  .camera-branch-flow,
  .camera-code-output {
    flex-direction: column;
  }

  .camera-tokenizer-flow > em,
  .camera-branch-flow > em,
  .camera-code-output > em {
    transform: rotate(90deg);
  }

  .camera-matrix-input,
  .camera-code-node {
    width: 100%;
    flex: auto;
  }

  .camera-matrix-input > small {
    text-align: center;
  }

  .camera-qkv-section {
    grid-template-columns: 1fr;
  }

  .camera-code-output {
    padding-top: 0.75rem;
  }

  .camera-code-residual {
    display: none;
  }

  .camera-code-add {
    width: 3.4rem;
    min-width: 3.4rem;
    height: 3.4rem;
  }

  .camera-block-mask > div {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .camera-block-mask article {
    grid-template-columns: 1fr auto auto;
  }

  .distill-stage-strip {
    grid-template-columns: 1fr;
  }

  .distill-stage-strip > i {
    width: auto;
    height: 1.7rem;
    transform: rotate(90deg);
    border: 0;
  }

  .distill-student-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .distill-history {
    flex: 1 0 100%;
  }

  .distill-noise,
  .distill-student-node,
  .distill-xhat {
    min-width: 0;
    flex: 1;
  }

  .distill-ddmd-branches {
    grid-template-columns: 1fr;
  }

  .distill-update {
    grid-template-columns: 1fr;
  }

  .distill-update > span,
  .distill-update > i {
    transform: rotate(90deg);
    justify-self: center;
  }

  .distill-inference {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .distill-inference > span {
    grid-column: 1 / -1;
  }

  .research-eval {
    grid-template-columns: 1fr;
  }

  .research-eval > div {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .research-eval-heading {
    min-height: 4.2rem !important;
  }

  .research-result {
    min-height: 7.5rem !important;
  }

  .research-result small {
    margin-top: 1rem;
  }

  .research-limitation {
    grid-column: auto;
    align-items: flex-start;
    flex-direction: column;
    border-bottom: 0 !important;
  }

  .resources-section {
    padding-top: 4.2rem;
  }

  .resource-grid {
    gap: 0.55rem;
  }

  .resource-card {
    align-items: flex-start;
    flex-wrap: wrap;
    padding: 1rem 0.85rem;
  }

  .resource-copy {
    width: 100%;
    flex-basis: 100%;
  }

  .resource-card > .icon {
    margin-left: auto;
  }

  .footer {
    min-height: 7rem;
    padding-bottom: max(6rem, calc(2rem + env(safe-area-inset-bottom)));
  }

  .footer > span {
    display: none;
  }

  .video-dialog {
    width: calc(100vw - 1rem);
    max-height: calc(100dvh - 1rem);
  }

  .dialog-top {
    min-height: 4.4rem;
    padding: 0.75rem 0.9rem;
  }

  .dialog-top h2 {
    font-size: 1.2rem;
  }

  .video-dialog video {
    max-height: 52dvh;
  }

  .dialog-bottom {
    align-items: flex-start;
    padding: 0.75rem 0.9rem;
    font-size: var(--type-micro);
  }

  .case-workspace {
    grid-template-columns: 1fr;
  }

  .case-prompts {
    max-height: none;
    padding: 1.25rem 0.9rem;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .case-specifications {
    display: block;
    padding: 1.25rem 0.9rem;
  }

  .case-specifications dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 0.8rem;
  }

  .case-specifications dl > div {
    padding: 0.65rem 0.7rem;
    border-bottom: 1px solid var(--line);
  }

  .prompt-turn {
    padding-inline: 0.8rem;
  }

  .release-dialog {
    width: calc(100vw - 1.5rem);
    max-height: calc(100dvh - 1.5rem);
    padding: 2rem 1.35rem 1.35rem;
  }
}

@media (max-width: 30rem) {
  :root {
    --gutter: 1rem;
  }

  .hero-coordinate {
    display: none;
  }

  .research-heading h1 {
    font-size: clamp(3rem, 14vw, 4rem);
  }

  .research-showcase {
    height: 88vw;
  }

  .showcase-caption p {
    max-width: 13.5rem;
  }

  .mosaic-hero-content .eyebrow {
    font-size: var(--type-micro);
    letter-spacing: 0.08em;
  }

  .cinema-actions {
    flex-wrap: wrap;
  }

  .mosaic-count {
    display: none;
  }

  .mosaic-scroll {
    margin-right: auto;
  }

  .filter {
    padding-inline: 0.68rem;
  }

  .resource-grid {
    grid-template-columns: 1fr;
  }

  .architecture-flow {
    grid-template-columns: 1fr;
  }

  .architecture-flow > li {
    min-height: 7.3rem;
  }
}

/* 11. Motion and high-contrast preferences */
[data-reveal] {
  transition: opacity 650ms ease, transform 650ms ease;
}

@media (min-width: 50rem) and (prefers-reduced-motion: no-preference) {
  [data-reveal]:not(.revealed) {
    opacity: 0;
    transform: translateY(1.1rem);
  }

  .cap-card:nth-child(2) {
    transition-delay: 80ms;
  }

  .cap-card:nth-child(3) {
    transition-delay: 160ms;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .gallery-marquee {
    -webkit-mask-image: none;
    mask-image: none;
  }

  .gallery-lane {
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: thin;
  }

  .gallery-track {
    animation: none !important;
    transform: none !important;
  }

  .gallery-sequence-copy {
    display: none;
  }
}

@media (forced-colors: active) {
  :where(a, button, video):focus-visible {
    outline: 0.18rem solid Highlight;
  }

  .status-dot,
  .step-dot,
  .video-label > i {
    forced-color-adjust: none;
  }

  .world-visual::after,
  .research-showcase::after,
  .mosaic-shade {
    display: none;
  }
}