/* Research illustrations only; the existing shared shell remains in research/style.css. */
.r-page {
  --r-blue: #1f5fe0;
  --r-line: #dfe3eb;
  --r-muted: #5d6470;
  --r-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  width: min(1120px, calc(100% - 40px));
  margin: auto;
}
.r-page [hidden] {
  display: none !important;
}
.r-page h1,
.r-page h2,
.r-page h3,
.r-page p {
  margin: 0;
}
.r-page a:focus-visible,
.r-page button:focus-visible,
.r-page summary:focus-visible {
  outline: 3px solid var(--r-blue);
  outline-offset: 5px;
}
.r-page .eyebrow {
  color: var(--r-muted);
  font-size: 14px;
  font-weight: 650;
  margin-bottom: 18px;
}
.r-hero {
  padding: 88px 0 66px;
  text-align: center;
}
.r-hero h1 {
  /* The global h1 cap in style.css would pin this centered title to the left. */
  max-width: none;
  font-size: clamp(42px, 6.3vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.05em;
}
.r-hero .r-lede {
  max-width: 680px;
  margin: 24px auto 30px;
  font-size: clamp(18px, 2vw, 21px);
  color: var(--r-muted);
  line-height: 1.6;
}
.r-jump {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.r-jump a {
  display: flex;
  gap: 28px;
  align-items: center;
  border: 1px solid var(--r-line);
  border-radius: 999px;
  padding: 10px 18px;
  background: #fff;
  color: #343b47;
  font-size: 13px;
  text-decoration: none;
}
.r-jump a:hover {
  border-color: var(--r-blue);
  color: var(--r-blue);
}
.r-overview {
  display: grid;
  grid-template-columns: 1fr 50px 1.2fr 50px 1fr;
  align-items: center;
  gap: 20px;
  max-width: 930px;
  margin: 56px auto 20px;
  padding: 36px;
  background: #f0f3f8;
  border: 1px solid #e5e9f0;
  border-radius: 24px;
}
.r-overview-project,
.r-overview-agent {
  display: grid;
  justify-items: center;
  gap: 8px;
}
.r-overview strong {
  font-size: 17px;
  font-weight: 650;
}
.r-overview small {
  color: var(--r-muted);
  font-size: 12px;
}
.r-file-icon,
.r-agent-icon {
  display: grid;
  place-items: center;
  width: 50px;
  height: 56px;
  margin-bottom: 6px;
  border: 1px solid #d0d8e6;
  border-radius: 9px;
  background: #fff;
  color: var(--r-blue);
  font: 600 17px var(--r-mono);
  box-shadow: 0 5px 12px #1e355208;
}
.r-agent-icon {
  border-radius: 16px;
  background: var(--r-blue);
  color: white;
  font-size: 32px;
}
.r-overview-arrow {
  font-size: 30px;
  color: #8d9bb4;
}
.r-overview-systems {
  display: grid;
  gap: 12px;
  text-align: left;
}
.r-overview-systems > span {
  display: grid;
  gap: 3px;
  padding: 14px 20px;
  background: #fff;
  border: 1px solid var(--r-line);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
}
.r-overview-systems small {
  font-weight: 400;
}
.r-hero .r-hero-caption {
  font-size: 12px;
  color: var(--r-muted);
}
.r-chapter {
  padding: 76px 0 44px;
  border-top: 1px solid var(--r-line);
  scroll-margin-top: 75px;
}
.r-chapter-heading {
  max-width: 730px;
  margin-bottom: 30px;
}
.r-chapter-heading h2 {
  font-size: clamp(30px, 4.3vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.04em;
}
.r-chapter-heading > p:last-child {
  margin-top: 18px;
  color: var(--r-muted);
  font-size: 18px;
  line-height: 1.65;
}
.r-closing {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  padding: 48px 0 72px;
  margin-top: 40px;
  border-top: 1px solid var(--r-line);
}
.r-closing > div {
  max-width: 660px;
}
.r-closing h2 {
  font-size: 30px;
  line-height: 1.15;
}
.r-closing p:not(.eyebrow) {
  margin-top: 16px;
  color: var(--r-muted);
  font-size: 14px;
}
.r-closing > a {
  flex-shrink: 0;
}
.r-detail .r-hero {
  max-width: 840px;
  margin: auto;
  padding-bottom: 40px;
}
.r-back {
  display: inline-block;
  margin-bottom: 34px;
  font-size: 12px;
}
.r-detail .r-hero h1 {
  font-size: clamp(40px, 5.5vw, 66px);
}
.r-notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
  padding: 50px 0;
}
.r-notes h2 {
  font-size: 24px;
  line-height: 1.2;
  margin-bottom: 16px;
}
.r-notes article > p:last-child {
  color: var(--r-muted);
  font-size: 14px;
  line-height: 1.8;
}
.r-source {
  border-top: 1px solid var(--r-line);
  padding: 22px 0;
  color: var(--r-muted);
  font-size: 13px;
}
.r-source summary {
  cursor: pointer;
  font-weight: 600;
  color: #343b47;
}
.r-source > p {
  margin-top: 16px;
}
.r-source ul {
  list-style: none;
  padding: 0;
}
.r-source li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  padding: 8px 0;
}
.r-source code {
  color: #425980;
  font: 11px var(--r-mono);
  overflow-wrap: anywhere;
}
.r-source .research-panel {
  margin-top: 20px;
}

/* AI source package panel (/research/ai/): a heading, then three cards. */
.research-panel {
  display: grid;
  gap: 24px;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--r-line);
  border-radius: 20px;
  background: #fff;
}
.panel-heading h2 {
  margin: 4px 0 0;
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 700;
  letter-spacing: -0.026em;
  line-height: 1.15;
}
.panel-heading p:not(.eyebrow) {
  max-width: 680px;
  margin: 12px 0 0;
  color: var(--r-muted);
  font-size: 16px;
  line-height: 1.55;
}
.panel-heading .eyebrow {
  margin: 0;
  color: var(--r-muted);
  font-size: 13px;
  font-weight: 600;
}
.panel-heading .implementation-link {
  font-size: 14px;
}
.panel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.panel-grid section {
  display: grid;
  align-content: start;
  gap: 8px;
  min-width: 0;
  padding: 18px;
  border-radius: 14px;
  background: #f5f5f7;
}
.panel-grid h3 {
  margin: 0;
  color: #0b0c0f;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.panel-grid p {
  margin: 0;
  color: var(--r-muted);
  font-size: 14.5px;
  line-height: 1.5;
}
.track-link {
  width: fit-content;
  margin-top: 4px;
  color: var(--r-blue);
  font-size: 14px;
  font-weight: 550;
  text-decoration: none;
}
.track-link::after {
  content: " →";
}
.track-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
@media (max-width: 820px) {
  .panel-grid {
    grid-template-columns: 1fr;
  }
}
.r-related {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  padding: 30px 0 70px;
  border-top: 1px solid var(--r-line);
}
.r-related > span {
  color: var(--r-muted);
  margin-right: auto;
  font-size: 12px;
}

/* Self-playing visual stories. No step selection is needed to follow them. */
.r-text-link {
  color: var(--r-blue);
  text-decoration: none;
  font-size: 14px;
  font-weight: 550;
}
.r-text-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.r-chapter-footer {
  padding-top: 20px;
  text-align: right;
}
.r-film {
  --film-progress: 0;
  --scene-progress: 1;
  margin: 0;
  border: 1px solid #e0e5ee;
  border-radius: 26px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 20px 60px -40px #254c8933;
}
.r-film-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 20px 28px;
  color: #7a8393;
  font-size: 11px;
}
.r-film-top > span:first-child {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #434e61;
  font-weight: 550;
}
.r-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #2565e8;
  border-radius: 50%;
}
.r-cinema {
  position: relative;
  padding: 44px 32px 34px;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 30%, #fff 5%, #f2f5fa 90%);
}
.r-film-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 96px;
  padding: 24px 32px 18px;
}
.r-film-story {
  display: flex;
  align-items: center;
  gap: 20px;
}
.r-scene-number {
  flex: 0 0 auto;
  color: #597398;
  font: 11px var(--r-mono);
}
.r-film-story p {
  font-size: clamp(17px, 2.2vw, 23px);
  font-weight: 550;
  letter-spacing: -0.035em;
  line-height: 1.3;
}
.r-motion-toggle {
  display: grid;
  place-items: center;
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid #dfe5ef;
  border-radius: 50%;
  background: #f7f9fc;
  color: #55657e;
  cursor: pointer;
}
.r-motion-toggle:hover {
  background: #e9effa;
}
.r-motion-toggle svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}
.r-play-icon {
  display: none;
}
.r-is-paused .r-pause-icon {
  display: none;
}
.r-is-paused .r-play-icon {
  display: block;
}
.r-film-progress {
  list-style: none;
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 32px;
}
.r-film-progress li {
  flex: 1;
  height: 2px;
  background: #e7ecf4;
  overflow: hidden;
}
.r-film-progress li span {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}
.r-film-progress i {
  display: block;
  width: 100%;
  height: 100%;
  background: #386fdf;
  transform: scaleX(0);
  transform-origin: left;
}
.r-film-progress .is-past i {
  transform: scaleX(1);
}
.r-film-progress .is-current i {
  transform: scaleX(var(--scene-progress));
}
.r-film figcaption {
  padding: 20px 32px 26px;
  color: #727b8b;
  font-size: 11px;
  line-height: 1.75;
}
.r-compile-scene {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) 115px minmax(0, 0.85fr);
  align-items: center;
  min-height: 350px;
}
.r-source-window {
  position: relative;
  border: 1px solid #d8e0ee;
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 16px 35px -22px #29466a55;
  transform: perspective(1400px) rotateY(4deg);
}
.r-window-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 39px;
  padding: 0 14px;
  border-bottom: 1px solid #e8edf5;
  color: #75829a;
  font: 10px var(--r-mono);
  background: #fafbfe;
}
.r-window-dots {
  display: flex;
  gap: 4px;
}
.r-window-dots i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #d8dfec;
}
.r-editor-code {
  padding: 32px 12px 70px;
  font: 12px/2.5 var(--r-mono);
  white-space: nowrap;
  letter-spacing: -0.02em;
  color: #596376;
}
.r-editor-code em {
  display: inline-block;
  width: 22px;
  color: #bbc4d2;
  font-style: normal;
}
.r-editor-code span {
  color: #245ecd;
}
.r-editor-code b {
  font-weight: inherit;
}
.r-editor-status {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-top: 1px solid #edf0f6;
  font: 10px var(--r-mono);
  color: #8c99ae;
}
.r-editor-status i {
  width: 5px;
  height: 5px;
  background: #8a9dba;
  border-radius: 50%;
}
.r-error-pop {
  display: flex;
  align-items: center;
  gap: 10px;
  position: absolute;
  inset: auto 12px 46px;
  padding: 12px;
  border: 1px solid #f0c8ce;
  border-radius: 8px;
  background: #fff6f7;
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 0.7s,
    transform 0.7s;
}
.r-error-symbol {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #c54f66;
  color: white;
  font: 12px var(--r-mono);
}
.r-error-pop strong,
.r-error-pop small {
  display: block;
  font-size: 10px;
}
.r-error-pop strong {
  color: #91404f;
  font-weight: 550;
}
.r-error-pop small {
  color: #b77480;
  margin-top: 4px;
  font-size: 9px;
}
.r-error-pop > code {
  margin-left: auto;
  color: #b56e7a;
  font-size: 9px;
}
.r-fixed-pop {
  position: absolute;
  inset: auto 12px 50px;
  padding: 12px;
  font-size: 10px;
  color: #287b5d;
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 0.6s,
    transform 0.6s;
}
.r-fixed-pop > span {
  margin-right: 7px;
}
.r-build-bridge {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.r-engine {
  width: 69px;
  height: 69px;
  position: relative;
  display: flex;
  flex: 0 0 69px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 3px;
  background: #fff;
  border-radius: 18px;
  border: 1px solid #d9e2f1;
  box-shadow: 0 8px 22px -8px #4070c62b;
}
.r-engine strong {
  color: #3266c2;
  font:
    26px Georgia,
    serif;
}
.r-engine small {
  color: #99a8bd;
  font: 8px var(--r-mono);
}
.r-engine-orbit {
  position: absolute;
  inset: -7px;
  border-radius: 24px;
  border: 1px solid #4382f000;
  border-top-color: #4382f0;
  opacity: 0;
  animation: r-turn 3s linear infinite;
}
.r-wire {
  position: relative;
  height: 1px;
  flex: 1;
  background: #c3d2e9;
  overflow: hidden;
}
.r-wire i {
  display: block;
  position: absolute;
  width: 9px;
  height: 2px;
  background: #377df5;
  transform: translateX(-10px);
  opacity: 0;
  animation: r-packet 1.7s ease-in-out infinite;
}
.r-wire-out i {
  animation-delay: 0.8s;
}
.r-preview-window {
  position: relative;
  padding-bottom: 30px;
  border: 1px solid #dbe2ee;
  border-radius: 12px;
  overflow: hidden;
  background: #edf1f8;
  box-shadow: 0 16px 36px -24px #23467d55;
  transform: perspective(1400px) rotateY(-5deg);
}
.r-paper {
  position: relative;
  width: calc(100% - 52px);
  height: 255px;
  margin: 22px auto 0;
  padding: 29px 22px;
  background: #fff;
  box-shadow: 0 6px 14px #24385b12;
  opacity: 0;
  transform: translateY(22px) scale(0.94);
  transition:
    opacity 1s,
    transform 1.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.r-paper-overline {
  display: block;
  color: #9c9eab;
  font-size: 5px;
  letter-spacing: 0.12em;
}
.r-paper h3 {
  font:
    23px/1.2 Georgia,
    serif;
  margin-top: 10px;
  color: #303643;
}
.r-paper-author {
  display: block;
  margin-top: 6px;
  font:
    6px Georgia,
    serif;
  color: #8b91a0;
}
.r-paper-rule {
  height: 1px;
  background: #e4e6ec;
  margin: 19px 0;
}
.r-paper h4 {
  margin: 0 0 7px;
  font:
    600 9px Georgia,
    serif;
}
.r-paper p {
  font:
    7px Georgia,
    serif;
}
.r-paper-lines {
  display: grid;
  gap: 6px;
  margin-top: 14px;
}
.r-paper-lines i {
  height: 2px;
  background: #e3e6ed;
}
.r-paper-lines i:nth-child(3) {
  width: 78%;
}
.r-paper-lines i:last-child {
  width: 62%;
}
.r-paper-page {
  position: absolute;
  bottom: 13px;
  left: 50%;
  font:
    7px Georgia,
    serif;
  color: #959bad;
}
.r-preview-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  position: absolute;
  inset: 40px 0 0;
  justify-content: center;
  color: #a5b2c6;
  transition: opacity 0.7s;
}
.r-preview-empty > span {
  display: grid;
  place-items: center;
  border: 1px solid #d6deeb;
  border-radius: 6px;
  width: 48px;
  height: 62px;
  font: 12px var(--r-mono);
}
.r-preview-empty small {
  font-size: 9px;
}
.r-build-ok {
  position: absolute;
  bottom: 8px;
  right: 15px;
  color: #298364;
  font-size: 9px;
  opacity: 0;
  transition: opacity 0.5s 0.5s;
}
.r-artifacts {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  padding-top: 26px;
  color: #8695ac;
  font-size: 10px;
}
.r-artifacts span {
  display: flex;
  align-items: center;
  gap: 7px;
  transition: color 0.7s;
}
.r-artifacts i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #ccd7e7;
  transition: background 0.7s;
}
.r-after,
.r-status-error,
.r-status-fixed {
  display: none;
}
.r-film-compiler[data-phase="2"] .r-error-pop {
  opacity: 1;
  transform: none;
}
.r-film-compiler[data-phase="2"] .r-before {
  color: #b84562;
  text-decoration: underline wavy #d78698;
  text-underline-offset: 4px;
}
.r-film-compiler[data-phase="2"] .r-status-draft,
.r-film-compiler[data-phase="3"] .r-status-draft,
.r-film-compiler[data-phase="4"] .r-status-draft {
  display: none;
}
.r-film-compiler[data-phase="2"] .r-status-error {
  display: inline;
  color: #b6556b;
}
.r-film-compiler:is([data-phase="3"], [data-phase="4"]) .r-before {
  display: none;
}
.r-film-compiler:is([data-phase="3"], [data-phase="4"]) .r-after {
  display: inline;
  color: #217955;
}
.r-film-compiler:is([data-phase="3"], [data-phase="4"]) .r-fixed-pop {
  opacity: 1;
  transform: none;
}
.r-film-compiler:is([data-phase="3"], [data-phase="4"]) .r-status-fixed {
  display: inline;
  color: #2d8867;
}
.r-film-compiler:is([data-phase="1"], [data-phase="3"]) .r-engine-orbit,
.r-film-compiler:is([data-phase="1"], [data-phase="3"]) .r-wire i {
  opacity: 1;
}
.r-film-compiler[data-phase="4"] .r-paper {
  opacity: 1;
  transform: none;
}
.r-film-compiler[data-phase="4"] .r-preview-empty {
  opacity: 0;
}
.r-film-compiler[data-phase="4"] .r-build-ok {
  opacity: 1;
}
.r-film-compiler[data-phase="4"] .r-artifacts span {
  color: #557293;
}
.r-film-compiler[data-phase="4"] .r-artifacts i {
  background: #4a8cbd;
}

/* A request travels through a model, approved tools, and a return path. */
.r-film-ai .r-cinema {
  background: radial-gradient(
    ellipse at 50% 42%,
    #eef3ff 0%,
    #f9faff 65%,
    #f3f5fa 100%
  );
}
.r-ai-scene {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px minmax(0, 1fr);
  position: relative;
  align-items: center;
  min-height: 290px;
  padding-bottom: 55px;
}
.r-scene-label {
  display: block;
  color: #9aa6b9;
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.12em;
  margin-bottom: 22px;
}
.r-message {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 25px;
}
.r-person {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: #e4eaf5;
  color: #6f84a7;
  font-size: 11px;
}
.r-message p {
  max-width: 200px;
  font-size: 16px;
  font-weight: 550;
  line-height: 1.4;
  letter-spacing: -0.025em;
}
.r-context-stack {
  display: grid;
  gap: 8px;
}
.r-context-stack > div {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 12px;
  border: 1px solid #e0e6f0;
  border-radius: 10px;
  background: #ffffffc9;
  transition:
    transform 1s,
    border-color 1s;
}
.r-context-stack strong,
.r-context-stack small {
  display: block;
}
.r-context-stack strong {
  font-size: 10px;
  font-weight: 550;
  color: #58657b;
}
.r-context-stack small {
  font-size: 8px;
  color: #73839d;
  margin-top: 4px;
}
.r-context-icon {
  font: 9px var(--r-mono);
  color: #5f87d2;
}
.r-context-check {
  margin-left: auto;
  font-size: 9px;
  color: #7ca291;
}
.r-ai-center {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.r-model-core {
  position: relative;
  display: grid;
  place-items: center;
  width: 94px;
  height: 94px;
  margin: 10px 0 25px;
  background: linear-gradient(140deg, #fff, #e4ecfc);
  border: 1px solid #d3dff7;
  border-radius: 28px;
  box-shadow:
    0 12px 34px #5985d32b,
    inset 0 2px 5px #fff;
}
.r-model-core > span {
  font-size: 48px;
  line-height: 1;
  color: #3c72d8;
}
.r-model-orbit {
  position: absolute;
  inset: -15px;
  border: 1px solid #5681d120;
  border-top-color: #6d98e3;
  border-radius: 50%;
  animation: r-turn 8s linear infinite;
}
.r-orbit-two {
  inset: -24px;
  border-color: #5681d112;
  border-right-color: #6d98e3;
  border-top-color: #5681d112;
  animation-direction: reverse;
  animation-duration: 12s;
}
.r-ai-center > strong {
  font-size: 17px;
  font-weight: 550;
  letter-spacing: -0.04em;
}
.r-ai-center > small {
  margin-top: 6px;
  color: #8393ae;
  font-size: 8px;
}
.r-runtime {
  display: flex;
  gap: 6px;
  margin-top: 18px;
}
.r-runtime span {
  padding: 4px 7px;
  border: 1px solid #dce4f3;
  border-radius: 99px;
  color: #8a9ab5;
  font-size: 8px;
}
.r-ai-wire {
  position: absolute;
  top: 56px;
  height: 1px;
  width: 42px;
  background: #bed0ec;
  overflow: hidden;
}
.r-ai-wire-left {
  left: 0;
}
.r-ai-wire-right {
  right: 0;
}
.r-ai-wire i {
  display: block;
  width: 14px;
  height: 2px;
  background: #4980e5;
  animation: r-packet 2.4s ease-in-out infinite;
}
.r-ai-wire-right i {
  animation-delay: 1.1s;
}
.r-tool {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 13px;
  border: 1px solid #dfe5f0;
  border-radius: 10px;
  background: #ffffffbc;
  margin-bottom: 8px;
  transition:
    border-color 0.7s,
    box-shadow 0.7s,
    transform 0.7s,
    background 0.7s;
}
.r-tool-mark {
  color: #a5b2c9;
  font: 9px var(--r-mono);
}
.r-tool code {
  display: block;
  color: #63728c;
  font-size: 10px;
}
.r-tool small {
  display: block;
  color: #73839d;
  font-size: 9px;
  margin-top: 5px;
}
.r-tool b {
  margin-left: auto;
  color: #478c71;
  font-size: 10px;
  font-weight: 400;
  opacity: 0;
  transition: opacity 0.6s;
}
.r-approval {
  display: flex;
  gap: 6px;
  align-items: center;
  color: #7283a0;
  font-size: 8px;
  padding: 7px 3px;
  transition: color 0.7s;
}
.r-approval i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
}
.r-ai-return {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 60px;
}
.r-ai-return svg {
  width: 100%;
  height: 50px;
  overflow: visible;
}
.r-ai-return path {
  fill: none;
  stroke: #cbd8ee;
  stroke-width: 1;
}
.r-ai-return .r-return-trace {
  stroke: #5c8fe6;
  stroke-dasharray: 25 400;
  stroke-width: 2;
  animation: r-feedback 5s linear infinite;
  opacity: 0;
}
.r-ai-return > span {
  position: absolute;
  right: 12%;
  bottom: -4px;
  font-size: 9px;
  color: #879bbd;
}
.r-ai-evidence {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 64px;
  border: 1px solid #dfe6f3;
  border-radius: 12px;
  background: #ffffffd9;
  padding: 18px 22px;
  margin-top: 22px;
}
.r-evidence-icon {
  color: #6591de;
  font-size: 22px;
}
.r-evidence-messages p {
  display: none;
  color: #647897;
  font-size: 12px;
}
.r-evidence-messages ins {
  color: #368464;
  text-decoration: none;
  font-family: var(--r-mono);
}
.r-evidence-messages del {
  color: #bb7a88;
  font-family: var(--r-mono);
  margin-right: 10px;
}
.r-evidence-messages b {
  color: #368464;
  font-weight: 500;
}
.r-film-ai[data-phase="0"] .r-evidence-0,
.r-film-ai[data-phase="1"] .r-evidence-1,
.r-film-ai[data-phase="2"] .r-evidence-2,
.r-film-ai[data-phase="3"] .r-evidence-3,
.r-film-ai[data-phase="4"] .r-evidence-4 {
  display: block;
  animation: r-appear 0.7s both;
}
.r-film-ai[data-phase="0"] .r-context-stack > div {
  transform: translateY(-3px);
  border-color: #aabfe5;
}
.r-film-ai[data-phase="1"] [data-tool="0"],
.r-film-ai[data-phase="2"] [data-tool="1"],
.r-film-ai[data-phase="3"] [data-tool="2"] {
  border-color: #8daee8;
  background: #edf3ff;
  transform: translateX(-4px);
  box-shadow: 0 6px 14px #3a6bc80b;
}
.r-film-ai:is([data-phase="2"], [data-phase="3"], [data-phase="4"])
  [data-tool="0"]
  b,
.r-film-ai:is([data-phase="3"], [data-phase="4"]) [data-tool="1"] b,
.r-film-ai[data-phase="4"] [data-tool="2"] b {
  opacity: 1;
}
.r-film-ai[data-phase="2"] .r-approval {
  color: #ac7c35;
}
.r-film-ai:is([data-phase="3"], [data-phase="4"]) .r-return-trace {
  opacity: 1;
}

/* SVG positions, links, and travelling points share the same animation clock. */
.r-film-graph .r-cinema {
  padding-top: 26px;
  background: radial-gradient(
    ellipse at 50% 40%,
    #eaf1ff 0%,
    #f8faff 60%,
    #f2f5fa 100%
  );
}
.r-graph-origin {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
}
.r-bib-icon {
  display: grid;
  place-items: center;
  width: 35px;
  height: 43px;
  border: 1px solid #cddaf1;
  border-radius: 7px;
  background: #fff;
  color: #7191c9;
  font: 10px var(--r-mono);
}
.r-graph-origin strong {
  display: block;
  color: #556b8e;
  font-size: 12px;
  font-weight: 550;
}
.r-graph-origin small {
  display: block;
  color: #7184a3;
  font-size: 9px;
  margin-top: 4px;
}
.r-graph-svg {
  display: block;
  width: 100%;
  max-height: 360px;
  overflow: visible;
  margin: -8px auto 0;
}
.r-graph-edges path {
  fill: none;
  stroke: #779ce0;
  stroke-width: 1.5;
  opacity: 0.32;
  transition:
    opacity 1.3s,
    stroke-width 1.3s;
}
.r-graph-packets circle {
  fill: #5c89da;
  opacity: 0;
  transition: opacity 0.6s;
}
.r-node-disc {
  fill: #fff;
  stroke: #8aa9df;
  stroke-width: 1.5;
  transition:
    fill 1.2s,
    stroke 1.2s;
}
.r-node-halo {
  fill: #7a9edf09;
  stroke: #7a9edf15;
  stroke-width: 1;
  transition:
    fill 1.2s,
    stroke 1.2s;
}
.r-orbit-node text {
  text-anchor: middle;
  fill: #537ab9;
  font: 500 15px var(--r-mono);
  transition: fill 1s;
}
.r-orbit-node .r-orbit-label {
  fill: #5c7297;
  font:
    11px -apple-system,
    BlinkMacSystemFont,
    sans-serif;
}
.r-orbit-node .r-node-cited {
  fill: #638ad0;
  font:
    6px -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  letter-spacing: 0.1em;
  opacity: 0;
  transition: opacity 1s;
}
.r-unlinked-node .r-node-disc {
  stroke: #c1cbdc;
}
.r-unlinked-node text {
  fill: #abb7ca;
}
.r-relation-badge {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  min-height: 35px;
  color: #536f9b;
  font-size: 11px;
}
.r-relation-light {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #6490da;
}
.r-relation-badge > span:not(.r-relation-light) {
  display: none;
}
.r-film-graph[data-phase="0"] .r-relation-0,
.r-film-graph[data-phase="1"] .r-relation-1,
.r-film-graph[data-phase="2"] .r-relation-2,
.r-film-graph[data-phase="3"] .r-relation-3 {
  display: inline;
  animation: r-appear 0.9s both;
}
.r-film-graph[data-phase="0"] .r-graph-edges path {
  opacity: 0.08;
}
.r-film-graph[data-phase="1"]
  :is([data-relation="author"], [data-relation="both"]),
.r-film-graph[data-phase="2"]
  :is([data-relation="topic"], [data-relation="both"]),
.r-film-graph[data-phase="3"] .r-graph-edges path {
  opacity: 0.9;
  stroke-width: 2;
}
.r-film-graph.is-running:not([data-phase="0"]) .r-graph-packets circle {
  opacity: 0.8;
}
.r-film-graph[data-phase="3"] .r-cited-node .r-node-disc {
  fill: #336fe0;
  stroke: #336fe0;
}
.r-film-graph[data-phase="3"]
  .r-cited-node
  > text:not(.r-orbit-label):not(.r-node-cited) {
  fill: #fff;
}
.r-film-graph[data-phase="3"] .r-cited-node .r-node-halo {
  fill: #5789e510;
  stroke: #5789e524;
}
.r-film-graph[data-phase="3"] .r-node-cited {
  opacity: 1;
}
.r-graph-summary {
  display: flex;
  justify-content: center;
  gap: 46px;
  margin-top: 24px;
  padding-top: 23px;
  border-top: 1px solid #dce5f4;
}
.r-graph-summary > div {
  display: flex;
  gap: 10px;
  align-items: center;
}
.r-graph-summary strong {
  color: #6183b9;
  font-size: 23px;
  font-weight: 450;
  letter-spacing: -0.05em;
}
.r-graph-summary span {
  color: #6b7e9e;
  font-size: 9px;
}
.r-overview.is-running .r-overview-arrow {
  animation: r-arrow-glow 4s ease-in-out infinite;
}
.r-overview.is-running .r-overview-agent .r-agent-icon {
  animation: r-core-glow 4s ease-in-out infinite;
}
.r-film:not(.is-running) *,
.r-film:not(.is-running) *::before,
.r-film:not(.is-running) *::after {
  animation-play-state: paused !important;
}
@keyframes r-turn {
  to {
    transform: rotate(360deg);
  }
}
@keyframes r-packet {
  from {
    transform: translateX(-15px);
  }
  to {
    transform: translateX(75px);
  }
}
@keyframes r-feedback {
  to {
    stroke-dashoffset: -425;
  }
}
@keyframes r-appear {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
@keyframes r-arrow-glow {
  0%,
  100% {
    opacity: 0.4;
  }
  50% {
    opacity: 1;
    color: #407adc;
  }
}
@keyframes r-core-glow {
  0%,
  100% {
    box-shadow: 0 0 0 0 #1f5fe012;
  }
  50% {
    box-shadow: 0 0 0 9px #1f5fe009;
  }
}

@media (max-width: 1000px) {
  .r-cinema {
    padding-inline: 22px;
  }
  .r-compile-scene {
    grid-template-columns: minmax(0, 1.2fr) 85px minmax(0, 0.85fr);
  }
  .r-editor-code {
    font-size: 9px;
  }
  .r-editor-code em {
    width: 16px;
  }
  .r-paper {
    width: calc(100% - 32px);
    padding-inline: 16px;
  }
  .r-ai-scene {
    grid-template-columns: minmax(0, 1fr) 170px minmax(0, 1fr);
  }
  .r-ai-wire {
    width: 22px;
  }
  .r-tool {
    gap: 8px;
    padding-inline: 9px;
  }
  .r-tool code {
    font-size: 8px;
  }
  .r-tool small {
    font-size: 8px;
  }
  .r-tool-mark {
    font-size: 8px;
  }
  .r-message p {
    font-size: 14px;
  }
  .r-context-stack > div {
    gap: 7px;
    padding-inline: 8px;
  }
  .r-context-stack small {
    font-size: 7px;
  }
  .r-context-check {
    display: none;
  }
  .r-notes {
    gap: 24px;
  }
}
@media (max-width: 680px) {
  .r-page {
    width: calc(100% - 32px);
  }
  .r-hero {
    padding: 54px 0 44px;
  }
  .r-hero .r-lede {
    font-size: 17px;
  }
  .r-jump {
    gap: 8px;
  }
  .r-jump a {
    padding: 9px 12px;
    gap: 10px;
    font-size: 11px;
  }
  .r-overview {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 24px;
    margin-top: 34px;
  }
  .r-overview-arrow {
    line-height: 1;
    transform: rotate(90deg);
  }
  .r-overview-systems {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .r-overview-systems > span {
    padding: 12px;
    font-size: 12px;
  }
  .r-overview small {
    font-size: 11px;
  }
  .r-chapter {
    padding: 46px 0 32px;
  }
  .r-chapter-heading > p:last-child {
    font-size: 16px;
  }
  .r-film {
    border-radius: 20px;
  }
  .r-film-top {
    padding: 17px 18px;
    font-size: 10px;
    flex-wrap: wrap;
    gap: 6px;
  }
  .r-film-top > span:last-child {
    font-size: 9px;
  }
  .r-cinema {
    padding: 24px 18px;
  }
  .r-compile-scene {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .r-source-window,
  .r-preview-window {
    transform: none;
  }
  .r-editor-code {
    font-size: 9px;
    padding: 18px 10px 58px;
    line-height: 2.2;
  }
  .r-window-bar {
    height: 31px;
    font-size: 9px;
  }
  .r-editor-status {
    font-size: 8px;
  }
  .r-error-pop {
    inset-inline: 8px;
    gap: 7px;
    padding: 9px;
    bottom: 36px;
  }
  .r-error-pop > code {
    display: none;
  }
  .r-error-pop strong {
    font-size: 9px;
  }
  .r-error-pop small {
    font-size: 8px;
  }
  .r-fixed-pop {
    bottom: 37px;
    font-size: 9px;
  }
  .r-build-bridge {
    height: 80px;
  }
  .r-engine {
    flex-basis: 49px;
    width: 49px;
    height: 49px;
    border-radius: 14px;
    z-index: 1;
  }
  .r-engine strong {
    font-size: 21px;
  }
  .r-engine small {
    font-size: 7px;
  }
  .r-engine-orbit {
    border-radius: 20px;
    inset: -5px;
  }
  .r-wire {
    position: absolute;
    top: 0;
    bottom: 50%;
    left: 50%;
    width: 1px;
    height: auto;
  }
  .r-wire-out {
    top: 50%;
    bottom: 0;
  }
  .r-wire i {
    width: 1px;
    height: 10px;
    animation-name: r-packet-down;
  }
  .r-preview-window {
    width: 80%;
    max-width: 260px;
    margin: auto;
    padding-bottom: 23px;
  }
  .r-paper {
    height: 211px;
    width: calc(100% - 36px);
    margin-top: 16px;
    padding: 24px 20px;
  }
  .r-paper h3 {
    font-size: 21px;
  }
  .r-preview-empty small {
    font-size: 8px;
  }
  .r-artifacts {
    gap: 9px 16px;
    padding-top: 20px;
    font-size: 8px;
  }
  .r-artifacts i {
    width: 4px;
    height: 4px;
  }
  .r-film-bottom {
    min-height: 100px;
    padding: 22px 18px 18px;
  }
  .r-film-story {
    flex-direction: column;
    align-items: flex-start;
    gap: 9px;
  }
  .r-scene-number {
    font-size: 9px;
  }
  .r-film-story p {
    font-size: 20px;
  }
  .r-motion-toggle {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
  }
  .r-film-progress {
    padding-inline: 18px;
  }
  .r-film figcaption {
    padding: 18px;
    font-size: 10px;
  }
  .r-ai-scene {
    grid-template-columns: 1fr;
    padding: 0;
  }
  .r-ai-input {
    display: grid;
    grid-template-columns: 1fr;
  }
  .r-scene-label {
    font-size: 8px;
    margin-bottom: 14px;
  }
  .r-message {
    margin-bottom: 15px;
  }
  .r-message p {
    font-size: 16px;
    max-width: none;
  }
  .r-person {
    width: 26px;
    height: 26px;
    font-size: 10px;
  }
  .r-context-stack {
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }
  .r-context-stack > div {
    padding: 10px 8px;
    gap: 6px;
  }
  .r-context-icon {
    font-size: 8px;
  }
  .r-context-stack strong {
    font-size: 8px;
  }
  .r-context-stack small {
    font-size: 7px;
    line-height: 1.4;
  }
  .r-ai-center {
    margin: 32px 0 28px;
  }
  .r-model-core {
    width: 68px;
    height: 68px;
    border-radius: 20px;
    margin: 10px 0 20px;
  }
  .r-model-core > span {
    font-size: 35px;
  }
  .r-model-orbit {
    inset: -10px;
  }
  .r-orbit-two {
    inset: -18px;
  }
  .r-ai-center > strong {
    font-size: 15px;
  }
  .r-runtime {
    margin-top: 10px;
  }
  .r-ai-wire {
    top: 38px;
    width: calc(50% - 63px);
  }
  .r-tool {
    padding: 12px;
    gap: 10px;
    margin-bottom: 7px;
  }
  .r-tool code {
    font-size: 10px;
  }
  .r-tool small {
    font-size: 9px;
  }
  .r-tool-mark {
    font-size: 9px;
  }
  .r-approval {
    font-size: 8px;
  }
  .r-ai-return {
    display: none;
  }
  .r-ai-evidence {
    padding: 14px 12px;
    margin-top: 16px;
    min-height: 73px;
    gap: 10px;
  }
  .r-evidence-messages p {
    font-size: 10px;
    line-height: 1.6;
  }
  .r-graph-svg {
    width: 100%;
    max-width: none;
    height: auto;
    min-height: 260px;
    margin: 5px auto 0;
  }
  .r-orbit-node .r-orbit-label {
    display: none;
  }
  .r-orbit-node text {
    font-size: 22px;
  }
  .r-orbit-node .r-node-cited {
    font-size: 9px;
  }
  .r-relation-badge {
    min-height: 45px;
    text-align: center;
    line-height: 1.6;
    font-size: 10px;
  }
  .r-relation-light {
    flex-shrink: 0;
  }
  .r-graph-summary {
    gap: 14px;
    justify-content: space-between;
    margin-top: 16px;
    padding-top: 18px;
  }
  .r-graph-summary > div {
    flex-direction: column;
    align-items: flex-start;
    gap: 7px;
    flex: 1;
  }
  .r-graph-summary span {
    font-size: 8px;
    line-height: 1.5;
  }
  .r-closing {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    margin-top: 18px;
    padding-top: 32px;
  }
  .r-notes {
    grid-template-columns: 1fr;
    padding: 32px 0;
    gap: 30px;
  }
  .r-related {
    gap: 18px;
  }
  .r-related > span {
    width: 100%;
  }
}
@keyframes r-packet-down {
  from {
    transform: translateY(-10px);
  }
  to {
    transform: translateY(45px);
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .r-page *,
  .r-page *::before,
  .r-page *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* Reveal the source and draw the relationships as the story advances. */
.r-film-compiler.is-running[data-phase="0"] .r-editor-code > div {
  animation: r-source-line 0.7s steps(28, end) both;
}
.r-film-compiler[data-phase="0"] .r-editor-code > div:nth-child(2) {
  animation-delay: 0.35s;
}
.r-film-compiler[data-phase="0"] .r-editor-code > div:nth-child(3) {
  animation-delay: 0.7s;
}
.r-film-compiler[data-phase="0"] .r-editor-code > div:nth-child(4) {
  animation-delay: 1.05s;
}
.r-film-compiler[data-phase="0"] .r-editor-code > div:nth-child(5) {
  animation-delay: 1.4s;
}
.r-graph-edges path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition:
    opacity 1.3s,
    stroke-width 1.3s,
    stroke-dashoffset 1.6s cubic-bezier(0.2, 0.65, 0.25, 1);
}
.r-film-graph[data-phase="1"]
  :is([data-relation="author"], [data-relation="both"]),
.r-film-graph[data-phase="2"]
  :is([data-relation="topic"], [data-relation="both"]),
.r-film-graph[data-phase="3"] .r-graph-edges path {
  stroke-dashoffset: 0;
}
@keyframes r-source-line {
  from {
    clip-path: inset(0 100% 0 0);
  }
  to {
    clip-path: inset(0);
  }
}