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#ai-design-iteration-study .deck-nav {border:0;background:#f2f1ee;grid-template-columns:44px minmax(66px,auto) 44px;}
#ai-design-iteration-study .deck-nav button:first-child,#ai-design-iteration-study .deck-nav button:last-child {border:0;}
#ai-design-iteration-study .is-player .is-play,#ai-design-iteration-study .is-player .replay-button {width:44px;height:44px;min-width:44px;padding:0;border:0;border-radius:50%;background:#f2f1ee;display:grid;place-items:center;}
#ai-design-iteration-study .is-play span {position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;}
#ai-design-iteration-study .is-play svg {width:18px;height:18px;fill:currentColor;}
#ai-design-iteration-study .is-chapter-nav {flex:0 0 auto;}
#ai-design-iteration-study .rule-change {background:#e5effa;border-color:#c5d9ee;}
#ai-design-iteration-study .rule-change small {color:#303030;}
#ai-design-iteration-study .candidate button,#ai-design-iteration-study .quantity input {border-color:#cecece;}
#ai-design-iteration-study button:focus-visible,#ai-design-iteration-study input:focus-visible,#ai-design-iteration-study .lightbox-trigger:focus-visible {outline:3px solid #0071e3;outline-offset:4px;}
#ai-design-iteration-study .ledger-image-inspection {min-height:0;height:100%;display:flex;flex-direction:column;}
#ai-design-iteration-study .ledger-image-inspection[hidden] {display:none;}
#ai-design-iteration-study .ledger-image-inspection button {min-height:44px;padding:10px 18px;border:0;background:#eeece7;text-align:left;}
#ai-design-iteration-study .ledger-image-inspection img {display:block;width:100%;height:auto;max-width:none;}
#ai-design-iteration-study .ledger-image-scroll {overflow:auto;min-height:0;flex:1;overscroll-behavior:contain;padding:16px;}
@media(max-width:700px){
 #ai-design-iteration-study .is-layer {padding:8px;}
 #ai-design-iteration-study .is-dialog {height:calc(100dvh - 16px);max-height:calc(100dvh - 16px);}
 #ai-design-iteration-study .is-dialog-head {padding:16px;}
 #ai-design-iteration-study .is-dialog-head h3 {font-size:20px;}
 #ai-design-iteration-study .is-dialog-body {padding:12px 16px 20px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-dialog-body {padding:12px;}
 #ai-design-iteration-study .is-station {width:130px;padding:12px;}
 #ai-design-iteration-study .ledger-image-inspection img {width:760px;}
}
#ai-design-iteration-study .deck-nav button {width:44px;height:44px;}
/* Small text on blue-tinted fills needs a darker foreground than Primary Blue. */
#ai-design-iteration-study .review-beat-head>span,
#ai-design-iteration-study .close-step span {color:#005bb8;}
#ai-design-iteration-study .is-dialog:not([data-chapter="4"]):not([data-chapter="2"]) {height:auto;}
#ai-design-iteration-study .is-dialog:has(.ledger-image-inspection:not([hidden])) {height:min(820px,calc(100dvh - 40px));}
@media(max-width:700px){#ai-design-iteration-study .is-dialog:has(.ledger-image-inspection:not([hidden])) {height:calc(100dvh - 16px);}}

/* Direct image edges retain the artifact without another enclosing surface. */
#ai-design-iteration-study .artifact-lead .artifact-shot,
#ai-design-iteration-study .review-shot-frame .artifact-shot,
#ai-design-iteration-study .final-shot-frame .artifact-shot {
  border:1px solid #d5d7da;border-radius:10px;box-sizing:border-box;
}
#ai-design-iteration-study .is-demo-version[hidden] {display:none;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-scene-note {
  font-size:16px;font-weight:500;line-height:1.5;color:#303030;
  background:#edf4fc;border-radius:10px;padding:12px 16px;
  min-height:72px;display:flex;align-items:center;margin:14px 0 0!important;
}
@media(max-width:767px) {
  #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-scene-note {font-size:14px;min-height:88px;padding:10px 12px;}
}

/* Shared window geometry and alignment across all six stations. */
#ai-design-iteration-study .is-dialog,
#ai-design-iteration-study .is-dialog:not([data-chapter="4"]):not([data-chapter="2"]),
#ai-design-iteration-study .is-dialog:has(.ledger-image-inspection:not([hidden])) {
  --dialog-gutter:64px;
  width:min(80vw,1440px);max-width:none;
  height:80dvh;max-height:80dvh;
}
#ai-design-iteration-study .is-dialog-head {padding:20px var(--dialog-gutter);}
#ai-design-iteration-study .is-dialog-head h3 {margin:8px 0 0;}
#ai-design-iteration-study #stable-intro {padding:0 var(--dialog-gutter) 16px;}
#ai-design-iteration-study #stable-intro:empty {display:none;}
#ai-design-iteration-study .is-dialog-body,
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-dialog-body {
  width:100%;max-width:none;margin:0;padding:12px var(--dialog-gutter) 32px;
}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-scene-mount,
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-scene-note {max-width:660px;margin-left:auto!important;margin-right:auto!important;}
#ai-design-iteration-study .is-chapter-nav,
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-chapter-nav {padding:20px var(--dialog-gutter);}
#ai-design-iteration-study .is-chapter-nav button,
#ai-design-iteration-study .ledger-image-back {display:inline-flex;align-items:center;gap:8px;}
#ai-design-iteration-study .is-chapter-nav svg,
#ai-design-iteration-study .ledger-image-back svg,
.ledger-closing svg {width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none;}
.ledger-closing .link-bottom {display:inline-flex;align-items:center;gap:8px;}
#ai-design-iteration-study .loop-intro {max-width:700px;margin:0 0 28px;text-align:left;}
#ai-design-iteration-study .loop-return {border-color:#0071e3;color:#0071e3;}
#ai-design-iteration-study .loop-return::after {content:"";position:absolute;left:-6px;top:-1px;width:10px;height:10px;border-top:2px solid currentColor;border-left:2px solid currentColor;transform:rotate(45deg);}
#ai-design-iteration-study .artifact-lead .artifact-shot,
#ai-design-iteration-study .review-shot-frame .artifact-shot,
#ai-design-iteration-study .final-shot-frame .artifact-shot {border:0;border-radius:10px;box-shadow:0 2px 5px #152d4a18,0 10px 28px #152d4a12;}
/* Pale current-location state is distinct from the blue hover action. */
#ai-design-iteration-study .is-station {background:#f5f9ff;box-shadow:4px 7px 0 #ccdcec,8px 15px 20px #193e6512;}
#ai-design-iteration-study .is-station-prop i {background:#dbe8f6;}
#ai-design-iteration-study .is-station-prop i:last-child {background:#93b8df;}
#ai-design-iteration-study .is-station[data-current] {background:#dcecff;box-shadow:4px 7px 0 #aecceb,8px 15px 20px #193e6518;}
#ai-design-iteration-study .is-station:is(:hover,:focus-visible) {background:#0071e3;color:white;}
#ai-design-iteration-study .is-map-intro .heading-4-n {font:500 1.125rem/1.75rem 'Poppins',sans-serif;letter-spacing:normal;color:#005bb8;margin:0 0 .5rem;}
#ai-design-iteration-study .is-map-intro .heading-1-n {font:600 2rem/3rem 'Poppins',sans-serif;letter-spacing:normal;margin:0 0 2.5rem;color:#303030;}
#ai-design-iteration-study .is-map-intro .paragraph {font:400 1.125rem/1.875rem 'Poppins',sans-serif;max-width:none;color:#303030;padding:0;margin:0 0 .625rem;}
#ai-design-iteration-study .ledger-title-accent {color:#0071e3;}
@media(max-width:991px) {
 #ai-design-iteration-study .is-layer {padding:16px;}
 #ai-design-iteration-study .is-dialog,
 #ai-design-iteration-study .is-dialog:not([data-chapter="4"]):not([data-chapter="2"]),
 #ai-design-iteration-study .is-dialog:has(.ledger-image-inspection:not([hidden])) {--dialog-gutter:24px;width:calc(100vw - 32px);height:calc(100dvh - 32px);max-height:calc(100dvh - 32px);}
}
@media(max-width:700px) {
 #ai-design-iteration-study .is-layer {padding:8px;}
 #ai-design-iteration-study .is-dialog,
 #ai-design-iteration-study .is-dialog:not([data-chapter="4"]):not([data-chapter="2"]),
 #ai-design-iteration-study .is-dialog:has(.ledger-image-inspection:not([hidden])) {--dialog-gutter:20px;width:calc(100vw - 16px);height:calc(100dvh - 16px);max-height:calc(100dvh - 16px);}
 #ai-design-iteration-study .is-dialog-head {padding:20px var(--dialog-gutter);}
 #ai-design-iteration-study .is-dialog-body,#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-dialog-body {padding:8px var(--dialog-gutter) 24px;}
 #ai-design-iteration-study .is-chapter-nav,#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-chapter-nav {padding:16px var(--dialog-gutter);}
 #ai-design-iteration-study .loop-return {display:block;left:0;right:auto;top:18px;bottom:18px;width:20px;height:auto;border:2px solid #0071e3;border-right:0;border-radius:16px 0 0 16px;}
 #ai-design-iteration-study .loop-return::after {left:auto;right:0;top:-6px;transform:rotate(135deg);}
 #ai-design-iteration-study .is-map-intro .heading-1-n {font-size:1.75rem;line-height:2.5rem;}
}
/* Match the existing case typography breakpoints as well as desktop values. */
@media(max-width:767px) {
 #ai-design-iteration-study .is-map-intro .heading-1-n {font-size:1.5rem;line-height:2.25rem;}
}
@media(max-width:478px) {
 #ai-design-iteration-study .is-map-intro .heading-4-n {font-size:1rem;line-height:1.5rem;}
 #ai-design-iteration-study .is-map-intro .paragraph {font-size:1rem;line-height:1.625rem;}
}

/* Center one content group when it fits; auto margins collapse for scrolling. */
#ai-design-iteration-study .is-page .is-dialog .is-dialog-body {display:flex;flex-direction:column;}
#ai-design-iteration-study .is-content-group {flex:none;width:100%;margin-block:auto;}
#ai-design-iteration-study .is-dialog #stable-intro {max-width:820px;padding:0;margin:0 0 24px;}
#ai-design-iteration-study #stable-intro p {font-size:15px;line-height:1.65;color:var(--is-muted);}
#ai-design-iteration-study .station-subtitle {font:500 24px/1.3 'Poppins',sans-serif;letter-spacing:normal;margin:0 0 12px;text-align:left;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-player {padding:16px 0 0;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-dialog-stage {width:100%;}
@media(max-width:700px) {
 #ai-design-iteration-study .station-subtitle {font-size:22px;}
}

/* A single lead paragraph establishes the same reading start in every station. */
#ai-design-iteration-study .is-dialog .is-dialog-head {padding:32px var(--dialog-gutter) 24px;}
#ai-design-iteration-study .is-content-group {margin-block:0;}
#ai-design-iteration-study .station-intro,
#ai-design-iteration-study #stable-intro .station-intro {
  max-width:920px;margin:0 0 24px!important;font:500 18px/1.6 'Poppins',sans-serif;color:#454545;text-align:left;
}
#ai-design-iteration-study .is-dialog #stable-intro {max-width:none;margin:0;}
#ai-design-iteration-study .artifact-lead {display:block;max-width:740px;}
#ai-design-iteration-study .review-canvas {margin-left:0;margin-right:0;}
#ai-design-iteration-study .review-story {text-align:left;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-scene-note {min-height:48px;padding:10px 16px;}
#ai-design-iteration-study .is-chapter-nav button:disabled {opacity:.4;cursor:default;}
/* The process occupies two columns, following a clockwise rectangular path. */
#ai-design-iteration-study .loop-canvas {width:100%;max-width:680px;height:clamp(320px,40dvh,440px);margin:0 auto;padding:0;display:grid;grid-template-columns:1fr 1fr;grid-template-rows:repeat(3,1fr);gap:0;}
#ai-design-iteration-study .loop-canvas::before {display:none;}
#ai-design-iteration-study .loop-path {position:absolute;inset:0;width:100%;height:100%;overflow:visible;}
#ai-design-iteration-study .loop-canvas .process-step {display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;max-width:240px;justify-self:center;align-self:center;padding:8px 16px;background:#fff;}
#ai-design-iteration-study .loop-canvas .process-step:nth-of-type(1) {grid-area:1/1;}
#ai-design-iteration-study .loop-canvas .process-step:nth-of-type(2) {grid-area:1/2;}
#ai-design-iteration-study .loop-canvas .process-step:nth-of-type(3) {grid-area:2/2;}
#ai-design-iteration-study .loop-canvas .process-step:nth-of-type(4) {grid-area:3/2;}
#ai-design-iteration-study .loop-canvas .process-step:nth-of-type(5) {grid-area:3/1;}
#ai-design-iteration-study .loop-canvas .step-marker {width:36px;height:36px;margin:0 0 8px;font-size:16px;flex:none;}
#ai-design-iteration-study .loop-canvas .process-step p {font-size:12px;line-height:1.5;}
/* Shared blue action hierarchy, scoped to this case. */
#ai-design-iteration-study .candidate button,
#ai-design-iteration-study #reset-trial,
#ai-design-iteration-study .is-chapter-nav button:first-child,
#ai-design-iteration-study .is-player .is-play,
#ai-design-iteration-study .is-player .replay-button {background:#eaf3ff;color:#005bb8;border-color:#c8ddf5;}
#ai-design-iteration-study #show-choice {background:#0071e3;border-color:#0071e3;color:#fff;}
#ai-design-iteration-study .attention {outline-color:#0071e3;}
@media(max-width:700px) {
 #ai-design-iteration-study .station-intro,#ai-design-iteration-study #stable-intro .station-intro {font-size:16px;margin-bottom:20px!important;}
 #ai-design-iteration-study .loop-canvas {height:440px;}
 #ai-design-iteration-study .loop-canvas .process-step {padding:8px;max-width:155px;}
}

/* Keep the lead at the top; center only the artifact in the remaining space. */
#ai-design-iteration-study .is-dialog .is-dialog-head {padding-bottom:12px;}
#ai-design-iteration-study .station-intro,
#ai-design-iteration-study #stable-intro .station-intro {font-weight:400;}
#ai-design-iteration-study .is-dialog:is([data-chapter="0"],[data-chapter="2"],[data-chapter="3"]) .is-content-group {
 display:flex;flex-direction:column;flex:1 0 auto;
}
#ai-design-iteration-study .is-dialog:is([data-chapter="0"],[data-chapter="3"]) .station-visual-group,
#ai-design-iteration-study .is-dialog:is([data-chapter="0"],[data-chapter="3"]) .is-dialog-stage,
#ai-design-iteration-study .is-dialog:is([data-chapter="0"],[data-chapter="3"]) .is-general-scene {
 display:flex;flex-direction:column;flex:1 0 auto;
}
#ai-design-iteration-study .is-dialog:is([data-chapter="0"],[data-chapter="3"]) .station-intro {flex:none;}
#ai-design-iteration-study .is-dialog[data-chapter="0"] .artifact-lead {width:100%;margin-block:auto;flex:none;}
#ai-design-iteration-study .is-dialog[data-chapter="3"] .loop-canvas {margin-block:auto;flex:none;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .station-visual-group {display:flex;flex-direction:column;justify-content:center;flex:1 0 auto;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-dialog-stage {flex:none;}
#ai-design-iteration-study .is-player .deck-nav {background:#eaf3ff;color:#005bb8;}
#ai-design-iteration-study .is-player .deck-nav button {background:transparent;color:inherit;}
#ai-design-iteration-study .is-player .deck-nav .is-count {color:inherit;}
#ai-design-iteration-study .is-lost {background:#eaf3ff;color:#005bb8;}
#ai-design-iteration-study .rule-change small {font-size:14px;}

/* Shared blue emphasis retains readable map surfaces in every state. */
#ai-design-iteration-study .is-lost {border-left-color:#0071e3;}
#ai-design-iteration-study .close-thesis {background:#0071e3;color:#fff;}
#ai-design-iteration-study .close-thesis em {color:inherit;}
#ai-design-iteration-study .is-dialog-head .is-eyebrow {display:block;font:500 18px/28px 'Poppins',sans-serif;letter-spacing:normal;color:#005bb8;margin-bottom:8px;}
#ai-design-iteration-study .is-station[data-current],
#ai-design-iteration-study .is-station:is(:hover,:focus-visible) {background:#f5f9ff;color:#303030;border-color:#0071e3;outline:1px solid #0071e3;}
#ai-design-iteration-study .is-station:is(:hover,:focus-visible) small,
#ai-design-iteration-study .is-station:is(:hover,:focus-visible) em {color:#595959;}
#ai-design-iteration-study .is-station:is(:hover,:focus-visible) .is-station-prop i {background:#dbe8f6;}
#ai-design-iteration-study .is-station:is(:hover,:focus-visible) .is-station-prop i:last-child {background:#93b8df;}

#ai-design-iteration-study .is-dialog-head .content-subhead {display:block;margin:0 0 8px;}
#ai-design-iteration-study .is-group-head > span:first-child {display:flex;gap:20px;flex-wrap:wrap;}

#ai-design-iteration-study .loop-artwork {margin:auto;max-width:100%;width:min(100%,calc(92dvh - 299px));flex:none;}
#ai-design-iteration-study .loop-artwork img {display:block;width:100%;height:auto;background:#fff;}
@media(max-width:700px) {#ai-design-iteration-study .loop-artwork {width:100%;}}

/* First-visit cue stays attached to the map entry point. */
#ai-design-iteration-study .is-start-badge {position:absolute;top:-14px;right:10px;padding:5px 11px;border-radius:999px;background:#0071e3;color:#fff;font:500 12px/1.4 'Poppins',sans-serif;white-space:nowrap;box-shadow:0 2px 6px #0071e326;}

/* The fast reading path exposes the decisions before optional exploration. */
#ai-design-iteration-study .is-map-intro .heading-1-n {margin-bottom:20px;}
#ai-design-iteration-study .is-map-intro .ledger-thesis {max-width:780px;}
#ai-design-iteration-study .ledger-context {max-width:820px;font:400 15px/1.7 'Poppins',sans-serif;color:#555;margin:14px 0 8px;padding:0;}
#ai-design-iteration-study .ledger-role {font:400 13px/1.6 'Poppins',sans-serif;color:#555;margin:0;padding:0;}
#ai-design-iteration-study .ledger-quick-read {padding:20px 24px 0;}
#ai-design-iteration-study .ledger-quick-read h2 {font:500 14px/1.5 'Poppins',sans-serif;color:#555;margin:0 0 14px;}
#ai-design-iteration-study .ledger-quick-read ol {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;list-style:none;margin:0;padding:0;}
#ai-design-iteration-study .ledger-quick-read li {padding-top:16px;border-top:1px solid #c8d6e5;min-width:0;}
#ai-design-iteration-study .ledger-quick-read h3 {font:600 16px/1.5 'Poppins',sans-serif;margin:0 0 8px;}
#ai-design-iteration-study .ledger-quick-read li p {font:400 14px/1.65 'Poppins',sans-serif;margin:0;}
#ai-design-iteration-study .ledger-quick-read button,
#ai-design-iteration-study .ledger-rule button {border:0;background:transparent;color:#005bb8;padding:10px 0;min-height:44px;text-align:left;font:500 13px/1.5 'Poppins',sans-serif;cursor:pointer;}
#ai-design-iteration-study .ledger-quick-read button span,
#ai-design-iteration-study .ledger-rule button span {display:inline-block;margin-left:4px;transition:transform 180ms ease-out;}
#ai-design-iteration-study .ledger-quick-read button:hover span,
#ai-design-iteration-study .ledger-rule button:hover span {transform:translate(2px,-2px);}
#ai-design-iteration-study .ledger-explore-help {font:400 13px/1.6 'Poppins',sans-serif;color:#555;margin:12px 0 0;}
#ai-design-iteration-study :is(.ledger-quick-read,.ledger-rule,.review-detail-tabs) button:focus-visible,
#ai-design-iteration-study .review-full-trail summary:focus-visible {outline:2px solid #005bb8;outline-offset:4px;}

/* Playback is explicitly started, with controls outside the scroll container. */
#ai-design-iteration-study .is-dialog[data-chapter="2"] > .is-player {display:flex;flex:none;padding:10px var(--dialog-gutter);border-top:1px solid #e2e8ef;background:#fff;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] > .is-player[hidden] {display:none;}
#ai-design-iteration-study .replay-help {font:400 13px/1.6 'Poppins',sans-serif;color:#555;margin:0 0 14px;}
#ai-design-iteration-study #stable-intro .station-intro {margin-bottom:8px!important;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .station-visual-group {flex:1 0 auto;}

/* Text carries the loop at every size; no small raster labels to decipher. */
#ai-design-iteration-study .ledger-loop {list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:22px;}
#ai-design-iteration-study .ledger-loop li {position:relative;min-width:0;}
#ai-design-iteration-study .loop-number {display:grid;place-items:center;width:32px;height:32px;border:1px solid #a5c3e2;border-radius:50%;font:500 14px/1 'Poppins',sans-serif;color:#005bb8;margin-bottom:12px;}
#ai-design-iteration-study .ledger-loop li:not(:last-child)::after {content:'→';position:absolute;top:4px;left:44px;right:0;text-align:right;color:#005bb8;font-size:18px;}
#ai-design-iteration-study .ledger-loop h4 {font:600 15px/1.4 'Poppins',sans-serif;margin:0 0 8px;}
#ai-design-iteration-study .ledger-loop h4 small {display:block;margin-top:4px;font:400 12px/1.5 'Poppins',sans-serif;color:#005bb8;}
#ai-design-iteration-study .ledger-loop p {font:400 13px/1.6 'Poppins',sans-serif;margin:0;}
#ai-design-iteration-study .loop-repeat {font:400 13px/1.6 'Poppins',sans-serif;color:#005bb8;margin:20px 0 24px;}
#ai-design-iteration-study .loop-repeat span {font-size:20px;vertical-align:middle;margin-right:6px;}
#ai-design-iteration-study .ledger-rule {padding:20px 0 0;border-top:1px solid #c8d6e5;max-width:780px;}
#ai-design-iteration-study .ledger-rule h4 {font:600 15px/1.5 'Poppins',sans-serif;margin:0 0 6px;}
#ai-design-iteration-study .ledger-rule h4 small {font-weight:400;font-size:12px;color:#555;margin-left:8px;}
#ai-design-iteration-study .ledger-rule p {font:400 14px/1.65 'Poppins',sans-serif;margin:0 0 16px;max-width:70ch;}

/* Same-scale detail crops keep the visual judgment close to its evidence. */
#ai-design-iteration-study .review-detail-tabs {display:flex;gap:8px;flex-wrap:wrap;margin:0 0 12px;}
#ai-design-iteration-study .review-detail-tabs button {min-height:44px;padding:10px 14px;border:1px solid #c8d6e5;border-radius:7px;background:#fff;color:#303030;font:500 13px/1.4 'Poppins',sans-serif;cursor:pointer;}
#ai-design-iteration-study .review-detail-tabs button[aria-pressed="true"] {background:#eaf3ff;border-color:#0071e3;color:#005bb8;}
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#ai-design-iteration-study .review-detail-pair {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
#ai-design-iteration-study .review-detail-pair figure {margin:0;min-width:0;}
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#ai-design-iteration-study .review-detail-crop .artifact-shot {position:absolute;left:0;top:0;width:210.526316%;max-width:none;height:auto;border-radius:0;transform:translate(var(--crop-x),var(--crop-y));}
#ai-design-iteration-study .review-detail-before {--crop-x:-2.5%;--crop-y:-10.332951%;}
#ai-design-iteration-study .review-detail-after {--crop-x:-2.5%;--crop-y:-7.964602%;}
#ai-design-iteration-study [data-detail="card"] .review-detail-crop,
#ai-design-iteration-study [data-detail="group"] .review-detail-crop {aspect-ratio:760 / 180;}
#ai-design-iteration-study [data-detail="card"] .review-detail-before {--crop-x:-32.5%;--crop-y:-31.572905%;}
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#ai-design-iteration-study [data-detail="group"] .review-detail-before {--crop-x:-32.5%;--crop-y:-66.016073%;}
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#ai-design-iteration-study .review-evidence {font:400 12px/1.6 'Poppins',sans-serif;color:#555;margin:14px 0 24px;}
#ai-design-iteration-study .review-full-trail {border-top:1px solid #c8d6e5;}
#ai-design-iteration-study .review-full-trail summary {font:500 14px/1.6 'Poppins',sans-serif;cursor:pointer;padding:16px 0;min-height:44px;}
#ai-design-iteration-study .review-full-trail .review-beat:first-child {padding-top:12px;}
@media(max-width:991px) {
 #ai-design-iteration-study .ledger-loop {grid-template-columns:1fr;gap:18px;}
 #ai-design-iteration-study .ledger-loop li {display:flex;gap:14px;}
 #ai-design-iteration-study .loop-number {flex:none;margin:0;}
 #ai-design-iteration-study .ledger-loop li:not(:last-child)::after {content:'↓';left:0;right:auto;top:35px;width:32px;text-align:center;font-size:14px;}
 #ai-design-iteration-study .ledger-loop h4 small {display:inline;margin-left:8px;}
 #ai-design-iteration-study .ledger-loop h4 {margin-bottom:4px;}
}
@media(max-width:700px) {
 #ai-design-iteration-study .ledger-quick-read {padding:16px 24px 0;}
 #ai-design-iteration-study .ledger-quick-read ol {grid-template-columns:1fr;gap:16px;}
 #ai-design-iteration-study .ledger-quick-read li {padding-top:12px;}
 #ai-design-iteration-study .ledger-quick-read h3 {margin-bottom:4px;}
 #ai-design-iteration-study .review-detail-pair {grid-template-columns:1fr;gap:16px;}
 #ai-design-iteration-study .ledger-rule h4 small {display:block;margin-left:0;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] > .is-player {padding-block:8px;}
}
@media(min-width:992px) and (max-height:760px) {
 #ai-design-iteration-study .is-dialog,
 #ai-design-iteration-study .is-dialog:not([data-chapter="4"]):not([data-chapter="2"]),
 #ai-design-iteration-study .is-dialog:has(.ledger-image-inspection:not([hidden])) {height:calc(100dvh - 32px);max-height:calc(100dvh - 32px);}
}
@media(prefers-reduced-motion:reduce) {
 #ai-design-iteration-study .ledger-quick-read button span,
 #ai-design-iteration-study .ledger-rule button span,
 #ai-design-iteration-study .ledger-quick-read button:hover span,
 #ai-design-iteration-study .ledger-rule button:hover span {transition:none;transform:none;}
}

#ai-design-iteration-study .review-detail-crop:focus-visible {outline:2px solid #005bb8;outline-offset:3px;}

/* Short desktop windows keep the complete replay beside its explanation. */
#ai-design-iteration-study .ledger-quick-read button svg,
#ai-design-iteration-study .ledger-rule button svg {display:block;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
@media(min-width:992px) and (max-height:850px) {
 #ai-design-iteration-study .is-dialog,
 #ai-design-iteration-study .is-dialog:not([data-chapter="4"]):not([data-chapter="2"]),
 #ai-design-iteration-study .is-dialog:has(.ledger-image-inspection:not([hidden])) {height:calc(100dvh - 40px);max-height:calc(100dvh - 40px);}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-dialog-head {padding-top:20px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-chapter-nav {padding-block:12px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-dialog-body {padding-top:8px;padding-bottom:16px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-content-group {display:grid;grid-template-columns:minmax(180px,.7fr) minmax(0,1.8fr);gap:24px;align-items:start;flex:none;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] #stable-intro .station-intro {font-size:16px;line-height:1.6;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .station-visual-group {display:block;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-stage {height:310px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-ledger {padding:12px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-ledger-title {font-size:14px;margin-bottom:8px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-purchase {padding:6px 8px;margin-bottom:8px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-scene-note {margin-top:8px!important;min-height:42px;padding:8px 10px;font-size:13px;}
}

/* The demonstration owns its pointer bounds, including after viewport changes. */
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-stage {overflow:clip;}
@media(max-width:991px) {
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-stage {height:310px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-ledger {padding:12px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-ledger-title {font-size:14px;margin-bottom:8px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-purchase {padding:6px 8px;margin-bottom:8px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-scene-note {margin-top:8px!important;min-height:42px;padding:8px 10px;font-size:13px;}
}

@media(min-width:992px) and (max-height:850px) {
 /* Purchase metadata is not part of the delete/restore sequence. */
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-purchase {display:none;}
}

@media(max-width:991px) and (max-height:760px) {
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-purchase {display:none;}
}

/* Owner review: narrative type follows DESIGN.md; artifacts retain their own UI. */
#ai-design-iteration-study .is-map-intro .heading-1-n {font:600 clamp(1.75rem,2.6vw,2.5rem)/1.3 'Poppins',sans-serif;max-width:24ch;}
#ai-design-iteration-study .ledger-context,
#ai-design-iteration-study .ledger-role,
#ai-design-iteration-study .ledger-quick-read li p,
#ai-design-iteration-study .ledger-explore-help {font:400 1.125rem/1.875rem 'Poppins',sans-serif;}
#ai-design-iteration-study .ledger-quick-read h2 {font:600 1.5rem/2.25rem 'Poppins',sans-serif;color:#303030;margin-bottom:24px;}
#ai-design-iteration-study .ledger-quick-read h3 {font:600 1.5rem/2.25rem 'Poppins',sans-serif;}
#ai-design-iteration-study .ledger-quick-read button {font-size:1rem;line-height:1.5;}
#ai-design-iteration-study .ledger-role {margin-top:12px;}
#ai-design-iteration-study .ledger-explore-help {margin-top:24px;}

/* Crops are non-interactive evidence, with one quiet edge and aligned labels. */
#ai-design-iteration-study .review-detail-pair {gap:24px;align-items:start;}
#ai-design-iteration-study .review-detail-pair figcaption {font:500 1rem/1.5 'Poppins',sans-serif;margin-bottom:12px;}
#ai-design-iteration-study .review-detail-crop {cursor:default;border:0;border-radius:0;box-shadow:0 0 0 1px #e2e4e7;}
#ai-design-iteration-study .review-detail-caption {font:400 1.125rem/1.875rem 'Poppins',sans-serif;max-width:62ch;}
#ai-design-iteration-study .review-detail-tabs button {font-size:1rem;}
#ai-design-iteration-study .review-evidence {font:400 1rem/1.6 'Poppins',sans-serif;max-width:70ch;margin:20px 0 24px;}
#ai-design-iteration-study .review-full-trail summary {font-size:1rem;}

/* A short viewport can scroll its scene without losing the explanation or controls. */
#ai-design-iteration-study .replay-compact-status,
#ai-design-iteration-study .replay-scroll-help {display:none;}
@media(max-width:991px) {
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-scene-note {display:none;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] > .is-player {display:block;}
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 #ai-design-iteration-study .replay-scroll-help {display:block;font:400 .875rem/1.5 'Poppins',sans-serif;color:#555;margin:0 0 8px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-chapter-nav {padding-block:12px;}
}
/* Group-header comparison keeps both shared fields and the group edge intact. */
#ai-design-iteration-study .review-detail-pair[data-detail="header"] {grid-template-columns:1fr;}
#ai-design-iteration-study [data-detail="header"] .review-detail-crop {aspect-ratio:1520 / 380;}
#ai-design-iteration-study [data-detail="header"] .review-detail-crop .artifact-shot {width:105.263158%;}
#ai-design-iteration-study [data-detail="header"] .review-detail-before {--crop-x:-2.5%;--crop-y:-10.332951%;}
#ai-design-iteration-study [data-detail="header"] .review-detail-after {--crop-x:-2.5%;--crop-y:-7.964602%;}

#ai-design-iteration-study .is-map-intro .ledger-context,
#ai-design-iteration-study .is-map-intro .ledger-role {font:400 1.125rem/1.875rem 'Poppins',sans-serif;}
#ai-design-iteration-study [data-detail="header"] .review-detail-before {aspect-ratio:1520 / 145;}
#ai-design-iteration-study [data-detail="header"] .review-detail-after {aspect-ratio:1520 / 260;}
#ai-design-iteration-study .review-detail-pair figcaption {text-align:left;}
#ai-design-iteration-study .review-context {margin-top:24px!important;}
#ai-design-iteration-study .is-map-intro .heading-1-n {max-width:none;}
#ai-design-iteration-study .ledger-quick-read h2 {font:600 2rem/3rem 'Poppins',sans-serif;}

/* Owner review: one reading rhythm, map first, optional depth through actions. */
#ai-design-iteration-study .is-map-intro {display:block;padding:28px 24px 8px;}
#ai-design-iteration-study .is-map-intro > div {max-width:940px;}
#ai-design-iteration-study .is-map-intro .ledger-thesis,
#ai-design-iteration-study .is-map-intro .ledger-context {max-width:none;width:100%;font:400 18px/30px 'Poppins',sans-serif;color:#303030;margin:0 0 8px;padding:0;}
#ai-design-iteration-study .is-map-intro .heading-4-n {font:500 16px/24px 'Poppins',sans-serif;margin-bottom:12px;}
#ai-design-iteration-study .is-map-intro .heading-1-n {margin-bottom:20px;}
#ai-design-iteration-study .ledger-quick-read {padding:24px;}
#ai-design-iteration-study .ledger-quick-read h2 {font:600 24px/36px 'Poppins',sans-serif;margin-bottom:20px;}
#ai-design-iteration-study .ledger-quick-read ol {gap:20px;}
#ai-design-iteration-study .ledger-quick-read li {display:flex;flex-direction:column;align-items:start;padding:24px;border:0;border-radius:12px;background:#fff;box-shadow:0 2px 5px #152d4a08,0 10px 28px #152d4a0d;}
#ai-design-iteration-study .ledger-quick-read h3 {font:600 24px/36px 'Poppins',sans-serif;}
#ai-design-iteration-study .ledger-quick-read li p {font:400 18px/30px 'Poppins',sans-serif;color:#303030;margin-bottom:12px;}
#ai-design-iteration-study .ledger-quick-read button {margin-top:auto;font:500 16px/24px 'Poppins',sans-serif;}
#ai-design-iteration-study .is-dialog-head h3 {font:600 24px/36px 'Poppins',sans-serif;}
#ai-design-iteration-study .case-evidence {margin:12px 0;}
#ai-design-iteration-study .case-evidence summary {display:list-item;cursor:pointer;font:500 16px/24px 'Poppins',sans-serif;color:#005bb8;min-height:44px;padding:10px 0;}
#ai-design-iteration-study .case-evidence p {font:400 18px/30px 'Poppins',sans-serif;color:#303030;padding:0 0 12px;}
#ai-design-iteration-study .case-evidence summary:focus-visible {outline:2px solid #005bb8;outline-offset:4px;}
#ai-design-iteration-study #stable-intro .station-intro {font:400 18px/30px 'Poppins',sans-serif;color:#303030;}

/* Three detail states preserve one stable before/after context. */
#ai-design-iteration-study .review-detail-tabs {display:flex;gap:8px;flex-wrap:wrap;margin:0 0 12px;}
#ai-design-iteration-study .review-detail-tabs button {font:500 16px/24px 'Poppins',sans-serif;}
#ai-design-iteration-study .review-study .review-detail-caption {font:500 18px/30px 'Poppins',sans-serif;margin:0 0 12px;min-height:30px;}
#ai-design-iteration-study .review-screenshot-pair {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));}
#ai-design-iteration-study .review-study figure {margin:0;min-width:0;}
#ai-design-iteration-study .review-study figcaption {font:400 16px/24px 'Poppins',sans-serif;color:#303030;margin:0 0 12px;text-align:left;}
#ai-design-iteration-study .final-shot-frame {aspect-ratio:1520 / 740;overflow:hidden;position:relative;}
#ai-design-iteration-study .final-shot-frame .artifact-shot {width:105.263158%;max-width:none;border-radius:0;transform:translate(-2.5%,-7.964602%);}
#ai-design-iteration-study .is-page .is-chapter-nav button {font:500 16px/24px 'Poppins',sans-serif;}
@media(max-width:700px) {
 #ai-design-iteration-study .ledger-quick-read ol {grid-template-columns:1fr;}
}

/* Context-preserving comparison: one original group and its outside action. */
#ai-design-iteration-study .review-screenshot-pair {max-width:100%;gap:28px;align-items:start;}
#ai-design-iteration-study .review-screenshot-pair figure {align-items:stretch;}
#ai-design-iteration-study .review-context-shot {position:relative;width:100%;padding:0;border-radius:10px;background:#fff;box-shadow:0 3px 10px #152d4a0a,0 14px 34px #152d4a12;overflow:hidden;--group-height:480;--source-height:1742;--action-top:1160;--action-height:90;--focus-top:0%;--focus-height:26%;}
#ai-design-iteration-study .context-after {--group-height:720;--source-height:2260;--action-top:1650;--action-height:115;--focus-height:34%;}
#ai-design-iteration-study .context-group,#ai-design-iteration-study .context-action {position:relative;overflow:hidden;}
#ai-design-iteration-study .context-group {aspect-ratio:1520 / var(--group-height);}
#ai-design-iteration-study .context-action {aspect-ratio:1520 / var(--action-height);}
#ai-design-iteration-study .review-context-shot img {position:absolute;display:block;max-width:none;width:105.263158%;height:auto;left:-2.631579%;top:0;transform:translateY(calc(-180 / var(--source-height) * 100%));}
#ai-design-iteration-study .context-action img {transform:translateY(calc(-1 * var(--action-top) / var(--source-height) * 100%));}
#ai-design-iteration-study [data-detail="card"] .review-context-shot {--focus-top:68%;--focus-height:16%;}
#ai-design-iteration-study [data-detail="card"] .context-after {--focus-top:71%;--focus-height:15%;}
#ai-design-iteration-study [data-detail="group"] .review-context-shot {--focus-top:84%;--focus-height:15%;}
#ai-design-iteration-study [data-detail="group"] .context-after {--focus-top:86%;--focus-height:13%;}
#ai-design-iteration-study .ledger-loop li:not(:last-child)::after {content:'';top:15px;left:46px;right:0;height:1px;background:#b7cce0;}
#ai-design-iteration-study .ledger-loop li:not(:last-child)::before {content:'';position:absolute;right:0;top:12px;width:6px;height:6px;border-right:1px solid #8eabc6;border-top:1px solid #8eabc6;transform:rotate(45deg);}
#ai-design-iteration-study .loop-repeat {display:flex;align-items:center;gap:8px;font:400 16px/24px 'Poppins',sans-serif;}
#ai-design-iteration-study .loop-repeat-icon,#ai-design-iteration-study .rule-link-icon {flex:none;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;vertical-align:middle;}
#ai-design-iteration-study .ledger-rule {max-width:none;}
#ai-design-iteration-study .ledger-rule > h4 {font:600 24px/36px 'Poppins',sans-serif;margin-bottom:16px;}
#ai-design-iteration-study .recovery-pair {display:grid;grid-template-columns:1fr 1fr;gap:20px;}
#ai-design-iteration-study .recovery-pair > div {padding:18px 20px;background:#f6f8fa;border-radius:10px;}
#ai-design-iteration-study .recovery-pair span,#ai-design-iteration-study .recovery-pair b {display:block;font:400 16px/24px 'Poppins',sans-serif;}
#ai-design-iteration-study .recovery-pair b {color:#005bb8;font-weight:500;margin:8px 0;}
#ai-design-iteration-study .recovery-pair p,#ai-design-iteration-study .ledger-rule .case-evidence p {font:400 18px/30px 'Poppins',sans-serif;margin:0;}
@media(max-width:700px) {
 #ai-design-iteration-study .review-screenshot-pair {grid-template-columns:1fr;gap:24px;}
 #ai-design-iteration-study .recovery-pair {gap:12px;}
 #ai-design-iteration-study .recovery-pair > div {padding:14px;}
}
@media(max-width:991px) {
 #ai-design-iteration-study .ledger-loop li:not(:last-child)::after {left:15px;right:auto;top:40px;bottom:-10px;width:1px;height:auto;}
 #ai-design-iteration-study .ledger-loop li:not(:last-child)::before {display:block;left:12px;right:auto;top:auto;bottom:-10px;transform:rotate(135deg);}
}
@media(max-width:700px) {
 #ai-design-iteration-study .review-study .review-detail-caption {min-height:60px;}
}

/* A shared header owns the title and lead; the artifact starts a separate group. */
#ai-design-iteration-study #adis-dialog .is-dialog-head {position:relative;padding:28px var(--dialog-gutter) 32px;}
#ai-design-iteration-study .is-dialog-head > div {min-width:0;width:100%;}
#ai-design-iteration-study .is-dialog-head h3 {padding-right:28px;}
#ai-design-iteration-study .is-dialog .is-dialog-head #stable-intro {max-width:none;padding:0;margin:12px 0 0!important;font:400 18px/30px 'Poppins',sans-serif;color:#303030;}
#ai-design-iteration-study .is-dialog-head .is-close {position:absolute;right:18px;top:20px;}
#ai-design-iteration-study .is-dialog .is-dialog-body,
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-dialog-body {padding-top:0;overflow-anchor:none;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-content-group {display:flex;flex-direction:column;align-items:stretch;gap:0;flex:1 0 auto;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .station-visual-group {display:flex;flex-direction:column;justify-content:flex-start;}
#ai-design-iteration-study .is-dialog {isolation:isolate;}

/* A disclosure link and adjacent utility action, distinct from selection tabs. */
#ai-design-iteration-study .compare-intro {display:flex;align-items:center;justify-content:flex-start;gap:4px;margin:0 0 24px;}
#ai-design-iteration-study #adis-dialog[data-chapter="1"] .compare-intro #show-choice {display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:8px 0;background:transparent;border:0;border-radius:0;color:#005bb8;font:500 16px/24px 'Poppins',sans-serif;}
#ai-design-iteration-study #show-choice > span {text-decoration:none;}
#ai-design-iteration-study #show-choice:hover > span {color:#004a98;}
#ai-design-iteration-study #show-choice svg {width:16px;height:16px;transition:transform 160ms ease-out;}
#ai-design-iteration-study #show-choice[aria-expanded="true"] svg {transform:rotate(180deg);}
#ai-design-iteration-study #reset-trial {display:inline-flex;align-items:center;justify-content:center;flex:none;width:44px;height:44px;margin:0;padding:10px;background:transparent;border:1px solid transparent;border-radius:8px;color:#555;}
#ai-design-iteration-study #reset-trial:hover {background:#f3f6fa;color:#005bb8;}
#ai-design-iteration-study #reset-trial svg {width:20px;height:20px;}
#ai-design-iteration-study .compare-intro svg {fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
#ai-design-iteration-study #show-choice:focus-visible,
#ai-design-iteration-study #reset-trial:focus-visible {outline:2px solid #005bb8;outline-offset:4px;}

/* Same-scale native pixels sit inside matching frames without stretching. */
#ai-design-iteration-study .review-context-shot {aspect-ratio:1520 / 835;display:flex;align-items:center;}
#ai-design-iteration-study .context-composite {position:relative;width:100%;flex:none;}
#ai-design-iteration-study .context-veil {position:absolute;inset:0;pointer-events:none;backdrop-filter:blur(1.25px);background:#ffffff30;mask-image:linear-gradient(to bottom,#000 0%,#000 max(0%,calc(var(--focus-top) - 2%)),transparent calc(var(--focus-top) + 2%),transparent calc(var(--focus-top) + var(--focus-height) - 2%),#000 calc(var(--focus-top) + var(--focus-height) + 2%),#000 100%);}
#ai-design-iteration-study [data-detail="header"] .review-context-shot {--focus-top:0%;--focus-height:34%;}
#ai-design-iteration-study [data-detail="header"] .context-after {--focus-height:35%;}
#ai-design-iteration-study [data-detail="card"] .review-context-shot {--focus-top:66%;--focus-height:34%;}
#ai-design-iteration-study [data-detail="card"] .context-after {--focus-top:70%;--focus-height:30%;}
#ai-design-iteration-study [data-detail="group"] .context-veil {mask-image:linear-gradient(to bottom,#000 0%,#000 62%,#666 68%,#666 80%,transparent 86%,transparent 100%);}
#ai-design-iteration-study .review-context-shot:hover .context-veil {backdrop-filter:none;background:transparent;}

/* The process has room to breathe. Its only example is the preceding station. */
#ai-design-iteration-study .is-dialog[data-chapter="3"] .ledger-loop {margin-block:auto;gap:24px;}
#ai-design-iteration-study .ledger-loop h4 {font:600 18px/27px 'Poppins',sans-serif;}
#ai-design-iteration-study .ledger-loop h4 small {font:400 14px/22px 'Poppins',sans-serif;margin-top:6px;}
#ai-design-iteration-study .ledger-loop p {font:400 16px/26px 'Poppins',sans-serif;}
#ai-design-iteration-study .loop-repeat {margin:24px 0 12px!important;}
#ai-design-iteration-study .loop-previous-cue {display:none;}
#ai-design-iteration-study .is-dialog[data-chapter="3"] .loop-previous-cue {display:flex;flex:none;align-items:center;gap:12px;padding:20px var(--dialog-gutter) 0;font:400 14px/22px 'Poppins',sans-serif;color:#555;}
#ai-design-iteration-study .loop-previous-cue svg {width:20px;height:30px;flex:none;fill:none;stroke:#005bb8;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}

/* The accepted artifact carries the right column; the conclusion spans both. */
#ai-design-iteration-study .close-layout {grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:24px 36px;align-items:center;}
#ai-design-iteration-study .close-step {grid-template-columns:24px minmax(0,1fr);gap:10px;padding:16px 0;}
#ai-design-iteration-study .close-step span {width:24px;height:24px;font-size:12px;}
#ai-design-iteration-study .close-step b {font:500 16px/24px 'Poppins',sans-serif;}
#ai-design-iteration-study .close-step p {font:400 14px/22px 'Poppins',sans-serif;margin-top:4px;}
#ai-design-iteration-study .close-thesis {grid-column:1/-1;margin:0;padding:18px 0 0;border-top:1px solid #d8e1eb;border-radius:0;background:transparent;color:#303030;font:400 18px/30px 'Poppins',sans-serif;}
#ai-design-iteration-study .close-thesis em {font-weight:500;}
#ai-design-iteration-study .final-context-shot {--group-height:720;--source-height:2260;--action-top:1650;--action-height:115;overflow:hidden;position:relative;border-radius:10px;background:#fff;box-shadow:0 3px 10px #152d4a0a,0 14px 34px #152d4a12;}
#ai-design-iteration-study .final-context-shot img {position:absolute;display:block;max-width:none;width:105.263158%;height:auto;left:-2.631579%;top:0;transform:translateY(calc(-180 / var(--source-height) * 100%));}
#ai-design-iteration-study .final-context-shot .context-action img {transform:translateY(calc(-1 * var(--action-top) / var(--source-height) * 100%));}
@media(max-width:991px) {
 #ai-design-iteration-study #adis-dialog .is-dialog-head {padding:24px var(--dialog-gutter) 28px;}
 #ai-design-iteration-study .is-dialog[data-chapter="3"] .ledger-loop {margin:0;gap:22px;}
 #ai-design-iteration-study .ledger-loop h4 small {display:inline;margin-left:8px;}
 #ai-design-iteration-study .is-dialog[data-chapter="3"] .loop-previous-cue {padding-top:12px;}
}
@media(max-width:700px) {
 #ai-design-iteration-study #adis-dialog .is-dialog-head {padding-top:20px;padding-bottom:28px;}
 #ai-design-iteration-study .is-dialog .is-dialog-head #stable-intro {margin-top:10px!important;}
 #ai-design-iteration-study .close-layout {grid-template-columns:1fr;gap:24px;}
 #ai-design-iteration-study .close-visual {grid-row:1;}
 #ai-design-iteration-study .review-study .review-detail-caption {min-height:60px;}
}
@media(prefers-reduced-motion:reduce) {
 #ai-design-iteration-study #show-choice svg {transition:none;}
}

/* This live region announces station changes without occupying visual space. */
#ai-design-iteration-study #adis-station-status {position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;}
/* Phase stays with the controls when the larger shared heading reduces scene space. */
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-scene-note {display:none;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .replay-compact-status {display:block;font:500 14px/22px 'Poppins',sans-serif;color:#303030;margin:0 0 4px;}
@media(min-width:992px) {
 #ai-design-iteration-study .is-dialog[data-chapter="2"] > .is-player {display:block;padding:8px var(--dialog-gutter);}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-ledger {padding:10px;}
 #ai-design-iteration-study .is-dialog[data-chapter="2"] .is-ledger-title {margin-bottom:6px;}
}

/* Replay context belongs above the controller divider, not inside the controls. */
#ai-design-iteration-study .is-dialog > .replay-compact-status {display:none;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] > .replay-compact-status {display:flex;flex:none;align-items:baseline;gap:10px;padding:10px var(--dialog-gutter) 12px;margin:0;font:400 14px/22px 'Poppins',sans-serif;}
#ai-design-iteration-study .replay-phase {flex:none;font-weight:600;padding:1px 7px;border-radius:4px;color:#005bb8;background:#eaf3ff;}
#ai-design-iteration-study [data-phase="before"] .replay-phase {color:#81520b;background:#fff0d9;}
#ai-design-iteration-study [data-phase="after"] .replay-phase {color:#126a50;background:#e2f4eb;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] > .is-player {display:flex;justify-content:center;padding:10px var(--dialog-gutter);}
#ai-design-iteration-study .role-accent {color:#005bb8;font-weight:600;}
#ai-design-iteration-study .compare-scope p {overflow:hidden;}
#ai-design-iteration-study .is-layer {will-change:auto;}

/* Owner-selected B: concise context beside the complete, proportionate form. */
#ai-design-iteration-study .baseline-context {display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);align-items:center;gap:36px;width:100%;margin-block:auto;}
#ai-design-iteration-study .baseline-points {display:grid;min-width:0;}
#ai-design-iteration-study .baseline-point {min-width:0;padding:18px 0;border-bottom:1px solid #d8e1eb;}
#ai-design-iteration-study .baseline-point:first-child {padding-top:0;}
#ai-design-iteration-study .baseline-point:last-child {padding-bottom:0;border-bottom:0;}
#ai-design-iteration-study .baseline-point h4 {display:flex;align-items:center;gap:10px;margin:0 0 8px;color:#005bb8;font:500 16px/24px 'Poppins',sans-serif;}
#ai-design-iteration-study .baseline-point h4 span {display:grid;place-items:center;flex:none;width:24px;height:24px;background:#eaf3ff;border-radius:50%;font-size:18px;}
#ai-design-iteration-study .baseline-point p {font:400 18px/30px 'Poppins',sans-serif;margin:0;color:#303030;}
#ai-design-iteration-study .review-study figcaption {opacity:1;margin:24px 0 0;}
#ai-design-iteration-study .review-study .review-state-label {display:inline-block;padding:2px 8px;border-radius:4px;background:#eaf3ff;color:#005bb8;font:500 14px/22px 'Poppins',sans-serif;}
#ai-design-iteration-study .review-study .review-side-caption {font:400 16px/26px 'Poppins',sans-serif;min-height:52px;margin:8px 0 0;}
@media(max-width:700px) {
 #ai-design-iteration-study .review-study .review-side-caption {min-height:0;}
}
@media(max-width:760px) {
 #ai-design-iteration-study .baseline-context {grid-template-columns:1fr;gap:28px;}
}
#ai-design-iteration-study .baseline-full-form {overflow:hidden;border-radius:12px;background:#fff;box-shadow:0 10px 28px #152d4a12;}
#ai-design-iteration-study .baseline-full-form .artifact-shot {display:block;width:100%;max-width:100%;height:auto;border-radius:0;box-shadow:none;}

/* Forms grow from their existing top edge; native scroll anchoring must not chase an added row. */
#ai-design-iteration-study .is-dialog[data-chapter="1"] .trial-ui {min-height:0;overflow-anchor:none;}

/* Balance the space above and below the replay artifact. */
#ai-design-iteration-study #adis-dialog[data-chapter="2"] .is-dialog-head {padding-bottom:24px;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .is-dialog-body {padding-bottom:0;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] .station-visual-group {justify-content:center;}
#ai-design-iteration-study .is-dialog[data-chapter="2"] > .replay-compact-status {padding-top:24px;}

/* The reference keeps ownership clear and makes the repeat path explicit. */
#ai-design-iteration-study .ledger-handoff {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 40px;position:relative;margin-block:auto;padding:0 0 8px;}
#ai-design-iteration-study .handoff-lane {position:relative;min-width:0;}
#ai-design-iteration-study .handoff-role {font:500 18px/27px 'Poppins',sans-serif;color:#005bb8;margin:0 0 12px;padding:0;border:0;}
#ai-design-iteration-study .handoff-lane:not(:nth-child(3))::after {content:'→';position:absolute;right:-29px;top:108px;color:#0071e3;font:400 24px/1 'Poppins',sans-serif;}
#ai-design-iteration-study .is-dialog[data-chapter="3"] .ledger-loop {grid-template-columns:1fr;gap:12px;margin:0;}
#ai-design-iteration-study .ledger-handoff .ledger-loop li {display:flex;gap:12px;margin:0;padding:14px;border:1px solid #d8e8fa;border-radius:12px;background:#f5f9fe;}
#ai-design-iteration-study .ledger-handoff .ledger-loop li::before,
#ai-design-iteration-study .ledger-handoff .ledger-loop li::after {display:none;}
#ai-design-iteration-study .ledger-handoff .loop-number {width:32px;height:32px;font-size:14px;flex:none;margin:0;border:0;background:#e2efff;}
#ai-design-iteration-study .ledger-handoff .ledger-loop h4 {margin:0;font-size:18px;line-height:27px;}
#ai-design-iteration-study .ledger-handoff .ledger-loop p {margin:8px 0 0;color:#40546a;}
#ai-design-iteration-study .handoff-return {position:relative;grid-column:1/-1;height:30px;margin:22px 16px 0;border:1.5px solid #0071e3;border-top:0;border-radius:0 0 16px 16px;}
#ai-design-iteration-study .handoff-return::before {content:'';position:absolute;left:-4.5px;top:1px;width:7px;height:7px;border-top:1.5px solid #0071e3;border-left:1.5px solid #0071e3;transform:rotate(45deg);}
#ai-design-iteration-study .ledger-handoff > .loop-repeat {position:relative;z-index:1;grid-column:1/-1;justify-self:center;background:#fff;margin:-14px 0 0!important;padding:0 16px;color:#005bb8;}

/* The first group and its two action scopes remain at one image scale, without internal scrolling. */
#ai-design-iteration-study .final-artifact-viewer {overflow:hidden;background:#fff;border-radius:10px;box-shadow:0 10px 32px #152d4a12;}
#ai-design-iteration-study .final-accepted-top,
#ai-design-iteration-study .final-accepted-action {position:relative;overflow:hidden;}
#ai-design-iteration-study .final-accepted-top {aspect-ratio:1600 / 920;}
#ai-design-iteration-study .final-accepted-action {aspect-ratio:1600 / 130;}
#ai-design-iteration-study .final-artifact-viewer img {display:block;position:absolute;width:100%;max-width:100%;height:auto;}
#ai-design-iteration-study .final-accepted-action img {transform:translateY(calc(-1650 / 2260 * 100%));}
@media(max-width:760px) {
 #ai-design-iteration-study .ledger-handoff {grid-template-columns:1fr;gap:28px;padding:0;}
 #ai-design-iteration-study .handoff-role {margin-bottom:12px;padding:0;}
 #ai-design-iteration-study .handoff-lane:not(:nth-child(3))::after {content:'↓';left:15px;right:auto;top:auto;bottom:-25px;font-size:20px;}
 #ai-design-iteration-study .handoff-return {display:none;}
 #ai-design-iteration-study .ledger-handoff > .loop-repeat {justify-self:start;margin:0!important;padding:0;}
}


/* Selected B+C return cue: the existing chapter action opens the Undo example. */
#ai-design-iteration-study .loop-ticket {display:grid;grid-template-columns:145px minmax(0,1fr);align-items:center;gap:22px;width:100%;padding:16px 24px 16px 12px;background:#edf5fd;border-radius:12px;}
#ai-design-iteration-study .loop-ticket-slips {padding-right:20px;border-right:1px dashed #a4c1df;}
#ai-design-iteration-study .loop-undo-slips {position:relative;width:120px;height:82px;pointer-events:none;}
#ai-design-iteration-study .loop-slip {position:absolute;width:76px;height:59px;padding:10px;border:1px solid #a4c1df;border-radius:7px;background:#fff;}
#ai-design-iteration-study .loop-slip i {display:block;height:3px;width:26px;margin:0 0 5px;background:#d3e3f3;border-radius:3px;}
#ai-design-iteration-study .loop-slip i:nth-child(2) {width:38px;}
#ai-design-iteration-study .loop-slip-back {left:5px;top:5px;transform:rotate(-10deg);background:#edf5fd;}
#ai-design-iteration-study .loop-slip-front {left:34px;top:19px;transform:rotate(5deg);transition:transform 220ms cubic-bezier(.16,1,.3,1);}
#ai-design-iteration-study .loop-slip-front > span {display:flex;align-items:center;gap:3px;font:500 10px/14px 'Poppins',sans-serif;color:#005bb8;}
#ai-design-iteration-study .loop-slip-front svg {width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
#ai-design-iteration-study .loop-slip-station {position:absolute;right:0;top:0;color:#005bb8;font:500 13px/20px 'Poppins',sans-serif;}
#ai-design-iteration-study .loop-ticket:focus-within .loop-slip-front,#ai-design-iteration-study .loop-ticket:hover .loop-slip-front {transform:rotate(0deg) translateY(-3px);}
#ai-design-iteration-study .loop-ticket-copy {margin:0;color:#405c78;font:400 16px/27px 'Poppins',sans-serif;}
#ai-design-iteration-study .loop-ticket-copy > span {display:block;margin-bottom:2px;color:#303030;font-weight:500;}
#ai-design-iteration-study .loop-cue-link {display:inline-block;max-width:100%;min-height:44px;margin:-8px 0;padding:8px 0;border:0;background:transparent;color:#005bb8;font:500 16px/27px 'Poppins',sans-serif;text-align:left;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px;cursor:pointer;}
#ai-design-iteration-study .loop-cue-link:hover {color:#003f80;text-decoration-thickness:2px;}
#ai-design-iteration-study .loop-cue-link:focus-visible {outline:2px solid #005bb8;outline-offset:4px;}
@media(max-width:700px) {
 #ai-design-iteration-study .loop-ticket {grid-template-columns:98px minmax(0,1fr);gap:16px;padding:16px 16px 16px 8px;}
 #ai-design-iteration-study .loop-ticket-slips {padding-right:14px;}
 #ai-design-iteration-study .loop-undo-slips {width:84px;height:65px;}
 #ai-design-iteration-study .loop-slip {width:58px;height:47px;padding:7px;}
 #ai-design-iteration-study .loop-slip-back {left:2px;top:5px;}
 #ai-design-iteration-study .loop-slip-front {left:21px;top:16px;}
 #ai-design-iteration-study .loop-slip i {width:20px;height:2px;margin-bottom:4px;}
 #ai-design-iteration-study .loop-slip i:nth-child(2) {width:30px;}
 #ai-design-iteration-study .loop-slip-front > span {font-size:9px;line-height:12px;}
 #ai-design-iteration-study .loop-slip-front svg {width:12px;height:12px;}
 #ai-design-iteration-study .loop-slip-station {top:-2px;font-size:11px;line-height:17px;}
 #ai-design-iteration-study .loop-ticket-copy,#ai-design-iteration-study .loop-cue-link {font-size:14px;line-height:23px;}
}
@media(prefers-reduced-motion:reduce) {
 #ai-design-iteration-study .loop-slip-front {transition:none;}
 #ai-design-iteration-study .loop-ticket:hover .loop-slip-front,#ai-design-iteration-study .loop-ticket:focus-within .loop-slip-front {transform:rotate(5deg);}
}

/* A compact cycle gives the case its method before the six detailed stations. */
#ai-design-iteration-study .is-map-intro {display:grid;grid-template-columns:minmax(0,1fr) 260px;align-items:center;gap:40px;}
#ai-design-iteration-study .is-map-intro > div {min-width:0;max-width:none;}
#ai-design-iteration-study .ledger-method-loop {position:relative;width:260px;margin:0;justify-self:end;}
#ai-design-iteration-study .ledger-method-loop svg {display:block;width:100%;max-width:100%;height:auto;}
#ai-design-iteration-study .is-page .ledger-loop-pause {position:absolute;top:0;right:0;display:grid;place-items:center;width:44px;height:44px;padding:0;border:0;border-radius:50%;background:transparent;color:#7a858e;cursor:pointer;}
#ai-design-iteration-study .ledger-loop-pause svg {width:12px;height:12px;}
#ai-design-iteration-study .is-page .ledger-loop-pause:hover {color:#526474;}
#ai-design-iteration-study .ledger-loop-pause:focus:not(:focus-visible),
#ai-design-iteration-study .ledger-loop-pause[data-pointer-focus]:focus {outline:none;box-shadow:none;}
#ai-design-iteration-study .ledger-loop-pause:focus-visible {outline:2px solid #0071e3;outline-offset:2px;}
#ai-design-iteration-study .ledger-loop-pause[hidden] {display:none;}
@media(prefers-reduced-motion:reduce) {
 #ai-design-iteration-study :is(.ledger-loop-traveler,.ledger-loop-pause) {display:none;}
}
@media(max-width:900px) {
 #ai-design-iteration-study .is-map-intro {grid-template-columns:minmax(0,1fr) 210px;gap:24px;}
 #ai-design-iteration-study .ledger-method-loop {width:210px;}
}
@media(max-width:700px) {
 #ai-design-iteration-study .is-map-intro {grid-template-columns:1fr;gap:18px;}
 #ai-design-iteration-study .ledger-method-loop {width:210px;justify-self:center;}
}

#ai-design-iteration-study .is-dialog[data-chapter="3"] .is-dialog-body {padding-bottom:16px;}

/* The loop and example share one natural, scrollable flow above navigation. */
#ai-design-iteration-study #adis-dialog[data-chapter="3"] .is-dialog-head {padding-bottom:32px;}
#ai-design-iteration-study .is-dialog[data-chapter="3"] .is-dialog-body {gap:0;padding-bottom:16px;}
#ai-design-iteration-study .is-dialog[data-chapter="3"] :is(.is-content-group,.station-visual-group,.is-dialog-stage,.is-general-scene) {flex:none;}
#ai-design-iteration-study .is-dialog[data-chapter="3"] .ledger-handoff {margin:0;padding-bottom:0;}
#ai-design-iteration-study .is-dialog[data-chapter="3"] .loop-previous-cue {padding:0;margin:56px 0 0;}
#ai-design-iteration-study .is-dialog[data-chapter="5"] .is-dialog-body {padding-bottom:8px;}
#ai-design-iteration-study .close-thesis {display:grid;gap:12px;padding:24px 0 12px;}
#ai-design-iteration-study .close-thesis p {margin:0;}
@media(max-width:700px) {
 #ai-design-iteration-study #adis-dialog[data-chapter="3"] .is-dialog-head {padding-bottom:32px;}
}
