.gtdscb-lesson{--cb-accent:#6745a2;max-width:var(--cb-width,860px);margin:0 auto;color:#252333;font-family:Inter,system-ui,-apple-system,'Segoe UI',sans-serif;line-height:1.65}.gtdscb-lesson *{box-sizing:border-box}.gtdscb-lesson .cb-block{margin:0 0 34px}.gtdscb-lesson h2{font-size:clamp(26px,3vw,38px);line-height:1.19;letter-spacing:-.035em;margin:0 0 20px;color:inherit}.gtdscb-lesson h3{font-size:20px;line-height:1.3;margin:0 0 12px}.gtdscb-lesson p{margin:0 0 12px}.cb-prose{font-size:17px}.cb-quote blockquote,.gtdscb-lesson blockquote{margin:0;border-left:4px solid var(--cb-accent);padding:20px 26px;background:#f6f4fa;font-size:clamp(20px,3vw,28px);line-height:1.4}.cb-callout{border-radius:16px;padding:26px;background:color-mix(in srgb,var(--cb-accent) 8%,white);border:1px solid color-mix(in srgb,var(--cb-accent) 20%,white)}.cb-block hr{border:0;border-top:1px solid #dedbe6;margin:32px 0}.cb-image img{display:block;width:100%;height:auto;max-height:650px;object-fit:cover;border-radius:14px}.cb-image figcaption{text-align:center;font-size:13px;color:#777;margin-top:10px}.cb-accordion details{border:1px solid #e1dfe8;border-radius:12px;margin:9px 0;background:#fff;overflow:hidden}.cb-accordion summary{cursor:pointer;font-weight:650;padding:19px 22px;list-style:none;display:flex;align-items:center;justify-content:space-between}.cb-accordion summary:after{content:'+';font-size:24px;color:var(--cb-accent)}.cb-accordion details[open] summary{color:var(--cb-accent);background:color-mix(in srgb,var(--cb-accent) 7%,white)}.cb-accordion details[open] summary:after{content:'−'}.cb-panel{padding:15px 22px 22px}.cb-tablist{display:flex;gap:8px;overflow:auto;border-bottom:1px solid #e0dce9}.cb-tablist button{background:none;border:0;border-bottom:3px solid transparent;padding:14px 22px;white-space:nowrap;cursor:pointer;color:#696378;font-weight:650}.cb-tablist button[aria-selected=true]{color:var(--cb-accent);border-bottom-color:var(--cb-accent)}.cb-tabpanel{background:#f8f7fa;border-radius:0 0 14px 14px;padding:26px}.cb-flashcards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:14px}.cb-flashcard{min-height:210px;padding:24px;background:#fff;border:1px solid #e0dce8;border-radius:16px;cursor:pointer;color:#24202b;font-size:20px;font-weight:650;box-shadow:0 5px 22px #15102508;transition:transform .18s,border-color .18s}.cb-flashcard:hover{transform:translateY(-3px);border-color:var(--cb-accent)}.cb-flashcard[aria-pressed=true]{background:var(--cb-accent);color:white}.cb-flashcard .cb-back,.cb-flashcard[aria-pressed=true] .cb-front{display:none}.cb-flashcard[aria-pressed=true] .cb-back{display:block;font-size:16px;font-weight:450}.cb-step{display:flex;gap:18px;padding:0 0 26px;position:relative}.cb-step:not(:last-child):before{content:'';position:absolute;top:39px;bottom:0;left:18px;border-left:2px solid #e8e1ee}.cb-stepnum{flex-shrink:0;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--cb-accent);color:white;font-weight:700}.cb-quiz{background:#f8f7fa;border:1px solid #eeeaf2;border-radius:16px;padding:28px}.cb-answers{display:grid;gap:10px}.cb-answers button{text-align:left;border:1px solid #e5dfea;border-radius:10px;background:white;padding:14px 16px;color:inherit;cursor:pointer}.cb-answers button:hover,.cb-answers .cb-selected{border-color:var(--cb-accent);background:color-mix(in srgb,var(--cb-accent) 8%,white)}.cb-feedback{font-weight:650;padding-top:14px;color:var(--cb-accent)}.cb-feedback[data-ok='1']{color:#187d51}.cb-video iframe{max-width:100%;width:100%;aspect-ratio:16/9;height:auto}.gtdscb-lesson button:focus-visible,.gtdscb-lesson summary:focus-visible{outline:3px solid var(--cb-accent);outline-offset:3px}@media(max-width:640px){.gtdscb-lesson{padding:0 14px}.gtdscb-lesson .cb-block{margin-bottom:26px}.cb-tablist button{padding:12px 14px}.cb-tabpanel,.cb-quiz{padding:18px}.cb-flashcard{min-height:165px}}
/* Block-specific author styling */
.gtdscb-lesson .cb-themed{background:var(--cb-surface,transparent);padding:var(--cb-pad,30px) 24px;border-radius:12px}.gtdscb-lesson .cb-theme-light{background:#fff}.gtdscb-lesson .cb-theme-gray{background:#f5f5f5}.gtdscb-lesson .cb-theme-theme{background:var(--cb-accent);color:#fff}.gtdscb-lesson .cb-theme-tint{background:color-mix(in srgb,var(--cb-accent) 12%,white)}.gtdscb-lesson .cb-theme-dark{background:#303030;color:#fff}.gtdscb-lesson .cb-theme-black{background:#080808;color:#fff}.gtdscb-lesson .cb-themed h2,.gtdscb-lesson .cb-themed h3,.gtdscb-lesson .cb-themed h4,.gtdscb-lesson .cb-themed h5{color:inherit}.gtdscb-lesson .cb-themed h4{font-size:21px}.gtdscb-lesson .cb-themed h5{font-size:18px}

/* Crisp, explicit active/inactive styling and assessed knowledge checks */
.gtdscb-lesson .cb-tablist{gap:5px;border-bottom:1px solid #d9d5df}
.gtdscb-lesson .cb-tablist button{border:1px solid transparent;border-bottom:3px solid transparent;border-radius:10px 10px 0 0;color:#666072;background:#f5f3f7;font-size:15px;font-weight:550;transition:background .16s,color .16s}
.gtdscb-lesson .cb-tablist button[aria-selected=true]{background:color-mix(in srgb,var(--cb-accent) 10%,white);color:var(--cb-accent);border-color:color-mix(in srgb,var(--cb-accent) 20%,white);border-bottom-color:var(--cb-accent);font-weight:750}
.gtdscb-lesson .cb-tablist button:hover:not([aria-selected=true]){background:#ebe8f0;color:#352e42}
.gtdscb-lesson .cb-tabpanel{background:#fff;border:1px solid #e9e5ed;border-top:0;padding:26px}
.gtdscb-lesson .cb-quiz-submit,.gtdscb-lesson .cb-quiz-retry{margin-top:16px;border:none;border-radius:9px;padding:12px 22px;background:var(--cb-accent);color:white;font-weight:700;cursor:pointer}
.gtdscb-lesson .cb-quiz-submit[hidden],.gtdscb-lesson .cb-quiz-retry[hidden]{display:none!important}
.gtdscb-lesson .cb-answers button{transition:border-color .12s,background .12s}.gtdscb-lesson .cb-answers .cb-selected{border:2px solid var(--cb-accent);font-weight:700;background:color-mix(in srgb,var(--cb-accent) 10%,white)}
.gtdscb-lesson .cb-answers button:disabled{opacity:.85;cursor:default}
.gtdscb-lesson .cb-feedback[data-ok='0']{color:#a33a39}

/* Expanded authoring interactions */
.gtdscb-lesson .cb-gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:18px}.gtdscb-lesson .cb-gallery figure{margin:0}.gtdscb-lesson .cb-gallery img{width:100%;height:180px;object-fit:cover;border-radius:12px}.gtdscb-lesson .cb-gallery figcaption{padding:8px 0;color:#555}.gtdscb-lesson .cb-labeled-stage{position:relative;min-height:260px;background:#f5f5f5;border-radius:12px;overflow:hidden}.gtdscb-lesson .cb-labeled-stage>img{width:100%;display:block}.gtdscb-lesson .cb-marker{position:absolute;transform:translate(-50%,-50%);border:4px solid #fff;background:var(--cb-accent,#6745a2);color:white;border-radius:50%;width:43px;height:43px;box-shadow:0 3px 12px #0003;cursor:pointer}.gtdscb-lesson .cb-marker-panel:not([hidden]){display:block;border:1px solid #ddd;padding:20px;border-radius:10px;margin-top:12px}.gtdscb-lesson .cb-sort-row{display:flex;justify-content:space-between;gap:15px;padding:14px;border-bottom:1px solid #ddd}.gtdscb-lesson .cb-sort-row select{max-width:48%;border:1px solid #aaa;border-radius:8px;padding:8px}.gtdscb-lesson .cb-multi label{display:block;margin:12px 0;padding:12px;border:1px solid #ddd;border-radius:10px}.gtdscb-lesson .cb-multi-submit,.gtdscb-lesson .cb-multi-retry,.gtdscb-lesson .cb-fill-submit,.gtdscb-lesson .cb-fill-retry,.gtdscb-lesson .cb-sort-submit{border:0;border-radius:20px;background:var(--cb-accent,#6745a2);color:white;padding:11px 22px;margin-top:12px;cursor:pointer}.gtdscb-lesson .cb-fill input{padding:12px;border-radius:8px;border:1px solid #aaa;max-width:100%}.gtdscb-lesson .cb-feedback[data-ok="1"]{color:#176b40}.gtdscb-lesson .cb-feedback[data-ok="0"]{color:#a52a24}@media(max-width:600px){.gtdscb-lesson .cb-sort-row{flex-direction:column}.gtdscb-lesson .cb-sort-row select{max-width:100%}}
/* GTDS builder 2.0 learner-facing parity for core interactions */
.gtdscb-lesson{--cb-accent:#6745a2;max-width:var(--cb-width,860px);margin-inline:auto;color:#25232b;font:18px/1.65 Arial,Helvetica,sans-serif}
.gtdscb-lesson .cb-block{padding-block:var(--cb-pad,30px);margin:0;max-width:100%;box-sizing:border-box}
.gtdscb-lesson .cb-block h2,.gtdscb-lesson .cb-block h3{line-height:1.25;letter-spacing:-.02em}
.gtdscb-lesson .cb-block.cb-theme-theme{background:var(--cb-accent);color:#fff}
.gtdscb-lesson .cb-block.cb-theme-tint{background:color-mix(in srgb,var(--cb-accent) 12%,white)}
.gtdscb-lesson .cb-block.cb-theme-gray{background:#f5f5f5}
.gtdscb-lesson .cb-block.cb-theme-dark{background:#303030;color:#fff}
.gtdscb-lesson .cb-block.cb-theme-black{background:#070707;color:#fff}
.gtdscb-lesson .cb-tabs .cb-tablist{display:flex;gap:25px;overflow:auto;border-bottom:1px solid #dad8df}
.gtdscb-lesson .cb-tabs .cb-tablist button{border:0;border-bottom:4px solid transparent;background:transparent;color:#6d6777;font-size:16px;padding:12px 4px}
.gtdscb-lesson .cb-tabs .cb-tablist button[aria-selected="true"]{border-bottom-color:var(--cb-accent);color:var(--cb-accent);font-weight:700}
.gtdscb-lesson .cb-tabs .cb-tabpanel{background:#f7f6fa;padding:24px;min-height:80px;color:#25232b}
.gtdscb-lesson .cb-accordion details{border-radius:0;border-bottom:1px solid #dedce2}.gtdscb-lesson .cb-accordion summary{padding:20px 18px}.gtdscb-lesson .cb-accordion details>div{background:#f7f6fa;padding:20px 25px}
.gtdscb-lesson .cb-quiz .cb-answers button{display:block;width:100%;margin:8px 0;padding:17px;text-align:left;border:1px solid #ddd;background:#fff;color:#272530}.gtdscb-lesson .cb-quiz .cb-answers button.cb-selected{border:2px solid var(--cb-accent);background:#f1eaf8}
.gtdscb-lesson .cb-quiz-submit,.gtdscb-lesson .cb-quiz-retry,.gtdscb-lesson .cb-multi-submit,.gtdscb-lesson .cb-multi-retry,.gtdscb-lesson .cb-fill-submit,.gtdscb-lesson .cb-fill-retry,.gtdscb-lesson .cb-survey-submit,.gtdscb-lesson .cb-match-submit{border:0;background:var(--cb-accent);color:#fff;font-weight:700;padding:12px 20px;border-radius:4px;margin:17px 8px 0 0;cursor:pointer}
.gtdscb-lesson .cb-multi label,.gtdscb-lesson .cb-survey .cb-choice{display:block;padding:15px;border:1px solid #ddd;margin:7px 0;background:#fff}.gtdscb-lesson .cb-multi input,.gtdscb-lesson .cb-survey input{accent-color:var(--cb-accent)}
.gtdscb-lesson .cb-feedback{font-size:14px;font-weight:650}.gtdscb-lesson .cb-feedback[data-ok="1"]{color:#188052}.gtdscb-lesson .cb-feedback[data-ok="0"]{color:#a33f39}
.gtdscb-lesson .cb-continue{background:var(--cb-accent);border-radius:5px;text-align:center;color:white;font-weight:700;padding:15px 25px}
.gtdscb-lesson .cb-matching .cb-sort-row{display:flex;align-items:center;gap:20px;justify-content:space-between;padding:9px 0}.gtdscb-lesson .cb-matching input{border:1px solid #ddd;border-radius:4px;padding:10px;min-width:130px}
.gtdscb-lesson .cb-scenario-choice{border:1px solid #ddd;background:#fff;padding:15px;text-align:left;display:block;margin:7px 0;width:100%;cursor:pointer}
.gtdscb-lesson .cb-chart-row{display:grid;grid-template-columns:100px 1fr 60px;gap:15px;align-items:center;margin:15px 0}.gtdscb-lesson .cb-chart-track{background:#eee;height:18px}.gtdscb-lesson .cb-chart-track span{display:block;height:100%;background:var(--cb-accent)}
.gtdscb-lesson .cb-labeled-stage{position:relative}.gtdscb-lesson .cb-labeled .cb-marker{border-radius:50%}.gtdscb-lesson .cb-marker-panel{background:white;color:#222;padding:15px;box-shadow:0 5px 20px #0002}
.gtdscb-lesson .cb-gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.gtdscb-lesson .cb-gallery img{width:100%;height:auto}
@media(max-width:650px){.gtdscb-lesson{font-size:16px}.gtdscb-lesson .cb-block{padding-inline:16px}.gtdscb-lesson .cb-gallery{grid-template-columns:1fr}.gtdscb-lesson .cb-chart-row{grid-template-columns:75px 1fr 45px;gap:7px}}

/* v2.0.1: match lesson-canvas vertical padding. Theme surface is the single spacing owner. */
.gtdscb-lesson .cb-block.cb-themed{display:flow-root;box-sizing:border-box;margin-block:0!important;padding-block:var(--cb-pad,30px)!important;padding-inline:clamp(16px,4vw,55px)}
.gtdscb-lesson .cb-block.cb-themed>:first-child{margin-top:0}
.gtdscb-lesson .cb-block.cb-themed>:last-child{margin-bottom:0}
.gtdscb-lesson .cb-block.cb-themed>.cb-prose>:last-child,
.gtdscb-lesson .cb-block.cb-themed>.cb-callout>:last-child,
.gtdscb-lesson .cb-block.cb-themed>.cb-quote>:last-child{margin-bottom:0}
.gtdscb-lesson .cb-block.cb-themed>h2,.gtdscb-lesson .cb-block.cb-themed>h3,
.gtdscb-lesson .cb-block.cb-themed>h4,.gtdscb-lesson .cb-block.cb-themed>h5{margin-block:0}

/* v2.0.7.0 unified block presentation and responsive behavior */
.gtdscb-lesson{width:min(100%,var(--cb-width,860px));max-width:100%;margin-inline:auto;font-family:Arial,Helvetica,sans-serif;color:#25232b}
.gtdscb-lesson .cb-block.cb-themed{border-radius:0;padding-block:var(--cb-pad,30px)!important;padding-inline:clamp(16px,4vw,55px)!important;margin:0!important}
.gtdscb-lesson .cb-flashcards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:14px}
.gtdscb-lesson .cb-flashcard{min-height:180px;border-radius:9px;border:1px solid #e6e0ee;background:#fff;color:#25232b;cursor:pointer;transition:border-color .18s,box-shadow .18s,transform .18s}
.gtdscb-lesson .cb-flashcard:hover{border-color:var(--cb-accent);box-shadow:0 6px 18px #18102415}
.gtdscb-lesson .cb-multi label{display:flex;align-items:center;gap:12px;border-radius:7px;border:1px solid #e3dee9;margin:7px 0;padding:14px 16px;font-size:16px;line-height:1.5;cursor:pointer}
.gtdscb-lesson .cb-multi label:has(input:checked){background:color-mix(in srgb,var(--cb-accent) 8%,white);border-color:var(--cb-accent)}
.gtdscb-lesson .cb-multi input{flex:0 0 auto;width:18px;height:18px}
.gtdscb-lesson .cb-gallery:empty{display:none}.gtdscb-lesson .cb-gallery{gap:16px;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}
.gtdscb-lesson .cb-sort-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid #eee6f0}
.gtdscb-lesson .cb-sort-row select{flex:0 1 48%;min-height:44px;max-width:100%;border:1px solid #ded8e6;border-radius:7px;background:#fff}
.gtdscb-lesson .cb-multi-submit,.gtdscb-lesson .cb-multi-retry,.gtdscb-lesson .cb-sort-submit{background:var(--cb-accent);border-radius:7px;min-height:44px;font-weight:700}
.gtdscb-lesson button,.gtdscb-lesson select{font-family:inherit}
@media(max-width:640px){.gtdscb-lesson{width:100%;font-size:16px}.gtdscb-lesson .cb-block.cb-themed{padding-inline:18px!important}.gtdscb-lesson .cb-sort-row{align-items:stretch;flex-direction:column}.gtdscb-lesson .cb-sort-row select{flex:auto;width:100%}.gtdscb-lesson .cb-multi label{font-size:15px}.gtdscb-lesson .cb-flashcards{grid-template-columns:1fr}}

/* GTDS 2.0.8: shared visual interaction system; scoped to published lesson only. */
.gtdscb-lesson{--cb-radius:10px;--cb-card-border:#e4deeb;--cb-muted:#726d7a;--cb-motion:420ms}
.gtdscb-lesson .cb-block{font-family:inherit;color:inherit}
.gtdscb-lesson .cb-block.cb-themed{padding-block:var(--cb-pad,30px)!important}
.gtdscb-lesson .cb-flashcards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:16px;perspective:1200px}
.gtdscb-lesson .cb-flashcard{display:block;position:relative;min-height:210px;height:210px;padding:0!important;border:0!important;border-radius:var(--cb-radius);background:transparent!important;color:inherit!important;box-shadow:none!important;perspective:1000px;transform:none!important;overflow:visible;text-align:center;cursor:pointer}
.gtdscb-lesson .cb-flip-inner{display:block;position:relative;height:100%;width:100%;transform-style:preserve-3d;transition:transform var(--cb-motion) cubic-bezier(.2,.72,.2,1)}
.gtdscb-lesson .cb-flashcard[aria-pressed="true"] .cb-flip-inner{transform:rotateY(180deg)}
.gtdscb-lesson .cb-flashcard .cb-face,.gtdscb-lesson .cb-flashcard[aria-pressed="true"] .cb-front,.gtdscb-lesson .cb-flashcard[aria-pressed="true"] .cb-back{display:flex!important;position:absolute;inset:0;flex-direction:column;align-items:center;justify-content:center;gap:15px;padding:22px;border:1px solid var(--cb-card-border);border-radius:var(--cb-radius);background:#fff;color:#292431;backface-visibility:hidden;-webkit-backface-visibility:hidden;box-shadow:0 2px 10px rgba(30,17,45,.04);font:inherit;line-height:1.4}
.gtdscb-lesson .cb-flashcard .cb-back{transform:rotateY(180deg);background:var(--cb-accent);color:white;border-color:var(--cb-accent)}
.gtdscb-lesson .cb-flashcard .cb-flip-content{font-size:clamp(17px,1.4vw,21px);font-weight:700;overflow-wrap:anywhere}
.gtdscb-lesson .cb-flashcard .cb-back .cb-flip-content{font-size:17px;font-weight:500}
.gtdscb-lesson .cb-flashcard .cb-flip-hint{font-size:12px;font-weight:500;opacity:.68}
.gtdscb-lesson .cb-flashcard:hover .cb-face{border-color:var(--cb-accent)}
.gtdscb-lesson .cb-flashcard:focus-visible{outline:3px solid var(--cb-accent);outline-offset:5px}
.gtdscb-lesson .cb-flashcard[aria-pressed="true"]{background:transparent!important}
.gtdscb-lesson .cb-multi label,.gtdscb-lesson .cb-survey .cb-choice{border-radius:var(--cb-radius)!important;border:1px solid var(--cb-card-border)!important;padding:15px 16px!important;transition:border-color .15s,background .15s}
.gtdscb-lesson .cb-multi label:has(input:checked){border-color:var(--cb-accent)!important;background:color-mix(in srgb,var(--cb-accent) 8%,white)!important}
.gtdscb-lesson .cb-multi-submit,.gtdscb-lesson .cb-multi-retry,.gtdscb-lesson .cb-sort-submit,.gtdscb-lesson .cb-quiz-submit,.gtdscb-lesson .cb-quiz-retry,.gtdscb-lesson .cb-fill-submit,.gtdscb-lesson .cb-fill-retry,.gtdscb-lesson .cb-match-submit,.gtdscb-lesson .cb-survey-submit{background:var(--cb-accent)!important;color:#fff!important;border:0!important;border-radius:8px!important;min-height:44px;padding:11px 22px!important;font-size:15px!important;font-weight:700!important;line-height:1.4!important;font-family:inherit!important;cursor:pointer}
.gtdscb-lesson button:focus-visible,.gtdscb-lesson select:focus-visible{outline:2px solid var(--cb-accent);outline-offset:3px}
.gtdscb-lesson .cb-gallery figure{min-width:0}
.gtdscb-lesson .cb-gallery img{display:block;max-width:100%;height:auto;border-radius:8px}
@media(prefers-reduced-motion:reduce){.gtdscb-lesson .cb-flip-inner{transition:none}}
@media(max-width:600px){.gtdscb-lesson .cb-flashcards{grid-template-columns:1fr}.gtdscb-lesson .cb-flashcard{height:190px;min-height:190px}}

/* v2.1.1: layout-aware legacy migration components */
.gtdscb-lesson .cb-media-text{display:grid;grid-template-columns:minmax(0,39fr) minmax(0,61fr);align-items:stretch;gap:clamp(20px,3vw,44px)}
.gtdscb-lesson .cb-media-text figure{margin:0;min-width:0}
.gtdscb-lesson .cb-media-text img{display:block;width:100%;height:100%;min-height:220px;max-height:430px;object-fit:cover;border-radius:10px}
.gtdscb-lesson .cb-media-copy{display:flex;flex-direction:column;justify-content:center;min-width:0}
.gtdscb-lesson .cb-media-copy p{margin:0 0 12px}
.gtdscb-lesson .cb-flashcard .cb-flip-image{display:block;max-width:100%;max-height:100%;width:100%;height:100%;object-fit:contain;border-radius:8px}
.gtdscb-lesson .cb-flashcard:has(.cb-flip-image){height:310px;min-height:310px}
.gtdscb-lesson .cb-flashcard:has(.cb-flip-image) .cb-front{padding:10px}
.gtdscb-lesson .cb-flashcard:has(.cb-flip-image) .cb-front .cb-flip-content{display:block;width:100%;height:calc(100% - 20px);min-height:0}
.gtdscb-lesson .cb-flashcard:has(.cb-flip-image) .cb-flip-hint{font-size:11px}
@media(max-width:640px){.gtdscb-lesson .cb-media-text{grid-template-columns:1fr}.gtdscb-lesson .cb-media-text img{height:auto;min-height:0;max-height:420px}.gtdscb-lesson .cb-flashcard:has(.cb-flip-image){height:280px;min-height:280px}}
/* Keep exactly three migrated image-front cards on one row when space permits. */
@media(min-width:760px){.gtdscb-lesson .cb-flashcards:has(> :nth-child(3):last-child){grid-template-columns:repeat(3,minmax(0,1fr))}}

/* 2.1.2 migrated flashcard fidelity */
.gtdscb-lesson .cb-flashcards:has(.cb-flip-image){gap:18px}
.gtdscb-lesson .cb-flashcard:has(.cb-flip-image){height:320px;min-height:320px}
.gtdscb-lesson .cb-flashcard:has(.cb-flip-image) .cb-front{padding:10px 10px 30px;gap:0}
.gtdscb-lesson .cb-flashcard:has(.cb-flip-image) .cb-front .cb-flip-content{flex:1;height:auto;min-height:0;display:flex;align-items:stretch}
.gtdscb-lesson .cb-flashcard .cb-flip-image{width:100%;height:100%;min-height:0;object-fit:contain}
.gtdscb-lesson .cb-flashcard:has(.cb-flip-image) .cb-flip-hint{position:absolute;bottom:8px;left:8px;right:8px;text-align:center}
.gtdscb-lesson .cb-flashcard .cb-back{background:#fff!important;color:#25232b!important;border-color:#e6e0ee!important;padding:20px!important}
.gtdscb-lesson .cb-flashcard .cb-back .cb-flip-content{font-size:clamp(14px,1.1vw,17px);line-height:1.45;font-weight:400;text-transform:none;overflow-wrap:break-word;word-break:normal}
.gtdscb-lesson .cb-flashcard .cb-back strong{font-weight:700}
@media(min-width:760px){.gtdscb-lesson .cb-flashcards:has(> :nth-child(3):last-child){grid-template-columns:repeat(3,minmax(0,1fr))}}

/* v2.3.1: Icon list and numbered list, shared authoring/learner visuals */
.cb-list-items,.cb-icon-list{display:grid;gap:20px;width:100%}
.cb-list-item,.cb-icon-list-item{display:grid;grid-template-columns:44px minmax(0,1fr);align-items:start;gap:18px;line-height:1.5}
.cb-list-item strong,.cb-icon-list-item strong{display:block;font-weight:700;font-size:1.03em;margin-bottom:5px}
.cb-list-bullet{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--rise-accent,var(--cb-accent,#6745a2));color:#fff;font-weight:800;font-size:15px}
.cb-icon-slot{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;background:color-mix(in srgb,var(--rise-accent,var(--cb-accent,#6745a2)) 10%,white)}
.cb-item-icon-img{width:25px;height:25px;object-fit:contain;display:block}
.cb-list-item-body{font-size:.93em;line-height:1.6;overflow-wrap:anywhere}.cb-list-item-body p{margin:0 0 8px}
.cb-icon-picker{border-top:1px solid #e7e4ec;padding-top:14px;margin-top:12px}.cb-icon-picker-label{font-weight:750;font-size:13px}.cb-icon-current{display:flex;align-items:center;gap:12px;margin:12px 0}.cb-icon-current img{height:31px;width:31px;object-fit:contain}.cb-icon-current small{color:#777}
.cb-icon-results{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;max-height:215px;overflow:auto;margin:10px 0;padding:4px}.cb-icon-results button{background:#fff;border:1px solid #e6e2e9;border-radius:8px;min-height:43px;display:grid;place-items:center;cursor:pointer}.cb-icon-results button:hover,.cb-icon-results button:focus-visible{border-color:#6745a2;background:#f6f3fc}.cb-icon-results img{height:23px;width:23px}
@media(max-width:520px){.cb-list-item,.cb-icon-list-item{grid-template-columns:34px minmax(0,1fr);gap:12px}.cb-icon-slot,.cb-list-bullet{width:32px;height:32px}.cb-item-icon-img{width:21px;height:21px}}

.gtdscb-lesson .cb-checklist{list-style:none;margin:0;padding:0;display:grid;gap:14px}.gtdscb-lesson .cb-checklist li{display:grid;grid-template-columns:28px 1fr;gap:12px}.gtdscb-lesson .cb-checklist li>span{font-size:21px;font-weight:800;color:var(--cb-accent)}.gtdscb-lesson .cb-checklist li strong{display:block}.gtdscb-lesson .cb-steps .cb-step{display:grid;grid-template-columns:42px 1fr;gap:16px}.gtdscb-lesson .cb-stepnum{flex-shrink:0}

/* v2.3.3 interactive Process: only one visible slide */
.gtdscb-lesson .cb-process{max-width:100%;border:1px solid #e7e3ee;border-radius:10px;padding:clamp(16px,3vw,30px);background:#fff;color:#25212c}
.gtdscb-lesson .cb-process-progress{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin:0 0 22px}
.gtdscb-lesson .cb-process-dot{width:38px;height:38px;border:1px solid #d5cede;border-radius:50%;background:#fff;color:#554a61;cursor:pointer;font-weight:700}
.gtdscb-lesson .cb-process-dot[aria-current="step"]{background:var(--cb-accent);border-color:var(--cb-accent);color:#fff}
.gtdscb-lesson .cb-process-dot:focus-visible,.gtdscb-lesson .cb-process-footer button:focus-visible{outline:3px solid var(--cb-accent);outline-offset:3px}
.gtdscb-lesson .cb-process-slide[hidden]{display:none!important}
.gtdscb-lesson .cb-process-slide{min-height:150px;animation:cbProcessFade .2s ease}
.gtdscb-lesson .cb-process-eyebrow{font-size:12px;font-weight:750;letter-spacing:.07em;color:var(--cb-accent);margin-bottom:10px}
.gtdscb-lesson .cb-process-slide h3{font-size:clamp(20px,3vw,27px);margin:0 0 14px}
.gtdscb-lesson .cb-process-media{width:100%;max-height:360px;object-fit:contain;display:block;margin:12px 0 18px;border-radius:5px}
.gtdscb-lesson .cb-process-description{line-height:1.65;overflow-wrap:anywhere}
.gtdscb-lesson .cb-process-footer{display:flex;justify-content:space-between;align-items:center;gap:10px;border-top:1px solid #e7e3ee;margin-top:22px;padding-top:16px}
.gtdscb-lesson .cb-process-footer button{background:transparent;border:0;color:var(--cb-accent);font-weight:750;cursor:pointer;padding:8px 10px}
.gtdscb-lesson .cb-process-footer button:disabled{opacity:.35;cursor:not-allowed}
.gtdscb-lesson .cb-process-counter{font-size:13px;color:#625d68;white-space:nowrap}
@keyframes cbProcessFade{from{opacity:.45;transform:translateY(3px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){.gtdscb-lesson .cb-process-slide{animation:none}}
@media(max-width:450px){.gtdscb-lesson .cb-process{padding:14px}.gtdscb-lesson .cb-process-dot{width:32px;height:32px}}

/* Native blocks 2.4 */
.cb-button-stack{display:flex;flex-direction:column;align-items:flex-start;gap:12px}.cb-action-link{display:inline-flex;align-items:center;padding:12px 20px;border-radius:6px;background:var(--cb-accent,#6745a2);color:white!important;font-weight:650;text-decoration:none!important}.cb-numbered-divider{display:flex;gap:16px;align-items:center;border-bottom:1px solid #ddd;padding:18px 0}.cb-numbered-divider strong{font-size:26px;color:var(--cb-accent,#6745a2)}.cb-spacer{width:100%}.cb-table-wrap{max-width:100%;overflow-x:auto}.cb-table-wrap table{width:100%;border-collapse:collapse}.cb-table-wrap td,.cb-table-wrap th{padding:12px 16px;border:1px solid #dad7de;text-align:left}.cb-table-wrap thead{background:#f6f3f9}.cb-simple-carousel{width:100%;max-width:100%;overflow:hidden}.cb-carousel-track>figure{margin:0}.cb-carousel-track img{display:block;max-height:450px;max-width:100%;width:100%;object-fit:contain}.cb-carousel-track [hidden]{display:none!important}.cb-carousel-nav{display:flex;justify-content:center;align-items:center;gap:20px;padding:14px 0}.cb-carousel-nav button,.cb-draw-question{border:1px solid #ded8e8;border-radius:5px;background:#fff;color:#432e61;padding:8px 14px;cursor:pointer}.cb-carousel-nav button:disabled{opacity:.4;cursor:not-allowed}.cb-carousel-track blockquote{font-size:1.25em;line-height:1.5;padding:30px 22px;background:#f8f7fa}.cb-carousel-track blockquote footer{font-size:.75em;padding-top:12px}.cb-svg-chart svg{display:block;width:100%;height:220px;overflow:visible;border-bottom:1px solid #ddd}.cb-chart-legend{display:flex;gap:18px;flex-wrap:wrap;font-size:.85em;padding-top:12px}.cb-pie{width:min(250px,75vw);height:min(250px,75vw);border-radius:50%;margin:16px auto}.cb-pie-chart ul{padding:0;list-style:none;display:grid;gap:8px}.cb-pie-chart li{display:flex;align-items:center;gap:8px}.cb-pie-chart li span{width:12px;height:12px;display:inline-block}.cb-external-embed iframe{width:100%;min-height:520px;border:0}.cb-question-bank{padding:20px;background:#f9f8fb;border-radius:8px}.cb-drawn-question{padding-top:14px}.cb-drawn-question button{padding:8px 12px}.cb-stack .cb-flashcard{margin:auto;display:block;max-width:420px;width:100%}@media(max-width:600px){.cb-external-embed iframe{min-height:350px}.cb-table-wrap th,.cb-table-wrap td{padding:8px}.cb-carousel-nav{gap:10px}}

.cb-item-actions{display:flex;gap:8px;padding:12px 0}.cb-item-actions button{border:1px solid #d7d2df;border-radius:5px;background:#fff;padding:7px 10px}.cb-interactive-checklist input,.rise-checklist input{width:17px;height:17px;accent-color:var(--cb-accent,#6745a2)}.cb-interactive-checklist li:has(input:checked) strong,.rise-checklist li:has(input:checked) strong{text-decoration:line-through;opacity:.65}

.cb-sort-drag-area{padding:14px 0}.cb-sort-chips,.cb-sort-zones{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.cb-sort-chip{background:white;border:1px solid #a995cd;border-radius:5px;padding:10px 14px;cursor:grab}.cb-sort-zone{min-width:150px;min-height:110px;flex:1;border:2px dashed #b4a4cf;border-radius:7px;padding:13px;display:flex;flex-wrap:wrap;align-content:flex-start;gap:8px}.cb-sort-zone strong{display:block;flex-basis:100%}.cb-sort-over{background:#f5f0fb;border-color:#6745a2}.cb-sort-placed{font-size:.9em}.cb-sort-reset{border:1px solid #ddd;background:#fff;border-radius:5px;padding:8px 12px}.cb-sort-fallback{font-size:.88em}

/* 2.4.0.3: Lossless image display, matching the authoring canvas.
   Preserve intrinsic aspect ratios. Never crop learner artwork to a fixed-height viewport. */
.gtdscb-lesson .cb-image img,
.gtdscb-lesson .cb-image figure img,
.gtdscb-lesson .cb-process .cb-process-media,
.gtdscb-lesson .cb-media-text img,
.gtdscb-lesson .cb-gallery figure img,
.gtdscb-lesson .cb-simple-carousel .cb-carousel-track img {
 display:block!important;max-width:100%!important;width:auto!important;height:auto!important;
 max-height:none!important;min-height:0!important;object-fit:contain!important;
 object-position:center center!important;margin-left:auto;margin-right:auto;
 aspect-ratio:auto!important;
}
.gtdscb-lesson .cb-process .cb-process-media {width:auto!important;max-width:100%!important;}
.gtdscb-lesson .cb-media-text img {width:100%!important;}
.gtdscb-lesson .cb-gallery figure img {width:100%!important;}
.gtdscb-lesson .cb-image figure,.gtdscb-lesson .cb-gallery figure {margin-left:0;margin-right:0;}
.gtdscb-lesson .cb-process-slide,.gtdscb-lesson .cb-simple-carousel,.gtdscb-lesson .cb-media-text {height:auto!important;max-height:none!important;overflow:visible;}
.gtdscb-lesson .cb-process-slides{height:auto!important;max-height:none!important;overflow:visible;}
/* Allow the document's last content to scroll above fixed LMS player controls. */
.gtdscb-lesson{padding-bottom:max(115px,env(safe-area-inset-bottom,0px) + 95px);}
.gtdscb-lesson .cb-block{scroll-margin-bottom:130px;}
@media(max-width:640px){.gtdscb-lesson{padding-bottom:max(130px,env(safe-area-inset-bottom,0px) + 105px);}}


/* 2.4.0.4: Rise-inspired Process and Steps. Same component geometry in author and learner. */
.gtdscb-lesson .cb-process,.rise-block .rise-process{position:relative;max-width:100%;margin:0;background:#f7f7f8;border:0;border-radius:0;padding:24px clamp(10px,3vw,32px) 22px;color:#29262e;overflow:visible;box-shadow:none}
.gtdscb-lesson .cb-process-slides,.rise-block .rise-process-step{position:relative;background:#fff;border:0;min-width:0}
.gtdscb-lesson .cb-process-slide,.rise-block .rise-process-step{min-height:0!important;height:auto!important;max-height:none!important;overflow:visible!important;padding:0 0 18px;animation:cbProcessFade .2s ease}
.gtdscb-lesson .cb-process-slide[hidden],.rise-block .rise-process-step[hidden]{display:none!important}
.gtdscb-lesson .cb-process-eyebrow,.rise-block .rise-process-eyebrow{display:flex;align-items:center;justify-content:center;min-height:35px;letter-spacing:normal;margin:0 0 7px;color:#fff}
.gtdscb-lesson .cb-process-eyebrow>span,.rise-block .rise-process-eyebrow>span{display:grid;place-items:center;background:var(--cb-accent,#6745a2);color:#fff;border-radius:4px;min-width:44px;height:34px;padding:0 10px;font-size:14px;font-weight:750;line-height:1}
.rise-block .rise-process-eyebrow>span{background:var(--rise-accent,#6745a2)}
.gtdscb-lesson .cb-process-content,.rise-block .rise-process-content{padding:clamp(19px,3.6vw,40px) clamp(20px,5vw,58px) 14px;background:#fff;max-width:100%;box-sizing:border-box}
.gtdscb-lesson .cb-process-slide h3,.rise-block .rise-process-step h3{font-size:clamp(21px,2.3vw,29px)!important;font-weight:750;line-height:1.3;margin:0 0 24px;color:inherit;letter-spacing:-.02em;text-transform:none}
.gtdscb-lesson .cb-process-media,.rise-block .rise-process-media{display:block;width:auto!important;max-width:100%!important;height:auto!important;max-height:none!important;object-fit:contain!important;object-position:center;margin:0 auto 25px;border-radius:0;box-shadow:none}
.gtdscb-lesson .cb-process-description,.rise-block .rise-process-description{font-size:clamp(16px,1.4vw,18px);line-height:1.62;overflow-wrap:break-word;color:#33313a}
.gtdscb-lesson .cb-process-description p,.rise-block .rise-process-description p{margin:0 0 14px}
.gtdscb-lesson .cb-process-footer,.rise-block .rise-process-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px clamp(12px,3vw,30px) 0;margin:0;background:#fff;border-top:1px solid #efedf2;flex-wrap:wrap}
.gtdscb-lesson .cb-process-progress,.rise-block .rise-process-count{display:flex;align-items:center;justify-content:center;gap:5px;flex-wrap:wrap;margin:0;padding:0}
.gtdscb-lesson .cb-process-dot,.rise-block .rise-process-count button{display:grid;place-items:center;width:30px;height:30px;min-width:30px;border:1px solid transparent!important;border-radius:50%;background:transparent;color:#85818a;font-size:13px;font-weight:650;cursor:pointer;box-shadow:none;padding:0}
.gtdscb-lesson .cb-process-dot[aria-current="step"],.rise-block .rise-process-count button.active{background:#fff!important;border:2px solid var(--cb-accent,#6745a2)!important;color:var(--cb-accent,#6745a2)!important}
.rise-block .rise-process-count button.active{border-color:var(--rise-accent,#6745a2)!important;color:var(--rise-accent,#6745a2)!important}
.gtdscb-lesson .cb-process-footer>button,.rise-block .rise-process-footer>button{background:transparent!important;border:0!important;color:var(--cb-accent,#6745a2);font-weight:700;font-size:14px;padding:8px 6px;cursor:pointer;box-shadow:none}
.rise-block .rise-process-footer>button{color:var(--rise-accent,#6745a2)}
.gtdscb-lesson .cb-process-footer>button:disabled,.rise-block .rise-process-footer>button:disabled{opacity:.28;cursor:default}
.gtdscb-lesson .cb-process-counter{color:#87828e;font-size:12px;font-weight:500;margin-left:auto}
.gtdscb-lesson .cb-steps,.rise-block .rise-steps{display:grid;gap:0;padding:0;margin:0;background:#fff}
.gtdscb-lesson .cb-steps .cb-step,.rise-block .rise-steps .rise-step{position:relative;display:grid;grid-template-columns:44px minmax(0,1fr);align-items:start;gap:23px;padding:0 0 34px;min-height:70px}
.gtdscb-lesson .cb-steps .cb-step:not(:last-child)::before,.rise-block .rise-step:not(:last-child)::before{content:"";position:absolute;top:44px;bottom:0;left:21px;width:2px;background:#ebe6f1}
.gtdscb-lesson .cb-stepnum,.rise-block .rise-step-number{width:44px;height:44px;display:grid;place-items:center;background:var(--cb-accent,#6745a2);color:#fff;border-radius:50%;font-size:16px;font-weight:750;box-shadow:0 0 0 6px #f7f4fb;z-index:1}
.rise-block .rise-step-number{background:var(--rise-accent,#6745a2)}
.gtdscb-lesson .cb-step-content,.rise-block .rise-step>div{min-width:0;padding:6px 0 0}
.gtdscb-lesson .cb-step h3,.rise-block .rise-step h3{font-size:clamp(19px,2vw,23px);font-weight:730;line-height:1.3;margin:0 0 9px;letter-spacing:-.01em}
.gtdscb-lesson .cb-step-content>div,.rise-block .rise-step>div>div{font-size:clamp(16px,1.5vw,18px);line-height:1.6;overflow-wrap:break-word}
@media(max-width:600px){.gtdscb-lesson .cb-process,.rise-block .rise-process{padding:12px 0 10px}.gtdscb-lesson .cb-process-content,.rise-block .rise-process-content{padding:22px 18px 10px}.gtdscb-lesson .cb-process-footer,.rise-block .rise-process-footer{gap:7px;padding:12px 10px}.gtdscb-lesson .cb-process-counter{display:none}.gtdscb-lesson .cb-process-dot,.rise-block .rise-process-count button{width:27px;height:27px;min-width:27px}.gtdscb-lesson .cb-steps .cb-step,.rise-block .rise-steps .rise-step{gap:15px}}
@media(prefers-reduced-motion:reduce){.gtdscb-lesson .cb-process-slide,.rise-block .rise-process-step{animation:none!important}}


/* 2.4.0.5 Process: author-learner geometry, slide transition, responsive image positioning */
.gtdscb-lesson .cb-process,.rise-block .rise-process{padding:0!important;background:transparent!important;border:0!important;max-width:100%;min-width:0}
.gtdscb-lesson .cb-process-content,.rise-block .rise-process-content{display:flex;flex-direction:column;gap:clamp(14px,2.5vw,26px);padding:clamp(12px,2.5vw,28px) 0!important;align-items:stretch;min-width:0}
.gtdscb-lesson .cb-process-copy,.rise-block .cb-process-copy{min-width:0;align-self:stretch}
.gtdscb-lesson .cb-process-step-label,.rise-block .cb-process-step-label{display:block;font-size:12px;line-height:1.4;font-weight:750;letter-spacing:.065em;color:var(--cb-accent,var(--rise-accent,#6745a2));margin:0 0 12px}
.gtdscb-lesson .cb-process-slide h3,.rise-block .rise-process-step h3{font-size:clamp(20px,2.3vw,28px)!important;line-height:1.32;margin:0 0 12px!important}
.gtdscb-lesson .cb-process-description,.rise-block .rise-process-description{font-size:clamp(15px,1.35vw,18px);line-height:1.55}
.gtdscb-lesson .cb-process-visual,.rise-block .cb-process-visual{min-width:0;display:flex;align-items:center;justify-content:center}
.gtdscb-lesson .cb-process-media,.rise-block .rise-process-media{display:block!important;object-fit:contain!important;max-width:100%!important;max-height:min(64vh,530px)!important;width:auto!important;height:auto!important;margin:0 auto!important;}
.gtdscb-lesson .cb-process-layout-bottom .cb-process-copy,.rise-block .cb-process-layout-bottom .cb-process-copy{order:0}
.gtdscb-lesson .cb-process-layout-bottom .cb-process-visual,.rise-block .cb-process-layout-bottom .cb-process-visual{order:1}
.gtdscb-lesson .cb-process-layout-top .cb-process-visual,.rise-block .cb-process-layout-top .cb-process-visual{order:0}
.gtdscb-lesson .cb-process-layout-top .cb-process-copy,.rise-block .cb-process-layout-top .cb-process-copy{order:1}
@media(min-width:680px){
.gtdscb-lesson .cb-process-layout-left .cb-process-content,.gtdscb-lesson .cb-process-layout-right .cb-process-content,.rise-block .cb-process-layout-left .rise-process-content,.rise-block .cb-process-layout-right .rise-process-content{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:clamp(22px,4vw,50px)}
.gtdscb-lesson .cb-process-layout-left .cb-process-visual,.rise-block .cb-process-layout-left .cb-process-visual{grid-column:1;grid-row:1}
.gtdscb-lesson .cb-process-layout-left .cb-process-copy,.rise-block .cb-process-layout-left .cb-process-copy{grid-column:2;grid-row:1;align-self:center}
.gtdscb-lesson .cb-process-layout-right .cb-process-copy,.rise-block .cb-process-layout-right .cb-process-copy{grid-column:1;grid-row:1;align-self:center}
.gtdscb-lesson .cb-process-layout-right .cb-process-visual,.rise-block .cb-process-layout-right .cb-process-visual{grid-column:2;grid-row:1}
}
.gtdscb-lesson .cb-process-footer,.rise-block .rise-process-footer{display:grid!important;grid-template-columns:minmax(90px,1fr) auto minmax(90px,1fr);gap:12px;align-items:center;padding:16px 0 5px!important;margin:12px 0 0!important;border-top:1px solid #e9e5ee;background:transparent!important;flex-wrap:nowrap!important}
.gtdscb-lesson .cb-process-footer>button:first-child,.rise-block .rise-process-footer>button:first-child{justify-self:start}
.gtdscb-lesson .cb-process-footer>button:last-child,.rise-block .rise-process-footer>button:last-child{justify-self:end}
.gtdscb-lesson .cb-process-progress,.rise-block .rise-process-count{justify-self:center;display:flex;flex-wrap:wrap;gap:6px}
.gtdscb-lesson .cb-process-dot,.rise-block .rise-process-count button{width:31px!important;min-width:31px!important;height:31px!important;border-radius:50%!important;font-size:13px}
.gtdscb-lesson .cb-process-dot[aria-current="step"],.rise-block .rise-process-count button.active{background:var(--cb-accent,var(--rise-accent,#6745a2))!important;color:#fff!important;border-color:var(--cb-accent,var(--rise-accent,#6745a2))!important}
.gtdscb-lesson .cb-process-slide.cb-process-enter,.rise-block .rise-process-step.cb-process-enter{animation:cbProcessEnter .32s cubic-bezier(.2,.7,.25,1) both!important}
@keyframes cbProcessEnter{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:679px){.gtdscb-lesson .cb-process-content,.rise-block .rise-process-content{gap:16px}.gtdscb-lesson .cb-process-footer,.rise-block .rise-process-footer{grid-template-columns:auto minmax(0,1fr) auto;gap:4px}.gtdscb-lesson .cb-process-dot,.rise-block .rise-process-count button{width:27px!important;min-width:27px!important;height:27px!important;font-size:12px}.gtdscb-lesson .cb-process-layout-left .cb-process-visual,.gtdscb-lesson .cb-process-layout-right .cb-process-visual,.rise-block .cb-process-layout-left .cb-process-visual,.rise-block .cb-process-layout-right .cb-process-visual{order:0}.gtdscb-lesson .cb-process-layout-left .cb-process-copy,.gtdscb-lesson .cb-process-layout-right .cb-process-copy,.rise-block .cb-process-layout-left .cb-process-copy,.rise-block .cb-process-layout-right .cb-process-copy{order:1}}
@media(prefers-reduced-motion:reduce){.gtdscb-lesson .cb-process-slide.cb-process-enter,.rise-block .rise-process-step.cb-process-enter{animation:none!important}}

/* 2.4.0.7: Statement block parity. Editor is the design authority.
   Suppress styling applied by Eduma/player to the neutral block section. */
.gtdscb-lesson > section.cb-block.cb-themed {border:0!important;outline:0!important;box-shadow:none!important;border-radius:0!important;}
.gtdscb-lesson > section.cb-block.cb-callout {border:0!important;outline:0!important;box-shadow:none!important;}
.gtdscb-lesson > section.cb-block.cb-callout > .cb-callout.rise-statement {
  box-sizing:border-box;
  margin:0;
  border:0!important;
  border-left:6px solid var(--cb-accent,#6745a2)!important;
  border-radius:0!important;
  box-shadow:none!important;
  padding:28px 30px!important;
  background:#f6f4fa!important;
  color:#29262d;
}
.gtdscb-lesson > section.cb-block.cb-callout > .cb-callout.rise-statement h2 {
  font-size:25px;line-height:1.25;letter-spacing:-.02em;margin:0 0 16px!important;font-weight:700;color:inherit;
}
.gtdscb-lesson > section.cb-block.cb-callout > .cb-callout.rise-statement > div {font-size:18px;line-height:1.65;}
.gtdscb-lesson > section.cb-block.cb-callout > .cb-callout.rise-statement > div > :last-child {margin-bottom:0;}
@media(max-width:640px){.gtdscb-lesson > section.cb-block.cb-callout > .cb-callout.rise-statement{padding:20px!important;}}

/* 2.4.1.0: consistent shared lesson spacing and functional component styling */
.gtdscb-lesson{width:min(100%,var(--cb-width,860px))!important;padding:0 18px 110px;margin:auto}
.gtdscb-lesson>.cb-block{max-width:100%;margin-bottom:28px!important}
.gtdscb-lesson .cb-editorial-quote{margin:14px auto 32px;padding:28px 36px;border-top:2px solid var(--cb-accent);border-bottom:1px solid #dcd6e7;background:transparent;text-align:center}
.gtdscb-lesson .cb-editorial-quote blockquote{padding:0!important;margin:0!important;border:0!important;background:transparent!important;font-size:clamp(23px,3vw,38px);font-weight:500;font-family:Georgia,serif;line-height:1.42}
.gtdscb-lesson .cb-editorial-quote figcaption{font-size:14px;color:#766f82;margin-top:14px}
.gtdscb-lesson .cb-callout.rise-statement{border:0!important;border-left:5px solid var(--cb-accent)!important;border-radius:0!important;background:#f6f3fa!important;padding:26px 30px!important;text-align:left}
.gtdscb-lesson .cb-callout.rise-statement h2{font-size:clamp(21px,2.5vw,31px)!important;margin:0 0 10px!important}
.gtdscb-lesson .cb-audio-player{width:100%;display:flex;justify-content:center}
.gtdscb-lesson .cb-audio-player audio{display:block;width:100%;max-width:100%;min-width:0}
.gtdscb-lesson .cb-video{display:block;width:100%;height:auto;max-height:none}
.gtdscb-lesson .cb-universal-embed{width:100%;min-height:320px;overflow:auto}
.gtdscb-lesson .cb-universal-embed iframe{width:100%;min-height:460px;display:block;border:0}
.gtdscb-lesson .cb-continue{display:block;margin:20px auto;width:100%;appearance:none;cursor:pointer;border:0;font:inherit;font-weight:700}
.gtdscb-lesson .cb-continue:focus-visible{outline:3px solid var(--cb-accent);outline-offset:3px}
.gtdscb-lesson section[hidden],.gtdscb-lesson [hidden]{display:none!important}
.gtdscb-lesson .cb-checklist{width:100%;grid-template-columns:minmax(0,1fr)!important}
.gtdscb-lesson .cb-checklist li{width:100%;display:block!important;border-bottom:1px solid #e9e5ed;padding:10px 0}
.gtdscb-lesson .cb-checklist li label{display:flex;align-items:flex-start;gap:14px;width:100%;cursor:pointer}
.gtdscb-lesson .cb-checklist input{width:19px;height:19px;margin-top:4px;accent-color:var(--cb-accent)}
.gtdscb-lesson .cb-checklist li>div{padding-left:33px}
.gtdscb-lesson .cb-labeled-stage{position:relative;overflow:visible!important;min-height:0!important;line-height:0}
.gtdscb-lesson .cb-labeled-stage>img{height:auto;width:100%;object-fit:contain!important}
.gtdscb-lesson .cb-labeled .cb-marker{position:absolute!important;transform:translate(-50%,-50%)!important;width:42px!important;height:42px!important;display:grid!important;place-items:center;line-height:1!important;z-index:5;border:4px solid #fff!important;box-shadow:0 3px 14px #0004;cursor:pointer}
.gtdscb-lesson .cb-marker-panel{position:relative;z-index:10;border:1px solid #ded8e9;border-radius:12px;padding:20px;margin-top:10px;line-height:1.5}
.gtdscb-lesson .cb-marker-close{float:right;cursor:pointer;background:transparent;border:0;font-size:24px}
.gtdscb-lesson .cb-marker-data{display:none!important}
.gtdscb-lesson .cb-multi,.gtdscb-lesson .cb-quiz,.gtdscb-lesson .cb-scenario,.gtdscb-lesson .cb-matching,.gtdscb-lesson .cb-fill,.gtdscb-lesson .cb-question-bank{padding:clamp(18px,3vw,32px);background:#faf9fc;border:1px solid #e9e5ee;border-radius:12px}
.gtdscb-lesson .cb-scenario-choice{display:block;width:100%;margin:9px 0;text-align:left;cursor:pointer;border:1px solid #d8d2e0;border-radius:8px;background:#fff;color:#262332;padding:16px}
.gtdscb-lesson .cb-scenario-choice:hover,.gtdscb-lesson .cb-scenario-choice.cb-selected{border-color:var(--cb-accent);background:#f3eefb}
.gtdscb-lesson .cb-scenario-restart{margin-top:14px}
.gtdscb-lesson .cb-feedback.cb-feedback-visible,.gtdscb-lesson .cb-feedback:not(:empty){padding:14px 18px;margin:14px 0 0;border:1px solid #dfd3ef;border-left:4px solid var(--cb-accent);background:#f4effb;color:#292431;border-radius:8px;line-height:1.5}
.gtdscb-lesson .cb-feedback[data-ok="1"]{background:#eef8f3;border-color:#b9decf;border-left-color:#268b61}
.gtdscb-lesson .cb-match-pair{display:grid;grid-template-columns:minmax(120px,1fr) minmax(160px,1.4fr);gap:20px;align-items:center;margin:10px 0;padding:10px 0;border-bottom:1px solid #eee}
.gtdscb-lesson .cb-match-pair select{width:100%;min-width:0;padding:12px;border:1px solid #ccc;border-radius:6px;background:white}
.gtdscb-lesson .cb-simple-carousel{width:100%;max-width:100%;overflow:visible!important}
.gtdscb-lesson .cb-simple-carousel .cb-carousel-track>*{width:100%;max-width:100%;min-width:0}
.gtdscb-lesson .cb-carousel-nav{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:14px}
.gtdscb-lesson .cb-stack{max-width:min(100%,var(--cb-stack-w,760px));margin-inline:auto}
.gtdscb-lesson .cb-stack .cb-flashcard{height:var(--cb-stack-h,420px)!important;min-height:var(--cb-stack-h,420px)!important;width:100%;max-width:100%}
.gtdscb-lesson .cb-stack .cb-flip-image{max-height:100%;object-fit:contain}
.gtdscb-lesson .cb-question-bank .cb-drawn-question input{display:block;width:100%;padding:12px;margin:10px 0;border:1px solid #d5cedf;border-radius:8px}
@media(max-width:640px){.gtdscb-lesson{padding-inline:12px}.gtdscb-lesson .cb-match-pair{grid-template-columns:1fr;gap:8px}.gtdscb-lesson .cb-editorial-quote{padding:20px 14px}.gtdscb-lesson .cb-stack .cb-flashcard{height:min(65vh,var(--cb-stack-h,420px))!important;min-height:300px!important}}

.gtdscb-lesson .cb-numbered-divider{display:flex;align-items:center;gap:20px;border:0!important;padding:22px 0;margin:16px 0}
.gtdscb-lesson .cb-numbered-marker{font-size:clamp(27px,4vw,45px);font-weight:750;line-height:1;color:var(--cb-accent)}
.gtdscb-lesson .cb-numbered-rule{width:60px;flex:0 0 60px;height:2px;background:var(--cb-accent)}
.gtdscb-lesson .cb-numbered-copy{font-size:clamp(20px,2.6vw,29px);font-weight:650;line-height:1.3}
.gtdscb-lesson .cb-table-wrap{max-width:100%;overflow-x:auto}.gtdscb-lesson .cb-table-wrap table{border-collapse:collapse;min-width:min(100%,580px);width:100%}.gtdscb-lesson .cb-table-wrap th,.gtdscb-lesson .cb-table-wrap td{padding:13px 16px;border:1px solid #e5e1ec;text-align:left}.gtdscb-lesson .cb-table-wrap thead{background:#f5f1fa}
.gtdscb-lesson .cb-rise-sort{padding:22px 0;max-width:760px;margin:0 auto;text-align:center}
.gtdscb-lesson .cb-sort-help{color:#635d6b;font-size:15px}
.gtdscb-lesson .cb-sort-active-card{background:#fff;border:1px solid #d9d4e2;border-radius:12px;min-height:130px;margin:24px auto;padding:30px 24px;display:flex;align-items:center;justify-content:center;font-size:clamp(19px,2.5vw,27px);font-weight:700;box-shadow:0 8px 30px #28194a12;cursor:grab;max-width:540px}
.gtdscb-lesson .cb-sort-bin-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:12px;margin-top:20px}
.gtdscb-lesson .cb-sort-bin{min-height:90px;border:2px dashed #bcb1d1;border-radius:10px;background:#f7f4fa;color:#372d4b;font:inherit;font-weight:650;cursor:pointer;padding:12px}
.gtdscb-lesson .cb-sort-bin:hover,.gtdscb-lesson .cb-sort-bin.cb-sort-hover{border-style:solid;border-color:var(--cb-accent);background:#eee8f8}
.gtdscb-lesson .cb-sort-live{min-height:32px;margin:16px auto;font-weight:550;color:#55476e}
.gtdscb-lesson .cb-sort-success{border-color:#258763;background:#eefaf2}.gtdscb-lesson .cb-sort-shake{animation:cbSortShake .25s linear}
@keyframes cbSortShake{0%,100%{transform:translateX(0)}20%,60%{transform:translateX(-8px)}40%,80%{transform:translateX(8px)}}
@media(prefers-reduced-motion:reduce){.gtdscb-lesson .cb-sort-shake{animation:none}}


/* v2.4.2.0: learner parity and interaction stability */
.gtdscb-lesson [hidden]{display:none!important}
.gtdscb-lesson .cb-block{min-width:0;box-sizing:border-box}
.gtdscb-lesson .cb-block:not(.cb-spacer){scroll-margin-top:80px}
.gtdscb-lesson .cb-themed{padding:var(--cb-pad,30px) clamp(0px,2vw,22px)}
.gtdscb-lesson .cb-callout.rise-statement{border:0!important;border-left:5px solid var(--cb-accent)!important;border-radius:0 12px 12px 0!important;padding:clamp(20px,3vw,36px)!important;background:color-mix(in srgb,var(--cb-accent) 7%,white)!important;box-shadow:none!important}
.gtdscb-lesson .cb-editorial-quote{margin:0;padding:clamp(16px,4vw,44px) clamp(12px,6vw,65px);border-top:1px solid #dad5e3;border-bottom:1px solid #dad5e3;text-align:center}
.gtdscb-lesson .cb-editorial-quote blockquote{font-size:clamp(24px,3.3vw,40px);font-weight:450;line-height:1.4;border:0!important;background:none!important;padding:0!important;margin:0!important;font-style:italic}
.gtdscb-lesson .cb-editorial-quote blockquote:before{content:'“';display:block;color:var(--cb-accent);font-size:58px;line-height:1}
.gtdscb-lesson .cb-editorial-quote figcaption{margin-top:18px;color:#726c7d;font-size:14px}
.gtdscb-lesson .cb-marker{display:grid!important;place-items:center!important;padding:0!important;line-height:1!important;aspect-ratio:1!important;min-width:42px!important;min-height:42px!important;transform:translate(-50%,-50%)!important;z-index:7!important}
.gtdscb-lesson .cb-labeled-stage{isolation:isolate}
.gtdscb-lesson .cb-universal-embed{width:100%;overflow:visible}
.gtdscb-lesson .cb-universal-embed iframe{display:block;width:100%;height:clamp(420px,56vw,720px);border:0;overflow:auto}
.gtdscb-lesson .cb-feedback.cb-feedback-visible{display:block;border:1px solid color-mix(in srgb,var(--cb-accent) 22%,white);border-left:4px solid var(--cb-accent);background:#f7f4fc;color:#252333;border-radius:8px;padding:16px 19px;margin-top:16px;font-weight:450;line-height:1.6}
.gtdscb-lesson .cb-feedback[data-ok='1']{border-left-color:#23875c;background:#f0faf5;color:#18583e}
.gtdscb-lesson .cb-feedback[data-ok='0']{border-left-color:#c06940;background:#fff7f0;color:#81401f}
.gtdscb-lesson .cb-checklist{width:100%!important;max-width:none!important;display:grid;gap:12px}
.gtdscb-lesson .cb-checklist li{width:100%;min-width:0}
.gtdscb-lesson .cb-stack{width:min(100%,var(--cb-stack-w,760px));margin-inline:auto}
.gtdscb-lesson .cb-stack .cb-flashcard{max-width:100%;width:100%;min-height:var(--cb-stack-h,420px)}
.gtdscb-lesson .cb-simple-carousel .cb-carousel-track>*{display:block;width:100%}
.gtdscb-lesson .cb-simple-carousel .cb-carousel-nav button{cursor:pointer;color:var(--cb-accent);background:transparent;border:0;font-weight:650}
.gtdscb-lesson .cb-continue{position:relative;z-index:2;width:100%;border-radius:6px}
@media(max-width:640px){.gtdscb-lesson .cb-themed{padding:var(--cb-pad,20px) 10px}.gtdscb-lesson .cb-marker{min-width:36px!important;min-height:36px!important;width:36px!important;height:36px!important}}


/* consolidated learner interaction components */
.gtdscb-lesson [hidden]{display:none!important}
.gtdscb-lesson .cb-matching-board{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;margin:22px 0}
.gtdscb-lesson .cb-match-targets,.gtdscb-lesson .cb-match-cards{display:flex;flex-direction:column;gap:12px}
.gtdscb-lesson .cb-match-target{border:1px solid #e1dbe9;border-radius:12px;padding:14px;background:#fff}
.gtdscb-lesson .cb-match-drop{padding:16px;border:2px dashed #ded5ed;border-radius:10px;background:#f9f7fc;min-height:55px;margin-top:10px;cursor:pointer}
.gtdscb-lesson .cb-match-drop.is-filled{border-style:solid;border-color:var(--cb-accent);background:#f3effa}
.gtdscb-lesson .cb-match-target select{width:100%;margin-top:10px;max-width:100%}
.gtdscb-lesson .cb-match-card{border:1px solid #ddd3ea;background:white;text-align:left;padding:18px;border-radius:12px;cursor:grab;white-space:normal}
.gtdscb-lesson .cb-match-card.is-selected{outline:3px solid var(--cb-accent)}
.gtdscb-lesson .cb-feedback.cb-feedback-visible{display:block;padding:16px 20px;border-left:5px solid var(--cb-accent);border-radius:8px;background:#f7f2fc;line-height:1.6}
.gtdscb-lesson .cb-feedback[data-ok="1"]{background:#eef9f2;border-left-color:#207d50}
.gtdscb-lesson .cb-feedback[data-ok="0"]{background:#fff5ed;border-left-color:#b75a23}
.gtdscb-lesson .cb-marker{display:grid!important;place-items:center!important;width:42px!important;height:42px!important;padding:0!important;line-height:1!important;transform:translate(-50%,-50%)!important}
.gtdscb-lesson .cb-continue{cursor:pointer;display:block;width:100%;pointer-events:auto}
.gtdscb-lesson .cb-audio-player audio{display:block;width:100%;margin-inline:auto}
.gtdscb-lesson .cb-checklist{max-width:none!important;width:100%!important}
.gtdscb-lesson .cb-block{box-sizing:border-box;min-width:0}
.gtdscb-lesson .cb-block:not(.cb-spacer){margin-block:clamp(18px,3vw,38px)}
@media(max-width:680px){.gtdscb-lesson .cb-matching-board{grid-template-columns:1fr}}

/* 2.4.4.0 consistent content spacing, preserving each block's authored padding value. */
.gtdscb-lesson > section.cb-block.cb-themed:not(.cb-spacer){
  padding-block:var(--cb-pad,30px)!important;
  padding-inline:clamp(20px,3.6vw,42px)!important;
  margin-block:0!important;
  width:100%;
}
.gtdscb-lesson > section.cb-block.cb-themed:not(.cb-spacer) + section.cb-block.cb-themed:not(.cb-spacer){margin-top:10px!important}
.gtdscb-lesson > section.cb-block.cb-themed > :first-child{margin-top:0!important}
.gtdscb-lesson > section.cb-block.cb-themed > :last-child{margin-bottom:0!important}
.gtdscb-lesson .cb-labeled-stage{overflow:visible;isolation:isolate}
.gtdscb-lesson .cb-labeled-stage .cb-marker{z-index:2;transition:background-color .17s,box-shadow .17s,scale .17s,border-color .17s}
.gtdscb-lesson .cb-labeled-stage .cb-marker.is-active,
.gtdscb-lesson .cb-labeled-stage .cb-marker[aria-pressed="true"]{
  background:#fff!important;color:var(--cb-accent,#6745a2)!important;
  border-color:var(--cb-accent,#6745a2)!important;
  box-shadow:0 0 0 5px color-mix(in srgb,var(--cb-accent,#6745a2) 24%,transparent),0 5px 18px #1d12353b!important;
  z-index:4;
}
.gtdscb-lesson .cb-labeled-stage .cb-marker.is-active::after{content:'';position:absolute;inset:-12px;border:2px solid var(--cb-accent,#6745a2);border-radius:50%;pointer-events:none}
.gtdscb-lesson .cb-marker-panel:not([hidden]){margin-top:18px;padding:24px;border-radius:12px;border:1px solid #dcd4e9;box-shadow:0 6px 22px #26163d10}
.gtdscb-lesson .cb-marker-panel h3{margin:0 0 10px}
@media(max-width:640px){.gtdscb-lesson > section.cb-block.cb-themed:not(.cb-spacer){padding-inline:18px!important}}