.lab-page{max-width:1280px;margin:auto;color:#123d40}.lab-heading{max-width:960px;margin:26px 0}.lab-heading h1{font-size:clamp(26px,3.2vw,42px);line-height:1.15;letter-spacing:-.025em;margin:12px 0}.lab-heading p{line-height:1.65;color:#496469}.lab-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.lab-card{display:block;color:inherit;text-decoration:none;background:white;border:1px solid #d3e0dc;border-radius:18px;overflow:hidden;box-shadow:0 8px 30px #123d4007;transition:transform .18s}.lab-card:hover{transform:translateY(-3px)}.lab-card>div:last-child{padding:20px 24px}.lab-card h2{font-size:23px;margin:9px 0}.lab-card p{font-size:14px;color:#496469;margin:8px 0 16px}.lab-card span{font-size:12px}.lab-card strong{font-size:14px}.lab-breadcrumb,.lab-reading-actions,.lab-downloads{display:flex;flex-wrap:wrap;gap:16px;align-items:center}.lab-breadcrumb{justify-content:space-between}.lab-reading-actions{margin:24px 0}.lab-downloads{margin:18px 0}.lab-downloads a{color:#07535b;text-decoration:underline;font-size:14px}.lab-footer{margin-top:28px;padding:24px 0;border-top:1px solid #d1ddd9;display:flex;gap:22px;align-items:center;flex-wrap:wrap}.lab-footer p{flex-basis:100%;font-size:13px;color:#52696d}.lab-progress{background:#e7f2ec;padding:12px 18px;border-radius:9px}
.lab-player{background:#fff;border:1px solid #cedfd8;border-radius:18px;overflow:hidden;box-shadow:0 12px 40px #123d4009}.lab-scene{position:relative;aspect-ratio:16/9;isolation:isolate;overflow:hidden;background:#073f46}.lab-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}.lab-visual{position:absolute;top:5%;right:2%;width:45%;height:auto;max-height:64%;filter:drop-shadow(0 8px 18px #002e3440);border-radius:12px}.lab-captions{position:absolute;left:9%;right:9%;bottom:2.5%;display:grid;gap:5px;text-align:center;pointer-events:none;color:white;font-family:Arial,sans-serif;text-shadow:0 1px 3px #000,1px 1px 6px #000,0 0 16px #000;line-height:1.2}.lab-captions p{margin:0;overflow:hidden;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;font-size:clamp(14px,1.8vw,24px);font-weight:600;min-height:1.2em}.lab-captions [data-lab-caption=previous],.lab-captions [data-lab-caption=next]{opacity:.5;font-size:clamp(12px,1.45vw,19px)}.lab-captions-off .lab-captions{visibility:hidden}.lab-player:not(.has-started) .lab-captions{visibility:hidden}.lab-cover-button{position:absolute;inset:0;border:0;padding:0;width:100%;height:100%;text-align:left;cursor:pointer;background:#073f46}.has-started .lab-cover-button{display:none}.lab-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#073f46;width:100%;height:100%;isolation:isolate}.lab-cover__photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.lab-cover__shade{position:absolute;inset:0;background:linear-gradient(90deg,#052e39ea 0%,#052e39b0 37%,#052e3920 80%),linear-gradient(0deg,#052e3990,transparent 65%)}.lab-cover__number{position:absolute;top:8%;left:5%;color:#c8f24f;letter-spacing:.12em;font-size:clamp(11px,1.3vw,18px)!important;font-weight:750}.lab-cover .lab-cover__question{position:absolute;left:5%;top:22%;width:52%;font-size:clamp(22px,4vw,49px);line-height:1.12;color:#fff;font-weight:750;letter-spacing:-.025em;text-wrap:balance}.lab-cover__cutout{position:absolute;right:3%;top:8%;width:25%;height:37%;transform:rotate(7deg);border:7px solid #faf7ee;box-shadow:0 8px 20px #0005;overflow:hidden}.lab-cover__cutout img{width:100%;height:100%;object-fit:cover;object-position:20% center}.lab-cover__model{position:absolute;right:5%;bottom:9%;width:33%;transform:rotate(-6deg);background:#f4f7f4;border:5px solid #f4f7f4;box-shadow:0 10px 25px #0004}.lab-cover__model img{width:100%;height:auto;display:block}.lab-cover__play{position:absolute;left:6%;bottom:11%;height:52px;width:64px;border-radius:16px;display:grid;place-items:center;background:#c8f24f;color:#073f46;font-size:25px!important;box-shadow:0 5px 18px #0003}.lab-cover--small .lab-cover__question{font-size:clamp(23px,2.6vw,32px)}.lab-cover--small .lab-cover__number{font-size:11px!important}.lab-cover--small .lab-cover__play{width:44px;height:34px;border-radius:10px;font-size:17px!important}
.lab-transport{padding:15px 20px 4px}.lab-timeline{position:relative;height:28px;margin-bottom:6px}.lab-timeline input{width:100%;height:8px;margin:7px 0;accent-color:#07535b;position:relative;z-index:2;cursor:pointer}.lab-markers{position:absolute;inset:7px 8px auto;height:8px;pointer-events:none;z-index:3}.lab-markers button{position:absolute;border:0;padding:0;top:0;height:8px;width:3px;background:#ccaf52;pointer-events:auto;cursor:pointer}.lab-controls{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.lab-controls button,.lab-deck-toolbar button{border:1px solid #cadaD3;background:#f5f8f4;border-radius:9px;min-width:40px;min-height:40px;font-weight:650;color:#123d40;cursor:pointer}.lab-buttons{display:flex;gap:7px}.lab-controls .lab-play{background:#07535b;color:white;min-width:54px;border-color:#07535b}.lab-controls button:disabled,.lab-deck-toolbar button:disabled{opacity:.35;cursor:default}.lab-time{font-size:13px;font-variant-numeric:tabular-nums;white-space:nowrap}.lab-speed{display:grid;grid-template-columns:1fr auto;width:260px;margin-left:auto;font-size:12px;gap:4px}.lab-speed input,.lab-speed>span{grid-column:1/-1;width:100%;margin:0;accent-color:#07535b}.lab-speed>span{display:flex;justify-content:space-between;font-size:10px}.lab-speed i{font-style:normal}.lab-cue-label{display:flex;gap:14px;align-items:center;font-size:12px;margin:16px 0 7px;color:#496469}.lab-cue-label select{flex:1;min-width:0;padding:8px;border:1px solid #d0ddd7;border-radius:8px;background:white;color:#123d40}.lab-status{font-size:12px;color:#546e6e;min-height:18px;margin:8px 0}.lab-deck{border-top:1px solid #d1dfd8}.lab-deck>summary{padding:18px 22px;font-weight:700;cursor:pointer;list-style-position:inside}.lab-deck>summary small{font-weight:400;float:right;font-size:12px;color:#53706d}.lab-deck-toolbar{display:flex;gap:9px;align-items:center;padding:4px 16px 15px}.lab-deck-toolbar select{min-width:0;flex:1;padding:9px;background:#fff;border:1px solid #d1dfd8;border-radius:8px}.lab-deck-toolbar [data-lab-action=sync]{padding:6px 12px;font-size:12px}.lab-deck-toolbar [aria-pressed=true]{background:#e0f0d9;border-color:#abc999}.lab-deck>img{display:block;width:100%;height:auto;border-top:1px solid #d1dfd8}.lab-deck-files{padding:15px 22px;font-size:14px}.lab-deck-files summary{cursor:pointer}.lab-application,.lab-quiz,.lab-transcript,.lab-sources{border:1px solid #d1dfd8;border-radius:12px;background:#fff;margin:16px 0;padding:18px 22px}.lab-page details>summary{cursor:pointer;font-weight:650}.lab-application>p,.lab-application details p,.lab-transcript p{line-height:1.75;color:#405f60}.lab-field{display:grid;gap:8px;margin:24px 0}.lab-field span{font-size:14px;line-height:1.6;color:#496769}.lab-field textarea{width:100%;resize:vertical;border:1px solid #bdcfc8;border-radius:8px;padding:14px;background:#fbfdfb;color:#143f42;line-height:1.65;box-sizing:border-box;font:inherit}.lab-quiz fieldset{border:0;border-top:1px solid #d1dfd8;margin:20px 0;padding:20px 0}.lab-quiz legend{font-weight:650;padding-top:14px}.lab-quiz label{display:block;padding:9px 0;line-height:1.5}.lab-quiz [role=status]{padding:14px;background:#e8f2e8;line-height:1.7;border-radius:8px}.lab-transcript h3{font-size:19px;margin:26px 0 10px}.lab-sources li{margin:12px 0;line-height:1.5}
.lab-modal-open{overflow:hidden}.lab-dialog{padding:0;border:1px solid #bed0c7;border-radius:18px;width:min(980px,94vw);height:90dvh;max-height:94dvh;color:#123d40;background:#fff;box-shadow:0 15px 100px #00171e66}.lab-dialog::backdrop{background:#092e3bb0}.lab-dialog>header{position:sticky;top:0;z-index:5;background:#f5f9f2;border-bottom:1px solid #d0dfd7;display:flex;align-items:center;justify-content:space-between;gap:15px;padding:15px 22px}.lab-dialog h2{margin:0;font-size:20px}.lab-dialog>header button{background:white;border:1px solid #b3c9bf;border-radius:8px;padding:10px 14px;color:#123d40;cursor:pointer;white-space:nowrap}.lab-dialog-body{padding:28px 42px}.lab-chapter{max-width:780px;margin:auto;line-height:1.85;overflow-wrap:anywhere}.lab-chapter h1{font-size:32px;line-height:1.2}.lab-chapter h2{font-size:25px;line-height:1.3;margin:36px 0 16px}.lab-chapter h3{font-size:19px;line-height:1.4;margin:25px 0 8px}.lab-chapter p{font-size:17px}.lab-chapter figure{margin:24px 0;padding:10px;background:#f5f8f4;border-radius:12px}.lab-chapter figure img{display:block;width:100%;max-width:670px;margin:auto}.lab-chapter figcaption{font-size:13px;line-height:1.5;padding:10px 12px;color:#4e666a}.lab-table-scroll{overflow:auto;margin:24px 0;max-width:100%}.lab-table-scroll table{width:100%;border-collapse:collapse;min-width:480px;line-height:1.6}.lab-table-scroll th,.lab-table-scroll td{border:1px solid #c9d9d0;padding:12px;text-align:left;vertical-align:top}.lab-table-scroll th{background:#d9f0ed}.lab-dialog--player{width:min(1500px,97vw);height:94dvh}.lab-dialog--player .lab-dialog-body{padding:10px}.lab-dialog--player .lab-player{max-width:1250px;margin:auto;box-shadow:none}.lab-page :focus-visible,.lab-dialog :focus-visible{outline:3px solid #b77912;outline-offset:3px}
@media(max-width:720px){.lab-grid{grid-template-columns:1fr;gap:18px}.lab-page{padding:18px!important}.lab-heading{margin:20px 0}.lab-breadcrumb{font-size:12px;gap:10px}.lab-scene{aspect-ratio:4/5}.lab-photo{object-position:25% center}.lab-visual{top:30%;left:3%;right:3%;width:94%;max-height:48%;object-fit:contain}.lab-captions{bottom:2%;left:4%;right:4%;gap:4px}.lab-captions p{font-size:17px;line-height:1.2}.lab-captions [data-lab-caption=previous],.lab-captions [data-lab-caption=next]{font-size:13px}.lab-cover__photo{object-position:25% center}.lab-cover .lab-cover__question{font-size:clamp(29px,7vw,42px);top:15%;width:85%;left:6%}.lab-cover__number{top:6%;left:6%}.lab-cover__model{width:50%;bottom:14%;right:6%}.lab-cover__cutout{top:47%;left:7%;right:auto;width:36%;height:24%;transform:rotate(-5deg)}.lab-cover__play{bottom:8%;left:9%}.lab-cover--small .lab-cover__question{font-size:clamp(24px,6vw,35px);width:56%;top:23%}.lab-cover--small .lab-cover__model{width:34%;right:4%;bottom:9%}.lab-cover--small .lab-cover__cutout{left:auto;right:4%;top:9%;width:25%;height:34%;transform:rotate(7deg)}.lab-cover--small .lab-cover__number{font-size:9px!important}.lab-transport{padding:14px 12px 4px}.lab-controls{gap:8px}.lab-speed{width:100%;order:6;max-width:none;margin:7px 0 0}.lab-speed input{height:23px}.lab-speed>span{font-size:11px}.lab-time{flex:1;font-size:12px}.lab-controls button{min-width:34px;min-height:38px}.lab-buttons{gap:4px}.lab-controls .lab-play{min-width:43px}.lab-cue-label{display:block}.lab-cue-label select{display:block;width:100%;margin-top:5px;font-size:12px}.lab-deck>summary small{float:none;display:block;padding-left:16px;margin-top:5px}.lab-deck-toolbar{flex-wrap:wrap}.lab-deck-toolbar select{width:calc(100% - 110px)}.lab-deck-toolbar [data-lab-action=sync]{margin-left:auto}.lab-application,.lab-quiz,.lab-transcript,.lab-sources{padding:17px 15px}.lab-reading-actions{gap:10px}.lab-reading-actions>*{width:100%;justify-content:center}.lab-dialog{width:96vw;height:94dvh;border-radius:12px}.lab-dialog>header{padding:12px 14px}.lab-dialog>header h2{font-size:17px}.lab-dialog-body{padding:18px}.lab-chapter p{font-size:16px}.lab-chapter h1{font-size:27px}.lab-chapter h2{font-size:22px}.lab-dialog--player .lab-dialog-body{padding:0}.lab-dialog--player .lab-player{border-radius:0}.lab-card>div:last-child{padding:17px 19px}}
@media(prefers-reduced-motion:reduce){.lab-card{transition:none}.lab-card:hover{transform:none}}
@media(max-width:360px){.lab-captions p{font-size:16px}}
.lab-card>.lab-cover{height:auto;aspect-ratio:16/9}
.lab-captions p{text-wrap:balance}
@media(max-width:720px){.lab-scene{aspect-ratio:3/4}.lab-visual{top:22%;height:45%}.lab-visual>img{height:100%!important;object-fit:contain}}
.lab-visual{padding:0;border:0;background:transparent;cursor:zoom-in}.lab-visual>img{display:block;width:100%;height:auto;border-radius:12px}.lab-visual>span{position:absolute;right:10px;bottom:-7px;padding:3px 7px;font-size:10px;background:#fff;color:#07535b;border:1px solid #b9cec7;border-radius:5px}.lab-diagram-zoom{overflow:auto;max-width:100%;border:1px solid #d4e1db;border-radius:10px;background:#f5f8f4}.lab-diagram-zoom img{display:block;min-width:720px;width:100%;height:auto;max-width:none}.lab-dialog--diagram .lab-dialog-body>p{line-height:1.6}
.lab-cover--small .lab-cover__question{font-size:clamp(17px,2.1vw,28px);width:59%;top:21%}@media(max-width:720px){.lab-cover--small .lab-cover__question{font-size:clamp(17px,4.8vw,26px);width:59%;top:21%}}
.lab-scene-toggle{display:none;position:absolute;z-index:4;top:14px;left:14px;align-items:center;gap:8px;min-height:44px;padding:10px 14px;color:#fff;background:#052e39dd;border:1px solid #d1e5df80;border-radius:11px;font-size:14px;font-weight:700;cursor:pointer;box-shadow:0 3px 14px #052e3930}
.lab-player.has-started .lab-scene-toggle{display:inline-flex}
.lab-controls .lab-play{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 12px;min-height:44px;min-width:100px;font-size:13px}
.lab-scene-toggle svg,.lab-play svg{display:block;flex:none}
.lab-scene--foundation .lab-photo{object-position:center}
.lab-player,.lab-scene{scroll-margin-top:90px}
/* A constant portrait frame keeps all three caption lines clear and avoids a
   height jump when the introduction changes to the existing case sections. */
@media(max-width:720px){.lab-player .lab-scene{aspect-ratio:9/14}}
@media(max-width:360px){.lab-player .lab-scene{aspect-ratio:9/16}}
@media(max-width:720px){.lab-scene-toggle{top:10px;left:10px;padding:8px 11px;font-size:13px}.lab-controls .lab-play{min-width:82px;padding:8px}.lab-controls{display:grid;grid-template-columns:auto 1fr auto auto;gap:6px}.lab-time{font-size:10px}.lab-controls .lab-speed{grid-column:1/-1;order:6}.lab-scene--foundation .lab-photo{height:47%;object-fit:cover;object-position:left top}.lab-scene--foundation .lab-visual{top:28%;height:46%}.lab-scene--foundation{background:#073f46}}
.lab-context{margin:12px 24px 24px;padding:16px 18px;border-left:3px solid #a9c7bf;background:#f3f7f4;display:flex;align-items:center;justify-content:space-between;gap:18px;border-radius:0 8px 8px 0}.lab-context>div>span,.lab-portal>div>span{font-size:10px;font-weight:700;letter-spacing:.1em;color:#607970}.lab-context p{margin:4px 0 0!important;padding:0!important;font-size:13px!important;color:#234e4f!important}.lab-context nav{display:flex;gap:9px;flex-wrap:wrap;justify-content:flex-end}.lab-context a{display:inline-block;border:1px solid #c8d8cf;border-radius:6px;padding:7px 10px;color:#07535b;text-decoration:none;font-size:12px;background:#fff}.lab-context a:hover{border-color:#07535b;background:#e7f2eb}.lab-portal{margin:28px 0;padding:24px 28px;border:1px solid #d1dfd7;border-radius:12px;background:#f5f8f2;display:flex;align-items:center;gap:24px;justify-content:space-between}.lab-portal h2{font-size:22px;margin:8px 0}.lab-portal p{max-width:650px;font-size:14px;line-height:1.65;color:#4a6662;margin:8px 0 0}.lab-portal>a{flex-shrink:0}@media(max-width:720px){.lab-context{margin:10px 14px 18px;display:block;padding:13px}.lab-context nav{justify-content:flex-start;margin-top:12px}.lab-portal{display:block;padding:22px}.lab-portal>a{margin-top:18px}}