/* Shared, progressively enhanced research presentations. */
.research-deck{--deck-accent:#2e645e;background:#fff;border:1px solid #cedbd6;border-radius:8px;overflow:hidden;color:#243a3a;min-width:0;margin:24px 0;box-shadow:0 8px 30px #223b3310}
.research-deck[data-deck="instructtts"]{--deck-accent:#76573f}
.research-deck[data-deck="heartmula"]{--deck-accent:#41663b}
.research-deck:focus-visible{outline:3px solid #397a9b;outline-offset:4px}
.deck-top{display:flex;justify-content:space-between;gap:16px;background:#f1f5f2;padding:14px 28px;font-size:10px;letter-spacing:1px;color:#5c706a}
.research-slide{padding:32px 36px 22px;min-height:410px;display:flex;flex-direction:column;box-sizing:border-box}
.research-slide[hidden],.deck-controls[hidden]{display:none!important}
.research-deck .deck-kicker{font-size:10px;font-weight:700;letter-spacing:1.6px;color:var(--deck-accent);margin:0 0 15px}
.research-deck h4{font-family:Manrope,var(--sans);font-size:clamp(23px,2.4vw,32px);font-weight:600;line-height:1.25;letter-spacing:-.8px;margin:0;max-width:850px}
.research-deck .deck-lead{font-size:14px;line-height:1.7;color:#586766;max-width:800px;margin:12px 0 22px}
.deck-body{flex:1}
.deck-cards,.deck-flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:7px 0 20px}
.deck-cards>div{border-top:3px solid var(--deck-accent);background:#f4f6f2;padding:18px}
.deck-cards span,.deck-flow small{display:block;font-size:9px;letter-spacing:1px;color:var(--deck-accent);font-weight:700;margin-bottom:13px}
.deck-cards strong,.deck-flow strong{display:block;font-size:21px;line-height:1.35;font-weight:600}
.research-deck .deck-cards p{font-size:12px;line-height:1.7;margin:10px 0 0}
.deck-flow>div{border:1px solid #c5d6ce;border-radius:5px;padding:20px 16px;background:#f5f8f4;position:relative}
.deck-flow>div:not(:last-child):after{content:'→';position:absolute;right:-18px;top:43%;font-size:20px;color:var(--deck-accent)}
.deck-flow span{display:block;font-size:12px;margin-top:12px;line-height:1.6}
.research-deck .deck-takeaway{border-left:3px solid var(--deck-accent);padding:10px 16px;font-size:15px;line-height:1.6;margin:20px 0 10px;background:#f7f8f4}
.deck-source{border-top:1px solid #e0e7e2;margin-top:22px;padding-top:12px;font-size:10px;line-height:1.7;color:#62716b}
.deck-source a{text-decoration:underline;text-underline-offset:3px}
.research-deck .deck-note{font-size:11px;color:#62716b;line-height:1.65;margin:14px 0 0}
.deck-controls{padding:13px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid #d9e2dc}
.deck-tabs,.deck-arrows{display:flex;gap:7px;align-items:center}
.deck-controls button{font:inherit;font-size:11px;color:#536761;background:transparent;border:1px solid transparent;padding:10px 11px;border-radius:4px;cursor:pointer;min-height:40px}
.deck-tabs button[aria-current="step"]{background:var(--deck-accent);color:white}
.deck-controls button:hover:not(:disabled){border-color:var(--deck-accent)}
.deck-controls button:focus-visible{outline:2px solid #397a9b;outline-offset:2px}
.deck-arrows button{font-size:19px;border-color:#d5dfd8;min-width:40px}
.deck-arrows button:disabled{opacity:.3;cursor:default}
.deck-counter{font-size:11px;white-space:nowrap;min-width:34px;text-align:center}
.hierarchy{margin:12px 0 20px}.global-track{display:flex;gap:12px;align-items:center;border:1px solid #b9d1c3;border-radius:5px;background:#eef5ee;padding:19px}.global-track b,.local-track b{font-size:13px;margin-right:auto}.global-track span{font-size:12px;border:1px solid #adc8b6;background:#fff;padding:12px 15px;border-radius:4px}.hierarchy i{font-style:normal;color:#6e8b7e}.local-track{width:65%;margin:18px 0 0 auto;border-left:3px solid #91b49f;padding:12px 20px;background:#f6f7f3}.local-track div{font-size:14px;word-spacing:10px;margin:10px 0}.local-track small{font-size:11px;color:#62716b}
.prompt-board,.deck-audio-pair,.deck-output{display:grid;grid-template-columns:1fr 1fr;gap:20px}.prompt-board>div,.deck-output>div,.deck-audio-pair>div{background:#f6f5ef;border:1px solid #e1dfd3;padding:20px}.prompt-board small{font-size:10px;letter-spacing:1px;color:#7c6857}.research-deck .prompt-board p{font-size:21px;line-height:1.6;margin:14px 0 4px}.research-deck .deck-quote{font-size:14px;border-left:3px solid #b4997c;padding-left:14px;margin:0 0 18px}.deck-audio-pair strong,.deck-output strong{font-size:15px}.research-deck .deck-audio-pair p,.research-deck .deck-output p{font-size:12px;margin:9px 0;line-height:1.6}.research-deck audio{width:100%;height:38px;margin-top:10px}.deck-output a{text-decoration:underline}
.deck-table-wrap{overflow-x:auto}.deck-table{width:100%;border-collapse:collapse;font-size:13px;text-align:left}.deck-table th{font-size:11px;color:#5e7061;background:#f0f5ee}.deck-table td,.deck-table th{padding:14px 16px;border-bottom:1px solid #d8e2d3}.deck-table tr:last-child{background:#edf4e8}
.home-page .uniaudio-feature{display:block}.home-page .uniaudio-feature>.research-deck{margin:0 28px 28px}.home-page .instructtts-card{margin:24px 0}.home-page .instructtts-card .card-content{padding-bottom:0}.home-page .instructtts-card>.research-deck{margin:20px 28px 28px}.home-page .work-pair{display:block}.home-page .diffsound-card .project-demo{max-width:600px}.home-page .application-case>.research-deck{margin-bottom:0}
.presentation-gallery{padding-top:38px;padding-bottom:60px}.presentation-gallery>h1{margin:35px 0 12px;font-size:42px}.presentation-gallery>p{color:#60706a}.gallery-nav{display:flex;gap:24px;margin:24px 0 40px}.gallery-nav a{font-size:14px;text-decoration:underline}.presentation-gallery>article{margin-top:45px;scroll-margin-top:20px}.presentation-gallery>article>h2{font-size:26px;margin-bottom:8px}.presentation-gallery>article>p{font-size:14px;color:#617068}
@media(min-width:761px){.research-deck.is-ready .deck-pages{display:grid}.research-deck.is-ready .research-slide{grid-area:1/1}.research-deck.is-ready .research-slide[hidden]{display:flex!important;visibility:hidden;pointer-events:none}}
@media(max-width:760px){.research-slide{padding:24px 19px;min-height:0}.deck-top{padding:12px 19px;font-size:8px}.deck-top span:last-child{letter-spacing:0}.deck-cards,.deck-flow{grid-template-columns:1fr;gap:14px}.deck-cards>div,.deck-flow>div{padding:14px}.deck-cards strong,.deck-flow strong{font-size:19px}.deck-cards span,.deck-flow small{margin-bottom:7px}.deck-flow>div:not(:last-child):after{content:'↓';right:18px;top:auto;bottom:-18px;z-index:1}.deck-controls{padding:10px 12px;flex-wrap:wrap}.deck-tabs{flex:1;justify-content:space-between}.deck-tabs button{padding:9px 7px}.deck-tabs button span{display:block;font-size:9px;margin-top:3px}.deck-arrows{margin-left:auto}.global-track{flex-wrap:wrap;gap:6px;padding:14px}.global-track b{width:100%;margin-bottom:6px}.global-track span{padding:9px 6px;font-size:10px}.local-track{width:100%;box-sizing:border-box}.local-track div{word-spacing:2px}.prompt-board,.deck-audio-pair,.deck-output{grid-template-columns:1fr;gap:12px}.research-deck .prompt-board p{font-size:18px}.home-page .uniaudio-feature>.research-deck,.home-page .instructtts-card>.research-deck{margin:18px 12px}.deck-table td,.deck-table th{padding:11px 8px;font-size:11px}.presentation-gallery>h1{font-size:33px}}
@media(prefers-reduced-motion:no-preference){.deck-controls button{transition:background .15s,color .15s}}
/* Every selected project receives a complete introduction and its own deck. */
.research-map{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#d7dfd9;border:1px solid #d7dfd9;margin:25px 0 38px}.research-map a{background:#f2f5ef;padding:18px 15px;font-size:12px;line-height:1.6}.research-map span{display:block;font-size:10px;letter-spacing:1px;color:#5f7a6b;margin-bottom:8px}.story-group{margin-top:40px}.story-group>h2{font-size:13px;text-transform:uppercase;letter-spacing:1.5px;color:#617769;border-bottom:1px solid #ccd9ce;padding-bottom:15px;font-weight:600}.research-story{margin:22px 0 30px;background:#fff;border:1px solid #d8e0d8;border-radius:6px;overflow:hidden;scroll-margin-top:90px}.story-copy{padding:28px 30px 24px;max-width:940px}.research-story .story-meta{font-size:10px;letter-spacing:1px;color:#5b7467;margin:0 0 11px}.research-story h3{font-family:Manrope,var(--sans);font-size:27px;line-height:1.3;letter-spacing:-.6px;margin:0 0 9px}.research-story .story-subtitle{font-size:17px;line-height:1.5;color:#315e58;margin:0 0 16px}.research-story .story-intro{font-size:14px;line-height:1.9;color:#3d504b;margin:0;max-width:890px}.research-story .story-meaning{font-size:13px;line-height:1.8;color:#526b5b;padding-left:15px;border-left:2px solid #9db6a2;margin:18px 0}.research-story .work-links{margin-top:16px}.story-details{border-top:1px solid #e1e7df}.story-details>summary{padding:17px 30px;cursor:pointer;font-size:13px;color:#2f6156;list-style-position:inside;font-weight:600;background:#f8faf5}.story-details>summary span{float:right;font-size:11px;font-weight:400;color:#6b7c72}.story-details>summary:focus-visible{outline:2px solid #397a9b;outline-offset:-3px}.research-story .research-deck{margin:0;border:0;border-radius:0;box-shadow:none}.research-story>.research-deck{border-top:1px solid #d8e0d8}.application-case>h2{font-size:25px;line-height:1.4;margin:12px 0 22px}.application-case .research-story{margin-bottom:0}.ongoing-research{padding:27px 30px;border:1px dashed #95aca2;background:#f1f5f0;margin-top:24px;scroll-margin-top:90px}.ongoing-research h3{font-size:23px;margin:10px 0 14px}.ongoing-research p{font-size:14px;line-height:1.8}.ongoing-research .story-meta{font-size:10px;letter-spacing:1.4px;color:#547460}.ongoing-research .ongoing-question{margin-top:12px;color:#3c6354}.factor-diagram{display:grid;grid-template-columns:1fr 2fr 1.5fr;gap:18px;align-items:center}.factor-diagram>div{border:1px solid #b8cec1;background:#f3f7ee;padding:20px;font-size:15px;text-align:center}.factor-diagram strong{display:block;font-size:16px}.factor-diagram p{font-size:12px;margin:8px 0 20px}.factor-diagram p:last-child{margin-bottom:0}
.presentation-gallery .gallery-nav{position:static;display:flex;flex-wrap:wrap;flex-direction:row;align-items:center;gap:8px;background:none;padding:0;border:0;margin:26px 0 36px}.gallery-nav a{border:1px solid #d3dfd5;border-radius:4px;padding:9px 12px;background:#f4f7ef;text-decoration:none;font-size:12px}.gallery-nav a:hover{border-color:#527b65}.presentation-gallery>.research-story{margin:28px 0 40px}.presentation-gallery .story-copy{padding-bottom:25px}.research-deck[data-deck="diffsound"],.research-deck[data-deck="instructtts"]{--deck-accent:#76573f}.research-deck[data-deck="longcat-omni"],.research-deck[data-deck="omni-autothink"]{--deck-accent:#415f7d}
@media(max-width:760px){.research-map{grid-template-columns:1fr 1fr}.story-copy{padding:23px 20px}.research-story h3{font-size:24px}.research-story .story-subtitle{font-size:16px}.research-story .story-intro{font-size:13px}.story-details>summary{padding:15px 20px}.story-details>summary span{display:block;float:none;margin:8px 0 0 16px;line-height:1.6}.story-group>h2{font-size:11px}.factor-diagram{grid-template-columns:1fr}.ongoing-research{padding:22px 20px}.presentation-gallery .gallery-nav{gap:6px}.gallery-nav a{font-size:11px;padding:8px 9px}}
@media print{.story-details:not([open])>.research-deck{display:block}.research-slide[hidden],.research-deck.is-ready .research-slide[hidden]{display:flex!important;visibility:visible!important}.research-deck.is-ready .deck-pages{display:block}.deck-controls,.gallery-nav{display:none}.research-slide{break-inside:avoid}.research-story{break-inside:auto}}
/* Selected work: five series in the author's requested order. */
.research-map{grid-template-columns:repeat(5,minmax(0,1fr))}.story-group-intro{font-size:14px;line-height:1.8;color:#536d60;margin:16px 0 24px;max-width:900px}.gallery-group{margin-top:45px}.gallery-group>h2{font-size:23px;line-height:1.4;color:#365e50;margin:0 0 20px}.gallery-group .research-story{margin-top:24px}.research-deck[data-deck="make-an-audio"]{--deck-accent:#76573f}
@media(max-width:760px){.research-map{grid-template-columns:1fr 1fr}.research-map a:last-child{grid-column:1/-1}.story-group-intro{font-size:13px}.gallery-group>h2{font-size:21px}}
/* UniAudio 1.0: four visual arguments, with matched experimental evidence. */
[data-deck="uniaudio"] .deck-lead{max-width:900px}
.ua-taskmap{display:grid;grid-template-columns:1fr 1.25fr;gap:30px;align-items:center;margin:8px 0 26px}.ua-examples{display:grid;gap:9px}.ua-examples>div{display:grid;grid-template-columns:1fr 25px 1fr;align-items:center;padding:13px 15px;background:#f0f4f1;border-radius:4px;font-size:13px}.ua-examples i,.ua-global i,.ua-local i{font-style:normal;color:#78958b;text-align:center}.ua-examples b{font-weight:600}.ua-shared{border-left:3px solid #2e645e;padding:18px 22px;background:#edf5f0}.ua-shared small,.ua-panel>small,.ua-origin small,.ua-adoptions small,.ua-local small{display:block;font-size:9px;font-weight:700;letter-spacing:1px;color:#52766b}.ua-sequence{display:flex;gap:5px;margin:18px 0}.ua-sequence>*{padding:12px 8px;font-size:11px;background:white;border:1px solid #bdd0c6;border-radius:3px}.ua-sequence strong{background:#2e645e;color:white;border-color:#2e645e}.research-deck .ua-shared p{font-size:13px;line-height:1.7;margin:0}.ua-bottom{display:flex;align-items:center;gap:30px;border-top:1px solid #d9e4dd;padding-top:18px}.ua-bottom>strong{font-size:32px;white-space:nowrap;color:#2e645e;line-height:1.2}.ua-bottom>strong span{display:block;font-size:10px;font-weight:500;color:#63766d;margin-top:6px}.research-deck .ua-bottom p{margin:0 0 0 auto;max-width:280px;font-size:15px;line-height:1.6}.ua-line-label{display:flex;justify-content:space-between;gap:15px;font-size:12px;margin-bottom:12px}.ua-line-label>span{color:#61766c;font-size:11px}.ua-tokenrow{display:grid;grid-template-columns:repeat(12,1fr);gap:4px}.ua-tokenrow span{padding:9px 0;border:1px solid #dbd7ce;text-align:center;font-size:10px;border-radius:3px;background:#f2f0e9}.ua-tokenrow .ua-c2{background:#e9e8e0}.ua-tokenrow .ua-c3{background:#dddfd7}.research-deck .ua-flat p{font-size:11px;color:#6c756d;margin:8px 0 18px}.ua-hierarchy{background:#f0f6f1;border:1px solid #c4d9cc;padding:17px 19px;border-radius:5px}.ua-global{display:flex;gap:9px;align-items:center}.ua-global small{font-size:9px;line-height:1.5;min-width:83px;color:#547568}.ua-global>b{flex:1;background:#2e645e;color:white;font-size:12px;text-align:center;padding:12px 5px;border-radius:3px}.ua-local{border-left:2px solid #8dad9b;margin:15px 0 0 97px;padding-left:17px}.ua-local>div{display:flex;align-items:center;gap:12px;margin:8px 0}.ua-local b{padding:7px 12px;background:#fff;border:1px solid #bcd1c3;border-radius:3px;font-size:11px}.ua-local>span{font-size:10px;color:#60746a}.research-deck .ua-takeaway{font-size:14px;line-height:1.7;margin:19px 0 0}.ua-evidence{display:grid;grid-template-columns:1fr 1.18fr;gap:22px}.ua-panel{padding:20px;background:#f4f7f2;border-top:3px solid #2e645e}.research-deck .ua-panel h5,.research-deck .ua-adoptions h5{font-size:18px;font-weight:600;line-height:1.4;margin:10px 0 6px}.research-deck .ua-panel>p{font-size:10px;color:#607469;margin:0 0 15px;line-height:1.6}.ua-bar-key{display:flex;gap:14px;font-size:9px;margin-bottom:10px}.ua-bar-key>*:before{content:'';display:inline-block;width:9px;height:9px;background:#c5d4c9;margin-right:5px}.ua-bar-key b:before{background:#2e645e}.ua-bars>strong{display:block;font-size:11px;margin:13px 0 7px;font-weight:500}.ua-bars>div{height:21px;margin:4px 0}.ua-bars span,.ua-bars b{display:block;box-sizing:border-box;text-align:right;padding:3px 8px;font-size:10px;height:21px;border-radius:2px;background:#c5d4c9;color:#263e33}.ua-bars b{background:#2e645e;color:#fff;font-weight:500}.ua-metrics{width:100%;border-collapse:collapse;font-size:11px;text-align:right}.ua-metrics th,.ua-metrics td{padding:11px 3px;border-bottom:1px solid #d8e2d8;white-space:nowrap}.ua-metrics th:first-child{text-align:left;font-weight:500}.ua-metrics thead{font-size:10px;color:#5d7467}.ua-reductions{display:flex;gap:30px;margin-top:15px;color:#2e645e}.ua-reductions>b{font-size:28px;line-height:1.2}.ua-reductions span{display:block;font-size:9px;font-weight:500;margin-top:5px;color:#5d7467}.ua-influence{display:grid;grid-template-columns:.9fr 1.5fr;gap:26px;align-items:center}.ua-origin{padding:25px 23px;background:#2e645e;color:white;border-radius:5px}.ua-origin small{color:#c3dace}.ua-origin>strong{display:block;font-size:23px;line-height:1.4;margin:17px 0}.ua-origin>span{font-size:12px;line-height:1.7;color:#d8e7de}.ua-adoptions{display:grid;gap:15px;border-left:2px solid #a8c2b2;padding-left:24px}.ua-adoptions>div{position:relative}.ua-adoptions>div:before{content:'';position:absolute;left:-26px;top:3px;width:6px;height:6px;border-radius:50%;background:#2e645e}.research-deck .ua-adoptions p{font-size:12px;line-height:1.7;margin:5px 0 7px}.ua-adoptions a{font-size:10px;text-decoration:underline;text-underline-offset:3px}
@media(max-width:760px){.ua-taskmap,.ua-evidence,.ua-influence{grid-template-columns:1fr;gap:19px}.ua-bottom{flex-wrap:wrap;gap:20px}.research-deck .ua-bottom p{max-width:none;width:100%;margin:0;font-size:13px}.ua-line-label{flex-wrap:wrap;gap:6px}.ua-tokenrow{gap:2px}.ua-tokenrow span{font-size:8px}.ua-hierarchy{padding:14px 10px}.ua-global{gap:4px;flex-wrap:wrap}.ua-global small{width:100%;margin-bottom:5px}.ua-global small br{display:none}.ua-global>b{font-size:10px}.ua-local{margin-left:0;padding-left:10px}.ua-local>div{gap:8px}.ua-local b{padding:7px 8px}.ua-panel{padding:17px}.ua-origin>strong{font-size:21px}.ua-shared{padding:17px}.ua-sequence{flex-wrap:wrap}.ua-metrics{font-size:10px}}
/* Documented connections across four downstream audio systems. */
.ua-lineage-root{display:flex;align-items:center;justify-content:space-between;gap:20px;background:#2e645e;color:#fff;padding:15px 19px;border-radius:4px;margin-bottom:15px}.ua-lineage-root strong{font-size:15px}.ua-lineage-root span{font-size:11px;color:#d8e7de}.ua-influence-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 22px}.ua-influence-grid>div{padding:15px 18px;background:#f1f5f0;border-left:2px solid #aac4b5}.ua-influence-grid small{font-size:9px;letter-spacing:.8px;color:#52766b;font-weight:700}.research-deck .ua-influence-grid h5{font-size:18px;line-height:1.4;margin:7px 0;font-weight:600}.research-deck .ua-influence-grid p{font-size:12px;line-height:1.65;margin:0 0 8px}.ua-influence-grid a{font-size:10px;text-decoration:underline;text-underline-offset:3px}
@media(max-width:760px){.ua-lineage-root{align-items:flex-start;flex-direction:column;gap:8px}.ua-lineage-root span{line-height:1.6}.ua-influence-grid{grid-template-columns:1fr;gap:12px}}