/* Responsive editorial polish; interactive viewers require an intentional touch entry. */
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html{scroll-padding-top:90px}body{line-height:1.75}button,a,input{ -webkit-tap-highlight-color:transparent }
button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid #a5a1ed;outline-offset:4px}
.header{background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:blur(16px)}
.hero{background:radial-gradient(ellipse at 75% 45%,#e8e5ff80,transparent 65%)}
.hero-portrait img{border:5px solid var(--surface);box-shadow:0 22px 60px -30px #36305480}
.hero-lead{font-size:16px;line-height:1.95}.hero-meta,.hero-email{font-size:12px}.hero-actions .button{font-size:13px;padding:14px 23px}
.section-heading p,.lab-top p{font-size:13px;line-height:1.85}.tiny-label{letter-spacing:1.8px}
.project-card,.media-card{border-radius:19px;box-shadow:0 10px 35px -27px #38436350}
.project-body{padding:27px}.project-body p{font-size:14px;line-height:1.85}.project-body h3{line-height:1.5}.project-meta{font-size:10px}.tags{gap:7px}.tags span{font-size:10px}
.media-description{padding:23px}.media-description h3{font-size:17px;line-height:1.6}.media-description p{font-size:13px}.media-description .text-link{font-size:12px}.media-preview{aspect-ratio:16/10}.media-play{width:54px;height:54px}
.about-intro p,.career p,.method p{font-size:14px;line-height:1.9}.career h3{font-size:18px}.education{border-radius:14px}.timeline{padding-top:8px}
.lab-shell{border-radius:22px;box-shadow:0 22px 60px -35px #40456855}.lab-toolbar{min-height:64px}.lab-tabs button{min-height:40px;font-size:12px;padding:8px 16px}.lab-scene.real-scene{align-items:stretch}
.real-display{padding:22px;background:var(--panel)}.real-scene .scene-copy{padding:32px 28px}.real-scene .scene-copy h3{font-size:27px;line-height:1.55;letter-spacing:-.6px}.real-scene .scene-copy>p{font-size:14px;line-height:1.85}.real-scene .demo-note{font-size:12px!important;color:var(--soft)}
.model-stage{border-radius:15px}.model-toolbar{gap:12px;margin-top:14px}.model-toolbar button,.render-modes button{min-height:40px;min-width:40px;font-size:12px;padding:8px 12px;border-radius:9px}.model-toolbar>div{gap:7px}.model-hint,.render-modes label{font-size:12px}
.model-layers{font-size:12px;gap:10px 16px}.model-layers label{min-height:34px}.model-layers input[type=checkbox]{width:17px;height:17px}.model-layers input[type=range]{min-height:30px}.feed-controls{padding-top:8px;gap:17px}.feed-controls label{font-size:13px}.feed-controls input{min-height:28px}.capture-details summary{font-size:13px;min-height:36px}
.heartbeat-panel video{border:1px solid var(--line);border-radius:13px}.heartbeat-panel p{font-size:12px!important}.heartbeat-panel .small-button{min-height:42px}
.research-row h3{line-height:1.65}.research-row a,.research-row p{overflow-wrap:anywhere}.contact-panel{border-radius:22px}.contact-panel p{font-size:14px}
.model-gate,.exit-model{display:none}
.model-viewer[data-gated=true][data-interacting=false] .model-gate{display:block;position:absolute;inset:0;z-index:3;background:var(--panel)}
.model-gate>img{display:block;width:100%;height:100%;object-fit:contain}.model-gate>div{position:absolute;inset:auto 0 0;padding:24px 10px 15px;background:linear-gradient(transparent,#f3f4f8f5 45%);display:flex;align-items:center;flex-direction:column;gap:7px}
.enter-model{min-height:46px;padding:11px 22px;border-radius:11px;background:#5355b7;color:#fff;font-size:14px;box-shadow:0 6px 20px #353e7730}.model-gate-note{font-size:11px;color:#596078}
.model-viewer[data-gated=true][data-interacting=false] .model-stage{cursor:auto;touch-action:pan-y}
.model-viewer[data-gated=true][data-interacting=false] canvas{pointer-events:none;touch-action:pan-y!important}
.model-viewer[data-gated=true][data-interacting=false] .render-modes,.model-viewer[data-gated=true][data-interacting=false] .model-toolbar,.model-viewer[data-gated=true][data-interacting=false] .model-layers,.model-viewer[data-gated=true][data-interacting=false] .feed-controls{display:none}
.model-viewer[data-gated=true][data-interacting=true] .exit-model{display:block;position:absolute;z-index:4;top:10px;right:10px;min-height:44px;padding:8px 14px;background:#222b40e8;color:white;border:1px solid #ffffff60;border-radius:9px;font-size:12px}
.model-viewer[data-gated=true][data-interacting=true] .model-hint{font-size:0}.model-viewer[data-gated=true][data-interacting=true] .model-hint:after{content:'单指旋转 · 双指缩放';font-size:12px}html[lang=en] .model-viewer[data-gated=true][data-interacting=true] .model-hint:after{content:'Drag to orbit · Pinch to zoom'}
.dark .model-gate>div{background:linear-gradient(transparent,#202538f5 45%)}.dark .model-gate-note{color:#bfc7db}.dark{--muted:#b0b8cd;--soft:#98a4bd}
@media(max-width:1100px){.real-scene{grid-template-columns:1fr}.real-scene .scene-copy{padding:28px}.heartbeat-panel{max-width:540px}.heartbeat-panel video{max-height:370px}.project-body{padding:23px}}
@media(max-width:900px){.desktop-nav,.nav-contact{display:none}.menu-button{display:grid}.nav-tools{margin-left:auto;gap:8px}.icon-button,.text-button,.menu-button{min-width:44px;min-height:44px}.mobile-nav a{display:block;min-height:48px;padding:11px 24px;font-size:14px}.hero-content{gap:28px;grid-template-columns:minmax(0,1fr) 240px}.hero h1{font-size:48px}.hero-lead{font-size:15px}.hero-meta{gap:9px}.model-stage{height:380px}.lab-tabs button{min-height:44px}.small-button,.text-link{min-height:44px;display:inline-flex;align-items:center}.model-toolbar button,.render-modes button{min-height:44px;min-width:44px}.filter-bar button{min-height:44px;font-size:12px}.project-media-links button{font-size:12px}.research-row h3{font-size:15px}}
@media(max-width:740px){
 html{scroll-padding-top:78px}.container{width:calc(100% - 36px)}.nav{height:70px}.brand{font-size:13px}.brand-sub{font-size:7px}.monogram{flex-shrink:0}.nav-tools{gap:2px}
 .hero{padding:30px 0 38px}.hero-content{grid-template-columns:1fr;gap:23px}.hero-portrait{width:154px}.hero-portrait img{border-radius:20px}.hero h1{font-size:42px}.hero-english-name{font-size:21px;letter-spacing:1.5px}.hero .intro-name{display:none}.hero .eyebrow-pill{margin-bottom:20px;font-size:11px}.hero-role{font-size:22px;margin-top:20px}.hero-role span{font-size:11px}.hero-lead{font-size:15px;line-height:1.9;margin-top:22px}.hero-meta{font-size:11px;gap:8px}.hero-email{font-size:13px}.hero-actions{gap:10px}.hero-actions .button{font-size:13px;padding:13px 19px}.hero-meta i{display:none}
 .section{padding:55px 0}.section-heading h2,.lab-top h2{font-size:27px;line-height:1.45;letter-spacing:-.5px}.section-heading p,.lab-top p{font-size:14px;line-height:1.85}.tiny-label{font-size:9px}.project-body p,.career p,.about-intro p,.method p{font-size:14px}.project-body h3,.featured .project-body h3{font-size:22px}.tags span{font-size:11px}.feature-notes{font-size:12px}.project-grid{gap:24px}
 .media-section{padding-top:0}.media-grid{gap:24px}.media-preview{aspect-ratio:16/10}.media-description h3{font-size:17px}.media-description p{font-size:13px}.media-number{font-size:9px}.media-play{width:56px;height:56px}
 .lab-shell{border-radius:17px}.lab-toolbar{padding:10px;min-height:64px}.window-dots{display:none}.lab-tabs{width:100%;display:grid;grid-template-columns:repeat(3,1fr);margin:0;gap:3px}.lab-tabs button{padding:8px 3px;font-size:12px;white-space:nowrap}.real-display{padding:12px}.model-stage{height:310px}.real-scene .scene-copy{padding:23px}.real-scene .scene-copy h3{font-size:24px}.real-scene .scene-copy>p{font-size:14px}.lab-bottom{font-size:7px;gap:12px}.lab-bottom span:last-child{display:none}.model-toolbar{align-items:flex-start}.model-toolbar>div{flex-wrap:wrap;gap:6px}.model-toolbar .model-hint{width:100%}.model-toolbar button{padding:8px 11px}.render-modes label{width:100%;justify-content:space-between;margin-top:6px}.render-modes input{width:130px;min-height:32px}.model-layers label{min-height:40px}.feed-controls input{min-height:40px}.heartbeat-panel video{max-height:320px}.heartbeat-panel .tiny-label{font-size:10px}
 .method-grid{gap:27px 20px}.method h3{font-size:16px}.stack-line{font-size:11px;gap:13px}.education{padding:17px}.timeline{margin-top:30px}.career h3{font-size:17px}.research-row h3{font-size:15px}.contact-panel{padding:29px 22px}.contact-panel h2{font-size:28px}.contact-panel p{font-size:14px}.contact-actions{flex-wrap:wrap;gap:10px}.email-address{font-size:15px}.footer{font-size:10px;line-height:1.8}.dialog-top{position:sticky;top:0;z-index:5;background:var(--surface)}.dialog-top .icon-button{min-width:44px;min-height:44px}.case-tabs{overflow-x:auto;flex-wrap:nowrap}.case-tabs button{flex-shrink:0;min-height:44px;font-size:12px}.case-panel{font-size:14px}#video-title{font-size:14px}
}
@media(max-width:360px){.container{width:calc(100% - 24px)}.brand-sub{display:none}.nav-tools .icon-button,.nav-tools .text-button{min-width:40px}.hero h1{font-size:38px}.hero-actions .button{padding:12px 14px}.model-stage{height:280px}.model-toolbar button{padding:8px 9px}.lab-tabs button{font-size:11px}}
@media(max-height:500px) and (orientation:landscape){.model-stage{height:260px}.hero{padding-top:24px}.hero-portrait{width:130px}.header{position:relative}.dialog-top{position:sticky}}
[data-gated="true"][data-interacting="false"] .model-status{display:none}

.extra-controls{padding:14px;border-top:1px solid var(--line,#ddd);display:grid;gap:10px}.parameter-row{display:grid;grid-template-columns:minmax(100px,1fr) minmax(90px,1.4fr) 66px;gap:8px;align-items:center;font-size:12px}.parameter-row input{width:100%;accent-color:#7266ed}.parameter-row output{text-align:right;font-variant-numeric:tabular-nums}.biplane-projections{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:12px}.biplane-projections figure{margin:0;min-width:0}.biplane-projections canvas{width:100%;height:auto;border-radius:10px}.biplane-projections figcaption{font-size:12px;text-align:center;padding:6px}.biplane-projections .demo-note{grid-column:1/-1}.extra-controls>label:not(.parameter-row){font-size:12px}.real-scene{align-items:start}

.model-viewer[data-model=dsa] .extra-controls{grid-template-columns:1fr 1fr;gap:12px 22px}.model-viewer[data-model=dsa] .parameter-row{grid-template-columns:90px minmax(50px,1fr) 62px}.extra-controls input[type=range]{min-height:32px}.model-viewer[data-model=dsa] .extra-controls>.small-button{grid-column:1/-1}.biplane-projections{padding:15px 0}.model-viewer[data-gated=true][data-interacting=false] .extra-controls,.model-viewer[data-gated=true][data-interacting=false] .biplane-projections{display:none}@media(max-width:740px){.model-viewer[data-model=dsa] .extra-controls{grid-template-columns:1fr;padding:12px 0}.parameter-row{grid-template-columns:90px minmax(50px,1fr) 64px}.extra-controls input[type=range]{min-height:40px}.biplane-projections{gap:8px}.biplane-projections figcaption{font-size:11px}}

.biplane-projections canvas{display:block;width:100%!important;max-width:100%;height:auto!important;aspect-ratio:1}

.model-viewer[data-model=wire] .model-stage{height:auto;aspect-ratio:1;min-height:0}.deepdrr-angle{grid-column:1/-1;padding-bottom:12px}.deepdrr-angle label{display:grid;grid-template-columns:1fr 1.4fr 45px;gap:10px;align-items:center;font-size:12px}.deepdrr-angle p{font-size:11px;line-height:1.7;color:var(--muted)}.deepdrr-angle[hidden]{display:none}

.deepdrr-projection{position:relative}.deepdrr-projection img{display:block;width:100%;height:auto;border-radius:10px}.projection-unavailable{display:none}.deepdrr-projection.unavailable img{visibility:hidden}.deepdrr-projection.unavailable{background:var(--panel);border-radius:10px}.deepdrr-projection.unavailable .projection-unavailable{display:block;position:absolute;top:35%;left:5%;width:90%;white-space:pre-line;text-align:center;font-size:12px;line-height:1.8;color:var(--muted)}

.model-viewer[data-model=wire][data-deepdrr=true][data-gated=true][data-interacting=true] .model-hint:after{content:'单指切换投影 · 双指放大'}html[lang=en] .model-viewer[data-model=wire][data-deepdrr=true][data-gated=true][data-interacting=true] .model-hint:after{content:'Drag for projection · Pinch to magnify'}

.live-projection-status{display:block;min-height:2.5em;font-size:11px;padding:8px;color:#626583}.deepdrr-projection.computing img{opacity:.55}.deepdrr-projection.projection-error .live-projection-status{color:#a44141}
/* Compact interaction controls: keep the image as the focal point. */
.model-viewer .extra-controls{padding:8px 0;gap:3px 14px}
.model-viewer .parameter-row{grid-template-columns:88px minmax(60px,1fr) 54px;gap:6px;font-size:11px;min-height:28px}
.model-viewer .extra-controls input[type=range]{min-height:24px;height:24px;margin:0;cursor:pointer}
.model-viewer[data-model=dsa] .extra-controls{gap:2px 16px;padding:8px 0;grid-template-columns:1fr 1fr}
.model-viewer[data-model=dsa] .parameter-row{grid-template-columns:84px minmax(45px,1fr) 52px}
.model-viewer .extra-controls>.small-button,.model-viewer .deepdrr-angle>.small-button{justify-self:start;min-height:28px;padding:4px 10px;font-size:11px;margin:3px 0}
.model-viewer .model-toolbar{gap:6px;margin-top:6px}
.model-viewer .model-toolbar>div{gap:4px}
.model-viewer .model-toolbar button,.model-viewer .render-modes button{min-height:30px;min-width:30px;padding:4px 8px;font-size:11px;border-radius:7px}
.model-viewer .model-hint,.model-viewer .render-modes label{font-size:10px}
.model-viewer .render-modes{margin:7px 0 3px;gap:4px}
.model-viewer .deepdrr-angle{padding-bottom:3px}
.model-viewer .deepdrr-angle label{grid-template-columns:140px minmax(65px,1fr) 40px;font-size:11px;gap:6px}
.model-viewer .deepdrr-angle p{margin:3px 0;line-height:1.5;font-size:10px}
.model-viewer .biplane-projections{padding:8px 0;gap:6px}
.model-viewer .biplane-projections figcaption{font-size:10px;padding:3px}
.model-viewer .live-projection-status{min-height:0;padding:3px;font-size:10px}
.model-viewer .biplane-projections .demo-note{margin:4px 0;font-size:10px;line-height:1.5}
@media(max-width:740px){
 .model-viewer[data-model=dsa] .extra-controls{grid-template-columns:1fr;gap:0;padding:5px 0}
 .model-viewer .parameter-row,.model-viewer[data-model=dsa] .parameter-row{grid-template-columns:110px minmax(65px,1fr) 58px;min-height:34px;font-size:11px}
 .model-viewer .extra-controls input[type=range]{height:34px;min-height:34px}
 .model-viewer .model-toolbar button,.model-viewer .render-modes button{min-height:36px;min-width:36px}
 .model-viewer .extra-controls>.small-button,.model-viewer .deepdrr-angle>.small-button{min-height:36px}
 .model-viewer .render-modes label{width:auto;flex:1;justify-content:flex-end;margin:0;gap:5px}
 .model-viewer .render-modes input{width:66px;min-height:34px}
 .model-viewer .deepdrr-angle label{grid-template-columns:125px minmax(55px,1fr) 32px}
}
@media(min-width:521px) and (max-width:740px){
 .model-viewer[data-model=dsa] .extra-controls{grid-template-columns:1fr 1fr;gap:2px 12px}
 .model-viewer[data-model=dsa] .parameter-row{grid-template-columns:76px minmax(35px,1fr) 46px;font-size:10px;min-height:30px;gap:4px}
 .model-viewer[data-model=dsa] .extra-controls input[type=range]{height:30px;min-height:30px}
}
/* Two-column device controls, including narrow previews. */
.model-viewer[data-model=dsa] .extra-controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:3px 14px}
@media(max-width:520px){
 .model-viewer[data-model=dsa] .extra-controls{gap:4px 12px}
 .model-viewer[data-model=dsa] .parameter-row{grid-template-columns:minmax(0,1fr) 49px;gap:0 4px;min-height:48px;font-size:10px}
 .model-viewer[data-model=dsa] .parameter-row>span{grid-column:1;grid-row:1;line-height:1.3}
 .model-viewer[data-model=dsa] .parameter-row>output{grid-column:2;grid-row:1;font-size:10px;white-space:nowrap}
 .model-viewer[data-model=dsa] .parameter-row>input{grid-column:1/-1;grid-row:2;width:100%;min-height:30px;height:30px}
}
/* Consistent vector icons and contact card typography. */
.ui-icon{width:18px;height:18px;flex:0 0 18px;vertical-align:middle;pointer-events:none}
.button{min-height:44px;padding:11px 18px;gap:10px;font-size:13px;line-height:1.4;border-radius:10px;letter-spacing:0}
.icon-button,.model-toolbar button[data-zoom]{display:inline-flex;align-items:center;justify-content:center}
.button:hover{transform:translateY(-1px)}
.contact-panel{position:relative;overflow:hidden;padding:40px;border:1px solid var(--line);background:radial-gradient(ellipse at 100% 100%,#e7e1ff 0,transparent 62%),linear-gradient(120deg,#fafaff,#f3f2ff)}
.contact-panel h2{font-size:clamp(27px,3vw,38px);line-height:1.5;letter-spacing:0;font-weight:650;max-width:680px;text-wrap:balance}
.contact-panel .tiny-label{font-size:10px;letter-spacing:1.5px;margin-bottom:14px}
.contact-panel>p{max-width:560px;font-size:14px;line-height:1.9;margin:14px 0 22px;text-wrap:pretty}
.contact-actions{display:flex;gap:12px;align-items:center;margin:0;position:relative;z-index:1}
.contact-actions .secondary{color:var(--ink);background:var(--surface);box-shadow:0 2px 8px #30306006}
.contact-panel .email-address{display:inline-block;margin-top:20px;font-size:13px;line-height:1.6;letter-spacing:.2px;overflow-wrap:anywhere}
.contact-decor{position:absolute;right:34px;top:36px;opacity:.065;pointer-events:none;transform:rotate(-8deg)}
.contact-decor .ui-icon{width:150px;height:150px;stroke-width:1}
.dark .contact-panel{background:radial-gradient(ellipse at 100% 100%,#393154,transparent 65%),var(--surface)}
@media(max-width:600px){
 .contact-panel{padding:26px 22px;border-radius:20px}
 .contact-panel h2{font-size:26px;line-height:1.5;letter-spacing:0;max-width:100%;text-wrap:initial}
 .contact-panel>p{font-size:13px;line-height:1.9;margin:14px 0 20px;max-width:100%}
 .contact-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}
 .contact-actions .button{width:100%;min-height:44px;padding:10px 8px;font-size:12px;gap:8px}
 .contact-decor{right:12px;top:20px;opacity:.045}
 .contact-decor .ui-icon{width:100px;height:100px}
 .contact-panel .email-address{margin-top:18px;font-size:12px}
 html[lang=en] .contact-panel h2{font-size:27px;line-height:1.25}
 html[lang=en] .contact-panel h2 br{display:none}
}
@media(max-width:360px){.contact-panel{padding:24px 18px}.contact-panel h2{font-size:23px}}
/* Shared action language across navigation, cards, dialogs and media. */
button,a.button,.nav-contact{font-family:inherit;line-height:1.4}
.small-button,.filter-bar button,.case-tabs button,.lab-tabs button,.text-button{border-radius:8px;font-weight:500}
.small-button,.project-media-links button{padding:8px 12px;gap:7px;font-size:12px;line-height:1.5;white-space:normal}
.text-link,.project-link,.nav-contact{display:inline-flex;align-items:center;gap:8px}
.project-link i{display:inline-flex;font-style:normal}
button .ui-icon,a .ui-icon{display:inline-block;width:17px;height:17px;flex:0 0 17px}
.media-play .ui-icon{width:22px;height:22px}
button:focus-visible,a:focus-visible{outline:2px solid #8574ed;outline-offset:3px}
.project-media-links button{height:auto;min-height:40px;text-align:left}
.scene-copy,.project-body,.contact-panel,.research-row,.case-panel{min-width:0}
.scene-copy h3,.project-body h3,.case-hero h2,.research-row h3{overflow-wrap:break-word;word-break:normal}
@media(max-width:600px){
 .hero-actions{display:flex;flex-wrap:wrap;gap:8px}.hero-actions .button{flex:1 1 140px;gap:8px;font-size:12px;padding:10px 12px}
 .lab-tabs button{font-size:11px;white-space:normal;line-height:1.35;padding:7px 5px;min-width:0}
 .filter-bar{gap:5px}.filter-bar button{padding:7px 10px}
 .scene-copy .small-button,.scene-copy .text-link{margin:4px 4px 4px 0;max-width:100%;white-space:normal}
 .model-toolbar{align-items:center}.model-toolbar>div{max-width:100%}
 .case-tabs button{white-space:normal;min-width:100px;max-width:160px}
 .case-panel{overflow-wrap:break-word}.case-panel table{display:block;max-width:100%;overflow-x:auto}
 .tags{flex-wrap:wrap}.tags span{max-width:100%;overflow-wrap:anywhere}
 html[lang=en] .real-scene .scene-copy h3{font-size:25px;line-height:1.25;letter-spacing:-.3px}
 html[lang=en] .project-body h3{font-size:23px;line-height:1.3}
 html[lang=en] .parameter-row{font-size:10px}
 html[lang=en] .deepdrr-angle label{grid-template-columns:minmax(95px,1fr) minmax(50px,1fr) 30px}
 .model-layers .opacity-control{flex-wrap:wrap;gap:6px}
}
@media(max-width:900px){.nav-contact{display:none}}
@media(max-width:600px){html[lang=en] .contact-panel h2 br{display:initial}.contact-actions .button{white-space:nowrap;font-size:11px;gap:6px}}
@media(max-width:360px){.contact-actions .button{padding:9px 5px}.contact-actions .ui-icon{width:15px;height:15px;flex-basis:15px}}
.cover-pose img{width:100%;height:100%;object-fit:contain;background:#101116}
.pose-demos{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:24px}
.pose-demos figure{margin:0;min-width:0}.pose-demos video{width:100%;aspect-ratio:16/9;display:block;background:#101116;border-radius:10px}.pose-demos h3{font-size:16px;margin:14px 0 6px}.pose-demos p{font-size:13px;line-height:1.75;margin:0}
@media(max-width:740px){.pose-demos{grid-template-columns:1fr;padding:18px;gap:24px}}