:root{color-scheme:light;--bg:#ffffff;--surface:#f2f6ff;--text:#1f2d49;--muted:#53617a;--line:#d9e2f2;--blue:#3154c7;--teal:#08725f;--violet:#7448b1;--blue-soft:#eaf0ff;--teal-soft:#e4f5ec;--violet-soft:#f0e9fb;--reading-width:920px;font-family:Inter,"Segoe UI",Arial,sans-serif;font-synthesis:none}
*{box-sizing:border-box}
html{scroll-padding-top:92px;scroll-behavior:smooth}
body{margin:0;background-color:var(--bg);background-image:radial-gradient(ellipse at 15% 0%,#e4ebff 0%,transparent 58%),radial-gradient(ellipse at 85% 0%,#dcf5ed 0%,transparent 55%);background-size:100% 740px;background-repeat:no-repeat;color:var(--text);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
button,a{-webkit-tap-highlight-color:transparent}
button:focus-visible,a:focus-visible,video:focus-visible,pre:focus-visible,.gallery-grid:focus-visible{outline:3px solid var(--teal);outline-offset:5px}
button[hidden],[hidden]{display:none!important}
img,video{display:block;max-width:100%;height:auto}
figure,p,h1,h2,h3{margin:0}
.shell{width:min(1200px,calc(100% - 64px));margin-inline:auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;top:8px;left:12px;z-index:20;background:var(--teal);color:var(--bg);padding:10px 16px;transform:translateY(-160%)}
.skip-link:focus{transform:none}
.site-header{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:1px solid var(--line)}
.site-header::after{content:"";position:absolute;right:0;bottom:-1px;left:0;height:2px;background:linear-gradient(90deg,#4166d5 0%,#9273d4 48%,#30b398 100%);pointer-events:none}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:66px}
.brand{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-size:16px;font-weight:720;letter-spacing:-.03em;white-space:nowrap}
.brand-mark{width:28px;height:28px;flex:none}
nav{display:flex;gap:27px;align-items:center;font-size:13px;color:var(--muted)}
nav a:hover{color:var(--blue)}
.hero{text-align:center;padding-top:72px;padding-bottom:76px}
h1{font-size:clamp(44px,5.4vw,76px);font-weight:760;letter-spacing:-.055em;line-height:1.08;color:var(--blue)}
#hero-title{display:flex;align-items:center;justify-content:center;gap:.24em}
#hero-title span{white-space:nowrap}
.title-world{color:var(--teal)}
.hero-mark{width:1.08em;height:1.08em;flex:none}
.paper-title{font-size:clamp(21px,2.35vw,31px);line-height:1.38;letter-spacing:-.025em;margin:20px 0 31px}
.authors{display:flex;justify-content:center;flex-wrap:wrap;gap:10px 25px;max-width:1120px;margin:0 auto;font-size:19px}
.authors>span{white-space:nowrap}
sup{font-size:.64em;vertical-align:super;line-height:0;margin-left:3px;color:var(--blue)}
.affiliations{display:flex;justify-content:center;flex-wrap:wrap;gap:4px 22px;margin:21px auto 0;max-width:980px;color:var(--muted);font-size:15px;line-height:1.9}
.affiliations>span{display:inline-block}
.affiliations sup{margin:0 5px 0 0}
.primary-affiliation{flex-basis:100%}
.author-notes{display:flex;justify-content:center;flex-wrap:wrap;gap:8px 26px;margin-top:12px;font-size:13px;color:var(--muted)}
.author-notes sup{margin-right:5px}
.hero-actions{display:flex;justify-content:center;margin-top:28px}
.paper-button{display:inline-flex;gap:9px;align-items:center;justify-content:center;padding:11px 25px;border-radius:30px;background:var(--blue);color:#fff;font-size:15px;font-weight:650;border:1px solid var(--blue);box-shadow:0 7px 22px rgb(49 84 199 / 19%)}
.paper-button:hover{background:#2849b8;border-color:#2849b8}
.paper-button svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linejoin:round;stroke-linecap:round}
.section{padding-top:76px;padding-bottom:80px}
#teaser{padding-top:0}
.section-divided{border-top:1px solid var(--line)}
#task{background-color:#f4f7ff;background-image:linear-gradient(145deg,#eef3ff 0%,#f8fbff 60%,#edf8f3 100%)}
#task h2{color:var(--blue)}
#method h2{color:var(--violet)}
.section-heading{text-align:center;max-width:var(--reading-width);margin:0 auto 34px}
h2{font-size:clamp(29px,3vw,40px);line-height:1.2;letter-spacing:-.035em;font-weight:700}
.section-heading p{margin-top:15px;color:var(--muted);font-size:18px;line-height:1.6}
.section-heading .thesis{font-size:20px;color:#334960}
.thesis strong{color:var(--teal);font-weight:600;background:linear-gradient(transparent 64%,#d5f1e4 64%)}
.paper-figure{width:100%;max-width:var(--reading-width);margin-inline:auto}
.method-figure{width:75%;max-width:calc(var(--reading-width) * .75)}
.paper-figure img{width:100%;background:white;border-radius:8px}
figcaption{padding:15px 6px 0;text-align:center;color:var(--muted);font-size:14px;line-height:1.5}
.demo-figure{width:100%;max-width:var(--reading-width);margin:40px auto 0}
.demo-figure video{width:100%;aspect-ratio:240/143;background:#edf2f8;border:1px solid var(--line);border-radius:8px;object-fit:contain}
.demo-figure figcaption span{color:var(--text);font-weight:650;margin-right:9px}
.abstract{max-width:var(--reading-width);margin:42px auto 0;color:var(--muted);font-size:16px;line-height:1.8}
.abstract h3{color:var(--text);font-size:22px;letter-spacing:-.02em;margin-bottom:15px}
.abstract p+p{margin-top:15px}
.method-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));max-width:var(--reading-width);gap:30px;margin:30px auto 0;font-size:16px;color:var(--muted)}
.method-summary p{padding:18px;border-radius:12px;background:var(--blue-soft);border-top:3px solid #7393ed}
.method-summary p:nth-child(2){background:var(--teal-soft);border-top-color:#53b79b}
.method-summary p:nth-child(3){background:var(--violet-soft);border-top-color:#a386d2}
.method-summary strong{display:block;margin-bottom:5px;font-weight:650}
.reuse-text{color:var(--blue)}
.reconstruction-text{color:var(--teal)}
.recovery-text{color:var(--violet)}
#gallery{background-color:#eff8f6;background-image:linear-gradient(135deg,#edf9f3 0%,#f0f5ff 55%,#f3effc 100%)}
#gallery h2{color:var(--teal)}
.gallery-toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:0 0 28px}
.gallery-filters{display:flex;flex-wrap:wrap;gap:8px}
.gallery-filters button,.motion-toggle,.copy-button{border:1px solid var(--line);border-radius:8px;padding:9px 16px;background:var(--bg);color:var(--muted);font-size:14px;font-weight:550;min-height:44px}
.gallery-filters button span{margin-left:6px;font-size:12px}
.gallery-filters button[aria-pressed="true"]{background:var(--blue);border-color:var(--blue);color:#fff}
.gallery-filters button:hover,.motion-toggle:hover,.copy-button:hover{border-color:#7794bb}
.motion-toggle{white-space:nowrap}
.gallery-carousel{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;gap:16px;align-items:center}
.gallery-grid{--cards-per-view:3;display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 40px)/3);gap:20px;min-width:0;overflow-x:auto;overflow-y:hidden;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;scrollbar-width:none;padding:4px 0 12px;border-radius:10px}
.gallery-grid::-webkit-scrollbar{display:none}
.gallery-arrow{display:grid;place-items:center;width:44px;height:44px;padding:0;border:1px solid #cbd8ef;border-radius:50%;background:#fff;color:var(--blue);box-shadow:0 4px 14px rgb(49 84 199 / 9%);transition:background-color .18s,border-color .18s,box-shadow .18s}
.gallery-arrow svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.gallery-arrow:not(:disabled):hover{background:var(--blue-soft);border-color:var(--blue);box-shadow:0 5px 18px rgb(49 84 199 / 14%)}
.gallery-arrow:disabled{color:#a1acc0;background:#f5f7fb;border-color:#dde4ef;box-shadow:none;cursor:default}
.gallery-position{text-align:center;margin-top:16px;color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums}
.case-card{min-width:0;background:var(--bg);border:1px solid #d6e0fa;border-radius:9px;overflow:hidden;box-shadow:0 5px 20px rgb(49 84 199 / 6%);scroll-snap-align:start;scroll-snap-stop:always}
.case-card[data-track="reconstruction"]{border-color:#cce6db;box-shadow:0 5px 20px rgb(8 114 95 / 5%)}
.case-video{aspect-ratio:16/9;overflow:hidden;background:#edf2f8}
.case-video video{width:100%;height:100%;object-fit:cover;object-position:center}
.case-video video:fullscreen{object-fit:contain;background:#000}
.case-description{padding:19px 21px 22px}
.case-meta{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:9px;font-size:12px;color:var(--muted)}
.case-track{font-weight:650;color:var(--blue);background:var(--blue-soft);padding:4px 8px;border-radius:999px;line-height:1.25}
.case-card[data-track="reconstruction"] .case-track{color:var(--teal);background:var(--teal-soft)}
.case-description h3{font-size:16px;font-weight:550;line-height:1.5;letter-spacing:-.015em}
.case-controls{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.case-controls button{min-height:44px;min-width:76px;padding:6px 13px;border:1px solid var(--line);border-radius:7px;background:transparent;color:var(--muted);font-size:12px;line-height:1.4}
.case-controls .case-play{background:var(--blue-soft);border-color:#d4def9;color:var(--blue)}
.case-card[data-track="reconstruction"] .case-play{background:var(--teal-soft);border-color:#cee8dc;color:var(--teal)}
.case-controls button:hover{border-color:var(--blue);color:var(--text)}
.video-status{color:var(--muted);font-size:12px}
.video-status a{text-decoration:underline}
.citation-shell{max-width:1020px}
.citation-heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:25px}
.citation-heading h2{font-size:32px}
.citation-section{padding-bottom:95px;background-color:#faf8ff;background-image:linear-gradient(180deg,#ffffff 0%,#f4effc 100%)}
.citation-heading h2{color:var(--violet)}
.copy-button{background:var(--violet-soft);border-color:#ded1f0;color:var(--violet)}
pre{margin:0;padding:28px 30px;background:#f5f2fc;border:1px solid #e1d9ef;border-radius:9px;overflow:auto;white-space:pre-wrap;overflow-wrap:anywhere;color:#39476a;font-size:14px;line-height:1.8;tab-size:2}
code{font-family:"Cascadia Code",Consolas,monospace}
@media(min-width:561px) and (max-width:1000px){.gallery-grid{--cards-per-view:2;grid-auto-columns:calc((100% - 20px)/2)}}
@media(min-width:1500px){.shell{width:min(1320px,calc(100% - 96px))}}
@media(max-width:800px){.shell{width:calc(100% - 40px)}.header-inner{min-height:60px;gap:15px}.brand{font-size:14px}nav{gap:16px;font-size:12px}.hero{padding-top:52px;padding-bottom:56px}.authors{font-size:17px;gap:9px 20px}.affiliations{font-size:14px}.section{padding-top:56px;padding-bottom:60px}.section-heading p{font-size:16px}.method-summary{gap:20px;font-size:14px}.gallery-toolbar{align-items:flex-start;gap:12px}.gallery-filters button,.motion-toggle{padding:8px 11px;font-size:12px}.case-description{padding:14px 16px 18px}.case-description h3{font-size:16px}.case-meta{font-size:11px}.desktop-break{display:none}}
@media(max-width:560px){html{scroll-padding-top:106px}.shell{width:calc(100% - 32px)}.header-inner{justify-content:center;flex-wrap:wrap;gap:1px;padding:9px 0 10px}.brand{flex-basis:100%;text-align:center;font-size:14px}nav{gap:18px;font-size:11px}.hero{padding-top:38px;padding-bottom:50px}.paper-title{margin-top:17px;margin-bottom:25px;font-size:21px}.authors{font-size:16px;gap:9px 18px}.affiliations{font-size:13px;gap:3px 15px;line-height:1.7;margin-top:20px}.author-notes{font-size:12px;gap:14px;margin-top:14px}.hero-actions{margin-top:23px}.section-heading{margin-bottom:23px}.section-heading .thesis{font-size:17px}.section{padding-top:45px;padding-bottom:48px}figcaption{font-size:12px;padding-top:12px}.demo-figure{margin-top:30px}.abstract{font-size:15px;line-height:1.8;margin-top:30px}.method-summary{grid-template-columns:1fr;gap:15px;margin-top:25px;font-size:15px}.method-summary strong{display:inline}.gallery-carousel{gap:8px}.gallery-grid{--cards-per-view:1;grid-auto-columns:100%;gap:16px}.gallery-toolbar{flex-wrap:wrap;align-items:center;gap:13px}.gallery-filters{gap:6px}.gallery-filters button{padding-inline:11px}.motion-toggle{min-height:36px;padding:5px 10px}.case-description h3{font-size:17px}.citation-heading h2{font-size:28px}pre{padding:20px 17px;font-size:12px;line-height:1.9}.citation-section{padding-bottom:58px}}
@media(max-width:560px){#hero-title{font-size:clamp(26px,10.6vw,44px)}.brand-mark{width:24px;height:24px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}