:root{--ink:#111315;--muted:#656b70;--paper:#f5f6f3;--white:#fff;--line:#d9dcda;--signal:#ee4b35;--green:#1e7258;--yellow:#f3c64d;--max:1180px}
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.lab{position:relative;min-height:680px;display:grid;place-items:center;overflow:hidden;background:#0b0d0f;color:var(--white)}.lab:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 73% 47%,transparent 0 12%,rgba(11,13,15,.08) 35%,rgba(11,13,15,.88) 78%);pointer-events:none}.lab-canvas{position:absolute;inset:0;width:100%;height:100%}.lab-inner{position:relative;z-index:2;width:min(var(--max),calc(100% - 48px))}.section-label.light{color:#64e0b2}.lab-kicker{margin:0 0 12px;color:#9da4a2;font-size:15px}.lab h2{max-width:700px;margin:0;font-family:Georgia,"Times New Roman",serif;font-size:clamp(52px,7vw,96px);line-height:.98;font-weight:400}.lab-copy{max-width:520px;margin:28px 0 0;color:#bec5c2;font-size:18px}.lab-actions{display:flex;gap:24px;align-items:center;margin-top:32px}.button-light{color:var(--ink);background:#64e0b2}.text-link{font-weight:700;text-underline-offset:5px}.text-link.light{color:var(--white)}
.section-heading.compact{grid-template-columns:1.1fr .9fr}.beyond{padding-bottom:140px}.photo-grid{display:grid;grid-template-columns:1.25fr .75fr;grid-template-rows:300px 230px;gap:16px}.photo-grid figure{margin:0;overflow:hidden}.photo-grid img{height:100%;object-fit:cover}.photo-wide{grid-row:1/3}.contact-panel{display:flex;flex-direction:column;justify-content:flex-end;padding:28px;background:var(--signal);color:var(--white)}.contact-panel p{margin:0 0 auto;font-family:Georgia,"Times New Roman",serif;font-size:25px;line-height:1.2}.contact-panel a{font-weight:750}.contact-panel span{margin-top:4px;font-size:13px;opacity:.84}
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@media(max-width:820px){.site-header{min-height:64px;padding:0 20px}.menu-toggle{display:block;z-index:2}.site-nav{position:fixed;inset:0;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:20px;padding:80px 28px;color:var(--white);background:var(--ink);transform:translateX(100%);transition:transform .24s ease}.site-nav.is-open{transform:translateX(0)}.site-nav a{font-family:Georgia,"Times New Roman",serif;font-size:34px;font-weight:400}.site-nav .nav-contact{margin-top:16px;font-family:inherit;font-size:14px}.hero{min-height:820px}.hero-media{background-position:62% center}.hero-shade{background:linear-gradient(90deg,rgba(8,9,9,.86),rgba(8,9,9,.28)),linear-gradient(0deg,rgba(8,9,9,.72),transparent 58%)}.hero-content{width:calc(100% - 40px);padding-bottom:42px}.hero h1{font-size:clamp(64px,21vw,92px)}.hero-lede{max-width:94%;font-size:20px}.hero-facts{gap:20px;justify-content:space-between}.hero-facts div{min-width:0}.hero-facts dd{max-width:100px}.hero-next{display:none}.section{width:calc(100% - 40px);padding:86px 0}.intro-grid,.section-heading,.section-heading.compact,.recognition{grid-template-columns:1fr;gap:28px}.section-heading p{margin-top:4px}.content-block{grid-template-columns:1fr;gap:26px;padding:52px 0}.education-table{min-width:720px}.modern-table tbody th{width:44%}.paper{grid-template-columns:36px 1fr;gap:10px}.paper>a{grid-column:2}.timeline-grid{grid-template-columns:1fr;margin-top:80px}.timeline{padding:46px 32px}.recognition{padding-top:86px}.lab{min-height:720px}.lab:after{background:linear-gradient(90deg,rgba(11,13,15,.88),rgba(11,13,15,.24))}.lab h2{font-size:clamp(50px,15vw,72px)}.photo-grid{grid-template-columns:1fr;grid-template-rows:420px 260px 220px}.photo-wide{grid-row:auto}.site-footer{grid-template-columns:1fr}.footer-note{text-align:left}}
@media(max-width:520px){.hero-actions{flex-direction:column;align-items:stretch}.hero-facts{margin-top:36px}.hero-facts dt{font-size:9px}.hero-facts dd{font-size:12px}.intro-copy{font-size:16px}.paper h3{font-size:18px}.lab-actions{align-items:flex-start;flex-direction:column}}
.hero-media{background-image:url("../../images/p2.jpg");background-position:50% 60%}
.pku-photo-feature{--pku-shift:0px;position:relative;height:clamp(360px,42vw,520px);margin:-38px 0 84px 280px;overflow:hidden;background:#dfe3df}.pku-photo-feature img{position:absolute;inset:-60px 0 auto;width:100%;height:calc(100% + 120px);object-fit:cover;object-position:50% 55%;transform:translate3d(0,var(--pku-shift),0);will-change:transform}
.photo-grid{grid-template-columns:1fr 1fr .85fr;grid-template-rows:300px 284px}
.photo-tall,.photo-moon{grid-row:1/3;background:#0b0d0f}.photo-tall{grid-column:1}.photo-moon{grid-column:2}.photo-snow{grid-column:3;grid-row:1}.photo-grid .contact-panel{grid-column:3;grid-row:2}.photo-tall img,.photo-moon img{object-fit:contain}.photo-snow img{object-position:50% 56%}
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@media(max-width:820px){.hero-media{background-position:53% center}.pku-photo-feature{height:auto;aspect-ratio:3/2;margin:-18px 0 60px}.pku-photo-feature img{inset:0;height:100%;transform:none;will-change:auto}.publication-list{grid-auto-columns:88%}.publication-controls{margin-top:18px}.photo-grid{grid-template-columns:1fr;grid-template-rows:auto auto 300px 220px}.photo-tall,.photo-moon{aspect-ratio:2/3}.photo-tall,.photo-snow,.photo-moon,.photo-grid .contact-panel{grid-column:auto;grid-row:auto}}
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.contact-band{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;align-items:end;padding:70px max(24px,calc((100vw - var(--max))/2));color:var(--white);background:var(--ink)}.contact-band h2{margin:8px 0 0;font:400 clamp(38px,5vw,66px)/1 Georgia,"Times New Roman",serif}.contact-band>div>span:first-child,.contact-band p{margin:0;color:#939a97;font-size:10px;font-weight:800;text-transform:uppercase}.contact-band a,.contact-band>div>span:last-child{color:var(--white);font-size:15px;font-weight:700;text-decoration:none}
@media(min-width:821px){.beyond{display:grid;grid-template-columns:minmax(300px,.72fr) minmax(0,1.28fr);gap:72px;align-items:start;padding-top:140px}.beyond>.section-heading.compact{position:sticky;top:108px;display:block;margin:0}.beyond>.section-heading.compact .section-label{margin-bottom:28px}.beyond>.section-heading.compact h2{font-size:clamp(46px,4.2vw,64px)}.beyond>.section-heading.compact>div:last-child{margin-top:38px}.photo-grid{display:block;min-width:0;isolation:isolate}.photo-grid figure{position:sticky;top:96px;width:100%;height:calc(100vh - 140px);min-height:560px;max-height:760px;margin:0 0 24vh;overflow:hidden;background:#0b0d0f;box-shadow:0 28px 70px rgba(17,19,21,.16)}.photo-grid figure:last-child{margin-bottom:0}.photo-grid .photo-tall,.photo-grid .photo-moon,.photo-grid .photo-snow{grid-column:auto;grid-row:auto}.photo-grid .photo-tall{z-index:1}.photo-grid .photo-moon{z-index:2}.photo-grid .photo-snow{z-index:3}.photo-grid figure img{height:100%;object-fit:contain;object-position:center}.photo-grid .photo-snow img{object-fit:cover;object-position:52% center}}
@media(max-width:820px){.model-releases{margin-top:28px}.education-intro{margin:-6px 0 42px;font-size:17px}.chapter-heading{margin-top:72px;padding-top:78px}.recognition-heading~.content-block{padding:62px 0 72px}.recognition-heading~.content-block .content-heading:before{margin-bottom:14px}.recognition-heading~.content-block .content-heading h3{font-size:34px}.beyond{display:block}.beyond>.section-heading.compact{position:static}.photo-grid{display:grid;grid-template-columns:1fr;grid-template-rows:auto auto auto;gap:16px}.photo-grid figure{position:relative;top:auto;height:auto;min-height:0;max-height:none;margin:0;box-shadow:none}.photo-grid .photo-tall,.photo-grid .photo-moon{aspect-ratio:2/3}.photo-grid .photo-snow{aspect-ratio:3/2}.photo-grid figure img{height:100%;object-fit:contain}.photo-grid .photo-snow img{object-fit:cover;object-position:52% center}.contact-band{grid-template-columns:1fr;gap:30px;padding:58px 20px}.contact-band h2{font-size:44px}}
.site-header.is-scrolled.is-on-dark{color:var(--white);background:rgba(17,19,21,.94);box-shadow:0 1px 0 rgba(255,255,255,.1)}.hiking-story{--hiking-progress:0%;width:100%;max-width:none;min-height:330vh;margin:0;padding:0;color:var(--white);background:var(--ink)}.hiking-story .section-label{color:var(--yellow)}.hiking-story .section-heading p{color:#bdc3c0}.hiking-progress{position:relative;display:grid;grid-template-columns:repeat(3,1fr);margin-top:34px;border-top:1px solid #454a48}.hiking-progress:before{content:"";position:absolute;top:-1px;left:0;width:var(--hiking-progress);height:2px;background:var(--yellow);transition:width .18s linear}.hiking-progress span{padding-top:12px;color:#6f7673;font-size:10px;font-weight:850}.hiking-progress span.is-active{color:var(--white)}
.hiking-story{display:block}
@media(min-width:821px){.hiking-sticky{position:sticky;top:0;display:grid;width:min(var(--max),calc(100% - 48px));height:100vh;min-height:680px;grid-template-columns:minmax(300px,.72fr) minmax(0,1.28fr);gap:72px;align-items:center;margin:0 auto;padding:94px 0 38px}.hiking-story .section-heading.compact{position:relative;top:auto;display:block;margin:0}.hiking-story .section-heading.compact .section-label{margin-bottom:26px}.hiking-story .section-heading.compact h2{font-size:clamp(48px,4.6vw,68px)}.hiking-story .section-heading.compact>div:nth-child(3){margin-top:34px}.hiking-stage{position:relative;display:block;height:min(76vh,760px);min-height:540px;isolation:isolate}.hiking-stage:before{content:"";position:absolute;z-index:5;top:-12px;right:12px;bottom:12px;left:-12px;border-top:1px solid #4a504d;border-left:1px solid #4a504d;pointer-events:none}.hiking-stage figure,.hiking-stage .photo-tall,.hiking-stage .photo-moon,.hiking-stage .photo-snow{position:absolute;inset:0;z-index:1;width:100%;height:100%;min-height:0;max-height:none;margin:0;opacity:0;overflow:hidden;background:#090a0a;box-shadow:none;transform:translate3d(0,22px,0) scale(.985);transition:opacity .55s ease,transform .7s cubic-bezier(.2,.7,.2,1)}.hiking-stage figure.is-active{z-index:2;opacity:1;transform:none}.hiking-stage figure img{width:100%;height:100%;object-fit:contain;object-position:center}.hiking-stage .photo-snow img{object-fit:cover;object-position:52% center}}
@media(max-width:820px){.site-header.is-scrolled.is-on-dark{background:rgba(17,19,21,.97)}.hiking-story{min-height:0;padding:96px 20px 88px}.hiking-sticky{display:block;width:100%;height:auto}.hiking-story .section-heading.compact{display:block;margin:0 0 54px}.hiking-story .section-heading.compact>div:nth-child(3){margin-top:30px}.hiking-progress{display:none}.hiking-stage{display:grid;height:auto;gap:18px}.hiking-stage figure,.hiking-stage .photo-tall,.hiking-stage .photo-moon,.hiking-stage .photo-snow{position:relative;inset:auto;width:100%;height:auto;min-height:0;max-height:none;margin:0;opacity:1;transform:none;background:#090a0a}.hiking-stage .photo-tall,.hiking-stage .photo-moon{aspect-ratio:2/3}.hiking-stage .photo-snow{aspect-ratio:3/2}.hiking-stage figure img{height:100%;object-fit:contain}.hiking-stage .photo-snow img{object-fit:cover;object-position:52% center}.contact-band{border-top:1px solid #343836}}
.recognition-heading~.content-block{counter-increment:none}.recognition-heading~.content-block .content-heading:before{content:none;display:none}#work,#education,#research,#recognition,#beyond{scroll-margin-top:78px}
.education-block{display:block;padding-top:40px}.education-block .table-wrap{margin-left:280px}@media(max-width:820px){.education-block .table-wrap{margin-left:0}}
@media(prefers-reduced-motion:reduce){.hiking-story{min-height:0}.hiking-sticky{position:relative;display:block;width:min(var(--max),calc(100% - 48px));height:auto;min-height:0;padding:110px 0}.hiking-stage{display:grid;height:auto;gap:18px;margin-top:54px}.hiking-stage figure,.hiking-stage .photo-tall,.hiking-stage .photo-moon,.hiking-stage .photo-snow{position:relative;inset:auto;height:auto;min-height:0;opacity:1;transform:none}.hiking-stage .photo-tall,.hiking-stage .photo-moon{aspect-ratio:2/3}.hiking-stage .photo-snow{aspect-ratio:3/2}.hiking-progress{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* Major chapters */
.chapter-section:not(.hiking-story){--chapter-opacity:1;--chapter-shift:0px;position:relative;display:grid;grid-template-columns:260px minmax(0,1fr);column-gap:68px;align-items:start;min-height:78vh;padding:142px 0 164px;border-top:0}
.work-chapter{border-top:0!important}
.chapter-section:not(.hiking-story)>.chapter-masthead{grid-column:1;grid-row:1/span 20}
.chapter-section:not(.hiking-story)>:not(.chapter-masthead){grid-column:2}
.chapter-masthead{position:sticky;top:108px;align-self:start;display:block!important;margin:0!important;opacity:var(--chapter-opacity);transform:translate3d(0,var(--chapter-shift),0);will-change:opacity,transform}
.chapter-masthead.chapter-heading{padding-top:0;border-top:0;scroll-margin-top:0}
.chapter-masthead .section-label{display:flex;align-items:center;gap:12px;margin-bottom:26px}
.chapter-masthead .section-label:after{content:"";width:34px;height:1px;background:currentColor;transform:scaleX(var(--chapter-focus,1));transform-origin:left center}
.chapter-masthead h2{max-width:260px;margin:0;font-family:Georgia,"Times New Roman",serif;font-size:56px;line-height:1.02;font-weight:400}
.research-chapter .chapter-masthead h2,.recognition-chapter .chapter-masthead h2{font-size:46px}
.chapter-masthead p{max-width:250px;margin:28px 0 0;color:var(--muted);font-size:15px;line-height:1.55}
.chapter-body{max-width:760px}
.has-scroll-reveal .chapter-reveal{opacity:0;transform:translate3d(0,34px,0);transition:opacity .72s ease,transform .82s cubic-bezier(.2,.72,.2,1)}
.has-scroll-reveal .chapter-reveal.is-revealed{opacity:1;transform:none}
.work-chapter .chapter-body{padding-top:2px;font-size:20px;line-height:1.7}
.work-chapter .model-releases{max-width:620px;margin-top:46px}
.education-intro{max-width:850px;margin:0 0 52px;font-size:20px}
.education-block{display:block;padding:0 0 54px;border-top:0}
.education-block .table-wrap{margin-left:0}
.pku-photo-feature{height:clamp(400px,42vw,560px);margin:8px 0 0}
.research-chapter .publications-block{display:block;min-width:0;padding:0;border-top:0}
.research-chapter .publication-controls{margin-top:32px}
.research-chapter .publication-controls output{color:var(--ink)}
.recognition-chapter>.content-block{display:grid;grid-template-columns:190px minmax(0,1fr);gap:38px;padding:76px 0 100px}
.recognition-chapter>.content-block:first-of-type{border-top:0;padding-top:0}
.recognition-chapter>.content-block .content-heading{position:sticky;top:104px;align-self:start;padding:18px 0;background:rgba(245,246,243,.94);backdrop-filter:blur(12px)}
.recognition-chapter>.content-block .content-heading span{display:none}
.recognition-chapter>.content-block .content-heading h3{max-width:190px;margin:0;font-size:36px}
.recognition-chapter>.content-block tbody tr:first-child th,.recognition-chapter>.content-block tbody tr:first-child td{border-top:1px solid var(--ink)}
.recognition-chapter>.content-block tbody tr:first-child th{box-shadow:none;padding-left:12px}

@media(max-width:980px) and (min-width:821px){.chapter-section:not(.hiking-story){grid-template-columns:220px minmax(0,1fr);column-gap:44px}.chapter-masthead h2{max-width:220px;font-size:48px}.research-chapter .chapter-masthead h2,.recognition-chapter .chapter-masthead h2{font-size:40px}.recognition-chapter>.content-block{grid-template-columns:160px minmax(0,1fr);gap:26px}.recognition-chapter>.content-block .content-heading h3{max-width:160px;font-size:30px}}
@media(max-width:820px){.chapter-section:not(.hiking-story){display:block;width:calc(100% - 40px);min-height:0;padding:88px 0 104px}.chapter-section:not(.hiking-story)>.chapter-masthead,.chapter-section:not(.hiking-story)>:not(.chapter-masthead){display:block}.chapter-masthead{position:relative;top:auto;opacity:1!important;transform:none!important;will-change:auto;margin-bottom:42px!important}.chapter-masthead .section-label{margin-bottom:20px}.chapter-masthead h2{max-width:100%;font-size:44px}.research-chapter .chapter-masthead h2,.recognition-chapter .chapter-masthead h2{font-size:40px}.chapter-masthead p{max-width:520px;margin-top:20px;font-size:16px}.work-chapter .chapter-body{font-size:17px}.work-chapter .model-releases{margin-top:32px}.education-intro{margin:0 0 38px;font-size:17px}.education-block{padding-bottom:38px}.pku-photo-feature{margin:0}.research-chapter .publication-controls{margin-top:24px}.recognition-chapter>.content-block,.recognition-chapter>.content-block:first-of-type{display:block;padding:58px 0 70px}.recognition-chapter>.content-block:first-of-type{padding-top:0}.recognition-chapter>.content-block .content-heading{position:relative;top:auto;margin-bottom:28px;padding:0;background:transparent;backdrop-filter:none}.recognition-chapter>.content-block .content-heading h3{max-width:none;font-size:32px}}
@media(prefers-reduced-motion:reduce){.chapter-masthead{opacity:1!important;transform:none!important;will-change:auto}.has-scroll-reveal .chapter-reveal{opacity:1;transform:none}}

/* Vertical publication index */
.publication-scroll-status{--publication-progress:0%;display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:center;margin-top:34px}
.publication-scroll-status output{color:var(--ink);font-size:11px;font-weight:850}
.publication-scroll-status span{position:relative;height:1px;overflow:hidden;background:var(--line)}
.publication-scroll-status span:before{content:"";position:absolute;inset:0 auto 0 0;width:var(--publication-progress);background:var(--signal)}
.research-chapter .publication-list{display:block;overflow:visible;padding:0;border-top:1px solid var(--ink);scroll-snap-type:none;scrollbar-width:auto}
.research-chapter .publication-list li{position:relative;display:grid;grid-template-columns:48px minmax(0,1fr);gap:18px;min-height:0;margin:0;padding:42px 20px 46px 18px;border-top:0;border-bottom:1px solid var(--line);background:transparent;scroll-snap-align:none;transition:opacity .34s ease,transform .5s cubic-bezier(.2,.72,.2,1)}
.research-chapter .publication-list li:after{content:"";position:absolute;top:-1px;left:0;width:0;height:2px;background:var(--signal);transition:width .52s cubic-bezier(.2,.72,.2,1)}
.has-publication-focus .research-chapter .publication-list li{opacity:1;transform:none}
.has-publication-focus .research-chapter .publication-list.is-interacting li{opacity:.48;transform:translate3d(0,8px,0)}
.has-publication-focus .research-chapter .publication-list li.is-current,.has-publication-focus .research-chapter .publication-list li:hover,.has-publication-focus .research-chapter .publication-list li:focus-within{opacity:1;transform:none}
.research-chapter .publication-list li.is-current:after,.research-chapter .publication-list li:hover:after,.research-chapter .publication-list li:focus-within:after{width:100%}
.research-chapter .publication-list li>div>p:first-child{font-size:19px;line-height:1.52}
.research-chapter .publication-list li>div>p+p{margin-top:10px;font-size:12px}
.research-chapter .publication-list li>div>p+p strong{color:var(--signal)}
.research-chapter .pub-no{padding-top:6px;font-size:11px}
.research-chapter .publications-link{margin-top:28px}
@media(max-width:820px){.publication-scroll-status{margin-top:26px}.research-chapter .publication-list li{grid-template-columns:36px minmax(0,1fr);gap:12px;padding:28px 0 32px 14px}.has-publication-focus .research-chapter .publication-list.is-interacting li{opacity:.68;transform:none}.research-chapter .publication-list li>div>p:first-child{font-size:16px}.research-chapter .publication-list li>div>p+p{font-size:11px}}
@media(prefers-reduced-motion:reduce){.has-publication-focus .research-chapter .publication-list li{opacity:1;transform:none}.research-chapter .publication-list li:after{display:none}}

/* Outdoor profile */
.outdoor-summary{margin-top:34px;border-top:1px solid #454a48}
.outdoor-item{padding:18px 0 20px;border-bottom:1px solid #343936}
.outdoor-item>span{display:block;margin-bottom:7px;color:var(--yellow);font-size:10px;font-weight:850;text-transform:uppercase}
.hiking-story .outdoor-item p{margin:0;color:#eef0ed;font-size:14px;line-height:1.55}
.hiking-story .outdoor-item .outdoor-cn{margin-top:6px;color:#929a96;font-size:12px;line-height:1.55}
.outdoor-profile{display:inline-flex;align-items:center;gap:8px;margin-top:12px;color:#d8ddda;font-size:11px;font-weight:750;text-decoration:none;text-transform:uppercase}
.outdoor-profile:after{content:"\2197";color:var(--yellow);font-size:13px}
.outdoor-profile:hover{color:var(--yellow)}
.outdoor-roles{margin:0}
.outdoor-roles>div{display:grid;grid-template-columns:68px minmax(0,1fr);gap:12px;padding:12px 0;border-top:1px solid #343936}
.outdoor-roles dt{padding-top:2px;color:#7f8783;font-size:9px;font-weight:850;text-transform:uppercase}
.outdoor-roles dd{min-width:0;margin:0}
.outdoor-roles strong{display:block;color:#eef0ed;font-size:13px;line-height:1.45;font-weight:650}
.outdoor-roles small{display:block;margin-top:4px;color:#929a96;font-size:11px;line-height:1.45}
@media(max-width:820px){.outdoor-summary{margin-top:30px}.outdoor-item{padding:20px 0 22px}.hiking-story .outdoor-item p{font-size:15px}.hiking-story .outdoor-item .outdoor-cn{font-size:13px}}

/* Hiking diptych and panorama */
.hiking-story{min-height:0;padding:0}
.hiking-gallery-inner{display:grid;width:min(var(--max),calc(100% - 48px));grid-template-columns:minmax(300px,.72fr) minmax(0,1.28fr);gap:72px;align-items:start;margin:0 auto;padding:148px 0 190px}
.hiking-gallery-inner>.section-heading.compact{position:sticky;top:104px;display:block;margin:0}
.hiking-diptych{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start;min-width:0;padding-top:12px}
.hiking-diptych figure,.hiking-diptych .photo-tall,.hiking-diptych .photo-moon{--portrait-shift:0px;position:relative;grid-column:auto;grid-row:auto;width:100%;aspect-ratio:2/3;margin:0;overflow:hidden;background:#090a0a;transform:translate3d(0,var(--portrait-shift),0);will-change:transform}
.hiking-diptych .photo-moon{margin-top:110px}
.hiking-diptych figure:after{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.12);pointer-events:none}
.hiking-diptych figure img,.hiking-diptych .photo-tall img,.hiking-diptych .photo-moon img{width:100%;height:100%;object-fit:cover;object-position:center}
.hiking-panorama{--panorama-inset:8%;--panorama-scale:1.08;position:relative;width:100%;height:min(78vh,820px);min-height:560px;margin:0;overflow:hidden;background:#d9dfe0;clip-path:inset(0 var(--panorama-inset));will-change:clip-path}
.hiking-panorama img{width:100%;height:100%;object-fit:cover;object-position:52% center;transform:scale(var(--panorama-scale));will-change:transform}
@media(max-width:820px){.hiking-story{padding:0}.hiking-gallery-inner{display:block;width:calc(100% - 40px);margin:0 auto;padding:96px 0 104px}.hiking-gallery-inner>.section-heading.compact{position:relative;top:auto;margin:0 0 52px}.hiking-diptych{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:0}.hiking-diptych figure,.hiking-diptych .photo-tall,.hiking-diptych .photo-moon{aspect-ratio:2/3;transform:none;will-change:auto}.hiking-diptych .photo-moon{margin-top:48px}.hiking-panorama{width:100%;height:auto;min-height:0;aspect-ratio:3/2;clip-path:none}.hiking-panorama img{transform:none;will-change:auto}}
@media(prefers-reduced-motion:reduce){.hiking-diptych figure,.hiking-panorama,.hiking-panorama img{transform:none!important;clip-path:none!important;will-change:auto}}

/* Shared index language */
.recognition-chapter .chapter-masthead h2{font-size:56px}
.model-releases{margin-top:46px;padding-top:0;border-top:0}
.model-releases>span{margin:0;padding:0 0 12px;color:var(--muted)}
.model-releases a{position:relative;padding:15px 12px 15px 18px;border-bottom:1px solid var(--line);font-size:15px;transition:opacity .3s ease,color .2s ease,box-shadow .3s ease}
.model-releases>span+a{border-top:1px solid var(--ink)}
.education-chapter .table-wrap,.recognition-chapter .table-wrap{overflow:visible}
.education-table{border-collapse:separate;border-spacing:0}
.education-table thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.education-table tbody{display:block;border-top:1px solid var(--ink)}
.education-table tr{position:relative;display:grid;grid-template-columns:76px 170px minmax(0,1fr) 142px;align-items:center;border-bottom:1px solid var(--line)}
.education-table td{padding:22px 12px;border:0!important;transition:box-shadow .3s ease}
.education-table td:first-child{padding-left:18px;font-size:14px}
.education-table td:last-child{text-align:right;white-space:nowrap}
.recognition-chapter .modern-table{border-collapse:separate;border-spacing:0}
.recognition-chapter .modern-table tbody{display:block;border-top:1px solid var(--ink)}
.recognition-chapter .modern-table tr{position:relative;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);align-items:start;border-bottom:1px solid var(--line)}
.recognition-chapter .modern-table th,.recognition-chapter .modern-table td,.recognition-chapter>.content-block tbody tr:first-child th,.recognition-chapter>.content-block tbody tr:first-child td{width:auto;padding:18px 12px;border:0;transition:box-shadow .3s ease}
.recognition-chapter .modern-table th{padding-left:18px}
.recognition-chapter>.content-block .content-heading h3{font-size:34px}
.has-index-focus [data-focus-item]{opacity:1;transition:opacity .32s ease,box-shadow .32s ease}
.has-index-focus [data-focus-list].is-interacting [data-focus-item]:not(.is-current):not(:hover):not(:focus-within){opacity:.54}
.has-index-focus [data-focus-item].is-current,.has-index-focus [data-focus-item]:hover,.has-index-focus [data-focus-item]:focus-within{opacity:1}
.has-index-focus .model-releases a:before{content:"";position:absolute;top:-1px;bottom:-1px;left:0;width:3px;background:var(--signal);pointer-events:none;transform:scaleY(0);transform-origin:top center;transition:transform .22s ease}
.has-index-focus .model-releases a.is-current:before,.has-index-focus .model-releases a:hover:before,.has-index-focus .model-releases a:focus-visible:before{transform:scaleY(1)}
.research-chapter .publication-list li:after{top:-1px;bottom:-1px;width:3px;height:auto;transform:scaleY(0);transform-origin:top center}
.research-chapter .publication-list li.is-current:after,.research-chapter .publication-list li:hover:after,.research-chapter .publication-list li:focus-within:after{width:3px;transform:scaleY(1)}
@media(max-width:980px) and (min-width:821px){.recognition-chapter .chapter-masthead h2{font-size:48px}.education-table tr{grid-template-columns:64px 140px minmax(0,1fr) 124px}.recognition-chapter .modern-table tr{grid-template-columns:1fr}.recognition-chapter .modern-table td{padding-top:0;padding-left:18px;color:var(--muted)}}
@media(max-width:820px){.recognition-chapter .chapter-masthead h2{font-size:44px}.model-releases{margin-top:34px}.education-table tr{grid-template-columns:62px minmax(0,1fr);align-items:start;padding:20px 0}.education-table td{padding:3px 10px}.education-table td:first-child{grid-row:1/4;padding:5px 10px 5px 14px}.education-table td:nth-child(n+2){grid-column:2}.education-table td:last-child{text-align:left}.recognition-chapter .modern-table tr{display:block;padding:20px 0}.recognition-chapter .modern-table th,.recognition-chapter .modern-table td{display:block;padding:0 10px 0 14px}.recognition-chapter .modern-table td{margin-top:6px;color:var(--muted)}.has-index-focus [data-focus-list].is-interacting [data-focus-item]:not(.is-current):not(:hover):not(:focus-within){opacity:.72}}
@media(prefers-reduced-motion:reduce){.has-index-focus [data-focus-item]{transition:none}}

/* Recognition alignment fixes */
.recognition-chapter>.content-block,.recognition-chapter>.content-block:first-of-type{display:block;padding:64px 0 82px}
.recognition-chapter>.content-block:first-of-type{padding-top:0}
.recognition-chapter>.content-block .content-heading{position:relative;top:auto;margin:0 0 28px;padding:0;background:transparent;backdrop-filter:none}
.recognition-chapter>.content-block .content-heading h3{max-width:none;margin:0;font-size:34px}
.recognition-chapter>.content-block .table-wrap{width:100%}
@media(max-width:820px){.recognition-chapter>.content-block,.recognition-chapter>.content-block:first-of-type{padding:52px 0 66px}.recognition-chapter>.content-block:first-of-type{padding-top:0}.recognition-chapter>.content-block .content-heading{margin-bottom:22px}.recognition-chapter>.content-block .content-heading h3{font-size:30px}}

/* Item indicators */
.has-index-focus .modern-table tr[data-focus-item]:before{content:"";position:absolute;z-index:1;top:-1px;bottom:-1px;left:0;width:3px;background:var(--signal);pointer-events:none;transform:scaleY(0);transform-origin:top center;transition:transform .22s ease}
.has-index-focus .modern-table tr[data-focus-item].is-current:before,.has-index-focus .modern-table tr[data-focus-item]:hover:before,.has-index-focus .modern-table tr[data-focus-item]:focus-within:before{transform:scaleY(1)}

/* Chapter scroll snapping */
html{scroll-snap-type:none;scroll-padding-top:72px}
.hero,.chapter-section{scroll-snap-align:none}
@media(prefers-reduced-motion:reduce){html{scroll-snap-type:none}}

/* Responsive media and mobile viewport bounds */
.pku-photo-feature picture,.hiking-diptych picture,.hiking-panorama picture{display:block;width:100%;height:100%}
@media(max-width:820px){
  html{scroll-padding-top:64px}
  html,body{max-width:100%;overflow-x:clip}
  html.menu-open,html.menu-open body{overflow:hidden}
  .site-nav{top:0;right:auto;bottom:auto;left:0;width:100vw;height:100dvh;min-height:100vh;overflow-y:auto}
  #work,#education,#research,#recognition,#beyond{scroll-margin-top:0}
  .chapter-section:not(.hiking-story){padding-top:72px;padding-bottom:96px}
  .education-chapter .table-wrap{width:100%;max-width:100%;overflow:hidden}
  .education-table{width:100%;min-width:0}
  .hero-media{background-image:url("../../images/mobile/hero-snow.webp");background-position:50% 52%}
  .pku-photo-feature,.hiking-gallery-inner,.hiking-diptych,.hiking-panorama{max-width:100%;overflow:hidden}
  .pku-photo-feature img{object-position:53% 58%}
  .hiking-diptych .photo-tall img{object-position:56% 70%}
  .hiking-diptych .photo-moon img{object-position:50% 74%}
  .hiking-panorama img{object-position:53% 48%}
}

/* Navigation polish and collision guards */
html.initial-hash{scroll-behavior:auto}
#work,#education,#research,#recognition,#beyond{scroll-margin-top:0}
@media(min-width:821px){.hero-media{background-image:url("../../images/hero-snow-desktop.webp")}}
.site-header:not(.is-scrolled){background:linear-gradient(180deg,rgba(8,9,9,.48),rgba(8,9,9,.08))}
a:focus-visible,button:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
.site-header:not(.is-scrolled) a:focus-visible,.site-header:not(.is-scrolled) button:focus-visible,.site-header.is-on-dark a:focus-visible,.site-header.is-on-dark button:focus-visible{outline-color:var(--yellow)}
.site-nav a[aria-current="true"]{color:var(--yellow)}
.site-header.is-scrolled:not(.is-on-dark) .site-nav a[aria-current="true"]{color:var(--signal)}
.menu-toggle span{transition:transform .2s ease,opacity .2s ease}
.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}
.menu-toggle[aria-expanded="true"]{color:var(--white)}
.menu-toggle[aria-expanded="true"]:focus-visible{outline-color:var(--yellow)}
@media(max-width:980px) and (min-width:821px){.site-nav{gap:20px}.site-nav a{font-size:13px}.nav-contact{padding-right:12px;padding-left:12px}}
@media(max-width:820px){.site-nav{visibility:hidden;pointer-events:none;gap:14px;padding:76px 28px;transition:transform .24s ease,visibility 0s linear .24s}.site-nav.is-open{visibility:visible;pointer-events:auto;transition-delay:0s}.site-nav a{font-size:clamp(28px,9vw,34px)}.site-header.is-scrolled .site-nav.is-open a[aria-current="true"]{color:var(--yellow)}.site-nav .nav-contact{margin-top:10px}}
@media(max-width:820px) and (max-height:700px){.site-nav{justify-content:flex-start;gap:8px;padding-top:76px;padding-bottom:28px}.site-nav a{font-size:27px}.site-nav .nav-contact{margin-top:6px}}