@charset "UTF-8";
:root{--ink:#202a34;--muted:#64707a;--blue:#234e6c;--line:#dce3e7;--soft:#f4f7f9;--white:#fff;--font:Arial,Helvetica,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:112px}body{margin:0;background:var(--white);color:var(--ink);font:17px/1.7 var(--font);-webkit-font-smoothing:antialiased}a{color:var(--blue);text-underline-offset:4px;text-decoration-thickness:1px}a:hover{text-decoration:underline;color:#122e43}button,summary{font:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--blue);outline-offset:5px}.skip-link{position:absolute;left:20px;top:-100px;background:white;padding:10px;z-index:99}.skip-link:focus{top:10px}.site-header{border-bottom:1px solid var(--line);background:#fffffff5;position:sticky;top:0;z-index:10;backdrop-filter:blur(8px)}.header-inner{max-width:1100px;margin:auto;padding:24px 32px;display:flex;align-items:center;justify-content:space-between;gap:32px}.brand{font-size:21px;font-weight:600;letter-spacing:-.6px;text-decoration:none;color:var(--ink)}.main-nav{display:flex;gap:30px;align-items:center}.main-nav a{color:var(--muted);text-decoration:none;font-size:15px;position:relative;padding:6px 0}.main-nav a:hover,.main-nav a[aria-current=page]{color:var(--ink)}.main-nav a[aria-current=page]:after{content:"";height:2px;background:var(--blue);position:absolute;bottom:-25px;left:0;right:0}.external-mark{font-size:13px;margin-left:3px}.container{max-width:1100px;margin:0 auto;padding:0 32px}h1,h2,h3,p{margin-top:0}h1{font-size:43px;line-height:1.18;letter-spacing:-1.7px;font-weight:500;margin-bottom:24px}h2{font-size:23px;line-height:1.35;letter-spacing:-.5px;font-weight:500}h3{font-size:21px;line-height:1.42;letter-spacing:-.3px;font-weight:500;margin-bottom:9px}p{margin-bottom:21px}.eyebrow{font-size:13px;font-weight:600;color:var(--blue);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:20px}.about-page .header-inner,.about-page .container,.about-page .footer-inner{max-width:1160px}.about-page .header-inner{padding-top:14px;padding-bottom:14px}.about-page .brand{font-size:20px}.about-page .main-nav a[aria-current=page]:after{bottom:-15px}.about-page .footer-inner{padding-top:8px;padding-bottom:8px}.about-page .site-footer{margin-top:0}.about{padding-top:20px;padding-bottom:18px}.about-main{display:grid;grid-template-columns:220px minmax(0,1fr);gap:40px;align-items:start}.portrait{display:block;width:100%;height:auto;aspect-ratio:auto}.portrait-caption{margin-top:16px;color:var(--muted);font-size:14px;line-height:1.6}.bio{min-width:0}.question-number{color:var(--blue);font-weight:600;white-space:nowrap}.bio p{font-size:.6875rem;line-height:1.5;margin-bottom:11px}.bio p:last-child{margin-bottom:0}.contact-email{font-size:.6875rem}.contact-email span{color:var(--muted);margin-right:5px}.bio .intro{font-size:.6875rem;line-height:1.5;margin-bottom:12px}.bio .intro a{color:inherit}.contact{border-top:1px solid var(--line);padding-top:11px;margin-top:14px;display:flex;gap:12px 26px;flex-wrap:wrap}.contact-label{font-size:12px;letter-spacing:1px;color:var(--muted);text-transform:uppercase;display:block;margin-bottom:3px}.contact a{font-size:.6875rem;text-decoration:none}.page-heading{padding:59px 0 37px;border-bottom:1px solid var(--line);margin-bottom:40px}.page-heading h1{margin-bottom:12px}.page-heading p{color:var(--muted);max-width:720px;margin:0;font-size:17px}.page-grid{display:grid;grid-template-columns:165px minmax(0,1fr);gap:52px;padding-bottom:62px}.section-nav{align-self:start;position:sticky;top:123px}.section-nav p{font-size:12px;letter-spacing:1px;color:var(--muted);text-transform:uppercase;margin-bottom:16px}.section-nav a{display:block;padding:7px 0 7px 13px;text-decoration:none;border-left:1px solid var(--line);color:var(--muted);font-size:14px;line-height:1.5}.section-nav a:hover,.section-nav a.is-active{border-left:2px solid var(--blue);color:var(--blue);padding-left:12px}.content-section{margin-bottom:49px;scroll-margin-top:116px}.section-heading{display:flex;align-items:baseline;gap:16px;padding-bottom:17px;border-bottom:1px solid var(--line);margin-bottom:24px}.section-heading h2{margin:0}.section-number{font-size:12px;color:#7d8b95;letter-spacing:1px;font-variant-numeric:tabular-nums}.dissertation p{max-width:730px}.dissertation .lead{font-size:20px;line-height:1.6}.paper{padding:0 0 27px;margin-bottom:27px;border-bottom:1px solid var(--line)}.paper:last-child{margin:0;border:0;padding-bottom:0}.paper h3 a{color:inherit;text-decoration:none}.paper h3 a:hover{color:var(--blue);text-decoration:underline}.meta{font-size:14px;color:var(--muted);line-height:1.6;margin-bottom:10px}.paper .one-line{font-size:16px;margin-bottom:12px;color:#475660;line-height:1.65}.tag{font-size:11px;text-transform:uppercase;letter-spacing:.9px;font-weight:600;color:var(--blue);background:#edf3f7;padding:4px 7px;display:inline-block;margin-bottom:12px}.actions{display:flex;gap:16px;flex-wrap:wrap;margin:13px 0 0;align-items:center}.text-link{font-size:14px;text-decoration:none;font-weight:500}.pdf-label{font-size:10px;font-weight:600;letter-spacing:.6px;border:1px solid #b9c8d2;padding:2px 4px;border-radius:2px;margin-left:4px;vertical-align:1px}.paper details{margin-top:14px}summary{list-style:none;cursor:pointer;font-size:14px;color:var(--blue);display:flex;align-items:center;gap:10px;width:max-content;max-width:100%;font-weight:500}summary::-webkit-details-marker{display:none}summary:before{content:"+";font-size:18px;font-weight:400;width:13px;line-height:1}details[open]>summary:before{content:"−"}.abstract{border-left:2px solid #cbd9e2;padding:0 0 0 18px;margin:17px 0 4px;color:#43515b;font-size:16px;line-height:1.8}.abstract p:last-child{margin-bottom:0}.chapter-list{margin:15px 0 0;padding-left:22px;font-size:16px;color:#43515b}.chapter-list li{padding:4px 0}.subgroup-label{color:var(--muted);font-size:13px;letter-spacing:.6px;font-weight:500;margin:29px 0 23px;padding-bottom:10px;border-bottom:1px solid var(--line)}.course{display:grid;grid-template-columns:1fr auto;gap:18px;padding:0 0 24px;margin-bottom:24px;border-bottom:1px solid var(--line)}.course:last-child{border:0;margin-bottom:0;padding-bottom:0}.course h3{font-size:19px;margin-bottom:5px}.course .meta{margin-bottom:0}.course-year{font-size:14px;color:var(--muted);white-space:nowrap;padding-top:4px}.course .actions{margin-top:9px}.site-footer{border-top:1px solid var(--line);margin-top:6px}.footer-inner{max-width:1100px;margin:auto;padding:25px 32px;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;color:var(--muted);font-size:12px}.footer-inner a{text-decoration:none;color:var(--muted)}.footer-inner a:hover{color:var(--blue)}@media(max-width:820px){.about{padding-top:20px}.about-main{grid-template-columns:190px minmax(0,1fr);gap:30px}h1{font-size:35px}.page-grid{grid-template-columns:140px minmax(0,1fr);gap:30px}.main-nav{gap:21px}.header-inner{gap:20px}.contact{gap:23px}.bio .intro{font-size:.6875rem}}@media(max-width:620px){.header-inner{padding:18px 22px;display:block}.brand{display:block;font-size:20px;margin-bottom:14px}.main-nav{gap:26px}.main-nav a{font-size:14px}.main-nav a[aria-current=page]:after{bottom:-18px}.container{padding:0 23px}.about{padding-top:20px;padding-bottom:20px}.about-main{display:flex;flex-direction:column;gap:26px}.portrait-column{width:min(200px,100%)}.portrait-caption{display:none}h1{font-size:34px;letter-spacing:-1px}.eyebrow{font-size:12px;margin-bottom:15px}.bio .intro{font-size:.6875rem}.bio p{font-size:.6875rem;line-height:1.55}.contact{margin-top:14px;padding-top:11px;gap:12px 24px}.page-heading{padding:34px 0 25px;margin-bottom:23px}.page-heading p{font-size:16px}.page-grid{display:block;padding-bottom:30px}.section-nav{position:static;display:flex;gap:8px 18px;flex-wrap:wrap;padding-bottom:23px;margin-bottom:25px;border-bottom:1px solid var(--line)}.section-nav p{display:none}.section-nav a,.section-nav a:hover,.section-nav a.is-active{padding:0;border:0;font-size:13px}.section-nav a.is-active{text-decoration:underline;text-underline-offset:5px}.section-heading{gap:12px}.section-heading h2{font-size:22px}.content-section{margin-bottom:37px;scroll-margin-top:152px}.paper h3{font-size:20px}.dissertation .lead{font-size:18px}.course{grid-template-columns:1fr;gap:5px}.course-year{grid-row:1;padding:0;font-size:13px}.course h3{font-size:18px}.footer-inner{padding:20px 23px;gap:8px 20px}html{scroll-padding-top:150px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

@media print{.site-header,.section-nav,.site-footer,.skip-link{display:none}.page-grid{display:block}.container{max-width:none;padding:0}.page-heading{padding-top:0}.paper,.course{break-inside:avoid}a{color:inherit}.about{padding:0}.about-main{gap:30px;grid-template-columns:200px 1fr}}

/* Book project: compact prose, fieldwork photographs, and three linked studies. */
.book-page .header-inner{padding-top:16px;padding-bottom:16px}
.book-page .main-nav a[aria-current=page]:after{bottom:-17px}
.book-page .container{max-width:1020px}
.book-heading{padding:30px 0 22px}
.book-heading h1{font-size:28px;line-height:1.25;letter-spacing:-.7px;margin:0}
.book-overview{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:40px;align-items:start;margin-bottom:26px}
.book-introduction p,.study-text p{font-size:.6875rem;line-height:1.75;margin-bottom:15px}
.book-introduction p:last-child,.study-text p:last-child{margin-bottom:0}
.book-introduction strong{font-weight:600}
.book-figure{margin:0;min-width:0}
.book-photo-frame{position:relative;display:block;overflow:hidden;background:#fff;width:100%}
.book-photo-frame img{display:block;width:100%;height:auto;max-width:100%;object-fit:contain}
.book-photo-frame.is-cropped img{position:absolute;height:auto;max-width:none}
.book-photo-frame:focus-visible{outline-offset:4px}
.book-figure figcaption{font-size:.6875rem;line-height:1.55;color:var(--muted);margin-top:9px}
.dissertation-explorer{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.dissertation-explorer>summary{width:100%;gap:12px;font-size:14px;padding:16px 0;line-height:1.5;color:var(--ink)}
.dissertation-explorer>summary:before{color:var(--blue);flex-shrink:0}
.book-studies{padding-top:12px}
.book-study{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:44px;align-items:start;padding:25px 0 30px;border-top:1px solid var(--line)}
.book-study:first-child{border-top:0;padding-top:8px}
.study-number{display:block;color:var(--blue);font-size:11px;letter-spacing:1px;font-variant-numeric:tabular-nums;margin-bottom:10px}
.study-text h2{font-size:18px;line-height:1.4;letter-spacing:-.25px;margin-bottom:14px;font-weight:500}
.book-chart .book-photo-frame{background:#fff;border:1px solid var(--line)}
.book-papers-link{font-size:.6875rem;margin:18px 0 30px}
.book-papers-link a{text-decoration:none}
.photo-viewer{border:0;padding:20px;max-width:min(94vw,1200px);max-height:94vh;background:#fff;color:var(--ink);box-shadow:0 10px 50px #0003;overflow:auto}
.photo-viewer::backdrop{background:#12202cd9}
.photo-viewer-close{display:block;margin:0 0 14px auto;border:1px solid var(--line);background:#fff;color:var(--ink);padding:7px 12px;cursor:pointer;font-size:14px}
.photo-viewer figure{margin:0}
.photo-viewer img{display:block;width:auto;height:auto;max-width:100%;max-height:72vh;object-fit:contain;margin:auto;background:#fff}
.photo-viewer figcaption{margin-top:12px;font-size:13px;line-height:1.5;max-width:850px}
@media(max-width:820px){.book-overview{grid-template-columns:minmax(0,1fr) 200px;gap:28px}.book-study{grid-template-columns:minmax(0,1fr) 280px;gap:28px}.main-nav{gap:18px}}
@media(max-width:620px){.main-nav{flex-wrap:wrap;gap:8px 20px}.book-page .main-nav a[aria-current=page]:after{bottom:-4px}.book-heading{padding:24px 0 20px}.book-heading h1{font-size:26px}.book-overview{display:flex;flex-direction:column;gap:20px;margin-bottom:24px}.book-overview-photo{width:100%;max-width:300px}.book-study{grid-template-columns:1fr;gap:18px;padding:22px 0}.book-study .book-figure{width:100%;max-width:440px}.dissertation-explorer>summary{font-size:13px}.photo-viewer{padding:14px;max-width:96vw}.photo-viewer img{max-height:70vh}}
@media print{.book-overview{grid-template-columns:1fr 200px}.book-study{break-inside:avoid}.photo-viewer{display:none}}

/* Compact headings for the Papers page. */
.papers-page .page-heading h1{font-size:28px;letter-spacing:-.7px}
.papers-page .section-heading h2{font-size:20px}
.papers-page .paper h3{font-size:16px;line-height:1.5;letter-spacing:-.1px;margin-bottom:6px}

/* Begin section pages directly with their content. */
.book-page .container,.papers-page .container,.teaching-page .container{padding-top:30px}
@media(max-width:620px){.book-page .container,.papers-page .container,.teaching-page .container{padding-top:22px}}

/* Teaching: two Stanford columns, followed by Cornell. */
.teaching-layout{padding-bottom:32px}
.teaching-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px;margin-bottom:28px}
.teaching-columns>.content-section{min-width:0;margin:0}
.teaching-columns>#scpku{position:relative}
.teaching-columns>#scpku:before{content:"";position:absolute;left:-20px;top:0;bottom:0;width:1px;background:var(--line)}
.teaching-page .section-heading{gap:12px;padding-bottom:12px;margin-bottom:18px}
.teaching-page .section-heading h2{font-size:18px;line-height:1.4;letter-spacing:-.25px}
.teaching-page .course{display:block;min-width:0;padding-bottom:16px;margin-bottom:16px}
.teaching-page .course:last-child{padding-bottom:0;margin-bottom:0}
.teaching-page .course-heading{display:flex;align-items:baseline;gap:12px;margin-bottom:6px}
.teaching-page .course h3{flex:1;min-width:0;font-size:16px;line-height:1.4;letter-spacing:-.1px;margin:0}
.teaching-page .course-year{flex-shrink:0;font-size:13px;line-height:1.4;padding:0}
.teaching-page .course .meta{font-size:13px;line-height:1.55}
.teaching-page .course .actions{margin-top:7px;gap:8px 18px}
.teaching-page .course .text-link{white-space:nowrap}
.teaching-page #cornell{margin:0;padding-top:20px;border-top:1px solid var(--line)}
.cornell-courses{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px}
.teaching-page .cornell-courses .course{border:0;margin:0;padding:0}
@media(max-width:800px){.teaching-columns,.cornell-courses{grid-template-columns:1fr;gap:26px}.teaching-columns>#scpku:before{display:none}.teaching-page .course-heading{flex-wrap:wrap;gap:4px 12px}.teaching-page .course h3{flex-basis:260px}.teaching-layout{padding-bottom:24px}}

/* Keep the active tab underline attached to its link when mobile navigation wraps. */
@media(max-width:620px){.main-nav a[aria-current=page]:after,.about-page .main-nav a[aria-current=page]:after{bottom:-4px}}