:root {
  --ink: #171717;
  --soft: #555;
  --quiet: #777;
  --line: #dededb;
  --panel: #f6f6f4;
  --blue: #2110ae;
  --serif: Georgia, "Times New Roman", serif;
  --sans: "DM Sans", Arial, sans-serif;
  --mono: "IBM Plex Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { display: flex; flex-direction: column; min-height: 100vh; margin: 0; background: #fff; color: var(--ink); font: 16px/1.55 var(--serif); }
main { flex: 1; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; }
img { max-width: 100%; }
.shell { width: min(calc(100% - 48px), 900px); margin: 0 auto; }
.content-shell { width: min(calc(100% - 48px), 780px); margin: 0 auto; }
.skip-link { position: absolute; top: -80px; left: 20px; z-index: 20; padding: 10px 14px; background: #fff; color: var(--blue); font: 600 13px var(--sans); }
.skip-link:focus { top: 12px; }

/* A single masthead and navigation pattern across the site. */
.site-header { padding: 47px 0 0; }
.header-inner { display: flex; flex-direction: column; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 14px; white-space: nowrap; }
.brand-mark { width: 44px; height: 44px; flex: none; }
.brand-name { font: 600 31px/1 var(--sans); letter-spacing: -.055em; }
.desktop-nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 28px; }
.desktop-nav a { color: #444; font: 500 12px/1.4 var(--mono); transition: color .15s ease; }
.desktop-nav a:hover, .desktop-nav a[aria-current="page"] { color: var(--blue); }

/* Every page uses the same title, measure, and section spacing. */
.page-intro { padding: 70px 0 53px; text-align: center; }
.page-intro-compact { padding-bottom: 38px; }
.page-intro h1 { margin: 0 auto 19px; font: 400 29px/1.16 var(--serif); letter-spacing: -.025em; }
.page-intro p { max-width: 670px; margin: 0 auto; color: #3e3e3e; font: 400 18px/1.5 var(--serif); }
.page-intro-compact p { max-width: 610px; font-size: 16px; }
.home-intro { padding-top: 74px; padding-bottom: 66px; }
.home-intro h1 { font-size: 30px; }
.intro-links { display: flex; justify-content: center; gap: 11px; margin-top: 30px; }
.intro-links a { display: inline-flex; align-items: center; gap: 13px; border: 1px solid var(--line); border-radius: 3px; padding: 9px 13px; font: 500 12px var(--mono); transition: border-color .15s ease, color .15s ease; }
.intro-links a:hover { border-color: var(--blue); color: var(--blue); }
.arrow { color: var(--blue); font: 500 17px/1 Arial, sans-serif; }
.content-section { border-top: 1px solid var(--line); padding: 34px 0 53px; }
.section-heading { margin-bottom: 23px; }
.eyebrow, .entry-type, .paper-row > div > span { display: block; color: var(--quiet); font: 500 10px/1.5 var(--mono); letter-spacing: .045em; }
.section-heading h2 { margin: 7px 0 0; font: 400 26px/1.17 var(--serif); letter-spacing: -.025em; }
.content-section > p { max-width: 690px; margin: 0 0 18px; color: #3e3e3e; }
.concise-section { padding-bottom: 55px; }
.method-list { margin-top: 30px; }
.text-link { display: inline-flex; align-items: center; gap: 12px; border-bottom: 1px solid #bbb; padding-bottom: 4px; font: 500 12px/1.3 var(--mono); }
.text-link:hover { color: var(--blue); border-color: var(--blue); }
.inline-links { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 24px; }

/* Rows replace the old mixed card layouts. */
.entry-list, .info-list, .paper-list { border-top: 1px solid var(--line); }
.content-section > .info-list, .content-section > .paper-list { border-top: 0; }
.entry { display: grid; grid-template-columns: 145px minmax(0, 1fr) 20px; gap: 20px; align-items: start; border-bottom: 1px solid var(--line); padding: 23px 0; }
.entry:hover .entry-main strong { color: var(--blue); }
.entry-type { padding-top: 8px; }
.entry-main strong { display: block; margin-bottom: 4px; font: 400 24px/1.2 var(--serif); letter-spacing: -.02em; transition: color .15s ease; }
.entry-main small { display: block; color: var(--soft); font: 400 14px/1.45 var(--serif); }
.entry > .arrow { padding-top: 5px; }
.info-row { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 22px; align-items: start; border-bottom: 1px solid var(--line); padding: 24px 0; }
.info-row h3 { margin: 0; font: 400 22px/1.2 var(--serif); letter-spacing: -.02em; }
.info-row .eyebrow { margin-bottom: 5px; }
.info-row p { margin: 0; color: var(--soft); font: 400 15px/1.48 var(--serif); }

/* The flagship gets one quiet feature panel. */
.feature-project { margin: 0 0 61px; padding: 37px 42px 34px; background: var(--panel); }
.feature-project h2 { margin: 7px 0 15px; font: 400 29px/1.15 var(--serif); letter-spacing: -.025em; }
.feature-project > p { max-width: 650px; margin: 0; font: 400 17px/1.5 var(--serif); }
.feature-details { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin: 29px 0 27px; border-top: 1px solid #d7d7d3; padding-top: 22px; }
.feature-details h3 { margin: 0 0 6px; font: 500 11px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .045em; }
.feature-details p { margin: 0; color: var(--soft); font: 400 14px/1.45 var(--serif); }
.feature-tags { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 22px 0 25px; color: var(--soft); font: 500 11px/1.4 var(--mono); }
.feature-tags span + span::before { content: "·"; margin-right: 18px; }

.paper-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 20px; align-items: center; border-bottom: 1px solid var(--line); padding: 23px 0; }
.paper-row h3 { margin: 5px 0 4px; font: 400 23px/1.2 var(--serif); }
.paper-row p { margin: 0; color: var(--soft); font: 400 14px/1.45 var(--serif); }
.paper-row > a { display: inline-flex; align-items: center; gap: 8px; border-bottom: 1px solid #bbb; padding-bottom: 3px; white-space: nowrap; font: 500 11px/1.3 var(--mono); }
.paper-row > a:hover { color: var(--blue); }
.fine-print { margin: 17px 0 0; color: var(--quiet); font: 400 11px/1.5 var(--mono); }
.publication-section { padding-top: 0; }
.publication { display: grid; grid-template-columns: 145px minmax(0, 1fr); gap: 20px; border-bottom: 1px solid var(--line); padding: 30px 0 34px; }
.publication-side { display: flex; flex-direction: column; gap: 3px; padding-top: 5px; color: var(--quiet); font: 500 10px/1.5 var(--mono); letter-spacing: .045em; }
.publication-main h2 { margin: 0 0 11px; font: 400 26px/1.2 var(--serif); letter-spacing: -.02em; }
.publication-summary { margin: 0; color: #3e3e3e; font: 400 16px/1.5 var(--serif); }
.publication-authors { margin: 15px 0 0; color: var(--soft); font: 400 13px/1.5 var(--sans); }
.publication-detail { margin-top: 22px; border-top: 1px solid var(--line); padding-top: 13px; }
.publication-detail summary { display: flex; align-items: center; justify-content: space-between; cursor: pointer; list-style: none; color: var(--ink); font: 500 11px/1.4 var(--mono); }
.publication-detail summary::-webkit-details-marker { display: none; }
.publication-detail summary::after { content: "+"; color: var(--blue); font: 18px/1 var(--sans); }
.publication-detail[open] summary::after { content: "−"; }
.publication-detail summary:hover { color: var(--blue); }
.publication-detail summary:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; }
.publication-detail-content { padding: 19px 0 2px; }
.publication-detail-content > p { max-width: 590px; margin: 0 0 19px; color: var(--soft); font: 400 15px/1.5 var(--serif); }
.publication-links { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.publication-links a, .publication-links button { display: inline-flex; align-items: center; gap: 6px; border: 0; border-bottom: 1px solid #bbb; border-radius: 0; padding: 0 0 3px; background: none; color: var(--ink); cursor: pointer; font: 500 11px/1.4 var(--mono); }
.publication-links a:hover, .publication-links button:hover { color: var(--blue); border-color: var(--blue); }
.publication-links button:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; }
.copy-status { color: var(--soft); font: 400 11px/1.4 var(--mono); }
.publication-section > .publication-note { margin-top: 23px; color: var(--soft); font: 400 14px/1.5 var(--serif); }
.publication-note a { border-bottom: 1px solid #bbb; }
.publication-note a:hover { color: var(--blue); border-color: var(--blue); }
.page-people .content-shell { width: min(calc(100% - 48px), 1200px); }
.people-section { padding-top: 24px; }
.people-featured-row { display: flex; justify-content: center; margin-bottom: 12px; }
.people-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.person-card { position: relative; display: flex; flex: 0 0 152px; flex-direction: column; align-items: center; min-width: 0; min-height: 230px; border: 1px solid transparent; border-radius: 14px; padding: 11px 10px 13px; background: var(--panel); text-align: center; transition: border-color .18s ease, background-color .18s ease, transform .18s ease; }
.person-card:hover { border-color: #d5d5d2; background: #f2f2f0; transform: translateY(-2px); }
.person-card-photo { display: grid; flex: none; place-items: center; width: min(100%, 108px); aspect-ratio: 1 / 1; overflow: hidden; border-radius: 8px; background: #e9e9e6; }
.person-card-photo img { display: block; width: 100%; height: 100%; object-fit: cover; }
.person-card-monogram { color: #a2a2a0; font: 400 30px/1 var(--sans); letter-spacing: -.08em; }
.person-card-copy { display: block; width: 100%; margin-top: 12px; }
.person-card-copy strong { display: block; font: 500 14px/1.18 var(--sans); letter-spacing: -.025em; }
.person-card-copy small { display: block; margin-top: 6px; color: #6f737e; font: italic 12px/1.27 var(--serif); }
.person-card-arrow { position: absolute; right: 8px; top: 7px; color: var(--blue); font: 14px/1 var(--sans); opacity: 0; transition: opacity .18s ease; }
.person-card:hover .person-card-arrow, .person-card:focus-visible .person-card-arrow { opacity: 1; }
.person-card-featured { background: #f1f1ef; }
.email-link { display: inline-flex; align-items: baseline; gap: 10px; font: 400 20px/1.3 var(--serif); letter-spacing: -.015em; overflow-wrap: anywhere; }
.email-link:hover { color: var(--blue); }
.contact-section { padding-bottom: 65px; text-align: center; }
.contact-guidance { padding-bottom: 48px; }

.site-footer { margin-top: 55px; border-top: 1px solid var(--line); padding: 45px 0 30px; }
.footer-top { display: flex; flex-direction: column; align-items: center; gap: 25px; }
.footer-top .brand { gap: 9px; }
.footer-top .brand-mark { width: 29px; height: 29px; }
.footer-top .brand-name { font-size: 21px; }
.footer-top > div { display: flex; flex-wrap: wrap; justify-content: center; gap: 11px 21px; }
.footer-top > div a { color: var(--soft); font: 500 11px/1.3 var(--mono); }
.footer-top > div a:hover { color: var(--blue); }
.link-arrow-icon::after { content: "↗"; color: var(--blue); font: 15px Arial, sans-serif; }
.footer-bottom { margin-top: 24px; color: #888; text-align: center; font: 400 10px var(--mono); }

@media (max-width: 650px) {
  .shell, .content-shell { width: min(calc(100% - 38px), 780px); }
  .site-header { padding-top: 30px; }
  .header-inner { gap: 24px; }
  .brand { gap: 10px; }
  .brand-mark { width: 35px; height: 35px; }
  .brand-name { font-size: 24px; }
  .desktop-nav { gap: 11px 17px; }
  .desktop-nav a { font-size: 10px; }
  .page-intro, .home-intro { padding: 52px 0 42px; }
  .page-intro h1, .home-intro h1 { font-size: 22px; }
  .page-intro p { font-size: 16px; }
  .page-intro-compact p { font-size: 15px; }
  .intro-links { margin-top: 25px; }
  .content-section { padding: 28px 0 43px; }
  .section-heading h2 { font-size: 21px; }
  .entry { grid-template-columns: minmax(0, 1fr) 20px; gap: 8px; padding: 20px 0; }
  .entry-type { grid-column: 1; padding: 0; }
  .entry-main { grid-column: 1; }
  .entry-main strong { font-size: 21px; }
  .entry > .arrow { grid-column: 2; grid-row: 1 / 3; align-self: center; padding: 0; }
  .info-row { display: block; padding: 20px 0; }
  .info-row h3 { margin-bottom: 6px; font-size: 21px; }
  .feature-project { margin-bottom: 44px; padding: 26px 22px; }
  .feature-project h2 { font-size: 22px; }
  .feature-project > p { font-size: 15px; }
  .feature-details { grid-template-columns: 1fr; gap: 17px; }
  .feature-tags { gap: 7px 11px; }
  .feature-tags span + span::before { margin-right: 9px; }
  .paper-row { display: block; }
  .paper-row > a { margin-top: 12px; }
  .publication { display: block; padding: 24px 0 27px; }
  .publication-side { flex-direction: row; gap: 11px; padding: 0 0 9px; }
  .publication-main h2 { font-size: 22px; }
  .publication-summary { font-size: 15px; }
  .page-people .content-shell { width: min(calc(100% - 38px), 780px); }
  .email-link { font-size: 18px; }
  .site-footer { margin-top: 30px; }
}

@media (max-width: 350px) {
  .people-grid { gap: 10px; }
  .person-card { flex-basis: 134px; }
  .person-card-photo { width: min(100%, 96px); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}