/* ==========================================================================
   chenxy99.github.io · "Attention Lab"
   Tokens → base → chrome → home → publications → dissertation → 404 → print
   Geist / Geist Mono are self-hosted (SIL OFL 1.1, see ../fonts/OFL.txt).
   ========================================================================== */

@font-face {
  font-family: "Geist"; font-style: normal; font-weight: 400 700; font-display: swap;
  src: url("../fonts/geist-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Geist Mono"; font-style: normal; font-weight: 400 600; font-display: swap;
  src: url("../fonts/geist-mono-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* Metric-matched fallbacks keep line breaks stable while the web fonts load. */
@font-face { font-family: "Geist Fallback"; src: local("Arial"), local("ArialMT"), local("Helvetica"); size-adjust: 103.57%; ascent-override: 97.04%; descent-override: 28.48%; line-gap-override: 0%; }
@font-face { font-family: "Geist Mono Fallback"; src: local("Courier New"), local("CourierNewPSMT"); size-adjust: 99.98%; ascent-override: 100.52%; descent-override: 29.5%; line-gap-override: 0%; }

/* ---------- Tokens ---------- */
:root {
  --bg: #F8F9FB; --surface: #FFFFFF;
  --ink: #0E1525; --ink-2: #3B4456; --ink-3: #5C6577;
  --line: #E3E7EE; --line-strong: #7C869A;
  --accent: #2F4FE0; --accent-hover: #2340C2; --accent-soft: #EAEEFF; --accent-line: #A8B5F0; --on-accent: #FFFFFF;
  --fix: #F2542D; --fix-ink: #A8300F; --fix-soft: #FFE9E2;
  --chip: #EEF1F6; --plate: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(14, 21, 37, .05);
  --shadow: 0 1px 2px rgba(14, 21, 37, .06), 0 10px 28px rgba(14, 21, 37, .08);
  color-scheme: light;

  --sans: "Geist", "Geist Fallback", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "Geist Mono", "Geist Mono Fallback", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --maxw: 1120px; --gut: 24px; --bar: 60px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0B0F17; --surface: #121826;
    --ink: #E8ECF4; --ink-2: #B7C0D0; --ink-3: #8C96A8;
    --line: #232B3B; --line-strong: #5E6982;
    --accent: #8EA2FF; --accent-hover: #B3C1FF; --accent-soft: #1A2347; --accent-line: #3F4A74; --on-accent: #0B0F17;
    --fix: #FF7A59; --fix-ink: #FFB49E; --fix-soft: #3A1A12;
    --chip: #1A2130; --plate: #FFFFFF;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow: 0 1px 2px rgba(0, 0, 0, .45), 0 10px 28px rgba(0, 0, 0, .4);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0B0F17; --surface: #121826;
  --ink: #E8ECF4; --ink-2: #B7C0D0; --ink-3: #8C96A8;
  --line: #232B3B; --line-strong: #5E6982;
  --accent: #8EA2FF; --accent-hover: #B3C1FF; --accent-soft: #1A2347; --accent-line: #3F4A74; --on-accent: #0B0F17;
  --fix: #FF7A59; --fix-ink: #FFB49E; --fix-soft: #3A1A12;
  --chip: #1A2130; --plate: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
  --shadow: 0 1px 2px rgba(0, 0, 0, .45), 0 10px 28px rgba(0, 0, 0, .4);
  color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--bar) + 20px); }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  overflow-wrap: break-word;
}
h1, h2, h3, h4, p, ul, ol, dl, dd, figure, blockquote, pre { margin: 0; }
ul, ol { padding: 0; }
h1, h2, h3, h4 { color: var(--ink); text-wrap: balance; }
img { display: block; max-width: 100%; height: auto; }
b, strong { font-weight: 600; }
cite { font-style: normal; }
[hidden] { display: none !important; }
a {
  color: var(--accent);
  text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px;
  text-decoration-color: var(--accent-line);
}
a:hover { color: var(--accent-hover); text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
::selection { background: var(--accent-soft); color: var(--ink); }
button { font: inherit; color: inherit; }

.wrap { max-width: calc(var(--maxw) + 2 * var(--gut)); margin: 0 auto; padding: 0 var(--gut); }
.nw { white-space: nowrap; }
.vh { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
html:not(.js) .js-only { display: none !important; }
.print-only { display: none; }
.i { display: inline-block; width: 16px; height: 16px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; vertical-align: -3px; }
.i-lg { width: 24px; height: 24px; }

.skip {
  position: absolute; left: 12px; top: -80px; z-index: 100;
  padding: 10px 16px; border-radius: 10px; background: var(--ink); color: var(--bg);
  font-weight: 600; text-decoration: none;
}
.skip:focus { top: 12px; color: var(--bg); }

/* ---------- Buttons, chips, links ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 8px 16px;
  border: 1px solid var(--line-strong); border-radius: 999px; background: var(--surface); color: var(--ink);
  font: 500 14.5px/1.2 var(--sans); text-decoration: none; white-space: nowrap; cursor: pointer;
}
.btn:hover { color: var(--ink); border-color: var(--ink-2); background: var(--surface); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }
.btn-ink { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.btn-ink:hover { background: var(--ink-2); border-color: var(--ink-2); color: var(--bg); }
.btn-sm { min-height: 36px; padding: 6px 15px; font-size: 14px; }
.btn-long { white-space: normal; max-width: 100%; line-height: 1.35; }
.btn .i-arrow { margin-right: -2px; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  display: inline-flex; align-items: center; padding: 5px 8px; border-radius: 6px;
  background: var(--chip); color: var(--ink-2);
  font: 500 12.5px/1 var(--sans); letter-spacing: 0; white-space: nowrap;
}
.chip-fix { background: var(--fix-soft); color: var(--fix-ink); }
.chip-line { background: transparent; box-shadow: inset 0 0 0 1px var(--line-strong); }

.links { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin-top: 12px; }
.lk {
  display: inline-flex; align-items: center; min-height: 28px; padding: 5px 10px;
  border: 1px solid var(--line-strong); border-radius: 7px; color: var(--ink-2);
  font: 500 13px/1.1 var(--sans); text-decoration: none; white-space: nowrap;
}
.lk:hover { border-color: var(--accent); color: var(--accent); }
.lk-s { min-height: 24px; padding: 3px 8px; font-size: 12px; vertical-align: 1px; margin-left: 4px; }

.more { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; font-size: 14.5px; text-decoration: none; white-space: nowrap; }
.more:hover { text-decoration: underline; }

.eyebrow {
  font: 500 12.5px/1.45 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3);
}

/* ---------- Top bar ---------- */
.bar { position: sticky; top: 0; z-index: 50; background: var(--bg); border-bottom: 1px solid var(--line); }
.bar-in { display: flex; align-items: center; gap: 16px; min-height: var(--bar); }
.brand {
  display: inline-flex; align-items: center; gap: 10px; margin-right: auto; padding: 4px 0;
  color: var(--ink); font-weight: 600; font-size: 16px; letter-spacing: -.01em; text-decoration: none; white-space: nowrap;
}
.brand:hover { color: var(--ink); }
.mark { width: 26px; height: 26px; flex: none; }
.mk-line { fill: none; stroke: var(--accent); stroke-width: 2.25; stroke-linecap: round; }
.mk-a { fill: var(--fix-soft); stroke: var(--fix); stroke-width: 2.75; }
.mk-b { fill: var(--accent); }
.nav { display: flex; align-items: center; gap: 2px; }
.nav a, .menu-panel a { color: var(--ink-2); font-size: 14.5px; font-weight: 500; text-decoration: none; border-radius: 8px; }
.nav a { padding: 8px 11px; }
.nav a:hover, .menu-panel a:hover { background: var(--chip); color: var(--ink); }
.nav a[aria-current="page"], .menu-panel a[aria-current="page"] { color: var(--ink); background: var(--chip); }
.bar-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: inline-grid; place-items: center; width: 36px; height: 36px; padding: 0;
  border: 1px solid var(--line-strong); border-radius: 999px; background: transparent; color: var(--ink); cursor: pointer;
}
.icon-btn:hover { border-color: var(--ink-2); }
.theme-toggle { display: none; }
.js .theme-toggle { display: inline-grid; }
.theme-toggle .i-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .i-sun { display: inline-block; }
:root[data-theme="dark"] .theme-toggle .i-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .i-sun { display: inline-block; }
  :root:not([data-theme="light"]) .theme-toggle .i-moon { display: none; }
}
.menu { display: none; position: relative; }
.menu > summary { list-style: none; }
.menu > summary::-webkit-details-marker { display: none; }
.menu .i-close, .menu[open] .i-menu { display: none; }
.menu[open] .i-close { display: inline-block; }
.menu-panel {
  position: absolute; right: 0; top: calc(100% + 12px); z-index: 60; display: grid; min-width: 220px; padding: 6px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow);
}
.menu-panel a { padding: 11px 12px; color: var(--ink); }

/* ---------- Sections ---------- */
.section { padding: 80px 0; border-top: 1px solid var(--line); scroll-margin-top: -40px; }
.shead { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px 24px; margin-bottom: 32px; }
.shead h2 { display: flex; align-items: center; gap: 14px; font: 650 28px/1.2 var(--sans); letter-spacing: -.02em; }
.fixdot {
  display: inline-grid; place-items: center; flex: none; width: 30px; height: 30px; border-radius: 50%;
  border: 1.5px solid var(--fix); background: var(--fix-soft); color: var(--fix-ink);
  font: 600 13px/1 var(--mono); letter-spacing: 0;
}
.label-h { font: 650 28px/1.2 var(--sans); letter-spacing: -.02em; }
.split { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 20px 48px; align-items: start; }

/* ---------- Hero ---------- */
.hero { padding: 56px 0 56px; }
.hero + .section { padding-top: 64px; }
.hero-grid {
  display: grid; grid-template-columns: minmax(0, 1fr) 260px; grid-template-areas: "id portrait" "body portrait";
  column-gap: 72px; align-items: start;
}
.hero-id { grid-area: id; }
.hero-body { grid-area: body; }
.portrait { grid-area: portrait; padding-top: 6px; }
.portrait img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 20px; background: #FFFFFF; box-shadow: 0 0 0 1px var(--line), var(--shadow-sm); }
.hero h1 { margin-top: 14px; font: 650 clamp(44px, 6vw, 68px)/1 var(--sans); letter-spacing: -.035em; }
.deck { margin-top: 24px; max-width: 38ch; font-size: clamp(19px, 1.1vw + 13px, 23px); line-height: 1.45; letter-spacing: -.01em; color: var(--ink-2); }
.deck b { color: var(--ink); font-weight: 600; }
.nw { white-space: nowrap; }
.fx { text-decoration: none; }
.fx sup {
  display: inline-grid; place-items: center; width: 19px; height: 19px; margin: 0 1px 0 3px; border-radius: 50%;
  border: 1.5px solid var(--accent); background: var(--accent-soft); color: var(--accent);
  font: 600 10.5px/1 var(--mono); vertical-align: text-top; position: relative; top: -3px;
}
.fx:hover sup { background: var(--accent); color: var(--on-accent); }
.meta { margin-top: 20px; max-width: 64ch; color: var(--ink-3); font-size: 15.5px; line-height: 1.6; }
.meta a { color: var(--ink-2); text-decoration-color: var(--line-strong); }
.meta a:hover { color: var(--accent); text-decoration-color: currentColor; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.actions .grp { display: flex; flex-wrap: wrap; gap: 8px; }

.award {
  display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 14px 18px;
  margin-top: 48px; padding: 18px 22px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-sm);
}
.medal { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 12px; background: var(--fix-soft); color: var(--fix-ink); }
.award-title { font-weight: 600; font-size: 16.5px; letter-spacing: -.01em; color: var(--ink); line-height: 1.4; }
.award-sub { margin-top: 2px; color: var(--ink-3); font-size: 14.5px; line-height: 1.5; }
.award-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; white-space: nowrap; text-decoration: none; }
.award-link:hover { text-decoration: underline; }
.award-links { display: flex; flex-wrap: wrap; gap: 6px 16px; font-weight: 500; font-size: 14.5px; }

/* ---------- Highlights ---------- */
.hl { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; list-style: none; }
.card {
  position: relative; display: flex; flex-direction: column; overflow: hidden;
  background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
  transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.card:has(a:focus-visible) { outline: 2px solid var(--accent); outline-offset: 3px; }
.plate { aspect-ratio: 16 / 10; overflow: hidden; background: var(--plate); }
.plate picture { display: contents; }
.plate img { width: 100%; height: 100%; min-height: 0; object-fit: contain; }
.card .plate { border-bottom: 1px solid var(--line); }
.card-body { display: flex; flex-direction: column; gap: 8px; flex: 1; padding: 16px 18px 20px; }
.card h3 { margin-top: 2px; font: 600 17.5px/1.3 var(--sans); letter-spacing: -.01em; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.card h3 a:focus-visible { outline: none; }
.card p { color: var(--ink-3); font-size: 14.5px; line-height: 1.5; }

/* ---------- About / Contact (label + content) ---------- */
.prose p { max-width: 68ch; font-size: 17px; line-height: 1.7; color: var(--ink-2); }
.prose p + p { margin-top: 14px; }
.prose a { color: var(--ink); text-decoration-color: var(--line-strong); }
.prose a:hover { color: var(--accent); text-decoration-color: currentColor; }

/* ---------- Research ---------- */
.pillars { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: auto auto 1fr; gap: 0 20px; }
.pillar {
  display: grid; grid-row: span 3; grid-template-rows: subgrid; row-gap: 10px; align-content: start;
  padding: 24px 24px 22px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px;
}
.pillar h3 { display: flex; align-items: center; gap: 12px; font: 600 20px/1.25 var(--sans); letter-spacing: -.015em; }
.pnum {
  display: inline-grid; place-items: center; flex: none; width: 26px; height: 26px; border-radius: 50%;
  border: 1.5px solid var(--accent); background: var(--accent-soft); color: var(--accent); font: 600 12px/1 var(--mono);
}
.pillar > p { color: var(--ink-2); font-size: 15.5px; line-height: 1.55; }
.ppapers {
  display: grid; grid-template-columns: max-content minmax(0, 1fr); column-gap: 12px; align-self: start; align-content: start;
  margin-top: 6px; padding-top: 12px; border-top: 1px solid var(--line); list-style: none;
}
.ppapers li { grid-column: 1 / -1; display: grid; grid-template-columns: subgrid; }
.ppapers a { grid-column: 1 / -1; display: grid; grid-template-columns: subgrid; align-items: center; padding: 5px 0; color: var(--ink-2); font-size: 14.5px; line-height: 1.4; text-decoration: none; }
.ppapers .chip { justify-self: start; }
.ppapers a:hover .pt { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.ppapers .rel-h { display: block; margin-top: 8px; padding-top: 10px; border-top: 1px dashed var(--line); font: 600 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.ne { display: grid; gap: 14px; margin-top: 32px; padding: 20px 24px; border-radius: 14px; background: var(--chip); }
.ne > div { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 16px; align-items: baseline; }
.ne dt { font: 600 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.ne dd { color: var(--ink-2); max-width: 84ch; }

/* ---------- Experience timeline ---------- */
.tl { list-style: none; }
.tl > li { display: grid; grid-template-columns: 180px 30px minmax(0, 1fr); column-gap: 24px; padding-bottom: 36px; }
.tl > li:last-child { padding-bottom: 0; }
.tl-date { padding-top: 5px; text-align: right; font: 500 13px/1.5 var(--mono); color: var(--ink-3); }
.tl-node { position: relative; display: flex; justify-content: center; }
.tl-node > span {
  position: relative; z-index: 1; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%;
  border: 1.5px solid var(--line-strong); background: var(--surface); color: var(--ink-2); font: 600 12px/1 var(--mono);
}
.tl-node::before { content: ""; position: absolute; top: 30px; bottom: -36px; left: calc(50% - .75px); width: 1.5px; background: var(--line-strong); }
.tl > li:last-child .tl-node::before { display: none; }
.tl > li.now .tl-node > span { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
/* plain dots, no numbers */
.tl-node > span { width: 12px; height: 12px; margin-top: 7px; font-size: 0; }
.tl-node::before { top: 19px; }
.tl > li.now .tl-node > span { background: var(--accent); }
.tl h3 { font: 600 18px/1.35 var(--sans); letter-spacing: -.01em; padding-top: 2px; }
.tl .loc { color: var(--ink-3); font-weight: 400; }
.tl .role { margin-top: 2px; color: var(--ink); font-weight: 500; }
.tl .note { margin-top: 8px; max-width: 74ch; color: var(--ink-2); }
.earlier { margin-top: 12px; max-width: 74ch; }
.earlier-h { font: 600 11.5px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.earlier ul { list-style: none; margin-top: 8px; border-left: 1.5px solid var(--line); padding-left: 14px; display: grid; gap: 4px; }
.earlier li { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2px 16px; font-size: 14.5px; color: var(--ink-2); }
.earlier .d { font: 500 12.5px/1.8 var(--mono); color: var(--ink-3); }
.tl .ctx { margin-top: 10px; font-size: 14px; color: var(--ink-3); }

/* ---------- Selected publications ---------- */
.pubtools { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin: -12px 0 14px; }
.seg { display: inline-flex; flex-wrap: wrap; gap: 2px; padding: 3px; border: 1px solid var(--line-strong); border-radius: 22px; background: var(--surface); }
.seg button, .seg label > span {
  display: inline-flex; align-items: center; min-height: 32px; padding: 0 14px; border: 0; border-radius: 999px;
  background: none; color: var(--ink-2); font: 500 13.5px/1 var(--sans); cursor: pointer; white-space: nowrap;
}
.seg button:hover, .seg label > span:hover { color: var(--ink); }
.seg button[aria-pressed="true"], .seg input:checked + span { background: var(--ink); color: var(--bg); }
.seg label { position: relative; display: inline-flex; }
.seg input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.seg input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.count { font: 500 13px/1.4 var(--mono); color: var(--ink-3); }
.legend { font-size: 13.5px; color: var(--ink-3); }
.legend b { color: var(--ink); }
.pubs { list-style: none; margin-top: 8px; }
.pub { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 28px; padding: 26px 0; border-top: 1px solid var(--line); }
.pub .plate { padding: 8px; border: 1px solid var(--line); border-radius: 10px; }
.pub-body { min-width: 0; }
.pub-title { margin: 10px 0 4px; font: 600 18px/1.35 var(--sans); letter-spacing: -.01em; }
.pub-title a { color: var(--ink); text-decoration: none; }
.pub-title a:hover { color: var(--accent); text-decoration: underline; text-decoration-color: currentColor; }
.authors { color: var(--ink-2); font-size: 14.5px; }
.authors b { color: var(--ink); }
.tldr { margin-top: 8px; color: var(--ink-3); font-size: 14.5px; max-width: 80ch; }

/* ---------- News ---------- */
.news { list-style: none; max-width: 900px; }
.news li { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 20px; padding: 14px 0; border-top: 1px solid var(--line); }
.news > li:first-child { border-top: 0; padding-top: 0; }
.news time { padding-top: 2px; font: 500 13px/1.6 var(--mono); color: var(--ink-3); white-space: nowrap; }
.news p { max-width: 76ch; color: var(--ink-2); }
details > summary { cursor: pointer; }
.more-news, .bio { max-width: 900px; }
.more-news > summary, .bio > summary {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 18px; min-height: 36px; padding: 6px 14px;
  border: 1px solid var(--line-strong); border-radius: 999px; list-style: none;
  font-weight: 500; font-size: 14.5px; color: var(--ink);
}
.more-news > summary::-webkit-details-marker, .bio > summary::-webkit-details-marker,
.bib > summary::-webkit-details-marker, .pat > summary::-webkit-details-marker { display: none; }
.more-news > summary:hover, .bio > summary:hover { border-color: var(--ink-2); }
details[open] > summary .i-chev { transform: rotate(180deg); }
.more-news .news { margin-top: 16px; }
.more-news .news > li:first-child { border-top: 1px solid var(--line); padding-top: 14px; }

/* ---------- Honors & service ---------- */
.two { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 32px 64px; }
.sub-h { font: 600 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); padding-bottom: 12px; }
.sub-h2 { margin-top: 36px; }
.sub-note { margin-left: 6px; font: 400 13px/1 var(--sans); text-transform: none; letter-spacing: 0; color: var(--ink-3); }
.hlist { list-style: none; }
.hlist li { display: grid; grid-template-columns: 92px minmax(0, 1fr); gap: 16px; padding: 12px 0; border-top: 1px solid var(--line); }
.yr { padding-top: 2px; font: 500 13px/1.6 var(--mono); color: var(--ink-3); }
.hlist p { color: var(--ink); }
.hlist .hl-links { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.hl-links .lk-s { margin-left: 0; }
.svc-label { margin-top: 2px; padding-top: 12px; border-top: 1px solid var(--line); font-size: 14px; font-weight: 600; color: var(--ink); }
.svc { margin-top: 4px; padding-bottom: 16px; color: var(--ink-2); font-size: 14.5px; }
.conf { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 24px; margin-top: 8px; }
.conf li { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; border-bottom: 1px dashed var(--line); font-size: 14.5px; }
.conf .v { font-weight: 500; color: var(--ink); }
.conf .yrs { font: 500 12.5px/1.8 var(--mono); color: var(--ink-3); text-align: right; }
.teach { list-style: none; }
.teach li { padding: 10px 0; border-top: 1px solid var(--line); }
.teach .code { font: 600 12.5px/1 var(--mono); color: var(--ink-2); margin-right: 4px; }
.teach p { color: var(--ink); }
.teach .terms { color: var(--ink-3); font-size: 14px; }

/* ---------- Contact ---------- */
.contact { max-width: 920px; border-bottom: 1px solid var(--line); }
.c-row { display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: 20px; align-items: baseline; padding: 16px 0; border-top: 1px solid var(--line); }
.c-row dt { font: 600 12px/1.9 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.c-row dd { min-width: 0; }
.c-email-dd { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; }
.c-email { font: 500 18px/1.4 var(--sans); letter-spacing: -.01em; color: var(--ink); text-decoration: none; overflow-wrap: anywhere; }
.c-email:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
.copy.copy-in { margin-top: 0; min-height: 30px; padding: 3px 10px; font-size: 12.5px; }
.copy-in .i { width: 14px; height: 14px; vertical-align: -2px; }
.c-links { display: flex; flex-wrap: wrap; gap: 6px 22px; list-style: none; }
.c-links a { display: inline-flex; align-items: center; gap: 3px; min-height: 28px; font: 500 15px/1.4 var(--sans); color: var(--ink); text-decoration: none; }
.c-links a .i { width: 13px; height: 13px; color: var(--ink-3); transition: transform .15s ease, color .15s ease; }
.c-links a:hover { color: var(--accent); }
.c-links a:hover .i { color: var(--accent); transform: translate(1px, -1px); }
.contact .bio > summary { display: inline-flex; align-items: center; gap: 6px; min-height: 28px; margin-top: 0; padding: 0; border: 0; border-radius: 0; list-style: none; font: 500 15px/1.4 var(--sans); color: var(--ink-2); }
.contact .bio > summary:hover { color: var(--accent); }
.contact .bio > summary .i { width: 15px; height: 15px; }
.contact .bio-box { margin-top: 10px; }
.bio-box { margin-top: 14px; padding: 18px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
.bio-box p { max-width: 72ch; color: var(--ink-2); }
.copy {
  display: inline-flex; align-items: center; gap: 6px; min-height: 32px; margin-top: 12px; padding: 4px 12px;
  border: 1px solid var(--line-strong); border-radius: 8px; background: var(--surface); color: var(--ink);
  font: 500 13px/1 var(--sans); cursor: pointer;
}
.copy:hover { border-color: var(--accent); color: var(--accent); }
.copy.ok { border-color: var(--accent); color: var(--accent); }

/* ---------- Footer ---------- */
.foot { padding: 48px 0 56px; border-top: 1px solid var(--line); color: var(--ink-3); font-size: 14px; }
/* The widget paints its own background (co= colour); the box stays empty and collapses if the script is blocked. */
.visitor-map { width: 280px; max-width: 100%; margin: 0 auto 36px; border-radius: 12px; overflow: hidden; }
.visitor-map a { text-decoration: none; }
/* The map always loads in light colours; dark mode inverts it (hue-rotate keeps the dots red). */
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) #mmv-slot { filter: invert(1) hue-rotate(180deg); } }
:root[data-theme="dark"] #mmv-slot { filter: invert(1) hue-rotate(180deg); }
.foot-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 24px; }
.theme-pick { display: flex; align-items: center; gap: 12px; min-width: 0; margin: 0; padding: 0; border: 0; }
.theme-pick legend { float: left; padding: 0; font: 600 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.theme-pick .seg label > span { min-height: 30px; padding: 0 13px; }

/* ---------- Publications page ---------- */
.page-head { padding: 56px 0 28px; }
.page-head h1 { margin-top: 12px; font: 650 clamp(36px, 4.4vw, 52px)/1.05 var(--sans); letter-spacing: -.03em; }
.counts { margin-top: 16px; font-size: 17px; color: var(--ink-2); }
.page-head .legend { margin-top: 8px; font-size: 14.5px; }
.filters { display: grid; gap: 12px; margin-bottom: 8px; padding: 18px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
.fgroup { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.flabel { width: 64px; font: 600 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.filters button {
  display: inline-flex; align-items: center; gap: 6px; min-height: 32px; padding: 0 12px;
  border: 1px solid var(--line-strong); border-radius: 999px; background: var(--surface); color: var(--ink-2);
  font: 500 13.5px/1 var(--sans); cursor: pointer;
}
.filters button:hover { color: var(--ink); border-color: var(--ink-2); }
.filters button[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.filters .n { font: 500 11.5px/1 var(--mono); color: var(--ink-3); }
.filters button[aria-pressed="true"] .n { color: var(--bg); }
.filters .reset { border-style: dashed; }
.filters .reset:disabled { opacity: .55; cursor: default; }
.fgroup-last .count { margin-left: auto; }
.fnote { font-size: 13px; color: var(--ink-3); }
.plist { padding-bottom: 72px; }
.year { padding-top: 36px; }
.year-h { padding-bottom: 10px; border-bottom: 1px solid var(--ink); font: 600 15px/1 var(--mono); letter-spacing: .04em; color: var(--ink); }
.entry { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 28px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.entry:target { background: var(--accent-soft); box-shadow: 0 0 0 10px var(--accent-soft); border-radius: 2px; }
.entry-side { min-width: 0; }
.pid { display: inline-block; padding: 3px 0; font: 600 13px/1.2 var(--mono); color: var(--ink-3); text-decoration: none; }
.pid:hover { color: var(--accent); text-decoration: underline; }
.thumb { margin-top: 10px; padding: 4px; border: 1px solid var(--line); border-radius: 8px; }
.entry-main { min-width: 0; }
.entry-title { margin: 8px 0 4px; font: 600 17px/1.4 var(--sans); letter-spacing: -.01em; }
.entry-title a { color: var(--ink); text-decoration: none; }
.entry-title a:hover { color: var(--accent); text-decoration: underline; text-decoration-color: currentColor; }
.venue { margin-top: 2px; color: var(--ink-3); font-size: 14.5px; }
.venue strong { color: var(--ink-2); }
.entry .links { margin-top: 10px; }
.bib { margin-top: 6px; }
.bib > summary {
  display: inline-flex; align-items: center; gap: 6px; min-height: 28px; padding: 5px 10px; list-style: none;
  border: 1px solid var(--line-strong); border-radius: 7px; color: var(--ink-2); font: 500 13px/1.1 var(--sans);
}
.bib > summary:hover { border-color: var(--accent); color: var(--accent); }
.bib > summary .i { width: 14px; height: 14px; }
.bib-box { margin-top: 10px; padding: 14px 16px 12px; background: var(--chip); border: 1px solid var(--line); border-radius: 10px; }
.bib-box pre { font: 400 12.5px/1.6 var(--mono); color: var(--ink-2); white-space: pre-wrap; overflow-wrap: anywhere; }
.bib-box .copy { margin-top: 10px; }
.patents { margin-top: 44px; }
.pat > summary { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; padding: 16px 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); list-style: none; }
.pat > summary h2 { font: 650 24px/1.2 var(--sans); letter-spacing: -.02em; }
.pat-n { color: var(--ink-3); font-weight: 500; }
.pat-sub { color: var(--ink-3); font-size: 14.5px; }
.pat > summary .i-chev { margin-left: auto; width: 20px; height: 20px; }
.pat-note { margin-top: 16px; color: var(--ink-3); font-size: 14px; }
.pat-h { margin-top: 28px; padding-bottom: 8px; border-bottom: 1px solid var(--line); font: 600 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.empty { padding: 36px 0; color: var(--ink-3); }

/* ---------- Dissertation page ---------- */
.wrap-narrow { max-width: calc(960px + 2 * var(--gut)); }
.diss .page-head { padding-bottom: 8px; }
.diss .eyebrow a { color: inherit; text-decoration-color: var(--line-strong); }
.diss-title { margin-top: 14px; font: 650 clamp(30px, 3.6vw, 44px)/1.12 var(--sans); letter-spacing: -.025em; max-width: 30ch; }
.diss-meta { margin-top: 18px; max-width: 76ch; color: var(--ink-3); font-size: 15.5px; }
.diss-meta a { color: var(--ink-2); text-decoration-color: var(--line-strong); }
.diss .actions { margin-top: 24px; }
.diss .award { margin-top: 32px; }
.dsec { padding: 52px 0 0; }
.dsec h2 { padding-bottom: 14px; margin-bottom: 20px; border-bottom: 1px solid var(--line); font: 650 24px/1.2 var(--sans); letter-spacing: -.02em; }
.summary { max-width: 68ch; font-size: 18px; line-height: 1.7; color: var(--ink-2); }
.toc { list-style: none; }
.part { padding: 22px 0; border-top: 1px solid var(--line); }
.part:first-child { padding-top: 4px; border-top: 0; }
.part-h { display: flex; align-items: baseline; gap: 0; font: 600 21px/1.3 var(--sans); letter-spacing: -.01em; }
.roman { display: inline-block; width: 56px; flex: none; font: 600 15px/1 var(--mono); color: var(--accent); }
.part-q { margin: 6px 0 0 56px; max-width: 64ch; color: var(--ink-3); }
.chs { list-style: none; margin: 12px 0 0 56px; }
.chs a {
  display: flex; align-items: baseline; gap: 12px; margin: 0 -10px; padding: 9px 10px; border-radius: 8px;
  color: var(--ink); text-decoration: none;
}
.chs a:hover { background: var(--chip); }
.chs a:hover .t { color: var(--accent); }
.chs .ch { flex: none; width: 48px; font: 500 13px/1 var(--mono); color: var(--ink-3); }
.chs .t { flex: 0 1 auto; min-width: 0; font-weight: 500; }
.chs .lead { flex: 1 1 32px; min-width: 24px; border-bottom: 2px dotted var(--line-strong); transform: translateY(-4px); }
.chs .v { flex: none; font: 500 13px/1 var(--mono); color: var(--ink-2); white-space: nowrap; }
.toc-note { margin-top: 8px; color: var(--ink-3); font-size: 14px; }
.readlink { font-size: 18px; font-weight: 600; text-decoration: none; }
.readlink .i { margin-left: 6px; }
.readlink:hover { text-decoration: underline; }
.handle { margin-top: 6px; font: 500 13px/1.5 var(--mono); color: var(--ink-3); }
.bib-open { margin-top: 0; }
.press { list-style: none; display: grid; gap: 10px; padding-bottom: 80px; }
.press a { font-weight: 500; }

/* ---------- 404 ---------- */
.nf { padding: 80px 0 120px; }
.lost { width: 320px; max-width: 100%; height: auto; margin-bottom: 28px; overflow: visible; }
.lost-path { fill: none; stroke: var(--line-strong); stroke-width: 1.5; stroke-dasharray: 4 5; }
.lost-fix circle { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1.5; }
.lost-q { fill: var(--surface); stroke: var(--line-strong); stroke-width: 1.5; stroke-dasharray: 3 3; }
.lost-n text { font: 600 13px var(--mono); fill: var(--accent); text-anchor: middle; }
.lost-n text:last-child { fill: var(--ink-3); }
.nf h1 { margin-top: 10px; font: 650 clamp(36px, 5vw, 56px)/1.05 var(--sans); letter-spacing: -.03em; }
.nf-text { margin-top: 14px; max-width: 56ch; color: var(--ink-2); font-size: 17px; }

/* ---------- Motion ---------- */
.i-chev { transition: transform .15s ease; }
/* ---- Homepage: slim award bar, research cards, compact experience and honors ---- */
.award-slim { margin-top: 32px; padding: 12px 18px; }
.award-slim .medal { width: 36px; height: 36px; border-radius: 10px; }
.award-slim .award-title { font-size: 15.5px; }
.lede { max-width: 72ch; margin: -12px 0 28px; color: var(--ink-2); font-size: 16.5px; line-height: 1.6; }
.card .card-k { font: 600 11.5px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.card-links { position: relative; z-index: 2; margin-top: auto; padding-top: 6px; }
.tl-role { font-weight: 400; color: var(--ink-2); }
.hlist-home { max-width: 920px; }
.svc-line { max-width: 920px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--ink-2); font-size: 15px; }
.svc-line b { color: var(--ink); font-weight: 600; }
/* ---- Publications: thread groups, one action row per entry ---- */
.grp-h { padding-bottom: 10px; border-bottom: 1px solid var(--line-strong); font: 650 20px/1.25 var(--sans); letter-spacing: -.01em; color: var(--ink); }
.grp-h .g-yrs { margin-left: 8px; font: 500 13px/1 var(--mono); letter-spacing: 0; color: var(--ink-3); }
.acts { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 6px; margin-top: 12px; }
.acts .links, .acts .bib { margin-top: 0; }
.acts .bib[open] { flex-basis: 100%; }
/* ---- Dissertation page ---- */
.diss-fig { margin-top: 28px; overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: var(--plate); }
.diss-fig img { display: block; width: 100%; height: auto; }
.diss-fig figcaption { padding: 10px 14px; border-top: 1px solid var(--line); background: var(--surface); color: var(--ink-3); font-size: 13.5px; }
.toc-lead { margin: -6px 0 14px; color: var(--ink-3); font-size: 14.5px; }
.diss .dsec:last-child { padding-bottom: 80px; }
/* ---- Dark mode: dim white figure plates and the portrait slightly so they don't glare ---- */
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) :is(.plate, .portrait img, .diss-fig img) { filter: brightness(.85); } }
:root[data-theme="dark"] :is(.plate, .portrait img, .diss-fig img) { filter: brightness(.85); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .card:hover { transform: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1023px) {
  .entry { grid-template-columns: 128px minmax(0, 1fr); gap: 24px; }
  .hl { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid { grid-template-columns: minmax(0, 1fr) 220px; column-gap: 48px; }
  .pillars { grid-template-columns: minmax(0, 1fr); grid-template-rows: none; gap: 16px; }
  .pillar { grid-row: auto; grid-template-rows: none; }
  .two { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .split { grid-template-columns: minmax(0, 1fr); }
  .tl > li { grid-template-columns: 150px 30px minmax(0, 1fr); column-gap: 20px; }
}
@media (max-width: 879px) {
  .nav { display: none; }
  .menu { display: block; }
}
@media (max-width: 719px) {
  :root { --gut: 16px; --bar: 56px; }
  .section { padding: 56px 0; }
  .shead { margin-bottom: 24px; }
  .shead h2, .label-h { font-size: 24px; }
  .fixdot { width: 28px; height: 28px; font-size: 12px; }
  .hero { padding: 24px 0 48px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr) 88px; grid-template-areas: "id portrait" "body body"; column-gap: 16px; }
  .portrait { padding-top: 2px; }
  .portrait img { border-radius: 14px; }
  .hero .eyebrow { font-size: 11.5px; }
  .hero h1 { margin-top: 10px; font-size: 40px; }
  .deck { margin-top: 18px; font-size: 18px; max-width: none; }
  .meta { margin-top: 14px; font-size: 14.5px; }
  .actions { margin-top: 20px; }
  .btn { min-height: 38px; padding: 7px 13px; font-size: 14px; }
  .award { grid-template-columns: auto minmax(0, 1fr); align-items: start; margin-top: 28px; padding: 16px; gap: 10px 14px; }
  .actions .grp + .grp { gap: 6px; }
  .actions .grp + .grp .btn { min-height: 34px; padding: 6px 11px; font-size: 13px; }
  .tl .loc { display: block; }
  .tl .sep { display: none; }
  .pubtools .seg { display: flex; width: 100%; }
  .pubtools .seg button { flex: 1 1 auto; justify-content: center; padding: 0 8px; font-size: 13px; }
  .award-link, .award-links { grid-column: 2; }
  .medal { width: 40px; height: 40px; }
  .prose p { font-size: 16px; }
  .pub { grid-template-columns: minmax(0, 1fr); gap: 14px; padding: 22px 0; }
  .tl > li { grid-template-columns: 30px minmax(0, 1fr); column-gap: 14px; }
  .tl-date { grid-column: 2; grid-row: 1; padding-top: 0; text-align: left; }
  .tl-node { grid-column: 1; grid-row: 1 / span 2; }
  .tl-body { grid-column: 2; }
  .tl-node::before { bottom: -36px; }
  .news li, .hlist li { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .conf { grid-template-columns: minmax(0, 1fr); }
  .ne > div { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .ne { padding: 18px; }
  .foot-row { flex-direction: column; align-items: flex-start; }
  .page-head { padding-top: 36px; }
  .filters { padding: 14px; }
  .flabel { width: 100%; }
  .fgroup-last .count { margin-left: 0; width: 100%; }
  .entry { grid-template-columns: minmax(0, 1fr); gap: 2px; padding: 18px 0; }
  .thumb { display: none; }
  .diss-title { text-wrap: pretty; }
  .part-q, .chs { margin-left: 0; }
  .roman { width: 44px; }
  .chs a { flex-wrap: wrap; row-gap: 4px; }
  .chs .t { flex-basis: calc(100% - 60px); }
  .chs .lead { display: none; }
  .chs .v { margin-left: 60px; }
}
@media (max-width: 559px) {
  .c-row { grid-template-columns: minmax(0, 1fr); gap: 6px; padding: 14px 0; }
  .c-links { gap: 4px 18px; }
  .hl { grid-template-columns: minmax(0, 1fr); }
  .bar-actions { gap: 6px; }
  .brand { gap: 8px; font-size: 15.5px; }
}

/* ---------- Print ---------- */
@media print {
  :root:not(#print), :root[data-theme]:not(#print) {
    --bg: #FFFFFF; --surface: #FFFFFF; --ink: #000000; --ink-2: #1F2430; --ink-3: #454C5A;
    --line: #CDD2DA; --line-strong: #8A93A3; --accent: #1A3BB8; --accent-line: #1A3BB8; --accent-soft: #FFFFFF;
    --fix: #C2410C; --fix-ink: #9A3412; --fix-soft: #FFFFFF; --chip: #F1F3F6; --plate: #FFFFFF;
    --shadow: none; --shadow-sm: none; color-scheme: light;
  }
  @page { margin: 12mm 12mm; }
  html { scroll-padding-top: 0; }
  body { font-size: 9pt; line-height: 1.38; background: #FFFFFF; }
  .skip, .bar, .actions, .award-link, .more, .pubtools, .filters, .copy, .theme-pick, .visitor-map, .fixdot, .pnum, .medal,
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  .page-head h1, .diss-title { font-size: 20pt; }
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}