@import url("https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&family=Geist+Mono:wght@400;500;600&family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@400;500;600;700&display=swap");

:root { --bg: #f7f3f0; --fg: #171717; --strong: #0a0a0a; --secondary: #303030; --muted: #737373; --line: rgba(0,0,0,.11); --button: #f1ece8; }
html.dark { --bg: #1a1a1a; --fg: #c2c2c2; --strong: #f5f5f5; --secondary: #c0c0c0; --muted: #969696; --line: rgba(255,255,255,.11); --button: #232323; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: "Geist", Arial, sans-serif; line-height: 1.7; transition: background-color .25s ease, color .25s ease; }
a { color: inherit; text-decoration: underline; text-decoration-color: var(--muted); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover, a:focus-visible { color: var(--strong); text-decoration-color: var(--strong); }
button { font: inherit; }
.site-header { display: flex; align-items: center; justify-content: space-between; padding: 2rem max(1.25rem, calc((100vw - 70rem) / 2)); }
.site-wordmark { color: var(--strong); font: 600 11px/1 "JetBrains Mono", monospace; letter-spacing: .16em; text-decoration: none; text-transform: uppercase; }
.site-wordmark span { display: inline-block; animation: flicker 2.8s ease-in-out infinite; }
.site-wordmark span:nth-child(2n) { animation-delay: .35s; } .site-wordmark span:nth-child(3n) { animation-delay: .7s; }
@keyframes flicker { 0%,100% { opacity: .86; transform: translateY(0); } 48% { opacity: .58; transform: translateY(.5px); } 52% { opacity: 1; transform: translateY(-.5px); } }
.header-actions { display: flex; align-items: center; gap: 1rem; font: 10px "JetBrains Mono", monospace; letter-spacing: .08em; text-transform: uppercase; }
.header-link { color: var(--muted); text-decoration: none; }
.theme-toggle { display: grid; width: 2.5rem; height: 2.5rem; place-items: center; border: 0; border-radius: 0; padding: 0; background: transparent; color: var(--muted); font-size: 1.2rem; line-height: 1; cursor: pointer; transition: color .15s ease, transform .15s ease; }
.theme-toggle:hover { color: var(--strong); transform: scale(1.08); }
.theme-toggle:focus-visible { outline: 1px solid var(--strong); outline-offset: 4px; }
.profile { width: min(calc(100% - 2.5rem), 42rem); margin: 0 auto; padding: 3rem 0 6rem; }
.page { width: min(calc(100% - 2.5rem), 42rem); margin: 0 auto; padding: 4rem 0 5rem; }
.page-shell { width: 100%; }
.page-shell > h1 { margin: 0 0 1.5rem; color: var(--strong); font: 600 1.2rem/1.35 "JetBrains Mono", monospace; letter-spacing: -.02em; }
.writing-page { padding-top: 4rem; }
.writing-post-shell { max-width: 42rem; }
.writing-content { color: var(--secondary); font-family: "Geist", Arial, sans-serif; font-size: .95rem; line-height: 1.7; }
.writing-content > h1 { margin: 0 0 .8rem; color: var(--strong); font: 600 clamp(2rem, 5vw, 3rem)/1.2 "JetBrains Mono", monospace; letter-spacing: -.04em; }
.writing-post-date { display: block; margin: 0 0 2.5rem; color: var(--muted); font: .7rem/1.5 "JetBrains Mono", monospace; letter-spacing: .04em; }
.writing-list { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.writing-list li { border-bottom: 1px solid var(--line); }
.writing-content h2 { margin: 3rem 0 1rem; color: var(--strong); font: 600 1.18rem/1.35 "JetBrains Mono", monospace; }
.writing-content h3 { margin: 2rem 0 .75rem; color: var(--strong); font: 600 1rem/1.35 "JetBrains Mono", monospace; }
.writing-content p { margin: 0 0 1.1rem; }
.writing-content ul, .writing-content ol { margin: 0 0 1.25rem 1.25rem; }
.writing-content li { margin: .35rem 0; }
.writing-content a { color: #2563eb; text-decoration: underline; text-decoration-color: currentColor; text-underline-offset: 3px; }
html.dark .writing-content a { color: #8ab4ff; }
.writing-content strong { color: var(--strong); font-weight: 600; }
.writing-content pre { margin: 1.25rem 0; padding: 1rem 1.1rem; overflow-x: auto; border: 1px solid var(--line); background: color-mix(in srgb, var(--fg) 5%, var(--bg)); color: var(--secondary); font: .78rem/1.65 "JetBrains Mono", monospace; }
.writing-content code { font-family: "JetBrains Mono", monospace; font-size: .9em; }
.writing-content .katex { color: inherit; }
.page-links { display: flex; gap: 1.25rem; margin-top: 2.5rem; }
.page-links a { color: var(--muted); font: 10px/1.4 "JetBrains Mono", monospace; letter-spacing: .18em; text-decoration: none; text-transform: uppercase; }
.page-links a:hover { color: var(--strong); }
.intro-block { padding-bottom: 1.5rem; }
.eyebrow { margin: 0 0 1rem; color: var(--muted); font: 10px "JetBrains Mono", monospace; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3, summary, .quick-links, time, .section-link, .site-footer { font-family: "JetBrains Mono", monospace; }
h1 { margin: 0; color: var(--strong); font-size: clamp(2.1rem, 6vw, 3.4rem); line-height: 1.15; letter-spacing: -.04em; }
.hero-name { display: inline-block; white-space: pre; cursor: pointer; transition: color .2s ease, text-shadow .2s ease; }
.hero-name:active { color: #8ab4ff; }
.hero-name.is-morphing { text-shadow: .035em 0 rgba(138,180,255,.6), -.035em 0 rgba(255,120,120,.35); animation: nameGlitch .18s steps(2, end) infinite; }
.hero-name.is-chinese { color: #8ab4ff; }
@keyframes nameGlitch { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(.02em); } }
@media (prefers-reduced-motion: reduce) { .hero-name.is-morphing { animation: none; } }
.role { margin: .65rem 0 1.5rem; color: var(--muted); font-size: 1.05rem; }
.quick-links { display: flex; flex-wrap: wrap; gap: .55rem; }
.quick-links a { display: inline-flex; align-items: center; gap: .38rem; padding: .32rem .62rem; border: 1px solid var(--line); background: var(--button); color: var(--secondary); font-size: 10px; text-decoration: none; }
.quick-links a:hover, .quick-links a:focus-visible { border-color: var(--muted); color: var(--strong); }
.quick-icon { width: .88rem; height: .88rem; flex: 0 0 auto; fill: currentColor; }
.fold { overflow: hidden; }
summary { padding: .9rem 0; color: var(--strong); cursor: pointer; font-size: 13px; font-weight: 600; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::before { content: "+"; display: inline-block; width: 1.5rem; color: var(--muted); } details[open] summary::before { content: "−"; } summary span { color: var(--muted); font-size: 10px; font-weight: 400; }
.fold-content { padding: 0 0 1.5rem 1.5rem; color: var(--secondary); }
.fold-content p { margin: 0 0 .9rem; }
.fold-content p:last-child { margin-bottom: 0; }
.honors-panel { padding: 0 0 1.5rem 1.5rem; color: var(--secondary); }
.honors-group + .honors-group { margin-top: 2rem; }
.honors-group h3 { margin: 0 0 .8rem; color: var(--secondary); font: 600 13px/1.55 "JetBrains Mono", monospace; }
.honors-list { margin: 0; padding-left: 1.1rem; }
.honors-list > li { margin: .7rem 0; color: var(--secondary); font-size: 13px; line-height: 1.7; }
.honors-list > li:first-child { margin-top: 0; }
.honors-list > li:last-child { margin-bottom: 0; }
.honors-list strong { color: var(--strong); font-weight: 600; }
.honors-list ul { margin: .15rem 0 0; padding-left: 1.1rem; }
.honors-list ul li { margin: .1rem 0; }
.content-section { padding: 2.5rem 0 0; }
.content-section h2 { margin: 0 0 1.25rem; color: var(--strong); font-size: 1.2rem; letter-spacing: -.02em; }
.content-section > p { margin: 0 0 1rem; color: var(--secondary); }
.section-heading-row { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; }
.section-heading-row h2 { margin: 0; }
.section-link { flex: 0 0 auto; color: var(--muted); font: 10px/1.4 "JetBrains Mono", monospace; text-decoration: none; letter-spacing: .06em; text-transform: uppercase; }
.section-link:hover, .section-link:focus-visible { color: var(--strong); }
.about { text-align: justify; }
.about p { margin: 0 0 1rem; color: var(--secondary); font-size: .95rem; line-height: 1.7; }
.about a { color: var(--strong); }
.about-section h2 { margin-bottom: 1.5rem; font: 600 1.2rem/1.35 "JetBrains Mono", monospace; letter-spacing: -.02em; }
.workplaces { margin: 1.15rem 0 0; color: var(--secondary); font-size: .95rem; line-height: 1.8; }
.workplaces a { display: inline-flex; align-items: center; gap: .35rem; color: var(--muted); white-space: nowrap; }
.workplaces a:hover { color: var(--strong); }
.workplaces img { width: 1em; height: 1em; object-fit: contain; vertical-align: middle; }
.logo-sjtu { filter: brightness(0) saturate(100%); }
html.dark .logo-sjtu, html.dark .logo-eleutherai, html.dark .logo-metacreation { filter: none; }
.timeline { display: flow-root; margin: 0 0 0 .35rem; font-family: "Geist", Arial, sans-serif; }
.timeline-panel { padding-bottom: 1.5rem; }
.timeline-item { position: relative; display: grid; grid-template-columns: 8.75rem minmax(0, 1fr); gap: 1.5rem; padding: 0 0 2rem 1.5rem; border-left: 1px solid var(--line); }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before { content: ""; position: absolute; top: .45rem; left: -4px; width: 7px; height: 7px; border-radius: 50%; background: var(--strong); box-shadow: 0 0 0 3px var(--bg); }
.timeline-date { color: var(--muted); font: 500 10px/1.5 "JetBrains Mono", monospace; letter-spacing: .04em; white-space: nowrap; }
.timeline-entry { min-width: 0; }
.timeline-entry h3, .work-item h3 { margin: 0; color: var(--strong); font-size: 13px; line-height: 1.55; }
.timeline-entry ul { margin: .55rem 0 0; padding-left: 1.1rem; }
.timeline-entry li, .work-item p { margin: .25rem 0; color: var(--secondary); font-size: 13px; line-height: 1.7; }
.timeline-entry a { color: #2563eb; }
html.dark .timeline-entry a { color: #8ab4ff; }
.timeline-post-link { display: inline-block; margin-top: .75rem; font-size: .84rem; }
.timeline-gallery { width: 100%; max-width: 100%; margin-top: 1rem; }
.timeline-gallery-track { display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 2.25rem) / 4); gap: .75rem; width: 100%; max-width: 100%; overflow-x: auto; overscroll-behavior-x: contain; scrollbar-width: none; scroll-snap-type: x mandatory; scroll-behavior: smooth; touch-action: pan-x; }
.timeline-gallery-track.is-auto-scrolling { scroll-snap-type: none; scroll-behavior: auto; }
.timeline-gallery-track::-webkit-scrollbar { display: none; }
.timeline-gallery-track:focus-visible { outline: 1px solid var(--strong); outline-offset: 4px; }
.timeline-gallery-item { display: block; position: relative; min-width: 0; width: 100%; aspect-ratio: 4 / 3; padding: 0; overflow: hidden; border: 1px solid var(--line); background: var(--button); cursor: zoom-in; scroll-snap-align: start; transition: transform .18s ease, border-color .18s ease; }
.timeline-gallery-item img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.timeline-gallery-item:hover { transform: translateY(-2px); border-color: var(--muted); }
.timeline-gallery-item:hover img { transform: scale(1.04); }
.timeline-gallery-controls { display: grid; grid-template-columns: 2.75rem 1fr 2.75rem; align-items: center; gap: .75rem; margin-top: .6rem; }
.timeline-gallery-control { display: inline-grid; width: 2.75rem; height: 2.25rem; place-items: center; padding: 0; border: 1px solid var(--line); background: transparent; color: var(--muted); font: 1rem/1 "JetBrains Mono", monospace; cursor: pointer; transition: color .15s ease, border-color .15s ease, background-color .15s ease; }
.timeline-gallery-control:hover, .timeline-gallery-control:focus-visible { color: var(--strong); border-color: var(--muted); background: color-mix(in srgb, var(--fg) 6%, transparent); }
.timeline-gallery-control:focus-visible { outline: 1px solid var(--strong); outline-offset: 3px; }
.timeline-gallery-position { min-width: 4.5rem; color: var(--muted); font: .68rem/1 "JetBrains Mono", monospace; letter-spacing: .04em; text-align: center; font-variant-numeric: tabular-nums; }
.research-section { padding-top: 2.5rem; }
.research-board { padding: clamp(1.25rem, 4vw, 3rem); border: 1px solid var(--line); background: color-mix(in srgb, var(--strong) 3%, var(--bg)); }
.research-board-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
.research-eyebrow { margin: 0 0 .55rem; color: var(--muted); font: .62rem/1.4 "JetBrains Mono", monospace; letter-spacing: .16em; text-transform: uppercase; }
.research-title { margin: 0; color: var(--strong); font: 600 1.2rem/1.35 "JetBrains Mono", monospace; letter-spacing: -.02em; }
.research-board-note { padding-bottom: .15rem; color: var(--muted); font: .66rem/1.5 "JetBrains Mono", monospace; letter-spacing: .04em; }
.research-toolbar { display: flex; justify-content: flex-start; margin: 1rem 0 2rem; }
.research-filters { display: inline-flex; flex-wrap: wrap; gap: .3rem; }
.research-filter { border: 1px solid var(--line); background: transparent; color: var(--muted); font: .68rem "JetBrains Mono", monospace; letter-spacing: .04em; padding: .45rem .7rem; cursor: pointer; transition: color .15s ease, border-color .15s ease, background-color .15s ease; }
.research-filter:hover, .research-filter:focus-visible, .research-filter.is-active { color: var(--strong); border-color: var(--line); }
.research-filter.is-active { background: color-mix(in srgb, var(--fg) 7%, transparent); }
.research-filter:focus-visible { outline: 1px solid var(--strong); outline-offset: .15rem; }
.research-group[hidden] { display: none; }
.research-group { margin-top: 2.25rem; }
.research-group h2 { margin: 0 0 .8rem; color: var(--muted); font: 500 .66rem/1.5 "JetBrains Mono", monospace; letter-spacing: .12em; text-transform: uppercase; }
.paper-list { margin: 0 0 1.5rem; padding: 0; list-style: none; }
.paper-row { display: flex; justify-content: space-between; gap: 1.5rem; padding: 1rem 1.1rem; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 72%, transparent); font-family: "Geist", Arial, sans-serif; }
.paper-list li:first-child .paper-row { border-top: 1px solid var(--line); }
.paper-info { min-width: 0; flex: 1; font-size: .95rem; line-height: 1.5; }
.paper-info strong { display: block; font-size: 1rem; line-height: 1.4; font-weight: 600; color: var(--strong); }
.paper-info em { display: block; margin-top: .3rem; color: var(--muted); font-size: .76rem; line-height: 1.5; font-style: normal; }
.coauthors { display: block; margin-top: .15rem; color: var(--muted); font-size: .76rem; }
.project-description { display: block; margin-top: .3rem; color: var(--muted); font-size: .78rem; line-height: 1.55; }
.paper-date { flex-shrink: 0; align-self: flex-start; padding: .28rem .45rem; border: 1px solid var(--line); color: var(--muted); font: .62rem/1.2 "JetBrains Mono", monospace; letter-spacing: .04em; text-transform: uppercase; white-space: nowrap; }
.paper-extra { margin-top: .5rem; color: var(--muted); font: .72rem/1.5 "Geist", Arial, sans-serif; }
.paper-extra summary { display: inline-flex; align-items: center; gap: .35rem; color: var(--muted); font: .62rem/1.5 "JetBrains Mono", monospace; cursor: pointer; list-style: none; }
.paper-extra summary::-webkit-details-marker { display: none; }
.paper-extra summary::before { content: "+"; color: var(--muted); }
.paper-extra[open] summary::before { content: "−"; }
.paper-extra .coauthors, .paper-extra .project-description { margin-top: .45rem; }
.paper-links { display: block; margin: .45rem 0 .3rem; }
.paper-links a { margin-right: .5rem; color: #2563eb; font-size: .82rem; }
html.dark .paper-links a { color: #8ab4ff; }
.show-more { display: inline-flex; align-items: center; min-height: 2.75rem; margin-top: 1rem; padding: .5rem .75rem; border: 1px solid var(--line); background: transparent; color: var(--muted); font: .68rem "JetBrains Mono", monospace; cursor: pointer; }
.show-more:hover, .show-more:focus-visible { border-color: var(--muted); color: var(--strong); }
.show-more:focus-visible { outline: 1px solid var(--strong); outline-offset: 4px; }
.writing-list { border-top: 1px solid var(--line); }
.writing-list a { text-decoration: none; }
.writing-list > a { border-bottom: 1px solid var(--line); }
.writing-section-link { display: grid; grid-template-columns: minmax(0, 1fr) max-content; align-items: center; gap: 1.25rem; padding: 1rem 0; color: inherit; transition: padding .2s ease, color .2s ease; }
.writing-section-link:hover, .writing-section-link:focus-visible { padding-inline: .45rem; color: var(--strong); }
.writing-section-link:focus-visible { outline: 1px solid var(--strong); outline-offset: -1px; }
.writing-section-title { display: block; color: var(--strong); font: 600 .98rem/1.5 "Geist", Arial, sans-serif; }
.writing-section-description { display: block; max-width: 52ch; margin-top: .35rem; color: var(--muted); font-size: .82rem; line-height: 1.6; }
.writing-section-side { display: flex; flex-direction: column; align-items: flex-end; gap: .45rem; }
.writing-date { color: var(--muted); font: .7rem/1.5 "JetBrains Mono", monospace; letter-spacing: .04em; white-space: nowrap; }
.writing-section-arrow { color: var(--muted); font-size: 1rem; transition: transform .2s ease, color .2s ease; }
.writing-section-link:hover .writing-section-arrow, .writing-section-link:focus-visible .writing-section-arrow { color: var(--strong); transform: translate(2px, -2px); }
.site-footer { display: flex; justify-content: space-between; gap: 1rem; width: min(calc(100% - 2.5rem), 42rem); margin: 0 auto; padding: 1.5rem 0 3rem; border-top: 1px solid var(--line); color: var(--muted); font-family: "Geist Mono", monospace; font-size: .7rem; letter-spacing: .04em; }
.site-footer a { text-decoration: none; }
body.lightbox-open { overflow: hidden; }
.gallery-lightbox[hidden] { display: none; }
.gallery-lightbox { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; overflow: auto; padding: 3.5rem 2rem 2rem; background: rgba(0,0,0,.82); overscroll-behavior: contain; opacity: 0; pointer-events: none; transition: opacity .22s ease; }
.gallery-lightbox.is-open { opacity: 1; pointer-events: auto; }
.gallery-lightbox-image { width: min(90vw, 54rem); max-height: calc(100dvh - 5rem); overflow: hidden; border: 1px solid rgba(255,255,255,.2); background: #000; transform: translateY(.75rem) scale(.985); transition: transform .22s ease; }
.gallery-lightbox.is-open .gallery-lightbox-image { transform: translateY(0) scale(1); }
.gallery-lightbox-image img { display: block; width: 100%; max-height: calc(100dvh - 5rem); object-fit: contain; }
.lightbox-close { position: fixed; top: max(1rem, env(safe-area-inset-top)); right: max(1.25rem, env(safe-area-inset-right)); z-index: 1; display: grid; width: 3.5rem; height: 3.5rem; place-items: center; border: 0; border-radius: 0; padding: 0; background: transparent; color: #fff; font: 2.5rem/1 "JetBrains Mono", monospace; cursor: pointer; transition: color .15s ease, transform .15s ease; }
.lightbox-close:hover { color: rgba(255,255,255,.7); transform: scale(1.08); }
.lightbox-close:focus-visible { outline: 1px solid #fff; outline-offset: 4px; }
@media (max-width: 600px) {
  .site-header { padding: 1.75rem 1.25rem; }
  .header-link { display: none; }
  .profile { width: min(calc(100% - 2.5rem), 42rem); padding-top: 3rem; }
  .timeline { margin-top: 1.25rem; margin-left: .15rem; }
  .timeline-item { grid-template-columns: 1fr; gap: .2rem; padding-left: 1.15rem; padding-bottom: 1.6rem; }
  .timeline-gallery { max-width: 19.75rem; }
  .timeline-gallery-track { grid-auto-columns: calc((100% - .75rem) / 2); }
  .timeline-gallery-controls { margin-top: .7rem; }
  .timeline-gallery-control { width: 3rem; height: 2.75rem; }
  .gallery-lightbox { padding: calc(env(safe-area-inset-top) + 4rem) calc(env(safe-area-inset-right) + 1rem) calc(env(safe-area-inset-bottom) + 1rem) calc(env(safe-area-inset-left) + 1rem); }
  .gallery-lightbox-image { width: 100%; max-height: calc(100dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 5rem); }
  .gallery-lightbox-image img { max-width: 100%; max-height: calc(100dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 5rem); }
  .lightbox-close { top: max(.75rem, env(safe-area-inset-top)); right: max(.75rem, env(safe-area-inset-right)); width: 4rem; height: 4rem; font-size: 2.8rem; }
  .research-board { padding: 1.1rem; }
  .research-board-header { align-items: flex-start; padding-bottom: 1rem; }
  .research-board-note { display: none; }
  .research-toolbar { justify-content: flex-start; margin: 1rem 0 1.5rem; }
  .research-filters { display: grid; width: 100%; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .3rem; }
  .research-filter { display: flex; align-items: center; justify-content: center; min-height: 2.35rem; padding: .3rem .25rem; text-align: center; font-size: .58rem; line-height: 1.2; }
  .research-group { margin-top: 1.75rem; }
  .paper-row { flex-direction: column; gap: .6rem; padding: .85rem .75rem; }
  .paper-date { order: -1; }
  .paper-info strong { font-size: .98rem; line-height: 1.45; }
  .paper-info em, .project-description { font-size: .8rem; line-height: 1.55; }
  .writing-section-link { gap: .85rem; }
  .writing-section-description { font-size: .78rem; }
  .site-footer { display: block; }
  .site-footer span { display: block; margin-top: .5rem; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; scroll-behavior: auto !important; transition: none !important; } }

/* Geist / editorial portfolio refresh */
body { font-family: "Geist", Arial, sans-serif; }
.site-header { position: relative; width: min(calc(100% - 2.5rem), 42rem); margin: 0 auto; padding: 1.25rem 0; gap: 1rem; }
.site-wordmark { display: inline-block; flex: 0 0 auto; font: 600 .68rem/1 "Geist Mono", monospace; letter-spacing: .12em; }
.main-nav { display: flex; align-items: center; justify-content: center; gap: clamp(.65rem, 2.2vw, 1.5rem); margin: 0 auto; }
.main-nav a { color: var(--muted); font: 400 .84rem/1.3 "Geist", Arial, sans-serif; text-decoration: none; white-space: nowrap; transition: color .18s ease; }
.main-nav a:hover, .main-nav a:focus-visible, .main-nav a[aria-current="page"] { color: var(--strong); }
.main-nav a:focus-visible { outline: 1px solid var(--strong); outline-offset: 4px; }
.section-link { font: 400 .78rem/1.4 "Geist", Arial, sans-serif; letter-spacing: 0; text-transform: none; }
.header-actions { flex: 0 0 auto; margin-left: 0; }
.theme-toggle { width: 2rem; height: 2rem; font-family: "Geist", Arial, sans-serif; }
.profile { width: min(calc(100% - 2.5rem), 42rem); padding-top: 2.1rem; }
.page { width: min(calc(100% - 2.5rem), 42rem); padding-top: 2.5rem; }
.page-shell > h1, .directory-page h1 { margin-bottom: .45rem; color: var(--strong); font: italic 400 clamp(2rem, 5vw, 2.6rem)/1.1 "Instrument Serif", Georgia, serif; letter-spacing: -.025em; }
.directory-page { width: min(calc(100% - 2.5rem), 42rem); min-height: 60vh; margin: 0 auto; padding: 2.5rem 0 4rem; }
.directory-page .eyebrow { margin-bottom: .45rem; font: 500 .68rem/1.4 "Geist Mono", monospace; letter-spacing: .08em; text-transform: uppercase; }
.page-intro { max-width: 54ch; margin: .65rem 0 2rem; color: var(--muted); font: 400 .92rem/1.6 "Geist", Arial, sans-serif; }
.directory-group { margin-top: 2.5rem; }
.directory-group h2 { margin: 0 0 .65rem; color: var(--strong); font: italic 400 1.5rem/1.2 "Instrument Serif", Georgia, serif; }
.page-shell > h1 { font-size: 2rem; }
.intro-block { padding-bottom: 1.5rem; }
h1, h2, h3, summary, .quick-links, time, .section-link, .site-footer { font-family: "Geist", Arial, sans-serif; }
h1 { font-weight: 500; }
.eyebrow, .timeline-date, .writing-date, .writing-post-date { font-family: "Geist Mono", monospace; }
.writing-content { font-family: "Geist", Arial, sans-serif; font-size: .96rem; line-height: 1.75; }
.writing-content > h1 { font: 500 clamp(2.1rem, 5vw, 3.1rem)/1.12 "Geist", Arial, sans-serif; letter-spacing: -.045em; }
.writing-content h2, .writing-content h3 { font-family: "Geist", Arial, sans-serif; }
.about { text-align: left; }
.about p { font-size: .88rem; line-height: 1.7; }
.workplaces { font-size: .88rem; }
.workplaces img { width: 1.15em; height: 1.15em; vertical-align: -0.15em; }
.about-section h2, .section-heading-row h2, .content-section > h2 { color: var(--strong); font: italic 400 1.5rem/1.2 "Instrument Serif", Georgia, serif; letter-spacing: 0; }
.honors-group h3 { font-family: "Geist", Arial, sans-serif; }
.timeline { font-family: "Geist", Arial, sans-serif; }
.timeline-entry h3 { font: 500 .96rem/1.45 "Geist", Arial, sans-serif; }
.timeline-entry li { font: 400 .88rem/1.65 "Geist", Arial, sans-serif; }
.research-section { padding-top: 2.5rem; }
.research-board { padding: 0; border: 0; background: transparent; }
.research-board-header { align-items: baseline; padding: 0; border: 0; }
.research-title { margin: 0; color: var(--strong); font: italic 400 1.55rem/1.2 "Instrument Serif", Georgia, serif; letter-spacing: 0; }
.research-eyebrow, .research-board-note, .research-toolbar, .research-group, .paper-extra, .show-more { display: none; }
.featured-papers { margin: 1rem 0 0; }
.paper-list { margin: 0; padding: 0; border-top: 0; list-style: none; }
.paper-list li { border-bottom: 1px solid var(--line); }
.paper-row { display: flex; align-items: flex-start; gap: 1.5rem; padding: 1.05rem 0; border: 0; background: transparent; font-family: "Geist", Arial, sans-serif; transition: opacity .2s ease, color .2s ease; }
.paper-info { min-width: 0; flex: 1 1 auto; font: 400 .92rem/1.55 "Geist", Arial, sans-serif; }
.paper-info strong { display: block; color: var(--strong); font: 500 1rem/1.4 "Geist", Arial, sans-serif; }
.paper-date { display: block; margin: 0 0 .42rem; padding: 0; border: 0; color: var(--muted); font: 500 .64rem/1.3 "Geist Mono", monospace; letter-spacing: .04em; text-transform: uppercase; }
.paper-info em, .project-description, .coauthors { display: block; margin-top: .32rem; color: var(--muted); font: 400 .84rem/1.55 "Geist", Arial, sans-serif; }
.paper-links { display: flex; flex: 0 0 auto; align-items: center; gap: .9rem; margin: .15rem 0 0; white-space: nowrap; }
.paper-links a { color: var(--muted); font: 400 .76rem/1.4 "Geist", Arial, sans-serif; text-decoration: none; }
.paper-links a::after { content: " ↗︎"; }
.paper-links a:hover, .paper-links a:focus-visible { color: var(--strong); }
.writing-list { font-family: "Geist", Arial, sans-serif; }
.writing-section-title { font: 500 .98rem/1.45 "Geist", Arial, sans-serif; }
.writing-section-description { font: 400 .84rem/1.55 "Geist", Arial, sans-serif; }
.page-links a { font: 400 .78rem/1.5 "Geist", Arial, sans-serif; letter-spacing: 0; text-transform: none; }
.site-footer { width: min(calc(100% - 2.5rem), 42rem); margin-inline: auto; font: 400 .7rem/1.5 "Geist Mono", monospace; letter-spacing: .04em; text-transform: none; }
.timeline:has(.timeline-item:hover) .timeline-item:not(:hover), .timeline:has(.timeline-item:focus-within) .timeline-item:not(:focus-within),
.paper-list:has(.paper-row:hover) .paper-row:not(:hover), .paper-list:has(.paper-row:focus-within) .paper-row:not(:focus-within),
.writing-posts:has(.writing-section-link:hover) .writing-section-link:not(:hover), .writing-posts:has(.writing-section-link:focus-visible) .writing-section-link:not(:focus-visible) { opacity: .24; }
@media (max-width: 600px) {
  .site-header { width: calc(100% - 2rem); gap: .6rem; padding: 1rem 0; }
  .header-actions { gap: .5rem; }
  .site-wordmark { display: none; }
  .main-nav { justify-content: flex-start; gap: clamp(.65rem, 4vw, 1.2rem); margin: 0 auto 0 0; }
  .main-nav a { font-size: .78rem; }
  .header-actions { margin-left: auto; }
  .profile, .directory-page, .page, .site-footer { width: calc(100% - 2rem); }
  .profile { padding-top: 1.5rem; }
  .about p { font-size: .86rem; }
  .workplaces { font-size: .86rem; }
  .paper-row { flex-wrap: wrap; gap: .35rem 1rem; padding: .95rem 0; }
  .paper-info { flex-basis: 100%; }
  .paper-links { margin: 0 0 .15rem auto; }
  .paper-info strong { font-size: .96rem; }
  .paper-info em, .coauthors, .project-description { font-size: .81rem; }
  .directory-group { margin-top: 2rem; }
  .site-footer { display: flex; }
}
@media (hover: none) {
  .timeline:has(.timeline-item:hover) .timeline-item:not(:hover), .timeline:has(.timeline-item:focus-within) .timeline-item:not(:focus-within),
  .paper-list:has(.paper-row:hover) .paper-row:not(:hover), .paper-list:has(.paper-row:focus-within) .paper-row:not(:focus-within),
  .writing-posts:has(.writing-section-link:hover) .writing-section-link:not(:hover) { opacity: 1; }
}
@media (prefers-reduced-motion: reduce) { .paper-row, .main-nav a { transition: none; } }

/* Unified project board typography and quiet view-all link */
.research-title,
.about-section h2,
.section-heading-row h2,
.content-section > h2,
.page-shell h1,
.directory-page > .editorial-heading,
.directory-page .directory-group h2 {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-style: normal;
  font-weight: 600;
  letter-spacing: -.03em;
}
.research-title { font-size: 1rem; font-weight: 600; line-height: 1.45; }
.about-section h2, .section-heading-row h2, .content-section > h2 { font-size: 1rem; line-height: 1.45; }
.page-shell h1 { font-size: 1.35rem; line-height: 1.4; }
.directory-page > .editorial-heading { font-size: clamp(1.25rem, 3vw, 1.55rem); font-weight: 600; }
.directory-page .directory-group h2 { font-size: .9rem; font-weight: 600; line-height: 1.5; }
.board-view-all {
  display: flex;
  justify-content: flex-end;
  width: max-content;
  margin: 1rem auto 0;
  padding: .38rem .65rem;
  border: 1px solid var(--line);
  border-radius: .65rem;
  background: color-mix(in srgb, var(--fg) 9%, var(--bg));
  color: var(--strong);
  font: 600 .74rem/1.4 "Geist", Arial, sans-serif;
  text-decoration: none;
  transition: color .18s ease, background-color .18s ease;
}
.board-view-all::after { content: "↗︎"; display: inline-block; margin-left: .3em; }
.board-view-all:hover, .board-view-all:focus-visible {
  background-color: color-mix(in srgb, var(--bg) 88%, #000 12%);
  color: var(--strong);
}
#about-heading, #research-heading, #writings-heading {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 1.1rem;
  font-style: normal;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -.03em;
}
.writing-section-link { transition: none; }
.writing-section-link:hover, .writing-section-link:focus-visible { padding-inline: 0; }
.writing-section-arrow { transition: none; }
.writing-section-link:hover .writing-section-arrow, .writing-section-link:focus-visible .writing-section-arrow { transform: none; }
.writing-list:has(.writing-section-link:hover) .writing-section-link:not(:hover),
.writing-list:has(.writing-section-link:focus-within) .writing-section-link:not(:focus-within) { opacity: .24; }
@media (hover: none) {
  .writing-list:has(.writing-section-link:hover) .writing-section-link:not(:hover),
  .writing-list:has(.writing-section-link:focus-within) .writing-section-link:not(:focus-within) { opacity: 1; }
}