:root {
  --bg: #fbfaf8; --surface: #ffffff; --ink: #1c1d21; --muted: #62646c; --faint: #9a9ca3; --rule: #e7e4df;
  --accent: #3b4fd8; --accent-soft: #eceffd; --gold: #a86b12;
  --serif: 'Newsreader', Georgia, serif; --sans: 'Inter', system-ui, -apple-system, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #121316; --surface: #1a1b1f; --ink: #ecebe7; --muted: #a3a4aa; --faint: #74767d; --rule: #2a2b31; --accent: #8c9bff; --accent-soft: #23264a; --gold: #e0a84f; }
}
:root[data-theme="dark"] { --bg: #121316; --surface: #1a1b1f; --ink: #ecebe7; --muted: #a3a4aa; --faint: #74767d; --rule: #2a2b31; --accent: #8c9bff; --accent-soft: #23264a; --gold: #e0a84f; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 1.25rem; }

/* top bar */
.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); }
.top .wrap { display: flex; align-items: center; gap: 1.25rem; height: 3.6rem; }
.brand { font: 500 1.15rem/1 var(--serif); color: var(--ink); white-space: nowrap; }
.brand:hover { text-decoration: none; }
.nav { display: flex; gap: 1.1rem; margin-left: auto; font-size: .9rem; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { color: var(--muted); white-space: nowrap; }
.nav a:hover, .nav a.on { color: var(--ink); text-decoration: none; }
.theme { border: 1px solid var(--rule); background: var(--surface); color: var(--muted); width: 2rem; height: 2rem; border-radius: 50%; cursor: pointer; flex: none; }
.theme:hover { color: var(--ink); }

/* hero */
.hero { display: grid; grid-template-columns: 148px 1fr; gap: 2rem; align-items: start; padding: 3.5rem 0 2.5rem; }
.hero img { width: 148px; height: 148px; border-radius: 50%; object-fit: cover; border: 1px solid var(--rule); }
.hero h1 { font: 500 2.4rem/1.1 var(--serif); margin: .2rem 0 .4rem; letter-spacing: -.01em; }
.role { color: var(--muted); margin: 0 0 1rem; }
.role b { color: var(--ink); font-weight: 500; }
.links { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.1rem; }
.links a { display: inline-flex; align-items: center; gap: .45rem; padding: .32rem .75rem; border: 1px solid var(--rule); border-radius: 999px; background: var(--surface); color: var(--ink); font-size: .85rem; }
.links a:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.metrics { display: flex; flex-wrap: wrap; align-items: baseline; gap: .25rem 1.4rem; font-size: .88rem; color: var(--muted); }
.metrics b { font: 500 1.35rem/1 var(--serif); color: var(--ink); margin-right: .3rem; }
.metrics .src { font-size: .78rem; color: var(--faint); }
.metrics[hidden] { display: none; }

.bio { font-size: 1.04rem; color: var(--ink); }
.bio p { margin: 0 0 1rem; }
.interests { display: flex; flex-wrap: wrap; gap: .4rem; margin: .4rem 0 0; padding: 0; list-style: none; }
.interests li { font-size: .8rem; color: var(--muted); background: var(--accent-soft); color: var(--accent); padding: .18rem .6rem; border-radius: 999px; }

section { padding: 2.6rem 0 .5rem; }
h2 { font: 500 1.6rem/1.2 var(--serif); margin: 0 0 1.1rem; display: flex; align-items: baseline; gap: .8rem; }
h2 .aside { font: 400 .85rem/1 var(--sans); color: var(--faint); margin-left: auto; }

/* publications */
.filters { display: flex; flex-wrap: wrap; gap: .4rem; margin: -.2rem 0 1.2rem; }
.filters button { font: 500 .8rem var(--sans); color: var(--muted); background: transparent; border: 1px solid var(--rule); border-radius: 999px; padding: .28rem .8rem; cursor: pointer; }
.filters button[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.year { font: 500 .8rem var(--sans); color: var(--faint); letter-spacing: .08em; margin: 1.4rem 0 .4rem; }
.year:first-of-type { margin-top: 0; }
.pubs { list-style: none; margin: 0; padding: 0; }
.pub { display: grid; grid-template-columns: 7.5rem 1fr; gap: 1rem; padding: .85rem 0; border-top: 1px solid var(--rule); }
.pub[hidden] { display: none; }
.venue { font-size: .76rem; font-weight: 600; color: var(--accent); line-height: 1.35; padding-top: .2rem; }
.venue.j { color: var(--gold); }
.venue.p, .venue.w { color: var(--muted); }
.pub h3 { font: 500 1.06rem/1.35 var(--serif); margin: 0 0 .2rem; }
.pub h3 a { color: var(--ink); }
.authors { font-size: .86rem; color: var(--muted); margin: 0 0 .35rem; }
.authors b { color: var(--ink); font-weight: 600; }
.plinks { display: flex; flex-wrap: wrap; align-items: center; gap: .2rem .9rem; font-size: .82rem; }
.plinks .cites { color: var(--faint); }
.plinks .cites a { color: var(--faint); }
.plinks .cites a:hover { color: var(--accent); }
.note { font-size: .82rem; color: var(--faint); margin-top: 1rem; }

/* news */
.news { list-style: none; margin: 0; padding: 0; }
.news > li { display: grid; grid-template-columns: 5.2rem 1fr; gap: 1rem; padding: .55rem 0; font-size: .94rem; }
.news time { font: 500 .8rem/1.9 var(--sans); color: var(--faint); font-variant-numeric: tabular-nums; }
.news ul { margin: .4rem 0 0; padding-left: 1.1rem; font-size: .88rem; color: var(--muted); }
.news ul li { margin: .25rem 0; }
details.more > summary { list-style: none; cursor: pointer; display: inline-block; margin-top: .6rem; font-size: .85rem; color: var(--accent); }
details.more > summary::-webkit-details-marker { display: none; }
details.more[open] > summary .o { display: none; } details.more:not([open]) > summary .c { display: none; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.card { background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; padding: 1.1rem 1.2rem; display: flex; flex-direction: column; }
.card h3 { font: 500 1.08rem/1.3 var(--serif); margin: 0 0 .3rem; }
.card p { font-size: .88rem; color: var(--muted); margin: 0 0 .7rem; flex: 1; }
.card .k { font-size: .74rem; font-weight: 600; letter-spacing: .06em; color: var(--faint); margin-bottom: .35rem; }
.card .go { font-size: .86rem; font-weight: 500; }
.ta { list-style: none; margin: 1rem 0 0; padding: 0; font-size: .9rem; color: var(--muted); }
.ta li { padding: .3rem 0; border-top: 1px solid var(--rule); display: flex; justify-content: space-between; gap: 1rem; }
.ta li span:last-child { color: var(--faint); white-space: nowrap; }

footer { margin: 3.5rem 0 0; padding: 1.5rem 0 2.5rem; border-top: 1px solid var(--rule); font-size: .82rem; color: var(--faint); }
footer .wrap { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; justify-content: space-between; }

@media (max-width: 640px) {
  .hero { grid-template-columns: 1fr; gap: 1.2rem; padding-top: 2.2rem; }
  .hero img { width: 112px; height: 112px; }
  .hero h1 { font-size: 2rem; }
  .pub, .news > li { grid-template-columns: 1fr; gap: .2rem; }
  .cards { grid-template-columns: 1fr; }
  .nav { gap: .9rem; }
  .brand { display: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* workshop galleries (teaching) */
.course { margin-bottom: 2.4rem; }
.course h3.ch { font: 500 1.25rem/1.3 var(--serif); margin: 0 0 .15rem; }
.course .cm { font-size: .86rem; color: var(--faint); margin: 0 0 1rem; }
.ws-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 1rem; }
.ws-card { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; overflow: hidden; min-width: 0; transition: border-color .2s, transform .2s, box-shadow .2s; }
.ws-card:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--rule)); transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,.06); }
.ws-thumb { display: block; aspect-ratio: 16 / 10; overflow: hidden; background: #111827; border-bottom: 1px solid var(--rule); }
.ws-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top left; display: block; transition: transform .3s ease; }
.ws-card:hover .ws-thumb img { transform: scale(1.03); }
.ws-body { padding: .8rem .95rem .95rem; display: flex; flex-direction: column; flex: 1; }
.ws-meta { display: flex; justify-content: space-between; align-items: center; gap: .5rem; margin-bottom: .35rem; font-size: .74rem; }
.ws-week { font-weight: 600; color: var(--accent); background: var(--accent-soft); border-radius: 4px; padding: .08rem .45rem; }
.ws-kind { color: var(--faint); }
.ws-title { font: 500 1.02rem/1.3 var(--serif); margin: 0 0 .3rem; }
.ws-title a { color: var(--ink); }
.ws-desc { font-size: .84rem; line-height: 1.5; color: var(--muted); margin: 0 0 .6rem; flex: 1; }
.ws-links { display: flex; gap: .9rem; font-size: .82rem; font-weight: 500; }
.ws-links i { margin-right: .25rem; }

/* lists with a right-hand column */
.rows { list-style: none; margin: 0; padding: 0; }
.rows li { display: grid; grid-template-columns: 1fr auto; gap: .3rem 1rem; padding: .7rem 0; border-top: 1px solid var(--rule); font-size: .94rem; }
.rows li:last-child { border-bottom: 1px solid var(--rule); }
.rows .what { color: var(--ink); }
.rows .where { color: var(--muted); font-size: .86rem; }
.rows .when { color: var(--faint); font-size: .84rem; white-space: nowrap; text-align: right; }
.lv { display: inline-block; font-size: .68rem; font-weight: 600; letter-spacing: .04em; padding: .05rem .4rem; border-radius: 4px; margin-right: .35rem; vertical-align: 1px; background: var(--accent-soft); color: var(--accent); }
.lv.b { background: color-mix(in srgb, var(--gold) 16%, transparent); color: var(--gold); }

/* media cards (projects, summer schools) */
.media { display: grid; grid-template-columns: 180px 1fr; gap: 1.2rem; background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; padding: 1rem; margin-bottom: 1rem; }
.media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 8px; border: 1px solid var(--rule); background: #fff; }
.media h3 { font: 500 1.12rem/1.3 var(--serif); margin: .1rem 0 .3rem; }
.media .k { font-size: .74rem; font-weight: 600; letter-spacing: .06em; color: var(--faint); margin-bottom: .2rem; }
.media p, .media ul { font-size: .88rem; color: var(--muted); margin: 0 0 .6rem; }
.media ul { padding-left: 1.1rem; }
.media .plinks i { margin-right: .3rem; }
.page-title { font: 500 2.4rem/1.1 var(--serif); margin: 3rem 0 .6rem; }
.page-lede { color: var(--muted); margin: 0 0 1rem; max-width: 40rem; }
@media (max-width: 640px) { .media { grid-template-columns: 1fr; } .media img { aspect-ratio: 16 / 9; } .page-title { font-size: 2rem; margin-top: 2rem; } }
.filters a.jump { font: 500 .8rem var(--sans); color: var(--muted); border: 1px solid var(--rule); border-radius: 999px; padding: .28rem .8rem; }
.filters a.jump:hover { color: var(--ink); border-color: var(--ink); text-decoration: none; }