/* ===== Tokens ===== */
:root {
  --ink: #0b1a2e;
  --ink-2: #13263f;
  --bg: #f7f6f2;
  --bg-alt: #eeece5;
  --surface: #ffffff;
  --text: #16202c;
  --muted: #5b6573;
  --line: #dcd9d0;
  --brand: #0a5ea8;
  --brand-soft: #e3eef8;
  --signal: #f5a524;
  --ok: #1f8a5b;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(11,26,46,.06), 0 8px 24px rgba(11,26,46,.06);
  --font-h: "Sora", system-ui, sans-serif;
  --font-b: "IBM Plex Sans", system-ui, sans-serif;
  --font-m: "IBM Plex Mono", ui-monospace, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c1522; --bg-alt: #101c2c; --surface: #142236; --text: #e7ecf2;
    --muted: #9aa7b8; --line: #23344b; --brand: #5eaaf0; --brand-soft: #16304d;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0c1522; --bg-alt: #101c2c; --surface: #142236; --text: #e7ecf2;
  --muted: #9aa7b8; --line: #23344b; --brand: #5eaaf0; --brand-soft: #16304d;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.25);
  color-scheme: dark;
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }   /* hidden elements stay hidden even if a rule sets display */
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--font-b); -webkit-font-smoothing: antialiased; }
h1, h2, h3 { font-family: var(--font-h); line-height: 1.15; letter-spacing: -.02em; margin: 0 0 .5em; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); }
h3 { font-size: 1.15rem; }
a { color: var(--brand); }
.mono { font-family: var(--font-m); }
.wrap { width: min(1160px, 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; z-index: 100; background: var(--surface); padding: 8px 12px; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }

/* ===== Announcement ===== */
.announce { background: var(--signal); color: #241600; font-size: .9rem; padding: 8px 16px; display: flex; gap: 10px; align-items: center; justify-content: center; flex-wrap: wrap; text-align: center; }
.announce a { color: inherit; font-weight: 600; }
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: #241600; animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1);} 50% { opacity: .35; transform: scale(1.5);} }

/* ===== Nav ===== */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.nav.scrolled { border-bottom-color: var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font: 700 1.15rem var(--font-h); }
:root[data-theme="dark"] .brand, :root:not([data-theme="light"]) .brand { color: var(--text); }
.brand-bg { color: var(--ink); }
.links { display: flex; gap: 4px; }
.links a { color: var(--muted); text-decoration: none; padding: 8px 12px; border-radius: 8px; font-weight: 500; font-size: .95rem; transition: color .15s, background .15s; }
.links a:hover { color: var(--text); background: var(--bg-alt); }
.links a.active { color: var(--brand); background: var(--brand-soft); }
.nav-actions { display: flex; gap: 6px; }
.icon-btn { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer; }
.menu-btn { display: none; }
@media (max-width: 860px) {
  .menu-btn { display: grid; }
  .links { position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: var(--surface); border-bottom: 1px solid var(--line); padding: 8px 16px 16px; display: none; }
  .links.open { display: flex; }
}

/* ===== Hero ===== */
.hero { position: relative; background: var(--ink); color: #e9eef5; overflow: hidden; padding: clamp(64px, 12vw, 128px) 0 56px; }
#net { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .9; }
.hero::after { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse at 20% 40%, rgba(11,26,46,.85), rgba(11,26,46,.35) 60%, rgba(11,26,46,.1)); pointer-events: none; }
.hero-inner { position: relative; z-index: 1; }
.eyebrow { color: var(--signal); font-size: .85rem; letter-spacing: .06em; text-transform: uppercase; margin: 0 0 18px; }
.hero h1 { font-size: clamp(2.3rem, 6.4vw, 4.6rem); max-width: 14ch; color: #fff; }
.lede { font-size: clamp(1.05rem, 1.8vw, 1.25rem); max-width: 56ch; color: #b9c6d6; margin: 0 0 32px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 10px; font-weight: 600; text-decoration: none; border: 1px solid transparent; cursor: pointer; font: 600 .95rem var(--font-b); transition: transform .15s, background .15s; }
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: var(--signal); color: #241600; }
.btn.ghost { border-color: currentColor; color: inherit; background: transparent; }
.hero .btn.ghost { color: #e9eef5; border-color: rgba(233,238,245,.35); }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; margin: 56px 0 0; max-width: 760px; }
.stats div { border-left: 2px solid var(--signal); padding-left: 14px; }
.stats dt { font: 700 clamp(1.6rem, 3.5vw, 2.3rem) var(--font-h); color: #fff; }
.stats dd { margin: 0; color: #9fb0c4; font-size: .85rem; }
@media (max-width: 600px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ===== Sections ===== */
.section { padding: clamp(64px, 9vw, 112px) 0; }
.section.alt { background: var(--bg-alt); }
.section.dark { background: var(--ink); color: #e9eef5; }
.section.dark h2 { color: #fff; }
.kicker { color: var(--brand); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; margin: 0 0 12px; }
.section.dark .kicker { color: var(--signal); }
.section-sub { color: var(--muted); max-width: 60ch; margin: -4px 0 32px; }
.section.dark .section-sub { color: #9fb0c4; }
.body-lg { font-size: 1.12rem; color: var(--muted); max-width: 62ch; }
.sub-h { margin-top: 56px; }
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* About */
.about-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }
.themes { display: grid; gap: 16px; margin-top: 28px; }
.theme { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.theme h3 { margin-bottom: 6px; }
.theme p { margin: 0; color: var(--muted); }
.pi-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); position: sticky; top: 88px; }
.avatar { width: 88px; height: 88px; border-radius: 50%; display: grid; place-items: center; font: 700 1.6rem var(--font-h); color: #fff; background: linear-gradient(135deg, var(--brand), var(--ink)); object-fit: cover; flex-shrink: 0; }
.pi-card .avatar { width: 96px; height: 96px; margin-bottom: 16px; }
.pi-card h3 { font-size: 1.3rem; margin-bottom: 2px; }
.pi-card .role { color: var(--muted); margin: 0 0 16px; font-size: .95rem; }
.pi-card ul { list-style: none; padding: 0; margin: 0 0 16px; font-size: .92rem; }
.pi-card li { padding: 6px 0; border-top: 1px solid var(--line); display: flex; gap: 10px; }
.pi-card li span:first-child { color: var(--muted); width: 56px; flex-shrink: 0; font-family: var(--font-m); font-size: .8rem; padding-top: 2px; }
.pill-links { display: flex; flex-wrap: wrap; gap: 8px; }
.pill-links a { font-size: .85rem; padding: 6px 12px; border-radius: 999px; background: var(--brand-soft); text-decoration: none; font-weight: 500; }

/* Research */
.area-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.area-tab { display: flex; align-items: center; gap: 10px; padding: 12px 18px; border-radius: 12px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer; font: 600 1rem var(--font-h); transition: border-color .15s, background .15s; }
.area-tab[aria-selected="true"] { border-color: var(--brand); background: var(--brand-soft); color: var(--brand); }
.area-tab svg { width: 22px; height: 22px; }
.area-panel { display: grid; grid-template-columns: 1fr 1.2fr; gap: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; min-height: 260px; }
@media (max-width: 860px) { .area-panel { grid-template-columns: 1fr; } }
.focus-list { list-style: none; padding: 0; margin: 0; counter-reset: f; }
.focus-list li { counter-increment: f; padding: 14px 0 14px 44px; border-bottom: 1px solid var(--line); position: relative; font-weight: 500; }
.focus-list li::before { content: counter(f, decimal-leading-zero); position: absolute; left: 0; top: 14px; font: 500 .8rem var(--font-m); color: var(--signal); background: var(--ink); padding: 2px 6px; border-radius: 5px; }
.related h4 { font: 500 .8rem var(--font-m); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 10px; }
.related ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.related li { font-size: .92rem; padding: 10px 12px; background: var(--bg-alt); border-radius: 10px; }
.related li small { display: block; color: var(--muted); }
.apps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 700px) { .apps { grid-template-columns: 1fr; } }
.app { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; border-top: 3px solid var(--signal); }
.app p { margin: 0; color: var(--muted); }

/* Publications */
.pub-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.text-link { font-weight: 500; text-decoration: none; }
.pub-chart { display: flex; align-items: flex-end; gap: 4px; height: 110px; margin: 12px 0 28px; padding-bottom: 22px; position: relative; }
.bar { flex: 1; background: var(--brand-soft); border-radius: 4px 4px 0 0; position: relative; cursor: pointer; border: none; padding: 0; transition: background .15s; min-width: 0; }
.bar:hover, .bar.on { background: var(--brand); }
.bar span { position: absolute; bottom: -20px; left: 50%; transform: translateX(-50%); font: .65rem var(--font-m); color: var(--muted); white-space: nowrap; }
.bar .n { bottom: auto; top: -16px; opacity: 0; transition: opacity .15s; color: var(--text); }
.bar:hover .n, .bar.on .n { opacity: 1; }
@media (max-width: 600px) { .bar span:not(.n) { display: none; } .bar:nth-child(3n+1) span:not(.n) { display: block; } }
.pub-controls { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 12px; }
.search { flex: 1 1 260px; display: flex; align-items: center; gap: 8px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 0 12px; color: var(--muted); }
.search input { border: 0; background: transparent; color: var(--text); font: inherit; padding: 11px 0; width: 100%; outline: none; }
select { font: inherit; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--text); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { font: 500 .85rem var(--font-b); padding: 7px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); cursor: pointer; }
.chip[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
:root[data-theme="dark"] .chip[aria-pressed="true"] { background: var(--brand); border-color: var(--brand); color: #06121f; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .chip[aria-pressed="true"] { background: var(--brand); border-color: var(--brand); color: #06121f; } }
.chip .c { opacity: .6; margin-left: 4px; font-family: var(--font-m); font-size: .75rem; }
.result-count { color: var(--muted); font-size: .8rem; margin: 8px 0 16px; }
.pub-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.pub { display: grid; grid-template-columns: 62px 1fr auto; gap: 16px; align-items: start; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; animation: fadeIn .3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px);} to { opacity: 1; transform: none; } }
.pub .yr { font: 600 .95rem var(--font-m); color: var(--brand); }
.pub .t { font-weight: 600; margin: 0 0 4px; }
.pub .a { color: var(--muted); font-size: .9rem; margin: 0; }
.pub .a b { color: var(--text); font-weight: 600; }
.pub .v { font-size: .9rem; margin: 2px 0 0; font-style: italic; }
.pub .tags { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.tag { font: 500 .7rem var(--font-m); text-transform: uppercase; letter-spacing: .04em; padding: 3px 8px; border-radius: 5px; background: var(--bg-alt); color: var(--muted); }
.tag.status { background: #fff3dc; color: #8a5a00; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .tag.status { background: #3a2c0d; color: var(--signal); } }
:root[data-theme="dark"] .tag.status { background: #3a2c0d; color: var(--signal); }
.pub .go { align-self: center; width: 36px; height: 36px; display: grid; place-items: center; border-radius: 9px; border: 1px solid var(--line); text-decoration: none; }
.pub .go:hover { background: var(--brand-soft); }
@media (max-width: 600px) { .pub { grid-template-columns: 1fr auto; } .pub .yr { grid-column: 1 / -1; } }
mark { background: color-mix(in srgb, var(--signal) 40%, transparent); color: inherit; border-radius: 3px; padding: 0 2px; }
.more { margin: 20px auto 0; display: flex; }
.empty { text-align: center; color: var(--muted); padding: 40px; }

/* People */
.seg { display: inline-flex; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 4px; margin-bottom: 28px; }
.seg button { border: 0; background: transparent; padding: 9px 16px; border-radius: 9px; font: 600 .92rem var(--font-b); color: var(--muted); cursor: pointer; }
.seg button[aria-selected="true"] { background: var(--ink); color: #fff; }
:root[data-theme="dark"] .seg button[aria-selected="true"] { background: var(--brand); color: #06121f; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .seg button[aria-selected="true"] { background: var(--brand); color: #06121f; } }
.people-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.person { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 4px; transition: transform .2s, box-shadow .2s; animation: fadeIn .35s ease; }
.person:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.person .avatar { width: 64px; height: 64px; font-size: 1.2rem; margin-bottom: 10px; }
.person h3 { margin: 0; font-size: 1.05rem; }
.person .lvl { color: var(--brand); font-weight: 600; font-size: .9rem; }
.person .prog { color: var(--muted); font-size: .85rem; }
.person .topic { font-size: .9rem; margin-top: 8px; padding-top: 10px; border-top: 1px solid var(--line); }
.person .when { font: .75rem var(--font-m); color: var(--muted); margin-top: auto; padding-top: 10px; }
.person .now { font-size: .85rem; background: var(--brand-soft); padding: 6px 10px; border-radius: 8px; margin-top: 8px; }

/* News */
.news-grid { display: grid; grid-template-columns: 1.7fr 1fr; gap: 48px; }
@media (max-width: 860px) { .news-grid { grid-template-columns: 1fr; } }
#news-tags { margin-bottom: 28px; }
.timeline { list-style: none; padding: 0; margin: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.timeline li { position: relative; padding: 0 0 22px 36px; animation: fadeIn .3s ease; }
.timeline li::before { content: ""; position: absolute; left: 0; top: 5px; width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 3px solid var(--brand); }
.timeline li[data-tag="Funding"]::before { border-color: var(--ok); }
.timeline li[data-tag="Paper"]::before { border-color: var(--signal); }
.timeline .d { font: 500 .8rem var(--font-m); color: var(--muted); display: flex; gap: 10px; align-items: center; }
.timeline p { margin: 4px 0 0; }
.media { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; align-self: start; position: sticky; top: 88px; }
.media ul { list-style: none; padding: 0; margin: 0; }
.media li { border-top: 1px solid var(--line); }
.media a { display: block; padding: 12px 0; text-decoration: none; color: var(--text); font-size: .93rem; }
.media a:hover { color: var(--brand); }

/* Join */
.positions { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
@media (max-width: 760px) { .positions { grid-template-columns: 1fr; } }
.position { background: var(--ink-2); border: 1px solid #23395a; border-radius: var(--radius); padding: 26px; }
.position h3 { color: #fff; font-size: 1.3rem; }
.position p { color: #b9c6d6; }
.position ul { padding-left: 18px; margin: 0; color: #d6dfea; }
.position li { margin: 6px 0; }
.position li::marker { color: var(--signal); }
.apply { margin-top: 28px; font-size: 1.05rem; }
.apply a { color: var(--signal); font-weight: 600; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: stretch; }
@media (max-width: 760px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.contact-card dl { display: grid; grid-template-columns: 80px 1fr; gap: 12px; margin: 20px 0 0; }
.contact-card dt { font: 500 .8rem var(--font-m); color: var(--muted); text-transform: uppercase; padding-top: 3px; }
.contact-card dd { margin: 0; }
.map { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); min-height: 300px; }
.map iframe { width: 100%; height: 100%; min-height: 300px; border: 0; display: block; }
.copy { margin-left: 6px; font: .75rem var(--font-m); border: 1px solid var(--line); background: transparent; color: var(--muted); border-radius: 6px; padding: 2px 8px; cursor: pointer; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 28px 0; font-size: .88rem; color: var(--muted); }
.foot-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer a { color: var(--muted); text-decoration: none; }

/* ===== v2: nav width ===== */
@media (max-width: 1060px) {
  .menu-btn { display: grid; }
  .links { position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: var(--surface); border-bottom: 1px solid var(--line); padding: 8px 16px 16px; display: none; }
  .links.open { display: flex; }
}
.links a { padding: 8px 10px; }

/* Shared */
.seg .c { opacity: .6; font-family: var(--font-m); font-size: .75rem; margin-left: 2px; }
.tag.rich { background: var(--brand-soft); color: var(--brand); }
.pub-title { color: inherit; text-decoration: none; }
.pub-title:hover { color: var(--brand); text-decoration: underline; }

/* Projects */
.proj-controls { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; margin-bottom: 24px; }
.proj-controls .seg { margin: 0; }
.proj-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 18px; }
@media (max-width: 420px) { .proj-grid { grid-template-columns: 1fr; } }
.proj { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: inherit; transition: transform .2s, box-shadow .2s, border-color .2s; animation: fadeIn .3s ease; }
.proj:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--brand); }
.proj-img { width: 100%; aspect-ratio: 16 / 7; object-fit: cover; display: block; }
.proj-img.ph { display: grid; place-items: center; background: linear-gradient(135deg, var(--ink), #1c3a63); color: var(--signal); }
.proj-img.ph[data-area="energy"] { background: linear-gradient(135deg, #0f2a22, #1f5a45); }
.proj-img.ph[data-area="ai"] { background: linear-gradient(135deg, #1d1638, #3b2d6e); }
.proj-img.ph[data-area="education"], .proj-img.ph[data-area="sensing"] { background: linear-gradient(135deg, #2b1a0c, #6a3d14); }
.proj-img.ph svg { width: 44px; height: 44px; opacity: .9; }
.proj-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.proj-meta { font: 500 .75rem var(--font-m); color: var(--muted); text-transform: uppercase; letter-spacing: .04em; display: flex; align-items: center; gap: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.dot.current { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 25%, transparent); }
.proj h3 { font-size: 1.05rem; margin: 2px 0 0; }
.proj .sponsor { margin: 0; color: var(--brand); font-weight: 500; font-size: .88rem; }
.proj .sum { margin: 4px 0 0; color: var(--muted); font-size: .9rem; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.more-link { margin-top: auto; padding-top: 10px; font-weight: 600; font-size: .9rem; color: var(--brand); }

/* Facilities */
.fac-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; align-items: start; }
@media (max-width: 860px) { .fac-grid { grid-template-columns: 1fr; } }
.fac { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; overflow: hidden; }
.fac-img { width: calc(100% + 48px); margin: -24px -24px 20px; aspect-ratio: 16/8; object-fit: cover; display: block; }
.fac h3 { font-size: 1.25rem; margin: 0; }
.fac-loc { color: var(--muted); font-size: .8rem; margin: 4px 0 0; }
.fac-sum { color: var(--muted); margin: 12px 0 16px; }
.equip { border-top: 1px solid var(--line); margin-bottom: 16px; }
.equip details { border-bottom: 1px solid var(--line); }
.equip summary { cursor: pointer; padding: 12px 0; font-weight: 600; font-size: .95rem; list-style: none; display: flex; align-items: center; gap: 8px; }
.equip summary::-webkit-details-marker { display: none; }
.equip summary::before { content: "+"; font: 500 1rem var(--font-m); color: var(--signal); width: 14px; }
.equip details[open] summary::before { content: "−"; }
.equip ul { margin: 0 0 12px 22px; padding: 0; color: var(--muted); font-size: .9rem; }
.equip li { margin: 3px 0; }

/* Teaching */
.teach-grid { display: grid; grid-template-columns: 1.7fr 1fr; gap: 48px; }
@media (max-width: 860px) { .teach-grid { grid-template-columns: 1fr; } }
.course-list { display: grid; gap: 10px; }
.course { display: grid; grid-template-columns: 130px 1fr; gap: 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; animation: fadeIn .3s ease; }
@media (max-width: 520px) { .course { grid-template-columns: 1fr; gap: 4px; } }
.course .code { color: var(--brand); font-weight: 500; font-size: .9rem; padding-top: 2px; }
.course h3 { font-size: 1rem; margin: 0; }
.course p { margin: 4px 0 0; color: var(--muted); font-size: .9rem; }
.course .tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.side-stack { display: grid; gap: 20px; align-self: start; }
.side-stack .media { position: static; }
.side-item { border-top: 1px solid var(--line); padding: 12px 0; }
.side-item strong { font-size: .95rem; }
.side-item strong a { color: var(--text); text-decoration: none; }
.side-item p { margin: 4px 0 0; color: var(--muted); font-size: .88rem; }

/* ===== Detail page ===== */
.crumbs { font: .85rem var(--font-m); color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--muted); }
.d-hero { background: var(--ink); color: #e9eef5; padding: 56px 0 44px; }
.d-hero h1 { color: #fff; font-size: clamp(1.7rem, 4vw, 2.7rem); max-width: 30ch; }
.d-hero .crumbs, .d-hero .crumbs a { color: #9fb0c4; }
.d-meta { display: flex; gap: 10px 22px; flex-wrap: wrap; color: #b9c6d6; font-size: .95rem; margin-top: 8px; }
.d-meta b { color: #fff; font-weight: 600; }
.d-authors { color: #d6dfea; font-size: 1.02rem; margin: 6px 0 0; }
.d-authors b { color: var(--signal); }
.d-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.d-hero .btn.ghost { color: #e9eef5; border-color: rgba(233,238,245,.35); }
.d-body { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; padding: 48px 0 80px; }
@media (max-width: 900px) { .d-body { grid-template-columns: 1fr; } }
.d-sec { margin-bottom: 44px; }
.d-sec h2 { font-size: 1.4rem; display: flex; align-items: center; gap: 10px; }
.d-sec h2::before { content: ""; width: 4px; height: 1.1em; background: var(--signal); border-radius: 2px; }
.prose { font-size: 1.05rem; max-width: 72ch; }
.prose p { margin: 0 0 1em; }
.d-list { padding-left: 20px; }
.d-list li { margin: 6px 0; }
.d-list li::marker { color: var(--signal); }
.figs { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.figs.one { grid-template-columns: 1fr; }
.fig { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.fig img { width: 100%; display: block; cursor: zoom-in; background: #fff; }
.fig figcaption { padding: 10px 14px; font-size: .88rem; color: var(--muted); }
.video { position: relative; aspect-ratio: 16/9; border-radius: 12px; overflow: hidden; background: #000; margin-bottom: 14px; }
.video iframe, .video video { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.d-side { display: grid; gap: 18px; align-self: start; position: sticky; top: 88px; }
.d-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.d-card h3 { font: 500 .78rem var(--font-m); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 10px; }
.d-card dl { margin: 0; display: grid; gap: 10px; }
.d-card dt { font: .72rem var(--font-m); color: var(--muted); text-transform: uppercase; }
.d-card dd { margin: 2px 0 0; font-size: .92rem; }
.d-card ul { list-style: none; margin: 0; padding: 0; }
.d-card li { padding: 8px 0; border-top: 1px solid var(--line); font-size: .9rem; }
.d-card li:first-child { border-top: 0; padding-top: 0; }
.d-card li small { display: block; color: var(--muted); }
pre.bib { background: var(--bg-alt); border: 1px solid var(--line); border-radius: 10px; padding: 14px; font: .8rem/1.5 var(--font-m); white-space: pre-wrap; word-break: break-word; margin: 0; }
.lightbox { position: fixed; inset: 0; background: rgba(5,10,18,.92); display: grid; place-items: center; z-index: 200; padding: 24px; cursor: zoom-out; }
.lightbox img { max-width: 100%; max-height: 88vh; border-radius: 8px; background: #fff; }
.lightbox p { color: #d6dfea; text-align: center; margin: 12px 0 0; }
.notfound { padding: 120px 0; text-align: center; }

/* ===== Featured publications ===== */
.pub-featured { display: grid; gap: 14px; margin: 8px 0 28px; }
.pub-featured:empty { display: none; }
.feat-card { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 24px 26px; border-radius: var(--radius); text-decoration: none; color: #e9eef5; background: radial-gradient(120% 140% at 100% 0%, #2a3f66 0%, var(--ink) 55%); border: 1px solid #2a4167; overflow: hidden; transition: transform .2s, box-shadow .2s; }
.feat-card::after { content: attr(data-mark); position: absolute; right: 18px; bottom: -18px; font: 700 6.5rem/1 var(--font-h); color: rgba(245,165,36,.08); letter-spacing: -.04em; pointer-events: none; }
.feat-card:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(11,26,46,.25); }
.feat-label { color: var(--signal); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; }
.feat-title { font: 600 clamp(1.1rem, 2.2vw, 1.4rem)/1.3 var(--font-h); color: #fff; max-width: 52ch; position: relative; z-index: 1; }
.feat-meta { color: #b9c6d6; font-size: .92rem; position: relative; z-index: 1; }
.feat-meta b { color: var(--signal); font-weight: 600; }
.feat-go { color: var(--signal); font-weight: 600; font-size: .9rem; margin-top: 4px; }
.pub.featured { border-color: var(--signal); box-shadow: inset 4px 0 0 var(--signal); }
.star-badge { display: inline-block; font: 600 .72rem var(--font-m); text-transform: uppercase; letter-spacing: .04em; color: #6b4300; background: #fff1d6; border: 1px solid #f5c873; padding: 3px 9px; border-radius: 999px; margin-bottom: 6px; }
.star-badge.on-dark { color: #241600; background: var(--signal); border-color: var(--signal); margin: 4px 0 2px; }
:root[data-theme="dark"] .star-badge:not(.on-dark) { color: var(--signal); background: #3a2c0d; border-color: #6b4d12; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .star-badge:not(.on-dark) { color: var(--signal); background: #3a2c0d; border-color: #6b4d12; } }
.tag.hl { background: #fff1d6; color: #6b4300; }
:root[data-theme="dark"] .tag.hl { background: #3a2c0d; color: var(--signal); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .tag.hl { background: #3a2c0d; color: var(--signal); } }

/* ===== Hero simulations ===== */
.hero::after { background: radial-gradient(ellipse at 18% 45%, rgba(11,26,46,.92) 0%, rgba(11,26,46,.55) 42%, rgba(11,26,46,.05) 75%); }
@media (max-width: 900px) { .hero::after { background: linear-gradient(180deg, rgba(11,26,46,.35), rgba(11,26,46,.8) 55%, rgba(11,26,46,.9)); } }
#net { opacity: 1; }
.dyn-caption { position: absolute; right: 0; bottom: 0; z-index: 2; width: 300px; display: flex; flex-direction: column; gap: 4px; padding: 14px 16px; border-radius: 12px; background: rgba(11,26,46,.55); border: 1px solid rgba(94,170,240,.22); backdrop-filter: blur(6px); }
.dyn-kicker { font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--signal); display: flex; align-items: center; gap: 6px; }
.dyn-kicker::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #3ddc84; box-shadow: 0 0 0 3px rgba(61,220,132,.2); animation: pulse 1.6s infinite; }
.dyn-name { font: 600 1rem var(--font-h); color: #fff; }
.dyn-desc { font-size: .82rem; line-height: 1.45; color: #b9c6d6; }
.dyn-link { font-size: .82rem; font-weight: 600; color: var(--signal); text-decoration: none; margin-top: 2px; }
.dyn-link:hover { text-decoration: underline; }
.dyn-dots { display: flex; gap: 6px; margin-top: 8px; }
.dyn-dots button { width: 22px; height: 6px; border-radius: 3px; border: 0; padding: 0; background: rgba(233,238,245,.25); cursor: pointer; transition: background .2s, width .2s; }
.dyn-dots button[aria-current="true"] { background: var(--signal); width: 34px; }
.dyn-dots button:hover { background: rgba(233,238,245,.55); }
@media (max-width: 1100px) { .dyn-caption { position: relative; width: auto; max-width: 420px; margin-top: 28px; } }
@media (prefers-reduced-motion: reduce) { .dyn-kicker::before { animation: none; } }

/* ===== Project concept simulations ===== */
.sim-host { background: var(--ink); border-radius: var(--radius); overflow: hidden; border: 1px solid #23395a; color: #e9eef5; }
.sim-head { padding: 18px 20px 6px; }
.sim-head h3 { color: #fff; font-size: 1.1rem; margin: 0 0 6px; }
.sim-head p { margin: 0; color: #b9c6d6; font-size: .92rem; line-height: 1.55; max-width: 78ch; }
.sim-canvas { padding: 6px 8px 0; }
.sim-canvas canvas { display: block; width: 100%; }
.sim-ctrls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 10px 16px 16px; }
.sim-ctrls button { font: 600 .82rem var(--font-b); padding: 7px 12px; border-radius: 8px; border: 1px solid rgba(233,238,245,.25); background: transparent; color: #e9eef5; cursor: pointer; }
.sim-ctrls button:hover { border-color: rgba(233,238,245,.55); }
.sim-ctrls button[aria-pressed="true"] { background: rgba(245,165,36,.16); border-color: var(--signal); color: var(--signal); }
.sim-ctrls button[aria-pressed="false"] { opacity: .75; }
.sim-badge { margin-left: auto; font: .72rem var(--font-m); color: #9fb0c4; display: flex; align-items: center; gap: 6px; }
.sim-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #3ddc84; }
@media (max-width: 640px) { .sim-badge { margin-left: 0; width: 100%; } }

/* ===== Mini live simulations on project cards ===== */
.proj-img.sim-mini { position: relative; aspect-ratio: 16 / 9; background: var(--ink); overflow: hidden; }
.proj-img.sim-mini canvas { display: block; width: 100%; height: 100%; }
.sim-mini-tag { position: absolute; left: 10px; bottom: 8px; font: 500 .66rem var(--font-m); letter-spacing: .06em; text-transform: uppercase; color: #e9eef5; background: rgba(11,26,46,.7); border: 1px solid rgba(94,170,240,.3); padding: 2px 8px 2px 18px; border-radius: 999px; }
.sim-mini-tag::before { content: ""; position: absolute; left: 7px; top: 50%; width: 6px; height: 6px; margin-top: -3px; border-radius: 50%; background: #3ddc84; }
.proj-img.ph[data-area="robotics"] { background: linear-gradient(135deg, #0f2a33, #1f5566); }