:root {
    --navy: #1A3A6E;
    --navy-deep: #0D1F3F;
    --accent: #D9463B;
    --gold: #E7B34A;
    --bg: #FFFFFF;
    --bg-alt: #F3F6FB;
    --text: #13203A;
    --muted: #4A5B7A;
    --line: #DDE4EF;
    --card: #FFFFFF;
    --link: #1F4E9C;
    --shadow: 0 1px 2px rgba(13, 31, 63, 0.06), 0 8px 24px rgba(13, 31, 63, 0.07);
    --shadow-hi: 0 2px 4px rgba(13, 31, 63, 0.08), 0 16px 40px rgba(13, 31, 63, 0.14);
    --radius: 14px;
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0B1220;
        --bg-alt: #101A2D;
        --text: #E7EDF7;
        --muted: #A8B7D1;
        --line: #22314B;
        --card: #142038;
        --link: #8DB4F5;
        --accent: #F2786C;
        --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
        --shadow-hi: 0 2px 4px rgba(0, 0, 0, 0.35), 0 16px 40px rgba(0, 0, 0, 0.4);
    }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 70px; }
body { margin: 0; font-family: 'Inter', system-ui, sans-serif; font-size: 16px; line-height: 1.65; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
h1, h2 { font-family: 'Source Serif 4', Georgia, serif; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); line-height: 1.2; margin: 0 0 0.8rem; }
h3 { font-size: 1.05rem; margin: 1.8rem 0 0.8rem; }
h4 { margin: 0 0 0.3rem; font-size: 1.02rem; line-height: 1.35; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 16px; }
.kicker { text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.75rem; font-weight: 700; color: var(--accent); margin: 0 0 0.4rem; }
.lead { color: var(--muted); font-size: 1.05rem; max-width: 720px; margin: 0 0 1.8rem; }
.muted { color: var(--muted); }
.ico { width: 20px; height: 20px; flex: 0 0 auto; }
.ico-lg { width: 34px; height: 34px; }
.ico-xl { width: 64px; height: 64px; }

/* ---------- top bar ---------- */
.topbar { position: fixed; inset: 0 0 auto 0; z-index: 20; transition: background 0.25s, box-shadow 0.25s; color: #fff; }
.topbar.scrolled { background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(10px); box-shadow: 0 1px 0 var(--line); color: var(--text); }
.topbar-inner { display: flex; align-items: center; gap: 1.2rem; height: 62px; }
.brand { display: flex; align-items: center; gap: 0.55rem; font-weight: 700; color: inherit; white-space: nowrap; opacity: 0; transition: opacity 0.25s; }
.topbar.scrolled .brand { opacity: 1; }
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 50%; object-fit: cover; }
.nav { display: flex; gap: 1.3rem; overflow-x: auto; flex: 1; justify-content: flex-end; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { color: inherit; opacity: 0.8; font-size: 0.92rem; font-weight: 500; white-space: nowrap; padding: 0.3rem 0; border-bottom: 2px solid transparent; }
.nav a:hover { opacity: 1; text-decoration: none; }
.nav a.active { opacity: 1; border-bottom-color: var(--accent); }
.lang { display: flex; border: 1px solid currentColor; border-radius: 8px; overflow: hidden; flex: 0 0 auto; opacity: 0.9; }
.lang a { padding: 0.2rem 0.6rem; font-size: 0.8rem; font-weight: 700; color: inherit; }
.lang a:hover { text-decoration: none; }
.lang a[aria-current] { background: #fff; color: var(--navy); }
.topbar.scrolled .lang a[aria-current] { background: var(--navy); color: #fff; }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; color: #fff; padding: 118px 0 0;
    background: radial-gradient(1200px 500px at 80% -10%, #2C5FB3 0%, transparent 60%), linear-gradient(160deg, #0D1F3F 0%, #16336A 55%, #1C428A 100%); }
.hero-bg { position: absolute; inset: auto 0 0 0; width: 100%; height: 42%; pointer-events: none; }
#hero-path-a { stroke: rgba(231, 179, 74, 0.55); }
#hero-path-b { stroke: rgba(141, 180, 245, 0.45); }
#hero-band { fill: rgba(255, 255, 255, 0.035); }
.hero-inner { position: relative; display: flex; gap: 2.6rem; align-items: center; }
.hero-photo { flex: 0 0 220px; height: 220px; border-radius: 50%; padding: 5px; background: rgba(255, 255, 255, 0.9); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3); }
.hero-photo img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; display: block; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.78rem; font-weight: 600; color: var(--gold); margin: 0 0 0.6rem; }
.hero h1 { margin: 0; font-size: clamp(2.2rem, 4.6vw, 3.3rem); line-height: 1.05; font-weight: 700; }
.roles { display: flex; flex-wrap: wrap; gap: 0.8rem; margin: 1.1rem 0 1.5rem; }
.role { display: flex; align-items: center; gap: 0.75rem; background: rgba(255, 255, 255, 0.07); border: 1px solid rgba(255, 255, 255, 0.16); border-radius: 12px; padding: 0.6rem 1rem 0.6rem 0.6rem; color: #C9D6EE; font-size: 0.9rem; line-height: 1.35; transition: background 0.15s; }
.role:hover { background: rgba(255, 255, 255, 0.13); text-decoration: none; }
.role img { width: 44px; height: 44px; object-fit: contain; background: #fff; border-radius: 50%; padding: 4px; flex: 0 0 auto; }
.role b { display: block; color: #fff; font-size: 1.02rem; font-weight: 600; }
.cta { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 1.1rem; }
.btn { display: inline-block; padding: 0.6rem 1.2rem; border-radius: 10px; font-weight: 600; font-size: 0.95rem; transition: transform 0.15s, background 0.15s; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-solid { background: var(--gold); color: #1B1B1B; }
.btn-solid:hover { background: #F0C466; }
.btn-ghost { border: 1px solid rgba(255, 255, 255, 0.45); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); }
.links { display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; }
.links a { color: #C9D6EE; font-size: 0.88rem; font-weight: 500; }
.links a:hover { color: #fff; }
.kpis { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 3rem; border-top: 1px solid rgba(255, 255, 255, 0.15); }
.kpi { padding: 1.3rem 0.5rem 1.6rem; text-align: center; border-left: 1px solid rgba(255, 255, 255, 0.12); }
.kpi:first-child { border-left: 0; }
.kpi b { display: block; font-family: 'Source Serif 4', serif; font-size: 2.4rem; line-height: 1; color: #fff; }
.kpi span { font-size: 0.85rem; color: #C9D6EE; }

/* ---------- partners ---------- */
.partners { background: var(--bg); border-bottom: 1px solid var(--line); }
.partners-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.2rem 2rem; padding-top: 1.4rem; padding-bottom: 1.4rem; }
.partners a { display: block; }
.partners img { height: 46px; width: auto; filter: grayscale(0.35); opacity: 0.85; transition: filter 0.2s, opacity 0.2s, transform 0.2s; }
.partners a:hover img { filter: none; opacity: 1; transform: scale(1.05); }
@media (prefers-color-scheme: dark) { .partners img { background: #fff; border-radius: 8px; padding: 4px 8px; } }

/* ---------- sections ---------- */
.section { padding: 5rem 0; }
main > .section:nth-of-type(even) { background: var(--bg-alt); }
.rv { opacity: 1; }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

.about-photo { float: right; width: 38%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: 50% 50%; border-radius: 12px; margin: 0.3rem 0 1rem 1.6rem; box-shadow: 0 10px 30px rgba(0,0,0,0.12); }
@media (max-width: 640px) { .about-photo { float: none; width: 100%; margin: 0 0 1.2rem; } }
.about-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 3.5rem; align-items: start; }
.bio p { font-size: 1.07rem; margin: 0 0 1rem; }
.bio p:first-child::first-letter { font-family: 'Source Serif 4', serif; float: left; font-size: 3.4rem; line-height: 0.9; padding: 0.35rem 0.5rem 0 0; color: var(--navy); font-weight: 700; }
@media (prefers-color-scheme: dark) { .bio p:first-child::first-letter { color: var(--gold); } }
.chips { list-style: none; padding: 0; margin: 1.4rem 0 0; display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chips li { background: var(--bg-alt); border: 1px solid var(--line); border-radius: 999px; padding: 0.2rem 0.8rem; font-size: 0.85rem; font-weight: 500; }
.now { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem 1.6rem; box-shadow: var(--shadow); border-top: 4px solid var(--accent); }
.now h3 { margin: 0 0 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.8rem; color: var(--accent); }
.now ul { list-style: none; margin: 0; padding: 0; }
.now li { position: relative; padding: 0.55rem 0 0.55rem 1.3rem; border-bottom: 1px solid var(--line); font-size: 0.93rem; }
.now li:last-child { border-bottom: 0; }
.now li::before { content: ''; position: absolute; left: 0; top: 1.05rem; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); }

/* themes */
.themes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.theme { text-align: left; font: inherit; color: var(--text); background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; cursor: pointer; box-shadow: var(--shadow); transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; display: flex; flex-direction: column; }
.theme:hover { transform: translateY(-4px); box-shadow: var(--shadow-hi); border-color: var(--link); }
.theme .ico { color: var(--link); margin-bottom: 0.9rem; padding: 7px; box-sizing: content-box; background: color-mix(in srgb, var(--link) 10%, transparent); border-radius: 12px; }
.theme p { margin: 0 0 1rem; color: var(--muted); font-size: 0.93rem; flex: 1; }
.more { font-size: 0.85rem; font-weight: 600; color: var(--link); }

/* selected papers */
.featured { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.paper { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; color: var(--text); box-shadow: var(--shadow); transition: transform 0.2s, box-shadow 0.2s; }
.paper:hover { transform: translateY(-4px); box-shadow: var(--shadow-hi); text-decoration: none; }
.fig { height: 170px; background: #fff; display: flex; align-items: center; justify-content: center; overflow: hidden; border-bottom: 1px solid var(--line); }
.fig img { width: 100%; height: 100%; object-fit: cover; object-position: center top; transition: transform 0.4s; }
.paper:hover .fig img, .course:hover .fig img { transform: scale(1.04); }
.fig-logo img { object-fit: contain; width: 45%; height: 70%; }
.fig-type { padding: 1.2rem; color: #fff; font-family: 'Source Serif 4', serif; font-size: 1.35rem; font-weight: 600; text-align: center; line-height: 1.25; }
.fig-0 { background: linear-gradient(135deg, #16336A, #2C5FB3); }
.fig-1 { background: linear-gradient(135deg, #7A1F1A, #D9463B); }
.fig-2 { background: linear-gradient(135deg, #0F4C4C, #1F8A7A); }
.paper-body { padding: 1.1rem 1.3rem 1.3rem; display: flex; flex-direction: column; flex: 1; }
.journal { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 700; color: var(--accent); margin-bottom: 0.35rem; }
.paper p { color: var(--muted); font-size: 0.92rem; margin: 0.2rem 0 0.9rem; flex: 1; }

/* courses */
.courses { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.course { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; color: var(--text); box-shadow: var(--shadow); transition: transform 0.2s, box-shadow 0.2s; }
.course:hover { transform: translateY(-4px); box-shadow: var(--shadow-hi); text-decoration: none; }
.course .fig { height: 150px; }
.fig-icon { background: linear-gradient(135deg, #0D1F3F, #1F4E9C); color: var(--gold); }
.course-body { padding: 1.1rem 1.3rem 1.3rem; }
.course-body p { margin: 0.2rem 0 0; font-size: 0.92rem; }
.course-body .meta { color: var(--muted); font-size: 0.85rem; margin: 0 0 0.4rem; }
.tag { display: inline-block; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; color: #fff; background: var(--navy); border-radius: 4px; padding: 0.1rem 0.45rem; font-weight: 700; margin-bottom: 0.5rem; }
.note { margin-top: 1.6rem; color: var(--muted); }
.note b { color: var(--text); }

/* projects */
.projects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.project { display: block; background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--navy); border-radius: 10px; padding: 1.2rem 1.3rem; color: var(--text); transition: border-color 0.2s, transform 0.2s; }
@media (prefers-color-scheme: dark) { .project { border-left-color: var(--link); } }
a.project:hover { border-left-color: var(--accent); transform: translateX(3px); text-decoration: none; }
.project .meta { font-size: 0.78rem; font-weight: 600; color: var(--accent); }
.project h4 { margin-top: 0.3rem; }
.project p { margin: 0; font-size: 0.92rem; color: var(--muted); }

/* collaborators */
.collab-title { margin-top: 2.5rem; text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.8rem; color: var(--accent); }
.collabs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.collab { display: flex; gap: 0.9rem; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.3rem; color: var(--text); box-shadow: var(--shadow); transition: transform 0.2s, box-shadow 0.2s; }
.collab:hover { transform: translateY(-3px); box-shadow: var(--shadow-hi); text-decoration: none; }
.collab img, .collab .phd-av { flex: 0 0 64px; width: 64px; height: 64px; border-radius: 50%; object-fit: cover; font-size: 1.3rem; }
.collab h4 { margin: 0 0 0.15rem; font-size: 0.98rem; }
.collab p { margin: 0 0 0.25rem; font-size: 0.8rem; line-height: 1.35; color: var(--muted); }

/* publications */
.pub-panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem 1.4rem 2.2rem; box-shadow: var(--shadow); }
.pub-tools { display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: center; justify-content: space-between; }
.filters { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.filters button, .pub-theme button { border: 1px solid var(--line); background: var(--bg-alt); color: var(--text); border-radius: 999px; padding: 0.3rem 0.85rem; font: inherit; font-size: 0.86rem; font-weight: 500; cursor: pointer; }
.filters button small { color: var(--muted); margin-left: 0.2rem; }
.filters button[aria-pressed="true"] { background: var(--navy); border-color: var(--navy); color: #fff; }
.filters button[aria-pressed="true"] small { color: #D5E0F2; }
#pub-search { flex: 0 1 300px; min-width: 0; width: 100%; border: 1px solid var(--line); background: var(--bg-alt); color: var(--text); border-radius: 10px; padding: 0.5rem 0.9rem; font: inherit; font-size: 0.92rem; }
#pub-search:focus { outline: 2px solid var(--link); outline-offset: 1px; }
.pub-theme { display: flex; align-items: center; gap: 0.5rem; margin-top: 0.8rem; color: var(--link); font-size: 0.92rem; }
.pub-theme span { color: var(--text); }
.years { display: flex; align-items: flex-end; gap: 3px; height: 64px; margin-top: 1rem; }
.yb { flex: 1; height: 100%; display: flex; flex-direction: column; justify-content: flex-end; position: relative; }
.yb i { display: block; background: linear-gradient(180deg, var(--link), var(--navy)); border-radius: 3px 3px 0 0; transition: height 0.3s; }
.yb em { position: absolute; left: 50%; transform: translateX(-50%); bottom: calc(100% + 1px); font-style: normal; font-size: 0.62rem; color: var(--muted); display: none; }
.yb:hover em { display: block; }
.yb span { position: absolute; bottom: -1.25rem; left: 50%; transform: translateX(-50%); font-size: 0.68rem; color: var(--muted); }
#pub-list { margin-top: 1.5rem; }
.pub-year { display: grid; grid-template-columns: 90px 1fr; gap: 1rem; padding-top: 0.6rem; }
.year { position: sticky; top: 80px; align-self: start; margin: 0.7rem 0 0; font-family: 'Source Serif 4', serif; font-size: 1.6rem; color: var(--link); }
.pubs { list-style: none; padding: 0; margin: 0; }
.pubs li { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 0.9rem 1.1rem; margin: 0.6rem 0; transition: border-color 0.15s; }
.pubs li:hover { border-color: var(--link); }
.pt { font-weight: 600; line-height: 1.4; }
.pt a { color: var(--text); }
.pt a:hover { color: var(--link); }
.pa, .pv { font-size: 0.88rem; margin-top: 0.2rem; }
.pv { color: var(--muted); }
.doi { font-size: 0.8rem; overflow-wrap: anywhere; color: var(--muted); }
.kind { float: right; font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700; margin-left: 0.8rem; padding: 0.1rem 0.45rem; border-radius: 4px; background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); }
.award { display: inline-block; font-size: 0.72rem; font-weight: 700; color: #7A5200; background: #FCEFC9; border: 1px solid #E7B34A; border-radius: 4px; padding: 0.05rem 0.5rem; margin-bottom: 0.3rem; }
@media (prefers-color-scheme: dark) { .award { color: #F5D68A; background: rgba(231, 179, 74, 0.15); } }
.k-journal { background: color-mix(in srgb, var(--link) 12%, transparent); color: var(--link); }

/* PhD students */
.phd-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.phd { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem 1.3rem; box-shadow: var(--shadow); }
.phd-head { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 0.7rem; }
.phd-head h4 { margin: 0; }
.phd-head .muted { font-size: 0.82rem; }
.phd-av { flex: 0 0 56px; width: 56px; height: 56px; object-fit: cover; border-radius: 50%; display: grid; place-items: center; font-weight: 700; color: #fff; background: linear-gradient(135deg, var(--navy), #2C5FB3); font-size: 0.95rem; }
.phd ul { margin: 0; padding-left: 1.1rem; font-size: 0.86rem; }
.phd li { margin: 0.25rem 0; }
.phd li a { color: var(--text); }
.phd li a:hover { color: var(--link); }
.phd-topics { margin-top: 2.2rem; background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--gold); border-radius: 10px; padding: 1.2rem 1.5rem; }
.phd-topics h3 { margin-top: 0; }
.phd-topics ol { margin: 0.5rem 0 0; padding-left: 1.3rem; }
.phd-topics li { margin: 0.25rem 0; }

.phd-group { margin: 1.8rem 0 1rem; }
.phd-group small { color: var(--muted); font-weight: 500; margin-left: 0.3rem; }
.phd-period { font-size: 0.82rem; font-weight: 600; color: var(--link); }
.phd-st { display: inline-block; font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700; padding: 0.05rem 0.45rem; border-radius: 4px; margin-left: 0.3rem; background: color-mix(in srgb, var(--link) 12%, transparent); color: var(--link); }
.st-def { background: #FCEFC9; color: #7A5200; }
.phd-thesis { font-size: 0.9rem; margin: 0 0 0.4rem; }
.phd-thesis span { font-weight: 600; color: var(--accent); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }
.phd-co { font-size: 0.82rem; color: var(--muted); margin: 0 0 0.4rem; font-style: italic; }
.phd details summary { cursor: pointer; font-size: 0.85rem; font-weight: 600; color: var(--link); margin-top: 0.3rem; }
.phd details ul { margin-top: 0.4rem; }

/* conferences */
.talks { display: grid; gap: 1rem; }
#talks-older { display: grid; gap: 1rem; }
#talks-older[hidden] { display: none; }
.btn-more { justify-self: start; border: 1px solid var(--line); background: var(--card); color: var(--link); border-radius: 999px; padding: 0.5rem 1.2rem; font: inherit; font-weight: 600; cursor: pointer; }
.btn-more:hover { border-color: var(--link); }
.talk { display: grid; grid-template-columns: 170px 1fr; gap: 1.5rem; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem 1.5rem; box-shadow: var(--shadow); }
.talk-award { border-left: 4px solid var(--gold); }
.talk-when { font-family: 'Source Serif 4', serif; font-weight: 600; color: var(--link); font-size: 1.05rem; }
.talk h4 { font-size: 1.08rem; }
.talk h4 a { color: var(--text); }
.talk h4 a:hover { color: var(--link); }
.talk-place { margin: 0 0 0.6rem; color: var(--muted); font-size: 0.9rem; }
.talk-link { font-weight: 600; white-space: nowrap; }
.talk ul { list-style: none; margin: 0; padding: 0; }
.talk li { padding: 0.35rem 0; border-top: 1px dashed var(--line); font-size: 0.93rem; }
.tk { display: inline-block; font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700; padding: 0.05rem 0.45rem; border-radius: 4px; margin-right: 0.5rem; background: color-mix(in srgb, var(--link) 12%, transparent); color: var(--link); vertical-align: 1px; }
.tk-talk { background: var(--accent); color: #fff; }
.tt { font-weight: 600; }
.tt a { color: var(--text); }
.tt a:hover { color: var(--link); }
.tn { display: block; color: var(--muted); font-size: 0.85rem; margin-top: 0.1rem; }

/* code */
.repos { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.repo { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.1rem; color: var(--text); transition: transform 0.2s, box-shadow 0.2s; }
.repo:hover { transform: translateY(-3px); box-shadow: var(--shadow-hi); text-decoration: none; }
.repo-kind { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 700; color: var(--accent); }
.repo h4 { font-family: ui-monospace, 'SF Mono', Menlo, monospace; font-size: 0.95rem; color: var(--link); margin: 0.2rem 0 0.3rem; }
.repo p { margin: 0; font-size: 0.87rem; color: var(--muted); }

/* CV */
.cv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.cv-grid h3 { text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.8rem; color: var(--accent); }
.cv-grid > div > h3:first-child { margin-top: 0; }
.timeline { list-style: none; padding: 0 0 0 1.4rem; margin: 0; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding: 0 0 1.2rem; }
.timeline li::before { content: ''; position: absolute; left: calc(-1.4rem - 7px); top: 0.35rem; width: 12px; height: 12px; border-radius: 50%; background: var(--bg-alt); border: 3px solid var(--link); }
.timeline li:first-child::before { background: var(--accent); border-color: var(--accent); }
.timeline .when { display: inline-block; font-size: 0.78rem; font-weight: 700; color: var(--link); background: color-mix(in srgb, var(--link) 10%, transparent); padding: 0.05rem 0.5rem; border-radius: 4px; }
.timeline b { display: block; margin-top: 0.25rem; }
.timeline .what { display: block; font-size: 0.9rem; color: var(--muted); }
.timeline .desc { display: block; font-size: 0.85rem; color: var(--text); margin-top: 0.2rem; }
.ticks { list-style: none; padding: 0; margin: 0; }
.ticks li { position: relative; padding: 0.35rem 0 0.35rem 1.6rem; font-size: 0.93rem; }
.ticks li::before { content: '✓'; position: absolute; left: 0; top: 0.35rem; color: var(--accent); font-weight: 700; }

/* footer */
.footer { background: linear-gradient(160deg, #0D1F3F, #16336A); color: #DCE5F5; padding: 4rem 0 1.5rem; }
.footer h2 { color: #fff; }
.footer a { color: var(--gold); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 2rem; align-items: end; }
.footer-links { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: flex-end; }
.footer-links a { border: 1px solid rgba(255, 255, 255, 0.25); border-radius: 999px; padding: 0.3rem 0.9rem; font-size: 0.87rem; color: #fff; }
.footer-links a:hover { background: rgba(255, 255, 255, 0.1); text-decoration: none; }
.copyright { margin-top: 2.5rem; padding-top: 1.2rem; border-top: 1px solid rgba(255, 255, 255, 0.12); font-size: 0.85rem; color: #A9BAD8; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
    .themes, .featured, .courses, .projects, .phd-grid, .collabs { grid-template-columns: repeat(2, 1fr); }
    .repos { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 2rem; }
    .now { position: static; }
}
@media (max-width: 700px) {
    .topbar-inner { flex-wrap: wrap; height: auto; padding-top: 0.45rem; gap: 0.2rem 1rem; justify-content: space-between; }
    .nav { order: 3; flex: 0 0 100%; justify-content: flex-start; gap: 1.1rem; padding: 0.35rem 0 0.5rem; font-size: 0.9rem; white-space: nowrap; -webkit-overflow-scrolling: touch; }
    .brand { opacity: 1; }
    .hero { padding-top: 90px; }
    .hero-inner { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
    .hero-photo { flex-basis: auto; width: 140px; height: 140px; }
    .kpis { grid-template-columns: repeat(2, 1fr); margin-top: 2rem; }
    .kpi:nth-child(3) { border-left: 0; }
    .kpi b { font-size: 1.9rem; }
    .section { padding: 3.5rem 0; }
    .themes, .featured, .courses, .projects, .phd-grid, .collabs, .repos, .cv-grid, .footer-grid { grid-template-columns: 1fr; }
    .footer-links { justify-content: flex-start; }
    .partners img { height: 34px; }
    .partners-inner { justify-content: center; }
    .pub-panel { position: static; }
    .pub-year { grid-template-columns: 1fr; gap: 0; }
    .talk { grid-template-columns: 1fr; gap: 0.3rem; padding: 1.1rem; }
    .year { position: static; }
    .kind { float: none; display: inline-block; margin: 0 0 0.3rem; }
}

/* ---------- illustrations ---------- */
.viz { display: block; width: 100%; height: 100%; }
.hero-viz { flex: 0 0 330px; margin-left: auto; align-self: center; }
.hero-viz svg { height: auto; }
.hero-viz p { margin: 0.4rem 0 0; font-size: 0.72rem; color: #A9BAD8; line-height: 1.35; }
.hero-text { position: relative; z-index: 1; flex: 1 1 520px; min-width: 0; }
@media (max-width: 1180px) { .hero-viz { display: none; } }
.theme-viz { height: 92px; margin: -0.3rem -0.3rem 0.9rem; padding: 0.4rem; border-radius: 10px; background: linear-gradient(180deg, color-mix(in srgb, var(--link) 6%, transparent), transparent); }
.fig-viz { background: radial-gradient(140% 120% at 85% 0%, #2C5FB3 0%, #16336A 45%, #0D1F3F 100%); padding: 14px 18px; border-bottom: 0; }
.fig-viz .viz { height: 100%; }

/* ---------- map and network ---------- */
.viz-card { margin: 0 0 1.6rem; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1rem 1.2rem 0.9rem; }
.viz-card figcaption { font-size: 0.84rem; color: var(--muted); margin-top: 0.4rem; }
.viz-title { margin: 0 0 0.4rem; text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.8rem; color: var(--accent); }
.talk-map svg, .coauthor-net svg { display: block; width: 100%; height: auto; }
.map-bg { fill: color-mix(in srgb, var(--link) 3%, var(--card)); }
.map-sphere { fill: color-mix(in srgb, var(--link) 6%, var(--card)); }
.talk-map { position: relative; cursor: grab; }
.talk-map:active { cursor: grabbing; }
.map-land, .map-grat, .map-arc { vector-effect: non-scaling-stroke; }
.map-ctl { position: absolute; right: 10px; top: 10px; display: flex; flex-direction: column; gap: 4px; }
.map-ctl button { width: 30px; height: 30px; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--text); font: 600 1rem Inter, sans-serif; cursor: pointer; box-shadow: var(--shadow); }
.map-ctl button:hover { border-color: var(--link); color: var(--link); }
.map-grat { fill: none; stroke: var(--line); stroke-width: 0.5; }
.map-land { fill: color-mix(in srgb, var(--link) 16%, var(--card)); stroke: var(--card); stroke-width: 0.5; }
.map-arc { fill: none; stroke: var(--accent); stroke-width: 0.9; opacity: 0.35; }
.map-dot { fill: var(--accent); fill-opacity: 0.85; stroke: #fff; stroke-width: 1.2; cursor: pointer; }
.map-dot.home { fill: var(--navy); }
.map-dot:hover { fill-opacity: 1; stroke-width: 2; }
.net-spoke { stroke: color-mix(in srgb, var(--link) 35%, transparent); }
.net-link { stroke: color-mix(in srgb, var(--accent) 45%, transparent); }
.net-node { fill: var(--link); stroke: #fff; stroke-width: 1.2; cursor: pointer; }
.net-node:hover { fill: var(--accent); }
.net-me { fill: var(--navy); stroke: var(--gold); stroke-width: 3; }
.net-me-label { fill: #fff; font: 700 13px Inter, sans-serif; pointer-events: none; }
.net-label { fill: var(--text); font: 600 11px Inter, sans-serif; pointer-events: none; paint-order: stroke; stroke: var(--card); stroke-width: 3px; }
.viz-tip { position: fixed; z-index: 50; max-width: 290px; background: #0D1F3F; color: #fff; font-size: 0.8rem; line-height: 1.4; padding: 0.55rem 0.7rem; border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,0.3); pointer-events: none; }
.viz-tip ul { margin: 0.3rem 0 0; padding-left: 1rem; }
.viz-tip li span { color: #A9BAD8; }

/* ---------- inner pages ---------- */
.topbar.solid { background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(10px); box-shadow: 0 1px 0 var(--line); color: var(--text); }
.topbar.solid .brand { opacity: 1; }
.topbar.solid .lang a[aria-current] { background: var(--navy); color: #fff; }
.nav a[aria-current="page"] { opacity: 1; border-bottom-color: var(--accent); }
.page-hero { color: #fff; padding: 104px 0 44px; background: radial-gradient(900px 380px at 85% -20%, #2C5FB3 0%, transparent 60%), linear-gradient(160deg, #0D1F3F 0%, #16336A 60%, #1C428A 100%); }
.page-hero-person { display: inline-flex; align-items: center; gap: 0.6rem; color: #C9D6EE; font-weight: 600; font-size: 0.9rem; }
.page-hero-person:hover { color: #fff; text-decoration: none; }
.page-hero-person img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; border: 2px solid rgba(255,255,255,0.6); }
.page-hero h1 { margin: 0.7rem 0 0.4rem; font-size: clamp(2rem, 4vw, 2.8rem); }
.page-hero p { margin: 0; color: #C9D6EE; max-width: 720px; }
body:not([data-page="home"]) main > .section:first-child { padding-top: 3rem; }

/* news */
.news { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.8rem 2rem; }
.news li { display: grid; grid-template-columns: 90px 1fr; gap: 1rem; align-items: baseline; padding: 0.8rem 0; border-bottom: 1px solid var(--line); }
.news time { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--accent); }
.news a { color: var(--text); font-weight: 500; }
.news a:hover { color: var(--link); }

/* publication actions */
.pub-actions { margin-top: 0.4rem; display: flex; gap: 0.4rem; }
.pub-btn { display: inline-block; border: 1px solid var(--line); background: var(--bg-alt); color: var(--link); border-radius: 6px; padding: 0.08rem 0.55rem; font: 600 0.72rem Inter, sans-serif; cursor: pointer; }
.pub-btn:hover { border-color: var(--link); text-decoration: none; }
.bib { margin-top: 0.5rem; position: relative; }
.bib pre { margin: 0; background: #0D1F3F; color: #DCE5F5; font-size: 0.75rem; line-height: 1.45; padding: 0.8rem 1rem; border-radius: 8px; overflow-x: auto; }
.bib .pub-btn { position: absolute; top: 0.5rem; right: 0.5rem; background: #16336A; color: #fff; border-color: #2C5FB3; }

/* CV page */
.cvhead { padding: 1.6rem 0 0 !important; background: none !important; }
.cvhead-inner { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.cv-contact { margin: 0; color: var(--muted); font-size: 0.9rem; line-height: 1.5; }
.cv-sec { text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.8rem; color: var(--accent); }
.cv-journal { padding-left: 1.3rem; margin: 0 0 1rem; }
.cv-journal li { font-size: 0.88rem; margin: 0.35rem 0; }
@media (max-width: 700px) { .news { grid-template-columns: 1fr; } .news li { grid-template-columns: 76px 1fr; } }

/* print (also used to produce the CV PDF) */
@media print {
    @page { size: A4; margin: 14mm 14mm 16mm; }
    body { font-size: 10pt; background: #fff; color: #000; }
    .topbar, .footer-links, .copyright, #cv-pdf, .map-ctl, .footer { display: none !important; }
    .cvhead { padding: 0 0 3mm !important; } .cv-contact { color: #000; font-size: 9.5pt; }
    #cv > .wrap > h2, #cv > .wrap > .kicker { display: none !important; }
    .project { border: 0 !important; border-left: 2pt solid #1A3A6E !important; padding: 1mm 0 1mm 3mm !important; border-radius: 0 !important; }
    .project p { font-size: 8.5pt; } .project h4 { font-size: 9.5pt; margin: 0.5mm 0; }
    .timeline li { padding-bottom: 2mm; } .timeline .what, .ticks li, .cv-journal li { font-size: 8.8pt; }
    .page-hero-person span { font-size: 16pt; color: #1A3A6E; font-weight: 700; }
    .page-hero h1, .page-hero p { display: none; }
    .page-hero { background: none !important; color: #000; padding: 0 0 6mm; border-bottom: 1.5pt solid #1A3A6E; }
    .page-hero h1 { color: #1A3A6E; font-size: 20pt; margin: 2mm 0 1mm; }
    .page-hero p, .page-hero-person { color: #333 !important; }
    .page-hero-person img { width: 18mm; height: 18mm; }
    main > .section { padding: 5mm 0 !important; background: none !important; }
    .rv { opacity: 1 !important; transform: none !important; }
    .project, .card, .viz-card { box-shadow: none !important; }
    .projects { grid-template-columns: repeat(2, 1fr) !important; gap: 3mm !important; }
    .cv-grid { grid-template-columns: 1fr 1fr !important; gap: 6mm !important; }
    .footer { background: none !important; color: #000; padding: 4mm 0 0; border-top: 1pt solid #999; }
    .footer h2 { color: #1A3A6E; font-size: 12pt; }
    .footer a { color: #000; }
    a { color: #000; text-decoration: none; }
    h2 { font-size: 14pt; color: #1A3A6E; }
    .kicker { display: none; }
    .timeline li, .project, .cv-journal li { break-inside: avoid; }
}

/* inner pages: the page band already carries the title */
body:not([data-page="home"]) main > .section:first-child > .wrap > .kicker,
body:not([data-page="home"]) main > .section:first-child > .wrap > h2:first-of-type { display: none; }

.more-proj { margin-top: 2rem; }
.more-projects { list-style: none; padding: 0; margin: 0.6rem 0 0; display: grid; gap: 0.55rem; }
.more-projects .meta { display: inline-block; min-width: 5.5rem; font-size: 0.82rem; font-weight: 600; color: var(--accent); }

.eyebrow .seg { white-space: nowrap; }
.partners a { display: flex; flex-direction: column; align-items: center; gap: 0.35rem; text-decoration: none; }
.partners .plabel { font-size: 0.72rem; color: var(--muted); text-align: center; max-width: 9rem; line-height: 1.2; }
@media (max-width: 700px) { .hero { padding-top: 120px; } }