:root {
    color-scheme: light;
    --bg: #f5f8f7;
    --surface: #ffffff;
    --surface-soft: #edf5f3;
    --ink: #152b35;
    --muted: #5c6e74;
    --accent: #087e78;
    --accent-strong: #075c58;
    --border: #dce7e4;
    --shadow: 0 16px 50px rgba(19, 51, 54, .08);
    --serif: Georgia, "Times New Roman", serif;
    --sans: "Segoe UI", Arial, sans-serif;
}
:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #10191d;
    --surface: #172328;
    --surface-soft: #1e3032;
    --ink: #e8f0ee;
    --muted: #a7b7b6;
    --accent: #71d0c2;
    --accent-strong: #9be1d5;
    --border: #304347;
    --shadow: 0 16px 50px rgba(0, 0, 0, .18);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.7 var(--serif); transition: background-color .2s, color .2s; }
a { color: var(--accent-strong); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible { outline: 3px solid #e3a541; outline-offset: 3px; }
.skip-link { position: absolute; z-index: 20; top: 8px; left: 8px; padding: 9px 12px; transform: translateY(-160%); border-radius: 6px; background: var(--accent); color: #fff; font: 650 .85rem/1.4 var(--sans); }
.skip-link:focus { position: fixed; transform: translateY(0); }
button, input { font: inherit; }
.site-shell { width: min(1100px, calc(100% - 32px)); margin: 24px auto; overflow: clip; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); }
.site-header { padding: 35px clamp(24px, 6vw, 72px) 10px; }
.eyebrow, .section-kicker { margin: 0 0 8px; color: var(--accent); font: 700 .73rem/1.45 var(--sans); letter-spacing: .15em; text-transform: uppercase; }
h1, h2, h3 { color: var(--ink); }
h1 { margin: 0 0 8px; font-size: clamp(2rem, 4vw, 3rem); line-height: 1.1; font-weight: 500; letter-spacing: -.035em; }
h2 { margin: 0 0 18px; font-size: clamp(1.35rem, 2vw, 1.65rem); line-height: 1.3; font-weight: 500; letter-spacing: -.015em; }
h3 { margin: 0 0 9px; font: 650 1rem/1.45 var(--sans); }
p { margin: 0 0 14px; }
.subtitle { margin: 0; color: var(--muted); font: 1rem/1.55 var(--sans); }
.topbar { position: sticky; z-index: 10; top: 0; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 10px clamp(24px, 6vw, 72px); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: blur(12px); }
.brand { color: var(--ink); font: 650 .88rem/1.3 var(--sans); text-decoration: none; white-space: nowrap; }
.topbar-tools { display: flex; align-items: center; gap: 10px; }
.nav-panel ul { display: flex; flex-wrap: wrap; gap: 4px 22px; align-items: center; margin: 0; padding: 0; list-style: none; }
.nav-panel a { color: var(--muted); font: 600 .82rem/1.5 var(--sans); text-decoration: none; }
.nav-panel a:hover, .nav-panel a[aria-current="page"] { color: var(--accent-strong); }
.nav-panel a[aria-current="page"]::after { display: block; height: 2px; margin-top: 3px; background: var(--accent); content: ""; }
.icon-button, .menu-button { display: inline-grid; place-items: center; min-width: 38px; min-height: 38px; padding: 6px 10px; border: 1px solid var(--border); border-radius: 7px; background: var(--surface); color: var(--ink); font: 600 .8rem/1 var(--sans); cursor: pointer; }
.menu-button { display: none; }
main { padding: 34px clamp(24px, 6vw, 72px) 24px; }
section { margin: 0 0 46px; }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) 190px; gap: 42px; align-items: center; padding: 24px 0 42px; }
.hero-copy { min-width: 0; }
.profile-image { display: block; width: 190px; height: 225px; object-fit: cover; object-position: center 28%; border: 1px solid var(--border); border-radius: 9px; box-shadow: 12px 12px 0 var(--surface-soft); }
.title { margin: 0 0 4px; color: var(--accent-strong); font: 650 1.04rem/1.5 var(--sans); }
.affiliation { margin: 0 0 20px; color: var(--muted); font: .9rem/1.5 var(--sans); }
.intro { max-width: 730px; color: var(--ink); }
.intro p { margin-bottom: 12px; }
.status { display: inline-flex; align-items: center; gap: 8px; margin-top: 4px; padding: 7px 11px; border: 1px solid var(--border); border-radius: 99px; background: var(--surface-soft); color: var(--accent-strong); font: 650 .78rem/1.4 var(--sans); }
.status::before { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); content: ""; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.cv-actions { margin: 0 0 28px; }
.button { display: inline-flex; align-items: center; gap: 8px; padding: 9px 14px; border: 1px solid var(--accent); border-radius: 7px; background: var(--accent); color: #fff; font: 650 .82rem/1.35 var(--sans); text-decoration: none; transition: transform .16s, background-color .16s; }
:root[data-theme="dark"] .button { color: #10201f; }
.button:hover { transform: translateY(-1px); background: var(--accent-strong); color: var(--surface); }
.button.secondary { background: transparent; color: var(--accent-strong); }
.button.secondary:hover { background: var(--surface-soft); color: var(--accent-strong); }
.research-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.research-card { padding: 18px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); transition: transform .18s, box-shadow .18s, border-color .18s; }
.research-card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 9px 24px rgba(20, 72, 68, .08); }
.research-card p { margin: 0; color: var(--muted); font-size: .93rem; }
.highlight { padding: 19px 21px; border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 7px; background: var(--surface-soft); }
.highlight p:last-child { margin: 0; }
.contact-table { width: 100%; border-collapse: collapse; }
.contact-table td { padding: 7px 14px 7px 0; vertical-align: top; }
.contact-table td:first-child { width: 100px; color: var(--muted); font: 650 .83rem/1.7 var(--sans); }
.profiles { display: flex; flex-wrap: wrap; gap: 8px 19px; margin-top: 12px; font: 650 .82rem/1.6 var(--sans); }
.paper-list { display: grid; gap: 12px; }
.paper { padding: 17px 18px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); }
.paper[hidden] { display: none; }
.paper-top { display: flex; justify-content: space-between; gap: 14px; align-items: flex-start; }
.paper-title { margin: 0 0 5px; font: 650 .98rem/1.5 var(--sans); }
.paper-meta { margin: 0; color: var(--muted); font: .82rem/1.55 var(--sans); }
.paper-links { display: flex; flex-wrap: wrap; gap: 7px; margin: 12px 0 0; }
.paper-links a, .tag { display: inline-block; padding: 4px 9px; border: 1px solid var(--border); border-radius: 99px; background: var(--surface-soft); color: var(--accent-strong); font: 650 .72rem/1.4 var(--sans); text-decoration: none; }
.paper-links a:hover { border-color: var(--accent); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.filter-bar { display: grid; grid-template-columns: minmax(180px, 1fr) auto; gap: 12px; align-items: center; margin-bottom: 16px; }
.search-input { width: 100%; min-height: 42px; padding: 8px 12px; border: 1px solid var(--border); border-radius: 7px; background: var(--surface); color: var(--ink); }
.filter-buttons { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.filter-button { padding: 7px 10px; border: 1px solid var(--border); border-radius: 99px; background: var(--surface); color: var(--muted); font: 650 .73rem/1.2 var(--sans); cursor: pointer; }
.filter-button[aria-pressed="true"] { border-color: var(--accent); background: var(--accent); color: #fff; }
:root[data-theme="dark"] .filter-button[aria-pressed="true"] { color: #10201f; }
.paper details { margin-top: 12px; border-top: 1px solid var(--border); }
.paper summary { display: inline-block; margin-top: 9px; color: var(--accent-strong); font: 650 .79rem/1.5 var(--sans); cursor: pointer; }
.abstract { margin-top: 9px; color: var(--muted); font-size: .94rem; }
.item { margin: 0 0 20px; }
.item-header { display: flex; justify-content: space-between; gap: 16px; align-items: baseline; }
.item-title { color: var(--ink); font-weight: 650; }
.item-date { flex: 0 0 auto; color: var(--muted); font: .82rem/1.5 var(--sans); }
.item-subtitle { color: var(--muted); font-size: .92rem; }
.highlight-box { padding: 17px 19px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface-soft); }
.highlight-box .item:last-child { margin-bottom: 0; }
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; }
.skill-category { padding: 14px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); }
.skill-category-title { margin-bottom: 5px; font: 650 .88rem/1.4 var(--sans); }
.talk-item { display: grid; grid-template-columns: 112px 1fr; gap: 8px 17px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.talk-date { grid-row: span 3; color: var(--accent); font: 700 .82rem/1.5 var(--sans); }
.talk-title { margin: 0; font: 650 .96rem/1.5 var(--sans); }
.talk-event, .talk-location { color: var(--muted); font: .83rem/1.5 var(--sans); }
ul { padding-left: 1.2em; }
li { margin-bottom: 7px; }
footer { display: flex; justify-content: space-between; gap: 14px; align-items: center; padding: 17px clamp(24px, 6vw, 72px) 22px; border-top: 1px solid var(--border); color: var(--muted); font: .76rem/1.5 var(--sans); }
footer p { margin: 0; }
.back-to-top { color: var(--accent-strong); text-decoration: none; }
.empty-state { display: none; padding: 20px; color: var(--muted); text-align: center; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
@media (max-width: 820px) {
    .research-grid { grid-template-columns: 1fr; }
    .topbar { flex-wrap: wrap; }
    .topbar-tools { margin-left: auto; }
    .menu-button { display: inline-grid; }
    .nav-panel { display: none; flex-basis: 100%; padding: 8px 0 2px; }
    .nav-panel.is-open { display: block; }
    .nav-panel ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px 18px; }
    .nav-panel a { display: block; padding: 6px 0; }
    .nav-panel a[aria-current="page"]::after { display: none; }
    .filter-bar { grid-template-columns: 1fr; }
    .filter-buttons { justify-content: flex-start; }
}
@media (max-width: 560px) {
    .site-shell { width: min(100% - 14px, 520px); margin: 7px auto; border-radius: 9px; }
    .site-header { padding-top: 25px; }
    main { padding-top: 24px; }
    .hero { grid-template-columns: 1fr; gap: 23px; padding: 15px 0 32px; }
    .profile-image { grid-row: 1; width: 126px; height: 145px; }
    .paper-top { display: block; }
    .talk-item { grid-template-columns: 1fr; gap: 2px; }
    .talk-date { grid-row: auto; margin-bottom: 3px; }
    .item-header { align-items: flex-start; flex-direction: column; gap: 2px; }
    .contact-table td:first-child { width: 75px; }
    footer { align-items: flex-start; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}
@media print {
    body { background: #fff; color: #111; }
    .site-shell { width: 100%; margin: 0; border: 0; border-radius: 0; box-shadow: none; }
    .topbar, .actions, .filter-bar, .back-to-top { display: none !important; }
    .paper details { display: none; }
    a { color: #111; }
}