:root {
    --bg: #ffffff;
    --soft: #f4f4f7;
    --text: #17171a;
    --muted: #66666f;
    --line: #dedee5;
    --accent: #111111;
    --accent-soft: #eeeeee;
    --accent-contrast: #ffffff;
    --card: #ffffff;
    --shadow: 0 12px 32px rgba(0, 0, 0, .09);
}

[data-theme="dark"] {
    --bg: #111116;
    --soft: #19191f;
    --text: #f2f2f5;
    --muted: #aaaab4;
    --line: #303039;
    --accent: #ffffff;
    --accent-soft: #2a2a2f;
    --accent-contrast: #111111;
    --card: #18181e;
    --shadow: 0 12px 32px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Inter, sans-serif; line-height: 1.65; transition: background .25s, color .25s; }
a { color: inherit; }
img { max-width: 100%; }
.container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }

.site-header { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.nav-container { width: min(1160px, calc(100% - 40px)); min-height: 72px; margin: auto; display: flex; align-items: center; justify-content: space-between; }
.nav-social, .nav-links { display: flex; align-items: center; gap: 22px; }
.nav-social a { font-size: 1.35rem; transition: color .2s, transform .2s; }
.nav-social a:hover { color: var(--accent); transform: translateY(-2px); }
.nav-links a { text-decoration: none; font-size: .9rem; font-weight: 500; color: var(--muted); }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
.theme-toggle, .nav-toggle { border: 0; background: transparent; color: var(--text); cursor: pointer; }
.theme-toggle { font-size: 1rem; padding: 8px; }
.nav-toggle { display: none; }
.scroll-progress { position: absolute; bottom: -1px; left: 0; width: 0; height: 2px; background: var(--accent); }

.hero { min-height: 650px; padding-block: 100px 84px; display: grid; grid-template-columns: 1fr 340px; align-items: center; gap: 85px; }
.eyebrow { margin: 0 0 12px; color: var(--accent); font-size: .72rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.hero h1 { margin: 0 0 16px; font-size: clamp(2.7rem, 5vw, 4.7rem); line-height: 1.06; letter-spacing: -.06em; font-weight: 400; }
.hero h1 strong { font-weight: 700; }
.lead { max-width: 720px; margin: 0 0 22px; color: var(--text); font-size: 1.25rem; line-height: 1.55; }
.hero-copy > p:not(.eyebrow, .lead) { max-width: 750px; color: var(--muted); }
.hero-actions { display: flex; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; gap: 8px; width: fit-content; padding: 9px 16px; border: 1px solid var(--line); border-radius: 5px; color: var(--text); background: var(--card); text-decoration: none; font-size: .78rem; font-weight: 700; letter-spacing: .04em; transition: transform .2s, border-color .2s, background .2s; }
.button:hover { transform: translateY(-2px); border-color: var(--accent); }
.button.primary { color: var(--accent-contrast); border-color: var(--accent); background: var(--accent); }
.portrait-wrap { position: relative; justify-self: end; }
.portrait-wrap img { display: block; width: 320px; height: 320px; object-fit: cover; border-radius: 50%; box-shadow: var(--shadow); filter: saturate(.85); }
.status { position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%); width: max-content; padding: 8px 13px; border: 1px solid var(--line); border-radius: 30px; background: var(--card); box-shadow: var(--shadow); font-size: .7rem; font-weight: 600; }
.status span { display: inline-block; width: 7px; height: 7px; margin-right: 6px; border-radius: 50%; background: #28b46c; }

.quick-facts { display: grid; grid-template-columns: .8fr 1.3fr 1fr; gap: 50px; margin-bottom: 60px; padding: 38px 42px; background: var(--soft); }
.quick-facts h2 { margin: 0 0 4px; font-size: 1rem; }
.quick-facts p { margin: 3px 0; font-size: .85rem; }
.muted { color: var(--muted); }
.compact-list { margin: 0; padding-left: 18px; color: var(--muted); font-size: .85rem; }

.section { padding-block: 90px; }
.soft-section { background: var(--soft); }
.section-heading { display: flex; justify-content: space-between; align-items: end; margin-bottom: 48px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.section-heading h2, .contact h2 { margin: 0; font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -.045em; line-height: 1.1; }
.section-heading > a { color: var(--accent); font-size: .75rem; font-weight: 600; text-decoration: none; }

.publication { position: relative; display: grid; grid-template-columns: 42% 1fr; gap: 38px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.paper-visual { position: relative; min-height: 250px; overflow: hidden; border: 1px solid var(--line); border-radius: 4px; background: #fff; box-shadow: var(--shadow); }
.paper-visual img { position: absolute; inset: 0; width: 100%; height: 100%; padding: 18px; object-fit: contain; opacity: 0; transform: scale(1.025); transition: opacity .8s ease, transform 1.2s ease; }
.paper-visual img.active { opacity: 1; transform: scale(1); }
.carousel-dots { position: absolute; left: 14px; bottom: 12px; display: flex; gap: 5px; z-index: 2; }
.carousel-dots span { width: 18px; height: 3px; border-radius: 3px; background: #d0ccd9; transition: width .3s, background .3s; }
.carousel-dots span.active { width: 32px; background: var(--accent); }
.paper-copy { position: relative; padding: 8px 88px 8px 0; align-self: center; }
.paper-year { position: absolute; top: 2px; right: 0; color: var(--line); font-size: 2rem; font-weight: 500; letter-spacing: -.05em; line-height: 1; pointer-events: none; }
.paper-copy h3 { margin: 0 0 10px; font-size: 1.15rem; line-height: 1.42; letter-spacing: -.02em; overflow-wrap: break-word; }
.authors, .venue { margin: 4px 0; font-size: .87rem; }
.authors { color: var(--muted); }
.authors strong { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
.venue { font-style: italic; }
.paper-links { display: flex; gap: 8px; margin-top: 16px; }
.paper-links a, .paper-links button, .paper-link-disabled { padding: 5px 12px; border: 1px solid var(--text); border-radius: 2px; color: var(--text); background: transparent; font-family: inherit; text-decoration: none; font-size: .64rem; font-weight: 700; line-height: 1.65; letter-spacing: .06em; cursor: pointer; transition: color .2s, background .2s, border-color .2s; }
.paper-links a:hover, .paper-links button:hover, .paper-links button[aria-expanded="true"] { color: var(--accent-contrast); background: var(--accent); border-color: var(--accent); }
.paper-links button:focus-visible, .paper-links a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.paper-link-disabled { color: var(--muted); border-color: var(--line); cursor: not-allowed; opacity: .65; }
.paper-abstract { margin-top: 16px; padding: 14px 16px; border-left: 3px solid var(--accent); background: var(--accent-soft); }
.paper-abstract p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.7; }

.experience-list article { display: grid; grid-template-columns: 190px 1fr; gap: 40px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.experience-list .date { color: var(--accent); font-size: .78rem; font-weight: 700; }
.experience-list h3 { margin: 0; font-size: 1.1rem; }
.experience-list p { margin: 5px 0; color: var(--muted); font-size: .9rem; }
.experience-list .institution { color: var(--text); font-weight: 600; }
.experience-bullets { margin: 14px 0 0; padding-left: 18px; display: grid; gap: 8px; }
.experience-bullets li { color: var(--muted); font-size: .9rem; line-height: 1.65; }
.featured-project { display: grid; grid-template-columns: 1fr 1fr; overflow: hidden; border: 1px solid var(--line); background: var(--card); box-shadow: var(--shadow); }
.project-visual { position: relative; min-height: 360px; overflow: hidden; background: #f8f8fa; }
.project-visual img { position: absolute; inset: 0; width: 100%; height: 100%; padding: 28px; object-fit: contain; opacity: 0; transform: scale(1.025); transition: opacity .8s ease, transform 1.2s ease; }
.project-visual img.active { opacity: 1; transform: scale(1); }
.featured-project + .featured-project { margin-top: 40px; }
.project-copy { align-self: center; padding: 46px; }
.featured-project h3 { margin: 0; font-size: 1.5rem; letter-spacing: -.03em; }
.featured-project p:not(.eyebrow) { color: var(--muted); }
.award-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.award-grid article { display: flex; align-items: flex-start; gap: 20px; min-height: 180px; padding: 28px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); transition: transform .2s, border-color .2s, box-shadow .2s; }
.award-grid article:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow); }
.award-icon { display: grid; flex: 0 0 58px; width: 58px; height: 58px; place-items: center; border-radius: 14px; color: var(--accent); background: var(--accent-soft); font-size: 1.45rem; }
.award-copy h3 { margin: 2px 0 10px; font-size: 1.02rem; line-height: 1.55; }
.award-copy p { margin: 0; color: var(--muted); font-size: .85rem; line-height: 1.6; }
.contact { max-width: 820px; padding-block: 130px; text-align: center; }
.contact p:not(.eyebrow) { color: var(--muted); }
.contact .button { margin: 22px auto 0; }
footer { padding: 24px 0; color: var(--muted); background: var(--soft); border-top: 1px solid var(--line); font-size: .72rem; }
footer .container { display: flex; justify-content: space-between; }

@media (max-width: 820px) {
    .nav-social { gap: 14px; }
    .nav-toggle { display: flex; flex-direction: column; gap: 4px; padding: 10px; }
    .nav-toggle span { width: 20px; height: 2px; background: var(--text); }
    .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; align-items: stretch; padding: 20px; background: var(--bg); border-bottom: 1px solid var(--line); }
    .nav-links.open { display: flex; }
    .hero { grid-template-columns: 1fr; gap: 45px; padding-block: 60px; }
    .portrait-wrap { grid-row: 1; justify-self: center; }
    .portrait-wrap img { width: 220px; height: 220px; }
    .quick-facts, .publication, .featured-project, .award-grid { grid-template-columns: 1fr; }
    .quick-facts { gap: 28px; padding: 30px; }
    .paper-visual { min-height: 230px; }
    .paper-copy { padding-right: 0; }
    .paper-year { position: static; display: block; margin-bottom: 6px; color: var(--muted); font-size: .75rem; }
    .experience-list article { grid-template-columns: 1fr; gap: 2px; }
    .project-visual { min-height: 280px; }
    .project-copy { padding: 28px; }
}

@media (max-width: 520px) {
    .container, .nav-container { width: min(100% - 28px, 1160px); }
    .nav-social a:nth-child(2) { display: none; }
    .hero h1 { font-size: 2.7rem; }
    .hero-actions, .section-heading, footer .container { align-items: stretch; flex-direction: column; }
    .section { padding-block: 65px; }
    .paper-visual { min-height: 190px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}