:root {
  --bg: #f4f4f1;
  --surface: #ffffff;
  --surface-alt: #e8e8e3;
  --text: #111111;
  --text-muted: #4a4a46;
  --border: #cfcfc7;
  --border-strong: #111111;
  --accent: #0057ff;
  --accent-soft: #dde6ff;
  --container: 1180px;
  --h1: clamp(2.35rem, 5.2vw, 4.85rem);
  --h2: clamp(1.7rem, 3.2vw, 3rem);
  --h3: clamp(1.08rem, 1.2vw, 1.35rem);
  --body: clamp(1rem, .96rem + .18vw, 1.08rem);
  --meta: clamp(.74rem, .71rem + .1vw, .84rem);
  --sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--sans); line-height: 1.58; overflow-x: hidden; }
img { max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { letter-spacing: -.018em; }
.container { width: min(var(--container), 92vw); margin: 0 auto; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 1rem; top: 1rem; z-index: 100; padding: .5rem .7rem; background: var(--surface); border: 2px solid var(--accent); }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(244,244,241,.96); border-bottom: 1px solid var(--border); backdrop-filter: blur(6px); }
.nav-wrap { min-height: 62px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1rem; }
.brand { font-size: 1.12rem; font-weight: 650; text-decoration: none; white-space: nowrap; }
.nav-links { display: flex; flex-wrap: wrap; justify-content: center; gap: .28rem; list-style: none; margin: 0; padding: 0; }
.nav-links a, .lang-switcher, .menu-toggle { font-family: var(--mono); font-size: var(--meta); }
.nav-links a { display: block; padding: .28rem .42rem; color: var(--text-muted); text-decoration: none; border: 1px solid transparent; border-radius: 4px; }
.nav-links a:hover, .nav-links a[aria-current="true"] { color: var(--accent); border-color: var(--accent); }
.lang-switcher { display: flex; align-items: center; gap: .35rem; }
.lang-switcher label { color: var(--text-muted); }
.lang-switcher select { padding: .28rem .42rem; font: inherit; background: var(--surface); border: 1px solid var(--border); border-radius: 4px; }
.menu-toggle { display: none; padding: .35rem .5rem; background: var(--surface); border: 1px solid var(--border); }

main { padding: 1rem 0 2rem; }
.section { position: relative; margin-bottom: 1rem; padding: clamp(1.1rem, 2vw, 1.7rem); background: var(--surface); border: 1px solid var(--border); }
.section::before { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(17,17,17,.035) 1px, transparent 1px), linear-gradient(90deg,rgba(17,17,17,.035) 1px, transparent 1px); background-size: 30px 30px; }
.section > * { position: relative; z-index: 1; }
.section-plain::before { display: none; }
.hero { min-height: min(61vh, 560px); display: grid; align-items: center; }
.chapter-number, .overline, .meta, .label, .status { font-family: var(--mono); font-size: var(--meta); letter-spacing: .07em; }
.chapter-number { margin-bottom: .35rem; color: var(--accent); }
.overline { margin-bottom: .75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .1em; }
h1 { max-width: 15ch; margin-bottom: 1rem; font-size: var(--h1); line-height: .96; }
h2 { margin-bottom: .4rem; font-size: var(--h2); line-height: 1; }
h3 { font-size: var(--h3); line-height: 1.25; }
.lead, .section-subtitle, .bio { font-size: var(--body); }
.lead { max-width: 72ch; color: #20201e; }
.section-subtitle { max-width: 76ch; margin-bottom: 0; color: var(--text-muted); }

.hero-layout { display: grid; grid-template-columns: minmax(0,1.55fr) minmax(230px,.7fr); gap: clamp(1.2rem,3vw,3rem); align-items: center; }
.portrait-box { max-width: 300px; justify-self: end; margin: 0; padding: .55rem; background: var(--surface); border: 1px solid var(--border-strong); }
.portrait { display: block; width: 100%; aspect-ratio: 4/5; object-fit: cover; filter: grayscale(.12) contrast(1.04); }
.tags, .actions, .link-row { display: flex; flex-wrap: wrap; gap: .4rem; }
.tags, .actions { margin-top: 1rem; }
.tag, .button { padding: .3rem .5rem; font: var(--meta) var(--mono); }
.tag { background: var(--surface-alt); border: 1px solid var(--border-strong); }
.button { display: inline-block; background: var(--surface); border: 1px solid var(--border-strong); text-decoration: none; }
.button.primary { background: var(--border-strong); color: var(--surface); }
.button:hover { color: var(--accent); border-color: var(--accent); }
.button.primary:hover { background: var(--accent); color: var(--surface); }

.works-grid, .projects-grid, .profile-row { display: grid; gap: .75rem; margin-top: 1rem; }
.works-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
.projects-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
.profile-row { grid-template-columns: repeat(3,minmax(0,1fr)); }
.profile-row-wide { grid-template-columns: repeat(3,minmax(0,1fr)); }
.card, .project-card, .profile-chip, .facts { background: var(--surface); border: 1px solid var(--border); }
.card, .project-card, .profile-chip { padding: .95rem; }
.card, .project-card { display: flex; flex-direction: column; }
.card:hover, .project-card:hover, .profile-chip:hover { border-color: var(--border-strong); }
.featured-card { grid-column: 1 / -1; padding: clamp(1rem,2vw,1.35rem); border-color: var(--border-strong); background: #fdfeff; }
.featured-card h3 { max-width: 48ch; font-size: clamp(1.25rem,2vw,1.75rem); }
.meta { color: var(--text-muted); text-transform: uppercase; }
.label { color: var(--accent); text-transform: uppercase; }
.card h3, .project-card h3 { margin: .35rem 0; }
.card p, .project-card p { margin-bottom: .55rem; color: var(--text-muted); font-size: .98rem; }
.bib { color: var(--text) !important; font-family: var(--mono); font-size: var(--meta) !important; }
.evidence-list { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: .6rem; margin: .35rem 0 .7rem; }
.evidence-list.compact { grid-template-columns: 1fr; }
.evidence-list div { padding-top: .5rem; border-top: 1px solid var(--border); }
.evidence-list dt { margin-bottom: .12rem; color: var(--text-muted); font: var(--meta) var(--mono); text-transform: uppercase; }
.evidence-list dd { margin: 0; font-size: .94rem; }
.card-link { display: inline-block; margin-top: auto; padding-top: .25rem; color: var(--accent); font: var(--meta) var(--mono); text-decoration: none; }
.card-link:hover, .text-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.link-row { margin-top: auto; }
.all-publications { margin-top: 1rem; padding-top: .8rem; border-top: 1px solid var(--border); }

.research-streams { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1.1rem; margin-top: 1.2rem; }
.stream { padding-top: .75rem; border-top: 2px solid var(--border-strong); }
.stream h3 { margin: .3rem 0; }
.stream p { margin: 0; color: var(--text-muted); font-size: .98rem; }
.status { display: inline-block; margin: .15rem 0 .25rem; color: var(--text); background: var(--accent-soft); padding: .18rem .35rem; border: 1px solid #b7c8ff; text-transform: uppercase; }
.stream .card-link { margin-top: .55rem; }

.method-strip { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: 1rem; }
.method-strip span { padding: .35rem .5rem; background: var(--surface-alt); border-top: 2px solid var(--border-strong); font-size: .95rem; }

.about-layout { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(300px,.7fr); gap: 1rem; margin-top: 1rem; }
.bio { max-width: 70ch; }
.bio p:last-child { margin-bottom: 0; }
.text-link { color: var(--accent); font: var(--meta) var(--mono); text-decoration: none; }
.facts { padding: .95rem; background: var(--surface-alt); }
.facts dl { display: grid; gap: .8rem; margin: 0; }
.facts dt { color: var(--text-muted); font: var(--meta) var(--mono); text-transform: uppercase; }
.facts dd { margin: .12rem 0 0; }
.facts a { color: var(--accent); text-decoration: none; }
.facts a:hover { text-decoration: underline; }

.profile-chip { text-decoration: none; }
.profile-chip strong { display: block; }
.profile-chip span { display: block; margin-top: .1rem; color: var(--text-muted); font: var(--meta) var(--mono); overflow-wrap: anywhere; }
.site-footer { padding: 1rem 0 1.6rem; color: var(--text-muted); border-top: 1px solid var(--border); font: var(--meta) var(--mono); }
.site-footer p { margin: .25rem 0; }

.legal-page, .cv-page, .article-page { min-height: 70vh; display: grid; align-items: start; }
.legal-copy, .cv-copy, .article-copy { max-width: 900px; }
.legal-copy h1, .cv-copy h1, .article-copy h1 { max-width: none; }
.legal-copy h2, .cv-copy h2, .article-copy h2 { margin-top: 1.5rem; font-size: 1.35rem; }
.legal-copy p, .legal-copy li, .cv-copy p, .cv-copy li, .article-copy p, .article-copy li { color: var(--text-muted); }
.cv-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; align-items: end; margin-bottom: 1.4rem; }
.cv-contact { font: var(--meta) var(--mono); }
.cv-section { padding-top: 1rem; margin-top: 1rem; border-top: 1px solid var(--border-strong); }
.cv-section h2 { margin: 0 0 .7rem; }
.cv-list { display: grid; gap: .8rem; }
.cv-item { display: grid; grid-template-columns: minmax(130px,.3fr) minmax(0,1fr); gap: 1rem; }
.cv-item .when { color: var(--text-muted); font: var(--meta) var(--mono); }
.cv-item p { margin: 0; }
.article-meta { color: var(--text-muted); font: var(--meta) var(--mono); margin-bottom: 1.2rem; }
.article-copy { font-size: 1.03rem; }
.article-copy p { color: var(--text); }
.article-copy .note { padding: .8rem; background: var(--surface-alt); border-left: 3px solid var(--accent); color: var(--text-muted); }
.error-page { min-height: 72vh; display: grid; align-items: center; }
.error-code { margin-bottom: .3rem; color: var(--accent); font: 600 clamp(4rem,14vw,10rem) var(--mono); line-height: .9; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 980px) {
  .hero { min-height: auto; }
  .hero-layout, .about-layout { grid-template-columns: 1fr; }
  .portrait-box { justify-self: start; }
  .research-streams { grid-template-columns: 1fr; }
  .profile-row, .profile-row-wide { grid-template-columns: 1fr 1fr; }
  .evidence-list { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .nav-wrap { grid-template-columns: 1fr auto auto; padding: .65rem 0; }
  .menu-toggle { display: block; }
  .nav-wrap nav { display: none; grid-column: 1 / -1; }
  .nav-wrap nav.open { display: block; }
  .nav-links { display: grid; grid-template-columns: 1fr 1fr; justify-content: stretch; }
  .lang-switcher label { display: none; }
  .works-grid, .projects-grid, .profile-row, .profile-row-wide { grid-template-columns: 1fr; }
  .featured-card { grid-column: auto; }
  .section { padding: 1rem; }
  .hero-layout { gap: 1rem; }
  h1 { line-height: .98; }
  .cv-item { grid-template-columns: 1fr; gap: .2rem; }
}
@media print {
  .site-header, .site-footer, .actions, .skip-link { display: none !important; }
  body { background: #fff; color: #000; }
  main { padding: 0; }
  .section { border: 0; margin: 0; padding: 0; }
  .section::before { display: none; }
  .cv-copy { max-width: none; }
  a { text-decoration: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }