:root {
  --ink: #15191e;
  --muted: #5d6670;
  --paper: #f8f7f3;
  --surface: #ffffff;
  --accent: #155e75;
  --accent-dark: #0e4658;
  --line: #dfe2e3;
  --tag: #e5f1f3;
  --shadow: 0 18px 50px rgba(21, 25, 30, 0.08);
  --content: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}
a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { color: var(--accent-dark); }
button, a { -webkit-tap-highlight-color: transparent; }
.container { width: min(calc(100% - 40px), var(--content)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 20; padding: 10px 16px; background: var(--ink); color: #fff; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgba(21,25,30,.08); background: rgba(248,247,243,.92); backdrop-filter: blur(12px); }
.header-inner, .footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; }
.site-name { color: var(--ink); font-size: 1.1rem; font-weight: 750; text-decoration: none; letter-spacing: -.02em; }
nav { display: flex; gap: 28px; }
nav a { color: var(--muted); font-size: .92rem; font-weight: 650; text-decoration: none; }

.hero { display: grid; grid-template-columns: minmax(260px, 420px) 1fr; align-items: center; gap: clamp(50px, 8vw, 110px); min-height: calc(100vh - 72px); padding-block: 80px; }
.portrait { width: 100%; height: auto; border-radius: 0; box-shadow: var(--shadow); background: #e6e4de; }
.eyebrow { margin: 0 0 14px; color: var(--accent); font-size: .76rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.035em; }
h1 { max-width: 720px; margin: 0 0 24px; font-size: clamp(2.8rem, 6vw, 5.7rem); }
h2 { margin: 0; font-size: clamp(2.3rem, 5vw, 4.4rem); }
.hero-copy { max-width: 710px; }
.hero-copy p { color: var(--muted); }
.hero-copy .intro { color: var(--ink); font-size: clamp(1.15rem, 2vw, 1.38rem); }
.cv-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.cv-button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 44px; padding: 9px 18px; border: 1px solid var(--accent); border-radius: 4px; color: var(--accent); font-size: .94rem; font-weight: 700; text-decoration: none; }
.cv-button:hover { color: #fff; background: var(--accent); }
.cv-button:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.contact-row { display: flex; align-items: center; flex-wrap: wrap; gap: 16px 26px; margin-top: 28px; }
.email-line { margin: 0; color: var(--ink) !important; font-size: .96rem; }
.email-line a { font-weight: 700; }
.social-links { display: flex; align-items: center; gap: 12px; }
.social-icon { display: inline-grid; width: 31px; height: 31px; place-items: center; color: var(--accent); }
.social-icon:hover { color: var(--accent-dark); }
.social-icon { text-decoration: none; }
.social-icon .fa-brands { font-size: 25px; }
.research-profile-links { display: flex; flex-wrap: wrap; gap: 12px 26px; margin-top: 26px; }
.research-profile-link { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; font-size: .94rem; font-weight: 700; text-decoration: none; }
.research-profile-link:hover .profile-label { text-decoration: underline; }
.research-profile-link img { display: block; width: 25px; height: 25px; object-fit: contain; }
.social-icon:focus-visible, .research-profile-link:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }

.cv-section { padding-block: 110px; border-top: 1px solid var(--line); }
.cv-group + .cv-group { margin-top: 48px; }
.cv-group h3 { margin: 0 0 14px; padding-bottom: 12px; border-bottom: 2px solid var(--ink); font-size: clamp(1.6rem, 3vw, 2.2rem); }
.cv-entry { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 32px; padding-block: 22px; border-bottom: 1px solid var(--line); }
.cv-entry h4 { margin: 0 0 6px; font-size: 1.15rem; line-height: 1.4; }
.cv-entry p { margin: 0 0 5px; color: var(--muted); }
.cv-entry p:last-child { margin-bottom: 0; }
.cv-entry .cv-date { color: var(--accent); font-size: .92rem; font-weight: 700; }
.cv-entry .cv-organization { color: var(--ink); font-weight: 700; }
.cv-highlights { margin: 10px 0 0; padding-left: 22px; color: var(--muted); }
.cv-highlights li + li { margin-top: 5px; }
.cv-highlights li::marker { color: var(--accent); }
.publications-section { padding-block: 110px; background: var(--surface); }
.section-heading { margin-bottom: 42px; }
.publication-list > .year-heading { margin: 20px 0 14px; padding-bottom: 8px; border-bottom: 2px solid var(--ink); font-size: clamp(1.8rem, 3vw, 2.5rem); }
.publication-list > .year-heading:first-child { margin-top: 0; }
.publication { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 32px; padding: 5px 0; border-bottom: 1px solid var(--line); }
.publication-image img { display: block; width: 100%; height: 150px; object-fit: contain; object-position: center; background: #fff; }
.publication-content p { margin: 0 0 8px; }
.publication-authors { color: var(--muted); font-size: .9rem; }
.publication-title { font-size: 1rem; font-weight: 750; line-height: 1.45; }
.publication-details { color: var(--muted); font-size: .92rem; }
.publication-tag { display: inline-block; margin-left: 7px; padding: 2px 8px; border-radius: 999px; color: var(--accent-dark); background: var(--tag) !important; font-size: .7rem; font-weight: 750; vertical-align: .12em; }
.conference-tag { color: #fff; background: var(--accent) !important; }
.publication-details > .publication-tag:first-child { margin-left: 0; }
.publication-tag + .publication-venue-label { margin-left: 8px; }
.publication-actions { color: var(--line); font-size: .9rem; }
.resource-label { color: var(--muted); }
.publication-actions button, .panel-close { padding: 0; border: 0; color: var(--accent); background: transparent; font: inherit; cursor: pointer; text-decoration: underline; text-underline-offset: .18em; }
.resource-link { display: inline-flex; align-items: center; gap: 4px; margin-left: 10px; font-weight: 700; text-decoration: none; }
.resource-link .resource-label-text { text-decoration: underline; }
.resource-link .ai-doi { font: normal normal normal 14px/1 Academicons; font-size: 1.3em; text-rendering: auto; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
.link-icon { display: inline-grid; width: 1.25em; height: 1.25em; place-items: center; border: 1.5px solid currentColor; border-radius: 3px; font-size: .8em; font-weight: 850; line-height: 1; text-decoration: none; }
.link-icon-text { font-size: .7em; }
.abstract-panel, .bibtex-panel, .video-panel { margin-top: 16px; padding: 18px 20px; border-left: 3px solid var(--accent); background: #f4f7f7; font-size: .9rem; }
.bibtex-panel pre { max-width: 100%; margin: 0; overflow-x: auto; white-space: normal; font-size: .8rem; line-height: 1.25; }
.bibtex-panel pre br { display: block; content: ""; }
.bibtex-actions { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.bibtex-copy { padding: 5px 10px; border: 1px solid var(--accent); border-radius: 4px; color: var(--accent); background: #fff; font: inherit; font-size: .78rem; font-weight: 750; cursor: pointer; }
.bibtex-copy:hover { color: #fff; background: var(--accent); }
.bibtex-copy-status { color: var(--muted); font-size: .78rem; }
.video-shell { width: min(100%, 900px); aspect-ratio: 16 / 9; background: var(--ink); }
.video-shell iframe { display: block; width: 100%; height: 100%; border: 0; }
.video-note { margin: 10px 0 0 !important; color: var(--muted); font-size: .8rem; }
.panel-close-row { margin-top: 12px !important; }

.site-footer { padding-block: 24px; color: #d9e0e2; background: var(--ink); }
.error-page { min-height: calc(100vh - 150px); padding-block: clamp(64px, 12vh, 140px); }
.error-page > p:not(.eyebrow) { max-width: 650px; color: var(--muted); }
.site-footer p { margin: 0; }
.site-footer a { color: #fff; }

@media (max-width: 800px) {
  body { font-size: 16px; }
  .hero { grid-template-columns: 1fr; min-height: auto; padding-block: 54px 80px; }
  .portrait { width: min(72vw, 390px); }
  .cv-entry { grid-template-columns: 150px minmax(0, 1fr); gap: 22px; }
  .publication { grid-template-columns: 150px minmax(0, 1fr); gap: 22px; }
  .publication-image img { height: 110px; }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 28px), var(--content)); }
  .header-inner { min-height: 62px; }
  nav { gap: 14px; }
  nav a:first-child { display: none; }
  .publications-section { padding-block: 72px; }
  .cv-section { padding-block: 72px; }
  .cv-entry { grid-template-columns: 1fr; gap: 8px; }
  .publication { grid-template-columns: 1fr; }
  .publication-image img { width: 100%; height: 170px; }
  .footer-inner { align-items: flex-start; flex-direction: column; justify-content: center; gap: 2px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }