:root {
  --ink: #202832;
  --muted: #6c7683;
  --accent: #3974d4;
  --accent-dark: #2b61ba;
  --accent-soft: #f1f5fd;
  --line: #e7ebef;
  --surface: #f8fafc;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }
strong, b { font-weight: 600; }
img { display: block; max-width: 100%; }
p { margin: 0 0 14px; }
figure { margin: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 3px;
}

.page-shell {
  width: min(940px, calc(100% - 64px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 10;
  padding: 8px 14px;
  background: var(--ink);
  color: #fff;
}
.skip-link:focus { top: 12px; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 5;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 60px;
}
.nav-name {
  flex-shrink: 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.025em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 25px;
}
.nav-links a { color: var(--muted); font-size: 12px; font-weight: 500; }
.nav-links a:hover { color: var(--accent); text-decoration: none; }

.profile-section {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  align-items: start;
  gap: 44px;
  padding: 52px 0 42px;
}
.profile-photo {
  width: 190px;
  height: 244px;
  object-fit: cover;
  border-radius: 9px;
}
.profile-section h1 {
  margin: -7px 0 3px;
  font-size: 37px;
  line-height: 1.3;
  letter-spacing: -0.045em;
  font-weight: 600;
}
.profile-role { margin-bottom: 20px; color: var(--muted); font-size: 14px; }
.profile-bio p { line-height: 1.75; }
.profile-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.profile-links a, .profile-links .email-copy, .publication-links a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: #eef0f7;
  color: #212529;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.7;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.profile-links .email-copy { cursor: pointer; font-family: inherit; }
.profile-links .fa { color: inherit; font-size: 13px; }
.profile-links a:hover, .profile-links .email-copy:hover, .publication-links a:hover {
  color: var(--ink);
  background: #e2e6ef;
  text-decoration: none;
}

.home-section { padding: 30px 0; border-top: 1px solid var(--line); }
.section-heading {
  margin: 0 0 22px;
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: -0.025em;
  font-weight: 600;
}

.news-list { margin: 0; padding: 0; list-style: none; }
.news-list li { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 18px; }
.news-list li + li { margin-top: 12px; }
.news-date { padding-top: 1px; color: var(--muted); font-size: 12px; font-weight: 500; }
.news-content { font-size: 14px; }

.publications-section { --publication-height: 160px; padding-bottom: 34px; }
.publication-year-group + .publication-year-group { margin-top: 40px; }
.publication-year {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 20px;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
}
.publication-year::after { content: ""; height: 1px; flex: 1; background: var(--line); }
.publication { display: grid; grid-template-columns: 1fr; }
.publication-with-media { grid-template-columns: 280px minmax(0, 1fr); gap: 28px; }
.publication + .publication { margin-top: 36px; }
.publication-media {
  position: relative;
  height: var(--publication-height);
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 0 12px -2px #eaeaea;
  align-self: start;
}
.publication-media img, .publication-media video, .publication-media svg { display: block; width: 100%; height: 100%; object-fit: contain; border-radius: 12px; }
.publication-content { display: flex; flex-direction: column; }
.publication-content > * { flex-shrink: 0; }
.video-toggle {
  position: absolute;
  right: 6px;
  bottom: 6px;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(32, 40, 50, 0.8);
  color: #fff;
  cursor: pointer;
  opacity: 0;
}
.video-toggle[hidden] { display: none; }
.video-toggle .fa { font-size: 10px; }
.publication-media:hover .video-toggle, .video-toggle:focus-visible { opacity: 1; }
.publication-title { margin: 0 0 8px; font-size: 15px; line-height: 1.5; font-weight: 600; }
.publication-authors { margin-bottom: 9px; color: var(--muted); font-size: 12.5px; line-height: 1.7; }
.publication-authors b { color: var(--ink); }
.publication-venues { display: flex; flex-direction: column; gap: 4px; margin-bottom: 8px; }
.publication-venue {
  color: var(--ink);
  font-size: 12.5px;
  font-style: italic;
  font-weight: 500;
  line-height: 1.6;
}
.publication-venue + .publication-venue { color: var(--muted); font-size: 11.5px; font-style: normal; font-weight: 400; }
.publication-note { color: var(--muted); font-size: 11.5px; font-weight: 400; }
.publication-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 0; }
.publication-links .fa { font-size: 11px; }
.publication-links svg { width: 13px; height: 13px; flex-shrink: 0; fill: currentColor; }

.background-grid { display: grid; grid-template-columns: 1fr 1fr; column-gap: 44px; }
.record + .record { margin-top: 24px; }
.record-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 14px; }
.record-title { margin: 0 0 4px; font-size: 13px; line-height: 1.6; font-weight: 600; }
.record-date { flex-shrink: 0; color: var(--muted); font-size: 10.5px; }
.record-detail { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.7; }

@media (max-width: 800px) {
  .profile-section { grid-template-columns: 160px minmax(0, 1fr); gap: 30px; }
  .profile-photo { width: 160px; height: 214px; }
  .profile-section h1 { font-size: 32px; }
  .nav-links { gap: 17px; }
  .background-grid { grid-template-columns: 1fr; }
  .record-title { font-size: 14px; }
  .record-date { font-size: 12px; }
  .publication-with-media { grid-template-columns: 1fr; gap: 18px; }
  .publication-media { height: auto; aspect-ratio: 16 / 9; }
}

@media (max-width: 580px) {
  html { scroll-padding-top: 108px; }
  body { font-size: 14px; }
  .page-shell { width: calc(100% - 40px); }
  .nav-inner { flex-direction: column; align-items: flex-start; gap: 5px; padding-block: 11px; }
  .nav-links { width: 100%; gap: 20px; overflow-x: auto; padding-block: 3px; }
  .nav-links a { flex-shrink: 0; font-size: 11px; }
  .profile-section { display: flex; flex-direction: column; gap: 25px; padding: 32px 0; }
  .profile-photo { width: 132px; height: 162px; }
  .profile-section h1 { margin-top: 0; font-size: 31px; }
  .profile-role { margin-bottom: 18px; }
  .profile-bio p { line-height: 1.75; }
  .home-section { padding-block: 26px; }
  .section-heading { font-size: 20px; margin-bottom: 20px; }
  .news-list li { grid-template-columns: 76px minmax(0, 1fr); gap: 12px; }
  .news-date { font-size: 11px; }
  .news-content { font-size: 13px; }
  .publication-title { font-size: 14px; }
  .publication-authors { font-size: 12px; }
  .record-heading { flex-direction: column; gap: 0; margin-bottom: 5px; }
  .record-title { margin-bottom: 0; }
  .record-date { font-size: 11px; }
}

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

@media (hover: none) {
  .video-toggle { opacity: 1; }
}