:root {
  --ink: #292f36;
  --text: #4b535b;
  --muted: #7a838c;
  --line: #e5e9ed;
  --blue: #245b91;
  --blue-dark: #18446f;
  --blue-soft: #f2f7fb;
  --blue-line: #bdd2e4;
  --white: #ffffff;
  --page-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--blue);
}

img {
  display: block;
  max-width: 100%;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-shell {
  width: min(var(--page-width), calc(100% - 44px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 62px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
}

.wordmark {
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: stretch;
  gap: 4px;
}

.nav-link {
  position: relative;
  padding: 20px 15px 19px;
  color: #626b73;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.nav-link::after {
  position: absolute;
  right: 15px;
  bottom: 0;
  left: 15px;
  height: 3px;
  content: "";
  background: transparent;
  transform: scaleX(0);
  transition: transform 0.2s ease;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--ink);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  background: var(--blue-line);
  transform: scaleX(1);
}

.nav-link--accent {
  color: var(--blue);
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
}

.layout {
  display: grid;
  grid-template-columns: 205px minmax(0, 1fr);
  gap: 58px;
  padding-top: 48px;
}

.profile-column {
  position: sticky;
  top: 91px;
  align-self: start;
}

.profile-card {
  padding-bottom: 18px;
}

.avatar-placeholder {
  width: 156px;
  height: 156px;
  margin-bottom: 20px;
  border: 1px solid #d7e0e7;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 42%, #fff 0 27%, transparent 28%),
    linear-gradient(145deg, #f8fbfd, #e8f2f8);
  box-shadow: inset 0 0 0 6px #fff;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.profile-card h1 {
  margin: 0;
  color: var(--ink);
  font-size: 29px;
  line-height: 1.04;
  letter-spacing: -0.035em;
}

.profile-role {
  margin: 12px 0 0;
  color: #626b73;
  font-size: 13px;
  line-height: 1.45;
}

.profile-rule {
  height: 1px;
  margin: 20px 0 16px;
  background: var(--line);
}

.profile-facts {
  margin: 0;
}

.profile-facts div {
  margin-bottom: 11px;
}

.profile-facts dt {
  color: #8b949d;
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.profile-facts dd {
  margin: 2px 0 0;
  color: var(--ink);
  font-size: 12px;
  font-weight: 600;
}

.profile-links {
  display: grid;
  gap: 7px;
  margin-top: 20px;
}

.profile-links a,
.profile-link--muted {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: #59636c;
  font-size: 11px;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.profile-links a:hover {
  color: var(--blue);
  text-decoration: underline;
}

.link-icon {
  display: grid;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  place-items: center;
  color: var(--blue);
  border: 1px solid #dbe4eb;
  border-radius: 3px;
  background: #fafcfd;
  font-size: 8px;
  font-weight: 700;
}

.download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  margin-top: 15px;
  padding: 13px 12px;
  color: var(--ink);
  border: 1px solid #dce5eb;
  border-radius: 4px;
  background: #fbfcfd;
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.download-card:hover {
  color: var(--blue-dark);
  border-color: var(--blue-line);
  background: var(--blue-soft);
}

.download-card small {
  display: block;
  margin-bottom: 2px;
  color: #8b949d;
  font-size: 8px;
  letter-spacing: 0.08em;
}

.download-card strong {
  font-size: 11px;
}

.download-arrow {
  color: var(--blue);
  font-size: 16px;
}

.content-column {
  min-width: 0;
}

.section-anchor {
  scroll-margin-top: 88px;
}

.hero {
  max-width: 850px;
  padding: 1px 0 64px;
}

.hero h2,
.section-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: 23px;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.hero h2::after,
.section-heading h2::after {
  display: block;
  width: 34px;
  height: 2px;
  margin-top: 9px;
  content: "";
  background: var(--blue-line);
}

.hero-lede {
  max-width: 810px;
  margin: 20px 0 0;
  color: var(--text);
  font-size: 15px;
  line-height: 1.65;
}

.hero-lede a {
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.research-summary {
  max-width: 810px;
  margin-top: 19px;
  padding: 15px 18px 16px;
  border-left: 3px solid var(--blue-line);
  background: var(--blue-soft);
}

.research-summary h3 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 14px;
}

.research-summary p {
  margin: 0;
  color: #555f68;
  font-size: 13px;
  line-height: 1.65;
}

.research-summary strong {
  color: var(--ink);
}

.section {
  padding: 0 0 66px;
}

.section-heading {
  margin-bottom: 9px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.section-heading--row {
  display: block;
}

.publication-list {
  border-top: 0;
}

.publication-card {
  display: grid;
  grid-template-columns: minmax(210px, 34%) minmax(0, 1fr);
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.publication-media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 155px;
  overflow: visible;
  border: 0;
  background: transparent;
}

.publication-media img {
  width: 100%;
  height: 155px;
  object-fit: cover;
  border: 1px solid #dce2e7;
  border-radius: 3px;
  background: #fff;
  box-shadow: 3px 3px 7px rgba(40, 55, 67, 0.15);
}

.media--ct img {
  object-fit: contain;
  padding: 9px;
}

.media--vidiff img,
.media--anime img,
.media--speed img,
.media--eva img {
  object-fit: contain;
  padding: 6px;
}

.publication-badge {
  position: absolute;
  z-index: 2;
  top: 8px;
  left: -6px;
  padding: 4px 8px;
  color: #fff;
  border-radius: 2px;
  background: var(--blue);
  box-shadow: 0 2px 5px rgba(26, 71, 111, 0.18);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.publication-body {
  padding: 0 0 0 27px;
}

.publication-number {
  display: none;
}

.publication-body h3 {
  max-width: 650px;
  margin: 0;
  color: var(--blue-dark);
  font-size: 16px;
  line-height: 1.4;
}

.publication-body h3 a {
  color: var(--blue-dark);
  text-decoration: none;
}

.publication-body h3 a:hover {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.publication-authors {
  margin: 10px 0 0;
  color: #59636c;
  font-size: 12px;
  line-height: 1.55;
}

.publication-authors strong {
  color: var(--ink);
}

.publication-venue {
  margin: 7px 0 0;
  color: #757f88;
  font-size: 11px;
  line-height: 1.5;
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 9px;
  margin-top: 12px;
}

.publication-links a {
  padding: 3px 7px;
  color: var(--blue-dark);
  border: 1px solid #d7e4ee;
  border-radius: 3px;
  background: #f8fbfd;
  font-size: 10px;
  font-weight: 700;
  text-decoration: none;
}

.publication-links a:hover {
  border-color: var(--blue-line);
  background: var(--blue-soft);
}

.publication-links a span {
  margin-left: 2px;
}

.publication-note {
  margin: 12px 0 0;
  color: #77818a;
  font-size: 10px;
  font-style: italic;
}

.media--speed {
  min-height: 155px;
  border: 1px solid #dce2e7;
  border-radius: 3px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0.75)),
    repeating-linear-gradient(135deg, #dceaf4 0 1px, transparent 1px 12px),
    var(--blue-soft);
  box-shadow: 3px 3px 7px rgba(40, 55, 67, 0.12);
}

.speed-mark {
  display: grid;
  gap: 5px;
  width: 100%;
  padding: 22px;
  color: var(--ink);
}

.speed-mark span {
  color: var(--blue-dark);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.speed-mark small {
  color: #6d7d89;
  font-size: 8px;
  letter-spacing: 0.08em;
}

.media--eva {
  min-height: 155px;
  border: 1px solid #dce2e7;
  border-radius: 3px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.78)),
    repeating-linear-gradient(45deg, #d7e6f1 0 1px, transparent 1px 13px),
    var(--blue-soft);
  box-shadow: 3px 3px 7px rgba(40, 55, 67, 0.12);
}

.eva-mark {
  display: grid;
  gap: 5px;
  width: 100%;
  padding: 22px;
  color: var(--ink);
}

.eva-mark span {
  color: var(--blue-dark);
  font-size: 29px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.eva-mark small {
  max-width: 190px;
  color: #6d7d89;
  font-size: 8px;
  line-height: 1.5;
  letter-spacing: 0.07em;
}

.timeline {
  border-top: 0;
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 24px;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
}

.timeline-date {
  padding-top: 2px;
  color: #7e8891;
  font-size: 11px;
}

.timeline-marker {
  display: none;
}

.timeline-content {
  padding: 0;
}

.timeline-label {
  margin: 0;
  color: #77818a;
  font-size: 11px;
}

.timeline-content h3 {
  margin: 3px 0 0;
  color: var(--ink);
  font-size: 15px;
}

.timeline-content p:last-child {
  max-width: 620px;
  margin: 5px 0 0;
  color: #5d6770;
  font-size: 12px;
}

.education-grid {
  border-top: 0;
}

.education-card,
.education-card--featured {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  min-height: 0;
  padding: 19px 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.education-date {
  grid-row: span 3;
  margin: 2px 24px 0 0;
  color: #7e8891;
  font-size: 11px;
}

.education-card h3 {
  margin: 0;
  color: var(--ink);
  font-size: 15px;
}

.education-card p:not(.education-date) {
  margin: 3px 0 0;
  color: #5d6770;
  font-size: 12px;
}

.education-card span {
  display: block;
  margin-top: 4px;
  color: var(--blue);
  font-size: 11px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0 31px;
  color: #9199a0;
  border-top: 1px solid var(--line);
  font-size: 10px;
}

.site-footer a {
  color: var(--blue);
  text-decoration: none;
}

@media (max-width: 900px) {
  .site-shell {
    width: min(100% - 34px, 780px);
  }

  .layout {
    grid-template-columns: 185px minmax(0, 1fr);
    gap: 40px;
  }

  .avatar-placeholder {
    width: 140px;
    height: 140px;
  }

  .publication-card {
    grid-template-columns: minmax(180px, 35%) minmax(0, 1fr);
  }
}

@media (max-width: 700px) {
  .site-shell {
    width: min(100% - 28px, 620px);
  }

  .topbar {
    min-height: 56px;
  }

  .menu-toggle {
    display: grid;
    gap: 4px;
    width: 36px;
    height: 32px;
    place-content: center;
    padding: 0;
    cursor: pointer;
  }

  .menu-toggle span:not(.sr-only) {
    display: block;
    width: 17px;
    height: 1px;
    background: var(--ink);
  }

  .site-nav {
    position: absolute;
    top: 57px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 7px 0;
    border-bottom: 1px solid var(--line);
    background: var(--white);
  }

  .site-nav.is-open {
    display: flex;
  }

  .nav-link {
    padding: 9px 2px;
  }

  .nav-link::after {
    display: none;
  }

  .layout {
    display: block;
    padding-top: 33px;
  }

  .profile-column {
    position: static;
    padding-bottom: 58px;
  }

  .profile-card {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr);
    column-gap: 16px;
    align-items: start;
  }

  .avatar-placeholder {
    grid-row: span 2;
    width: 82px;
    height: 82px;
    margin: 0;
  }

  .profile-card .eyebrow {
    margin-top: 2px;
  }

  .profile-card h1 {
    font-size: 27px;
  }

  .profile-role {
    margin-top: 7px;
  }

  .profile-rule,
  .profile-facts,
  .profile-links {
    grid-column: 1 / -1;
  }

  .profile-rule {
    margin: 18px 0 15px;
  }

  .profile-facts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .profile-facts div {
    margin: 0;
  }

  .profile-links {
    margin-top: 18px;
  }

  .hero {
    padding-bottom: 54px;
  }

  .section {
    padding-bottom: 54px;
  }

  .publication-card {
    display: block;
  }

  .publication-media,
  .media--speed,
  .media--eva {
    width: 100%;
    min-height: 175px;
  }

  .publication-media img {
    height: 175px;
  }

  .publication-body {
    padding: 17px 0 0;
  }

  .timeline-item,
  .education-card,
  .education-card--featured {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 13px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }
}

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