:root {
  --bg: #ffffff;
  --surface: #f7f9fc;
  --text: #263746;
  --heading: #172b3a;
  --muted: #667785;
  --accent: #1565c0;
  --accent-dark: #0d4f9c;
  --border: #dfe6ec;
  --max-width: 1120px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Roboto, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.7;
}

img {
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-dark);
}

h1,
h2,
h3 {
  color: var(--heading);
  font-family: Montserrat, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.25;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-inline: 1.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(223, 230, 236, 0.9);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 2px 12px rgba(23, 43, 58, 0.06);
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  min-height: 70px;
  align-items: center;
  justify-content: space-between;
}

.brand {
  color: var(--heading);
  font-family: Montserrat, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  font-size: 0.94rem;
}

.nav-links a {
  position: relative;
  color: #415363;
  padding-block: 0.35rem;
}

.nav-links a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 160ms ease-in-out;
}

.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after {
  transform: scaleX(1);
}

.profile-section {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: clamp(3rem, 7vw, 6rem);
  align-items: start;
  padding-block: 5.5rem;
}

.profile-identity {
  text-align: center;
}

.intro-photo-wrap {
  display: flex;
  justify-content: center;
}

.intro-photo-swap {
  position: relative;
  width: 190px;
  aspect-ratio: 1;
  overflow: hidden;
  border: 5px solid #ffffff;
  border-radius: 50%;
  background: #e7eef5;
  box-shadow: 0 7px 24px rgba(23, 43, 58, 0.17);
}

.intro-photo {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 180ms ease-in-out;
}

.intro-photo-primary {
  opacity: 1;
}

.intro-photo-hover {
  opacity: 0;
}

@media (hover: hover) {
  .intro-photo-swap:hover .intro-photo-primary {
    opacity: 0;
  }

  .intro-photo-swap:hover .intro-photo-hover {
    opacity: 1;
  }
}

.profile-identity h1 {
  margin: 1.5rem 0 0.35rem;
  font-size: clamp(1.85rem, 4vw, 2.2rem);
  letter-spacing: -0.025em;
}

.profile-role {
  margin: 0;
  color: var(--text);
  font-size: 1.03rem;
}

.profile-affiliation {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  margin-top: 1.25rem;
}

.profile-links a,
.publication-links a {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  border: 1px solid #b9cee2;
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  background: #ffffff;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  transition: background 160ms ease-in-out, border-color 160ms ease-in-out;
}

.profile-links a:hover,
.publication-links a:hover {
  border-color: var(--accent);
  background: #edf5fd;
}

.biography h2,
.section-title {
  margin: 0 0 1.35rem;
  font-size: clamp(1.8rem, 4vw, 2.15rem);
  letter-spacing: -0.025em;
}

.biography > p {
  max-width: 760px;
  margin: 0 0 1.05rem;
  font-size: 1.05rem;
}

.academic-details {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 2.5rem;
  margin-top: 2.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1.75rem;
}

.detail-block {
  scroll-margin-top: 7rem;
}

.detail-block h3 {
  margin: 0 0 0.75rem;
  font-size: 1.08rem;
}

.detail-block p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.interest-list {
  margin: 0;
  padding-left: 1.2rem;
}

.interest-list li {
  margin: 0.2rem 0;
}

.interest-list li::marker {
  color: var(--accent);
}

.section-shell {
  scroll-margin-top: 5rem;
  border-block: 1px solid #edf1f5;
  background: var(--surface);
  padding-block: 4.75rem;
}

.publication-card {
  display: grid;
  grid-template-columns: minmax(230px, 320px) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.publication-figure {
  margin: 0;
}

.publication-figure img {
  display: block;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(23, 43, 58, 0.1);
}

.publication-authors {
  margin: 0 0 0.15rem;
  color: var(--muted);
  font-size: 0.93rem;
}

.publication-authors strong {
  color: var(--text);
  font-weight: 600;
}

.publication-venue {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.publication-details h3 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.25rem, 3vw, 1.55rem);
}

.publication-details h3 a {
  color: var(--heading);
}

.publication-details h3 a:hover {
  color: var(--accent);
}

.publication-details > p:last-of-type {
  max-width: 700px;
  margin: 0;
}

.publication-links {
  margin-top: 1rem;
}

.writing-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 4.5rem;
}

.writing-section .section-title {
  margin-bottom: 0.35rem;
}

.writing-section p {
  margin: 0;
  color: var(--muted);
}

.contact-section {
  border-top: 1px solid var(--border);
  padding-block: 4.5rem;
  text-align: center;
}

.contact-section .section-title {
  margin-bottom: 0.45rem;
}

.contact-section p {
  margin: 0;
  color: var(--muted);
}

.contact-email {
  margin-top: 0.65rem !important;
  color: var(--heading) !important;
  font-weight: 600;
  letter-spacing: 0.015em;
}

.text-link {
  flex: 0 0 auto;
  font-weight: 600;
}

.page {
  min-height: calc(100vh - 156px);
  padding-block: 5rem;
}

.page-heading {
  max-width: 720px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.75rem;
}

.page-heading h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(2.2rem, 6vw, 3.25rem);
}

.page-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.empty-state {
  margin-top: 2rem;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: #ffffff;
}

.footer-content {
  display: flex;
  min-height: 86px;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

.footer-content p {
  margin: 0;
}

.post {
  padding-block: 3.5rem;
}

.post h1 {
  margin-bottom: 0.25rem;
}

.post p {
  margin: 1rem 0;
}

blockquote {
  margin: 1.25rem 0;
  border-left: 4px solid var(--accent);
  padding: 0.4rem 0 0.4rem 1.1rem;
  background: #eef5fc;
  color: var(--text);
}

code {
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
  background: #edf2f7;
}

@media (max-width: 820px) {
  .profile-section {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 3rem;
  }

  .academic-details {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 680px) {
  html {
    scroll-padding-top: 8.5rem;
  }

  .nav {
    flex-direction: column;
    gap: 0.35rem;
    padding-block: 0.7rem;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.35rem 1rem;
  }

  .profile-section {
    grid-template-columns: 1fr;
    gap: 3rem;
    padding-block: 3.75rem;
  }

  .profile-identity {
    max-width: 430px;
    margin: 0 auto;
  }

  .biography h2 {
    text-align: center;
  }

  .biography {
    text-align: center;
  }

  .interest-list {
    padding-left: 0;
    list-style-position: inside;
  }

  .section-shell {
    padding-block: 3.75rem;
  }

  .publication-card {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .publication-figure {
    width: 100%;
    max-width: 420px;
  }

  .writing-section {
    flex-direction: column;
    align-items: flex-start;
    padding-block: 3.75rem;
  }

  .contact-section {
    padding-block: 3.75rem;
  }
}

@media (max-width: 420px) {
  .container {
    padding-inline: 1.1rem;
  }

  .nav-links {
    font-size: 0.88rem;
  }

  .intro-photo-swap {
    width: 170px;
  }
}

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

  .intro-photo,
  .nav-links a::after,
  .profile-links a,
  .publication-links a {
    transition: none;
  }
}