:root {
  --paper: #f4f0e9;
  --paper-deep: #e8e1d7;
  --surface: #fffdf9;
  --ink: #1c1b1a;
  --ink-soft: #625d57;
  --line: #d8d0c5;
  --accent: #98546f;
  --accent-deep: #71384f;
  --accent-pale: #ead9df;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 84% 8%, rgba(152, 84, 111, 0.08), transparent 24rem),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.modal-open {
  overflow: hidden;
}

::selection {
  background: var(--accent-pale);
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration-color: rgba(152, 84, 111, 0.55);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent-deep);
  text-decoration-color: currentColor;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 0.55rem 0.8rem;
  background: var(--ink);
  color: white;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid transparent;
  background: rgba(244, 240, 233, 0.88);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  transition: border-color 180ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: rgba(216, 208, 197, 0.85);
}

.header-inner {
  display: flex;
  width: min(calc(100% - 64px), var(--max-width));
  min-height: 62px;
  margin: 0 auto;
  align-items: center;
  justify-content: flex-end;
  gap: 2rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.1rem, 2.5vw, 2rem);
}

.site-nav a {
  position: relative;
  color: var(--ink-soft);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -0.45rem;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.hero {
  display: grid;
  width: min(calc(100% - 64px), var(--max-width));
  min-height: 305px;
  margin: 0 auto;
  padding: 1rem 0;
  align-items: center;
  grid-template-columns: minmax(0, 1fr) 174px;
  gap: clamp(2.5rem, 6vw, 5rem);
}

.hero-copy {
  align-self: center;
}

.modal-kicker {
  margin: 0 0 0.85rem;
  color: var(--accent-deep);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.65rem, 4.2vw, 3.45rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.92;
}

.preferred-name {
  display: inline;
  margin-left: 0.2em;
  color: var(--accent);
  font-size: 0.42em;
  font-style: italic;
  letter-spacing: -0.025em;
}

.hero-intro {
  max-width: 620px;
  margin: 0.9rem 0 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1rem, 1.35vw, 1.14rem);
  line-height: 1.45;
  text-align: justify;
  text-align-last: left;
  text-justify: inter-word;
}

.marker-highlight {
  position: relative;
  z-index: 0;
  display: inline-block;
  padding: 0 0.08em;
  color: var(--ink);
  white-space: nowrap;
}

.marker-highlight::before {
  position: absolute;
  z-index: -1;
  right: -0.08em;
  bottom: 0.08em;
  left: -0.08em;
  height: 0.62em;
  background: rgba(231, 192, 54, 0.34);
  clip-path: polygon(1% 18%, 99% 3%, 97% 84%, 3% 100%);
  content: "";
  transform: rotate(-0.7deg);
}

.marker-highlight + .marker-highlight::before {
  clip-path: polygon(2% 6%, 98% 17%, 100% 91%, 1% 80%);
  transform: rotate(0.55deg);
}

.contact-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.contact-link {
  display: inline-flex;
  min-height: 37px;
  padding: 0.52rem 0.85rem;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 249, 0.5);
  color: var(--ink);
  font: inherit;
  font-size: 0.69rem;
  font-weight: 650;
  letter-spacing: 0.05em;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    border-color 160ms ease,
    background-color 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.contact-link svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
}

.contact-link:hover {
  border-color: var(--accent);
  background: var(--surface);
  color: var(--accent-deep);
  transform: translateY(-2px);
}

.contact-button {
  cursor: pointer;
}

.email-address {
  display: inline-block;
  margin-top: 0.65rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1rem;
}

.portrait-wrap {
  position: relative;
  margin: 0;
  padding: 11px 11px 0;
  background: var(--surface);
  box-shadow: 0 22px 70px rgba(49, 36, 40, 0.11);
}

.portrait {
  width: 100%;
  height: 200px;
  aspect-ratio: 0.79;
  object-fit: cover;
  object-position: 50% 36%;
  filter: saturate(0.84) contrast(1.02);
}

.portrait-wrap figcaption {
  padding: 0.55rem 0.15rem 0.65rem;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 0.76rem;
  font-style: italic;
}

.content-section {
  width: min(calc(100% - 64px), var(--max-width));
  margin: 0 auto;
  padding: clamp(1.45rem, 2.4vw, 1.9rem) 0;
  border-top: 1px solid var(--line);
}

#education {
  padding-bottom: 1rem;
  padding-top: 3rem;
}

#publications {
  border-top: 0;
  padding-top: 1.5rem;
}

.section-content > h2 {
  max-width: 750px;
  margin: 0 0 clamp(0.75rem, 1.5vw, 1rem);
  font-family: var(--serif);
  font-size: clamp(1.6rem, 2.3vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.timeline {
  border-top: 1px solid var(--ink);
}

.timeline-entry {
  display: grid;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
  grid-template-columns: 180px minmax(0, 1fr) 200px;
  gap: 1.5rem;
}

.timeline-date {
  display: flex;
  color: var(--accent-deep);
  font-family: var(--serif);
  font-size: 1rem;
  font-style: italic;
  font-variant-numeric: tabular-nums;
  font-weight: 400;
  letter-spacing: 0.01em;
  white-space: nowrap;
  flex-direction: row;
  gap: 0.35rem;
}

.timeline-body h3,
.publication-copy h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
}

.timeline-body h3 {
  font-size: clamp(1.15rem, 1.7vw, 1.4rem);
}

.timeline-body p {
  margin: 0.12rem 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.timeline-body .degree {
  margin-top: 0.2rem;
  color: var(--ink);
  font-size: 0.94rem;
}

.education-logo {
  height: auto;
  max-height: 80px;
  margin-left: auto;
  mix-blend-mode: multiply;
  object-fit: contain;
  object-position: right center;
}

.cityu-logo {
  width: 190px;
}

.nju-logo {
  width: 70px;
}

.publication {
  display: grid;
  position: relative;
  overflow: hidden;
  padding: 0.95rem;
  border: 1px solid var(--line);
  background: rgba(255, 253, 249, 0.65);
  grid-template-columns: minmax(260px, 0.85fr) minmax(0, 1.6fr);
  gap: clamp(1.25rem, 2.5vw, 2rem);
}

.featured-publication {
  border-color: rgba(152, 84, 111, 0.42);
  background:
    linear-gradient(112deg, rgba(234, 217, 223, 0.42), transparent 45%),
    rgba(255, 253, 249, 0.78);
  box-shadow: 0 18px 48px rgba(113, 56, 79, 0.08);
}

.featured-publication::after {
  position: absolute;
  top: 0;
  right: 0;
  width: 88px;
  height: 3px;
  background: var(--accent);
  content: "";
}

.publication-media-link {
  position: relative;
  display: block;
  align-self: start;
  overflow: hidden;
  margin: 0;
  background: transparent;
  line-height: 0;
}

.publication-video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 300ms ease, opacity 300ms ease;
}

.publication-media-link:hover .publication-video {
  transform: scale(1.025);
}

.publication-copy {
  align-self: center;
}

.publication-meta {
  display: flex;
  margin: 0 0 0.5rem;
  align-items: center;
  gap: 0.65rem;
}

.venue-badge {
  display: inline-flex;
  padding: 0.34rem 0.58rem;
  align-items: center;
  border: 1px solid var(--accent);
  background: var(--accent-deep);
  color: var(--surface);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1;
  text-transform: uppercase;
}

.publication-type {
  color: var(--accent-deep);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.publication-copy h3 {
  font-size: clamp(1.25rem, 1.9vw, 1.55rem);
  letter-spacing: -0.025em;
  line-height: 1.14;
}

.authors {
  margin: 0.45rem 0 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 0.79rem;
  line-height: 1.42;
}

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

.author-note {
  margin: 0.3rem 0 0;
  color: var(--ink-soft);
  font-size: 0.7rem;
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-top: 0.55rem;
}

.publication-links a {
  color: var(--accent-deep);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.publication-links a span {
  display: inline-block;
  transition: transform 150ms ease;
}

.publication-links a:hover span {
  transform: translate(2px, -2px);
}

.honors-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 4vw, 3.5rem);
}

.honors-group > h3 {
  margin: 0;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--ink);
  color: var(--accent-deep);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.honor-item {
  display: grid;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 1fr auto;
  gap: 1rem;
}

.honor-item h4 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.3;
}

.honor-item p {
  margin: 0.3rem 0 0;
  color: var(--ink-soft);
  font-size: 0.8rem;
  line-height: 1.5;
}

.honor-item .honor-year {
  margin: 0;
  color: var(--accent-deep);
  font-family: var(--serif);
  font-size: 0.85rem;
  font-style: italic;
  white-space: nowrap;
}

.modal[hidden] {
  display: none;
}

.modal {
  position: fixed;
  z-index: 50;
  inset: 0;
  display: grid;
  padding: 24px;
  place-items: center;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(25, 20, 22, 0.72);
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
  animation: fade-in 180ms ease both;
}

.modal-dialog {
  position: relative;
  width: min(92vw, 450px);
  max-height: calc(100vh - 48px);
  overflow: auto;
  padding: clamp(1.7rem, 5vw, 2.5rem);
  background: var(--surface);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.28);
  animation: modal-in 220ms ease both;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: grid;
  width: 38px;
  height: 38px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-size: 1.45rem;
  line-height: 1;
}

.modal-kicker {
  margin-bottom: 0.4rem;
}

.modal-dialog h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 2.4rem;
  font-weight: 400;
}

.modal-dialog > p:not(.modal-kicker) {
  margin: 0.45rem 3rem 1.4rem 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.wechat-qr {
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
}

@media (max-width: 860px) {
  .hero {
    min-height: auto;
    grid-template-columns: minmax(0, 1fr) 160px;
    gap: 3rem;
  }

  .hero h1 {
    font-size: clamp(2.65rem, 6vw, 3.5rem);
  }

  .publication {
    grid-template-columns: minmax(230px, 0.9fr) minmax(0, 1.35fr);
    gap: 1.5rem;
  }
}

@media (max-width: 700px) {
  html {
    scroll-padding-top: 62px;
  }

  .header-inner,
  .hero,
  .content-section {
    width: min(calc(100% - 36px), var(--max-width));
  }

  .header-inner {
    min-height: 62px;
  }

  .site-nav {
    gap: 1rem;
  }

  .site-nav a {
    font-size: 0.62rem;
  }

  .hero {
    position: relative;
    display: block;
    min-height: 330px;
    padding: 0.95rem 0 1rem;
  }

  .hero-copy {
    position: relative;
    z-index: 1;
  }

  .portrait-wrap {
    position: absolute;
    top: 5.7rem;
    right: 0;
    width: 80px;
    padding: 6px 6px 0;
    box-shadow: 0 12px 36px rgba(49, 36, 40, 0.1);
  }

  .portrait {
    height: 108px;
  }

  .portrait-wrap figcaption {
    display: none;
  }

  .hero h1 {
    font-size: clamp(2.35rem, 10.5vw, 2.8rem);
  }

  .hero-intro {
    max-width: calc(100% - 96px);
    margin-top: 1rem;
    font-size: 0.9rem;
    line-height: 1.4;
  }

  .contact-list {
    margin-top: 0.8rem;
  }

  .content-section {
    display: block;
    padding: 1.1rem 0;
  }

  #education {
    padding-bottom: 1rem;
    padding-top: 1.6rem;
  }

  #publications {
    padding-top: 1.1rem;
  }

  .section-content > h2 {
    margin-bottom: 0.65rem;
    font-size: clamp(1.55rem, 7vw, 1.9rem);
  }

  .timeline-entry {
    padding: 0.72rem 0;
    align-items: center;
    grid-template-columns: minmax(0, 1fr) 110px;
    gap: 0.3rem;
  }

  .timeline-date {
    grid-column: 1 / -1;
    flex-direction: row;
    gap: 0.35rem;
  }

  .education-logo {
    grid-column: 2;
    grid-row: 2;
    max-height: 58px;
  }

  .cityu-logo {
    width: 110px;
  }

  .nju-logo {
    width: 52px;
  }

  .publication {
    padding: 0.8rem;
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .publication-media-link {
    width: 100%;
    margin: 0;
  }

  .publication-copy {
    padding: 0;
  }

  .venue-badge,
  .publication-type {
    font-size: 0.6rem;
  }

  .publication-copy h3 {
    font-size: 1.08rem;
  }

  .authors {
    font-size: 0.68rem;
    line-height: 1.38;
  }

  .author-note {
    font-size: 0.62rem;
  }

  .publication-links {
    gap: 0.75rem;
  }

  .publication-links a {
    font-size: 0.65rem;
  }

  .honors-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 430px) {
  .contact-link {
    min-height: 40px;
    padding: 0.58rem 0.78rem;
    font-size: 0.68rem;
  }

  .honor-item {
    grid-template-columns: 1fr;
    gap: 0.55rem;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}