:root {
  --bg: #fbfaf6;
  --paper: #ffffff;
  --ink: #1f2937;
  --ink-soft: #374151;
  --muted: #6b7280;
  --faint: #f3f1ec;
  --line: #e6e1d6;
  --line-soft: #ede9df;
  --link: #1d4ed8;
  --link-visited: #6d28d9;
  --accent: #7c2d12;
  --accent-soft: #fdf6ed;
  --shadow: 0 1px 2px rgba(31, 41, 55, 0.04), 0 6px 18px -10px rgba(31, 41, 55, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  background-image:
    radial-gradient(1100px 480px at 12% -120px, #f5efe1 0%, rgba(245, 239, 225, 0) 60%),
    radial-gradient(900px 420px at 105% 8%, #f1ece0 0%, rgba(241, 236, 224, 0) 65%);
  background-attachment: fixed;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.62;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color 120ms ease;
}

a:visited {
  color: var(--link-visited);
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: 0.5rem;
  z-index: 100;
  padding: 0.4rem 0.65rem;
  color: #ffffff;
  background: var(--ink);
  border-radius: 4px;
  transform: translateY(-140%);
}

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

.page {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 0 0.95rem;
  border-bottom: 1px solid var(--line);
}

.site-name {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  font-size: 1.18rem;
  letter-spacing: 0.01em;
}

.site-name:visited {
  color: var(--ink);
}

.topnav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  justify-content: flex-end;
  font-size: 0.94rem;
}

.topnav a {
  color: var(--ink-soft);
  position: relative;
}

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

.topnav a:hover::after {
  transform: scaleX(1);
}

.topnav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

/* Layout */
.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 3.2rem;
  align-items: start;
  padding-top: 2.6rem;
}

/* Profile sidebar */
.profile {
  position: sticky;
  top: 1.5rem;
}

.profile-photo {
  width: 230px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: 50% 34%;
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow);
}

.profile h1 {
  margin: 1.05rem 0 0.05rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.05rem;
  line-height: 1.08;
  letter-spacing: 0;
}

.name-cn {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.role,
.affiliation,
.focus {
  margin: 0.18rem 0;
  color: var(--muted);
}

.role {
  color: var(--ink);
  font-weight: 600;
  font-size: 1rem;
}

.affiliation {
  font-size: 0.96rem;
}

.focus {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--line);
  font-size: 0.92rem;
  line-height: 1.55;
}

.profile-links {
  margin-top: 0.95rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  font-size: 0.93rem;
}

.profile-links span {
  color: var(--muted);
  opacity: 0.7;
}

.profile-links a {
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
  transition: border-color 120ms ease, color 120ms ease;
}

.profile-links a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
  text-decoration: none;
}

/* Content */
.content {
  min-width: 0;
}

section {
  padding: 0 0 2.1rem;
  margin: 0 0 2.1rem;
  border-bottom: 1px solid var(--line);
}

section:last-of-type {
  border-bottom: 0;
}

h2 {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.5rem;
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--ink);
}

h2 .h2-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  font-size: 1.05rem;
  filter: saturate(0.9);
}

.intro p,
section > p {
  margin: 0 0 0.85rem;
}

/* News */
.news-list,
.interest-list,
.plain-list {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.news-list li,
.interest-list li,
.plain-list li {
  margin: 0.45rem 0;
  padding-left: 1.1rem;
  position: relative;
}

.news-list li::before,
.interest-list li::before,
.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.55;
}

.news-list span {
  display: inline-block;
  margin-right: 0.4rem;
  padding: 1px 8px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.note {
  margin: -0.25rem 0 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-style: italic;
}

/* Year heading */
.year-heading {
  margin: 1.6rem 0 0.85rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.year-heading::before,
.year-heading::after {
  content: "";
  flex: 0 0 auto;
}

.year-heading::before {
  width: 16px;
  height: 1px;
  background: var(--accent);
  opacity: 0.5;
}

.year-heading::after {
  flex: 1;
  height: 1px;
  background: var(--line);
}

.year-heading span {
  flex: 0 0 auto;
}

/* Publication card */
.pub-item {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 1.3rem;
  padding: 1.05rem;
  margin: 0.6rem 0;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  transition: box-shadow 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.pub-item:hover {
  box-shadow: var(--shadow);
  border-color: var(--line);
  transform: translateY(-1px);
}

.pub-teaser {
  display: block;
  align-self: start;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: #fff;
  transition: transform 220ms ease;
}

.pub-teaser:hover {
  text-decoration: none;
  transform: scale(1.01);
}

.pub-teaser img {
  width: 100%;
  height: auto;
  display: block;
}

.pub-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.pub-body h4 {
  margin: 0 0 0.1rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.06rem;
  font-weight: 600;
  line-height: 1.36;
  letter-spacing: 0;
  color: var(--ink);
}

.pub-body p {
  margin: 0;
}

.authors {
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.5;
}

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

.venue {
  margin-top: 0.15rem !important;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

/* Conference badges */
.venue-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 0.81rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid;
  white-space: nowrap;
}

.venue-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.78rem;
  color: var(--muted);
  background: var(--faint);
  border: 1px solid var(--line-soft);
  font-weight: 500;
}

.venue-icml {
  background: #fff7ed;
  color: #9a3412;
  border-color: #fed7aa;
}

.venue-iclr {
  background: #eff6ff;
  color: #1e3a8a;
  border-color: #bfdbfe;
}

.venue-aamas {
  background: #f0fdf4;
  color: #14532d;
  border-color: #bbf7d0;
}

.venue-emnlp {
  background: #faf5ff;
  color: #5b21b6;
  border-color: #ddd6fe;
}

.venue-emnlp-rose {
  background: #fff1f2;
  color: #9f1239;
  border-color: #fecdd3;
}

.venue-acl {
  background: #ecfeff;
  color: #155e75;
  border-color: #a5f3fc;
}

.venue-kdd {
  background: #f0fdfa;
  color: #115e59;
  border-color: #99f6e4;
}

.venue-cikm {
  background: #eef2ff;
  color: #312e81;
  border-color: #c7d2fe;
}

.venue-preprint {
  background: #f8fafc;
  color: #475569;
  border-color: #cbd5e1;
}

.summary {
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.pub-body .links {
  margin-top: 0.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  font-size: 0.92rem;
}

.pub-body .links a {
  color: var(--link);
  font-weight: 500;
}

.pub-body .links span {
  color: var(--muted);
  opacity: 0.55;
}

/* Experience entries */
.entry {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 1.1rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--line-soft);
}

.entry:first-of-type {
  border-top: 0;
  padding-top: 0.4rem;
}

.entry > span {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
  padding-top: 0.05rem;
}

.entry h3 {
  margin: 0 0 0.2rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.04rem;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--ink);
}

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

/* Contact links */
#contact .links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.96rem;
}

#contact .links span {
  color: var(--muted);
  opacity: 0.55;
}

/* Footer */
.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 2.4rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
  margin-top: 1.2rem;
}

/* Responsive */
@media (max-width: 900px) {
  .layout {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 2.2rem;
  }

  .profile-photo {
    width: 200px;
  }

  .pub-item {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 1.1rem;
  }
}

@media (max-width: 760px) {
  .page {
    width: min(100% - 28px, 1080px);
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.7rem;
  }

  .topnav {
    justify-content: flex-start;
    gap: 0.95rem;
  }

  .layout {
    grid-template-columns: 1fr;
    gap: 1.8rem;
    padding-top: 1.8rem;
  }

  .profile {
    position: static;
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr);
    column-gap: 1.1rem;
    align-items: start;
  }

  .profile-photo {
    grid-row: span 6;
    width: 140px;
  }

  .profile h1 {
    margin-top: 0;
    font-size: 1.7rem;
  }

  .focus {
    grid-column: 1 / -1;
    margin-top: 0.4rem;
  }

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

  .pub-item {
    grid-template-columns: 1fr;
    gap: 0.85rem;
    padding: 0.95rem;
  }

  .pub-teaser {
    max-width: 240px;
  }

  .entry {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .entry > span {
    font-size: 0.85rem;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 15px;
  }

  .page {
    width: min(100% - 24px, 1080px);
  }

  .profile {
    grid-template-columns: 1fr;
  }

  .profile-photo {
    grid-row: auto;
    width: 100%;
    max-width: 240px;
    aspect-ratio: 1 / 1;
  }

  .profile h1 {
    margin-top: 0.85rem;
    font-size: 1.85rem;
  }

  .footer {
    flex-direction: column;
    gap: 0.4rem;
  }

  h2 {
    font-size: 1.32rem;
  }

  .pub-body h4 {
    font-size: 1rem;
  }
}