:root {
  color-scheme: light;
  --bg: #f8f7f4;
  --panel: #ffffff;
  --text: #202124;
  --muted: #60656f;
  --line: #ded9d0;
  --accent: #176b65;
  --accent-2: #8a4f24;
  --chip: #edf4f2;
  --shadow: 0 18px 45px rgba(30, 38, 52, 0.08);
  --radius: 8px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #141517;
  --panel: #1d2024;
  --text: #f1eee8;
  --muted: #b7b0a6;
  --line: #34383f;
  --accent: #69b7a8;
  --accent-2: #d19a6c;
  --chip: #24312f;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.25);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 8% 0%, rgba(23, 107, 101, 0.12), transparent 26rem),
    linear-gradient(180deg, var(--bg), color-mix(in srgb, var(--bg) 86%, var(--panel)));
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  min-height: 64px;
  padding: 0 2rem;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(18px);
}

.brand {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
  font-weight: 700;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 1.1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a {
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: var(--text);
  border-color: var(--accent);
}

.theme-toggle {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}

.layout {
  display: grid;
  grid-template-columns: minmax(250px, 320px) minmax(0, 780px);
  gap: 4rem;
  width: min(1180px, calc(100% - 3rem));
  margin: 3.5rem auto 2rem;
  align-items: start;
}

.profile {
  position: sticky;
  top: 94px;
}

.portrait {
  position: relative;
  width: 184px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  margin-bottom: 1.4rem;
  border: 3px solid color-mix(in srgb, var(--panel) 84%, var(--accent));
  border-radius: 50%;
  overflow: hidden;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 18%, transparent), transparent 55%),
    var(--panel);
  box-shadow: var(--shadow);
}

.portrait-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 44% 50%;
  display: block;
}

.portrait span {
  position: absolute;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
}

.profile h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.05;
}

.profile-name {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}

.name-en {
  font-size: clamp(1.38rem, 2vw, 1.72rem);
  font-weight: 700;
  text-align: left;
}

.name-zh {
  font-size: clamp(1.38rem, 2vw, 1.72rem);
  font-weight: 700;
  color: var(--muted);
  text-align: left;
}

.role,
.affiliation,
.previous-affiliation,
.location {
  margin: 0.4rem 0;
  color: var(--muted);
}

.previous-affiliation {
  font-size: 0.96rem;
}

.role {
  color: var(--text);
  font-weight: 650;
}

.location-icon {
  display: inline-block;
  margin-right: 0.15rem;
}

.profile-block {
  margin-top: 2rem;
}

.profile-block h2,
.section-heading h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
}

.profile-block h2 {
  margin-bottom: 0.7rem;
  font-size: 1.05rem;
}

.chips,
.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.chip,
.links a,
.filter {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--chip);
  color: var(--text);
  font-size: 0.88rem;
}

.chip {
  padding: 0.3rem 0.65rem;
}

.links a,
.filter {
  padding: 0.42rem 0.75rem;
}

.links a:hover,
.filter:hover,
.filter.active {
  border-color: var(--accent);
  color: var(--accent);
}

.content {
  min-width: 0;
}

.section {
  scroll-margin-top: 90px;
  padding-bottom: 3rem;
}

.section-heading {
  margin-bottom: 1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
}

.inline-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
}

.inline-heading a {
  color: var(--accent);
  font-size: 0.94rem;
  font-weight: 650;
}

.prose p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.14em;
}

.about-highlight {
  color: #b43a28;
  font-weight: 700;
}

.publication-list,
.news-list,
.cv-list {
  display: grid;
  gap: 1rem;
}

.publication {
  padding: 1.1rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}

.publication h3 {
  margin: 0 0 0.35rem;
  font-size: 1.08rem;
  line-height: 1.35;
}

.meta {
  margin: 0.15rem 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.venue-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem;
}

.publication-inline-link {
  color: var(--accent);
}

.author-highlight {
  text-decoration: underline;
  text-underline-offset: 0.14em;
}

.venue {
  color: var(--accent-2);
  font-weight: 650;
}

.description {
  margin: 0.65rem 0 0;
  color: var(--muted);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.project,
.cv-item {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--panel) 78%, transparent);
}

.project h3,
.cv-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.project p,
.cv-item p {
  margin: 0;
  color: var(--muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.65rem 0 0.75rem;
}

.tag {
  padding: 0.14rem 0.45rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  font-size: 0.78rem;
}

.news-item {
  display: grid;
  grid-template-columns: 5.6rem 1fr;
  gap: 1rem;
  padding-bottom: 0.4rem;
}

.news-date {
  color: var(--accent);
  font-weight: 700;
}

.news-text {
  color: var(--muted);
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.filter {
  cursor: pointer;
}

.simple-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  width: min(1180px, calc(100% - 3rem));
  margin: 0 auto 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.footer a {
  color: var(--accent);
}

.visitor-map-card {
  padding: 1rem 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--panel) 82%, transparent);
}

.visitor-map-intro {
  margin: 0 0 0.85rem;
  color: var(--muted);
}

.visitor-map-content {
  min-height: 140px;
}

.visitor-map-placeholder {
  color: var(--muted);
}

.visitor-map-placeholder a {
  color: var(--accent);
}

@media (max-width: 860px) {
  .site-header {
    grid-template-columns: 1fr auto;
    padding: 0.8rem 1rem;
  }

  .nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
    gap: 0.8rem;
    overflow-x: auto;
    padding-bottom: 0.2rem;
  }

  .layout {
    grid-template-columns: 1fr;
    gap: 2rem;
    width: min(100% - 2rem, 720px);
    margin-top: 2rem;
  }

  .profile {
    position: static;
  }

  .portrait {
    width: 146px;
  }

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

  .footer {
    width: min(100% - 2rem, 720px);
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .site-header {
    min-height: auto;
  }

  .news-item {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .inline-heading {
    align-items: flex-start;
    flex-direction: column;
  }
}