/* === Reset & Base === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --text-primary: #1a1a2e;
  --text-secondary: #555;
  --text-muted: #888;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --bg: #fafafa;
  --bg-card: #fff;
  --border: #e5e7eb;
  --award: #d97706;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* === Container === */
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
}

/* === Header === */
.header {
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.avatar {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-text {
  color: #fff;
  font-size: 2.2rem;
  font-weight: 700;
  display: none;
}

.avatar-fallback .avatar-text {
  display: block;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.name-cn {
  font-weight: 400;
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-left: 0.35rem;
}

.tagline {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-top: 0.4rem;
}

.location {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.2rem;
}

.links {
  display: flex;
  gap: 1.25rem;
  margin-top: 0.75rem;
}

.links a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s;
}

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

/* === Sections === */
.section {
  margin-bottom: 2.25rem;
}

.section h2 {
  font-size: 1.2rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

.section p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* === News === */
.news-list {
  list-style: none;
}

.news-list li {
  padding: 0.5rem 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  margin-bottom: 0.5rem;
}

.news-date {
  font-weight: 600;
  color: var(--accent);
  margin-right: 0.5rem;
}

/* === Timeline === */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 1rem;
}

.timeline-period {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  padding-top: 0.15rem;
  white-space: nowrap;
}

.timeline-content h3 {
  font-size: 1rem;
  font-weight: 600;
}

.timeline-content p {
  margin-top: 0.35rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.org {
  font-weight: 400;
  color: var(--text-muted);
}

.org::before {
  content: "@ ";
}

/* === Experience Highlights === */
.exp-highlights {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.exp-summary {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
  font-style: italic;
}

.exp-block h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

.exp-block ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.exp-block li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding-left: 1rem;
  position: relative;
}

.exp-block li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
}

/* === Publications === */
.pub-stats {
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.pub-stats a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.pub-stats a:hover {
  text-decoration: underline;
}

.pub-year-group {
  margin-bottom: 1.25rem;
}

.pub-year {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  padding-left: 0.25rem;
}

.pub-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.pub-list li {
  padding: 0.65rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  border-left: 3px solid var(--border);
  transition: border-left-color 0.15s, box-shadow 0.15s;
}

.pub-list li:hover {
  border-left-color: var(--accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.pub-title {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.pub-meta {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.pub-meta strong {
  color: var(--text-secondary);
}

.pub-venue {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 500;
  margin-top: 0.25rem;
}

.pub-award {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--award);
  font-weight: 600;
  margin-left: 0.5rem;
  padding: 0.1rem 0.5rem;
  background: #fef3c7;
  border-radius: 4px;
}

.pub-cite {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: 0.75rem;
}

/* === Awards === */
.awards-list {
  list-style: none;
}

.awards-list li {
  padding: 0.35rem 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.awards-list li::before {
  content: "🏆 ";
}

/* === Footer === */
.footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* === Responsive === */
@media (max-width: 640px) {
  .container {
    padding: 2rem 1rem 1.5rem;
  }

  .header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .avatar {
    width: 100px;
    height: 100px;
  }

  h1 {
    font-size: 1.6rem;
  }

  .links {
    justify-content: center;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .timeline-period {
    font-size: 0.8rem;
  }
}