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

:root {
  --text: #333;
  --text-light: #666;
  --accent: #2a7ae2;
  --bg: #fff;
  --border: #e0e0e0;
}

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

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

a:hover {
  text-decoration: underline;
}

/* ===== Navbar ===== */
.navbar {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 28px;
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
}

.nav-logo.active {
  color: var(--accent);
}

.nav-link {
  font-size: 0.95rem;
  color: var(--text-light);
}

.nav-link:hover {
  color: var(--text);
  text-decoration: none;
}

.lang-toggle {
  margin-left: auto;
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text-light);
  font-size: 0.8rem;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.2s;
}

.lang-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== Layout ===== */
.layout {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: flex;
  gap: 64px;
}

/* ===== Sidebar ===== */
.sidebar {
  width: 220px;
  flex-shrink: 0;
}

.avatar {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin-bottom: 20px;
}

.name {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.3;
}

.name-zh {
  font-size: 0.95rem;
  color: var(--text-light);
  margin-bottom: 4px;
}

.tagline {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 24px;
}

.info-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.info-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-light);
}

.info-list svg {
  flex-shrink: 0;
  color: var(--text-light);
}

.info-list a {
  color: var(--text-light);
}

.info-list a:hover {
  color: var(--accent);
}

/* ===== Content ===== */
.content {
  flex: 1;
  min-width: 0;
}

.content section {
  margin-bottom: 36px;
}

.content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0 16px;
}

.content p {
  font-size: 0.95rem;
  color: var(--text-light);
  display: inline;
}

.highlight {
  font-weight: 600;
  color: var(--text);
}

/* ===== Lists ===== */
.bullet-list {
  list-style: disc;
  padding-left: 20px;
}

.bullet-list li {
  font-size: 0.93rem;
  color: var(--text-light);
  margin-bottom: 6px;
}

/* ===== Publications ===== */
.pub-list {
  list-style: none;
}

.pub-list li {
  font-size: 0.93rem;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.6;
}

.pub-tag {
  display: inline-block;
  background: #e8f0fe;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 3px;
  margin-right: 4px;
  vertical-align: middle;
}

.pub-authors {
  display: block;
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 2px;
}

.pub-venue {
  font-size: 0.85rem;
  color: var(--text-light);
  font-style: italic;
}

/* ===== Mobile ===== */
@media (max-width: 700px) {
  .navbar {
    padding: 16px 20px;
    gap: 16px;
  }

  .nav-logo {
    font-size: 1.1rem;
  }

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

  .lang-toggle {
    padding: 3px 10px;
    font-size: 0.75rem;
  }

  .layout {
    flex-direction: column;
    gap: 32px;
    padding: 28px 20px 60px;
  }

  .sidebar {
    width: 100%;
    text-align: center;
  }

  .avatar {
    margin: 0 auto 16px;
    width: 120px;
    height: 120px;
  }

  .name {
    font-size: 1.2rem;
  }

  .info-list {
    align-items: center;
  }

  .content h2 {
    font-size: 1.25rem;
  }

  .content p,
  .bullet-list li,
  .pub-list li {
    font-size: 0.88rem;
  }

  .pub-authors,
  .pub-venue {
    font-size: 0.8rem;
  }
}