:root {
  --accent: #3050ff;
  --bg: #ffffff;
  --text: #1a1a2e;
  --text-muted: #666;
  --border: #e5e7eb;
  --card-bg: #f9fafb;
  --max-width: 860px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f13;
    --text: #e8e8f0;
    --text-muted: #888;
    --border: #2a2a3a;
    --card-bg: #16161e;
  }
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.navbar { border-bottom: 1px solid var(--border); padding: 0 1.5rem; }
.nav-inner { max-width: var(--max-width); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 56px; }
.nav-brand { font-weight: 600; color: var(--text); font-size: 15px; }
.nav-links { display: flex; gap: 1.5rem; }
.nav-links a { font-size: 14px; color: var(--text-muted); }
.nav-links a:hover, .nav-links a.active { color: var(--accent); text-decoration: none; }
main { max-width: var(--max-width); margin: 0 auto; padding: 2.5rem 1.5rem; }
footer { border-top: 1px solid var(--border); text-align: center; padding: 1.5rem; font-size: 13px; color: var(--text-muted); margin-top: 4rem; }
footer a { color: var(--text-muted); }
.profile { display: grid; grid-template-columns: 160px 1fr; gap: 2.5rem; align-items: start; margin-bottom: 3rem; }
@media (max-width: 600px) { .profile { grid-template-columns: 1fr; } }
.profile-photo { width: 140px; height: 140px; border-radius: 50%; object-fit: cover; border: 3px solid var(--border); }
.profile-photo-placeholder { width: 140px; height: 140px; border-radius: 50%; background: var(--card-bg); border: 3px solid var(--border); display: flex; align-items: center; justify-content: center; font-size: 56px; }
.profile-name { font-size: 1.6rem; font-weight: 600; margin-bottom: 4px; }
.profile-position { color: var(--text-muted); font-size: 15px; margin-bottom: 12px; }
.profile-bio { font-size: 15px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.profile-links { display: flex; gap: 10px; flex-wrap: wrap; }
.profile-links a { font-size: 13px; background: var(--card-bg); border: 1px solid var(--border); padding: 4px 12px; border-radius: 99px; color: var(--text-muted); }
.profile-links a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }
.section { margin-bottom: 3rem; }
.section-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 1rem; padding-bottom: 8px; border-bottom: 2px solid var(--accent); display: inline-block; }
.news-list { list-style: none; }
.news-item { display: flex; gap: 1rem; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.news-date { color: var(--text-muted); flex-shrink: 0; min-width: 90px; }
.pub-list { display: flex; flex-direction: column; gap: 1.25rem; }
.pub-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px; padding: 1rem 1.25rem; }
.pub-title { font-size: 15px; font-weight: 500; margin-bottom: 4px; }
.pub-authors { font-size: 13px; color: var(--text-muted); margin-bottom: 4px; }
.pub-venue { font-size: 13px; color: var(--accent); margin-bottom: 8px; }
.pub-links { display: flex; gap: 8px; }
.pub-links a { font-size: 12px; background: var(--bg); border: 1px solid var(--border); padding: 2px 10px; border-radius: 99px; color: var(--text-muted); }
.pub-links a:hover { color: var(--accent); text-decoration: none; }
.showcase-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
.showcase-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 10px; padding: 1rem; }
.showcase-card:hover { border-color: var(--accent); }
.showcase-title { font-size: 15px; font-weight: 500; margin-bottom: 6px; }
.showcase-desc { font-size: 13px; color: var(--text-muted); line-height: 1.5; margin-bottom: 10px; }
.showcase-tags { display: flex; flex-wrap: wrap; gap: 4px; }
.showcase-tag { font-size: 11px; background: var(--bg); border: 1px solid var(--border); padding: 2px 8px; border-radius: 99px; color: var(--text-muted); }
.interests-list { display: flex; flex-wrap: wrap; gap: 8px; }
.interest-tag { font-size: 13px; background: var(--card-bg); border: 1px solid var(--border); padding: 4px 14px; border-radius: 99px; color: var(--text-muted); }
.edu-list { list-style: none; }
.edu-item { padding: 8px 0; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; font-size: 14px; }
.edu-degree { font-weight: 500; }
.edu-year { color: var(--text-muted); }