:root{
  --bg:#f7f8fb;
  --surface:#ffffff;
  --surface-2:#f2f4f8;
  --text:#1f2937;
  --muted:#6b7280;
  --line:#e5e7eb;
  --primary:#0f766e;
  --primary-dark:#0b5f59;
  --link:#0a66c2;
  --shadow:0 10px 30px rgba(15, 23, 42, 0.08);
  --radius:18px;
}

body.dark{
  --bg:#0b1220;
  --surface:#111827;
  --surface-2:#172033;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --line:#263041;
  --primary:#2dd4bf;
  --primary-dark:#16b4a2;
  --link:#7dd3fc;
  --shadow:0 12px 32px rgba(0, 0, 0, 0.28);
}

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:Arial, Helvetica, sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
}

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

a:hover{
  text-decoration:underline;
}

.topbar{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}

body.dark .topbar{
  background:rgba(11,18,32,.88);
}

.topbar-inner{
  max-width:1200px;
  margin:0 auto;
  padding:14px 20px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:18px;
}

.brand{
  font-size:18px;
  font-weight:800;
  color:var(--text);
}

.nav{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  align-items:center;
}

.nav a{
  color:var(--text);
  font-weight:700;
  font-size:15px;
}

.nav a.active{
  color:var(--primary);
}

.toggle-btn{
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--text);
  border-radius:999px;
  padding:8px 14px;
  cursor:pointer;
  font-weight:700;
}

.wrap{
  max-width:1250px;
  margin:34px auto 70px;
  padding:0 20px;
  display:grid;
  grid-template-columns:340px minmax(0, 1fr);
  gap:40px;
}

.sidebar{
  align-self:start;
  position:sticky;
  top:86px;
}

.panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:22px;
  box-shadow:var(--shadow);
  overflow:hidden;
}

.sidebar-card{
  padding:28px 26px;
}

.avatar{
  width:170px;
  height:170px;
  object-fit:contain;
  background:#fff;
  border-radius:50%;
  display:block;
  margin:0 auto 18px;
  border:5px solid var(--surface-2);
  padding:6px;
}

.name{
  margin:0 0 6px;
  font-size:30px;
  line-height:1.15;
  text-align:center;
}

.role{
  margin:0 0 18px;
  text-align:center;
  color:var(--muted);
  font-size:17px;
}

.side-list{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:16px;
}

.side-item{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:15px;
  min-width:0;
}

.side-item a,
.side-item span{
  line-height:1.4;
}

.icon{
  width:18px;
  height:18px;
  min-width:18px;
  max-width:18px;
  min-height:18px;
  max-height:18px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 18px;
  overflow:hidden;
}

.icon-svg{
  width:18px;
  height:18px;
  min-width:18px;
  max-width:18px;
  min-height:18px;
  max-height:18px;
  display:block;
}

.side-item svg{
  width:18px;
  height:18px;
  min-width:18px;
  max-width:18px;
  min-height:18px;
  max-height:18px;
  display:block;
}

.icon-badge{
  width:18px;
  height:18px;
  min-width:18px;
  max-width:18px;
  min-height:18px;
  max-height:18px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:10px;
  font-weight:700;
  color:#fff;
  line-height:1;
}

.icon-pin{
  background:#6b7280;
}

.icon-tu{
  background:#7c3aed;
}

.content .hero{
  background:linear-gradient(135deg, var(--surface), var(--surface-2));
  border:1px solid var(--line);
  border-radius:24px;
  box-shadow:var(--shadow);
  padding:34px;
  margin-bottom:22px;
}

.hero-tag{
  display:inline-block;
  padding:7px 12px;
  border-radius:999px;
  background:rgba(15,118,110,.11);
  color:var(--primary);
  font-weight:800;
  font-size:13px;
  margin-bottom:14px;
}

body.dark .hero-tag{
  background:rgba(45,212,191,.15);
}

.hero h1{
  margin:0 0 14px;
  font-size:46px;
  line-height:1.1;
}

.lead{
  font-size:18px;
  color:var(--text);
}

.grid-2{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}

.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:22px;
  box-shadow:var(--shadow);
  padding:24px;
  margin-bottom:20px;
}

.card h2{
  margin:0 0 12px;
  font-size:28px;
}

.card h3{
  margin:0 0 10px;
  font-size:21px;
}

.card p{
  margin:0 0 12px;
}

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

ul{
  margin:0;
  padding-left:22px;
}

li{
  margin:8px 0;
}

.pub-list{
  padding-left:22px;
}

.pub-list li{
  margin:14px 0;
}

.pub-journal{
  color:var(--muted);
}

.small-note{
  color:var(--muted);
  font-size:14px;
}

.download{
  display:inline-block;
  padding:10px 16px;
  border-radius:12px;
  background:var(--primary);
  color:#fff;
  font-weight:800;
}

.download:hover{
  background:var(--primary-dark);
  text-decoration:none;
}

.section-title{
  margin:0 0 14px;
  font-size:34px;
}

.footer-space{
  height:30px;
}

@media (max-width:950px){
  .wrap{
    grid-template-columns:1fr;
  }

  .sidebar{
    position:static;
  }

  .grid-2{
    grid-template-columns:1fr;
  }

  .hero h1{
    font-size:36px;
  }
}