:root{
  --bg: #0b0d10;
  --panel: #11151b;
  --panel-2:#0f1318;
  --text: #e8eef6;
  --muted: #aab6c5;
  --border: rgba(255,255,255,.08);
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 16px;
  --max: 1020px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1000px 600px at 20% -10%, rgba(120, 165, 255, .15), transparent 60%),
              radial-gradient(900px 500px at 110% 30%, rgba(164, 255, 210, .10), transparent 55%),
              var(--bg);
  line-height:1.55;
}

.container{max-width:var(--max); margin:0 auto; padding: 0 20px;}
.section{padding: 64px 0;}
.section-title{
  margin:0 0 18px 0;
  font-size: 22px;
  letter-spacing: .2px;
}

a{
  color: #ffffff;             
  text-decoration: underline;  
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
a:hover{opacity:.9}

code{
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 8px;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:auto;
  width:1px;height:1px;
  overflow:hidden;
}
.skip-link:focus{
  position:fixed;
  left:20px;
  top:20px;
  width:auto;height:auto;
  padding:10px 12px;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius: 10px;
  z-index:1000;
}

.site-header{
  position: sticky;
  top:0;
  z-index: 999;
  backdrop-filter: blur(10px);
  background: rgba(11,13,16,.65);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 0;
  gap: 14px;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  text-decoration:none;
}
.brand-mark{
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display:grid;
  place-items:center;
  font-weight: 700;
  background: linear-gradient(135deg, rgba(120,165,255,.22), rgba(164,255,210,.16));
  border:1px solid var(--border);
}
.brand-text{
  font-weight: 650;
  letter-spacing: .2px;
}

.nav{display:flex; align-items:center; gap: 10px;}
.nav-list{
  display:flex;
  list-style:none;
  padding:0;
  margin:0;
  gap: 16px;
}
.nav-list a{
  text-decoration: none; 
  color: var(--text);
  opacity: .9;
}
.nav-list a:hover{opacity:1; text-decoration: underline; text-underline-offset: 6px;}

.nav-toggle{
  display:none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 10px;
  color: var(--text);
}
.nav-toggle-lines{
  display:block;
  width: 18px;
  height: 2px;
  background: var(--text);
  position: relative;
}
.nav-toggle-lines::before,
.nav-toggle-lines::after{
  content:"";
  position:absolute;
  left:0;
  width: 18px;
  height:2px;
  background: var(--text);
}
.nav-toggle-lines::before{top:-6px}
.nav-toggle-lines::after{top:6px}

.hero{padding: 56px 0 18px 0;}
.hero-inner{
  display:grid;
  grid-template-columns: 1.3fr .9fr;
  gap: 22px;
  align-items: start;
}
.hero-title{margin:0; font-size: 42px; letter-spacing:-.5px;}
.hero-subtitle{margin:8px 0 14px 0; color: var(--muted); font-weight: 500;}
.hero-blurb{margin:0 0 16px 0; color: var(--text); opacity:.95; max-width: 60ch;}
.hero-cta{display:flex; gap: 10px; margin: 18px 0 14px 0; flex-wrap: wrap;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  text-decoration:none;
  font-weight: 600;
}
.btn:hover{background: rgba(255,255,255,.09)}
.btn-ghost{
  background: transparent;
}
.hero-links{color: var(--muted); font-size: 14px;}
.hero-links a{color:#fff; text-decoration: underline;}
.sep{opacity:.5; margin: 0 6px;}

.profile-card{
  margin:0;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  box-shadow: var(--shadow);
  overflow:hidden;
}
.avatar{
  width: 100%;
  height: auto;
  display:block;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
}
.profile-meta{padding: 14px 14px 16px 14px;}
.meta-row{display:flex; justify-content:space-between; gap: 12px; padding: 8px 0; border-top: 1px dashed rgba(255,255,255,.08);}
.meta-row:first-child{border-top: 0;}
.meta-k{color: var(--muted); font-size: 13px;}
.meta-v{font-weight: 600; font-size: 13px;}
.meta-v a{color:#fff; text-decoration: underline;}

.grid-2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.card{
  border: 1px solid var(--border);
  background: rgba(17,21,27,.7);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 10px 25px rgba(0,0,0,.18);
}
.card-title{margin: 0 0 10px 0; font-size: 16px;}
.muted{color: var(--muted); margin-top: 10px;}

.pill-list{
  list-style:none;
  padding:0;
  margin: 10px 0 0 0;
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
}
.pill-list li{
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  font-size: 13px;
  color: var(--text);
}

.stack{display:flex; flex-direction:column; gap: 14px;}
.project-head{display:flex; align-items:center; justify-content:space-between; gap: 10px; flex-wrap:wrap;}
.project-title{margin:0; font-size: 18px;}
.tag{
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(120,165,255,.12);
}
.tag-secondary{background: rgba(164,255,210,.10);}

.project-links{margin-top: 10px; color: var(--muted); font-size: 14px;}
.project-links a{color:#fff; text-decoration: underline;}

.pub-list{display:flex; flex-direction:column; gap: 12px; margin-top: 12px;}
.pub-meta{display:flex; gap: 10px; align-items:center; color: var(--muted); font-size: 13px; margin-bottom: 8px;}
.pub-year, .pub-venue{
  padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,.04);
}
.pub-title{margin:0 0 6px 0; font-size: 16px;}
.pub-authors{margin:0 0 10px 0; color: var(--text); opacity:.95;}
.pub-links{color: var(--muted); font-size: 14px;}
.pub-links a{color:#fff; text-decoration: underline;}

.timeline{
  list-style:none;
  padding:0;
  margin:0;
  display:flex;
  flex-direction:column;
  gap: 10px;
}
.timeline li{
  display:grid;
  grid-template-columns: 56px 14px 1fr;
  align-items:start;
  gap: 10px;
}
.t-date{color: var(--muted); font-weight: 600;}
.t-dot{
  width: 10px; height: 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(120,165,255,.28);
  margin-top: 6px;
}
.t-text{color: var(--text); opacity:.95;}

.link-list{list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap: 10px;}
.link-list a{color:#fff; text-decoration: underline;}

.site-footer{padding: 24px 0 10px 0;}
.site-footer p{margin:0; font-size: 13px;}

@media (max-width: 880px){
  .hero-inner{grid-template-columns: 1fr; }
  .grid-2{grid-template-columns: 1fr;}
  .nav-toggle{display:inline-flex;}
  .nav-list{
    position: absolute;
    right: 20px;
    top: 62px;
    flex-direction:column;
    gap: 10px;
    padding: 12px;
    background: rgba(17,21,27,.92);
    border: 1px solid var(--border);
    border-radius: 14px;
    display:none;
    min-width: 220px;
  }
  .nav-list[data-open="true"]{display:flex;}
}