:root{
  --bg: #0b1020;
  --card: rgba(255,255,255,.06);
  --card2: rgba(255,255,255,.08);
  --stroke: rgba(255,255,255,.14);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.66);
  --shadow: 0 18px 50px rgba(0,0,0,.35);
  --radius: 18px;
  --radius2: 24px;
  --max: 1120px;

  --accent: #78a6ff;
  --accent2: #9bffd6;
  --warm: #ffcf78;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: "Noto Sans SC", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 20% -10%, rgba(120,166,255,.28), transparent 60%),
              radial-gradient(900px 600px at 110% 10%, rgba(155,255,214,.18), transparent 55%),
              radial-gradient(800px 500px at 40% 120%, rgba(255,207,120,.14), transparent 55%),
              var(--bg);
  color: var(--text);
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:underline; text-underline-offset: 4px; }

.container{
  width:min(var(--max), calc(100% - 40px));
  margin:0 auto;
}

/* Topbar */
.topbar{
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(10px);
  background: rgba(10,14,28,.55);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.topbar__inner{
  height: 72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 16px;
}
.topbar__actions{
  display:flex;
  align-items:center;
  gap: 10px;
}
.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  text-decoration:none !important;
}
.brand__dot{
  display:none;
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 6px rgba(120,166,255,.12);
}
.brand__text{
  font-weight: 700;
  letter-spacing: .2px;
}

.nav{
  display:flex;
  gap: 16px;
  padding: 8px 14px;
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 999px;
  background: rgba(255,255,255,.03);
}
.nav a{
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  text-decoration:none !important;
}
.nav a:hover{ color: var(--text); }

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.16);
  background: linear-gradient(135deg, rgba(120,166,255,.22), rgba(155,255,214,.10));
  box-shadow: 0 10px 25px rgba(0,0,0,.25);
  color: var(--text);
  font-weight: 700;
  font-size: 14px;
  text-decoration:none !important;
  cursor:pointer;
}
.btn i{ color: inherit; }
button.btn{ appearance: none; -webkit-appearance: none; }
.btn:hover{
  transform: translateY(-1px);
  transition: transform .15s ease;
}
.btn--ghost{
  background: rgba(255,255,255,.03);
  box-shadow:none;
}
.btn--sm{
  padding: 9px 12px;
  font-size: 13px;
  gap: 8px;
}

/* Hero */
.hero{
  position: relative;
  padding: 52px 0 30px;
}
.hero__bg{
  position:absolute;
  inset: 0;
  opacity: .22;
  background:
    linear-gradient(120deg, rgba(120,166,255,.55), rgba(155,255,214,.26)),
    url("https://images.unsplash.com/photo-1521737604893-d14cc237f11d?auto=format&fit=crop&w=1800&q=80");
  background-size: cover;
  background-position: center;
  filter: saturate(1.05) contrast(1.05);
  mask-image: radial-gradient(800px 520px at 45% 20%, black 55%, transparent 85%);
  pointer-events:none;
}
.hero__inner{
  position: relative;
  display:grid;
  grid-template-columns: 1.6fr .95fr;
  gap: 22px;
  align-items: stretch;
}
.hero__card{
  border: 1px solid rgba(255,255,255,.14);
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding: 26px;
  overflow:hidden;
  height: 100%;
}
.kicker{
  margin:0;
  color: rgba(155,255,214,.9);
  font-weight: 800;
  letter-spacing: .6px;
  font-size: 12px;
  text-transform: uppercase;
}
.hero h1{
  margin: 10px 0 8px;
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: .2px;
}
.subtitle{
  margin: 0 0 16px;
  color: var(--muted);
  font-weight: 600;
  line-height: 1.55;
}
.muted{ color: var(--muted); }

.chips{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 14px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
  color: var(--text);
  font-weight: 700;
  font-size: 13px;
}

.hero__meta{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 14px;
  margin: 12px 0 18px;
}
.meta{
  display:flex;
  align-items:center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.03);
  color: var(--text);
  font-weight: 600;
}
.meta i{ color: rgba(120,166,255,.95); }

.hero__actions{
  display:flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* Side profile */
.hero__side{ height: 100%; }
.hero__side .profile{
  height: 100%;
  display:flex;
  flex-direction: column;
  gap: 14px;
}
.profile__avatar{
  width: 100%;
  height: 320px;
  object-fit: cover;
  object-position: 50% 20%;
  border-radius: var(--radius2);
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: var(--shadow);
}
.profile__card{
  border-radius: var(--radius2);
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  padding: 18px 18px 16px;
  flex: 1;
  display:flex;
  flex-direction: column;
}
.profile__card h3{
  margin: 0 0 8px;
  font-size: 16px;
}
.profile__card p{
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.65;
  font-weight: 600;
}
.profile__stats{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: auto;
}
.stat{
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.18);
  padding: 10px;
  text-align:center;
}
.stat__num{
  font-weight: 900;
  font-size: 18px;
  letter-spacing: .3px;
}
.stat__label{
  margin-top: 2px;
  color: var(--muted);
  font-weight: 700;
  font-size: 12px;
}

/* Sections */
.content{ padding: 20px 0 42px; }
.section{ padding: 26px 0; }
.section__title{
  display:flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}
.section__title h2{
  margin:0;
  font-size: 22px;
  letter-spacing: .2px;
}
.section__title p{
  margin:0;
  color: var(--muted);
  font-weight: 600;
  line-height:1.6;
  max-width: 520px;
}

/* Cards / grids */
.grid{ display:grid; gap: 14px; }
.grid.two{ grid-template-columns: 1fr 1fr; }
.grid.three{ grid-template-columns: 1fr 1fr 1fr; }

.card{
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 10px 30px rgba(0,0,0,.18);
}
.card h3{
  margin:0 0 10px;
  font-size: 16px;
  letter-spacing: .2px;
}
.card--flat{
  box-shadow:none;
  background: rgba(255,255,255,.04);
}

.list{
  margin: 0;
  padding-left: 18px;
  color: var(--text);
  line-height: 1.85;
  font-weight: 600;
}
.list li{ margin: 4px 0; }

/* Timeline */
.timeline{
  display:grid;
  gap: 12px;
}
.titem{
  position: relative;
  display:grid;
  grid-template-columns: 1fr;
  gap: 0;
  align-items: start;
}
.titem__dot{
  display:none;
  width: 12px;
  height: 12px;
  border-radius: 999px;
  margin-top: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 6px rgba(120,166,255,.10);
}
.titem__body{
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  border-radius: var(--radius);
  padding: 16px;
}
.titem__body--edu{
  position: relative;
  --eduLogoSize: 58px;
  padding-left: calc(16px + var(--eduLogoSize) + 16px);
}
.titem__body--edu .edu-logo{
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: var(--eduLogoSize);
  height: var(--eduLogoSize);
  object-fit: cover;
  background: transparent;
  border-radius: 999px;
  pointer-events: none;
}
.titem__body--edu .edu-content .muted{ margin: 0; }
.titem__top{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 12px;
}
.titem__top h3{
  margin:0;
  font-size: 16px;
  line-height: 1.45;
  min-width: 0;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(120,166,255,.12);
  border: 1px solid rgba(120,166,255,.22);
  color: var(--text);
  font-weight: 800;
  font-size: 12px;
  white-space: nowrap;
}

/* Publications */
.filters{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}
.filter{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
  color: var(--muted);
  font-weight: 800;
}
.filter:hover{ color: var(--text); }
.filter.is-active{
  border-color: rgba(120,166,255,.28);
  background: rgba(120,166,255,.12);
  color: rgba(255,255,255,.92);
}

.pubcard__top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom: 10px;
}

.is-hidden{ display:none !important; }

.pub{
  margin: 0;
  padding-left: 18px;
  display:grid;
  gap: 10px;
}
.pub li{
  line-height: 1.6;
  color: var(--text);
  font-weight: 650;
}
.pub__title{
  display:block;
  font-weight: 800;
}
.pub__meta{
  display:block;
  margin-top: 3px;
  color: var(--muted);
  font-weight: 650;
  font-size: 13px;
}

/* Footer */
.footer{
  border-top: 1px solid rgba(255,255,255,.08);
  background: rgba(0,0,0,.22);
  padding: 22px 0;
}
.footer__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  flex-wrap: wrap;
}
.footer__brand{
  display:flex;
  align-items:center;
  gap: 10px;
  font-weight: 800;
}
.footer__left p{ margin: 6px 0 0; }
.footer__right{ display:flex; align-items:center; }
.icp{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
  color: var(--muted);
  font-weight: 800;
  text-decoration:none !important;
}
.icp:hover{ color: var(--text); }

/* Light theme */
body[data-theme="light"]{
  --bg: #f6f7fb;
  --card: rgba(15,23,42,.04);
  --card2: rgba(15,23,42,.06);
  --stroke: rgba(15,23,42,.12);
  --text: rgba(15,23,42,.92);
  --muted: rgba(15,23,42,.62);
  --shadow: 0 18px 50px rgba(15,23,42,.12);
  background: radial-gradient(1200px 600px at 20% -10%, rgba(120,166,255,.18), transparent 60%),
              radial-gradient(900px 600px at 110% 10%, rgba(155,255,214,.10), transparent 55%),
              radial-gradient(800px 500px at 40% 120%, rgba(255,207,120,.10), transparent 55%),
              var(--bg);
}

body[data-theme="light"] .topbar{
  background: rgba(246,247,251,.78);
  border-bottom: 1px solid rgba(15,23,42,.08);
}
body[data-theme="light"] .nav{
  border: 1px solid rgba(15,23,42,.10);
  background: rgba(15,23,42,.03);
}
body[data-theme="light"] .nav a{ color: rgba(15,23,42,.62); }
body[data-theme="light"] .nav a:hover{ color: var(--text); }

body[data-theme="light"] .btn{
  border: 1px solid rgba(15,23,42,.14);
  box-shadow: 0 10px 25px rgba(15,23,42,.10);
}
body[data-theme="light"] .btn--ghost{
  background: rgba(15,23,42,.03);
  box-shadow:none;
}

body[data-theme="light"] .hero__bg{
  opacity: .14;
}
body[data-theme="light"] .hero__card{
  border: 1px solid rgba(15,23,42,.12);
  background: linear-gradient(180deg, rgba(15,23,42,.04), rgba(15,23,42,.02));
}
body[data-theme="light"] .chip,
body[data-theme="light"] .meta,
body[data-theme="light"] .profile__avatar,
body[data-theme="light"] .profile__card,
body[data-theme="light"] .stat,
body[data-theme="light"] .card,
body[data-theme="light"] .titem__body,
body[data-theme="light"] .icp,
body[data-theme="light"] .filter{
  border: 1px solid rgba(15,23,42,.12);
  background: rgba(15,23,42,.03);
  color: var(--text);
}
body[data-theme="light"] .stat{ background: rgba(15,23,42,.04); }
body[data-theme="light"] .filter.is-active{
  border-color: rgba(120,166,255,.35);
  background: rgba(120,166,255,.14);
  color: rgba(15,23,42,.92);
}
body[data-theme="light"] .tag{
  background: rgba(120,166,255,.10);
  border: 1px solid rgba(120,166,255,.24);
  color: rgba(15,23,42,.86);
}

body[data-theme="light"] .footer{
  border-top: 1px solid rgba(15,23,42,.08);
  background: rgba(15,23,42,.04);
}

/* Responsive */
@media (max-width: 980px){
  .hero__inner{ grid-template-columns: 1fr; }
  .nav{ display:none; }
}

@media (max-width: 720px){
  .hero__meta{ grid-template-columns: 1fr; }
  .grid.two{ grid-template-columns: 1fr; }
  .grid.three{ grid-template-columns: 1fr; }
  .section__title{ flex-direction: column; align-items: flex-start; }
}