:root{
  --bg: #0b1220;
  --bg-2: #0f1a2d;
  --panel: #11203a;
  --panel-2: #15294a;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.18);
  --text: #e7eef9;
  --text-dim: #9fb0c8;
  --text-mute: #6f8298;
  --teal: #2fd6b1;
  --teal-2: #00c896;
  --orange: #ff8a3d;
  --orange-2: #ff6f3c;
  --grad-teal: linear-gradient(135deg,#2fd6b1,#00a47a);
  --grad-orange: linear-gradient(135deg,#ffb27a,#ff6f3c);
  --shadow-1: 0 8px 30px rgba(0,0,0,.35);
  --radius: 16px;
  --maxw: 1120px;
  --mono: ui-monospace,SFMono-Regular,"JetBrains Mono",Menlo,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family: Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(47,214,177,.10), transparent 60%),
              radial-gradient(1000px 500px at -10% 30%, rgba(255,138,61,.08), transparent 60%),
              var(--bg);
  color: var(--text);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
a:hover{color:var(--teal)}
img{max-width:100%;display:block}

/* Layout */
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--sm{padding:56px 0}
.section__head{max-width:780px;margin:0 0 40px}
.section__head h2{font-size:clamp(28px,4vw,42px);line-height:1.15;margin:8px 0 12px;letter-spacing:-.02em}
.section__head p{color:var(--text-dim);font-size:17px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--teal);font-weight:700;
}
.eyebrow__dot{width:6px;height:6px;border-radius:999px;background:var(--teal);box-shadow:0 0 0 4px rgba(47,214,177,.15)}
.grad-teal{background:var(--grad-teal);-webkit-background-clip:text;background-clip:text;color:transparent}
.grad-orange{background:var(--grad-orange);-webkit-background-clip:text;background-clip:text;color:transparent}

/* Nav */
.nav{
  position:sticky;top:0;z-index:50;
  backdrop-filter:saturate(140%) blur(14px);
  background:rgba(11,18,32,.7);
  border-bottom:1px solid var(--border);
}
.nav__inner{max-width:var(--maxw);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 24px}
.nav__brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.01em}
.nav__brand-mark{
  width:30px;height:30px;border-radius:9px;
  background:var(--grad-teal);
  display:grid;place-items:center;color:#062018;font-weight:900;
  box-shadow:0 6px 20px rgba(0,200,150,.35);
}
.nav__links{display:flex;gap:22px;color:var(--text-dim);font-weight:500}
.nav__links a:hover{color:var(--text)}
.nav__cta .btn{padding:8px 14px;font-size:14px}
@media (max-width:720px){.nav__links{display:none}}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;font-size:15px;
  padding:12px 18px;border-radius:12px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn--primary{background:var(--grad-teal);color:#062018;box-shadow:0 8px 24px rgba(0,200,150,.25)}
.btn--primary:hover{transform:translateY(-1px);color:#062018}
.btn--ghost{background:transparent;border-color:var(--border-strong);color:var(--text)}
.btn--ghost:hover{background:rgba(255,255,255,.04);color:var(--text)}

/* Hero */
.hero{
  padding:96px 0 64px;
  position:relative;
}
.hero__inner{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
@media (max-width:900px){.hero__inner{grid-template-columns:1fr}}
.hero h1{
  font-size:clamp(34px,5.2vw,60px);
  line-height:1.05;letter-spacing:-.025em;margin:14px 0 18px;
}
.hero p.lead{font-size:18px;color:var(--text-dim);max-width:60ch;margin:0 0 26px}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap}
.hero__chips{margin-top:28px;display:flex;flex-wrap:wrap;gap:8px}
.chip{
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:6px 10px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--border);color:var(--text-dim);
}
.hero__card{
  position:relative;
  border:1px solid var(--border);border-radius:24px;
  padding:24px;background:linear-gradient(180deg,rgba(47,214,177,.08),rgba(15,26,45,.6));
  box-shadow:var(--shadow-1);
}
.hero__card h3{margin:0 0 6px;font-size:18px}
.hero__card p{margin:0;color:var(--text-dim);font-size:14px}
.hero__card-row{display:flex;gap:14px;align-items:center;padding:14px 0;border-top:1px dashed var(--border)}
.hero__card-row:first-of-type{border-top:0;padding-top:6px}
.hero__card-row img{width:42px;height:42px;border-radius:10px}
.hero__card .badge{margin-left:auto;font-size:11px;padding:4px 8px;border-radius:999px;background:rgba(47,214,177,.12);color:var(--teal);border:1px solid rgba(47,214,177,.25)}

/* Card grid */
.grid{display:grid;gap:20px}
.grid--apps{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}
.grid--talks{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.card{
  position:relative;
  border:1px solid var(--border);border-radius:var(--radius);
  background:linear-gradient(180deg,var(--panel),var(--bg-2));
  padding:22px;
  transition:transform .15s ease, border-color .15s ease, box-shadow .15s ease;
  display:flex;flex-direction:column;gap:12px;
}
.card:hover{transform:translateY(-2px);border-color:var(--border-strong);box-shadow:var(--shadow-1)}
.card__head{display:flex;align-items:center;gap:14px}
.card__icon{width:54px;height:54px;border-radius:14px;background:#0a1424;border:1px solid var(--border);overflow:hidden;display:grid;place-items:center;font-weight:800;color:var(--teal)}
.card__icon img{width:100%;height:100%;object-fit:cover}
.card__title{margin:0;font-size:18px;letter-spacing:-.01em}
.card__sub{color:var(--text-mute);font-size:13px;margin:2px 0 0}
.card__body{color:var(--text-dim);font-size:14.5px;flex:1}
.card__meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto}
.card__cta{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px}
.card__cta a{
  font-size:13px;font-weight:600;color:var(--teal);
  display:inline-flex;align-items:center;gap:4px;
}
.card__cta a::after{content:"→";transition:transform .15s ease;display:inline-block}
.card__cta a:hover::after{transform:translateX(3px)}

/* Talks list (rich) */
.talks-list{display:flex;flex-direction:column;gap:18px}
.talk{
  border:1px solid var(--border);border-radius:var(--radius);
  background:linear-gradient(180deg,var(--panel),var(--bg-2));
  padding:24px;
}
.talk__head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;margin-bottom:10px}
.talk__title{margin:0;font-size:22px;letter-spacing:-.01em}
.talk__year{color:var(--orange);font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.05em}
.talk__venue{color:var(--text-mute);font-size:13px}
.talk__abstract{color:var(--text-dim);font-size:15.5px;margin:8px 0 14px}
.talk__tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.talk__links{display:flex;flex-wrap:wrap;gap:14px}
.talk__links a{font-size:14px;font-weight:600;color:var(--teal)}

/* Empty state */
.empty{
  border:1px dashed var(--border-strong);border-radius:var(--radius);
  padding:32px;text-align:center;color:var(--text-dim);
  background:rgba(255,255,255,.02);
}
.empty strong{color:var(--text)}

/* Footer */
.footer{
  margin-top:80px;border-top:1px solid var(--border);
  padding:36px 0 48px;color:var(--text-mute);font-size:14px;
}
.footer__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.footer__links{display:flex;gap:18px;align-items:center}
.footer__links a{color:var(--text-dim);display:inline-flex;align-items:center;gap:6px}
.footer__links a:hover{color:var(--text)}
.footer__brand{display:flex;align-items:center;gap:10px;color:var(--text)}
.footer__brand .nav__brand-mark{width:24px;height:24px;border-radius:7px;font-size:13px}

/* Page header (sub-pages) */
.page-head{padding:80px 0 24px}
.page-head h1{font-size:clamp(32px,5vw,48px);line-height:1.1;letter-spacing:-.02em;margin:10px 0 10px}
.page-head p{color:var(--text-dim);max-width:65ch;margin:0}
.back-link{font-size:13px;color:var(--text-mute);font-weight:600}
.back-link:hover{color:var(--teal)}

/* Section break */
.divider{height:1px;background:var(--border);margin:0}