:root{
  --bg:#0b0f14;
  --panel:#111827;
  --panel2:#0f172a;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --line:rgba(255,255,255,.08);
  --accent:#f59e0b;
  --accent2:#60a5fa;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 18px;
  --max: 1100px;
}

:root[data-theme="light"]{
  --bg:#ffffff;
  --panel:#f5f7fb;
  --panel2:#ffffff;
  --text:#0b1220;
  --muted:#4b5563;
  --line:rgba(10,20,30,.12);
  --shadow: 0 10px 30px rgba(10,20,30,.12);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 20% -10%, rgba(245,158,11,.15), transparent 50%),
              radial-gradient(900px 600px at 90% 10%, rgba(96,165,250,.14), transparent 55%),
              var(--bg);
  color:var(--text);
  line-height:1.5;
}

a{color:inherit; text-decoration:none}
.container{width: min(var(--max), calc(100% - 48px)); margin:0 auto}

.skip{
  position:absolute; left:-999px; top:10px; background:var(--panel); color:var(--text);
  padding:10px 12px; border-radius:10px; border:1px solid var(--line);
}
.skip:focus{left:12px; z-index:9999}

.header{
  position:sticky; top:0; z-index:100;
  backdrop-filter: blur(10px);
  background: rgba(0,0,0,.25);
  border-bottom:1px solid var(--line);
}
:root[data-theme="light"] .header{ background: rgba(255,255,255,.75); }

.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
  gap:16px;
}
.brand{display:flex; align-items:center; gap:10px; font-weight:700}
.logo{
  width:38px; height:38px; display:grid; place-items:center;
  border-radius:12px;
  background: linear-gradient(135deg, rgba(245,158,11,.25), rgba(96,165,250,.22));
  border:1px solid var(--line);
}
.brand-text{letter-spacing:.3px}

.menu{display:flex; gap:14px; flex-wrap:wrap; justify-content:center}
.menu a{
  padding:8px 10px; border-radius:12px; color:var(--muted);
}
.menu a:hover{background:rgba(255,255,255,.06); color:var(--text)}
:root[data-theme="light"] .menu a:hover{background:rgba(10,20,30,.06)}

.actions{display:flex; gap:10px}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.06);
  color:var(--text);
  cursor:pointer;
  transition: transform .06s ease, background .2s ease;
}
.btn:active{transform: translateY(1px)}
.btn-ghost{background:transparent}
.btn-primary{
  background: linear-gradient(135deg, rgba(245,158,11,.95), rgba(245,158,11,.65));
  border-color: rgba(245,158,11,.35);
  color:#111827;
  font-weight:700;
}
.btn-secondary{
  background: linear-gradient(135deg, rgba(96,165,250,.35), rgba(96,165,250,.18));
}
.btn:hover{background:rgba(255,255,255,.09)}
:root[data-theme="light"] .btn:hover{background:rgba(10,20,30,.06)}
.btn-primary:hover{filter:saturate(1.05)}

.hero{padding:56px 0 26px}
.hero-grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:24px;
  align-items:start;
}
.kicker{color:var(--muted); margin:0 0 10px}
h1{font-size: clamp(34px, 4vw, 52px); line-height:1.1; margin:0 0 14px}
.lead{font-size: 18px; color:var(--muted); margin:0 0 18px; max-width: 62ch}

.hero-cta{display:flex; gap:12px; flex-wrap:wrap; margin: 18px 0 14px}

.chips{display:flex; gap:10px; flex-wrap:wrap; margin-top:14px}
.chip{
  padding:8px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.05);
  color:var(--muted);
  font-size: 13px;
}

.hero-card{
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid var(--line);
  border-radius: var(--radius);
  padding:18px;
  box-shadow: var(--shadow);
}
.hero-card h2{margin:0 0 10px; font-size:18px}
.facts{list-style:none; margin:0; padding:0; display:grid; gap:10px}
.facts li{color:var(--muted)}
.facts strong{color:var(--text)}
.note{margin:12px 0 0; color:var(--muted); font-size:13px}

.section{padding:44px 0}
.section.alt{background: rgba(255,255,255,.03); border-top:1px solid var(--line); border-bottom:1px solid var(--line)}
:root[data-theme="light"] .section.alt{background: rgba(10,20,30,.03)}

.section-head{margin-bottom:18px}
.section-head h2{margin:0 0 6px; font-size:26px}
.section-head p{margin:0; color:var(--muted)}

.grid{display:grid; gap:14px}
.grid.cards{grid-template-columns: repeat(3, minmax(0,1fr))}
.grid.two{grid-template-columns: repeat(2, minmax(0,1fr))}
.grid.three{grid-template-columns: repeat(3, minmax(0,1fr))}

.card, .panel{
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding:16px;
  box-shadow: var(--shadow);
}
.card h3, .panel h3{margin:0 0 8px; font-size:18px}
.card p, .panel p{margin:0; color:var(--muted)}
.bullets{margin:10px 0 0; padding-left:18px; color:var(--muted)}
.tag-row{display:flex; gap:8px; flex-wrap:wrap; margin-top:12px}
.tag{
  font-size:12px; color:var(--muted);
  padding:6px 10px; border-radius:999px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.05);
}

.cta-bar{
  margin-top:16px;
  display:flex; gap:14px; align-items:center; justify-content:space-between;
  padding:16px;
  border-radius: var(--radius);
  border:1px solid rgba(245,158,11,.25);
  background: linear-gradient(135deg, rgba(245,158,11,.10), rgba(96,165,250,.08));
}
.cta-bar h3{margin:0 0 4px}
.cta-bar p{margin:0; color:var(--muted)}

.qa{
  margin:12px 0;
  border:1px solid var(--line);
  border-radius: 14px;
  background: var(--panel2);
  overflow:hidden;
}
.qa summary{
  cursor:pointer;
  padding:14px 14px;
  font-weight:600;
}
.qa p{margin:0; padding:0 14px 14px; color:var(--muted)}

.footer{margin-top:28px; padding:18px 0 0; border-top:1px solid var(--line); color:var(--muted); font-size:13px}

@media (max-width: 920px){
  .hero-grid{grid-template-columns: 1fr}
  .grid.cards{grid-template-columns: repeat(2, minmax(0,1fr))}
  .grid.three{grid-template-columns: 1fr}
}
@media (max-width: 560px){
  .menu{display:none}
  .grid.cards, .grid.two{grid-template-columns: 1fr}
}