/* Minimal, clean styling */
:root{
  --bg:#0b1220;
  --panel:#0f172a;
  --card:#111827;
  --muted:#93a4b8;
  --text:#e5e7eb;
  --accent:#38bdf8;
  --accent-2:#a78bfa;
  --ring: 0 0 0 3px rgba(56,189,248,.35);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Helvetica Neue',Arial,'Noto Sans','Apple Color Emoji','Segoe UI Emoji';
  color:var(--text);
  background: radial-gradient(1200px 600px at 70% -10%, rgba(56,189,248,.18), transparent 70%), var(--bg);
}

.container{max-width:1100px;margin-inline:auto;padding:24px}
.skip-link{position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip-link:focus{left:16px;top:16px;width:auto;height:auto;background:#000;color:#fff;padding:8px 12px;border-radius:8px}

.site-header{position:sticky;top:0;background:rgba(15,23,42,.85);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid rgba(148,163,184,.15);z-index:10}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{height:36px}
.nav a{color:var(--muted);text-decoration:none}
.nav a:hover{color:#fff}

.hero{padding:44px 0 24px 0}
.hero-copy h1{font-size:clamp(28px,4vw,42px);margin:0 0 8px}
.lead{color:var(--muted);font-size:1.125rem;max-width:60ch}
.btn-primary{
  margin-top:16px;
  appearance:none;border:0;border-radius:14px;padding:12px 18px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#081018;font-weight:700;cursor:pointer;box-shadow:0 6px 18px rgba(56,189,248,.35);
}
.btn-primary:focus{outline:none;box-shadow:var(--ring)}
.btn-ghost{appearance:none;border:1px solid rgba(148,163,184,.25);background:transparent;color:var(--text);border-radius:12px;padding:8px 10px;cursor:pointer}
.btn-ghost:focus{outline:none;box-shadow:var(--ring)}

.carousel-section{margin-top:8px}
.carousel{
  background:linear-gradient(180deg, rgba(30,41,59,.6), rgba(2,6,23,.6));
  border:1px solid rgba(148,163,184,.15);
  border-radius:18px;
  padding:16px;
}
.carousel-viewport{
  position:relative;overflow:hidden;border-radius:14px;
  height: 520px;
}
.slide{
  position:absolute;inset:0;display:grid;grid-template-columns:1.2fr 1fr;gap:18px;align-items:center;
  padding:18px;opacity:0;transform:translateX(10%);transition:opacity .5s, transform .5s;
}
.slide[data-active="true"]{opacity:1;transform:translateX(0)}
.slide img{width:100%;height:100%;object-fit:cover;border-radius:12px;border:1px solid rgba(148,163,184,.2)}
.slide h3{margin:0 0 8px;font-size:1.5rem}
.slide p{margin:0;color:var(--muted)}

@media (max-width:900px){
  .slide{grid-template-columns:1fr;grid-template-rows:auto 1fr;height:100%}
  .slide img{height:260px}
}

.carousel-controls{
  display:flex;align-items:center;justify-content:center;gap:10px;margin-top:12px;
}
.dots{display:flex;gap:8px}
.dot{width:10px;height:10px;border-radius:50%;border:1px solid rgba(148,163,184,.45);background:transparent}
.dot[aria-selected="true"]{background:var(--accent)}

.carousel-a11y{display:flex;justify-content:center;margin-top:8px}

.howto, .provenance{margin-top:28px;background:var(--panel);border:1px solid rgba(148,163,184,.15);padding:18px;border-radius:14px}
.howto ul{margin:0;padding-left:1.1rem}
.howto li{margin:6px 0}
kbd{background:#0a0f1d;border:1px solid rgba(148,163,184,.35);border-bottom-width:2px;border-radius:6px;padding:2px 6px}

.site-footer{margin:36px 0 12px;color:var(--muted)}
.footer-inner{display:flex;align-items:center;justify-content:center}
.home-link{white-space:nowrap}