:root{--bg:#0f172a;--panel:#0b1220;--muted:#94a3b8;--text:#e5e7eb;--accent:#f59e0b;--stroke:#1f2937}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit}
.container{width:min(1140px,92%);margin-inline:auto}
.skip{position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip:focus{left:8px;top:8px;width:auto;height:auto;z-index:1000;background:#111827;color:#fff;padding:8px 10px;border-radius:8px}

/* Top Banner */
.top-banner{width:100%;overflow:hidden;background:var(--bg);max-height:180px}
.top-banner img{width:100%;height:auto;display:block;object-fit:cover;max-height:180px}

/* Header */
header{position:sticky;top:0;z-index:50;background:rgba(15,23,42,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--stroke)}
.nav{display:flex;align-items:center;justify-content:flex-end;padding:12px 0}
.menu{display:flex;gap:20px;align-items:center}
.menu a{color:var(--muted);font-weight:700}
.menu a:hover{color:var(--text)}
.menu .btn{padding:12px 18px;border-radius:12px;background:var(--accent);color:#111827}
.burger{display:none}

/* Buttons / Cards */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 16px;border-radius:12px;border:1px solid var(--stroke);background:#111827;color:#e5e7eb;font-weight:800}
.btn.primary{background:linear-gradient(135deg,var(--accent),#fbbf24);color:#111827;border:none}
.panel{background:var(--panel);border:1px solid var(--stroke);border-radius:16px;padding:20px}
.card{background:#0f1628;border:1px solid var(--stroke);border-radius:16px;padding:18px;display:grid;gap:8px}
.card img{width:100%;height:auto;aspect-ratio:4/3;object-fit:contain;border-radius:12px;margin-bottom:8px;background:var(--panel)}

/* Product Cards */
.product-header{display:flex;justify-content:space-between;align-items:center;gap:12px}
.product-header h4{margin:0;flex:1}
.price{color:var(--accent);font-weight:800;font-size:18px;white-space:nowrap}
.description-toggle{background:none;border:none;color:var(--muted);font-size:12px;cursor:pointer;padding:4px 0;text-decoration:underline}
.description-content{display:none;margin-top:8px;padding:8px 12px;background:var(--panel);border-radius:8px;border-left:3px solid var(--accent);font-size:13px}
.description-content.show{display:block}
.description-content p{margin:6px 0;line-height:1.4}
.description-content ul{margin:8px 0;padding-left:18px}
.description-content li{margin:4px 0;color:var(--muted);font-size:13px}

/* Layout */
.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center;padding:56px 0 28px}
.hero h1{font-size:clamp(30px,5vw,48px);line-height:1.05;margin:.2rem 0 .6rem}
.muted{color:var(--muted)}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}

.section{padding:36px 0}
.section h2{font-size:clamp(22px,4vw,30px);margin:0 0 10px}
.youtube{aspect-ratio:16/9;border:0;border-radius:14px;overflow:hidden;background:#000;width:100%}
.youtube-wrapper{position:relative}
.youtube-fallback{text-align:center;padding:20px;background:var(--panel);border-radius:14px}
.youtube-fallback .btn{margin:0 auto}

/* Lists */
.bullets{margin:8px 0 0;padding:0 0 0 18px}
.bullets li{margin:6px 0;color:var(--muted)}

/* Footer */
footer{border-top:1px solid var(--stroke);padding:22px 0;color:var(--muted)}

/* Gallery placeholders */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.thumb{display:block;position:relative;background:#0b1220;border:1px dashed var(--stroke);border-radius:14px;min-height:120px}
.thumb span{position:absolute;left:12px;bottom:10px;color:var(--muted);font-weight:600}

/* Responsive */
@media (max-width:900px){
  .hero{grid-template-columns:1fr}
  .grid-3,.gallery{grid-template-columns:1fr}
  .burger{display:block;background:none;border:1px solid var(--stroke);padding:8px 10px;border-radius:10px;color:#fff}
  .menu{display:none}
  .menu.open{display:flex;flex-direction:column;gap:10px;position:absolute;left:0;right:0;top:76px;background:rgba(15,23,42,.98);padding:16px;border-bottom:1px solid var(--stroke)}
}

html{scroll-behavior:smooth}