:root{
  --bg:#060b13; --ink:#eaf2ff; --muted:#a8b6c8; --edge:rgba(255,255,255,.08);
  --card:#0e1829; --glass:rgba(255,255,255,.05);
  --brand:#7af0ff; --brand2:#9cff79; --accent:#ffd666;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:
  radial-gradient(1400px 800px at 110% -10%, rgba(122,240,255,.12), transparent 60%),
  radial-gradient(1000px 600px at -10% 120%, rgba(156,255,121,.08), transparent 60%),
  #060b13;color:var(--ink);font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,Helvetica,Arial;scroll-behavior:smooth}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{max-width:1280px;margin:0 auto;padding:20px}

.nav{position:sticky;top:0;background:rgba(10,14,22,.6);backdrop-filter:blur(14px);border-bottom:1px solid var(--edge);z-index:30}
.nav .inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 18px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:48px;border-radius:14px;border:1px solid var(--edge)}
.brand h1{font-size:20px;margin:0}
.search{flex:1;max-width:560px}
.search input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--edge);background:linear-gradient(135deg,#0c1524,#0b111a);color:var(--ink)}
.btn{padding:10px 14px;border-radius:12px;border:1px solid var(--edge);background:var(--glass);display:inline-flex;align-items:center;gap:8px}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#041b16;border:none;font-weight:800}

.header{position:relative;margin:18px;overflow:hidden;border:1px solid var(--edge);border-radius:28px;background:linear-gradient(135deg,rgba(255,255,255,.04),rgba(255,255,255,.02))}
.header .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
.header .banner{border-left:1px solid var(--edge)}
.header h2{margin:18px 18px 6px;font-size:36px}
.header p{margin:0 18px 16px;color:var(--muted)}

.rails{display:grid;grid-template-columns:160px 1fr 160px;gap:18px;margin:18px}
.rail{border:1px solid var(--edge);border-radius:18px;background:linear-gradient(180deg, rgba(122,240,255,.07), rgba(156,255,121,.06));min-height:200px;padding:10px;position:sticky;top:94px;height:max-content}
.rail h3{margin:6px 8px}
.rail .item{padding:8px 10px;margin:8px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid var(--edge)}

.masonry{columns:3;column-gap:18px}
.arc-card{break-inside:avoid;background:linear-gradient(135deg,rgba(255,255,255,.04),rgba(255,255,255,.02));border:1px solid var(--edge);border-radius:22px;overflow:hidden;margin:0 0 18px 0}
.arc{position:relative;height:220px;overflow:hidden}
.arc::before{content:"";position:absolute;inset:-40px -40px auto -40px;height:180px;border-top-left-radius:50% 100px;border-top-right-radius:50% 100px;background:linear-gradient(135deg, rgba(122,240,255,.18), rgba(156,255,121,.10))}
.arc img{position:absolute;left:50%;top:50%;width:120%;height:120%;object-fit:cover;transform:translate(-50%,-50%)}
.arc-card .body{padding:12px}
.badges{display:flex;gap:8px;flex-wrap:wrap}
.badge{font-size:12px;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--edge)}
.title{font-size:18px;margin:6px 0 4px}
.subtitle{color:var(--muted);font-size:14px}
.price{font-weight:900;color:var(--accent);margin-top:6px}
.actions{display:flex;gap:8px;margin-top:10px}

.ticker{position:sticky;top:66px;z-index:25;margin:0 18px;background:rgba(15,25,40,.85);backdrop-filter:blur(8px);border:1px solid var(--edge);border-radius:14px;padding:10px 14px;display:flex;justify-content:space-between;align-items:center}
.ticker .count{font-weight:800;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--edge)}

.footer{margin:40px 18px 100px;border-top:1px solid var(--edge);padding:16px 0;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

.details{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;margin:18px}
.details img{border-radius:16px;border:1px solid var(--edge)}
.panel{padding:16px;border-radius:16px;background:rgba(255,255,255,.04);border:1px solid var(--edge)}
.variant-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:10px 0}
.variant{padding:12px;border-radius:14px;border:1px solid var(--edge);cursor:pointer;background:rgba(255,255,255,.03)}
.variant.active{outline:2px solid var(--brand)}
.field{display:grid;gap:6px;margin:10px 0}
input[type=text],select{width:100%;padding:12px;border-radius:12px;background:linear-gradient(135deg,#0d1624,#0b111a);border:1px solid var(--edge);color:var(--ink)}
.total{display:flex;justify-content:space-between;align-items:center;margin-top:8px}

.checkout-card{margin:18px;padding:16px;border-radius:18px;background:rgba(255,255,255,.04);border:1px solid var(--edge)}
.order-items{display:grid;gap:10px;margin:8px 0}
.order-row{display:flex;justify-content:space-between;gap:8px;background:rgba(255,255,255,.03);padding:10px;border-radius:12px}

@media(max-width:1100px){
  .rails{grid-template-columns:1fr}
  .rail{position:static}
  .masonry{columns:1}
}