:root{--bg:#f7f8fa;--surface:#fff;--muted:#6b7280;--text:#0b1220;--border:#e5e7eb;--brand:#111827;--accent:#2563eb}
*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Helvetica Neue",Arial}
a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block;border-radius:16px}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;background:rgba(255,255,255,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);z-index:50}
nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand a{padding:8px 12px;border-radius:12px;border:1px solid var(--border);background:var(--surface);font-weight:800}
.nav-links{display:flex;gap:18px}.nav-links a{opacity:.8;padding:8px 10px;border-radius:10px}.nav-links a:hover{opacity:1;background:#f1f5f9}.active{text-decoration:underline}
.btn{display:inline-flex;align-items:center;gap:10px;padding:12px 18px;border-radius:14px;border:1px solid var(--border);background:linear-gradient(180deg,#fff,#f7f8fc);color:var(--brand);font-weight:700;transition:transform .1s ease,box-shadow .2s}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 22px rgba(2,6,23,.06)}.btn.primary{background:linear-gradient(180deg,#111827,#1f2937);color:#fff;border-color:#0f172a}
.section{padding:40px 0}.card{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:20px;box-shadow:0 12px 30px rgba(2,6,23,.04)}
.grid{display:grid;gap:18px}.grid.cols-2{grid-template-columns:1.1fr .9fr}.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.hero h1{font-size:40px;line-height:1.1;margin:8px 0 12px}.hero p{font-size:18px;color:var(--muted)}
.placeholder{border:2px dashed #cbd5e1;border-radius:18px;display:flex;align-items:center;justify-content:center;min-height:260px;background:#fff;color:#475569;text-align:center;padding:16px}
.product-card img{aspect-ratio:4/3;object-fit:cover}.product-footer{display:flex;justify-content:space-between;align-items:center;margin-top:10px}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:#eef2ff;border:1px solid #e0e7ff;color:#3730a3;font-weight:700;font-size:12px}
.detail{display:grid;grid-template-columns:1.1fr .9fr;gap:24px}.detail .meta{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:18px}
.meta h3{margin:0 0 8px}.meta ul{margin:0;padding-left:18px;line-height:1.9}
footer{padding:36px 0;color:var(--muted);border-top:1px solid var(--border);margin-top:36px}
.mobile-menu{display:none}@media (max-width:860px){.grid.cols-2,.grid.cols-3{grid-template-columns:1fr}.nav-links{display:none}.mobile-menu{display:inline-flex}.detail{grid-template-columns:1fr}}