:root{
  --bg:#f9fbff;
  --panel:#ffffff;
  --accent:#1e90ff;
  --accent2:#007bff;
  --text:#0a142f;
  --muted:#334155;
  --ok:#0284c7;
  --warn:#b45309;
  --danger:#b91c1c;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter, system-ui, Segoe UI, Roboto, Arial, sans-serif;font-size:17px;line-height:1.8;overflow-x:hidden}
a{color:#0a2a6a;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}
img,video{max-width:100%;height:auto;display:block}
.container{max-width:1100px;margin:0 auto;padding:22px}
.header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;position:sticky;top:0;background:var(--accent);color:#fff;z-index:20}
.logo{font-weight:900;letter-spacing:.5px;font-size:22px;color:#fff}
.badge{background:#fff;color:#0a142f;padding:6px 10px;border-radius:999px;font-weight:800}
.btn{display:inline-flex;gap:8px;align-items:center;border:0;border-radius:14px;padding:14px 18px;background:linear-gradient(90deg,var(--accent),var(--accent2));color:#fff;font-weight:900;cursor:pointer;box-shadow:0 10px 22px rgba(0,68,255,.18);transition:.2s}
.btn:hover{transform:translateY(-1px)}
.btn.secondary{background:#0a57a5;color:#fff;box-shadow:none}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
.hero video,.hero img{border-radius:24px;border:2px solid #bfdbfe;box-shadow:0 20px 40px rgba(0,0,0,.12)}
.card{background:var(--panel);border:1px solid #dbeafe;border-radius:22px;padding:22px;box-shadow:0 4px 12px rgba(30,144,255,.08)}
.price{display:flex;align-items:baseline;gap:10px}
.price .now{font-size:2.2rem;font-weight:900;color:#0a142f}
.price .old{color:#64748b;text-decoration:line-through}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px}
.kpis .k{background:#eff6ff;border:1px solid #bfdbfe;border-radius:16px;padding:12px;text-align:center;font-weight:800;color:#0a142f}
.qty{display:flex;align-items:center;gap:10px;margin:12px 0}
.qty input{width:90px;border-radius:12px;border:1px solid #cbd5e1;background:#fff;color:#0a142f;padding:10px;font-weight:700}
.features{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:8px}
.features li{background:#fff;border:1px solid #dfe3ea;border-radius:14px;padding:12px;list-style:none;color:#0a142f;font-weight:500}
.section{margin-top:36px}
.footer{padding:28px 24px;color:#0a142f;border-top:1px solid #dbeafe;text-align:center;background:#eaf2ff}
/* Cart drawer */
.cart-drawer{position:fixed;right:-420px;top:0;height:100vh;width:380px;background:#fff;border-left:1px solid #dbeafe;box-shadow:-12px 0 32px rgba(0,0,0,.12);transition:.3s;z-index:50;padding:20px}
.cart-drawer.open{right:0}
.cart-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.cart-items{display:flex;flex-direction:column;gap:12px;max-height:60vh;overflow:auto;margin-bottom:10px}
.item{display:flex;gap:12px;align-items:center;background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:10px}
.item img{width:64px;height:64px;border-radius:10px;border:1px solid #e5e7eb}
.item .title{font-weight:800;color:#0a142f}
.total{display:flex;justify-content:space-between;font-weight:900;font-size:20px;margin:8px 0 16px}
.note{font-size:12px;color:#475569}
.tag{display:inline-flex;gap:8px;align-items:center;padding:6px 10px;border-radius:999px;background:#eff6ff;border:1px solid #bfdbfe;color:#0a142f;font-weight:700}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
/* Mobile menu */
.nav-toggle{display:none}
.nav-links{display:flex;gap:16px;align-items:center}
@media(max-width:880px){
  .hero{grid-template-columns:1fr}
  .kpis{grid-template-columns:repeat(2,1fr)}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;background:#0a57a5;border:1px solid rgba(255,255,255,.2);cursor:pointer;color:#fff}
  .nav-links{display:none}
  .mobile-drawer{position:fixed;top:64px;left:0;right:0;background:var(--accent);color:#fff;border-top:1px solid rgba(255,255,255,.2);display:none;flex-direction:column;padding:14px 20px;z-index:40}
  .mobile-drawer a{padding:12px 6px;color:#fff;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.15)}
  .mobile-open .mobile-drawer{display:flex}
  .mobile-open{overflow:hidden}
}
/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.gallery img{width:100%;height:200px;object-fit:cover;border-radius:14px;border:2px solid #bfdbfe;background:#fff;cursor:pointer}
@media(max-width:880px){.gallery{grid-template-columns:repeat(2,1fr)} .gallery img{height:160px}}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.75);display:none;align-items:center;justify-content:center;padding:20px;z-index:60}
.modal.open{display:flex}
.modal img, .modal video{max-width:96vw;max-height:88vh;border-radius:20px}
.close-x{position:absolute;top:18px;right:18px;background:#0a57a5;border:1px solid rgba(255,255,255,.2);border-radius:10px;padding:10px 12px;color:#fff;font-weight:800;cursor:pointer}