:root {
  --primary:#16a34a; --primary-dark:#15803d; --accent:#22c55e;
  --bg:#f8fafc; --card:#fff; --text:#0f172a; --muted:#64748b;
  --border:#e2e8f0; --header:#0f172a; --danger:#ef4444;
  --shadow:0 1px 3px rgba(0,0,0,.06);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Segoe UI',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
a{text-decoration:none;color:inherit}
img{max-width:100%}
.container{max-width:1200px;margin:0 auto;padding:0 16px}

/* Header - dark matches footer */
.header{background:var(--header);border-bottom:1px solid #1e293b;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.header-inner{display:flex;align-items:center;height:64px;gap:20px;width:100%}
.logo{font-size:1.4rem;font-weight:800;color:#22c55e;white-space:nowrap}
.logo span{color:#fff}
.nav-desktop{display:flex;align-items:center;gap:4px;flex:1}
.nav-desktop a,.nav-desktop .nav-item{padding:8px 14px;border-radius:8px;font-size:.9rem;font-weight:500;color:#cbd5e1}
.nav-desktop a:hover,.nav-desktop .nav-item:hover{background:#1e293b;color:#fff}
.dropdown{position:relative}
.dropdown-menu{display:none;position:absolute;top:100%;left:0;background:#1e293b;border:1px solid #334155;border-radius:10px;min-width:160px;padding:6px;z-index:50;box-shadow:0 8px 24px rgba(0,0,0,.3)}
.dropdown:hover .dropdown-menu{display:block}
.dropdown-menu a{display:block;padding:8px 12px;border-radius:6px;font-size:.88rem;color:#e2e8f0}
.dropdown-menu a:hover{background:#334155;color:#fff}
.header-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.search-box{display:flex;align-items:center}
.search-box input{padding:8px 12px;border:1.5px solid #334155;border-radius:8px 0 0 8px;font-size:.9rem;background:#1e293b;color:#fff;outline:none;width:180px}
.search-box input::placeholder{color:#64748b}
.search-box button{padding:8px 12px;background:var(--primary);border:none;border-radius:0 8px 8px 0;color:#fff;cursor:pointer}
.icon-btn{font-size:1.2rem;color:#cbd5e1;background:none;border:none;cursor:pointer;padding:4px}
.icon-btn:hover{color:#fff}
.hamburger{display:none;background:none;border:none;font-size:1.5rem;color:#fff;cursor:pointer}
.mobile-menu{display:none;background:#0f172a;border-bottom:1px solid #1e293b;padding:12px 16px}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:12px 14px;border-radius:8px;color:#cbd5e1;font-weight:500;margin-bottom:4px}
.mobile-menu a:hover{background:#1e293b;color:#fff}

/* Section */
.section{margin:28px auto;padding:0 16px;max-width:1200px}
.section h2{font-size:1.35rem;margin-bottom:18px;font-weight:700}

/* Products grid: 4 desktop, 2 mobile */
.products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.product-card{background:var(--card);border-radius:14px;border:1px solid var(--border);overflow:hidden;transition:.2s;box-shadow:var(--shadow)}
.product-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.08)}
.card-img{height:150px;background:#f1f5f9;display:flex;align-items:center;justify-content:center;font-size:3rem;position:relative}
.card-img img{width:100%;height:100%;object-fit:cover}
.badge-sale{position:absolute;top:10px;right:10px;background:#ef4444;color:#fff;font-size:.7rem;font-weight:700;padding:3px 8px;border-radius:6px}
.card-body{padding:14px}
.card-title{font-size:.95rem;font-weight:600;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-price{margin-bottom:12px}
.card-price .old{text-decoration:line-through;color:var(--muted);font-size:.85rem;margin-right:6px}
.card-price .new{color:var(--primary);font-weight:700;font-size:1.05rem}
.card-btns{display:flex;gap:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 14px;border-radius:8px;font-weight:600;font-size:.85rem;border:none;cursor:pointer;transition:.15s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-outline{background:#fff;color:var(--text);border:1.5px solid var(--border)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-block{width:100%}
.btn-sm{padding:8px 10px;font-size:.8rem;flex:1}

/* Product detail */
.detail-wrap{display:grid;grid-template-columns:1fr 1fr;gap:28px;max-width:1200px;margin:24px auto;padding:0 16px}
.product-image{background:#f1f5f9;border-radius:14px;height:280px;display:flex;align-items:center;justify-content:center;font-size:5rem;overflow:hidden}
.product-image img{width:100%;height:100%;object-fit:cover}
.video-wrap{margin-top:14px;border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:#000}
.video-wrap iframe{width:100%;height:100%;border:0}
.detail-info h1{font-size:1.6rem;margin-bottom:10px}
.price-box{margin:14px 0}
.price-box .current{font-size:1.6rem;font-weight:800;color:var(--primary)}
.price-box .old{text-decoration:line-through;color:var(--muted);margin-left:8px}
.detail-desc{color:var(--muted);margin:16px 0;line-height:1.7}

/* Forms / checkout */
.form-group{margin-bottom:14px}
.form-group label{display:block;font-weight:600;font-size:.85rem;margin-bottom:5px}
.form-control{width:100%;padding:10px 12px;border:1.5px solid var(--border);border-radius:8px;font-size:.92rem;outline:none}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(22,163,74,.12)}
.checkout-box,.success-box,.box{max-width:520px;margin:32px auto;background:#fff;border-radius:14px;padding:28px;border:1px solid var(--border);box-shadow:var(--shadow)}
.success-icon{font-size:3rem;text-align:center;color:var(--primary)}
.download-list{margin-top:20px}
.download-item{display:flex;justify-content:space-between;align-items:center;padding:12px;border:1px solid var(--border);border-radius:8px;margin-bottom:8px}

/* Footer - same dark as header */
.footer{background:var(--header);color:#94a3b8;margin-top:48px;padding:32px 0 16px}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px;max-width:1200px;margin:0 auto;padding:0 16px}
.footer h4{color:#fff;margin-bottom:10px;font-size:.95rem}
.footer a{color:#94a3b8;font-size:.88rem;display:block;margin-bottom:6px}
.footer a:hover{color:#fff}
.footer-bottom{text-align:center;padding-top:20px;margin-top:20px;border-top:1px solid #1e293b;font-size:.8rem;max-width:1200px;margin-left:auto;margin-right:auto}

@media(max-width:900px){
  .nav-desktop,.search-box{display:none!important}
  .hamburger{display:block}
  .products-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .card-img{height:120px;font-size:2.5rem}
  .card-btns{flex-direction:column}
  .detail-wrap{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
}
@media(max-width:380px){
  .card-img{height:100px}
  .logo{font-size:1.15rem}
}