*{box-sizing:border-box;}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#1f2937;background:#f9fafb;line-height:1.6;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;border-radius:12px;}
.container{max-width:1100px;margin:0 auto;padding:0 16px;}
.site-header{background:#fff;border-bottom:1px solid #e5e7eb;position:sticky;top:0;z-index:10;}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:15px;}
.logo{font-size:22px;font-weight:700;color:#1d4ed8;}
.main-nav{display:flex;flex-wrap:wrap;gap:14px;}
.main-nav a{color:#4b5563;font-weight:500;}
.main-nav a:hover{color:#1d4ed8;}
.cart-link{font-size:14px;padding:6px 10px;border-radius:999px;background:#e0efff;color:#1d4ed8;display:inline-flex;align-items:center;gap:6px;}
.cart-count{background:#1d4ed8;color:#fff;border-radius:999px;padding:0 6px;font-size:12px;min-width:18px;text-align:center;}
.hero{background:linear-gradient(135deg,#e0f2fe,#f5f3ff);padding:50px 0;}
.hero-inner{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:40px;align-items:center;}
.hero-text h1{font-size:32px;margin:0 0 14px;font-weight:700;color:#1e3a8a;}
.hero-text p{color:#4b5563;margin-bottom:18px;}
.section{padding:50px 0;}
.section-alt{background:#fff;}
.btn{display:inline-block;padding:12px 20px;border-radius:999px;font-weight:600;font-size:15px;cursor:pointer;border:1px solid transparent;transition:.2s;}
.btn-primary{background:#2563eb;color:#fff;border-color:#2563eb;}
.btn-primary:hover{background:#1d4ed8;border-color:#1d4ed8;}
.btn-secondary{background:#111827;color:#fff;}
.btn-outline{background:transparent;color:#2563eb;border-color:#2563eb;}
.btn-outline:hover{background:#2563eb;color:#fff;}
.blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;}
.article-card{background:#fff;padding:20px;border-radius:12px;border:1px solid #e5e7eb;}
.article-card h3{margin-top:0;color:#1e40af;}
.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px;margin-top:25px;}
.product-card{background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:18px;display:flex;flex-direction:column;gap:12px;}
.product-card h2{margin-top:0;color:#1e40af;}
.price{font-weight:700;color:#1d4ed8;margin:6px 0;font-size:18px;}
.product-actions{display:flex;gap:10px;flex-wrap:wrap;}
.product-detail{background:#fff;padding:25px;border-radius:16px;border:1px solid #e5e7eb;display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;}
.product-info h1{margin-top:0;color:#1e3a8a;}
.form{max-width:450px;display:flex;flex-direction:column;gap:16px;}
.form label{font-weight:600;font-size:14px;color:#374151;}
.form input,.form textarea{padding:12px;border:1px solid #d1d5db;border-radius:10px;font-size:15px;}
.form-note{font-size:13px;color:#6b7280;margin-top:-8px;}
#cart-items{margin:20px 0;}
.cart-item{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid #e5e7eb;}
.cart-item button{font-size:13px;padding:6px 10px;}
#cart-total{font-weight:700;font-size:20px;color:#1d4ed8;margin-bottom:20px;}
.two-column{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;align-items:start;}
.footer{background:#111827;color:#e5e7eb;padding:40px 0;margin-top:50px;font-size:14px;}
.footer-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:30px;}
.footer a{color:#e5e7eb;}
.footer a:hover{opacity:.8;}
.footer-links{display:flex;flex-direction:column;gap:6px;}
@media(max-width:600px){
  .hero-text h1{font-size:26px;}
  .header-inner{flex-direction:column;align-items:flex-start;}
}