:root{--red:#c0392b;--dark:#1a1a1a;--bg:#f5f5f5;--card:#fff;--text:#333}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Sarabun',sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.6}
a{color:var(--red);text-decoration:none}
a:hover{text-decoration:underline}
header{background:var(--dark);color:#fff;padding:0}
.header-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:14px 20px}
.logo{font-size:1.4rem;font-weight:700;color:#fff}
.logo span{color:#f39c12}
nav a{color:#ddd;margin-left:20px;font-size:.9rem}
nav a:hover{color:#fff;text-decoration:none}
.hero{background:linear-gradient(135deg,#c0392b,#922b21);color:#fff;text-align:center;padding:60px 20px}
.hero h1{font-size:2.2rem;font-weight:700;margin-bottom:12px}
.hero p{font-size:1.1rem;opacity:.9;max-width:600px;margin:0 auto}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.section-title{font-size:1.5rem;font-weight:700;margin:40px 0 20px;color:var(--dark);border-left:4px solid var(--red);padding-left:12px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;margin-bottom:40px}
.card{background:var(--card);border-radius:10px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.08);transition:.2s}
.card:hover{box-shadow:0 4px 16px rgba(0,0,0,.15);transform:translateY(-2px)}
.card img{width:100%;height:200px;object-fit:cover}
.card-body{padding:14px}
.card-title{font-size:1rem;font-weight:700;margin-bottom:6px;color:var(--dark)}
.card-desc{font-size:.85rem;color:#666;margin-bottom:12px;min-height:40px}
.btn{display:inline-block;background:var(--red);color:#fff;padding:8px 18px;border-radius:6px;font-size:.9rem;font-weight:600;text-align:center;width:100%}
.btn:hover{background:#a93226;text-decoration:none;color:#fff}
.btn-orange{background:#e67e22}.btn-orange:hover{background:#ca6f1e}
.breadcrumb{font-size:.85rem;color:#999;margin:16px 0}
.breadcrumb a{color:#999}
.product-header{background:#fff;border-radius:10px;padding:30px;margin:20px 0;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.product-header h1{font-size:1.8rem;font-weight:700;color:var(--dark);margin-bottom:10px}
.product-img{width:100%;max-height:400px;object-fit:contain;border-radius:8px;background:#f9f9f9;padding:10px}
.specs{background:#fff;border-radius:10px;padding:24px;margin:20px 0;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.specs table{width:100%;border-collapse:collapse}
.specs td{padding:10px 14px;border-bottom:1px solid #eee;font-size:.95rem}
.specs td:first-child{font-weight:600;color:#555;width:40%;background:#fafafa}
.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:20px 0}
.pros,.cons{background:#fff;border-radius:10px;padding:20px;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.pros h3{color:#27ae60;margin-bottom:10px}
.cons h3{color:#c0392b;margin-bottom:10px}
.pros li,.cons li{margin-left:18px;margin-bottom:6px;font-size:.9rem}
.buy-box{background:linear-gradient(135deg,#c0392b,#922b21);border-radius:10px;padding:28px;text-align:center;color:#fff;margin:20px 0}
.buy-box h3{font-size:1.3rem;margin-bottom:8px}
.buy-box p{opacity:.9;margin-bottom:18px;font-size:.95rem}
.btn-buy{display:inline-block;background:#f39c12;color:#fff;padding:14px 40px;border-radius:8px;font-size:1.1rem;font-weight:700;margin:0 8px}
.btn-buy:hover{background:#d68910;text-decoration:none;color:#fff}
.article{background:#fff;border-radius:10px;padding:28px;margin:20px 0;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.article h2{font-size:1.2rem;font-weight:700;margin:20px 0 10px;color:var(--dark)}
.article h2:first-child{margin-top:0}
.article p{font-size:.95rem;line-height:1.8;margin-bottom:14px;color:#444}
.badge{display:inline-block;background:var(--red);color:#fff;font-size:.75rem;padding:3px 8px;border-radius:4px;margin-right:6px;font-weight:600}
.tag{background:#f0f0f0;color:#555;padding:4px 10px;border-radius:20px;font-size:.8rem;margin:3px;display:inline-block}
.rating{color:#f39c12;font-size:1.1rem;margin:8px 0}
footer{background:var(--dark);color:#aaa;text-align:center;padding:30px 20px;margin-top:60px;font-size:.85rem}
footer a{color:#ccc}
@media(max-width:640px){.hero h1{font-size:1.5rem}.pros-cons{grid-template-columns:1fr}.header-inner{flex-direction:column;gap:10px}.grid{grid-template-columns:1fr 1fr}}
@media(max-width:400px){.grid{grid-template-columns:1fr}}