*{margin:0;padding:0;box-sizing:border-box}
:root(--w:#fafafa;--ws:#f0f0f0;--g:#d4d4d4;--d:#4a4a4a;--l:#a0a0a0;--bg:#f5f5f5)
body{font-family:'Microsoft YaHei',sans-serif;background:var(--bg);color:#3d3d3d;line-height:1.6}
.top-bar{background:var(--d);color:var(--w);font-size:12px;text-align:center;padding:7px 20px}
.header{background:linear-gradient(180deg,var(--d),#666);padding:30px 0}
.header-inner{max-width:1000px;margin:0 auto;padding:0 20px}
.brand{display:flex;align-items:center;gap:14px}
.icon{font-size:44px;filter:drop-shadow(0 0 8px rgba(200,200,200,0.5))}
.brand h1{font-size:clamp(18px,3.5vw,28px);color:var(--w);letter-spacing:2px}
.brand p{color:var(--g);font-size:13px}
.nav{background:#333;position:sticky;top:0;z-index:100}
.nav-inner{max-width:1000px;margin:0 auto;display:flex;justify-content:center;flex-wrap:wrap}
.nav-inner a{color:#ccc;padding:12px 22px;text-decoration:none;font-size:14px;transition:background 0.2s}
.nav-inner a:hover,.nav-inner a.active{background:rgba(200,200,200,0.15);color:#fff}
.hero{background:linear-gradient(135deg,#333,#555);padding:40px 20px;display:flex;align-items:center;gap:30px;flex-wrap:wrap}
.hero-text{flex:1;min-width:250px}
.hero-text h2{font-size:clamp(20px,3.5vw,30px);color:#fff;margin-bottom:10px}
.hero-text p{color:#ccc;font-size:14px;margin-bottom:14px}
.tags{display:flex;gap:10px;flex-wrap:wrap}
.tags span{background:rgba(255,255,255,0.1);border:1px solid rgba(255,255,255,0.2);color:#ddd;padding:5px 14px;border-radius:20px;font-size:13px}
.hero-emoji{font-size:80px;opacity:0.9;filter:drop-shadow(0 0 15px rgba(255,255,255,0.3))}
.container{max-width:1000px;margin:0 auto;padding:0 20px 40px}
.section-title{text-align:center;font-size:clamp(18px,3vw,24px);color:#333;margin:40px 0 24px;letter-spacing:2px}
.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:40px}
.card{background:var(--w);border-radius:12px;padding:24px;text-align:center;box-shadow:0 2px 10px rgba(0,0,0,0.06);transition:transform 0.2s;border:1px solid #e0e0e0}
.card:hover{transform:translateY(-3px);box-shadow:0 4px 16px rgba(0,0,0,0.1)}
.card-icon{font-size:40px;margin-bottom:10px;filter:drop-shadow(0 0 6px rgba(180,180,180,0.5))}
.card h3{color:#333;font-size:15px;margin-bottom:8px}
.price{font-size:22px;font-weight:bold;color:#555;margin-bottom:8px}
.price span{font-size:13px;font-weight:normal;color:#888}
.card p{color:#777;font-size:13px;margin-bottom:12px}
.card button{background:#555;color:#fff;border:none;padding:8px 20px;border-radius:6px;font-size:13px;cursor:pointer}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:40px}
.feat{background:var(--w);border-radius:10px;padding:20px;text-align:center;border:1px solid #e0e0e0}
.feat span{font-size:32px;display:block;margin-bottom:8px}
.feat h3{color:#333;font-size:15px;margin-bottom:6px}
.feat p{color:#777;font-size:13px}
.footer{background:#333;color:#888;font-size:12px;text-align:center;padding:24px 20px;line-height:2}
@media(max-width:600px){.product-grid{grid-template-columns:1fr 1fr}}