* {margin:0;padding:0;box-sizing:border-box}
body {font-family:Arial,sans-serif;background:#f9f9f9;color:#222;line-height:1.6}
.container {max-width:1200px;margin:0 auto;padding:0 20px}
.flex-box {display:flex;justify-content:space-between;align-items:center}

/* 头部 */
.header {background:#fff;padding:18px 0;box-shadow:0 2px 8px rgba(0,0,0,0.06);position:sticky;top:0;z-index:99}
.logo {font-size:22px;font-weight:bold}
.nav {display:flex;gap:28px;align-items:center}
.nav a {color:#222;text-decoration:none;font-size:15px}
.lang-btn {border:1px solid #222;background:none;padding:6px 12px;border-radius:4px;cursor:pointer}

/* Banner */
.hero-banner {height:550px;background:#f1f1f1;display:flex;align-items:center;justify-content:center}
.banner-text {max-width:700px;text-align:center}
.banner-text h1 {font-size:42px;margin-bottom:15px}
.banner-text p {font-size:18px;color:#555;margin-bottom:25px}
.btn {display:inline-block;padding:12px 28px;background:#111;color:#fff;text-decoration:none;border-radius:4px}
.primary-btn {background:#111}
.small-btn {padding:8px 18px;font-size:14px}

/* 产品 */
.hot-products {padding:60px 0}
.section-title {text-align:center;font-size:28px;margin-bottom:35px}
.product-grid {display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.product-item {background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,0.05)}
.product-item img {width:100%;height:260px;object-fit:cover}
.product-info {padding:16px}
.product-info h4 {margin-bottom:8px}
.product-info p {color:#666;margin-bottom:12px}

/* 详情页图片 */
.desc-content img {
    max-width: 100% !important;
    height: auto !important;
    margin: 10px 0;
    border-radius: 8px;
}

/* 底部 */
.footer {background:#111;color:#fff;padding:50px 0 20px;margin-top:0}
.footer-grid {display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.footer ul {list-style:none}
.footer li {margin:8px 0}
.footer a {color:#ccc;text-decoration:none}
.copyright {text-align:center;color:#888}

/* 响应式 */
@media(max-width:768px){
    .product-grid {grid-template-columns:1fr 1fr}
    .about-grid {grid-template-columns:1fr}
    .footer-grid {grid-template-columns:1fr}
}