:root{
  --primary:#FF7A1A;
  --primary-dark:#E8680A;
  --primary-light:#FFF1E6;
  --text:#222;
  --text-sub:#666;
  --bg:#fff;
  --bg-gray:#F7F7F7;
  --border:#eee;
  --radius:12px;
  --shadow:0 2px 12px rgba(0,0,0,.06);
  --shadow-hover:0 6px 20px rgba(255,122,26,.18);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.6}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;border-radius:999px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:.2s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow-hover)}
.btn-outline{background:#fff;color:var(--primary);border:1.5px solid var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-ghost{background:#fff;color:var(--text-sub);border:1px solid var(--border)}
.tag{display:inline-block;padding:2px 10px;border-radius:6px;font-size:12px;background:var(--primary-light);color:var(--primary)}

/* 顶部公告栏 */
.topbar{background:var(--primary);color:#fff;font-size:13px;text-align:center;padding:7px 12px}
.topbar a{text-decoration:underline}

/* 导航 */
.header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;height:66px;gap:28px}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--primary);flex-shrink:0}
.logo .logo-icon{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#FFB067);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;font-weight:800}
.logo .sub{font-size:11px;font-weight:500;color:var(--text-sub);display:block;line-height:1}
.nav-links{display:flex;gap:4px;flex:1;overflow-x:auto}
.nav-links a{padding:8px 14px;border-radius:8px;font-size:15px;color:var(--text);white-space:nowrap;transition:.15s}
.nav-links a:hover,.nav-links a.active{background:var(--primary-light);color:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.search-box{display:flex;align-items:center;background:var(--bg-gray);border-radius:999px;padding:0 14px;height:40px}
.search-box input{border:none;outline:none;background:transparent;font-size:14px;width:150px}
.search-box svg{color:var(--text-sub)}

/* Hero */
.hero{background:linear-gradient(120deg,#FFF7EF 0%,#FFE8D1 100%);padding:60px 0 70px}
.hero-inner{display:flex;align-items:center;gap:50px}
.hero-text{flex:1}
.hero-text h1{font-size:40px;line-height:1.25;font-weight:800;margin-bottom:16px}
.hero-text h1 .hl{color:var(--primary)}
.hero-text p{font-size:17px;color:var(--text-sub);margin-bottom:28px;max-width:540px}
.hero-btns{display:flex;gap:14px}
.hero-stats{display:flex;gap:36px;margin-top:36px}
.hero-stats .num{font-size:28px;font-weight:800;color:var(--primary)}
.hero-stats .label{font-size:13px;color:var(--text-sub)}
.hero-img{flex:1;display:flex;justify-content:center}
.hero-img img{max-height:340px;border-radius:16px;box-shadow:0 20px 50px rgba(0,0,0,.12)}

/* 分类导航 */
.cat-nav{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:66px;z-index:99}
.cat-nav-inner{display:flex;gap:6px;overflow-x:auto;padding:12px 0}
.cat-nav-inner .chip{padding:8px 18px;border-radius:999px;font-size:14px;background:var(--bg-gray);cursor:pointer;white-space:nowrap;border:1px solid transparent;transition:.15s}
.cat-nav-inner .chip:hover{border-color:var(--primary);color:var(--primary)}
.cat-nav-inner .chip.active{background:var(--primary);color:#fff}

/* 区块标题 */
.section{padding:50px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:28px}
.section-head h2{font-size:26px;font-weight:800}
.section-head .more{color:var(--primary);font-size:14px}
.section-head .desc{color:var(--text-sub);font-size:14px;margin-top:4px}

/* 产品网格（商城式卡片） */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:22px}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.22s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--primary)}
.card .thumb{position:relative;aspect-ratio:4/5;overflow:hidden;background:var(--bg-gray)}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:.3s}
.card:hover .thumb img{transform:scale(1.05)}
.card .thumb .badge{position:absolute;top:10px;left:10px;background:var(--primary);color:#fff;font-size:11px;padding:2px 8px;border-radius:4px}
.card .body{padding:14px 16px 16px;display:flex;flex-direction:column;flex:1}
.card .body h3{font-size:16px;font-weight:700;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.card .specs{font-size:12px;color:var(--text-sub);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px}
.card .body .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px}
.card .consult-btn{flex:1;text-align:center;padding:8px 0;border-radius:8px;background:var(--primary);color:#fff;font-size:13px;font-weight:600}
.card .consult-btn:hover{background:var(--primary-dark)}

/* 详情页 */
.breadcrumb{font-size:13px;color:var(--text-sub);padding:16px 0}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--primary)}
.detail{display:flex;gap:40px;padding:10px 0 60px}
.detail-img{flex:1;max-width:480px}
.detail-img img{border-radius:16px;box-shadow:var(--shadow)}
.detail-info{flex:1}
.detail-info h1{font-size:28px;font-weight:800;margin:10px 0}
.detail-info .meta{display:flex;gap:8px;margin-bottom:16px}
.detail-info .spec-table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}
.detail-info .spec-table td{padding:10px 12px;border-bottom:1px solid var(--border)}
.detail-info .spec-table td:first-child{color:var(--text-sub);width:90px;white-space:nowrap}
.consult-panel{background:var(--primary-light);border-radius:var(--radius);padding:20px;margin-top:20px}
.consult-panel .t{font-weight:700;margin-bottom:6px}
.consult-panel .phones{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0}
.consult-panel .phone{background:#fff;padding:6px 14px;border-radius:8px;font-weight:700;color:var(--primary)}

/* 新闻 */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{display:flex;gap:20px;padding:20px;border:1px solid var(--border);border-radius:var(--radius);transition:.2s}
.news-item:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.news-date{flex-shrink:0;text-align:center;background:var(--primary);color:#fff;border-radius:10px;padding:8px 0;width:64px;height:64px;display:flex;flex-direction:column;justify-content:center}
.news-date .d{font-size:22px;font-weight:800;line-height:1}
.news-date .m{font-size:12px}
.news-body h3{font-size:17px;font-weight:700;margin-bottom:6px}
.news-body p{font-size:14px;color:var(--text-sub)}

/* 咨询页 / 关于 */
.about-grid{display:flex;gap:40px}
.about-text{flex:1;font-size:15px;color:var(--text-sub)}
.about-text h3{margin:20px 0 8px;color:var(--text);font-size:18px}
.contact-card{flex-shrink:0;width:340px;background:var(--primary-light);border-radius:16px;padding:28px}
.contact-card .row{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-size:15px}
.contact-card .row b{color:var(--primary)}

/* 页脚 */
.footer{background:#2B2B2B;color:#bbb;padding:50px 0 0;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;padding-bottom:40px}
.footer h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer .logo{color:#fff}
.footer p{font-size:14px;line-height:1.8}
.footer a{display:block;font-size:14px;margin-bottom:10px;color:#bbb}
.footer a:hover{color:var(--primary)}
.footer .phone{color:var(--primary);font-weight:700;font-size:18px}
.footer-bottom{border-top:1px solid #3a3a3a;padding:18px 0;text-align:center;font-size:13px;color:#777}

/* 弹窗 */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;align-items:center;justify-content:center;z-index:200}
.modal.show{display:flex}
.modal-box{background:#fff;border-radius:16px;padding:30px;width:90%;max-width:400px;text-align:center}
.modal-box h3{font-size:20px;margin-bottom:8px}
.modal-box .qrcode{width:180px;height:180px;background:var(--bg-gray);margin:16px auto;border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--text-sub);font-size:13px}
.modal-box .phones{margin:12px 0}
.modal-box .phone-item{font-size:18px;font-weight:700;color:var(--primary);margin:6px 0}
.modal-box .close{margin-top:12px;color:var(--text-sub);font-size:13px;cursor:pointer}

/* 返回顶部 */
.backtop{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:none;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow);z-index:150}

/* ============ 商城式布局（左侧菜单 + 右侧商品区） ============ */
.mall-layout{display:flex;gap:24px;padding:24px 0}
.mall-side{flex-shrink:0;width:220px;position:sticky;top:86px;align-self:flex-start;max-height:calc(100vh - 100px);overflow-y:auto}
.mall-side::-webkit-scrollbar{width:0}
.mall-menu{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.mall-menu .menu-title{font-size:15px;font-weight:800;color:#fff;background:var(--primary);padding:13px 18px}
.mall-menu .menu-item{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;font-size:14px;color:var(--text);border-bottom:1px solid var(--bg-gray);cursor:pointer;transition:.15s}
.mall-menu .menu-item:last-child{border-bottom:none}
.mall-menu .menu-item:hover{background:var(--primary-light);color:var(--primary)}
.mall-menu .menu-item.active{background:var(--primary-light);color:var(--primary);font-weight:700;border-left:3px solid var(--primary)}
.mall-menu .menu-item .cnt{font-size:12px;color:var(--text-sub);background:var(--bg-gray);padding:1px 8px;border-radius:999px}
.mall-menu .menu-item.active .cnt{background:var(--primary);color:#fff}
.mall-side .consult-box{margin-top:14px;background:var(--primary-light);border-radius:var(--radius);padding:16px}
.mall-side .consult-box .t{font-weight:700;font-size:14px;margin-bottom:6px}
.mall-side .consult-box .p{font-size:13px;color:var(--primary);font-weight:700;line-height:1.7}

.mall-main{flex:1;min-width:0}
.mall-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px;flex-wrap:wrap}
.mall-toolbar .crumb{font-size:15px;font-weight:700}
.mall-toolbar .crumb span{color:var(--text-sub);font-weight:400;font-size:13px}
.mall-toolbar .toolbar-right{display:flex;align-items:center;gap:10px}
.mall-toolbar .sort{display:flex;gap:6px}
.mall-toolbar .sort .s{font-size:13px;padding:6px 14px;border-radius:999px;background:var(--bg-gray);cursor:pointer;border:1px solid transparent}
.mall-toolbar .sort .s.active{background:var(--primary);color:#fff}

@media(max-width:768px){
  .nav-links{display:none}
  .hero-inner{flex-direction:column;gap:30px}
  .hero-text h1{font-size:30px}
  .detail{flex-direction:column}
  .detail-img{max-width:100%}
  .footer-grid{grid-template-columns:1fr 1fr}
  .about-grid{flex-direction:column}
  .contact-card{width:100%}
  .search-box input{width:100px}
  .mall-layout{flex-direction:column}
  .mall-side{width:100%;position:static;max-height:none}
  .mall-menu{display:flex;overflow-x:auto}
  .mall-menu .menu-title{display:none}
  .mall-menu .menu-item{flex-shrink:0;border-bottom:none;border-right:1px solid var(--bg-gray)}
}
}