:root{
  --primary:#0e5aa7;
  --primary-dark:#0a4078;
  --primary-light:#e8f1fa;
  --accent:#12a89d;
  --accent-dark:#0f948a;
  --accent-soft:#e6f7f5;
  --ink:#1f2a37;
  --muted:#6b7785;
  --bg:#ffffff;
  --bg-soft:#f4f8fc;
  --border:#e3e9f0;
  --radius:12px;
  --shadow:0 8px 26px rgba(14,90,167,.10);
  --shadow-sm:0 2px 10px rgba(14,90,167,.06);
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Segoe UI",system-ui,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 18px}
.center{margin:0 auto}

/* ===== Header ===== */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;box-shadow:0 1px 6px rgba(0,0,0,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 0}
.logo{display:flex;align-items:center;gap:12px;min-width:0}
.logo img{height:52px;width:auto}
.logo .name{font-size:22px;font-weight:800;color:var(--primary-dark);letter-spacing:1px;white-space:nowrap}
.logo .slogan{font-size:12px;color:var(--muted);white-space:nowrap}
.header-contact{text-align:right;color:var(--muted);font-size:13px;line-height:1.6}
.header-contact .tel{font-size:20px;font-weight:800;color:var(--accent)}
.nav-wrap{background:linear-gradient(90deg,var(--primary),var(--primary-dark))}
.nav{display:flex;align-items:center}
.nav a{color:#fff;padding:14px 22px;font-size:16px;font-weight:600;position:relative;transition:.2s;white-space:nowrap}
.nav a:hover,.nav a.active{background:rgba(255,255,255,.14)}
.nav a.active::after{content:"";position:absolute;left:18px;right:18px;bottom:0;height:3px;background:var(--accent)}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:24px;cursor:pointer;padding:10px 16px}

/* ===== Hero / Banner ===== */
.hero{position:relative;min-height:420px;display:flex;align-items:center;color:#fff;
  background-size:cover;background-position:center;background-color:var(--primary-dark)}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(10,64,120,.88),rgba(14,90,167,.45) 60%,rgba(18,168,157,.25))}
.hero .container{position:relative;z-index:2;padding:64px 18px}
.hero h1{font-size:40px;font-weight:800;margin-bottom:16px;text-shadow:0 2px 14px rgba(0,0,0,.3);line-height:1.25}
.hero p{font-size:17px;max-width:640px;opacity:.96;margin-bottom:26px}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:13px 30px;border-radius:40px;font-weight:700;transition:.2s;box-shadow:0 10px 24px rgba(18,168,157,.35)}
.btn:hover{transform:translateY(-2px);background:var(--accent-dark)}
.btn.ghost{background:transparent;border:2px solid #fff}
.btn.ghost:hover{background:rgba(255,255,255,.16)}

/* ===== Sections ===== */
.section{padding:58px 0}
.section.soft{background:var(--bg-soft)}
.section-title{text-align:center;margin-bottom:36px}
.section-title h2{font-size:28px;color:var(--primary-dark);font-weight:800}
.section-title h2::after{content:"";display:block;width:54px;height:4px;background:var(--accent);margin:12px auto 0;border-radius:2px}
.section-title p{color:var(--muted);margin-top:8px}

/* ===== Product grid ===== */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.22s;display:flex;flex-direction:column;box-shadow:var(--shadow-sm)}
.card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:var(--accent)}
.card .thumb{aspect-ratio:1/1;background:var(--bg-soft);overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:contain;padding:10px;transition:.3s}
.card:hover .thumb img{transform:scale(1.04)}
.card .thumb .cat-ico{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:46px;color:var(--primary)}
.card .body{padding:14px 16px;flex:1;display:flex;flex-direction:column}
.card .body h3{font-size:16px;line-height:1.4;margin-bottom:8px;color:var(--ink)}
.tag{display:inline-block;font-size:12px;color:var(--primary);background:var(--primary-light);padding:2px 10px;border-radius:20px;margin-bottom:8px}
.tag.accent{color:var(--accent);background:var(--accent-soft)}
.card .meta{color:var(--muted);font-size:13px;margin-top:auto}

/* 类型卡片（首页产品中心）图片铺满 */
.card.type-card .thumb{aspect-ratio:16/10}
.card.type-card .thumb img{object-fit:cover;padding:0}
.card.type-card .body{background:linear-gradient(180deg,#fff,#fafcff)}
.card.type-card .body h3{font-size:18px;color:var(--primary-dark)}

/* ===== Filters ===== */
.filters{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:28px}
.filters button{border:1px solid var(--border);background:#fff;color:var(--muted);padding:8px 18px;border-radius:30px;cursor:pointer;font-size:14px;transition:.2s}
.filters button:hover{border-color:var(--primary);color:var(--primary)}
.filters button.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ===== Pager ===== */
.pager{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;align-items:center;margin:30px 0 6px}
.pager .pg{border:1px solid var(--border);background:#fff;color:var(--ink);min-width:38px;height:38px;padding:0 12px;border-radius:8px;cursor:pointer;font-size:14px;transition:.18s}
.pager .pg:hover:not(.disabled):not(.active){border-color:var(--primary);color:var(--primary)}
.pager .pg.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.pager .pg.disabled{opacity:.45;cursor:not-allowed}
.pager .pg-ellipsis{color:var(--muted);padding:0 4px}
.pager .pg-info{margin-left:10px;color:var(--muted);font-size:13px}

/* ===== News list ===== */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{display:flex;gap:18px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;transition:.2s}
.news-item:hover{box-shadow:var(--shadow)}
.news-item .date{background:var(--primary-light);color:var(--primary-dark);border-radius:8px;min-width:64px;height:64px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.news-item .date span{font-size:20px}.news-item .date em{font-style:normal;font-size:12px}
.news-item h3{font-size:17px;margin-bottom:6px;line-height:1.4}
.news-item p{color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ===== Breadcrumb ===== */
.crumb{padding:14px 0;color:var(--muted);font-size:13px}
.crumb a:hover{color:var(--primary)}

/* ===== Detail ===== */
.detail{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.gallery .main-img{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-soft);aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;padding:18px}
.gallery .main-img img{max-height:100%;object-fit:contain}
.thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.thumbs img{width:74px;height:74px;object-fit:contain;border:1px solid var(--border);border-radius:8px;padding:6px;cursor:pointer;background:#fff}
.thumbs img.active{border-color:var(--accent)}
.detail-info h1{font-size:26px;color:var(--primary-dark);margin-bottom:10px;line-height:1.3}
.detail-info .badges{margin-bottom:14px;display:flex;gap:8px;flex-wrap:wrap}
.detail-info .summary{background:var(--bg-soft);border-left:4px solid var(--accent);padding:12px 16px;border-radius:0 8px 8px 0;color:#33414f;margin-bottom:18px}
.detail-info .params{width:100%;border-collapse:collapse;margin-bottom:18px}
.detail-info .params th,.detail-info .params td{border:1px solid var(--border);padding:8px 12px;font-size:14px;text-align:left}
.detail-info .params th{background:var(--primary-light);color:var(--primary-dark);width:120px}
.article{max-width:860px;margin:0 auto;line-height:1.9;font-size:16px;color:#2b3640}
.article h1{font-size:28px;color:var(--primary-dark);margin-bottom:10px;line-height:1.35}
.article .meta{color:var(--muted);font-size:14px;margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.article img{margin:18px auto;border-radius:8px;max-width:100%}
.article p{margin-bottom:14px}

/* ===== Feature / advantages ===== */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;text-align:center;transition:.22s}
.feat:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.feat .ico{width:56px;height:56px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 14px}
.feat h3{font-size:18px;margin-bottom:8px;color:var(--primary-dark)}
.feat p{color:var(--muted);font-size:14px}

/* ===== Contact ===== */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-info li{list-style:none;padding:12px 0;border-bottom:1px dashed var(--border);display:flex;gap:12px}
.contact-info .k{color:var(--primary);font-weight:700;min-width:74px}
.map-box{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#eaf1f6;min-height:380px}
.baidu-map{height:380px;width:100%;background:#eaf1f6}
.map-fallback{padding:36px 24px;text-align:center;background:linear-gradient(135deg,#eaf3fb,#f4f8fc);min-height:380px;display:flex;flex-direction:column;align-items:center;justify-content:center}
.map-fallback .map-pin{font-size:44px;line-height:1}
.map-fallback .map-addr{font-size:17px;font-weight:700;margin:14px 0 4px;color:var(--ink)}
.map-fallback .map-coord{color:var(--muted);font-size:13px;margin-bottom:18px}

/* ===== Footer ===== */
.site-footer{background:var(--primary-dark);color:#cdd9e6;margin-top:40px}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;padding:46px 0}
.footer-top h4{color:#fff;font-size:16px;margin-bottom:14px}
.footer-top a{color:#cdd9e6;font-size:14px;line-height:2}
.footer-top a:hover{color:var(--accent)}
.footer-top p{font-size:14px;line-height:1.9}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;text-align:center;font-size:13px;color:#9fb2c6}

/* ===== Responsive ===== */
@media(max-width:980px){
  .grid{grid-template-columns:repeat(3,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .detail,.contact-wrap{grid-template-columns:1fr}
}
@media(max-width:760px){
  .nav-wrap{position:relative}
  .nav{flex-direction:column;align-items:stretch;display:none}
  .nav.open{display:flex}
  .nav a{padding:12px 18px;border-top:1px solid rgba(255,255,255,.08)}
  .nav-toggle{display:block;position:absolute;right:12px;top:-52px}
  .header-inner{flex-wrap:wrap;gap:8px}.header-contact{text-align:left}
  .hero{min-height:320px}.hero h1{font-size:28px}
  .grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:22px}
  .section{padding:44px 0}
}
@media(max-width:460px){
  .grid{grid-template-columns:1fr}
  .hero h1{font-size:24px}
  .news-item{flex-direction:column;gap:10px}
  .news-item .date{flex-direction:row;width:auto;height:auto;padding:6px 12px;gap:6px}
}