:root{
  --primary:#0d4a8c;
  --primary-d:#083a70;
  --accent:#ff7a18;
  --ink:#0f1b2d;
  --text:#3a4657;
  --muted:#6b7787;
  --line:#e3e8ef;
  --soft:#f5f7fa;
  --radius:3px;
  --wrap:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);background:#fff;font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.25;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.ic{width:18px;height:18px;flex:none;vertical-align:-3px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px;width:100%}
.muted{color:var(--muted)}
.sp{flex:1}
.noimg{display:block;padding:40px 10px;text-align:center;color:#9aa6b5;background:var(--soft);font-size:13px}

/* ---------- 顶部条 ---------- */
.topbar{background:var(--ink);color:#c9d4e2;font-size:13px}
.topbar-in{display:flex;align-items:center;gap:14px;height:38px}
.topbar a{display:inline-flex;align-items:center;gap:6px;color:#c9d4e2}
.topbar a:hover{color:#fff}

/* ---------- 头部 ---------- */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-in{display:flex;align-items:center;gap:28px;height:74px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--ink);letter-spacing:.01em}
.brand .logo{max-height:38px;width:auto;object-fit:contain}
.site-nav{display:flex;gap:26px;margin-left:auto}
.site-nav a{position:relative;font-size:15px;font-weight:600;color:var(--text);padding:6px 0}
.site-nav a:hover{color:var(--primary)}
.site-nav a.active{color:var(--primary)}
.site-nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--accent)}
.hdr-cta{background:var(--accent);color:#fff;font-weight:700;font-size:14px;padding:10px 20px;border-radius:var(--radius);white-space:nowrap}
.hdr-cta:hover{background:#e96a08}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:700;
  padding:13px 26px;border-radius:var(--radius);border:1px solid transparent;cursor:pointer;transition:.18s;line-height:1}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-d)}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:#eaf1fa}
.btn-outline-light{border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn-wa{background:#25d366;color:#fff}
.btn-wa:hover{background:#1ebe5b}
.btn-mail{background:var(--primary);color:#fff}
.btn-mail:hover{background:var(--primary-d)}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(120deg,#0d4a8c 0%,#083a70 55%,#0f1b2d 100%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;
  background:radial-gradient(900px 380px at 78% 15%,rgba(255,122,24,.28),transparent 70%)}
.hero-in{position:relative;z-index:1;padding:84px 20px 88px;max-width:900px}
.hero .badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);color:#fff;font-size:13px;font-weight:600;padding:7px 14px;
  border-radius:99px;margin-bottom:20px}
.hero h1{color:#fff;font-size:44px;line-height:1.14;letter-spacing:-.01em}
.hero .lead{color:#d6e2f0;font-size:17px;margin-top:18px;max-width:660px}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}

/* ---------- 数据条 ---------- */
.stats{background:var(--soft);border-bottom:1px solid var(--line)}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line)}
.stat-item{background:var(--soft);padding:30px 18px;text-align:center}
.stat-num{display:block;font-size:34px;font-weight:800;color:var(--primary);line-height:1.1;letter-spacing:-.02em}
.stat-label{display:block;font-size:13px;color:var(--muted);margin-top:8px}

/* ---------- 区块通用 ---------- */
.sec{padding:64px 0}
.sec-tight{padding:34px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap}
.sec-head h2{font-size:29px;margin-top:8px}
.sec-head p{color:var(--muted);margin-top:10px;max-width:620px}
.sec-head.center{display:block;text-align:center}
.sec-head.center p{margin-left:auto;margin-right:auto}
.kicker{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.more{font-size:14px;font-weight:700;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.more:hover{color:var(--accent)}

/* ---------- 商品网格 ---------- */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.p-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.2s;height:100%}
.p-card:hover{border-color:var(--primary);box-shadow:0 8px 24px rgba(13,74,140,.13);transform:translateY(-3px)}
.p-img{position:relative;aspect-ratio:1/1;background:var(--soft);overflow:hidden}
.p-img img{width:100%;height:100%;object-fit:cover;transition:.3s}
.p-card:hover .p-img img{transform:scale(1.05)}
.p-tag{position:absolute;top:10px;left:10px;background:var(--accent);color:#fff;font-size:11px;font-weight:700;
  padding:4px 9px;border-radius:2px}
.p-body{padding:16px 16px 18px;display:flex;flex-direction:column;flex:1}
.p-sku{font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
.p-body h3{font-size:15px;margin-top:6px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.p-sum{font-size:13px;color:var(--muted);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.p-meta{display:flex;align-items:baseline;gap:10px;margin-top:auto;padding-top:12px;flex-wrap:wrap}
.p-price{font-size:16px;font-weight:800;color:var(--primary)}
.p-moq{font-size:12px;color:var(--muted)}
.p-go{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--accent);margin-top:10px}

/* ---------- 分类卡 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cat-card{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:24px 26px;
  background:var(--soft);border:1px solid var(--line);border-left:3px solid var(--primary);border-radius:var(--radius);transition:.2s}
.cat-card:hover{background:#fff;box-shadow:0 6px 20px rgba(13,74,140,.12)}
.cat-card h3{font-size:17px}
.cat-card .cnt{font-size:13px;color:var(--muted);margin-top:4px}
.cat-card i{color:var(--accent);display:flex}

/* ---------- 优势 ---------- */
.why-sec{background:var(--soft)}
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.why-item{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:.2s}
.why-item:hover{box-shadow:0 8px 24px rgba(13,74,140,.12);border-color:var(--primary)}
.why-item i{color:var(--primary);display:flex;margin-bottom:14px}
.why-item i .ic{width:26px;height:26px}
.why-item h3{font-size:16px}
.why-item p{font-size:14px;color:var(--muted);margin-top:9px}
.why-num{position:absolute;top:18px;right:20px;font-size:26px;font-weight:800;color:rgba(13,74,140,.10)}

/* ---------- 关于 ---------- */
.about{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.about-lead{font-size:17px;color:var(--text);margin:16px 0 22px}
.about-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}
.about-facts div{background:var(--soft);border-radius:var(--radius);padding:16px}
.about-facts b{display:block;color:var(--primary);font-size:15px}
.about-facts span{font-size:12px;color:var(--muted)}
.prose{font-size:15px;color:var(--text)}
.prose h2{font-size:21px;margin:26px 0 12px}
.prose h3{font-size:17px;margin:20px 0 10px}
.prose p{margin-bottom:12px}
.prose ul{margin:0 0 14px;list-style:disc;padding-left:20px}
.prose li{margin-bottom:6px}
.prose strong{color:var(--ink)}

/* ---------- 应用场景 ---------- */
.apps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.app-card{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.app-card .app-img{aspect-ratio:4/3;background:var(--soft)}
.app-card .app-img img{width:100%;height:100%;object-fit:cover}
.app-num{position:absolute;top:12px;left:12px;width:32px;height:32px;border-radius:50%;background:var(--primary);
  color:#fff;font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center}
.app-card .app-t{font-size:14px;font-weight:700;padding:14px 16px;color:var(--ink);line-height:1.35}

/* ---------- 新闻 ---------- */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.2s}
.news-item:hover{border-color:var(--primary);box-shadow:0 8px 24px rgba(13,74,140,.12)}
.news-date{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.04em}
.news-item h3{font-size:16px;margin:10px 0;line-height:1.4}
.news-item p{font-size:14px;color:var(--muted)}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(120deg,var(--primary) 0%,var(--primary-d) 60%,var(--ink) 100%);color:#fff}
.cta-in{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:52px 20px;flex-wrap:wrap}
.cta h2{color:#fff;font-size:28px}
.cta p{color:#cfdeef;margin-top:10px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页头 ---------- */
.page-head{background:var(--soft);border-bottom:1px solid var(--line);padding:44px 0}
.page-head h1{font-size:34px;margin-top:8px}
.page-head p{color:var(--muted);margin-top:12px;max-width:700px}

/* ---------- 分类导航 ---------- */
.cat-nav{background:#fff;border-bottom:1px solid var(--line)}
.cat-nav-in{display:flex;align-items:center;gap:10px;padding:14px 20px;flex-wrap:wrap}
.cat-nav-label{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.cat-nav a{font-size:14px;font-weight:600;padding:6px 14px;border:1px solid var(--line);border-radius:99px;transition:.18s}
.cat-nav a:hover{border-color:var(--primary);color:var(--primary)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:22px 0}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .ic{width:13px;height:13px;opacity:.6}

/* ---------- 详情 ---------- */
.detail{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:start;padding-bottom:20px}
.gallery-main{border:1px solid var(--line);border-radius:var(--radius);background:var(--soft);overflow:hidden;aspect-ratio:1/1}
.gallery-main img{width:100%;height:100%;object-fit:cover}
.thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.thumbs img{width:74px;height:74px;object-fit:cover;border:2px solid var(--line);border-radius:var(--radius);cursor:pointer;transition:.18s}
.thumbs img.on{border-color:var(--accent)}
.d-info h1{font-size:29px;line-height:1.25}
.d-sku{font-size:13px;color:var(--muted);margin-top:10px}
.d-sku b{color:var(--ink)}
.d-price-box{background:var(--soft);border-left:3px solid var(--accent);padding:16px 20px;margin:20px 0;border-radius:var(--radius)}
.d-price{font-size:26px;font-weight:800;color:var(--primary)}
.d-price-note{display:block;font-size:12px;color:var(--muted);margin-top:4px}
.d-sum{font-size:15px;margin-bottom:18px}
.d-facts{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.d-facts div{background:#fff;padding:12px 16px}
.d-facts b{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.d-facts span{font-size:14px;color:var(--ink);font-weight:600}
.d-actions{display:flex;gap:12px;margin:22px 0;flex-wrap:wrap}
.d-points{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--muted)}
.d-points li{display:flex;align-items:center;gap:8px}
.d-points .ic{color:#2e9e5b}
.detail-cards{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:34px 0}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.info-card h3{display:flex;align-items:center;gap:9px;font-size:17px;margin-bottom:16px}
.info-card h3 .ic{color:var(--primary)}
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th,.tbl td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
.tbl th{width:44%;color:var(--muted);font-weight:600}
.tbl td{color:var(--ink)}
.tbl-tiers thead th{background:var(--soft);color:var(--ink);font-weight:700;width:auto}
.tbl-tiers td b{color:var(--primary)}
.tbl-note{font-size:12px;color:var(--muted);margin-top:12px}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:26px;padding:44px 0 64px;align-items:start}
.contact-side{display:flex;flex-direction:column;gap:18px}
.c-strong{font-size:16px;font-weight:700;color:var(--ink)}
.c-line{font-size:14px;color:var(--muted);margin-top:6px}
.c-line a{color:var(--primary);font-weight:600}
.c-line a:hover{color:var(--accent)}
.c-tip{background:var(--soft)}
.tip-list{display:flex;flex-direction:column;gap:9px;font-size:14px;color:var(--text)}
.tip-list li{display:flex;align-items:center;gap:9px}
.tip-list .ic{color:#2e9e5b}
.form{display:flex;flex-direction:column;gap:16px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fg{display:flex;flex-direction:column;gap:7px}
.fg label{font-size:13px;font-weight:700;color:var(--ink)}
.fg input,.fg textarea{width:100%;border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;
  font:inherit;font-size:14px;color:var(--ink);background:#fff;transition:.18s}
.fg input:focus,.fg textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(13,74,140,.10)}
.fg textarea{min-height:130px;resize:vertical}
.row{display:flex;gap:12px;flex-wrap:wrap}
.form-note{font-size:12px;color:var(--muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#aebacb;padding:56px 0 0;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:#fff}
.foot-brand .logo{max-height:34px;width:auto;background:#fff;border-radius:2px;padding:3px}
.foot-about{color:#aebacb;margin-top:14px;max-width:380px}
.foot-line{color:#8b98a9;margin-top:10px}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.foot-links li{margin-bottom:9px}
.foot-links a{color:#aebacb}
.foot-links a:hover{color:#fff}
.contact-line{display:flex;align-items:flex-start;gap:9px;margin-bottom:11px;color:#aebacb}
.contact-line .ic{color:var(--accent);margin-top:2px}
.contact-line a{color:#aebacb}
.contact-line a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 20px;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8b98a9}

/* ---------- 响应式 ---------- */
@media(max-width:1000px){
  .grid{grid-template-columns:repeat(3,1fr)}
  .apps{grid-template-columns:repeat(2,1fr)}
  .why{grid-template-columns:repeat(2,1fr)}
  .detail{grid-template-columns:1fr;gap:28px}
  .detail-cards{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:820px){
  .site-nav{display:none}
  .hero h1{font-size:32px}
  .hero-in{padding:56px 20px 60px}
  .stats-in{grid-template-columns:repeat(2,1fr)}
  .grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:1fr}
  .news-list{grid-template-columns:1fr}
  .about{grid-template-columns:1fr;gap:28px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .sec{padding:46px 0}
  .form-row{grid-template-columns:1fr}
}
@media(max-width:560px){
  .grid{grid-template-columns:1fr}
  .apps{grid-template-columns:1fr}
  .why{grid-template-columns:1fr}
  .stats-in{grid-template-columns:1fr}
  .d-facts{grid-template-columns:1fr}
  .cta-in{padding:38px 20px}
}