:root{
  --navy:#003366; --navy-d:#00264d; --accent:#D04A02; --accent-l:#f26522;
  --text:#262626; --muted:#6b7280; --line:#e3e8ef; --bg:#f5f7fa; --white:#fff;
  --radius:10px; --shadow:0 2px 10px rgba(0,51,102,.07); --shadow-h:0 8px 24px rgba(0,51,102,.14);
  --wrap:1200px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",Arial,sans-serif;color:var(--text);background:var(--bg);font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--navy);text-decoration:none}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.35;color:var(--navy);font-weight:700}
h1{font-size:28px}h2{font-size:22px}h3{font-size:16px}h4{font-size:15px}
p{margin:0 0 .9em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.muted{color:var(--muted);font-size:13px}
.empty{color:var(--muted);padding:40px 0;text-align:center}

/* 按钮 */
.btn{display:inline-block;padding:10px 20px;border-radius:6px;border:1px solid transparent;font-size:14px;font-weight:700;cursor:pointer;transition:.2s;text-align:center}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-l);color:#fff;box-shadow:var(--shadow-h)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-d);color:#fff}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-ghost:hover{background:#fff;color:var(--navy)}

/* 顶部 */
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:50;box-shadow:var(--shadow)}
.header-inner{display:flex;align-items:center;gap:18px;height:74px}
.brand{display:flex;align-items:center;gap:10px;color:#fff}
.brand img{width:42px;height:42px;border-radius:6px;object-fit:cover;background:#fff}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;color:#fff;letter-spacing:.5px}
.brand-text em{font-style:normal;font-size:11px;color:#9fc3e0}
.main-nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.main-nav a{color:#dbe7f3;padding:8px 12px;border-radius:6px;font-size:14px}
.main-nav a:hover,.main-nav a.on{background:rgba(255,255,255,.14);color:#fff}
.header-cta{display:flex;align-items:center;gap:12px}
.header-cta .tel{font-size:12px;color:#9fc3e0}
.header-cta .tel b{display:block;font-size:16px;color:#fff}
.nav-toggle{display:none;background:transparent;border:0;color:#fff;font-size:22px;margin-left:auto;cursor:pointer}

/* 首页 hero */
.hero{background:linear-gradient(135deg,#003366 0%,#0a4a7a 55%,#0e5c92 100%);color:#fff;padding:52px 0 0;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;background:radial-gradient(circle,rgba(208,74,2,.45),transparent 65%)}
.hero-inner{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;position:relative;z-index:1;padding-bottom:36px}
.hero-copy .tag{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:4px 12px;border-radius:20px;font-size:12px;margin-bottom:14px}
.hero-copy h1{color:#fff;font-size:34px;margin-bottom:14px}
.hero-copy .lead{color:#d8e6f2;font-size:15px;max-width:640px}
.hero-actions{display:flex;gap:12px;margin:22px 0 18px}
.hero-points{list-style:none;padding:0;margin:0;display:grid;gap:6px;color:#cfe0ee;font-size:13px}
.hero-points li:before{content:"✓";color:var(--accent-l);margin-right:8px;font-weight:700}
.hero-card{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:0 12px 30px rgba(0,0,0,.25);color:var(--text);align-self:start}
.hero-card h3{font-size:17px;margin-bottom:14px}
.mini-form{display:grid;gap:10px}
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.16);border-radius:var(--radius) var(--radius) 0 0;overflow:hidden}
.stat-bar>div{background:rgba(0,32,64,.55);padding:16px 20px;color:#fff}
.stat-bar strong{display:block;font-size:22px;color:#fff}
.stat-bar span{font-size:12px;color:#9fc3e0}

/* 通用表单控件 */
input,select,textarea{font:inherit;color:var(--text);border:1px solid var(--line);border-radius:6px;padding:9px 12px;background:#fff;width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--navy);box-shadow:0 0 0 3px rgba(0,51,102,.08)}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}
.form-tip{font-size:12px;color:var(--muted);margin:4px 0 0}
.form-tip.ok{color:#0f7a3d}
.form-tip.err{color:#c0392b}

/* 区块 */
.section{padding:46px 0}
.section.alt{background:#fff}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:20px;border-bottom:2px solid var(--line);padding-bottom:10px}
.sec-head h2{margin:0;font-size:22px;position:relative}
.sec-head h2:after{content:"";position:absolute;left:0;bottom:-12px;width:46px;height:3px;background:var(--accent)}
.sec-head a,.sec-head span{font-size:13px;color:var(--muted)}
.page-head{background:#fff;border-bottom:1px solid var(--line);padding:26px 0 22px}
.page-head h1{margin-bottom:6px}
.page-head p{color:var(--muted);margin:0}
.breadcrumb{font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--navy)}

/* 品类 */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;gap:8px;transition:.2s}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:#cbd8e6}
.cat-card img{height:110px;object-fit:cover;border-radius:6px}
.cat-card strong{font-size:15px}
.cat-card span{font-size:12px;color:var(--muted)}

/* 产品卡 */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px)}
.thumb{display:block;height:190px;background:#eef2f7}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb .noimg{display:flex;align-items:center;justify-content:center;height:100%;color:#9aa9b8;font-size:13px;letter-spacing:4px}
.card-body{padding:13px 14px;display:flex;flex-direction:column;gap:7px;flex:1}
.card-body h3{font-size:15px;margin:0;line-height:1.5}
.card-body h3 a{color:var(--navy)}
.card-body h3 a:hover{color:var(--accent)}
.card-body .desc{font-size:12.5px;color:var(--muted);margin:0;flex:1}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:8px}
.chip{display:inline-block;background:#eef3f8;color:var(--navy);border:1px solid #dfe8f1;border-radius:20px;padding:2px 10px;font-size:12px}
.more{font-size:12.5px;color:var(--accent);font-weight:700}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
a.chip{background:#fff}
a.chip.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.filters{display:grid;grid-template-columns:2fr 1fr 1fr 1fr auto;gap:10px;background:#fff;border:1px solid var(--line);padding:14px;border-radius:var(--radius);margin-bottom:18px}
.pager{display:flex;gap:6px;justify-content:center;margin-top:28px;align-items:center;flex-wrap:wrap}
.pager a,.pager .cur,.pager .gap{padding:6px 12px;border-radius:6px;border:1px solid var(--line);background:#fff;font-size:13px}
.pager .cur{background:var(--navy);color:#fff;border-color:var(--navy)}

/* 详情页 */
.detail-grid{display:grid;grid-template-columns:420px 1fr;gap:32px;align-items:start}
.gallery .main-img{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;height:320px}
.gallery .main-img img{width:100%;height:100%;object-fit:cover}
.thumbs{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.thumbs img{width:66px;height:66px;object-fit:cover;border-radius:6px;border:2px solid transparent;cursor:pointer}
.thumbs img:hover{border-color:var(--accent)}
.detail-info h1{font-size:24px}
.detail-info .meta{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--muted);margin-bottom:12px}
.detail-info .summary{font-size:14px;color:#374151}
.highlights{list-style:none;padding:0;margin:0 0 18px;display:grid;gap:6px;font-size:13px;color:#374151}
.highlights li:before{content:"●";color:var(--accent);margin-right:8px;font-size:10px}
.buy-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:grid;grid-template-columns:1fr 1.15fr;gap:20px;box-shadow:var(--shadow)}
.price-note{display:inline-block;background:#fdeee7;color:var(--accent);border-radius:4px;padding:2px 8px;font-size:12px;font-weight:700}
.inquiry-box{display:grid;gap:9px;border-left:1px solid var(--line);padding-left:20px}
.inquiry-box .row{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.detail-body{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}
.rich{font-size:14.5px;color:#333}
.rich p{margin:0 0 1em}
.rich h3.rich-h{font-size:16px;color:var(--navy);margin:1.4em 0 .5em;padding-left:10px;border-left:4px solid var(--accent)}
.rich ul{padding-left:20px;margin:0 0 1em}
.rich li{margin-bottom:.35em}
.side{display:grid;gap:16px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.side-card h3{font-size:15px;margin-bottom:8px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.side-card a{display:block;padding:4px 0}
.side-card p{font-size:13.5px;margin:0 0 .5em}
.qr{width:130px;height:130px;object-fit:cover;border:1px solid var(--line);border-radius:6px;margin:8px 0}
.rel-list{list-style:none;padding:0;margin:0;font-size:13.5px}
.rel-list li{padding:5px 0;border-bottom:1px dashed var(--line)}
.rel-list li:last-child{border:0}

/* 文章与案例 */
.art-list{list-style:none;padding:0;margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.art-list li{display:flex;align-items:center;gap:14px;padding:14px 18px;border-bottom:1px solid var(--line)}
.art-list li:last-child{border:0}
.art-list li a{flex:1;display:block}
.art-list li a strong{display:block;font-size:15px;color:var(--navy)}
.art-list li a span{display:block;font-size:12.5px;color:var(--muted);margin-top:3px}
.art-list li time{font-size:12px;color:#9aa9b8;white-space:nowrap}
.art-list.wide li{padding:16px 20px}
.two-col{display:grid;grid-template-columns:1.15fr 1fr;gap:34px;align-items:start}
.case-mini{display:grid;gap:12px}
.case-mini a{display:flex;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px;align-items:center}
.case-mini img{width:92px;height:66px;object-fit:cover;border-radius:6px}
.case-mini strong{display:block;font-size:14px}
.case-mini span{font-size:12.5px;color:var(--muted)}
.case-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px}
.article-layout{grid-template-columns:1fr 320px}
.article-body{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 32px}
.article-body h1{font-size:26px}
.article-body .meta{display:flex;gap:14px;font-size:12.5px;color:var(--muted);margin-bottom:16px;flex-wrap:wrap}
.article-body blockquote.lead{background:#f7f9fc;border-left:4px solid var(--accent);margin:0 0 20px;padding:12px 16px;color:#4b5563;font-size:14px}
.article-body .cover{width:100%;max-height:420px;object-fit:cover;border-radius:8px;margin-bottom:18px}
.tags{margin-top:20px;display:flex;gap:8px;flex-wrap:wrap}

/* 场景与平台入口 */
.scene-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.scene{background:#fff;border:1px dashed #c8d5e2;border-radius:8px;padding:16px;text-align:center;font-size:14px;color:var(--navy);font-weight:700}
.link-row{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.link-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.link-card{display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;transition:.2s}
.link-card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px)}
.link-card strong{font-size:16px}
.link-card span,.link-card em{font-size:13px;color:var(--muted);font-style:normal}
.link-card .acc{color:var(--navy);font-weight:700}
.link-card em{color:var(--accent);font-weight:700;margin-top:auto}
.link-card.pending{background:#fafbfc;border-style:dashed;cursor:default}
.link-card.pending:hover{transform:none;box-shadow:none}
.badge{display:inline-block;background:#f1f3f6;color:#8a94a3;border-radius:20px;padding:2px 10px;font-size:12px;font-weight:400}
.link-card .link-logo{height:32px;width:auto;max-width:170px;align-self:flex-start;object-fit:contain}
.link-card .qr{width:auto;height:auto;max-width:200px;max-height:260px;object-fit:contain;background:#fff}

/* 关于与联系 */
.about-grid{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}
.about-grid h2{font-size:19px;margin-top:22px}
.feature-list{list-style:none;padding:0;margin:0;display:grid;gap:10px;font-size:14px}
.feature-list li{background:#fff;border:1px solid var(--line);border-left:4px solid var(--navy);border-radius:6px;padding:12px 16px}
.contact-grid{display:grid;grid-template-columns:1fr 330px;gap:30px;align-items:start}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 26px;display:grid;gap:14px}
.contact-form .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}

/* CTA */
.cta-band{background:linear-gradient(120deg,var(--navy),#0b5183);color:#fff;padding:32px 0}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px}
.cta-band h2{color:#fff;margin:0 0 4px;font-size:20px}
.cta-band p{margin:0;color:#c9dcec;font-size:13.5px}

/* 页脚 */
.site-footer{background:#0b2740;color:#b8cad9;font-size:13px;padding:34px 0 14px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:26px}
.site-footer h4{color:#fff;font-size:14px;margin-bottom:10px}
.site-footer a{display:block;color:#b8cad9;padding:3px 0}
.site-footer a:hover{color:#fff}
.site-footer p{margin:0 0 .5em}
.footer-bottom{display:flex;justify-content:space-between;gap:12px;border-top:1px solid rgba(255,255,255,.12);margin-top:22px;padding-top:14px;color:#8ba3b8;flex-wrap:wrap}

/* 浮动栏 */
.float-bar{position:fixed;right:14px;bottom:90px;display:grid;gap:8px;z-index:40}
.float-bar a{background:var(--navy);color:#fff;width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12.5px;box-shadow:var(--shadow-h)}
.float-bar a:hover{background:var(--accent);color:#fff}

/* 响应式 */
@media(max-width:1024px){
  .hero-inner,.detail-grid,.detail-body,.two-col,.about-grid,.contact-grid,.article-layout{grid-template-columns:1fr}
  .hero-card{align-self:stretch}
  .inquiry-box{border-left:0;border-top:1px solid var(--line);padding:16px 0 0}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:820px){
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:74px;left:0;right:0;background:var(--navy);flex-direction:column;padding:10px 16px 18px}
  body.nav-open .main-nav{display:flex}
  .header-cta .tel{display:none}
  .header-inner{gap:10px}
  .filters{grid-template-columns:1fr 1fr}
  .stat-bar{grid-template-columns:1fr 1fr}
  .buy-box{grid-template-columns:1fr}
  .article-body{padding:20px}
  .article-body h1{font-size:21px}
  .cta-band .wrap{flex-direction:column;align-items:flex-start}
  .contact-form .row,.inquiry-box .row{grid-template-columns:1fr}
  .hero-copy h1{font-size:26px}
}