/* =========================================================
   诺洁森 NUOJIESEN · 官网样式（全站）
   主色：深蓝 / 点缀：橙
   ========================================================= */
:root{
  --navy:#071E33;
  --navy-2:#0B2E4F;
  --navy-3:#123C63;
  --blue:#12558F;
  --blue-2:#1E6FB8;
  --blue-light:#EAF2FA;
  --orange:#F08300;
  --orange-2:#FF9E2C;
  --orange-d:#D97400;
  --ink:#16222E;
  --mut:#5F7183;
  --line:#E2E8EF;
  --bg:#F6F8FB;
  --radius:16px;
  --sh-sm:0 4px 16px rgba(7,30,51,.06);
  --sh:0 14px 40px rgba(7,30,51,.10);
  --max:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:#fff;line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
strong,b{font-weight:700}
.container{max-width:var(--max);margin:0 auto;padding:0 28px}

/* ---------- 通用按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:15px 32px;border-radius:10px;font-size:16px;font-weight:700;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap}
.btn-orange{background:linear-gradient(180deg,#FFA233,#F08300);color:#fff;box-shadow:0 10px 24px rgba(240,131,0,.32)}
.btn-orange:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(240,131,0,.42)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-3)}
.btn-line{border-color:#CFDCE8;color:var(--navy);background:#fff}
.btn-line:hover{border-color:var(--blue);color:var(--blue)}
.btn-line-w{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-line-w:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.btn-sm{padding:11px 22px;font-size:14.5px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--navy);color:#93A8BD;font-size:13px}
.topbar .container{display:flex;align-items:center;justify-content:space-between;height:38px;gap:16px}
.topbar .tb-l{display:flex;align-items:center;gap:10px;letter-spacing:.4px}
.topbar .dot{width:6px;height:6px;border-radius:50%;background:#3ED598;display:inline-block;box-shadow:0 0 0 3px rgba(62,213,152,.18)}
.topbar .tb-r{display:flex;align-items:center;gap:18px}
.topbar a{color:#fff;font-weight:700;letter-spacing:.5px}
.topbar a:hover{color:var(--orange-2)}

/* ---------- 头部 ---------- */
.header{position:sticky;top:0;z-index:200;background:#fff;border-bottom:1px solid var(--line)}
.header.scrolled{box-shadow:0 6px 24px rgba(7,30,51,.09)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:88px;gap:24px}
.logo{display:flex;align-items:center;gap:12px;flex:none}
.logo img{height:64px;width:auto}
.nav{display:flex;align-items:center;gap:2px}
.nav>a{position:relative;padding:9px 15px;font-size:15.5px;font-weight:600;color:#2C3E50;border-radius:8px;transition:.2s}
.nav>a::after{content:"";position:absolute;left:15px;right:15px;bottom:2px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:.25s}
.nav>a:hover{color:var(--blue)}
.nav>a:hover::after,.nav>a.active::after{transform:scaleX(1)}
.nav>a.active{color:var(--blue)}
.nav-cta{margin-left:16px;padding:11px 24px;background:var(--orange);color:#fff !important;border-radius:999px;font-size:15px;font-weight:700;box-shadow:0 8px 20px rgba(240,131,0,.28)}
.nav-cta:hover{background:var(--orange-d)}
.nav-cta::after{display:none !important}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.burger i{display:block;width:20px;height:2px;background:var(--navy);border-radius:2px;transition:.25s}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.hero .grid{display:grid;grid-template-columns:1.05fr .95fr;min-height:620px;align-items:center}
.hero .txt{padding:80px 0 64px;position:relative;z-index:2}
.hero .badge{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;letter-spacing:2px;
  color:#FFC177;background:rgba(240,131,0,.13);border:1px solid rgba(240,131,0,.45);
  padding:7px 16px;border-radius:999px;font-weight:600}
.hero h1{font-size:52px;line-height:1.22;font-weight:800;letter-spacing:1.5px;margin:24px 0 20px}
.hero h1 .hl{color:var(--orange-2);position:relative;white-space:nowrap}
.hero h1 .hl::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:10px;background:rgba(240,131,0,.28);z-index:-1}
.hero .lead{font-size:16.5px;color:#A9BDD0;max-width:540px;line-height:1.9}
.hero .lead b{color:#fff}
.hero .acts{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero .fig{position:relative;align-self:stretch;min-height:560px;
  background:linear-gradient(160deg,#0E3455 0%,#071E33 70%)}
.hero .fig img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 40%;opacity:.96}
.hero .fig .veil{position:absolute;inset:0;
  background:linear-gradient(90deg,#071E33 0%,rgba(7,30,51,.85) 12%,rgba(7,30,51,0) 45%);}
.hero .fig .float{position:absolute;left:32px;bottom:36px;background:rgba(255,255,255,.96);
  color:var(--navy);border-radius:14px;padding:14px 22px;box-shadow:0 18px 40px rgba(0,0,0,.28);
  display:flex;align-items:center;gap:14px}
.hero .fig .float b{font-size:26px;color:var(--orange);line-height:1}
.hero .fig .float span{font-size:13px;color:var(--mut);line-height:1.4}
/* hero 底部数字 */
.hero-bar{position:relative;z-index:2;background:rgba(255,255,255,.04);border-top:1px solid rgba(255,255,255,.10)}
.hero-bar .container{display:grid;grid-template-columns:repeat(4,1fr)}
.hero-bar .st{padding:26px 18px;text-align:left;border-right:1px solid rgba(255,255,255,.08)}
.hero-bar .st:last-child{border-right:none}
.hero-bar b{display:block;font-size:34px;font-weight:800;color:#fff;line-height:1.15}
.hero-bar b i{font-style:normal;font-size:16px;font-weight:700;color:var(--orange-2);margin-left:3px}
.hero-bar span{font-size:13.5px;color:#8FA6BC;letter-spacing:.5px}

/* ---------- 内页 Banner ---------- */
.pbanner{background:linear-gradient(115deg,#071E33 0%,#0B2E4F 60%,#12405F 100%);color:#fff;position:relative;overflow:hidden}
.pbanner::after{content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,111,184,.5),transparent 65%)}
.pbanner .container{padding:64px 28px 58px;position:relative;z-index:2}
.pbanner .crumb{font-size:13px;color:#7E97AE;margin-bottom:14px;letter-spacing:.5px}
.pbanner .crumb a:hover{color:#fff}
.pbanner h1{font-size:38px;font-weight:800;letter-spacing:1.5px;line-height:1.3}
.pbanner p{margin-top:12px;color:#A9BDD0;font-size:15.5px;max-width:640px}

/* ---------- 区块标题 ---------- */
.sec{padding:84px 0}
.sec.tint{background:var(--bg)}
.sec.dark{background:var(--navy);color:#fff}
.sechead{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:46px}
.sechead .l{max-width:640px}
.sechead .no{font-size:13px;font-weight:800;letter-spacing:3px;color:var(--orange);display:flex;align-items:center;gap:12px}
.sechead .no::after{content:"";width:44px;height:1px;background:var(--orange);opacity:.6}
.sechead h2{font-size:36px;line-height:1.3;font-weight:800;color:var(--navy);letter-spacing:1px;margin-top:12px}
.sechead .sub{color:var(--mut);font-size:15.5px;margin-top:12px}
.sechead .r{flex:none;padding-bottom:6px}
.sec.dark .sechead h2{color:#fff}
.sec.dark .sechead .sub{color:#9FB6CC}
.center .sechead{flex-direction:column;align-items:center;text-align:center;gap:0}
.center .sechead .no{justify-content:center}
.center .sechead .no::after{display:none}

/* ---------- 场景 ---------- */
.scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scene{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;transition:.28s;position:relative;overflow:hidden}
.scene::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--orange);transform:scaleY(0);transform-origin:top;transition:.28s}
.scene:hover{transform:translateY(-6px);box-shadow:var(--sh);border-color:#D2E2F0}
.scene:hover::before{transform:scaleY(1)}
.scene .ic{width:52px;height:52px;border-radius:13px;background:var(--blue-light);color:var(--blue);display:flex;align-items:center;justify-content:center;margin-bottom:18px;transition:.28s}
.scene:hover .ic{background:var(--blue);color:#fff}
.scene h3{font-size:19px;color:var(--navy);margin-bottom:8px}
.scene p{font-size:14.5px;color:var(--mut);line-height:1.8}
.scene .temp{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;font-weight:700;color:var(--orange);background:#FFF6EA;border:1px solid #FFE2C0;padding:4px 12px;border-radius:999px}

/* ---------- 产品 ---------- */
.prods{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.prod{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.3s}
.prod:hover{box-shadow:var(--sh);transform:translateY(-5px)}
.prod .pic{position:relative;background:#F3F6FA;overflow:hidden}
.prod .pic img{width:100%;aspect-ratio:4/3;object-fit:cover;object-position:top;transition:.5s}
.prod:hover .pic img{transform:scale(1.04)}
.prod .flag{position:absolute;top:16px;left:16px;background:var(--orange);color:#fff;font-size:12.5px;font-weight:700;padding:5px 14px;border-radius:999px;letter-spacing:.5px}
.prod .body{padding:26px 28px 30px;display:flex;flex-direction:column;flex:1}
.prod h3{font-size:22px;color:var(--navy);letter-spacing:.5px}
.prod .desc{font-size:14.5px;color:var(--mut);margin:10px 0 16px;line-height:1.8}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.tags i{font-style:normal;font-size:12.5px;color:var(--blue);background:var(--blue-light);padding:4px 12px;border-radius:6px;font-weight:600}
.prod .body .more{margin-top:auto;display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:18px}
.prod .more .price{font-size:13.5px;color:var(--mut)}
.prod .more a{color:var(--orange);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.prod .more a:hover{gap:10px;transition:.2s}

/* ---------- 优势 ---------- */
.advs{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.13);border-radius:var(--radius);overflow:hidden}
.adv{background:var(--navy);padding:34px 26px;transition:.28s}
.adv:hover{background:#0C3355}
.adv .no{font-size:30px;font-weight:800;color:rgba(255,255,255,.16);line-height:1;letter-spacing:1px}
.adv h3{font-size:18.5px;margin:14px 0 10px;color:#fff}
.adv p{font-size:14px;color:#A9BDD0;line-height:1.85}
.adv b{color:var(--orange-2)}

/* ---------- 对比表 ---------- */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.cmp{width:100%;border-collapse:collapse;min-width:660px}
table.cmp th,table.cmp td{padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
table.cmp thead th{background:var(--navy);color:#fff;font-weight:700;font-size:15px;border-bottom:none}
table.cmp thead th:first-child{background:#0A2A45}
table.cmp tbody tr:last-child td{border-bottom:none}
table.cmp tbody tr:nth-child(even){background:#FAFCFE}
table.cmp .hl{background:rgba(30,111,184,.08) !important;color:var(--blue);font-weight:700}
table.cmp td.bad{color:#9A6B6B}
table.cmp td.good{color:var(--blue);font-weight:700}
table.cmp td.mid{color:#8A6D3B}
.tnote{font-size:12.5px;color:#93A3B1;margin-top:12px;line-height:1.7}

/* ---------- 实测数据 ---------- */
.datagrid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.datagrid .fig img{border-radius:var(--radius);box-shadow:var(--sh)}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:26px 0 30px}
.kpi{background:#fff;border:1px solid var(--line);border-left:4px solid var(--orange);border-radius:12px;padding:16px 18px}
.kpi b{display:block;font-size:24px;color:var(--blue);line-height:1.2}
.kpi span{font-size:12.5px;color:var(--mut)}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;position:relative}
.step .n{width:34px;height:34px;border-radius:50%;background:var(--navy);color:#fff;font-size:14px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.step h3{font-size:17px;color:var(--navy);margin-bottom:8px}
.step p{font-size:13.5px;color:var(--mut);line-height:1.8}

/* ---------- 案例 ---------- */
.cases{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.case{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s}
.case:hover{transform:translateY(-6px);box-shadow:var(--sh)}
.case .pic{aspect-ratio:4/3;overflow:hidden;background:#EEF2F7}
.case .pic img{width:100%;height:100%;object-fit:cover;transition:.5s}
.case:hover .pic img{transform:scale(1.06)}
.case .body{padding:18px 20px 22px}
.case .tag{font-size:11.5px;font-weight:800;letter-spacing:1.5px;color:var(--orange)}
.case h3{font-size:16.5px;color:var(--navy);margin:7px 0 5px;line-height:1.5}
.case p{font-size:13px;color:var(--mut);line-height:1.7}

/* ---------- 关于 ---------- */
.aboutgrid{display:grid;grid-template-columns:1.05fr 1fr;gap:52px;align-items:center}
.aboutgrid .fig{position:relative}
.aboutgrid .fig img{border-radius:var(--radius);box-shadow:var(--sh)}
.aboutgrid .badge-exp{position:absolute;right:-16px;bottom:-20px;background:var(--navy);color:#fff;border-radius:14px;padding:16px 24px;text-align:center;box-shadow:0 18px 40px rgba(7,30,51,.28)}
.aboutgrid .badge-exp b{display:block;font-size:28px;color:var(--orange-2);line-height:1.1}
.aboutgrid .badge-exp span{font-size:12.5px;color:#A9BDD0}
.aboutgrid h2{font-size:32px;line-height:1.35;color:var(--navy);letter-spacing:1px;margin-bottom:16px}
.aboutgrid p{color:var(--mut);font-size:15.5px;margin-bottom:14px}
.aboutgrid p b{color:var(--blue)}
.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}
.nums .n{background:var(--bg);border-radius:12px;padding:16px 10px;text-align:center}
.nums b{display:block;font-size:21px;color:var(--blue);line-height:1.2}
.nums span{font-size:12.5px;color:var(--mut)}

/* ---------- 服务 ---------- */
.svcs{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.svc{display:flex;gap:15px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;transition:.28s}
.svc:hover{box-shadow:var(--sh-sm);border-color:#D2E2F0}
.svc .ic{flex:none;width:46px;height:46px;border-radius:12px;background:#FFF3E3;color:var(--orange);display:flex;align-items:center;justify-content:center}
.svc b{display:block;font-size:15.5px;color:var(--navy);margin-bottom:4px}
.svc span{font-size:13px;color:var(--mut);line-height:1.7}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(100deg,#F08300,#FFA93F);color:#fff;position:relative;overflow:hidden}
.cta::after{content:"";position:absolute;right:-80px;bottom:-160px;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.12)}
.cta .container{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:52px 28px;position:relative;z-index:2;flex-wrap:wrap}
.cta h2{font-size:30px;font-weight:800;letter-spacing:1px;line-height:1.35}
.cta p{font-size:15px;opacity:.94;margin-top:8px}
.cta .tel{display:flex;align-items:center;gap:16px}
.cta .tel .ico{width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center}
.cta .tel small{display:block;font-size:13px;opacity:.9;letter-spacing:1px}
.cta .tel b{font-size:34px;font-weight:800;letter-spacing:1px;line-height:1.2}

/* ---------- 新闻 ---------- */
.news{display:grid;gap:18px}
.nitem{display:grid;grid-template-columns:132px 1fr auto;gap:26px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 24px;transition:.25s}
.nitem:hover{border-color:#CFE0EF;box-shadow:var(--sh-sm);transform:translateX(4px)}
.nitem .date{text-align:center;border-right:1px solid var(--line);padding-right:16px}
.nitem .date b{display:block;font-size:26px;font-weight:800;color:var(--blue);line-height:1.2}
.nitem .date span{font-size:12.5px;color:var(--mut)}
.nitem h3{font-size:17.5px;color:var(--navy);margin-bottom:6px}
.nitem p{font-size:13.5px;color:var(--mut);line-height:1.7}
.nitem .go{color:var(--orange);font-weight:700;font-size:14px;white-space:nowrap}

/* ---------- 文章正文 ---------- */
.article{max-width:820px;margin:0 auto}
.article h1{font-size:34px;line-height:1.4;color:var(--navy);letter-spacing:.5px;margin-bottom:16px}
.article .meta{color:#93A3B1;font-size:13.5px;padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:30px}
.article h2{font-size:23px;color:var(--navy);margin:38px 0 16px;padding-left:14px;border-left:4px solid var(--orange);line-height:1.5}
.article h3{font-size:18px;color:var(--blue);margin:26px 0 12px}
.article p{font-size:16px;line-height:2;color:#33475B;margin-bottom:18px}
.article ul{margin:0 0 18px 0}
.article ul li{position:relative;padding-left:20px;margin-bottom:10px;color:#33475B;font-size:15.5px;line-height:1.9}
.article ul li::before{content:"";position:absolute;left:4px;top:13px;width:6px;height:6px;border-radius:50%;background:var(--orange)}
.article img{border-radius:12px;margin:22px 0}
.article .tip{background:#FFF9EF;border-left:4px solid var(--orange);border-radius:8px;padding:18px 22px;margin:24px 0;font-size:15px;color:#5A4A32;line-height:1.9}

/* ---------- 联系 ---------- */
.contactgrid{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.cbox{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 32px}
.cbox h3{font-size:20px;color:var(--navy);margin-bottom:22px}
.citem{display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed var(--line)}
.citem:last-child{border-bottom:none}
.citem .ic{flex:none;width:44px;height:44px;border-radius:11px;background:var(--blue-light);color:var(--blue);display:flex;align-items:center;justify-content:center}
.citem b{display:block;font-size:12.5px;color:#93A3B1;font-weight:600;letter-spacing:.5px}
.citem span{font-size:16px;color:var(--navy);font-weight:700;line-height:1.6}
.form .frow{margin-bottom:16px}
.form label{display:block;font-size:13.5px;color:var(--mut);margin-bottom:7px;font-weight:600}
.form input,.form textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:13px 16px;font-size:15px;font-family:inherit;color:var(--ink);background:#FAFCFE;transition:.2s}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--blue-2);background:#fff;box-shadow:0 0 0 3px rgba(30,111,184,.12)}
.form textarea{resize:vertical;min-height:110px}

/* ---------- 页脚 ---------- */
.footer{background:var(--navy);color:#8FA6BC;font-size:14px}
.footer .top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding:56px 0 44px}
.footer .brand img{height:46px;background:#fff;border-radius:8px;padding:7px;margin-bottom:16px}
.footer .brand p{line-height:1.9;font-size:13.5px;color:#8FA6BC}
.footer h4{color:#fff;font-size:15.5px;margin-bottom:18px;letter-spacing:.5px}
.footer li{margin-bottom:10px;font-size:13.5px;line-height:1.7}
.footer li a:hover{color:#fff}
.footer .telbig{font-size:22px;font-weight:800;color:#fff;letter-spacing:.5px}
.footer .bottom{border-top:1px solid rgba(255,255,255,.09);padding:18px 0;text-align:center;font-size:12.5px;color:#5C7488}
.footer .bottom a{color:#5C7488}
.footer .bottom a:hover{color:#fff}

/* ---------- 移动端底部条 ---------- */
.mbar{display:none}

/* ---------- 动效 ---------- */
.rv{opacity:0;transform:translateY(28px);transition:opacity .75s cubic-bezier(.22,.8,.3,1),transform .75s cubic-bezier(.22,.8,.3,1)}
.rv.on{opacity:1;transform:none}

/* =================== 响应式 =================== */
@media (max-width:1100px){
  .hero .grid{grid-template-columns:1fr;min-height:auto}
  .hero .txt{padding:64px 0 44px}
  .hero h1{font-size:40px}
  .hero .fig{min-height:420px}
  .hero .fig .veil{background:linear-gradient(180deg,#071E33 0%,rgba(7,30,51,0) 55%)}
  .scenes,.svcs{grid-template-columns:repeat(2,1fr)}
  .advs{grid-template-columns:repeat(2,1fr)}
  .cases{grid-template-columns:repeat(2,1fr)}
  .datagrid,.aboutgrid,.contactgrid{grid-template-columns:1fr;gap:32px}
  .footer .top{grid-template-columns:1fr 1fr;gap:32px}
  .nav{display:none;position:absolute;top:80px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 22px 22px;box-shadow:0 18px 34px rgba(7,30,51,.14);border-top:1px solid var(--line)}
  .nav.open{display:flex}
  .nav>a{padding:14px 8px;border-bottom:1px solid var(--line);border-radius:0}
  .nav>a::after{display:none}
  .nav-cta{text-align:center;margin:16px 0 0}
  .burger{display:flex}
  .sechead{flex-direction:column;align-items:flex-start;gap:18px}
}
@media (max-width:720px){
  .topbar .tb-l{display:none}
  .topbar .container{justify-content:center;height:34px}
  .header .container{height:66px}
  .nav{top:66px}
  .logo img{height:40px}
  .hero h1{font-size:31px;letter-spacing:.5px}
  .hero .lead{font-size:15px}
  .hero .badge{font-size:12px;letter-spacing:1px}
  .hero .fig{min-height:300px}
  .hero .fig .float{left:16px;bottom:16px;padding:10px 16px}
  .hero .fig .float b{font-size:20px}
  .hero-bar .container{grid-template-columns:1fr 1fr}
  .hero-bar .st{padding:18px 14px;border-bottom:1px solid rgba(255,255,255,.08)}
  .hero-bar .st:nth-child(2){border-right:none}
  .hero-bar b{font-size:26px}
  .sec{padding:56px 0}
  .sechead h2{font-size:26px}
  .scenes,.svcs,.cases,.prods{grid-template-columns:1fr}
  .advs{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .nums{grid-template-columns:1fr 1fr}
  .kpis{grid-template-columns:1fr}
  .pbanner .container{padding:44px 22px 40px}
  .pbanner h1{font-size:26px}
  .cta .tel b{font-size:26px}
  .cta h2{font-size:22px}
  .nitem{grid-template-columns:1fr;gap:10px}
  .nitem .date{text-align:left;border-right:none;border-bottom:1px solid var(--line);padding:0 0 10px}
  .nitem .date b{display:inline;font-size:16px;margin-right:8px}
  .footer .top{grid-template-columns:1fr}
  .article h1{font-size:25px}
  .article h2{font-size:19px}
  .mbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:150;box-shadow:0 -6px 20px rgba(0,0,0,.16)}
  .mbar a{flex:1;display:flex;align-items:center;justify-content:center;gap:7px;padding:14px 0;font-size:15px;font-weight:700;color:#fff}
  .mbar .t1{background:var(--navy)}
  .mbar .t2{background:var(--orange)}
  body{padding-bottom:50px}
}

/* ---------- 闭式循环：不用排风管 ---------- */
.closeloop{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:56px;border-top:1px solid var(--line)}
.closeloop > div{padding:32px 30px 8px;border-left:1px solid var(--line)}
.closeloop > div:first-child{border-left:none;padding-left:0}
.closeloop .k{font-size:12.5px;font-weight:800;letter-spacing:3px;color:var(--orange)}
.closeloop h3{font-size:19px;font-weight:800;color:var(--navy);margin:10px 0 10px;line-height:1.45}
.closeloop p{font-size:14.5px;line-height:1.9;color:var(--mut)}
.closeloop p b{color:var(--navy)}
@media (max-width:860px){
  .closeloop{grid-template-columns:1fr}
  .closeloop > div{border-left:none;border-top:1px solid var(--line);padding:24px 0 4px}
  .closeloop > div:first-child{border-top:none}
}

/* ---------- 顶部滚动公告条 ---------- */
.ticker{background:var(--navy);overflow:hidden;height:40px;display:flex;align-items:center;position:relative}
.ticker::before,.ticker::after{content:"";position:absolute;top:0;bottom:0;width:60px;z-index:2;pointer-events:none}
.ticker::before{left:0;background:linear-gradient(90deg,var(--navy),transparent)}
.ticker::after{right:0;background:linear-gradient(-90deg,var(--navy),transparent)}
.ticker .track{display:flex;white-space:nowrap;animation:tick 32s linear infinite;will-change:transform}
.ticker:hover .track{animation-play-state:paused}
.ticker .set{display:flex;flex:none}
.ticker span{display:inline-flex;align-items:center;font-size:13.5px;letter-spacing:1.5px;color:#C9D8E6;padding:0 40px;position:relative}
.ticker span::after{content:"";position:absolute;right:-3px;top:50%;width:5px;height:5px;border-radius:50%;background:var(--orange);transform:translateY(-50%)}
.ticker b{color:#fff;font-weight:700}
.ticker em{font-style:normal;color:#F2A24B;font-weight:700}
@keyframes tick{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (max-width:640px){.ticker{height:34px}.ticker span{font-size:12px;padding:0 26px}}
@media (prefers-reduced-motion:reduce){.ticker .track{animation:none}}