:root{
  --navy:#0B1F3A; --navy2:#123055; --ink:#1B2A41; --muted:#5B6B80;
  --amber:#F5A623; --amber-d:#E08E00; --green:#2BB673; --bg:#F7F9FC;
  --card:#FFFFFF; --line:#E4E9F0; --radius:16px;
  --shadow:0 8px 28px rgba(11,31,58,.08);
  --font:"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;font-size:16px}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
body.zh .lang-en{display:none}
body:not(.zh) .lang-zh{display:none}
header{position:sticky;top:0;z-index:100;background:rgba(11,31,58,.94);backdrop-filter:blur(10px);color:#fff}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px}
.logo .mark{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,var(--amber),#FFD37A);display:flex;align-items:center;justify-content:center;color:#0B1F3A;font-weight:800;font-size:17px}
.logo .mark-img{width:36px;height:36px;border-radius:9px;object-fit:cover;display:inline-block;background:#fff}
.logo .mark-svg{width:36px;height:36px;display:block;flex:0 0 auto}
.logo small{display:block;font-size:10px;font-weight:400;letter-spacing:2px;color:#9FB3CC;text-transform:uppercase}
.navlinks{display:flex;gap:26px;align-items:center;font-size:14.5px}
.navlinks a{color:#C9D6E6;transition:.2s}
.navlinks a:hover{color:var(--amber)}
.lang-btn{margin-left:8px;border:1px solid rgba(255,255,255,.35);background:transparent;color:#fff;border-radius:20px;padding:5px 14px;cursor:pointer;font-size:13px;font-family:var(--font)}
.lang-btn:hover{border-color:var(--amber);color:var(--amber)}
.hero{background:radial-gradient(1100px 500px at 78% -10%,rgba(245,166,35,.28),transparent 60%),linear-gradient(160deg,#0B1F3A,#123055 55%,#0E2748);color:#fff;padding:96px 0 110px;position:relative;overflow:hidden}
.hero .container{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative}
.hero-art img{width:100%;border-radius:var(--radius);box-shadow:0 24px 50px rgba(0,0,0,.35);aspect-ratio:3/2;object-fit:cover}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:2.5px;text-transform:uppercase;color:var(--amber);font-weight:600;margin-bottom:18px}
.kicker::before{content:"";width:26px;height:2px;background:var(--amber)}
.hero h1{font-size:44px;line-height:1.18;font-weight:800}
.hero h1 em{font-style:normal;color:var(--amber)}
.hero p.lead{margin:20px 0 32px;font-size:17.5px;color:#B9C7DA;max-width:540px}
.btn{display:inline-block;padding:13px 28px;border-radius:10px;font-weight:600;font-size:15.5px;transition:.2s;cursor:pointer;border:none;font-family:var(--font)}
.btn-amber{background:var(--amber);color:#26170A;box-shadow:0 6px 18px rgba(245,166,35,.35)}
.btn-amber:hover{background:var(--amber-d);transform:translateY(-2px)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.45);color:#fff;margin-left:12px}
.btn-ghost:hover{border-color:var(--amber);color:var(--amber)}
.btn-line{border:1.5px solid var(--line);color:var(--navy);background:#fff}
.btn-line:hover{border-color:var(--amber);color:var(--amber-d)}
.btn-sm{padding:8px 16px;font-size:13.5px}
section{padding:84px 0}
.sec-head{text-align:center;max-width:760px;margin:0 auto 52px}
.sec-head .kicker{justify-content:center}
.sec-head .kicker::after{content:"";width:26px;height:2px;background:var(--amber)}
.sec-head h2{font-size:33px;font-weight:800;color:var(--navy)}
.sec-head p{color:var(--muted);margin-top:12px}
/* 分类与产品 */
.cats{display:flex;gap:14px;justify-content:center;margin-bottom:40px;flex-wrap:wrap}
.cat-btn{padding:10px 24px;border-radius:30px;border:1.5px solid var(--line);background:#fff;color:var(--muted);font-weight:600;font-size:14.5px;cursor:pointer;transition:.2s;font-family:var(--font)}
.cat-btn.sub{padding:6px 16px;font-size:13px;font-weight:500;opacity:.85}
.cat-btn.active,.cat-btn:hover{background:var(--navy);border-color:var(--navy);color:#fff}
.cat-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:64px}
.cat-card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s}
.cat-card:hover{transform:translateY(-5px)}
.cat-card .ph{height:150px;overflow:hidden}
.cat-card .ph img{width:100%;height:100%;object-fit:cover}
.cat-card .body{padding:20px}
.cat-card h4{color:var(--navy);font-size:17px}
.cat-card p{font-size:13.5px;color:var(--muted);margin-top:6px}
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pcard{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.25s}
.pcard:hover{transform:translateY(-5px);box-shadow:0 14px 34px rgba(11,31,58,.13)}
.pcard .ph{height:200px;overflow:hidden;background:#0E2748}
.pcard .ph img{width:100%;height:100%;object-fit:cover;transition:.4s}
.pcard:hover .ph img{transform:scale(1.05)}
.pcard .body{padding:20px 20px 18px;flex:1;display:flex;flex-direction:column}
.pcard .tag{display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--green);background:rgba(43,182,115,.1);padding:3px 10px;border-radius:14px;margin-bottom:10px;align-self:flex-start}
.pcard h4{font-size:16.5px;color:var(--navy);line-height:1.4}
.pcard p{font-size:13.5px;color:var(--muted);margin:8px 0 14px;flex:1}
.pcard .more{color:var(--amber-d);font-weight:700;font-size:14px}
/* 详情页 */
.pd-crumb{margin-bottom:24px;font-size:14px;color:#8FB0D9;font-weight:600}
.pd-crumb a:hover{color:var(--amber)}
.pd-hero{background:linear-gradient(150deg,#0E2748,#0B1F3A 70%);padding:36px 0 64px;color:#fff}
.pd-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.pd-hero .tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:#7BE0AC;background:rgba(43,182,115,.16);padding:4px 12px;border-radius:20px;margin-bottom:12px}
.pd-hero h1{font-size:32px;line-height:1.25;margin-bottom:14px}
.pd-hero .sum{color:#B9CCE4;font-size:16px;margin-bottom:22px}
.pd-shot{border-radius:var(--radius);overflow:hidden;box-shadow:0 24px 50px rgba(0,0,0,.4)}
.pd-shot img{width:100%;aspect-ratio:3/2;object-fit:cover;cursor:zoom-in}
.sharebar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:20px}
.sharebar span.lb{font-size:13px;color:#8FA3BC;font-weight:600;margin-right:4px}
.shbtn{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.1);transition:.2s;cursor:pointer;border:1px solid rgba(255,255,255,.15)}
.shbtn:hover{background:var(--amber);color:#26170A}
.shbtn svg{width:17px;height:17px;fill:currentColor}
.shbtn.cp{font-size:12px;font-weight:700}
.pd-sec{padding:60px 0}
.pd-sec.pd-alt{background:#F0F5FA}
.pd-cols{display:grid;grid-template-columns:1.1fr .9fr;gap:44px}
.pd-cols h3,.pd-sec h3.h{font-size:22px;color:var(--navy);font-weight:800;margin-bottom:18px}
.pd-cols .intro{white-space:pre-line;color:var(--ink);font-size:15.5px}
.feat{list-style:none}
.feat li{padding:8px 0 8px 30px;position:relative;font-size:15px}
.feat li::before{content:"";position:absolute;left:0;top:14px;width:16px;height:16px;border-radius:50%;background:rgba(245,166,35,.15)}
.feat li::after{content:"";position:absolute;left:4.5px;top:18px;width:7px;height:4px;border-left:2px solid var(--amber-d);border-bottom:2px solid var(--amber-d);transform:rotate(-45deg)}
.kv{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;box-shadow:var(--shadow);margin-bottom:12px}
.kv-k{flex:none;width:38%;font-weight:700;color:var(--navy);font-size:14.5px}
.kv-v{flex:1;font-size:14.5px}
.pd-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pd-gallery .gimg{border-radius:12px;overflow:hidden;box-shadow:var(--shadow);background:#0E2748}
.pd-gallery .gimg img{width:100%;aspect-ratio:4/3;object-fit:cover;cursor:zoom-in;transition:.3s}
.pd-gallery .gimg img:hover{transform:scale(1.03)}
.pd-cta{background:linear-gradient(150deg,#123055,#0B1F3A);padding:56px 0;text-align:center;color:#fff}
.pd-cta h2{font-size:26px;margin-bottom:10px}
.pd-cta p{color:#B9CCE4;margin-bottom:22px}
.pd-ds{margin-top:14px}
.pd-ds a{color:var(--amber);font-size:14px;font-weight:600}
.pd-ds a:hover{text-decoration:underline}
/* 应用方案 */
section[id]{scroll-margin-top:84px}
.solutions{background:#F0F5FA}
.sol-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.sol-card{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.25s}
.sol-card:hover{transform:translateY(-5px)}
.sol-card .ph{height:150px;overflow:hidden}
.sol-card .ph img{width:100%;height:100%;object-fit:cover;transition:.4s}
.sol-card:hover .ph img{transform:scale(1.05)}
.sol-card .body{padding:20px;flex:1;display:flex;flex-direction:column}
.sol-card h4{color:var(--navy);font-size:16.5px}
.sol-card p{font-size:13.5px;color:var(--muted);margin:8px 0 14px;flex:1}
.sol-card .more{color:var(--amber-d);font-weight:700;font-size:13.5px}
/* 认证墙 */
.certs{background:linear-gradient(160deg,#0B1F3A,#123055);padding:52px 0}
.certs .kicker{color:var(--amber);margin-bottom:22px}
.cert-row{display:flex;gap:14px;flex-wrap:wrap;justify-content:center}
.cert-chip{border:1.5px solid rgba(255,255,255,.25);color:#E7EEF7;border-radius:30px;padding:9px 22px;font-size:14px;font-weight:600;letter-spacing:.5px;transition:.2s}
.cert-chip:hover{border-color:var(--amber);color:var(--amber)}
.cert-note{margin-top:20px;font-size:12.5px;color:#8FA3BC}
/* FAQ */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;box-shadow:var(--shadow);overflow:hidden}
.faq-item summary{padding:18px 22px;font-weight:700;color:var(--navy);cursor:pointer;list-style:none;position:relative;padding-right:44px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:20px;color:var(--amber-d);font-weight:700}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-a{padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.75}
/* 文章 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ncard{background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s;display:flex;flex-direction:column}
.ncard:hover{transform:translateY(-4px)}
.ncard .ph{height:170px;overflow:hidden}
.ncard .ph img{width:100%;height:100%;object-fit:cover}
.ncard .body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
.ncard .date{font-size:12.5px;color:var(--muted)}
.ncard h4{font-size:15.5px;color:var(--navy);margin:6px 0 8px;line-height:1.45}
.ncard p{font-size:13.5px;color:var(--muted);flex:1}
.article{max-width:860px;margin:0 auto;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:48px 52px}
.article .date{color:var(--muted);font-size:13.5px}
.article h1{font-size:28px;color:var(--navy);line-height:1.3;margin:8px 0 26px}
.article .body{white-space:pre-line;font-size:15.5px;line-height:1.85;color:var(--ink)}
/* 其他区块 */
.about-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.about h2{font-size:30px;color:#fff;font-weight:800;margin-bottom:16px}
.about p{color:#B9C7DA;white-space:pre-line;font-size:15px;margin-bottom:14px}
.about .kicker{color:var(--amber)}
.about{background:linear-gradient(160deg,#0B1F3A,#123055);color:#fff}
.about ul{list-style:none}
.about ul li{padding:6px 0 6px 28px;position:relative;color:#D7E1EE;font-size:14.5px}
.about ul li::before{content:"✓";position:absolute;left:0;color:var(--amber);font-weight:700}
.stats{background:var(--card);margin-top:-52px;border-radius:var(--radius);box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(4,1fr);position:relative}
.stat{padding:28px 16px;text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat .num{font-size:28px;font-weight:800;color:var(--navy)}
.stat .num span{color:var(--amber)}
.stat .lbl{font-size:12.5px;color:var(--muted);margin-top:4px}
.contact .wrap{display:grid;grid-template-columns:1fr 1.1fr;gap:52px;align-items:start}
.c-item{display:flex;gap:16px;margin-bottom:22px;align-items:flex-start}
.c-item .ico{width:44px;height:44px;border-radius:12px;background:rgba(245,166,35,.13);display:flex;align-items:center;justify-content:center;font-size:19px}
.c-item h5{font-size:14.5px;color:var(--navy)}
.c-item p{font-size:14px;color:var(--muted)}
form.quote{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:34px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.f-group{margin-bottom:14px}
label{display:block;font-size:13px;font-weight:600;color:var(--navy);margin-bottom:6px}
input,select,textarea{width:100%;padding:11px 14px;border:1.5px solid var(--line);border-radius:9px;font-size:14.5px;font-family:var(--font);background:#FBFCFE;outline:none;transition:.2s}
input:focus,select:focus,textarea:focus{border-color:var(--amber)}
textarea{resize:vertical;min-height:100px}
footer{background:#081729;color:#8FA3BC;padding:48px 0 0;font-size:14px}
footer .top{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;padding-bottom:34px}
footer h6{color:#fff;font-size:13.5px;letter-spacing:1px;text-transform:uppercase;margin-bottom:12px}
.copyright{border-top:1px solid rgba(255,255,255,.08);padding:16px 0;text-align:center;font-size:12.5px;color:#5F7590}
.reveal{opacity:0;transform:translateY(20px);transition:.6s ease}
.reveal.on{opacity:1;transform:none}
#lightbox{position:fixed;inset:0;z-index:9999;background:rgba(4,12,24,.92);display:none;align-items:center;justify-content:center;cursor:zoom-out;padding:24px}
#lightbox.on{display:flex}
#lightbox img{max-width:94vw;max-height:92vh;border-radius:12px}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:30px;background:var(--navy);color:#fff;padding:11px 22px;border-radius:24px;font-size:14px;display:none;z-index:10000;box-shadow:0 10px 30px rgba(0,0,0,.3)}
.toast.show{display:block}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:22px;cursor:pointer;padding:6px 10px;line-height:1}
@media(max-width:980px){
  .hero .container,.pd-grid,.pd-cols,.about-wrap,.contact .wrap{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  .pgrid,.news-grid,.cat-cards{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:1fr 1fr}
  .stat:nth-child(2){border-right:none}
  .nav-toggle{display:block}
  .navlinks{display:none;position:absolute;top:68px;left:0;right:0;background:#0B1F3A;flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 16px;box-shadow:0 14px 30px rgba(0,0,0,.3)}
  .navlinks.open{display:flex}
  .navlinks a{padding:13px 0;border-bottom:1px solid rgba(255,255,255,.08);font-size:15.5px}
  .navlinks a:last-child{border-bottom:none}
}
@media(max-width:600px){
  .pgrid,.news-grid,.cat-cards{grid-template-columns:1fr}
  section{padding:60px 0}
  .article{padding:30px 22px}
}

/* 底部 Banner（页脚上方通栏，后台版面设计可编辑） */
.fban{position:relative;background:radial-gradient(900px 420px at 80% -20%,rgba(245,166,35,.30),transparent 60%),linear-gradient(150deg,#0B1F3A,#123055 55%,#0E2748);color:#fff;overflow:hidden}
.fban .fban-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.30}
.fban .fban-in{position:relative;padding:72px 0;text-align:center;max-width:820px}
.fban .fban-in .kicker{justify-content:center;color:var(--amber)}
.fban .fban-in h2{font-size:34px;line-height:1.22;margin:2px 0}
.fban .fban-in h2 em{font-style:italic;color:var(--amber)}
.fban .fban-in p.lead{margin:16px auto 0;font-size:16.5px;color:#B9C7DA;max-width:600px}
.fban .fban-cta{margin-top:28px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.fban .fban-cta .btn-ghost{margin-left:0}
@media(max-width:600px){.fban .fban-in h2{font-size:25px}.fban .fban-in{padding:54px 0}}