:root{
  --navy:#0B2545;
  --navy-2:#122C55;
  --blue:#1E6FFF;
  --blue-dark:#1557D6;
  --amber:#F5A623;
  --amber-soft:#FFE9C7;
  --bg:#F4F7FB;
  --ink:#1A2433;
  --muted:#5B6B83;
  --line:#DCE4EF;
  --white:#FFFFFF;
  --radius:12px;
  --shadow:0 10px 30px rgba(11,37,69,.08);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'Noto Sans SC','Microsoft YaHei','PingFang SC',system-ui,sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;box-sizing:border-box;}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(11,37,69,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .3s ease;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;}
.brand{display:flex;align-items:center;gap:10px;min-height:44px;}
.brand-mark{width:34px;height:34px;flex:0 0 34px;}
.brand-text{font-size:18px;font-weight:900;color:var(--white);line-height:1.2;letter-spacing:.5px;}
.brand-text small{display:block;font-size:10px;font-weight:500;color:#A9BCD9;letter-spacing:2px;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{color:#D6E2F5;font-size:15px;font-weight:500;transition:color .2s;}
.nav-links a:hover{color:var(--amber);}
.nav-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.3);border-radius:8px;width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;color:var(--white);}
.nav-toggle svg{width:20px;height:20px;}
@media (max-width:820px){
  .nav-toggle{display:flex;}
  .nav-links{
    display:none;position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--navy);padding:8px 20px 16px;border-bottom:1px solid rgba(255,255,255,.08);
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:16px;}
}

/* ===== Hero ===== */
.hero{position:relative;min-height:640px;display:flex;align-items:center;color:var(--white);overflow:hidden;}
.hero-bg{position:absolute;inset:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;}
.hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,37,69,.55) 0%,rgba(11,37,69,.35) 45%,rgba(11,37,69,.85) 100%);}
.hero-content{position:relative;z-index:2;max-width:1180px;margin:0 auto;padding:120px 20px 80px;width:100%;box-sizing:border-box;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:14px;font-weight:500;color:var(--amber-soft);
  background:rgba(245,166,35,.14);border:1px solid rgba(245,166,35,.35);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.hero h1{font-size:46px;font-weight:900;line-height:1.2;letter-spacing:1px;margin-bottom:14px;text-shadow:0 2px 18px rgba(0,0,0,.25);}
.hero-sub{font-size:18px;color:#D6E2F5;max-width:640px;line-height:1.8;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;padding:13px 30px;border-radius:10px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{background:var(--blue);color:var(--white);box-shadow:0 8px 20px rgba(30,111,255,.35);}
.btn-primary:hover{background:var(--blue-dark);}
.btn-ghost{border:1px solid rgba(255,255,255,.5);color:var(--white);background:rgba(255,255,255,.06);}
.btn-ghost:hover{background:rgba(255,255,255,.14);}

/* ===== 信任条 ===== */
.stats{background:var(--white);border-bottom:1px solid var(--line);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:26px 0;}
.stat{text-align:center;padding:6px 12px;border-right:1px solid var(--line);}
.stat:last-child{border-right:none;}
.stat b{display:block;font-size:28px;font-weight:900;color:var(--navy);line-height:1.2;}
.stat span{font-size:14px;color:var(--muted);}
@media (max-width:820px){
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px 0;}
  .stat:nth-child(2){border-right:none;}
  .stat:nth-child(4){border-right:none;}
}

/* ===== 通用板块 ===== */
.section{padding:76px 0;}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center;}
.section-eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--blue);letter-spacing:3px;margin-bottom:10px;}
.section-head h2{font-size:34px;font-weight:900;color:var(--navy);line-height:1.3;}
.section-head p{font-size:16px;color:var(--muted);margin-top:12px;}

/* ===== 产品卡片 ===== */
.section-alt{background:var(--bg);}
.prod-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px;}
.prod-card{
  background:var(--white);border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease;
}
.prod-card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(11,37,69,.14);}
.prod-card .ph{aspect-ratio:1/1;overflow:hidden;background:var(--bg);}
.prod-card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.prod-card:hover .ph img{transform:scale(1.04);}
.prod-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.prod-body h3{font-size:19px;font-weight:900;color:var(--navy);margin-bottom:8px;}
.prod-body p{font-size:14px;color:var(--muted);flex:1;margin-bottom:14px;}
.prod-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px;}
.prod-tags span{font-size:13px;color:var(--navy);background:var(--bg);border:1px solid var(--line);padding:3px 10px;border-radius:999px;}
.prod-more{font-size:14px;font-weight:700;color:var(--blue);display:inline-flex;align-items:center;min-height:44px;}

/* ===== 关于 ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.about-fig{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.about-fig img{width:100%;height:100%;object-fit:cover;}
.about-copy h2{font-size:30px;font-weight:900;color:var(--navy);line-height:1.35;margin-bottom:16px;}
.about-copy p{font-size:15.5px;color:var(--muted);margin-bottom:14px;}
.about-points{list-style:none;margin-top:8px;}
.about-points li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-bottom:1px dashed var(--line);font-size:15px;}
.about-points li:last-child{border-bottom:none;}
.about-points .dot{flex:0 0 22px;height:22px;border-radius:50%;background:var(--amber-soft);color:#B26A00;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:900;margin-top:2px;}
@media (max-width:820px){.about-grid{grid-template-columns:1fr;gap:28px;}}

/* ===== 案例 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.case-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;}
.case-card .case-tag{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:1px;}
.case-card h3{font-size:17px;font-weight:900;color:var(--navy);margin:8px 0 6px;}
.case-card p{font-size:14px;color:var(--muted);}
.case-note{margin-top:28px;padding:14px 18px;background:var(--amber-soft);border:1px solid #F0CF9A;border-radius:10px;font-size:14px;color:#7A5200;text-align:center;}
@media (max-width:820px){.case-grid{grid-template-columns:1fr;}}

/* ===== 行业新闻 ===== */
.news-list{max-width:860px;margin:0 auto;}
.news-card{display:flex;gap:22px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;box-shadow:var(--shadow);}
.news-date{flex:0 0 74px;text-align:center;background:var(--blue);color:var(--white);border-radius:12px;padding:12px 6px;align-self:flex-start;}
.news-date strong{display:block;font-size:26px;font-weight:900;line-height:1.1;}
.news-date span{font-size:12px;opacity:.85;}
.news-body h3{font-size:18px;font-weight:900;color:var(--navy);margin-bottom:8px;}
.news-body p{font-size:14px;color:var(--muted);line-height:1.7;}
.news-more{display:inline-flex;align-items:center;margin-top:12px;font-size:14px;font-weight:700;color:var(--blue);min-height:44px;}
.news-more:hover{color:var(--amber);}
@media (max-width:820px){.news-card{flex-direction:column;gap:14px;padding:20px;}}

/* ===== FAQ ===== */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;}
.faq-q{
  width:100%;background:none;border:none;font-family:inherit;text-align:left;cursor:pointer;
  padding:18px 22px;font-size:16px;font-weight:700;color:var(--navy);
  display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:44px;
}
.faq-q::after{content:'+';font-size:22px;font-weight:400;color:var(--blue);transition:transform .25s ease;flex:0 0 auto;}
.faq-item.open .faq-q::after{transform:rotate(45deg);}
.faq-a{display:none;padding:0 22px 18px;font-size:15px;color:var(--muted);border-top:1px dashed var(--line);padding-top:14px;}
.faq-item.open .faq-a{display:block;}

/* ===== 联系 ===== */
.contact{background:var(--navy);color:var(--white);}
.contact .section-eyebrow{color:var(--amber);}
.contact .section-head h2{color:var(--white);}
.contact .section-head p{color:#A9BCD9;}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:920px;margin:0 auto;}
.contact-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:26px 24px;text-align:center;}
.contact-card .ic{width:46px;height:46px;margin:0 auto 14px;border-radius:12px;background:rgba(245,166,35,.15);display:flex;align-items:center;justify-content:center;}
.contact-card h3{font-size:15px;font-weight:500;color:#A9BCD9;margin-bottom:6px;}
.contact-card .val{font-size:18px;font-weight:900;color:var(--white);word-break:break-all;}
.contact-card .val a{display:inline-flex;align-items:center;min-height:44px;}
.contact-card .val a:hover{color:var(--amber);}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr;}}

/* ===== 页脚 ===== */
.site-footer{background:#081C36;color:#8FA3C4;padding:34px 0;font-size:13px;}
.footer-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}
.site-footer a:hover{color:var(--amber);}

@media (max-width:600px){
  .hero{min-height:520px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:15px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:27px;}
  .prod-grid{grid-template-columns:1fr;}
}

/* ==== English site additions ==== */
body{font-family:-apple-system,'Segoe UI',Inter,Roboto,Helvetica,Arial,sans-serif;}
.page-hero{background:linear-gradient(135deg,#0B2545 0%,#122C55 55%,#1B3D6E 100%);color:#fff;padding:132px 0 58px;}
.page-hero h1{font-size:38px;font-weight:900;line-height:1.18;margin-bottom:14px;letter-spacing:-.3px;}
.page-hero p{font-size:17px;color:#C7D6EC;max-width:760px;}
.crumb{font-size:13px;color:#8FA3C4;margin-bottom:16px;}
.crumb a{color:#8FA3C4;}.crumb a:hover{color:#F5A623;}
.lang{border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:3px 13px;font-size:13px;line-height:1.5;color:#D6E2F5!important;}
.lang:hover{border-color:#F5A623;color:#F5A623!important;}
.lead-2{font-size:18px;color:#33415C;max-width:820px;margin:0 auto 18px;text-align:center;}
.spec-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;font-size:15px;}
.spec-table th,.spec-table td{padding:12px 16px;border-bottom:1px solid #EDF1F7;text-align:left;}
.spec-table th{background:#0B2545;color:#fff;font-weight:600;width:34%;}
.spec-table tr:last-child td,.spec-table tr:last-child th{border-bottom:none;}
.feat{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:8px;}
.feat .item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 22px;box-shadow:var(--shadow);}
.feat .item b{display:block;font-size:16px;color:var(--navy);margin-bottom:6px;}
.feat .item span{font-size:14.5px;color:var(--muted);line-height:1.65;}
.cta-band{background:var(--navy);color:#fff;text-align:center;padding:56px 0;}
.cta-band h2{font-size:28px;margin-bottom:10px;font-weight:900;}
.cta-band p{color:#C7D6EC;margin-bottom:24px;font-size:16px;}
.cta-band .btn-primary{background:var(--amber);color:var(--navy);}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.two-col img{border-radius:14px;width:100%;min-height:300px;max-height:440px;object-fit:cover;background:#EDF1F7;}
.checks{list-style:none;}
.checks li{position:relative;padding-left:28px;margin-bottom:12px;font-size:15.5px;color:#33415C;}
.checks li:before{content:"";position:absolute;left:0;top:8px;width:14px;height:8px;border-left:2.5px solid #1E6FFF;border-bottom:2.5px solid #1E6FFF;transform:rotate(-45deg);}
.gal{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:26px;}
.gal img{width:100%;height:220px;object-fit:cover;border-radius:12px;border:1px solid var(--line);}
@media(max-width:820px){.page-hero{padding:104px 0 44px;}.page-hero h1{font-size:28px;}.two-col{grid-template-columns:1fr;gap:24px;}}