:root{
  --primary:#0052CC;
  --primary-light:#66A3FF;
  --primary-bg:#F0F7FF;
  --deep:#003388;
  --dark:#002255;
  --text:#333333;
  --muted:#666666;
  --accent:#FF7828;
  --white:#FFFFFF;
  --line:#D8E8FF;
  --shadow:0 14px 35px rgba(0,42,120,.12);
  --shadow-strong:0 24px 55px rgba(0,42,120,.22);
  --radius:6px;
  --container:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family: "思源黑体", "Arial";color:var(--text);background:#fff;line-height:1.65;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{width:min(var(--container),calc(100% - 40px));margin:0 auto;}
.topbar{height:40px;background:var(--dark);color:#fff;font-size:14px;display:flex;align-items:center;text-align:center;}
.topbar .container{letter-spacing:.5px;opacity:.96;}
.navbar{height:80px;background:#2A3038;color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 8px 24px rgba(0,34,85,.16);}
.nav-inner{height:80px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:12px;min-width:280px;}
.logo-mark{width:44px;height:44px;display:grid;place-items:center;font-weight:900;font-size:18px;letter-spacing:-1px;}
.brand-name{font-size:20px;font-weight:700;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:24px;font-size:16px;}
.nav-item{position:relative;padding:28px 0;color:#fff;transition:.2s;color:rgba(255,255,255,.95);}
.nav-item:hover{color:var(--primary-light);}
.dropdown{position:absolute;top:78px;left:-26px;width:220px;background:#fff;color:#2A3038;box-shadow:var(--shadow);border:1px solid var(--line);border-radius:0 0 var(--radius) var(--radius);padding:10px 0;opacity:0;transform:translateY(8px);pointer-events:none;transition:.22s;}
.nav-item.has-dropdown:hover .dropdown{opacity:1;transform:translateY(0);pointer-events:auto;}
.dropdown a{display:block;padding:9px 18px;font-size:14px;color:#2A3038;}
.dropdown a:hover{background:var(--primary-bg);}
.nav-actions{display:flex;align-items:center;gap:16px;white-space:nowrap;}
.hotline{font-size:18px;font-weight:700;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:4px;background:#2A3038;color:#fff;border:1px solid #2A3038;font-weight:700;cursor:pointer;transition:.22s;}
.btn:hover{background:var(--primary-light);border-color:var(--primary-light);transform:translateY(-1px);}
.btn-outline-white{background:#fff;color:#2A3038;border-color:#fff;}
.btn-outline-white:hover{background:transparent;color:#fff;border-color:#fff;}
.btn-ghost{background:transparent;border-color:#fff;color:#fff;}
.hamburger{display:none;width:42px;height:42px;border:1px solid rgba(255,255,255,.75);border-radius:4px;background:transparent;color:#fff;font-size:24px;}
.hero{position:relative;overflow:hidden;padding:0;}
.slides{height:600px;position:relative;margin-top:0;}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .65s ease;display:grid;place-items:center;text-align:center;padding:0 20px;}
.slide.active{opacity:1;z-index:1;}
.slide.reference-banner{padding:0;background:#f4f9ff;}
.slide.reference-banner::before{content:"";position:absolute;inset:0;background-image:url(banner.jpg);background-size:auto;background-position:center top;background-repeat:repeat-x;z-index:0;}
.slide.reference-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,34,85,.03),rgba(0,82,204,.01));pointer-events:none;z-index:1;}
.slide.reference-banner .hero-card{display:none;}
.slide:not(.reference-banner)::before{content:"";position:absolute;inset:0;background:
  linear-gradient(105deg,rgba(0,34,85,.92) 0%,rgba(0,82,204,.72) 45%,rgba(0,82,204,.3) 100%),
  radial-gradient(circle at 75% 35%,rgba(102,163,255,.48),transparent 28%),
  repeating-linear-gradient(135deg,rgba(255,255,255,.09) 0 1px,transparent 1px 18px);}
.slide:nth-child(2)::before{ background: linear-gradient(135deg, #f2f8fe 0%, #d1eaf8 100%);}
.slide:nth-child(3)::before{ background: linear-gradient(135deg, #f2f8fe 0%, #d1eaf8 100%);}
.hero-card{position:relative;z-index:2;max-width:960px;}
.hero-reference-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1;}
.hero-kicker{display:inline-block;border:1px solid rgba(255,255,255,.5);border-radius:999px;padding:6px 16px;margin-bottom:22px;background:rgba(255,255,255,.08);font-size:14px;letter-spacing:2px;}
.hero h1{font-size:48px;line-height:1.22;margin:0 0 18px;font-weight:800;text-shadow:0 4px 22px rgba(0,0,0,.25);}
.hero p{font-size:19px;margin:0 auto 34px;max-width:760px;color:rgba(255,255,255,.92);}
.hero-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:46px;height:46px;border:1px solid rgba(255,255,255,.6);border-radius:50%;background:rgba(0,34,85,.2);color:#fff;font-size:28px;cursor:pointer;transition:.2s;}
.hero-arrow:hover{background:rgba(255,255,255,.22);}
.hero-arrow.prev{left:42px;}.hero-arrow.next{right:42px;}
.dots{position:absolute;left:0;right:0;bottom:28px;z-index:3;display:flex;justify-content:center;gap:10px;}
.dot{width:10px;height:10px;border-radius:50%;border:1px solid #fff;background:transparent;cursor:pointer;padding:0;}
.dot.active{width:28px;border-radius:999px;background:#fff;}
section{padding:72px 0;}
.section-head{text-align:center;margin-bottom:38px;}
.section-head h2{font-size:36px;line-height:1.25;margin:0;color:#12345C;font-weight:800;}
.section-head .line{width:68px;height:4px;background:#2A3038;border-radius:8px;margin:16px auto 12px;}
.section-head p{margin:0;color:var(--muted);font-size:16px;}
.advantages{background:linear-gradient(180deg,#e9f2fc 0%,#f1f7ff 100%);position:relative;overflow:hidden;padding:42px 0 48px;}
    .advantages::before{display:none;}
    .advantages .container{position:relative;z-index:1;}
    .advantages .section-head{margin-bottom:22px;}
    .advantages .section-head h2{font-size:32px;letter-spacing:1px;}
    .advantages .section-head p{max-width:650px;margin:0 auto;}
    .adv-stage{position:relative;min-height:292px;display:grid;grid-template-columns:minmax(0,1fr) 245px minmax(0,1fr);grid-template-rows:1fr 1fr;align-items:center;gap:14px 28px;background:url("core-advantages-bg.png") center/100% 100% no-repeat;}
    .adv-stage::before,.adv-stage::after{display:none;}
    .adv-grid{display:contents;}
    .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 6px 20px rgba(0,82,204,.06);transition:.22s;}
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
    .adv-card1{text-align:left;width:310px;justify-self:center;min-height:108px;position:relative;overflow:hidden;border:0;border-radius:14px;background:transparent;box-shadow:none;transition:.28s;z-index:2;}
    
    .adv-card.technology,.adv-card.service{padding-left:82px;}
    .adv-card::before,.adv-card::after{display:none;}
    .adv-card:hover{transform:translateY(-2px);}
    .adv-card.factory{grid-column:1;grid-row:1;padding-top:85px;padding-left:230px;}
    .adv-card.quality{grid-column:1;grid-row:2;padding-left:230px;}
    .adv-card.technology{grid-column:3;grid-row:1;padding-top:85px;padding-left:100px;}
    .adv-card.service{grid-column:3;grid-row:2;padding-left:100px;}
    .adv-card .icon{display:none;}
    .adv-card h3{font-size:18px;margin:0 0 3px;color:#0c4d9c;position:relative;z-index:1;white-space:nowrap;}
    .adv-card p{font-size:12px;line-height:1.5;color:var(--muted);margin:0;position:relative;z-index:1;}
    .adv-code{display:none;}
    .adv-core{display:none;}
    .adv-core::before,.adv-core::after{content:"";position:absolute;border:1px solid rgba(35,153,245,.45);border-radius:50%;}
    .adv-core::before{inset:-14px;border-top-color:transparent;border-bottom-color:transparent;transform:rotate(24deg);}
    .adv-core::after{inset:-26px;border-left-color:transparent;border-right-color:transparent;transform:rotate(-25deg);}
    .adv-core-inner{width:86px;height:86px;border-radius:50%;display:grid;place-items:center;color:#277fc2;font-size:35px;background:radial-gradient(circle,#fff,#c9edff);border:1px solid rgba(58,164,239,.55);box-shadow:0 0 22px rgba(71,180,255,.42);}
    .adv-core-label{position:absolute;bottom:25px;font-size:8px;letter-spacing:1.4px;color:#4b91c1;font-family:Consolas,monospace;}
    .adv-data{position:absolute;color:#3b88c8;font:11px/1.35 "Microsoft YaHei",Arial,sans-serif;letter-spacing:.2px;z-index:2;}
    .adv-data strong{display:block;color:#176dba;font:700 19px/1.1 Arial,sans-serif;margin:3px 0;}
    .adv-data::after{content:"";display:block;width:48px;height:2px;margin-top:5px;background:linear-gradient(90deg,#2b9ef4,transparent);}
    .adv-data.d1{left:16px;top:77px;}.adv-data.d2{left:16px;bottom:77px;}.adv-data.d3{right:16px;top:77px;text-align:right;}.adv-data.d4{right:16px;bottom:77px;text-align:right;}.adv-data.d3::after,.adv-data.d4::after{margin-left:auto;transform:rotate(180deg);}
.cases,.news{background:var(--primary-bg);}
.tabs{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:26px;}
.tab{ line-height:40px;padding:0 16px;border:1px solid var(--line);background:#fff;border-radius:999px;color:#2A3038;cursor:pointer;font-weight:700;transition:.2s;}
.tab.active,.tab:hover{background:#2A3038;border-color:#2A3038;color:#fff;}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.product-card{overflow:hidden;display:flex;flex-direction:column;min-height:332px;}
.product-visual{position:relative;background:linear-gradient(135deg,#E3F0FF,#FFFFFF);overflow:hidden;}

.product-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.product-body h3{font-size:18px;line-height:1.35;margin:0;color:#12345C;}
.product-body p{font-size:14px;color:var(--muted);margin:0;flex:1;}
.tag{display:inline-block;align-self:flex-start;background:rgba(255,120,40,.1);color:var(--accent);border:1px solid rgba(255,120,40,.2);font-size:12px;border-radius:999px;padding:2px 9px;font-weight:700;}
.scenes{background:#fff;}
.scene-grid{display: flex;flex-wrap: wrap; justify-content: space-between;}
.scene-card{ width:32.5%; margin-bottom:15px; border-radius:var(--radius);overflow:hidden;position:relative;border:1px solid var(--line);background:linear-gradient(145deg,#EAF4FF,#fff);box-shadow:0 8px 22px rgba(0,82,204,.08);}
.scene-card span{position:absolute;left:0;right:0;bottom:0;height:46px;background:rgba(0,82,204,.86);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;text-align:center;padding:0 8px;}
.case-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.case-card{overflow:hidden;}
.case-img{background:linear-gradient(135deg,#0C5DD4,#8BBEFF);position:relative;}
.case-body{padding:18px;position:relative;}
.case-label{position:absolute;top:-15px;right:18px;background:#2A3038;color:#fff;font-size:12px;border-radius:99px;padding:4px 10px;}
.case-body h3{font-size:18px;margin:0 0 8px;color:#12345C;}
.case-body p{font-size:14px;margin:0;color:var(--muted);}
.strength{background:#fff;}
.strength-wrap{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;}
.strength .strength-wrap::before{ display:none;  }
.strength .strength-wrap::after{ display:none;  }
.factory-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.factory-photo{min-height:150px;border-radius:var(--radius);background:linear-gradient(135deg,#E9F3FF,#B8D9FF);border:1px solid var(--line);position:relative;overflow:hidden;}
.factory-photo:nth-child(1){grid-row:span 2;min-height:312px;}
.strength-text h2{font-size:34px;line-height:1.35;margin:0 0 18px;color:#12345C;}
.strength-text p{color:var(--muted);margin:0 0 22px;}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0;}
.stat{background:var(--primary-bg);border:1px solid var(--line);border-radius:var(--radius);padding:15px;text-align:center;}
.stat strong{display:block;color:#2A3038;font-size:26px;line-height:1.2;}
.stat span{font-size:13px;color:var(--muted);}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{overflow:hidden;}
.news-thumb{background:linear-gradient(135deg,#FFFFFF,#CFE5FF);border-bottom:1px solid var(--line);position:relative;}
.news-thumb::after{content:"选型指南";position:absolute;left:18px;bottom:18px;background:var(--accent);color:#fff;border-radius:4px;padding:3px 9px;font-size:12px;font-weight:700;}
.news-body{padding:20px;}
.news-body h3{font-size:18px;line-height:1.45;margin:0 0 10px;color:#12345C;}
.news-body p{font-size:14px;color:var(--muted);margin:0 0 12px; overflow: hidden;  text-overflow: ellipsis;  display: -webkit-box;  -webkit-line-clamp: 2;  -webkit-box-orient: vertical;}
.read-more{color:#2A3038;font-weight:700;font-size:14px;}
.cta{background:linear-gradient(135deg,var(--deep),var(--dark));color:#fff;padding:70px 0;}
.cta-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start;}
.cta h2{font-size:34px;line-height:1.3;margin:0 0 12px;}
.cta p{margin:0 0 24px;color:rgba(255,255,255,.86);}
.form{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.form input,.form select,.form textarea{width:100%;height:46px;border:1px solid rgba(255,255,255,.35);border-radius:4px;background:rgba(255,255,255,.96);padding:0 14px;font-family:inherit;color:var(--text);outline:none;}
.form input::-webkit-input-placeholder { font-size: 16px; }
.form textarea::-webkit-input-placeholder { font-size: 16px; }
.form textarea{grid-column:1/-1;height:92px;padding-top:12px;resize:none; font-size: 16px;}
.form .submit{grid-column:1/-1;border:0;background:var(--primary-light);color:#fff;height:48px;border-radius:4px;font-weight:800;font-size:16px;cursor:pointer;}
.contact-card{border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);border-radius:var(--radius);padding:26px;}
.contact-card h3{font-size:24px;margin:0 0 18px;}
.contact-list{display:grid;gap:12px;color:rgba(255,255,255,.9);}
.contact-list strong{color:#fff;}
.qr{width:110px;height:110px;background:#fff;border-radius:6px;margin-top:20px;padding:8px;}
.footer{background:var(--dark);color:#fff;padding:46px 0 24px;}
.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:34px;margin-bottom:28px;}
.footer h3,.footer h4{margin:0 0 12px;}.footer h3{font-size:22px;}.footer h4{font-size:16px;color:#fff;}
.footer p,.footer a{display:block;margin:0 0 8px;color:rgba(255,255,255,.72);font-size:14px;}
.copyright{border-top:1px solid rgba(255,255,255,.16);padding-top:18px;color:rgba(255,255,255,.65);font-size:13px;text-align:center;}
.float-consult{position:fixed;right:24px;bottom:28px;z-index:60;background:#2A3038;color:#fff;border-radius:999px;padding:12px 18px;box-shadow:var(--shadow-strong);font-weight:800;}
@media (max-width:1100px){
  .nav-menu,.nav-actions{display:none;}.hamburger{display:block;}.brand{min-width:0}.brand-name{font-size:18px;}
  .adv-grid,.product-grid,.case-row{grid-template-columns:repeat(2,1fr);} .scene-grid{grid-template-columns:repeat(3,1fr);} .footer-grid{grid-template-columns:1fr 1fr;}
  .strength-wrap,.cta-wrap{grid-template-columns:1fr;}
  .adv-card.factory{padding-left:190px;}
  .adv-card.quality{padding-left:190px;}
  .adv-card.technology{padding-left:60px;}
  .adv-card.service{padding-left:60px;}
  
  
}

@media (max-width:992px){
  .adv-data{ display:none;}
  .adv-card.factory{padding-left:100px;}
  .adv-card.quality{padding-left:100px;}
  .adv-card.technology{padding-left:0px;}
  .adv-card.service{padding-left:0px;}
}

@media (max-width:768px){
  .adv-card.factory{padding-left:0px; padding-top:0;}
  .adv-card.quality{padding-left:0px; padding-top:0;}
  .adv-card.technology{ padding-top:0;}
  .adv-card.service{ padding-top:0;}
.adv-stage{ background:none; display: flex;flex-wrap: wrap; gap:0;}
.adv-card{ width:50%;} 
  
  
  
}

@media (max-width:640px){
  .topbar{height:auto;padding:8px 0;}.navbar,.nav-inner{height:66px}.logo-mark{width:38px;height:38px}.brand-name{font-size:15px;white-space:normal;line-height:1.25;}
  .hero,.slides{height:560px}.hero h1{font-size:32px}.hero p{font-size:16px}.hero-arrow{display:none}.section-head h2{font-size:28px}section{padding:52px 0;}
  .adv-grid,.product-grid,.case-row,.news-grid,.stats,.form,.footer-grid{grid-template-columns:1fr;}.scene-grid{grid-template-columns:repeat(2,1fr)}.scene-card{height:150px}.form textarea,.form .submit{grid-column:auto}.float-consult{right:14px;bottom:16px;padding:10px 14px;}
}

.video_ewm{ clear:both; overflow:hidden; text-align:center;}
.video_ewm p{ font-size:24px; margin-bottom:30px; line-height:34px;}
.video_ewm ul{ clear:both; overflow:hidden; justify-content: center;}
.video_ewm ul li{ width:45%;}

.nry_content_video{ text-align:center;}
.nry_content_video video{ max-width:600px; }