:root{
  --theme:#0B3D91;
  --theme-dark:#072b68;
  --theme-light:#eaf2ff;
  --accent:#ffcf20;
  --red:#e53935;
  --green:#168a4b;
  --ink:#162033;
  --muted:#677286;
  --line:#e3e8f0;
  --paper:#fff;
  --surface:#f5f7fb;
  --shadow:0 16px 40px rgba(14,35,72,.11);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--ink);
  background:var(--surface);
  font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",Arial,sans-serif;
  line-height:1.7;
}
body,button,input,textarea,select{font:inherit}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{color:inherit}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.topbar{
  color:#dfe9ff;
  background:#061d48;
  font-size:13px;
}
.topbar .container{
  min-height:38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.top-contact{display:flex;align-items:center;gap:22px}
.top-contact a:hover{color:#fff}

.header{
  position:relative;
  z-index:50;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 5px 22px rgba(15,36,70,.05);
}
.header-inner{
  min-height:78px;
  display:flex;
  align-items:center;
  gap:28px;
}
.logo{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:11px;
  color:var(--theme);
  font-size:20px;
  font-weight:900;
  letter-spacing:.02em;
}
.logo img{
  width:42px;
  height:42px;
  object-fit:contain;
}
.main-nav{align-self:stretch;margin-left:auto}
.nav-list{
  height:100%;
  display:flex;
  align-items:stretch;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}
.nav-list>li{
  position:relative;
  display:flex;
  align-items:center;
}
.nav-link{
  height:100%;
  display:flex;
  align-items:center;
  padding:0 13px;
  color:#263248;
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
}
.nav-link:hover,
.nav-list>li:focus-within>.nav-link{
  color:var(--theme);
  background:#f4f7fc;
}
.has-arrow::after{
  width:6px;
  height:6px;
  margin:-4px 0 0 8px;
  border-right:1.5px solid currentColor;
  border-bottom:1.5px solid currentColor;
  content:"";
  transform:rotate(45deg);
}
.dropdown-panel,
.mega-menu{
  position:absolute;
  top:100%;
  z-index:70;
  visibility:hidden;
  opacity:0;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:0 22px 55px rgba(12,31,68,.17);
  transform:translateY(10px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
}
.dropdown-panel::before,
.mega-menu::before{
  position:absolute;
  right:0;
  bottom:100%;
  left:0;
  height:12px;
  content:"";
}
.nav-list>li:hover .dropdown-panel,
.nav-list>li:hover .mega-menu,
.nav-list>li:focus-within .dropdown-panel,
.nav-list>li:focus-within .mega-menu{
  visibility:visible;
  opacity:1;
  transform:translateY(0);
}
.dropdown-panel{
  left:0;
  width:310px;
  padding:10px;
  border-radius:0 0 14px 14px;
}
.drop-item{
  display:block;
  padding:10px 12px;
  overflow:hidden;
  color:#354157;
  border-radius:8px;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.drop-item:hover{color:var(--theme);background:var(--theme-light)}
.mega-menu{
  left:50%;
  width:min(690px,90vw);
  padding:22px;
  border-radius:0 0 18px 18px;
  transform:translate(-50%,10px);
}
.nav-list>li:hover .mega-menu,
.nav-list>li:focus-within .mega-menu{transform:translate(-50%,0)}
.nav-list>li:nth-last-child(-n+3) .mega-menu{
  right:0;
  left:auto;
  transform:translateY(10px);
}
.nav-list>li:nth-last-child(-n+3):hover .mega-menu,
.nav-list>li:nth-last-child(-n+3):focus-within .mega-menu{transform:translateY(0)}
.mega-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.mega-title{
  margin:0 0 10px;
  color:var(--theme);
  font-size:14px;
  font-weight:900;
}
.mega-card{
  display:grid;
  grid-template-columns:auto 1fr;
  align-items:center;
  gap:3px 9px;
  padding:9px 10px;
  color:#253149;
  border-radius:9px;
}
.mega-card:hover{color:var(--theme);background:var(--theme-light)}
.mega-card img{
  grid-row:1/3;
  width:30px;
  height:30px;
  object-fit:contain;
  border-radius:7px;
}
.mega-card strong{
  overflow:hidden;
  font-size:14px;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.mega-card small{
  grid-column:1/-1;
  overflow:hidden;
  color:var(--muted);
  font-size:12px;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.mega-card img~small{grid-column:2}
.meta{margin:0 0 16px;color:var(--muted);font-size:14px}
.mega-footer{
  display:inline-flex;
  align-items:center;
  color:var(--theme);
  font-size:14px;
  font-weight:800;
}
.mega-footer::after{margin-left:7px;content:"→"}
.header-btns{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:8px;
}
.member-btn,
.account-btn{
  min-height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 15px;
  border-radius:8px;
  font-size:14px;
  font-weight:800;
}
.member-btn{color:var(--theme);background:var(--theme-light)}
.account-btn{color:#fff;background:var(--theme)}
.member-btn:hover{background:#dae8ff}
.account-btn:hover{background:var(--theme-dark)}
.hamburger{
  width:42px;
  height:42px;
  display:none;
  padding:9px;
  cursor:pointer;
  background:#fff;
  border:1px solid var(--line);
  border-radius:9px;
}
.hamburger span{
  width:100%;
  height:2px;
  display:block;
  margin:5px 0;
  background:var(--ink);
  transition:.2s ease;
}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer-overlay{
  position:fixed;
  inset:0;
  z-index:98;
  visibility:hidden;
  opacity:0;
  background:rgba(3,13,31,.58);
  transition:.22s ease;
}
.drawer-overlay.open{visibility:visible;opacity:1}
.mobile-drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  z-index:99;
  width:min(390px,88vw);
  overflow-y:auto;
  background:#fff;
  box-shadow:-20px 0 50px rgba(0,0,0,.2);
  transform:translateX(102%);
  transition:transform .24s ease;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{
  min-height:72px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:14px 18px;
  color:#fff;
  background:var(--theme);
}
.drawer-head>a{
  padding:7px 11px;
  background:rgba(255,255,255,.14);
  border-radius:7px;
}
.drawer-close{
  width:38px;
  height:38px;
  margin-left:auto;
  padding:0;
  color:#fff;
  cursor:pointer;
  background:transparent;
  border:0;
  font-size:30px;
  line-height:1;
}
.drawer-menu{padding:14px 18px 30px}
.drawer-link,
.drawer-toggle{
  width:100%;
  min-height:48px;
  display:flex;
  align-items:center;
  padding:0 10px;
  cursor:pointer;
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
  font-weight:800;
  text-align:left;
}
.drawer-toggle::after{
  margin-left:auto;
  font-size:20px;
  content:"+";
}
.drawer-toggle.active{color:var(--theme)}
.drawer-toggle.active::after{content:"−"}
.drawer-submenu{
  max-height:0;
  overflow:hidden;
  background:#f6f8fc;
  transition:max-height .3s ease;
}
.drawer-submenu.open{max-height:620px}
.drawer-submenu a{
  display:block;
  padding:9px 16px;
  color:#4e5b70;
  font-size:14px;
}
.drawer-submenu a:hover{color:var(--theme);background:var(--theme-light)}

.ea-content-stack{min-width:0}
.ea-content-stack .product-banner{
  position:relative;
  overflow:hidden;
  padding:34px 0 118px;
  color:#fff;
  background:
    radial-gradient(circle at 12% 25%,rgba(255,207,32,.2),transparent 20%),
    radial-gradient(circle at 88% 30%,rgba(229,57,53,.18),transparent 18%),
    linear-gradient(135deg,#071c43 0%,#0B3D91 58%,#1264b5 100%);
}
.ea-content-stack .product-banner::after{
  position:absolute;
  right:-80px;
  bottom:-145px;
  width:460px;
  height:280px;
  background:
    linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px),
    linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:34px 34px;
  border-radius:50%;
  content:"";
  transform:rotate(-9deg);
}
.ea-content-stack .breadcrumb{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  margin-bottom:24px;
  color:#dbe8ff;
  font-size:14px;
}
.ea-content-stack .breadcrumb a:hover{color:#fff}
.ea-content-stack .breadcrumb span::before{
  margin-right:8px;
  color:#93b5e8;
  content:"/";
}
.ea-content-stack .banner-label{
  position:relative;
  z-index:1;
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:13px;
  padding:6px 11px;
  color:#102441;
  background:var(--accent);
  border-radius:999px;
  font-size:13px;
  font-weight:900;
}
.ea-content-stack .banner-label::before{
  width:8px;
  height:8px;
  background:var(--red);
  border-radius:2px;
  content:"";
}
.ea-content-stack .product-banner h1{
  position:relative;
  z-index:1;
  max-width:900px;
  margin:0;
  font-size:clamp(34px,5vw,58px);
  line-height:1.14;
  letter-spacing:-.035em;
}
.ea-content-stack .product-summary{
  position:relative;
  z-index:1;
  max-width:800px;
  margin:20px 0 0;
  color:#e4edfc;
  font-size:17px;
}
.ea-content-stack .product-shell{
  position:relative;
  z-index:3;
  display:grid;
  grid-template-columns:minmax(0,1fr) 310px;
  gap:26px;
  margin-top:-76px;
  padding-bottom:72px;
}
.ea-content-stack .product-main,
.ea-content-stack .product-side-card{
  background:#fff;
  border:1px solid rgba(220,228,240,.9);
  box-shadow:var(--shadow);
}
.ea-content-stack .product-main{
  min-width:0;
  overflow:hidden;
  border-radius:22px;
}
.ea-content-stack .product-intro{
  display:grid;
  grid-template-columns:minmax(250px,42%) minmax(0,1fr);
  gap:30px;
  padding:30px;
  border-bottom:1px solid var(--line);
}
.ea-content-stack .product-image{
  position:relative;
  min-height:280px;
  overflow:hidden;
  background:#eef3fb;
  border:1px solid var(--line);
  border-radius:16px;
}
.ea-content-stack .product-image img{
  width:100%;
  height:100%;
  min-height:280px;
  object-fit:cover;
}
.ea-content-stack .product-image::after{
  position:absolute;
  right:13px;
  bottom:13px;
  padding:5px 10px;
  color:#fff;
  background:rgba(7,29,72,.82);
  border-radius:6px;
  content:"产品展示";
  font-size:12px;
}
.ea-content-stack .intro-copy{min-width:0}
.ea-content-stack .intro-copy h2{
  margin:0 0 12px;
  color:var(--theme);
  font-size:25px;
  line-height:1.3;
}
.ea-content-stack .intro-copy>p{margin:0 0 21px;color:#536077}
.ea-content-stack .product-facts{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
}
.ea-content-stack .fact{
  min-width:0;
  padding:12px 13px;
  background:#f6f8fc;
  border:1px solid var(--line);
  border-radius:10px;
}
.ea-content-stack .fact span{
  display:block;
  color:var(--muted);
  font-size:12px;
}
.ea-content-stack .fact strong{
  display:block;
  overflow:hidden;
  margin-top:2px;
  color:#26344c;
  font-size:14px;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.ea-content-stack .intro-actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:20px;
}
.ea-content-stack .primary-action,
.ea-content-stack .secondary-action{
  min-height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 19px;
  border-radius:9px;
  font-weight:900;
}
.ea-content-stack .primary-action{color:#fff;background:var(--theme)}
.ea-content-stack .primary-action:hover{background:var(--theme-dark)}
.ea-content-stack .secondary-action{
  color:var(--theme);
  background:var(--theme-light);
  border:1px solid #ccdfff;
}
.ea-content-stack .section-nav{
  position:sticky;
  top:0;
  z-index:6;
  display:flex;
  gap:4px;
  overflow-x:auto;
  padding:10px 22px;
  background:rgba(255,255,255,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.ea-content-stack .section-nav a{
  flex:0 0 auto;
  padding:7px 13px;
  color:#4f5c71;
  border-radius:7px;
  font-size:14px;
  font-weight:800;
}
.ea-content-stack .section-nav a:hover{color:var(--theme);background:var(--theme-light)}
.ea-content-stack .content-section{padding:30px}
.ea-content-stack .section-heading{
  display:flex;
  align-items:center;
  gap:11px;
  margin:0 0 21px;
  font-size:25px;
}
.ea-content-stack .section-heading::before{
  width:8px;
  height:26px;
  background:var(--accent);
  border-radius:3px;
  box-shadow:5px 5px 0 var(--red);
  content:"";
}
.ea-content-stack .product-body{
  min-width:0;
  max-width:100%;
  overflow-x:auto;
  color:#364258;
  line-height:1.9;
}
.ea-content-stack .product-body img,
.ea-content-stack .product-body video,
.ea-content-stack .product-body iframe,
.ea-content-stack .product-body table{
  max-width:100%;
}
.ea-content-stack .product-body img{height:auto;border-radius:12px}
.ea-content-stack .product-body table{
  width:100%;
  border-collapse:collapse;
}
.ea-content-stack .product-body th,
.ea-content-stack .product-body td{
  padding:10px;
  border:1px solid var(--line);
}
.ea-content-stack .product-body h2,
.ea-content-stack .product-body h3{color:#1d2c45;line-height:1.4}
.ea-content-stack .product-notice{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:13px;
  margin:0 30px 30px;
  padding:18px;
  color:#5d4a19;
  background:#fff9df;
  border:1px solid #f2df8d;
  border-radius:12px;
}
.ea-content-stack .notice-icon{
  width:30px;
  height:30px;
  display:grid;
  place-items:center;
  color:#fff;
  background:#d59b00;
  border-radius:50%;
  font-weight:900;
}
.ea-content-stack .product-notice strong{display:block;color:#604500}
.ea-content-stack .product-notice p{margin:3px 0 0;font-size:14px}
.ea-content-stack .product-aside{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.ea-content-stack .product-side-card{
  overflow:hidden;
  padding:22px;
  border-radius:17px;
}
.ea-content-stack .product-side-card h2{
  margin:0 0 15px;
  color:#1d2d48;
  font-size:19px;
}
.ea-content-stack .side-list{margin:0;padding:0;list-style:none}
.ea-content-stack .side-list li{
  display:flex;
  justify-content:space-between;
  gap:14px;
  padding:11px 0;
  border-bottom:1px dashed var(--line);
}
.ea-content-stack .side-list li:last-child{border-bottom:0}
.ea-content-stack .side-list span{color:var(--muted);font-size:13px}
.ea-content-stack .side-list strong{
  min-width:0;
  color:#293750;
  font-size:13px;
  text-align:right;
  word-break:break-word;
}
.ea-content-stack .side-cta{
  color:#fff;
  background:linear-gradient(145deg,var(--theme),#1264b5);
  border:0;
}
.ea-content-stack .side-cta h2{color:#fff}
.ea-content-stack .side-cta p{color:#dbe8ff;font-size:14px}
.ea-content-stack .side-cta a{
  min-height:42px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:14px;
  color:#172238;
  background:var(--accent);
  border-radius:8px;
  font-weight:900;
}
.ea-content-stack .related-section{
  padding:64px 0 78px;
  background:#fff;
  border-top:1px solid var(--line);
}
.ea-content-stack .related-head{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:24px;
}
.ea-content-stack .related-head h2{
  margin:0;
  color:#172640;
  font-size:30px;
}
.ea-content-stack .related-head p{margin:6px 0 0;color:var(--muted)}
.ea-content-stack .related-head>a{
  color:var(--theme);
  font-size:14px;
  font-weight:900;
}
.ea-content-stack .related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.ea-content-stack .related-card{
  min-width:0;
  overflow:hidden;
  background:#fff;
  border:1px solid var(--line);
  border-radius:15px;
  box-shadow:0 10px 25px rgba(15,40,80,.06);
  transition:.2s ease;
}
.ea-content-stack .related-card:hover{
  border-color:#b8cdf0;
  box-shadow:0 15px 35px rgba(11,61,145,.13);
  transform:translateY(-3px);
}
.ea-content-stack .related-card img{
  width:100%;
  height:170px;
  object-fit:cover;
  background:#eef3fa;
}
.ea-content-stack .related-body{padding:17px}
.ea-content-stack .related-body h3{
  overflow:hidden;
  margin:0 0 8px;
  color:#1d2b43;
  font-size:18px;
  line-height:1.45;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.ea-content-stack .related-body p{
  min-height:3.4em;
  display:-webkit-box;
  overflow:hidden;
  margin:0 0 13px;
  color:var(--muted);
  font-size:14px;
  -webkit-box-orient:vertical;
  -webkit-line-clamp:2;
}
.ea-content-stack .related-meta{
  display:flex;
  justify-content:space-between;
  gap:10px;
  padding-top:12px;
  color:#7b879a;
  border-top:1px solid var(--line);
  font-size:12px;
}
.ea-content-stack .related-link{
  display:inline-flex;
  margin-top:13px;
  color:var(--theme);
  font-size:14px;
  font-weight:900;
}
.ea-content-stack .related-link::after{margin-left:6px;content:"→"}

.footer{
  color:#c7d4e9;
  background:#071a3d;
}
.footer .container{padding-top:54px}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:42px;
  padding-bottom:40px;
}
.footer h3{margin:0 0 16px;color:#fff;font-size:17px}
.footer p{margin:0 0 12px;color:#aebed7;font-size:14px}
.footer-grid>div>a{
  display:block;
  width:max-content;
  max-width:100%;
  margin:9px 0;
  color:#c7d4e9;
  font-size:14px;
}
.footer-grid>div>a:hover{color:#fff}
.footer-bottom{
  padding:18px 0 24px;
  color:#91a5c4;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  text-align:center;
}

@media (max-width:1080px){
  .main-nav{display:none}
  .hamburger{display:block}
  .header-inner{min-height:70px}
  .header-btns{margin-left:auto}
  .ea-content-stack .product-shell{grid-template-columns:minmax(0,1fr) 280px}
}
@media (max-width:860px){
  .ea-content-stack .product-shell{grid-template-columns:1fr}
  .ea-content-stack .product-aside{
    display:grid;
    grid-template-columns:1fr 1fr;
  }
  .ea-content-stack .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:680px){
  .container{width:min(100% - 28px,1180px)}
  .topbar .container{
    min-height:44px;
    align-items:flex-start;
    flex-direction:column;
    justify-content:center;
    gap:1px;
    padding:6px 0;
  }
  .top-contact{flex-wrap:wrap;gap:2px 14px}
  .logo span{max-width:132px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .member-btn{display:none}
  .account-btn{min-height:36px;padding:0 12px}
  .ea-content-stack .product-banner{padding:27px 0 95px}
  .ea-content-stack .product-banner h1{font-size:34px}
  .ea-content-stack .product-summary{font-size:15px}
  .ea-content-stack .product-shell{margin-top:-57px;padding-bottom:48px}
  .ea-content-stack .product-intro{grid-template-columns:1fr;padding:18px}
  .ea-content-stack .product-image,
  .ea-content-stack .product-image img{min-height:220px}
  .ea-content-stack .product-facts{grid-template-columns:1fr}
  .ea-content-stack .section-nav{padding:9px 12px}
  .ea-content-stack .content-section{padding:23px 18px}
  .ea-content-stack .product-notice{margin:0 18px 22px}
  .ea-content-stack .product-aside{grid-template-columns:1fr}
  .ea-content-stack .related-section{padding:48px 0}
  .ea-content-stack .related-head{align-items:flex-start;flex-direction:column}
  .ea-content-stack .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:420px){
  .account-btn{display:none}
  .logo img{width:38px;height:38px}
}