*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:#0b2142;background:#fff}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
.container{width:92%;max-width:1240px;margin:0 auto}
.topbar{background:#fff;border-bottom:1px solid #e5edf8;position:sticky;top:0;z-index:50}
.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px}
.flag{width:48px;height:34px;background:#0054b8;border-radius:4px 14px 14px 4px;box-shadow:0 8px 18px rgba(0,84,184,.22)}
.brand-title{font-size:30px;line-height:30px;font-weight:800;color:#003b82;letter-spacing:.5px}
.brand-sub{font-size:12px;letter-spacing:1.8px;color:#0e4f9a;text-transform:uppercase}
.nav{display:flex;gap:24px;font-size:14px;font-weight:700;color:#08254d;align-items:center}
.nav a:hover,.nav a.active{color:#0059c8}
.btn{display:inline-block;padding:13px 22px;background:#0059c8;color:#fff;border-radius:4px;font-weight:700;font-size:14px;border:1px solid #0059c8}
.btn-outline{background:transparent;color:#0059c8;border:1px solid #0059c8}
.mobile-toggle{display:none;background:#0059c8;color:#fff;border:0;border-radius:4px;padding:10px 12px;font-weight:700}
.hero{position:relative;min-height:620px;background:#082d5d url("../images/power-boiler-panorama.jpg") center center/cover no-repeat;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(3,28,62,.96) 0%,rgba(5,49,101,.82) 42%,rgba(4,60,120,.24) 100%)}
.hero-content{position:relative;z-index:2;padding:82px 0 70px;color:#fff;max-width:720px}
.hero h1{margin:0;font-size:66px;line-height:1.02;letter-spacing:1px;text-transform:uppercase}
.hero h2{margin:12px 0 0;font-size:32px;line-height:1.25;text-transform:uppercase}
.hero p{font-size:22px;line-height:1.35;max-width:620px}
.model{margin-top:32px;padding-top:22px;border-top:2px solid rgba(98,178,255,.7);width:280px}
.model strong{display:block;color:#58aaff;font-size:42px;letter-spacing:2px}
.model span{font-size:18px;font-weight:700}
.icons{margin-top:34px;display:flex;flex-wrap:wrap;gap:20px}
.icon-item{width:135px;color:#fff}
.icon-dot{width:42px;height:42px;border-radius:50%;background:#1674e8;margin-bottom:10px}
.icon-item b{display:block;font-size:13px;text-transform:uppercase}
.icon-item span{display:block;font-size:12px;line-height:1.35;color:#d6e8ff}
.page-hero{background:linear-gradient(135deg,#002f68,#0063cf);color:#fff;padding:72px 0}
.page-hero h1{margin:0;font-size:48px}
.page-hero p{font-size:20px;max-width:780px;line-height:1.6;color:#e2f1ff}
.section{padding:72px 0}
.section-light{background:#f5f9ff}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:36px;align-items:center}
.card{background:#fff;border:1px solid #e4edf8;border-radius:18px;overflow:hidden;box-shadow:0 18px 38px rgba(16,64,120,.08)}
.card-body{padding:28px}
.card h3{font-size:26px;margin:0 0 12px;color:#003b82}
.card p,.lead{font-size:17px;line-height:1.72;color:#334c70}
.product-card img{width:100%;height:330px;object-fit:cover;background:#f4f8ff}
.code{display:inline-block;background:#004ea8;color:#fff;padding:7px 12px;border-radius:3px;font-size:22px;font-weight:800;margin:10px 0}
.list{padding-left:20px;color:#334c70;line-height:1.8;font-size:17px}
.blue-band{background:linear-gradient(135deg,#00316d,#005fc8);color:#fff;padding:64px 0}
.blue-band p,.blue-band .lead{color:#e5f2ff}
.company-wrap{display:grid;grid-template-columns:1fr 1.1fr 0.9fr}
.company-info{padding:56px;background:linear-gradient(135deg,#00316d,#0056b8);color:#fff}
.company-info p{color:#e4f1ff;line-height:1.65;font-size:17px}
.gate img{width:100%;height:100%;object-fit:cover}
.contact-box{padding:56px;background:#002f68;color:#fff}
.contact-box p{line-height:1.7;color:#e5f2ff}
.footer{background:#061a35;color:#cfe4ff;padding:28px 0;text-align:center;font-size:14px}
.keyword-list{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px}
.keyword-list span{background:#e9f3ff;color:#004c9f;padding:10px 14px;border-radius:30px;font-weight:700;font-size:14px}
.form input,.form textarea{width:100%;padding:14px;border:1px solid #cddbf0;border-radius:8px;margin-bottom:14px;font-size:16px}
.form textarea{min-height:140px}
.notice{border-left:5px solid #0059c8;background:#eef6ff;padding:22px;border-radius:10px;margin:24px 0}
.auth-card{border:2px solid #0059c8;border-radius:20px;background:#fff;padding:36px;box-shadow:0 20px 50px rgba(0,50,120,.10)}
.auth-title{text-align:center;color:#003b82;text-transform:uppercase;letter-spacing:1px;margin:0 0 10px;font-size:34px}
.auth-sub{text-align:center;color:#334c70;margin:0 0 34px}
.auth-row{display:grid;grid-template-columns:220px 1fr;border-bottom:1px solid #e4edf8;padding:16px 0;gap:20px}
.auth-row b{color:#003b82}
.signature{display:grid;grid-template-columns:1fr 1fr;gap:30px;margin-top:36px}
.sign-box{border-top:1px solid #92a9c8;padding-top:18px;color:#334c70}
@media(max-width:980px){
 .nav{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;flex-direction:column;padding:18px 30px;border-bottom:1px solid #e5edf8;align-items:flex-start}
 .nav.open{display:flex}
 .mobile-toggle{display:block}
 .hero h1{font-size:48px}.hero h2{font-size:25px}
 .grid-3,.grid-2,.company-wrap,.signature{grid-template-columns:1fr}
 .product-card img{height:auto}
 .gate img{height:auto}
 .auth-row{grid-template-columns:1fr}
}
@media(max-width:640px){
 .container{width:90%}.brand-title{font-size:24px}.brand-sub{font-size:10px}.topbar .btn{display:none}
 .hero{min-height:auto}.hero-content{padding:56px 0}.hero h1{font-size:38px}.hero h2{font-size:20px}.hero p{font-size:17px}
 .model strong{font-size:34px}.icons{gap:12px}.icon-item{width:46%}
 .page-hero{padding:48px 0}.page-hero h1{font-size:34px}.section{padding:48px 0}
 .company-info,.contact-box{padding:36px 24px}
 .auth-card{padding:24px}.auth-title{font-size:26px}
}


/* Authorization network page */
.world-map-wrap{background:#f5f9ff;border:1px solid #dce9f8;border-radius:22px;padding:24px;box-shadow:0 18px 40px rgba(16,64,120,.08)}
.world-map{position:relative;width:100%;max-width:1100px;margin:0 auto}
.world-map svg{width:100%;height:auto;display:block}
.map-point{position:absolute;width:18px;height:18px;border-radius:50%;background:#0059c8;border:3px solid #fff;box-shadow:0 0 0 6px rgba(0,89,200,.18);cursor:pointer}
.map-point.china{background:#e53935;box-shadow:0 0 0 7px rgba(229,57,53,.20)}
.map-point .tooltip{display:none;position:absolute;left:24px;top:-18px;min-width:230px;background:#061a35;color:#fff;border-radius:10px;padding:12px 14px;font-size:13px;line-height:1.5;z-index:8;box-shadow:0 14px 30px rgba(0,0,0,.25)}
.map-point:hover .tooltip{display:block}
.point-cn{left:73%;top:49%}
.point-jp{left:82%;top:48%}
.point-kr{left:78.5%;top:45%}
.point-de{left:50.5%;top:39%}
.auth-mini-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:28px}
.auth-mini{background:#fff;border:1px solid #e4edf8;border-radius:16px;padding:20px;box-shadow:0 12px 28px rgba(16,64,120,.06)}
.auth-mini h3{margin:0 0 10px;color:#003b82;font-size:20px}
.auth-mini p{margin:0;color:#334c70;line-height:1.6;font-size:15px}
.formal-badge{display:inline-block;background:#e53935;color:#fff;border-radius:20px;padding:5px 10px;font-size:12px;font-weight:700;margin-bottom:10px}
.sample-badge{display:inline-block;background:#e9f3ff;color:#004c9f;border-radius:20px;padding:5px 10px;font-size:12px;font-weight:700;margin-bottom:10px}
@media(max-width:980px){.auth-mini-grid{grid-template-columns:1fr 1fr}.map-point .tooltip{left:auto;right:24px}}
@media(max-width:640px){.auth-mini-grid{grid-template-columns:1fr}.map-point{width:16px;height:16px}.map-point .tooltip{min-width:190px;font-size:12px}}